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提交 97e18dc0 编写于 作者: L Linus Torvalds
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Merge tag 'mmc-updates-for-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc 

Pull MMC updates from Chris Ball:
 "MMC highlights for 3.15:

  Core:
   - CONFIG_MMC_UNSAFE_RESUME=y is now default behavior
   - DT bindings for SDHCI UHS, eMMC HS200, high-speed DDR, at 1.8/1.2V
   - Add GPIO descriptor based slot-gpio card detect API

  Drivers:
   - dw_mmc: Refactor SOCFPGA support as a variant inside dw_mmc-pltfm.c
   - mmci: Support HW busy detection on ux500
   - omap: Support MMC_ERASE
   - omap_hsmmc: Support MMC_PM_KEEP_POWER, MMC_PM_WAKE_SDIO_IRQ, (a)cmd23
   - rtsx: Support pre-req/post-req async
   - sdhci: Add support for Realtek RTS5250 controllers
   - sdhci-acpi: Add support for 80860F16, fix 80860F14/SDIO card detect
   - sdhci-msm: Add new driver for Qualcomm SDHCI chipset support
   - sdhci-pxav3: Add support for Marvell Armada 380 and 385 SoCs"

* tag 'mmc-updates-for-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (102 commits)
  mmc: sdhci-acpi: Intel SDIO has broken card detect
  mmc: sdhci-pxav3: add support for the Armada 38x SDHCI controller
  mmc: sdhci-msm: Add platform_execute_tuning implementation
  mmc: sdhci-msm: Initial support for Qualcomm chipsets
  mmc: sdhci-msm: Qualcomm SDHCI binding documentation
  sdhci: only reprogram retuning timer when flag is set
  mmc: rename ARCH_BCM to ARCH_BCM_MOBILE
  mmc: sdhci: Allow for irq being shared
  mmc: sdhci-acpi: Add device id 80860F16
  mmc: sdhci-acpi: Fix broken card detect for ACPI HID 80860F14
  mmc: slot-gpio: Add GPIO descriptor based CD GPIO API
  mmc: slot-gpio: Split out CD IRQ request into a separate function
  mmc: slot-gpio: Record GPIO descriptors instead of GPIO numbers
  Revert "dts: socfpga: Add support for SD/MMC on the SOCFPGA platform"
  mmc: sdhci-spear: use generic card detection gpio support
  mmc: sdhci-spear: remove support for power gpio
  mmc: sdhci-spear: simplify resource handling
  mmc: sdhci-spear: fix platform_data usage
  mmc: sdhci-spear: fix error handling paths for DT
  mmc: sdhci-bcm-kona: fix build errors when built-in
  ...
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Documentation/devicetree/bindings/mmc/mmc.txt
浏览文件 @ 97e18dc0
......@@ -26,9 +26,18 @@ Optional properties:
this system, even if the controller claims it is.
- cap-sd-highspeed: SD high-speed timing is supported
- cap-mmc-highspeed: MMC high-speed timing is supported
- sd-uhs-sdr12: SD UHS SDR12 speed is supported
- sd-uhs-sdr25: SD UHS SDR25 speed is supported
- sd-uhs-sdr50: SD UHS SDR50 speed is supported
- sd-uhs-sdr104: SD UHS SDR104 speed is supported
- sd-uhs-ddr50: SD UHS DDR50 speed is supported
- cap-power-off-card: powering off the card is safe
- cap-sdio-irq: enable SDIO IRQ signalling on this interface
- full-pwr-cycle: full power cycle of the card is supported
- mmc-highspeed-ddr-1_8v: eMMC high-speed DDR mode(1.8V I/O) is supported
- mmc-highspeed-ddr-1_2v: eMMC high-speed DDR mode(1.2V I/O) is supported
- mmc-hs200-1_8v: eMMC HS200 mode(1.8V I/O) is supported
- mmc-hs200-1_2v: eMMC HS200 mode(1.2V I/O) is supported
*NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line
polarity properties, we have to fix the meaning of the "normal" and "inverted"
......
Documentation/devicetree/bindings/mmc/sdhci-msm.txt 0 → 100644
浏览文件 @ 97e18dc0
* Qualcomm SDHCI controller (sdhci-msm)
This file documents differences between the core properties in mmc.txt
and the properties used by the sdhci-msm driver.
Required properties:
- compatible: Should contain "qcom,sdhci-msm-v4".
- reg: Base address and length of the register in the following order:
- Host controller register map (required)
- SD Core register map (required)
- interrupts: Should contain an interrupt-specifiers for the interrupts:
- Host controller interrupt (required)
- pinctrl-names: Should contain only one value - "default".
- pinctrl-0: Should specify pin control groups used for this controller.
- clocks: A list of phandle + clock-specifier pairs for the clocks listed in clock-names.
- clock-names: Should contain the following:
"iface" - Main peripheral bus clock (PCLK/HCLK - AHB Bus clock) (required)
"core" - SDC MMC clock (MCLK) (required)
"bus" - SDCC bus voter clock (optional)
Example:
sdhc_1: sdhci@f9824900 {
compatible = "qcom,sdhci-msm-v4";
reg = <0xf9824900 0x11c>, <0xf9824000 0x800>;
interrupts = <0 123 0>;
bus-width = <8>;
non-removable;
vmmc = <&pm8941_l20>;
vqmmc = <&pm8941_s3>;
pinctrl-names = "default";
pinctrl-0 = <&sdc1_clk &sdc1_cmd &sdc1_data>;
clocks = <&gcc GCC_SDCC1_APPS_CLK>, <&gcc GCC_SDCC1_AHB_CLK>;
clock-names = "core", "iface";
};
sdhc_2: sdhci@f98a4900 {
compatible = "qcom,sdhci-msm-v4";
reg = <0xf98a4900 0x11c>, <0xf98a4000 0x800>;
interrupts = <0 125 0>;
bus-width = <4>;
cd-gpios = <&msmgpio 62 0x1>;
vmmc = <&pm8941_l21>;
vqmmc = <&pm8941_l13>;
pinctrl-names = "default";
pinctrl-0 = <&sdc2_clk &sdc2_cmd &sdc2_data>;
clocks = <&gcc GCC_SDCC2_APPS_CLK>, <&gcc GCC_SDCC2_AHB_CLK>;
clock-names = "core", "iface";
};
Documentation/devicetree/bindings/mmc/sdhci-pxa.txt
浏览文件 @ 97e18dc0
......@@ -4,7 +4,14 @@ This file documents differences between the core properties in mmc.txt
and the properties used by the sdhci-pxav2 and sdhci-pxav3 drivers.
Required properties:
- compatible: Should be "mrvl,pxav2-mmc" or "mrvl,pxav3-mmc".
- compatible: Should be "mrvl,pxav2-mmc", "mrvl,pxav3-mmc" or
"marvell,armada-380-sdhci".
- reg:
* for "mrvl,pxav2-mmc" and "mrvl,pxav3-mmc", one register area for
the SDHCI registers.
* for "marvell,armada-380-sdhci", two register areas. The first one
for the SDHCI registers themselves, and the second one for the
AXI/Mbus bridge registers of the SDHCI unit.
Optional properties:
- mrvl,clk-delay-cycles: Specify a number of cycles to delay for tuning.
......@@ -19,3 +26,11 @@ sdhci@d4280800 {
non-removable;
mrvl,clk-delay-cycles = <31>;
};
sdhci@d8000 {
compatible = "marvell,armada-380-sdhci";
reg = <0xd8000 0x1000>, <0xdc000 0x100>;
interrupts = <0 25 0x4>;
clocks = <&gateclk 17>;
mrvl,clk-delay-cycles = <0x1F>;
};
Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
浏览文件 @ 97e18dc0
......@@ -10,6 +10,7 @@ Required properties:
- compatible:
Should be "ti,omap2-hsmmc", for OMAP2 controllers
Should be "ti,omap3-hsmmc", for OMAP3 controllers
Should be "ti,omap3-pre-es3-hsmmc" for OMAP3 controllers pre ES3.0
Should be "ti,omap4-hsmmc", for OMAP4 controllers
- ti,hwmods: Must be "mmc<n>", n is controller instance starting 1
......
Documentation/devicetree/bindings/regulator/pbias-regulator.txt 0 → 100644
浏览文件 @ 97e18dc0
PBIAS internal regulator for SD card dual voltage i/o pads on OMAP SoCs.
Required properties:
- compatible:
- "ti,pbias-omap" for OMAP2, OMAP3, OMAP4, OMAP5, DRA7.
- reg: pbias register offset from syscon base and size of pbias register.
- syscon : phandle of the system control module
- regulator-name : should be
pbias_mmc_omap2430 for OMAP2430, OMAP3 SoCs
pbias_sim_omap3 for OMAP3 SoCs
pbias_mmc_omap4 for OMAP4 SoCs
pbias_mmc_omap5 for OMAP5 and DRA7 SoC
Optional properties:
- Any optional property defined in bindings/regulator/regulator.txt
Example:
pbias_regulator: pbias_regulator {
compatible = "ti,pbias-omap";
reg = <0 0x4>;
syscon = <&omap5_padconf_global>;
pbias_mmc_reg: pbias_mmc_omap5 {
regulator-name = "pbias_mmc_omap5";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3000000>;
};
MAINTAINERS
浏览文件 @ 97e18dc0
......@@ -5930,6 +5930,7 @@ F: include/linux/mfd/
MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND SDIO SUBSYSTEM
M: Chris Ball <chris@printf.net>
M: Ulf Hansson <ulf.hansson@linaro.org>
L: linux-mmc@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc.git
S: Maintained
......
arch/arm/boot/dts/dra7.dtsi
浏览文件 @ 97e18dc0
......@@ -154,6 +154,22 @@
ti,hwmods = "counter_32k";
};
dra7_ctrl_general: tisyscon@4a002e00 {
compatible = "syscon";
reg = <0x4a002e00 0x7c>;
};
pbias_regulator: pbias_regulator {
compatible = "ti,pbias-omap";
reg = <0 0x4>;
syscon = <&dra7_ctrl_general>;
pbias_mmc_reg: pbias_mmc_omap5 {
regulator-name = "pbias_mmc_omap5";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3000000>;
};
};
dra7_pmx_core: pinmux@4a003400 {
compatible = "pinctrl-single";
reg = <0x4a003400 0x0464>;
......@@ -543,6 +559,7 @@
dmas = <&sdma 61>, <&sdma 62>;
dma-names = "tx", "rx";
status = "disabled";
pbias-supply = <&pbias_mmc_reg>;
};
mmc2: mmc@480b4000 {
......
arch/arm/boot/dts/omap2430.dtsi
浏览文件 @ 97e18dc0
......@@ -29,6 +29,22 @@
pinctrl-single,function-mask = <0x3f>;
};
omap2_scm_general: tisyscon@49002270 {
compatible = "syscon";
reg = <0x49002270 0x240>;
};
pbias_regulator: pbias_regulator {
compatible = "ti,pbias-omap";
reg = <0x230 0x4>;
syscon = <&omap2_scm_general>;
pbias_mmc_reg: pbias_mmc_omap2430 {
regulator-name = "pbias_mmc_omap2430";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3000000>;
};
};
gpio1: gpio@4900c000 {
compatible = "ti,omap2-gpio";
reg = <0x4900c000 0x200>;
......@@ -188,6 +204,7 @@
ti,dual-volt;
dmas = <&sdma 61>, <&sdma 62>;
dma-names = "tx", "rx";
pbias-supply = <&pbias_mmc_reg>;
};
mmc2: mmc@480b4000 {
......
arch/arm/boot/dts/omap3-ldp.dts
浏览文件 @ 97e18dc0
......@@ -174,8 +174,20 @@
};
&mmc1 {
/* See 35xx errata 2.1.1.128 in SPRZ278F */
compatible = "ti,omap3-pre-es3-hsmmc";
vmmc-supply = <&vmmc1>;
bus-width = <4>;
pinctrl-names = "default";
pinctrl-0 = <&mmc1_pins>;
};
&mmc2 {
status="disabled";
};
&mmc3 {
status="disabled";
};
&omap3_pmx_core {
......@@ -209,6 +221,17 @@
0x174 (PIN_OUTPUT | MUX_MODE0) /* hsusb0_stp.hsusb0_stp */
>;
};
mmc1_pins: pinmux_mmc1_pins {
pinctrl-single,pins = <
OMAP3_CORE1_IOPAD(0x2144, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc1_clk.mmc1_clk */
OMAP3_CORE1_IOPAD(0x2146, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc1_cmd.mmc1_cmd */
OMAP3_CORE1_IOPAD(0x2148, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc1_dat0.mmc1_dat0 */
OMAP3_CORE1_IOPAD(0x214A, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc1_dat1.mmc1_dat1 */
OMAP3_CORE1_IOPAD(0x214C, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc1_dat2.mmc1_dat2 */
OMAP3_CORE1_IOPAD(0x214e, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc1_dat3.mmc1_dat3 */
>;
};
};
&usb_otg_hs {
......
arch/arm/boot/dts/omap3.dtsi
浏览文件 @ 97e18dc0
......@@ -181,6 +181,22 @@
pinctrl-single,function-mask = <0xff1f>;
};
omap3_scm_general: tisyscon@48002270 {
compatible = "syscon";
reg = <0x48002270 0x2f0>;
};
pbias_regulator: pbias_regulator {
compatible = "ti,pbias-omap";
reg = <0x2b0 0x4>;
syscon = <&omap3_scm_general>;
pbias_mmc_reg: pbias_mmc_omap2430 {
regulator-name = "pbias_mmc_omap2430";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3000000>;
};
};
gpio1: gpio@48310000 {
compatible = "ti,omap3-gpio";
reg = <0x48310000 0x200>;
......@@ -395,6 +411,7 @@
ti,dual-volt;
dmas = <&sdma 61>, <&sdma 62>;
dma-names = "tx", "rx";
pbias-supply = <&pbias_mmc_reg>;
};
mmc2: mmc@480b4000 {
......
arch/arm/boot/dts/omap4.dtsi
浏览文件 @ 97e18dc0
......@@ -191,6 +191,22 @@
pinctrl-single,function-mask = <0x7fff>;
};
omap4_padconf_global: tisyscon@4a1005a0 {
compatible = "syscon";
reg = <0x4a1005a0 0x170>;
};
pbias_regulator: pbias_regulator {
compatible = "ti,pbias-omap";
reg = <0x60 0x4>;
syscon = <&omap4_padconf_global>;
pbias_mmc_reg: pbias_mmc_omap4 {
regulator-name = "pbias_mmc_omap4";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3000000>;
};
};
sdma: dma-controller@4a056000 {
compatible = "ti,omap4430-sdma";
reg = <0x4a056000 0x1000>;
......@@ -427,6 +443,7 @@
ti,needs-special-reset;
dmas = <&sdma 61>, <&sdma 62>;
dma-names = "tx", "rx";
pbias-supply = <&pbias_mmc_reg>;
};
mmc2: mmc@480b4000 {
......
arch/arm/boot/dts/omap5.dtsi
浏览文件 @ 97e18dc0
......@@ -198,6 +198,22 @@
pinctrl-single,function-mask = <0x7fff>;
};
omap5_padconf_global: tisyscon@4a002da0 {
compatible = "syscon";
reg = <0x4A002da0 0xec>;
};
pbias_regulator: pbias_regulator {
compatible = "ti,pbias-omap";
reg = <0x60 0x4>;
syscon = <&omap5_padconf_global>;
pbias_mmc_reg: pbias_mmc_omap5 {
regulator-name = "pbias_mmc_omap5";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3000000>;
};
};
sdma: dma-controller@4a056000 {
compatible = "ti,omap4430-sdma";
reg = <0x4a056000 0x1000>;
......@@ -480,6 +496,7 @@
ti,needs-special-reset;
dmas = <&sdma 61>, <&sdma 62>;
dma-names = "tx", "rx";
pbias-supply = <&pbias_mmc_reg>;
};
mmc2: mmc@480b4000 {
......
arch/arm/configs/omap2plus_defconfig
浏览文件 @ 97e18dc0
......@@ -170,6 +170,7 @@ CONFIG_DRA752_THERMAL=y
CONFIG_WATCHDOG=y
CONFIG_OMAP_WATCHDOG=y
CONFIG_TWL4030_WATCHDOG=y
CONFIG_MFD_SYSCON=y
CONFIG_MFD_PALMAS=y
CONFIG_MFD_TPS65217=y
CONFIG_MFD_TPS65910=y
......@@ -181,6 +182,7 @@ CONFIG_REGULATOR_TPS6507X=y
CONFIG_REGULATOR_TPS65217=y
CONFIG_REGULATOR_TPS65910=y
CONFIG_REGULATOR_TWL4030=y
CONFIG_REGULATOR_PBIAS=y
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_MODE_HELPERS=y
......
drivers/mfd/rtsx_pcr.c
浏览文件 @ 97e18dc0
......@@ -338,58 +338,28 @@ int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int num_sg, bool read, int timeout)
{
struct completion trans_done;
u8 dir;
int err = 0, i, count;
int err = 0, count;
long timeleft;
unsigned long flags;
struct scatterlist *sg;
enum dma_data_direction dma_dir;
u32 val;
dma_addr_t addr;
unsigned int len;
dev_dbg(&(pcr->pci->dev), "--> %s: num_sg = %d\n", __func__, num_sg);
/* don't transfer data during abort processing */
if (pcr->remove_pci)
return -EINVAL;
if ((sglist == NULL) || (num_sg <= 0))
return -EINVAL;
if (read) {
dir = DEVICE_TO_HOST;
dma_dir = DMA_FROM_DEVICE;
} else {
dir = HOST_TO_DEVICE;
dma_dir = DMA_TO_DEVICE;
}
count = dma_map_sg(&(pcr->pci->dev), sglist, num_sg, dma_dir);
count = rtsx_pci_dma_map_sg(pcr, sglist, num_sg, read);
if (count < 1) {
dev_err(&(pcr->pci->dev), "scatterlist map failed\n");
return -EINVAL;
}
dev_dbg(&(pcr->pci->dev), "DMA mapping count: %d\n", count);
val = ((u32)(dir & 0x01) << 29) | TRIG_DMA | ADMA_MODE;
pcr->sgi = 0;
for_each_sg(sglist, sg, count, i) {
addr = sg_dma_address(sg);
len = sg_dma_len(sg);
rtsx_pci_add_sg_tbl(pcr, addr, len, i == count - 1);
}
spin_lock_irqsave(&pcr->lock, flags);
pcr->done = &trans_done;
pcr->trans_result = TRANS_NOT_READY;
init_completion(&trans_done);
rtsx_pci_writel(pcr, RTSX_HDBAR, pcr->host_sg_tbl_addr);
rtsx_pci_writel(pcr, RTSX_HDBCTLR, val);
spin_unlock_irqrestore(&pcr->lock, flags);
rtsx_pci_dma_transfer(pcr, sglist, count, read);
timeleft = wait_for_completion_interruptible_timeout(
&trans_done, msecs_to_jiffies(timeout));
if (timeleft <= 0) {
......@@ -413,7 +383,7 @@ int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist,
pcr->done = NULL;
spin_unlock_irqrestore(&pcr->lock, flags);
dma_unmap_sg(&(pcr->pci->dev), sglist, num_sg, dma_dir);
rtsx_pci_dma_unmap_sg(pcr, sglist, num_sg, read);
if ((err < 0) && (err != -ENODEV))
rtsx_pci_stop_cmd(pcr);
......@@ -425,6 +395,73 @@ int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist,
}
EXPORT_SYMBOL_GPL(rtsx_pci_transfer_data);
int rtsx_pci_dma_map_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int num_sg, bool read)
{
enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
if (pcr->remove_pci)
return -EINVAL;
if ((sglist == NULL) || num_sg < 1)
return -EINVAL;
return dma_map_sg(&(pcr->pci->dev), sglist, num_sg, dir);
}
EXPORT_SYMBOL_GPL(rtsx_pci_dma_map_sg);
int rtsx_pci_dma_unmap_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int num_sg, bool read)
{
enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
if (pcr->remove_pci)
return -EINVAL;
if (sglist == NULL || num_sg < 1)
return -EINVAL;
dma_unmap_sg(&(pcr->pci->dev), sglist, num_sg, dir);
return num_sg;
}
EXPORT_SYMBOL_GPL(rtsx_pci_dma_unmap_sg);
int rtsx_pci_dma_transfer(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int sg_count, bool read)
{
struct scatterlist *sg;
dma_addr_t addr;
unsigned int len;
int i;
u32 val;
u8 dir = read ? DEVICE_TO_HOST : HOST_TO_DEVICE;
unsigned long flags;
if (pcr->remove_pci)
return -EINVAL;
if ((sglist == NULL) || (sg_count < 1))
return -EINVAL;
val = ((u32)(dir & 0x01) << 29) | TRIG_DMA | ADMA_MODE;
pcr->sgi = 0;
for_each_sg(sglist, sg, sg_count, i) {
addr = sg_dma_address(sg);
len = sg_dma_len(sg);
rtsx_pci_add_sg_tbl(pcr, addr, len, i == sg_count - 1);
}
spin_lock_irqsave(&pcr->lock, flags);
rtsx_pci_writel(pcr, RTSX_HDBAR, pcr->host_sg_tbl_addr);
rtsx_pci_writel(pcr, RTSX_HDBCTLR, val);
spin_unlock_irqrestore(&pcr->lock, flags);
return 0;
}
EXPORT_SYMBOL_GPL(rtsx_pci_dma_transfer);
int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len)
{
int err;
......@@ -836,6 +873,8 @@ static irqreturn_t rtsx_pci_isr(int irq, void *dev_id)
int_reg = rtsx_pci_readl(pcr, RTSX_BIPR);
/* Clear interrupt flag */
rtsx_pci_writel(pcr, RTSX_BIPR, int_reg);
dev_dbg(&pcr->pci->dev, "=========== BIPR 0x%8x ==========\n", int_reg);
if ((int_reg & pcr->bier) == 0) {
spin_unlock(&pcr->lock);
return IRQ_NONE;
......@@ -866,17 +905,28 @@ static irqreturn_t rtsx_pci_isr(int irq, void *dev_id)
}
if (int_reg & (NEED_COMPLETE_INT | DELINK_INT)) {
if (int_reg & (TRANS_FAIL_INT | DELINK_INT)) {
if (int_reg & (TRANS_FAIL_INT | DELINK_INT))
pcr->trans_result = TRANS_RESULT_FAIL;
if (pcr->done)
complete(pcr->done);
} else if (int_reg & TRANS_OK_INT) {
else if (int_reg & TRANS_OK_INT)
pcr->trans_result = TRANS_RESULT_OK;
if (pcr->done)
complete(pcr->done);
if (pcr->done)
complete(pcr->done);
if (int_reg & SD_EXIST) {
struct rtsx_slot *slot = &pcr->slots[RTSX_SD_CARD];
if (slot && slot->done_transfer)
slot->done_transfer(slot->p_dev);
}
if (int_reg & MS_EXIST) {
struct rtsx_slot *slot = &pcr->slots[RTSX_SD_CARD];
if (slot && slot->done_transfer)
slot->done_transfer(slot->p_dev);
}
}
if (pcr->card_inserted || pcr->card_removed)
schedule_delayed_work(&pcr->carddet_work,
msecs_to_jiffies(200));
......
drivers/mmc/card/block.c
浏览文件 @ 97e18dc0
......@@ -415,8 +415,7 @@ static int ioctl_do_sanitize(struct mmc_card *card)
{
int err;
if (!(mmc_can_sanitize(card) &&
(card->host->caps2 & MMC_CAP2_SANITIZE))) {
if (!mmc_can_sanitize(card)) {
pr_warn("%s: %s - SANITIZE is not supported\n",
mmc_hostname(card->host), __func__);
err = -EOPNOTSUPP;
......@@ -722,19 +721,6 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
return result;
}
static int send_stop(struct mmc_card *card, u32 *status)
{
struct mmc_command cmd = {0};
int err;
cmd.opcode = MMC_STOP_TRANSMISSION;
cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
err = mmc_wait_for_cmd(card->host, &cmd, 5);
if (err == 0)
*status = cmd.resp[0];
return err;
}
static int get_card_status(struct mmc_card *card, u32 *status, int retries)
{
struct mmc_command cmd = {0};
......@@ -750,6 +736,99 @@ static int get_card_status(struct mmc_card *card, u32 *status, int retries)
return err;
}
static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms,
bool hw_busy_detect, struct request *req, int *gen_err)
{
unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
int err = 0;
u32 status;
do {
err = get_card_status(card, &status, 5);
if (err) {
pr_err("%s: error %d requesting status\n",
req->rq_disk->disk_name, err);
return err;
}
if (status & R1_ERROR) {
pr_err("%s: %s: error sending status cmd, status %#x\n",
req->rq_disk->disk_name, __func__, status);
*gen_err = 1;
}
/* We may rely on the host hw to handle busy detection.*/
if ((card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) &&
hw_busy_detect)
break;
/*
* Timeout if the device never becomes ready for data and never
* leaves the program state.
*/
if (time_after(jiffies, timeout)) {
pr_err("%s: Card stuck in programming state! %s %s\n",
mmc_hostname(card->host),
req->rq_disk->disk_name, __func__);
return -ETIMEDOUT;
}
/*
* Some cards mishandle the status bits,
* so make sure to check both the busy
* indication and the card state.
*/
} while (!(status & R1_READY_FOR_DATA) ||
(R1_CURRENT_STATE(status) == R1_STATE_PRG));
return err;
}
static int send_stop(struct mmc_card *card, unsigned int timeout_ms,
struct request *req, int *gen_err, u32 *stop_status)
{
struct mmc_host *host = card->host;
struct mmc_command cmd = {0};
int err;
bool use_r1b_resp = rq_data_dir(req) == WRITE;
/*
* Normally we use R1B responses for WRITE, but in cases where the host
* has specified a max_busy_timeout we need to validate it. A failure
* means we need to prevent the host from doing hw busy detection, which
* is done by converting to a R1 response instead.
*/
if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout))
use_r1b_resp = false;
cmd.opcode = MMC_STOP_TRANSMISSION;
if (use_r1b_resp) {
cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
cmd.busy_timeout = timeout_ms;
} else {
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
}
err = mmc_wait_for_cmd(host, &cmd, 5);
if (err)
return err;
*stop_status = cmd.resp[0];
/* No need to check card status in case of READ. */
if (rq_data_dir(req) == READ)
return 0;
if (!mmc_host_is_spi(host) &&
(*stop_status & R1_ERROR)) {
pr_err("%s: %s: general error sending stop command, resp %#x\n",
req->rq_disk->disk_name, __func__, *stop_status);
*gen_err = 1;
}
return card_busy_detect(card, timeout_ms, use_r1b_resp, req, gen_err);
}
#define ERR_NOMEDIUM 3
#define ERR_RETRY 2
#define ERR_ABORT 1
......@@ -866,26 +945,21 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req,
*/
if (R1_CURRENT_STATE(status) == R1_STATE_DATA ||
R1_CURRENT_STATE(status) == R1_STATE_RCV) {
err = send_stop(card, &stop_status);
if (err)
err = send_stop(card,
DIV_ROUND_UP(brq->data.timeout_ns, 1000000),
req, gen_err, &stop_status);
if (err) {
pr_err("%s: error %d sending stop command\n",
req->rq_disk->disk_name, err);
/*
* If the stop cmd also timed out, the card is probably
* not present, so abort. Other errors are bad news too.
*/
if (err)
/*
* If the stop cmd also timed out, the card is probably
* not present, so abort. Other errors are bad news too.
*/
return ERR_ABORT;
}
if (stop_status & R1_CARD_ECC_FAILED)
*ecc_err = 1;
if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ)
if (stop_status & R1_ERROR) {
pr_err("%s: %s: general error sending stop command, stop cmd response %#x\n",
req->rq_disk->disk_name, __func__,
stop_status);
*gen_err = 1;
}
}
/* Check for set block count errors */
......@@ -1157,8 +1231,7 @@ static int mmc_blk_err_check(struct mmc_card *card,
* program mode, which we have to wait for it to complete.
*/
if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) {
u32 status;
unsigned long timeout;
int err;
/* Check stop command response */
if (brq->stop.resp[0] & R1_ERROR) {
......@@ -1168,39 +1241,10 @@ static int mmc_blk_err_check(struct mmc_card *card,
gen_err = 1;
}
timeout = jiffies + msecs_to_jiffies(MMC_BLK_TIMEOUT_MS);
do {
int err = get_card_status(card, &status, 5);
if (err) {
pr_err("%s: error %d requesting status\n",
req->rq_disk->disk_name, err);
return MMC_BLK_CMD_ERR;
}
if (status & R1_ERROR) {
pr_err("%s: %s: general error sending status command, card status %#x\n",
req->rq_disk->disk_name, __func__,
status);
gen_err = 1;
}
/* Timeout if the device never becomes ready for data
* and never leaves the program state.
*/
if (time_after(jiffies, timeout)) {
pr_err("%s: Card stuck in programming state!"\
" %s %s\n", mmc_hostname(card->host),
req->rq_disk->disk_name, __func__);
return MMC_BLK_CMD_ERR;
}
/*
* Some cards mishandle the status bits,
* so make sure to check both the busy
* indication and the card state.
*/
} while (!(status & R1_READY_FOR_DATA) ||
(R1_CURRENT_STATE(status) == R1_STATE_PRG));
err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, false, req,
&gen_err);
if (err)
return MMC_BLK_CMD_ERR;
}
/* if general error occurs, retry the write operation. */
......@@ -1335,7 +1379,6 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
brq->data.blksz = 512;
brq->stop.opcode = MMC_STOP_TRANSMISSION;
brq->stop.arg = 0;
brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
brq->data.blocks = blk_rq_sectors(req);
/*
......@@ -1378,9 +1421,15 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
if (rq_data_dir(req) == READ) {
brq->cmd.opcode = readcmd;
brq->data.flags |= MMC_DATA_READ;
if (brq->mrq.stop)
brq->stop.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 |
MMC_CMD_AC;
} else {
brq->cmd.opcode = writecmd;
brq->data.flags |= MMC_DATA_WRITE;
if (brq->mrq.stop)
brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B |
MMC_CMD_AC;
}
if (do_rel_wr)
......
drivers/mmc/core/Kconfig
浏览文件 @ 97e18dc0
......@@ -2,21 +2,6 @@
# MMC core configuration
#
config MMC_UNSAFE_RESUME
bool "Assume MMC/SD cards are non-removable (DANGEROUS)"
help
If you say Y here, the MMC layer will assume that all cards
stayed in their respective slots during the suspend. The
normal behaviour is to remove them at suspend and
redetecting them at resume. Breaking this assumption will
in most cases result in data corruption.
This option is usually just for embedded systems which use
a MMC/SD card for rootfs. Most people should say N here.
This option sets a default which can be overridden by the
module parameter "removable=0" or "removable=1".
config MMC_CLKGATE
bool "MMC host clock gating"
help
......
drivers/mmc/core/bus.c
浏览文件 @ 97e18dc0
......@@ -185,24 +185,16 @@ static int mmc_runtime_suspend(struct device *dev)
{
struct mmc_card *card = mmc_dev_to_card(dev);
struct mmc_host *host = card->host;
int ret = 0;
if (host->bus_ops->runtime_suspend)
ret = host->bus_ops->runtime_suspend(host);
return ret;
return host->bus_ops->runtime_suspend(host);
}
static int mmc_runtime_resume(struct device *dev)
{
struct mmc_card *card = mmc_dev_to_card(dev);
struct mmc_host *host = card->host;
int ret = 0;
if (host->bus_ops->runtime_resume)
ret = host->bus_ops->runtime_resume(host);
return ret;
return host->bus_ops->runtime_resume(host);
}
static int mmc_runtime_idle(struct device *dev)
......
drivers/mmc/core/core.c
浏览文件 @ 97e18dc0
......@@ -34,6 +34,7 @@
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sd.h>
#include <linux/mmc/slot-gpio.h>
#include "core.h"
#include "bus.h"
......@@ -64,23 +65,6 @@ static const unsigned freqs[] = { 400000, 300000, 200000, 100000 };
bool use_spi_crc = 1;
module_param(use_spi_crc, bool, 0);
/*
* We normally treat cards as removed during suspend if they are not
* known to be on a non-removable bus, to avoid the risk of writing
* back data to a different card after resume. Allow this to be
* overridden if necessary.
*/
#ifdef CONFIG_MMC_UNSAFE_RESUME
bool mmc_assume_removable;
#else
bool mmc_assume_removable = 1;
#endif
EXPORT_SYMBOL(mmc_assume_removable);
module_param_named(removable, mmc_assume_removable, bool, 0644);
MODULE_PARM_DESC(
removable,
"MMC/SD cards are removable and may be removed during suspend");
/*
* Internal function. Schedule delayed work in the MMC work queue.
*/
......@@ -302,7 +286,8 @@ void mmc_start_bkops(struct mmc_card *card, bool from_exception)
}
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BKOPS_START, 1, timeout, use_busy_signal, true);
EXT_CSD_BKOPS_START, 1, timeout,
use_busy_signal, true, false);
if (err) {
pr_warn("%s: Error %d starting bkops\n",
mmc_hostname(card->host), err);
......@@ -1950,7 +1935,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
cmd.opcode = MMC_ERASE;
cmd.arg = arg;
cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
cmd.cmd_timeout_ms = mmc_erase_timeout(card, arg, qty);
cmd.busy_timeout = mmc_erase_timeout(card, arg, qty);
err = mmc_wait_for_cmd(card->host, &cmd, 0);
if (err) {
pr_err("mmc_erase: erase error %d, status %#x\n",
......@@ -2137,7 +2122,7 @@ static unsigned int mmc_do_calc_max_discard(struct mmc_card *card,
y = 0;
for (x = 1; x && x <= max_qty && max_qty - x >= qty; x <<= 1) {
timeout = mmc_erase_timeout(card, arg, qty + x);
if (timeout > host->max_discard_to)
if (timeout > host->max_busy_timeout)
break;
if (timeout < last_timeout)
break;
......@@ -2169,7 +2154,7 @@ unsigned int mmc_calc_max_discard(struct mmc_card *card)
struct mmc_host *host = card->host;
unsigned int max_discard, max_trim;
if (!host->max_discard_to)
if (!host->max_busy_timeout)
return UINT_MAX;
/*
......@@ -2189,7 +2174,7 @@ unsigned int mmc_calc_max_discard(struct mmc_card *card)
max_discard = 0;
}
pr_debug("%s: calculated max. discard sectors %u for timeout %u ms\n",
mmc_hostname(host), max_discard, host->max_discard_to);
mmc_hostname(host), max_discard, host->max_busy_timeout);
return max_discard;
}
EXPORT_SYMBOL(mmc_calc_max_discard);
......@@ -2248,9 +2233,6 @@ static int mmc_do_hw_reset(struct mmc_host *host, int check)
{
struct mmc_card *card = host->card;
if (!host->bus_ops->power_restore)
return -EOPNOTSUPP;
if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
return -EOPNOTSUPP;
......@@ -2352,7 +2334,7 @@ int _mmc_detect_card_removed(struct mmc_host *host)
{
int ret;
if ((host->caps & MMC_CAP_NONREMOVABLE) || !host->bus_ops->alive)
if (host->caps & MMC_CAP_NONREMOVABLE)
return 0;
if (!host->card || mmc_card_removed(host->card))
......@@ -2435,7 +2417,7 @@ void mmc_rescan(struct work_struct *work)
* if there is a _removable_ card registered, check whether it is
* still present
*/
if (host->bus_ops && host->bus_ops->detect && !host->bus_dead
if (host->bus_ops && !host->bus_dead
&& !(host->caps & MMC_CAP_NONREMOVABLE))
host->bus_ops->detect(host);
......@@ -2490,6 +2472,7 @@ void mmc_start_host(struct mmc_host *host)
mmc_power_off(host);
else
mmc_power_up(host, host->ocr_avail);
mmc_gpiod_request_cd_irq(host);
_mmc_detect_change(host, 0, false);
}
......@@ -2501,6 +2484,8 @@ void mmc_stop_host(struct mmc_host *host)
host->removed = 1;
spin_unlock_irqrestore(&host->lock, flags);
#endif
if (host->slot.cd_irq >= 0)
disable_irq(host->slot.cd_irq);
host->rescan_disable = 1;
cancel_delayed_work_sync(&host->detect);
......@@ -2537,7 +2522,7 @@ int mmc_power_save_host(struct mmc_host *host)
mmc_bus_get(host);
if (!host->bus_ops || host->bus_dead || !host->bus_ops->power_restore) {
if (!host->bus_ops || host->bus_dead) {
mmc_bus_put(host);
return -EINVAL;
}
......@@ -2563,7 +2548,7 @@ int mmc_power_restore_host(struct mmc_host *host)
mmc_bus_get(host);
if (!host->bus_ops || host->bus_dead || !host->bus_ops->power_restore) {
if (!host->bus_ops || host->bus_dead) {
mmc_bus_put(host);
return -EINVAL;
}
......@@ -2582,12 +2567,8 @@ EXPORT_SYMBOL(mmc_power_restore_host);
*/
int mmc_flush_cache(struct mmc_card *card)
{
struct mmc_host *host = card->host;
int err = 0;
if (!(host->caps2 & MMC_CAP2_CACHE_CTRL))
return err;
if (mmc_card_mmc(card) &&
(card->ext_csd.cache_size > 0) &&
(card->ext_csd.cache_ctrl & 1)) {
......@@ -2602,44 +2583,6 @@ int mmc_flush_cache(struct mmc_card *card)
}
EXPORT_SYMBOL(mmc_flush_cache);
/*
* Turn the cache ON/OFF.
* Turning the cache OFF shall trigger flushing of the data
* to the non-volatile storage.
* This function should be called with host claimed
*/
int mmc_cache_ctrl(struct mmc_host *host, u8 enable)
{
struct mmc_card *card = host->card;
unsigned int timeout;
int err = 0;
if (!(host->caps2 & MMC_CAP2_CACHE_CTRL) ||
mmc_card_is_removable(host))
return err;
if (card && mmc_card_mmc(card) &&
(card->ext_csd.cache_size > 0)) {
enable = !!enable;
if (card->ext_csd.cache_ctrl ^ enable) {
timeout = enable ? card->ext_csd.generic_cmd6_time : 0;
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_CACHE_CTRL, enable, timeout);
if (err)
pr_err("%s: cache %s error %d\n",
mmc_hostname(card->host),
enable ? "on" : "off",
err);
else
card->ext_csd.cache_ctrl = enable;
}
}
return err;
}
EXPORT_SYMBOL(mmc_cache_ctrl);
#ifdef CONFIG_PM
/* Do the card removal on suspend if card is assumed removeable
......@@ -2668,7 +2611,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
/* Validate prerequisites for suspend */
if (host->bus_ops->pre_suspend)
err = host->bus_ops->pre_suspend(host);
if (!err && host->bus_ops->suspend)
if (!err)
break;
/* Calling bus_ops->remove() with a claimed host can deadlock */
......
drivers/mmc/core/host.c
浏览文件 @ 97e18dc0
......@@ -419,6 +419,16 @@ int mmc_of_parse(struct mmc_host *host)
host->caps |= MMC_CAP_SD_HIGHSPEED;
if (of_find_property(np, "cap-mmc-highspeed", &len))
host->caps |= MMC_CAP_MMC_HIGHSPEED;
if (of_find_property(np, "sd-uhs-sdr12", &len))
host->caps |= MMC_CAP_UHS_SDR12;
if (of_find_property(np, "sd-uhs-sdr25", &len))
host->caps |= MMC_CAP_UHS_SDR25;
if (of_find_property(np, "sd-uhs-sdr50", &len))
host->caps |= MMC_CAP_UHS_SDR50;
if (of_find_property(np, "sd-uhs-sdr104", &len))
host->caps |= MMC_CAP_UHS_SDR104;
if (of_find_property(np, "sd-uhs-ddr50", &len))
host->caps |= MMC_CAP_UHS_DDR50;
if (of_find_property(np, "cap-power-off-card", &len))
host->caps |= MMC_CAP_POWER_OFF_CARD;
if (of_find_property(np, "cap-sdio-irq", &len))
......@@ -429,6 +439,14 @@ int mmc_of_parse(struct mmc_host *host)
host->pm_caps |= MMC_PM_KEEP_POWER;
if (of_find_property(np, "enable-sdio-wakeup", &len))
host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
if (of_find_property(np, "mmc-ddr-1_8v", &len))
host->caps |= MMC_CAP_1_8V_DDR;
if (of_find_property(np, "mmc-ddr-1_2v", &len))
host->caps |= MMC_CAP_1_2V_DDR;
if (of_find_property(np, "mmc-hs200-1_8v", &len))
host->caps2 |= MMC_CAP2_HS200_1_8V_SDR;
if (of_find_property(np, "mmc-hs200-1_2v", &len))
host->caps2 |= MMC_CAP2_HS200_1_2V_SDR;
return 0;
......
drivers/mmc/core/mmc.c
浏览文件 @ 97e18dc0
......@@ -856,8 +856,10 @@ static int mmc_select_hs200(struct mmc_card *card)
/* switch to HS200 mode if bus width set successfully */
if (!err)
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 2, 0);
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 2,
card->ext_csd.generic_cmd6_time,
true, true, true);
err:
return err;
}
......@@ -1074,9 +1076,10 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
host->caps2 & MMC_CAP2_HS200)
err = mmc_select_hs200(card);
else if (host->caps & MMC_CAP_MMC_HIGHSPEED)
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1,
card->ext_csd.generic_cmd6_time);
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1,
card->ext_csd.generic_cmd6_time,
true, true, true);
if (err && err != -EBADMSG)
goto free_card;
......@@ -1287,8 +1290,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
* If cache size is higher than 0, this indicates
* the existence of cache and it can be turned on.
*/
if ((host->caps2 & MMC_CAP2_CACHE_CTRL) &&
card->ext_csd.cache_size > 0) {
if (card->ext_csd.cache_size > 0) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_CACHE_CTRL, 1,
card->ext_csd.generic_cmd6_time);
......@@ -1356,11 +1358,9 @@ static int mmc_sleep(struct mmc_host *host)
{
struct mmc_command cmd = {0};
struct mmc_card *card = host->card;
unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000);
int err;
if (host->caps2 & MMC_CAP2_NO_SLEEP_CMD)
return 0;
err = mmc_deselect_cards(host);
if (err)
return err;
......@@ -1369,7 +1369,19 @@ static int mmc_sleep(struct mmc_host *host)
cmd.arg = card->rca << 16;
cmd.arg |= 1 << 15;
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
/*
* If the max_busy_timeout of the host is specified, validate it against
* the sleep cmd timeout. A failure means we need to prevent the host
* from doing hw busy detection, which is done by converting to a R1
* response instead of a R1B.
*/
if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) {
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
} else {
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
cmd.busy_timeout = timeout_ms;
}
err = mmc_wait_for_cmd(host, &cmd, 0);
if (err)
return err;
......@@ -1380,8 +1392,8 @@ static int mmc_sleep(struct mmc_host *host)
* SEND_STATUS command to poll the status because that command (and most
* others) is invalid while the card sleeps.
*/
if (!(host->caps & MMC_CAP_WAIT_WHILE_BUSY))
mmc_delay(DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000));
if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY))
mmc_delay(timeout_ms);
return err;
}
......@@ -1404,7 +1416,7 @@ static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type)
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_POWER_OFF_NOTIFICATION,
notify_type, timeout, true, false);
notify_type, timeout, true, false, false);
if (err)
pr_err("%s: Power Off Notification timed out, %u\n",
mmc_hostname(card->host), timeout);
......@@ -1484,7 +1496,7 @@ static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
goto out;
}
err = mmc_cache_ctrl(host, 0);
err = mmc_flush_cache(host->card);
if (err)
goto out;
......@@ -1634,16 +1646,6 @@ static int mmc_power_restore(struct mmc_host *host)
}
static const struct mmc_bus_ops mmc_ops = {
.remove = mmc_remove,
.detect = mmc_detect,
.suspend = NULL,
.resume = NULL,
.power_restore = mmc_power_restore,
.alive = mmc_alive,
.shutdown = mmc_shutdown,
};
static const struct mmc_bus_ops mmc_ops_unsafe = {
.remove = mmc_remove,
.detect = mmc_detect,
.suspend = mmc_suspend,
......@@ -1655,17 +1657,6 @@ static const struct mmc_bus_ops mmc_ops_unsafe = {
.shutdown = mmc_shutdown,
};
static void mmc_attach_bus_ops(struct mmc_host *host)
{
const struct mmc_bus_ops *bus_ops;
if (!mmc_card_is_removable(host))
bus_ops = &mmc_ops_unsafe;
else
bus_ops = &mmc_ops;
mmc_attach_bus(host, bus_ops);
}
/*
* Starting point for MMC card init.
*/
......@@ -1685,7 +1676,7 @@ int mmc_attach_mmc(struct mmc_host *host)
if (err)
return err;
mmc_attach_bus_ops(host);
mmc_attach_bus(host, &mmc_ops);
if (host->ocr_avail_mmc)
host->ocr_avail = host->ocr_avail_mmc;
......
drivers/mmc/core/mmc_ops.c
浏览文件 @ 97e18dc0
......@@ -405,20 +405,30 @@ int mmc_spi_set_crc(struct mmc_host *host, int use_crc)
* timeout of zero implies maximum possible timeout
* @use_busy_signal: use the busy signal as response type
* @send_status: send status cmd to poll for busy
* @ignore_crc: ignore CRC errors when sending status cmd to poll for busy
*
* Modifies the EXT_CSD register for selected card.
*/
int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
unsigned int timeout_ms, bool use_busy_signal, bool send_status)
unsigned int timeout_ms, bool use_busy_signal, bool send_status,
bool ignore_crc)
{
struct mmc_host *host = card->host;
int err;
struct mmc_command cmd = {0};
unsigned long timeout;
u32 status = 0;
bool ignore_crc = false;
bool use_r1b_resp = use_busy_signal;
BUG_ON(!card);
BUG_ON(!card->host);
/*
* If the cmd timeout and the max_busy_timeout of the host are both
* specified, let's validate them. A failure means we need to prevent
* the host from doing hw busy detection, which is done by converting
* to a R1 response instead of a R1B.
*/
if (timeout_ms && host->max_busy_timeout &&
(timeout_ms > host->max_busy_timeout))
use_r1b_resp = false;
cmd.opcode = MMC_SWITCH;
cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
......@@ -426,17 +436,21 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
(value << 8) |
set;
cmd.flags = MMC_CMD_AC;
if (use_busy_signal)
if (use_r1b_resp) {
cmd.flags |= MMC_RSP_SPI_R1B | MMC_RSP_R1B;
else
/*
* A busy_timeout of zero means the host can decide to use
* whatever value it finds suitable.
*/
cmd.busy_timeout = timeout_ms;
} else {
cmd.flags |= MMC_RSP_SPI_R1 | MMC_RSP_R1;
}
cmd.cmd_timeout_ms = timeout_ms;
if (index == EXT_CSD_SANITIZE_START)
cmd.sanitize_busy = true;
err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
if (err)
return err;
......@@ -445,24 +459,27 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
return 0;
/*
* Must check status to be sure of no errors
* If CMD13 is to check the busy completion of the timing change,
* disable the check of CRC error.
* CRC errors shall only be ignored in cases were CMD13 is used to poll
* to detect busy completion.
*/
if (index == EXT_CSD_HS_TIMING &&
!(card->host->caps & MMC_CAP_WAIT_WHILE_BUSY))
ignore_crc = true;
if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp)
ignore_crc = false;
/* We have an unspecified cmd timeout, use the fallback value. */
if (!timeout_ms)
timeout_ms = MMC_OPS_TIMEOUT_MS;
timeout = jiffies + msecs_to_jiffies(MMC_OPS_TIMEOUT_MS);
/* Must check status to be sure of no errors. */
timeout = jiffies + msecs_to_jiffies(timeout_ms);
do {
if (send_status) {
err = __mmc_send_status(card, &status, ignore_crc);
if (err)
return err;
}
if (card->host->caps & MMC_CAP_WAIT_WHILE_BUSY)
if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp)
break;
if (mmc_host_is_spi(card->host))
if (mmc_host_is_spi(host))
break;
/*
......@@ -478,18 +495,18 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
/* Timeout if the device never leaves the program state. */
if (time_after(jiffies, timeout)) {
pr_err("%s: Card stuck in programming state! %s\n",
mmc_hostname(card->host), __func__);
mmc_hostname(host), __func__);
return -ETIMEDOUT;
}
} while (R1_CURRENT_STATE(status) == R1_STATE_PRG);
if (mmc_host_is_spi(card->host)) {
if (mmc_host_is_spi(host)) {
if (status & R1_SPI_ILLEGAL_COMMAND)
return -EBADMSG;
} else {
if (status & 0xFDFFA000)
pr_warning("%s: unexpected status %#x after "
"switch", mmc_hostname(card->host), status);
pr_warn("%s: unexpected status %#x after switch\n",
mmc_hostname(host), status);
if (status & R1_SWITCH_ERROR)
return -EBADMSG;
}
......@@ -501,7 +518,8 @@ EXPORT_SYMBOL_GPL(__mmc_switch);
int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
unsigned int timeout_ms)
{
return __mmc_switch(card, set, index, value, timeout_ms, true, true);
return __mmc_switch(card, set, index, value, timeout_ms, true, true,
false);
}
EXPORT_SYMBOL_GPL(mmc_switch);
......
drivers/mmc/core/sd.c
浏览文件 @ 97e18dc0
......@@ -1207,16 +1207,6 @@ static int mmc_sd_power_restore(struct mmc_host *host)
}
static const struct mmc_bus_ops mmc_sd_ops = {
.remove = mmc_sd_remove,
.detect = mmc_sd_detect,
.suspend = NULL,
.resume = NULL,
.power_restore = mmc_sd_power_restore,
.alive = mmc_sd_alive,
.shutdown = mmc_sd_suspend,
};
static const struct mmc_bus_ops mmc_sd_ops_unsafe = {
.remove = mmc_sd_remove,
.detect = mmc_sd_detect,
.runtime_suspend = mmc_sd_runtime_suspend,
......@@ -1228,17 +1218,6 @@ static const struct mmc_bus_ops mmc_sd_ops_unsafe = {
.shutdown = mmc_sd_suspend,
};
static void mmc_sd_attach_bus_ops(struct mmc_host *host)
{
const struct mmc_bus_ops *bus_ops;
if (!mmc_card_is_removable(host))
bus_ops = &mmc_sd_ops_unsafe;
else
bus_ops = &mmc_sd_ops;
mmc_attach_bus(host, bus_ops);
}
/*
* Starting point for SD card init.
*/
......@@ -1254,7 +1233,7 @@ int mmc_attach_sd(struct mmc_host *host)
if (err)
return err;
mmc_sd_attach_bus_ops(host);
mmc_attach_bus(host, &mmc_sd_ops);
if (host->ocr_avail_sd)
host->ocr_avail = host->ocr_avail_sd;
......
drivers/mmc/core/slot-gpio.c
浏览文件 @ 97e18dc0
......@@ -10,6 +10,7 @@
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/mmc/host.h>
......@@ -18,8 +19,10 @@
#include <linux/slab.h>
struct mmc_gpio {
int ro_gpio;
int cd_gpio;
struct gpio_desc *ro_gpio;
struct gpio_desc *cd_gpio;
bool override_ro_active_level;
bool override_cd_active_level;
char *ro_label;
char cd_label[0];
};
......@@ -57,8 +60,6 @@ static int mmc_gpio_alloc(struct mmc_host *host)
ctx->ro_label = ctx->cd_label + len;
snprintf(ctx->cd_label, len, "%s cd", dev_name(host->parent));
snprintf(ctx->ro_label, len, "%s ro", dev_name(host->parent));
ctx->cd_gpio = -EINVAL;
ctx->ro_gpio = -EINVAL;
host->slot.handler_priv = ctx;
}
}
......@@ -72,11 +73,14 @@ int mmc_gpio_get_ro(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
if (!ctx || !gpio_is_valid(ctx->ro_gpio))
if (!ctx || !ctx->ro_gpio)
return -ENOSYS;
return !gpio_get_value_cansleep(ctx->ro_gpio) ^
!!(host->caps2 & MMC_CAP2_RO_ACTIVE_HIGH);
if (ctx->override_ro_active_level)
return !gpiod_get_raw_value_cansleep(ctx->ro_gpio) ^
!!(host->caps2 & MMC_CAP2_RO_ACTIVE_HIGH);
return gpiod_get_value_cansleep(ctx->ro_gpio);
}
EXPORT_SYMBOL(mmc_gpio_get_ro);
......@@ -84,11 +88,14 @@ int mmc_gpio_get_cd(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
if (!ctx || !gpio_is_valid(ctx->cd_gpio))
if (!ctx || !ctx->cd_gpio)
return -ENOSYS;
return !gpio_get_value_cansleep(ctx->cd_gpio) ^
!!(host->caps2 & MMC_CAP2_CD_ACTIVE_HIGH);
if (ctx->override_cd_active_level)
return !gpiod_get_raw_value_cansleep(ctx->cd_gpio) ^
!!(host->caps2 & MMC_CAP2_CD_ACTIVE_HIGH);
return gpiod_get_value_cansleep(ctx->cd_gpio);
}
EXPORT_SYMBOL(mmc_gpio_get_cd);
......@@ -125,12 +132,47 @@ int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio)
if (ret < 0)
return ret;
ctx->ro_gpio = gpio;
ctx->override_ro_active_level = true;
ctx->ro_gpio = gpio_to_desc(gpio);
return 0;
}
EXPORT_SYMBOL(mmc_gpio_request_ro);
void mmc_gpiod_request_cd_irq(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
int ret, irq;
if (host->slot.cd_irq >= 0 || !ctx || !ctx->cd_gpio)
return;
irq = gpiod_to_irq(ctx->cd_gpio);
/*
* Even if gpiod_to_irq() returns a valid IRQ number, the platform might
* still prefer to poll, e.g., because that IRQ number is already used
* by another unit and cannot be shared.
*/
if (irq >= 0 && host->caps & MMC_CAP_NEEDS_POLL)
irq = -EINVAL;
if (irq >= 0) {
ret = devm_request_threaded_irq(&host->class_dev, irq,
NULL, mmc_gpio_cd_irqt,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
ctx->cd_label, host);
if (ret < 0)
irq = ret;
}
host->slot.cd_irq = irq;
if (irq < 0)
host->caps |= MMC_CAP_NEEDS_POLL;
}
EXPORT_SYMBOL(mmc_gpiod_request_cd_irq);
/**
* mmc_gpio_request_cd - request a gpio for card-detection
* @host: mmc host
......@@ -154,7 +196,6 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio,
unsigned int debounce)
{
struct mmc_gpio *ctx;
int irq = gpio_to_irq(gpio);
int ret;
ret = mmc_gpio_alloc(host);
......@@ -179,29 +220,10 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio,
return ret;
}
/*
* Even if gpio_to_irq() returns a valid IRQ number, the platform might
* still prefer to poll, e.g., because that IRQ number is already used
* by another unit and cannot be shared.
*/
if (irq >= 0 && host->caps & MMC_CAP_NEEDS_POLL)
irq = -EINVAL;
if (irq >= 0) {
ret = devm_request_threaded_irq(&host->class_dev, irq,
NULL, mmc_gpio_cd_irqt,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
ctx->cd_label, host);
if (ret < 0)
irq = ret;
}
host->slot.cd_irq = irq;
if (irq < 0)
host->caps |= MMC_CAP_NEEDS_POLL;
ctx->override_cd_active_level = true;
ctx->cd_gpio = gpio_to_desc(gpio);
ctx->cd_gpio = gpio;
mmc_gpiod_request_cd_irq(host);
return 0;
}
......@@ -219,11 +241,11 @@ void mmc_gpio_free_ro(struct mmc_host *host)
struct mmc_gpio *ctx = host->slot.handler_priv;
int gpio;
if (!ctx || !gpio_is_valid(ctx->ro_gpio))
if (!ctx || !ctx->ro_gpio)
return;
gpio = ctx->ro_gpio;
ctx->ro_gpio = -EINVAL;
gpio = desc_to_gpio(ctx->ro_gpio);
ctx->ro_gpio = NULL;
devm_gpio_free(&host->class_dev, gpio);
}
......@@ -241,7 +263,7 @@ void mmc_gpio_free_cd(struct mmc_host *host)
struct mmc_gpio *ctx = host->slot.handler_priv;
int gpio;
if (!ctx || !gpio_is_valid(ctx->cd_gpio))
if (!ctx || !ctx->cd_gpio)
return;
if (host->slot.cd_irq >= 0) {
......@@ -249,9 +271,87 @@ void mmc_gpio_free_cd(struct mmc_host *host)
host->slot.cd_irq = -EINVAL;
}
gpio = ctx->cd_gpio;
ctx->cd_gpio = -EINVAL;
gpio = desc_to_gpio(ctx->cd_gpio);
ctx->cd_gpio = NULL;
devm_gpio_free(&host->class_dev, gpio);
}
EXPORT_SYMBOL(mmc_gpio_free_cd);
/**
* mmc_gpiod_request_cd - request a gpio descriptor for card-detection
* @host: mmc host
* @con_id: function within the GPIO consumer
* @idx: index of the GPIO to obtain in the consumer
* @override_active_level: ignore %GPIO_ACTIVE_LOW flag
* @debounce: debounce time in microseconds
*
* Use this function in place of mmc_gpio_request_cd() to use the GPIO
* descriptor API. Note that it is paired with mmc_gpiod_free_cd() not
* mmc_gpio_free_cd(). Note also that it must be called prior to mmc_add_host()
* otherwise the caller must also call mmc_gpiod_request_cd_irq().
*
* Returns zero on success, else an error.
*/
int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id,
unsigned int idx, bool override_active_level,
unsigned int debounce)
{
struct mmc_gpio *ctx;
struct gpio_desc *desc;
int ret;
ret = mmc_gpio_alloc(host);
if (ret < 0)
return ret;
ctx = host->slot.handler_priv;
if (!con_id)
con_id = ctx->cd_label;
desc = devm_gpiod_get_index(host->parent, con_id, idx);
if (IS_ERR(desc))
return PTR_ERR(desc);
ret = gpiod_direction_input(desc);
if (ret < 0)
return ret;
if (debounce) {
ret = gpiod_set_debounce(desc, debounce);
if (ret < 0)
return ret;
}
ctx->override_cd_active_level = override_active_level;
ctx->cd_gpio = desc;
return 0;
}
EXPORT_SYMBOL(mmc_gpiod_request_cd);
/**
* mmc_gpiod_free_cd - free the card-detection gpio descriptor
* @host: mmc host
*
* It's provided only for cases that client drivers need to manually free
* up the card-detection gpio requested by mmc_gpiod_request_cd().
*/
void mmc_gpiod_free_cd(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
if (!ctx || !ctx->cd_gpio)
return;
if (host->slot.cd_irq >= 0) {
devm_free_irq(&host->class_dev, host->slot.cd_irq, host);
host->slot.cd_irq = -EINVAL;
}
devm_gpiod_put(&host->class_dev, ctx->cd_gpio);
ctx->cd_gpio = NULL;
}
EXPORT_SYMBOL(mmc_gpiod_free_cd);
drivers/mmc/host/Kconfig
浏览文件 @ 97e18dc0
......@@ -263,7 +263,7 @@ config MMC_SDHCI_S3C_DMA
config MMC_SDHCI_BCM_KONA
tristate "SDHCI support on Broadcom KONA platform"
depends on ARCH_BCM
depends on ARCH_BCM_MOBILE
select MMC_SDHCI_PLTFM
help
This selects the Broadcom Kona Secure Digital Host Controller
......@@ -334,6 +334,19 @@ config MMC_ATMELMCI
If unsure, say N.
config MMC_SDHCI_MSM
tristate "Qualcomm SDHCI Controller Support"
depends on ARCH_QCOM
depends on MMC_SDHCI_PLTFM
help
This selects the Secure Digital Host Controller Interface (SDHCI)
support present in Qualcomm SOCs. The controller supports
SD/MMC/SDIO devices.
If you have a controller with this interface, say Y or M here.
If unsure, say N.
config MMC_MSM
tristate "Qualcomm SDCC Controller Support"
depends on MMC && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
......@@ -580,14 +593,6 @@ config MMC_DW_EXYNOS
Synopsys DesignWare Memory Card Interface driver. Select this option
for platforms based on Exynos4 and Exynos5 SoC's.
config MMC_DW_SOCFPGA
tristate "SOCFPGA specific extensions for Synopsys DW Memory Card Interface"
depends on MMC_DW && MFD_SYSCON
select MMC_DW_PLTFM
help
This selects support for Altera SoCFPGA specific extensions to the
Synopsys DesignWare Memory Card Interface driver.
config MMC_DW_K3
tristate "K3 specific extensions for Synopsys DW Memory Card Interface"
depends on MMC_DW
......
drivers/mmc/host/Makefile
浏览文件 @ 97e18dc0
......@@ -43,7 +43,6 @@ obj-$(CONFIG_SDH_BFIN) += bfin_sdh.o
obj-$(CONFIG_MMC_DW) += dw_mmc.o
obj-$(CONFIG_MMC_DW_PLTFM) += dw_mmc-pltfm.o
obj-$(CONFIG_MMC_DW_EXYNOS) += dw_mmc-exynos.o
obj-$(CONFIG_MMC_DW_SOCFPGA) += dw_mmc-socfpga.o
obj-$(CONFIG_MMC_DW_K3) += dw_mmc-k3.o
obj-$(CONFIG_MMC_DW_PCI) += dw_mmc-pci.o
obj-$(CONFIG_MMC_SH_MMCIF) += sh_mmcif.o
......@@ -64,6 +63,7 @@ obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o
obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o
obj-$(CONFIG_MMC_SDHCI_BCM_KONA) += sdhci-bcm-kona.o
obj-$(CONFIG_MMC_SDHCI_BCM2835) += sdhci-bcm2835.o
obj-$(CONFIG_MMC_SDHCI_MSM) += sdhci-msm.o
ifeq ($(CONFIG_CB710_DEBUG),y)
CFLAGS-cb710-mmc += -DDEBUG
......
drivers/mmc/host/davinci_mmc.c
浏览文件 @ 97e18dc0
......@@ -1192,7 +1192,7 @@ static struct davinci_mmc_config
struct device_node *np;
struct davinci_mmc_config *pdata = pdev->dev.platform_data;
const struct of_device_id *match =
of_match_device(of_match_ptr(davinci_mmc_dt_ids), &pdev->dev);
of_match_device(davinci_mmc_dt_ids, &pdev->dev);
u32 data;
np = pdev->dev.of_node;
......@@ -1468,7 +1468,7 @@ static struct platform_driver davinci_mmcsd_driver = {
.name = "davinci_mmc",
.owner = THIS_MODULE,
.pm = davinci_mmcsd_pm_ops,
.of_match_table = of_match_ptr(davinci_mmc_dt_ids),
.of_match_table = davinci_mmc_dt_ids,
},
.remove = __exit_p(davinci_mmcsd_remove),
.id_table = davinci_mmc_devtype,
......
drivers/mmc/host/dw_mmc-k3.c
浏览文件 @ 97e18dc0
......@@ -50,6 +50,7 @@ static int dw_mci_k3_probe(struct platform_device *pdev)
return dw_mci_pltfm_register(pdev, drv_data);
}
#ifdef CONFIG_PM_SLEEP
static int dw_mci_k3_suspend(struct device *dev)
{
struct dw_mci *host = dev_get_drvdata(dev);
......@@ -75,6 +76,7 @@ static int dw_mci_k3_resume(struct device *dev)
return dw_mci_resume(host);
}
#endif /* CONFIG_PM_SLEEP */
static SIMPLE_DEV_PM_OPS(dw_mci_k3_pmops, dw_mci_k3_suspend, dw_mci_k3_resume);
......
drivers/mmc/host/dw_mmc-pltfm.c
浏览文件 @ 97e18dc0
......@@ -25,13 +25,17 @@
#include "dw_mmc.h"
#include "dw_mmc-pltfm.h"
static void dw_mci_rockchip_prepare_command(struct dw_mci *host, u32 *cmdr)
static void dw_mci_pltfm_prepare_command(struct dw_mci *host, u32 *cmdr)
{
*cmdr |= SDMMC_CMD_USE_HOLD_REG;
}
static const struct dw_mci_drv_data rockchip_drv_data = {
.prepare_command = dw_mci_rockchip_prepare_command,
.prepare_command = dw_mci_pltfm_prepare_command,
};
static const struct dw_mci_drv_data socfpga_drv_data = {
.prepare_command = dw_mci_pltfm_prepare_command,
};
int dw_mci_pltfm_register(struct platform_device *pdev,
......@@ -92,6 +96,8 @@ static const struct of_device_id dw_mci_pltfm_match[] = {
{ .compatible = "snps,dw-mshc", },
{ .compatible = "rockchip,rk2928-dw-mshc",
.data = &rockchip_drv_data },
{ .compatible = "altr,socfpga-dw-mshc",
.data = &socfpga_drv_data },
{},
};
MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
......@@ -123,7 +129,7 @@ static struct platform_driver dw_mci_pltfm_driver = {
.remove = dw_mci_pltfm_remove,
.driver = {
.name = "dw_mmc",
.of_match_table = of_match_ptr(dw_mci_pltfm_match),
.of_match_table = dw_mci_pltfm_match,
.pm = &dw_mci_pltfm_pmops,
},
};
......
drivers/mmc/host/dw_mmc-socfpga.c 已删除 100644 → 0
浏览文件 @ 042f7b7c
/*
* Altera SoCFPGA Specific Extensions for Synopsys DW Multimedia Card Interface
* driver
*
* Copyright (C) 2012, Samsung Electronics Co., Ltd.
* Copyright (C) 2013 Altera Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Taken from dw_mmc-exynos.c
*/
#include <linux/clk.h>
#include <linux/mfd/syscon.h>
#include <linux/mmc/host.h>
#include <linux/mmc/dw_mmc.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include "dw_mmc.h"
#include "dw_mmc-pltfm.h"
#define SYSMGR_SDMMCGRP_CTRL_OFFSET 0x108
#define DRV_CLK_PHASE_SHIFT_SEL_MASK 0x7
#define SYSMGR_SDMMC_CTRL_SET(smplsel, drvsel) \
((((smplsel) & 0x7) << 3) | (((drvsel) & 0x7) << 0))
/* SOCFPGA implementation specific driver private data */
struct dw_mci_socfpga_priv_data {
u8 ciu_div; /* card interface unit divisor */
u32 hs_timing; /* bitmask for CIU clock phase shift */
struct regmap *sysreg; /* regmap for system manager register */
};
static int dw_mci_socfpga_priv_init(struct dw_mci *host)
{
return 0;
}
static int dw_mci_socfpga_setup_clock(struct dw_mci *host)
{
struct dw_mci_socfpga_priv_data *priv = host->priv;
clk_disable_unprepare(host->ciu_clk);
regmap_write(priv->sysreg, SYSMGR_SDMMCGRP_CTRL_OFFSET,
priv->hs_timing);
clk_prepare_enable(host->ciu_clk);
host->bus_hz /= (priv->ciu_div + 1);
return 0;
}
static void dw_mci_socfpga_prepare_command(struct dw_mci *host, u32 *cmdr)
{
struct dw_mci_socfpga_priv_data *priv = host->priv;
if (priv->hs_timing & DRV_CLK_PHASE_SHIFT_SEL_MASK)
*cmdr |= SDMMC_CMD_USE_HOLD_REG;
}
static int dw_mci_socfpga_parse_dt(struct dw_mci *host)
{
struct dw_mci_socfpga_priv_data *priv;
struct device_node *np = host->dev->of_node;
u32 timing[2];
u32 div = 0;
int ret;
priv = devm_kzalloc(host->dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(host->dev, "mem alloc failed for private data\n");
return -ENOMEM;
}
priv->sysreg = syscon_regmap_lookup_by_compatible("altr,sys-mgr");
if (IS_ERR(priv->sysreg)) {
dev_err(host->dev, "regmap for altr,sys-mgr lookup failed.\n");
return PTR_ERR(priv->sysreg);
}
ret = of_property_read_u32(np, "altr,dw-mshc-ciu-div", &div);
if (ret)
dev_info(host->dev, "No dw-mshc-ciu-div specified, assuming 1");
priv->ciu_div = div;
ret = of_property_read_u32_array(np,
"altr,dw-mshc-sdr-timing", timing, 2);
if (ret)
return ret;
priv->hs_timing = SYSMGR_SDMMC_CTRL_SET(timing[0], timing[1]);
host->priv = priv;
return 0;
}
static const struct dw_mci_drv_data socfpga_drv_data = {
.init = dw_mci_socfpga_priv_init,
.setup_clock = dw_mci_socfpga_setup_clock,
.prepare_command = dw_mci_socfpga_prepare_command,
.parse_dt = dw_mci_socfpga_parse_dt,
};
static const struct of_device_id dw_mci_socfpga_match[] = {
{ .compatible = "altr,socfpga-dw-mshc",
.data = &socfpga_drv_data, },
{},
};
MODULE_DEVICE_TABLE(of, dw_mci_socfpga_match);
static int dw_mci_socfpga_probe(struct platform_device *pdev)
{
const struct dw_mci_drv_data *drv_data;
const struct of_device_id *match;
match = of_match_node(dw_mci_socfpga_match, pdev->dev.of_node);
drv_data = match->data;
return dw_mci_pltfm_register(pdev, drv_data);
}
static struct platform_driver dw_mci_socfpga_pltfm_driver = {
.probe = dw_mci_socfpga_probe,
.remove = __exit_p(dw_mci_pltfm_remove),
.driver = {
.name = "dwmmc_socfpga",
.of_match_table = dw_mci_socfpga_match,
.pm = &dw_mci_pltfm_pmops,
},
};
module_platform_driver(dw_mci_socfpga_pltfm_driver);
MODULE_DESCRIPTION("Altera SOCFPGA Specific DW-MSHC Driver Extension");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:dwmmc-socfpga");
drivers/mmc/host/dw_mmc.c
浏览文件 @ 97e18dc0
......@@ -1345,7 +1345,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
if (!err) {
if (!data->stop || mrq->sbc) {
if (mrq->sbc)
if (mrq->sbc && data->stop)
data->stop->error = 0;
dw_mci_request_end(host, mrq);
goto unlock;
......
drivers/mmc/host/dw_mmc.h
浏览文件 @ 97e18dc0
......@@ -185,7 +185,7 @@
extern int dw_mci_probe(struct dw_mci *host);
extern void dw_mci_remove(struct dw_mci *host);
#ifdef CONFIG_PM
#ifdef CONFIG_PM_SLEEP
extern int dw_mci_suspend(struct dw_mci *host);
extern int dw_mci_resume(struct dw_mci *host);
#endif
......@@ -244,6 +244,7 @@ struct dw_mci_tuning_data {
* @prepare_command: handle CMD register extensions.
* @set_ios: handle bus specific extensions.
* @parse_dt: parse implementation specific device tree properties.
* @execute_tuning: implementation specific tuning procedure.
*
* Provide controller implementation specific extensions. The usage of this
* data structure is fully optional and usage of each member in this structure
......
drivers/mmc/host/mmci.c
浏览文件 @ 97e18dc0
......@@ -921,6 +921,29 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
{
void __iomem *base = host->base;
bool sbc = (cmd == host->mrq->sbc);
bool busy_resp = host->variant->busy_detect &&
(cmd->flags & MMC_RSP_BUSY);
/* Check if we need to wait for busy completion. */
if (host->busy_status && (status & MCI_ST_CARDBUSY))
return;
/* Enable busy completion if needed and supported. */
if (!host->busy_status && busy_resp &&
!(status & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT)) &&
(readl(base + MMCISTATUS) & MCI_ST_CARDBUSY)) {
writel(readl(base + MMCIMASK0) | MCI_ST_BUSYEND,
base + MMCIMASK0);
host->busy_status = status & (MCI_CMDSENT|MCI_CMDRESPEND);
return;
}
/* At busy completion, mask the IRQ and complete the request. */
if (host->busy_status) {
writel(readl(base + MMCIMASK0) & ~MCI_ST_BUSYEND,
base + MMCIMASK0);
host->busy_status = 0;
}
host->cmd = NULL;
......@@ -1139,20 +1162,30 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
status &= ~MCI_IRQ1MASK;
}
/*
* We intentionally clear the MCI_ST_CARDBUSY IRQ here (if it's
* enabled) since the HW seems to be triggering the IRQ on both
* edges while monitoring DAT0 for busy completion.
*/
status &= readl(host->base + MMCIMASK0);
writel(status, host->base + MMCICLEAR);
dev_dbg(mmc_dev(host->mmc), "irq0 (data+cmd) %08x\n", status);
cmd = host->cmd;
if ((status|host->busy_status) & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT|
MCI_CMDSENT|MCI_CMDRESPEND) && cmd)
mmci_cmd_irq(host, cmd, status);
data = host->data;
if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_STARTBITERR|
MCI_TXUNDERRUN|MCI_RXOVERRUN|MCI_DATAEND|
MCI_DATABLOCKEND) && data)
mmci_data_irq(host, data, status);
cmd = host->cmd;
if (status & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT|MCI_CMDSENT|MCI_CMDRESPEND) && cmd)
mmci_cmd_irq(host, cmd, status);
/* Don't poll for busy completion in irq context. */
if (host->busy_status)
status &= ~MCI_ST_CARDBUSY;
ret = 1;
} while (status);
......@@ -1503,12 +1536,6 @@ static int mmci_probe(struct amba_device *dev,
goto clk_disable;
}
if (variant->busy_detect) {
mmci_ops.card_busy = mmci_card_busy;
mmci_write_datactrlreg(host, MCI_ST_DPSM_BUSYMODE);
}
mmc->ops = &mmci_ops;
/*
* The ARM and ST versions of the block have slightly different
* clock divider equations which means that the minimum divider
......@@ -1542,6 +1569,15 @@ static int mmci_probe(struct amba_device *dev,
mmc->caps = plat->capabilities;
mmc->caps2 = plat->capabilities2;
if (variant->busy_detect) {
mmci_ops.card_busy = mmci_card_busy;
mmci_write_datactrlreg(host, MCI_ST_DPSM_BUSYMODE);
mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
mmc->max_busy_timeout = 0;
}
mmc->ops = &mmci_ops;
/* We support these PM capabilities. */
mmc->pm_caps = MMC_PM_KEEP_POWER;
......
drivers/mmc/host/mmci.h
浏览文件 @ 97e18dc0
......@@ -140,6 +140,7 @@
/* Extended status bits for the ST Micro variants */
#define MCI_ST_SDIOITMASK (1 << 22)
#define MCI_ST_CEATAENDMASK (1 << 23)
#define MCI_ST_BUSYEND (1 << 24)
#define MMCIMASK1 0x040
#define MMCIFIFOCNT 0x048
......@@ -187,6 +188,7 @@ struct mmci_host {
u32 pwr_reg;
u32 clk_reg;
u32 datactrl_reg;
u32 busy_status;
bool vqmmc_enabled;
struct mmci_platform_data *plat;
struct variant_data *variant;
......
drivers/mmc/host/omap.c
浏览文件 @ 97e18dc0
......@@ -26,6 +26,7 @@
#include <linux/omap-dma.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/mmc/mmc.h>
#include <linux/clk.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
......@@ -130,7 +131,6 @@ struct mmc_omap_host {
u32 dma_rx_burst;
struct dma_chan *dma_tx;
u32 dma_tx_burst;
struct resource *mem_res;
void __iomem *virt_base;
unsigned int phys_base;
int irq;
......@@ -153,7 +153,6 @@ struct mmc_omap_host {
u32 total_bytes_left;
unsigned features;
unsigned use_dma:1;
unsigned brs_received:1, dma_done:1;
unsigned dma_in_use:1;
spinlock_t dma_lock;
......@@ -338,6 +337,7 @@ mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd)
u32 cmdreg;
u32 resptype;
u32 cmdtype;
u16 irq_mask;
host->cmd = cmd;
......@@ -390,12 +390,14 @@ mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd)
OMAP_MMC_WRITE(host, CTO, 200);
OMAP_MMC_WRITE(host, ARGL, cmd->arg & 0xffff);
OMAP_MMC_WRITE(host, ARGH, cmd->arg >> 16);
OMAP_MMC_WRITE(host, IE,
OMAP_MMC_STAT_A_EMPTY | OMAP_MMC_STAT_A_FULL |
OMAP_MMC_STAT_CMD_CRC | OMAP_MMC_STAT_CMD_TOUT |
OMAP_MMC_STAT_DATA_CRC | OMAP_MMC_STAT_DATA_TOUT |
OMAP_MMC_STAT_END_OF_CMD | OMAP_MMC_STAT_CARD_ERR |
OMAP_MMC_STAT_END_OF_DATA);
irq_mask = OMAP_MMC_STAT_A_EMPTY | OMAP_MMC_STAT_A_FULL |
OMAP_MMC_STAT_CMD_CRC | OMAP_MMC_STAT_CMD_TOUT |
OMAP_MMC_STAT_DATA_CRC | OMAP_MMC_STAT_DATA_TOUT |
OMAP_MMC_STAT_END_OF_CMD | OMAP_MMC_STAT_CARD_ERR |
OMAP_MMC_STAT_END_OF_DATA;
if (cmd->opcode == MMC_ERASE)
irq_mask &= ~OMAP_MMC_STAT_DATA_TOUT;
OMAP_MMC_WRITE(host, IE, irq_mask);
OMAP_MMC_WRITE(host, CMD, cmdreg);
}
......@@ -945,7 +947,7 @@ static void
mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
{
struct mmc_data *data = req->data;
int i, use_dma, block_size;
int i, use_dma = 1, block_size;
unsigned sg_len;
host->data = data;
......@@ -970,13 +972,10 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
sg_len = (data->blocks == 1) ? 1 : data->sg_len;
/* Only do DMA for entire blocks */
use_dma = host->use_dma;
if (use_dma) {
for (i = 0; i < sg_len; i++) {
if ((data->sg[i].length % block_size) != 0) {
use_dma = 0;
break;
}
for (i = 0; i < sg_len; i++) {
if ((data->sg[i].length % block_size) != 0) {
use_dma = 0;
break;
}
}
......@@ -1239,7 +1238,7 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id)
mmc->caps = 0;
if (host->pdata->slots[id].wires >= 4)
mmc->caps |= MMC_CAP_4_BIT_DATA;
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_ERASE;
mmc->ops = &mmc_omap_ops;
mmc->f_min = 400000;
......@@ -1262,6 +1261,13 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id)
mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
mmc->max_seg_size = mmc->max_req_size;
if (slot->pdata->get_cover_state != NULL) {
setup_timer(&slot->cover_timer, mmc_omap_cover_timer,
(unsigned long)slot);
tasklet_init(&slot->cover_tasklet, mmc_omap_cover_handler,
(unsigned long)slot);
}
r = mmc_add_host(mmc);
if (r < 0)
goto err_remove_host;
......@@ -1278,11 +1284,6 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id)
&dev_attr_cover_switch);
if (r < 0)
goto err_remove_slot_name;
setup_timer(&slot->cover_timer, mmc_omap_cover_timer,
(unsigned long)slot);
tasklet_init(&slot->cover_tasklet, mmc_omap_cover_handler,
(unsigned long)slot);
tasklet_schedule(&slot->cover_tasklet);
}
......@@ -1333,21 +1334,19 @@ static int mmc_omap_probe(struct platform_device *pdev)
return -EPROBE_DEFER;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host = devm_kzalloc(&pdev->dev, sizeof(struct mmc_omap_host),
GFP_KERNEL);
if (host == NULL)
return -ENOMEM;
irq = platform_get_irq(pdev, 0);
if (res == NULL || irq < 0)
if (irq < 0)
return -ENXIO;
res = request_mem_region(res->start, resource_size(res),
pdev->name);
if (res == NULL)
return -EBUSY;
host = kzalloc(sizeof(struct mmc_omap_host), GFP_KERNEL);
if (host == NULL) {
ret = -ENOMEM;
goto err_free_mem_region;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host->virt_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(host->virt_base))
return PTR_ERR(host->virt_base);
INIT_WORK(&host->slot_release_work, mmc_omap_slot_release_work);
INIT_WORK(&host->send_stop_work, mmc_omap_send_stop_work);
......@@ -1369,20 +1368,11 @@ static int mmc_omap_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, host);
host->id = pdev->id;
host->mem_res = res;
host->irq = irq;
host->use_dma = 1;
host->irq = irq;
host->phys_base = host->mem_res->start;
host->virt_base = ioremap(res->start, resource_size(res));
if (!host->virt_base)
goto err_ioremap;
host->phys_base = res->start;
host->iclk = clk_get(&pdev->dev, "ick");
if (IS_ERR(host->iclk)) {
ret = PTR_ERR(host->iclk);
goto err_free_mmc_host;
}
if (IS_ERR(host->iclk))
return PTR_ERR(host->iclk);
clk_enable(host->iclk);
host->fclk = clk_get(&pdev->dev, "fck");
......@@ -1460,12 +1450,6 @@ static int mmc_omap_probe(struct platform_device *pdev)
err_free_iclk:
clk_disable(host->iclk);
clk_put(host->iclk);
err_free_mmc_host:
iounmap(host->virt_base);
err_ioremap:
kfree(host);
err_free_mem_region:
release_mem_region(res->start, resource_size(res));
return ret;
}
......@@ -1493,13 +1477,8 @@ static int mmc_omap_remove(struct platform_device *pdev)
if (host->dma_rx)
dma_release_channel(host->dma_rx);
iounmap(host->virt_base);
release_mem_region(pdev->resource[0].start,
pdev->resource[0].end - pdev->resource[0].start + 1);
destroy_workqueue(host->mmc_omap_wq);
kfree(host);
return 0;
}
......
drivers/mmc/host/omap_hsmmc.c
浏览文件 @ 97e18dc0
......@@ -45,6 +45,7 @@
/* OMAP HSMMC Host Controller Registers */
#define OMAP_HSMMC_SYSSTATUS 0x0014
#define OMAP_HSMMC_CON 0x002C
#define OMAP_HSMMC_SDMASA 0x0100
#define OMAP_HSMMC_BLK 0x0104
#define OMAP_HSMMC_ARG 0x0108
#define OMAP_HSMMC_CMD 0x010C
......@@ -58,6 +59,7 @@
#define OMAP_HSMMC_STAT 0x0130
#define OMAP_HSMMC_IE 0x0134
#define OMAP_HSMMC_ISE 0x0138
#define OMAP_HSMMC_AC12 0x013C
#define OMAP_HSMMC_CAPA 0x0140
#define VS18 (1 << 26)
......@@ -81,6 +83,7 @@
#define DTO_MASK 0x000F0000
#define DTO_SHIFT 16
#define INIT_STREAM (1 << 1)
#define ACEN_ACMD23 (2 << 2)
#define DP_SELECT (1 << 21)
#define DDIR (1 << 4)
#define DMAE 0x1
......@@ -97,7 +100,6 @@
#define SRC (1 << 25)
#define SRD (1 << 26)
#define SOFTRESET (1 << 1)
#define RESETDONE (1 << 0)
/* Interrupt masks for IE and ISE register */
#define CC_EN (1 << 0)
......@@ -112,13 +114,21 @@
#define DTO_EN (1 << 20)
#define DCRC_EN (1 << 21)
#define DEB_EN (1 << 22)
#define ACE_EN (1 << 24)
#define CERR_EN (1 << 28)
#define BADA_EN (1 << 29)
#define INT_EN_MASK (BADA_EN | CERR_EN | DEB_EN | DCRC_EN |\
#define INT_EN_MASK (BADA_EN | CERR_EN | ACE_EN | DEB_EN | DCRC_EN |\
DTO_EN | CIE_EN | CEB_EN | CCRC_EN | CTO_EN | \
BRR_EN | BWR_EN | TC_EN | CC_EN)
#define CNI (1 << 7)
#define ACIE (1 << 4)
#define ACEB (1 << 3)
#define ACCE (1 << 2)
#define ACTO (1 << 1)
#define ACNE (1 << 0)
#define MMC_AUTOSUSPEND_DELAY 100
#define MMC_TIMEOUT_MS 20 /* 20 mSec */
#define MMC_TIMEOUT_US 20000 /* 20000 micro Sec */
......@@ -126,6 +136,11 @@
#define OMAP_MMC_MAX_CLOCK 52000000
#define DRIVER_NAME "omap_hsmmc"
#define VDD_1V8 1800000 /* 180000 uV */
#define VDD_3V0 3000000 /* 300000 uV */
#define VDD_165_195 (ffs(MMC_VDD_165_195) - 1)
#define AUTO_CMD23 (1 << 1) /* Auto CMD23 support */
/*
* One controller can have multiple slots, like on some omap boards using
* omap.c controller driver. Luckily this is not currently done on any known
......@@ -164,7 +179,8 @@ struct omap_hsmmc_host {
*/
struct regulator *vcc;
struct regulator *vcc_aux;
int pbias_disable;
struct regulator *pbias;
bool pbias_enabled;
void __iomem *base;
resource_size_t mapbase;
spinlock_t irq_lock; /* Prevent races with irq handler */
......@@ -188,10 +204,19 @@ struct omap_hsmmc_host {
int reqs_blocked;
int use_reg;
int req_in_progress;
unsigned long clk_rate;
unsigned int flags;
struct omap_hsmmc_next next_data;
struct omap_mmc_platform_data *pdata;
};
struct omap_mmc_of_data {
u32 reg_offset;
u8 controller_flags;
};
static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host);
static int omap_hsmmc_card_detect(struct device *dev, int slot)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
......@@ -261,17 +286,19 @@ static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on,
*/
if (!host->vcc)
return 0;
/*
* With DT, never turn OFF the regulator for MMC1. This is because
* the pbias cell programming support is still missing when
* booting with Device tree
*/
if (host->pbias_disable && !vdd)
return 0;
if (mmc_slot(host).before_set_reg)
mmc_slot(host).before_set_reg(dev, slot, power_on, vdd);
if (host->pbias) {
if (host->pbias_enabled == 1) {
ret = regulator_disable(host->pbias);
if (!ret)
host->pbias_enabled = 0;
}
regulator_set_voltage(host->pbias, VDD_3V0, VDD_3V0);
}
/*
* Assume Vcc regulator is used only to power the card ... OMAP
* VDDS is used to power the pins, optionally with a transceiver to
......@@ -286,11 +313,12 @@ static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on,
* chips/cards need an interface voltage rail too.
*/
if (power_on) {
ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd);
if (host->vcc)
ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd);
/* Enable interface voltage rail, if needed */
if (ret == 0 && host->vcc_aux) {
ret = regulator_enable(host->vcc_aux);
if (ret < 0)
if (ret < 0 && host->vcc)
ret = mmc_regulator_set_ocr(host->mmc,
host->vcc, 0);
}
......@@ -298,16 +326,34 @@ static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on,
/* Shut down the rail */
if (host->vcc_aux)
ret = regulator_disable(host->vcc_aux);
if (!ret) {
if (host->vcc) {
/* Then proceed to shut down the local regulator */
ret = mmc_regulator_set_ocr(host->mmc,
host->vcc, 0);
}
}
if (host->pbias) {
if (vdd <= VDD_165_195)
ret = regulator_set_voltage(host->pbias, VDD_1V8,
VDD_1V8);
else
ret = regulator_set_voltage(host->pbias, VDD_3V0,
VDD_3V0);
if (ret < 0)
goto error_set_power;
if (host->pbias_enabled == 0) {
ret = regulator_enable(host->pbias);
if (!ret)
host->pbias_enabled = 1;
}
}
if (mmc_slot(host).after_set_reg)
mmc_slot(host).after_set_reg(dev, slot, power_on, vdd);
error_set_power:
return ret;
}
......@@ -316,12 +362,12 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
struct regulator *reg;
int ocr_value = 0;
reg = regulator_get(host->dev, "vmmc");
reg = devm_regulator_get(host->dev, "vmmc");
if (IS_ERR(reg)) {
dev_err(host->dev, "vmmc regulator missing\n");
dev_err(host->dev, "unable to get vmmc regulator %ld\n",
PTR_ERR(reg));
return PTR_ERR(reg);
} else {
mmc_slot(host).set_power = omap_hsmmc_set_power;
host->vcc = reg;
ocr_value = mmc_regulator_get_ocrmask(reg);
if (!mmc_slot(host).ocr_mask) {
......@@ -334,31 +380,29 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
return -EINVAL;
}
}
}
mmc_slot(host).set_power = omap_hsmmc_set_power;
/* Allow an aux regulator */
reg = regulator_get(host->dev, "vmmc_aux");
host->vcc_aux = IS_ERR(reg) ? NULL : reg;
/* Allow an aux regulator */
reg = devm_regulator_get_optional(host->dev, "vmmc_aux");
host->vcc_aux = IS_ERR(reg) ? NULL : reg;
/* For eMMC do not power off when not in sleep state */
if (mmc_slot(host).no_regulator_off_init)
return 0;
/*
* UGLY HACK: workaround regulator framework bugs.
* When the bootloader leaves a supply active, it's
* initialized with zero usecount ... and we can't
* disable it without first enabling it. Until the
* framework is fixed, we need a workaround like this
* (which is safe for MMC, but not in general).
*/
if (regulator_is_enabled(host->vcc) > 0 ||
(host->vcc_aux && regulator_is_enabled(host->vcc_aux))) {
int vdd = ffs(mmc_slot(host).ocr_mask) - 1;
reg = devm_regulator_get_optional(host->dev, "pbias");
host->pbias = IS_ERR(reg) ? NULL : reg;
mmc_slot(host).set_power(host->dev, host->slot_id,
1, vdd);
mmc_slot(host).set_power(host->dev, host->slot_id,
0, 0);
}
/* For eMMC do not power off when not in sleep state */
if (mmc_slot(host).no_regulator_off_init)
return 0;
/*
* To disable boot_on regulator, enable regulator
* to increase usecount and then disable it.
*/
if ((host->vcc && regulator_is_enabled(host->vcc) > 0) ||
(host->vcc_aux && regulator_is_enabled(host->vcc_aux))) {
int vdd = ffs(mmc_slot(host).ocr_mask) - 1;
mmc_slot(host).set_power(host->dev, host->slot_id, 1, vdd);
mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0);
}
return 0;
......@@ -366,8 +410,6 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
static void omap_hsmmc_reg_put(struct omap_hsmmc_host *host)
{
regulator_put(host->vcc);
regulator_put(host->vcc_aux);
mmc_slot(host).set_power = NULL;
}
......@@ -605,9 +647,6 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
u32 hctl, capa;
unsigned long timeout;
if (!OMAP_HSMMC_READ(host->base, SYSSTATUS) & RESETDONE)
return 1;
if (host->con == OMAP_HSMMC_READ(host->base, CON) &&
host->hctl == OMAP_HSMMC_READ(host->base, HCTL) &&
host->sysctl == OMAP_HSMMC_READ(host->base, SYSCTL) &&
......@@ -787,6 +826,11 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd,
cmdreg = (cmd->opcode << 24) | (resptype << 16) | (cmdtype << 22);
if ((host->flags & AUTO_CMD23) && mmc_op_multi(cmd->opcode) &&
host->mrq->sbc) {
cmdreg |= ACEN_ACMD23;
OMAP_HSMMC_WRITE(host->base, SDMASA, host->mrq->sbc->arg);
}
if (data) {
cmdreg |= DP_SELECT | MSBS | BCE;
if (data->flags & MMC_DATA_READ)
......@@ -864,11 +908,10 @@ omap_hsmmc_xfer_done(struct omap_hsmmc_host *host, struct mmc_data *data)
else
data->bytes_xfered = 0;
if (!data->stop) {
if (data->stop && (data->error || !host->mrq->sbc))
omap_hsmmc_start_command(host, data->stop, NULL);
else
omap_hsmmc_request_done(host, data->mrq);
return;
}
omap_hsmmc_start_command(host, data->stop, NULL);
}
/*
......@@ -879,6 +922,14 @@ omap_hsmmc_cmd_done(struct omap_hsmmc_host *host, struct mmc_command *cmd)
{
host->cmd = NULL;
if (host->mrq->sbc && (host->cmd == host->mrq->sbc) &&
!host->mrq->sbc->error && !(host->flags & AUTO_CMD23)) {
omap_hsmmc_start_dma_transfer(host);
omap_hsmmc_start_command(host, host->mrq->cmd,
host->mrq->data);
return;
}
if (cmd->flags & MMC_RSP_PRESENT) {
if (cmd->flags & MMC_RSP_136) {
/* response type 2 */
......@@ -892,7 +943,7 @@ omap_hsmmc_cmd_done(struct omap_hsmmc_host *host, struct mmc_command *cmd)
}
}
if ((host->data == NULL && !host->response_busy) || cmd->error)
omap_hsmmc_request_done(host, cmd->mrq);
omap_hsmmc_request_done(host, host->mrq);
}
/*
......@@ -1015,6 +1066,7 @@ static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
{
struct mmc_data *data;
int end_cmd = 0, end_trans = 0;
int error = 0;
data = host->data;
dev_vdbg(mmc_dev(host->mmc), "IRQ Status is %x\n", status);
......@@ -1029,6 +1081,20 @@ static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
else if (status & (CCRC_EN | DCRC_EN))
hsmmc_command_incomplete(host, -EILSEQ, end_cmd);
if (status & ACE_EN) {
u32 ac12;
ac12 = OMAP_HSMMC_READ(host->base, AC12);
if (!(ac12 & ACNE) && host->mrq->sbc) {
end_cmd = 1;
if (ac12 & ACTO)
error = -ETIMEDOUT;
else if (ac12 & (ACCE | ACEB | ACIE))
error = -EILSEQ;
host->mrq->sbc->error = error;
hsmmc_command_incomplete(host, error, end_cmd);
}
dev_dbg(mmc_dev(host->mmc), "AC12 err: 0x%x\n", ac12);
}
if (host->data || host->response_busy) {
end_trans = !end_cmd;
host->response_busy = 0;
......@@ -1236,8 +1302,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
}
/* Check if next job is already prepared */
if (next ||
(!next && data->host_cookie != host->next_data.cookie)) {
if (next || data->host_cookie != host->next_data.cookie) {
dma_len = dma_map_sg(chan->device->dev, data->sg, data->sg_len,
omap_hsmmc_get_dma_dir(host, data));
......@@ -1262,7 +1327,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
/*
* Routine to configure and start DMA for the MMC card
*/
static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host,
static int omap_hsmmc_setup_dma_transfer(struct omap_hsmmc_host *host,
struct mmc_request *req)
{
struct dma_slave_config cfg;
......@@ -1321,8 +1386,6 @@ static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host,
host->dma_ch = 1;
dma_async_issue_pending(chan);
return 0;
}
......@@ -1338,7 +1401,7 @@ static void set_data_timeout(struct omap_hsmmc_host *host,
if (clkd == 0)
clkd = 1;
cycle_ns = 1000000000 / (clk_get_rate(host->fclk) / clkd);
cycle_ns = 1000000000 / (host->clk_rate / clkd);
timeout = timeout_ns / cycle_ns;
timeout += timeout_clks;
if (timeout) {
......@@ -1363,6 +1426,21 @@ static void set_data_timeout(struct omap_hsmmc_host *host,
OMAP_HSMMC_WRITE(host->base, SYSCTL, reg);
}
static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host)
{
struct mmc_request *req = host->mrq;
struct dma_chan *chan;
if (!req->data)
return;
OMAP_HSMMC_WRITE(host->base, BLK, (req->data->blksz)
| (req->data->blocks << 16));
set_data_timeout(host, req->data->timeout_ns,
req->data->timeout_clks);
chan = omap_hsmmc_get_dma_chan(host, req->data);
dma_async_issue_pending(chan);
}
/*
* Configure block length for MMC/SD cards and initiate the transfer.
*/
......@@ -1383,12 +1461,8 @@ omap_hsmmc_prepare_data(struct omap_hsmmc_host *host, struct mmc_request *req)
return 0;
}
OMAP_HSMMC_WRITE(host->base, BLK, (req->data->blksz)
| (req->data->blocks << 16));
set_data_timeout(host, req->data->timeout_ns, req->data->timeout_clks);
if (host->use_dma) {
ret = omap_hsmmc_start_dma_transfer(host, req);
ret = omap_hsmmc_setup_dma_transfer(host, req);
if (ret != 0) {
dev_err(mmc_dev(host->mmc), "MMC start dma failure\n");
return ret;
......@@ -1462,6 +1536,7 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req)
host->reqs_blocked = 0;
WARN_ON(host->mrq != NULL);
host->mrq = req;
host->clk_rate = clk_get_rate(host->fclk);
err = omap_hsmmc_prepare_data(host, req);
if (err) {
req->cmd->error = err;
......@@ -1471,7 +1546,12 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req)
mmc_request_done(mmc, req);
return;
}
if (req->sbc && !(host->flags & AUTO_CMD23)) {
omap_hsmmc_start_command(host, req->sbc, NULL);
return;
}
omap_hsmmc_start_dma_transfer(host);
omap_hsmmc_start_command(host, req->cmd, req->data);
}
......@@ -1509,13 +1589,7 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
* of external transceiver; but they all handle 1.8V.
*/
if ((OMAP_HSMMC_READ(host->base, HCTL) & SDVSDET) &&
(ios->vdd == DUAL_VOLT_OCR_BIT) &&
/*
* With pbias cell programming missing, this
* can't be allowed on MMC1 when booting with device
* tree.
*/
!host->pbias_disable) {
(ios->vdd == DUAL_VOLT_OCR_BIT)) {
/*
* The mmc_select_voltage fn of the core does
* not seem to set the power_mode to
......@@ -1678,18 +1752,29 @@ static void omap_hsmmc_debugfs(struct mmc_host *mmc)
#endif
#ifdef CONFIG_OF
static u16 omap4_reg_offset = 0x100;
static const struct omap_mmc_of_data omap3_pre_es3_mmc_of_data = {
/* See 35xx errata 2.1.1.128 in SPRZ278F */
.controller_flags = OMAP_HSMMC_BROKEN_MULTIBLOCK_READ,
};
static const struct omap_mmc_of_data omap4_mmc_of_data = {
.reg_offset = 0x100,
};
static const struct of_device_id omap_mmc_of_match[] = {
{
.compatible = "ti,omap2-hsmmc",
},
{
.compatible = "ti,omap3-pre-es3-hsmmc",
.data = &omap3_pre_es3_mmc_of_data,
},
{
.compatible = "ti,omap3-hsmmc",
},
{
.compatible = "ti,omap4-hsmmc",
.data = &omap4_reg_offset,
.data = &omap4_mmc_of_data,
},
{},
};
......@@ -1709,7 +1794,7 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return NULL; /* out of memory */
return ERR_PTR(-ENOMEM); /* out of memory */
if (of_find_property(np, "ti,dual-volt", NULL))
pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT;
......@@ -1738,13 +1823,19 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
if (of_find_property(np, "ti,needs-special-hs-handling", NULL))
pdata->slots[0].features |= HSMMC_HAS_HSPE_SUPPORT;
if (of_find_property(np, "keep-power-in-suspend", NULL))
pdata->slots[0].pm_caps |= MMC_PM_KEEP_POWER;
if (of_find_property(np, "enable-sdio-wakeup", NULL))
pdata->slots[0].pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
return pdata;
}
#else
static inline struct omap_mmc_platform_data
*of_get_hsmmc_pdata(struct device *dev)
{
return NULL;
return ERR_PTR(-EINVAL);
}
#endif
......@@ -1759,6 +1850,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
dma_cap_mask_t mask;
unsigned tx_req, rx_req;
struct pinctrl *pinctrl;
const struct omap_mmc_of_data *data;
match = of_match_device(of_match_ptr(omap_mmc_of_match), &pdev->dev);
if (match) {
......@@ -1768,8 +1860,9 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
return PTR_ERR(pdata);
if (match->data) {
const u16 *offsetp = match->data;
pdata->reg_offset = *offsetp;
data = match->data;
pdata->reg_offset = data->reg_offset;
pdata->controller_flags |= data->controller_flags;
}
}
......@@ -1814,6 +1907,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
host->base = ioremap(host->mapbase, SZ_4K);
host->power_mode = MMC_POWER_OFF;
host->next_data.cookie = 1;
host->pbias_enabled = 0;
platform_set_drvdata(pdev, host);
......@@ -1847,10 +1941,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
omap_hsmmc_context_save(host);
/* This can be removed once we support PBIAS with DT */
if (host->dev->of_node && res->start == 0x4809c000)
host->pbias_disable = 1;
host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
/*
* MMC can still work without debounce clock.
......
drivers/mmc/host/rtsx_pci_sdmmc.c
浏览文件 @ 97e18dc0
......@@ -31,14 +31,9 @@
#include <linux/mfd/rtsx_pci.h>
#include <asm/unaligned.h>
/* SD Tuning Data Structure
* Record continuous timing phase path
*/
struct timing_phase_path {
int start;
int end;
int mid;
int len;
struct realtek_next {
unsigned int sg_count;
s32 cookie;
};
struct realtek_pci_sdmmc {
......@@ -46,9 +41,18 @@ struct realtek_pci_sdmmc {
struct rtsx_pcr *pcr;
struct mmc_host *mmc;
struct mmc_request *mrq;
struct mutex host_mutex;
struct mmc_command *cmd;
struct mmc_data *data;
spinlock_t lock;
struct timer_list timer;
struct tasklet_struct cmd_tasklet;
struct tasklet_struct data_tasklet;
struct tasklet_struct finish_tasklet;
u8 rsp_type;
u8 rsp_len;
int sg_count;
u8 ssc_depth;
unsigned int clock;
bool vpclk;
......@@ -58,8 +62,13 @@ struct realtek_pci_sdmmc {
int power_state;
#define SDMMC_POWER_ON 1
#define SDMMC_POWER_OFF 0
struct realtek_next next_data;
};
static int sd_start_multi_rw(struct realtek_pci_sdmmc *host,
struct mmc_request *mrq);
static inline struct device *sdmmc_dev(struct realtek_pci_sdmmc *host)
{
return &(host->pdev->dev);
......@@ -96,6 +105,95 @@ static void sd_print_debug_regs(struct realtek_pci_sdmmc *host)
#define sd_print_debug_regs(host)
#endif /* DEBUG */
static void sd_isr_done_transfer(struct platform_device *pdev)
{
struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev);
spin_lock(&host->lock);
if (host->cmd)
tasklet_schedule(&host->cmd_tasklet);
if (host->data)
tasklet_schedule(&host->data_tasklet);
spin_unlock(&host->lock);
}
static void sd_request_timeout(unsigned long host_addr)
{
struct realtek_pci_sdmmc *host = (struct realtek_pci_sdmmc *)host_addr;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (!host->mrq) {
dev_err(sdmmc_dev(host), "error: no request exist\n");
goto out;
}
if (host->cmd)
host->cmd->error = -ETIMEDOUT;
if (host->data)
host->data->error = -ETIMEDOUT;
dev_dbg(sdmmc_dev(host), "timeout for request\n");
out:
tasklet_schedule(&host->finish_tasklet);
spin_unlock_irqrestore(&host->lock, flags);
}
static void sd_finish_request(unsigned long host_addr)
{
struct realtek_pci_sdmmc *host = (struct realtek_pci_sdmmc *)host_addr;
struct rtsx_pcr *pcr = host->pcr;
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
unsigned long flags;
bool any_error;
spin_lock_irqsave(&host->lock, flags);
del_timer(&host->timer);
mrq = host->mrq;
if (!mrq) {
dev_err(sdmmc_dev(host), "error: no request need finish\n");
goto out;
}
cmd = mrq->cmd;
data = mrq->data;
any_error = (mrq->sbc && mrq->sbc->error) ||
(mrq->stop && mrq->stop->error) ||
(cmd && cmd->error) || (data && data->error);
if (any_error) {
rtsx_pci_stop_cmd(pcr);
sd_clear_error(host);
}
if (data) {
if (any_error)
data->bytes_xfered = 0;
else
data->bytes_xfered = data->blocks * data->blksz;
if (!data->host_cookie)
rtsx_pci_dma_unmap_sg(pcr, data->sg, data->sg_len,
data->flags & MMC_DATA_READ);
}
host->mrq = NULL;
host->cmd = NULL;
host->data = NULL;
out:
spin_unlock_irqrestore(&host->lock, flags);
mutex_unlock(&pcr->pcr_mutex);
mmc_request_done(host->mmc, mrq);
}
static int sd_read_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt,
u8 *buf, int buf_len, int timeout)
{
......@@ -213,8 +311,7 @@ static int sd_write_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt,
return 0;
}
static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
struct mmc_command *cmd)
static void sd_send_cmd(struct realtek_pci_sdmmc *host, struct mmc_command *cmd)
{
struct rtsx_pcr *pcr = host->pcr;
u8 cmd_idx = (u8)cmd->opcode;
......@@ -222,11 +319,14 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
int err = 0;
int timeout = 100;
int i;
u8 *ptr;
int stat_idx = 0;
u8 rsp_type;
int rsp_len = 5;
bool clock_toggled = false;
unsigned long flags;
if (host->cmd)
dev_err(sdmmc_dev(host), "error: cmd already exist\n");
host->cmd = cmd;
dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n",
__func__, cmd_idx, arg);
......@@ -261,6 +361,8 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
err = -EINVAL;
goto out;
}
host->rsp_type = rsp_type;
host->rsp_len = rsp_len;
if (rsp_type == SD_RSP_TYPE_R1b)
timeout = 3000;
......@@ -270,8 +372,6 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
0xFF, SD_CLK_TOGGLE_EN);
if (err < 0)
goto out;
clock_toggled = true;
}
rtsx_pci_init_cmd(pcr);
......@@ -295,25 +395,60 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
/* Read data from ping-pong buffer */
for (i = PPBUF_BASE2; i < PPBUF_BASE2 + 16; i++)
rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0);
stat_idx = 16;
} else if (rsp_type != SD_RSP_TYPE_R0) {
/* Read data from SD_CMDx registers */
for (i = SD_CMD0; i <= SD_CMD4; i++)
rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0);
stat_idx = 5;
}
rtsx_pci_add_cmd(pcr, READ_REG_CMD, SD_STAT1, 0, 0);
err = rtsx_pci_send_cmd(pcr, timeout);
if (err < 0) {
sd_print_debug_regs(host);
sd_clear_error(host);
dev_dbg(sdmmc_dev(host),
"rtsx_pci_send_cmd error (err = %d)\n", err);
mod_timer(&host->timer, jiffies + msecs_to_jiffies(timeout));
spin_lock_irqsave(&pcr->lock, flags);
pcr->trans_result = TRANS_NOT_READY;
rtsx_pci_send_cmd_no_wait(pcr);
spin_unlock_irqrestore(&pcr->lock, flags);
return;
out:
cmd->error = err;
tasklet_schedule(&host->finish_tasklet);
}
static void sd_get_rsp(unsigned long host_addr)
{
struct realtek_pci_sdmmc *host = (struct realtek_pci_sdmmc *)host_addr;
struct rtsx_pcr *pcr = host->pcr;
struct mmc_command *cmd;
int i, err = 0, stat_idx;
u8 *ptr, rsp_type;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
cmd = host->cmd;
host->cmd = NULL;
if (!cmd) {
dev_err(sdmmc_dev(host), "error: cmd not exist\n");
goto out;
}
spin_lock(&pcr->lock);
if (pcr->trans_result == TRANS_NO_DEVICE)
err = -ENODEV;
else if (pcr->trans_result != TRANS_RESULT_OK)
err = -EINVAL;
spin_unlock(&pcr->lock);
if (err < 0)
goto out;
rsp_type = host->rsp_type;
stat_idx = host->rsp_len;
if (rsp_type == SD_RSP_TYPE_R0) {
err = 0;
goto out;
......@@ -350,26 +485,106 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
cmd->resp[0]);
}
if (cmd == host->mrq->sbc) {
sd_send_cmd(host, host->mrq->cmd);
spin_unlock_irqrestore(&host->lock, flags);
return;
}
if (cmd == host->mrq->stop)
goto out;
if (cmd->data) {
sd_start_multi_rw(host, host->mrq);
spin_unlock_irqrestore(&host->lock, flags);
return;
}
out:
cmd->error = err;
if (err && clock_toggled)
rtsx_pci_write_register(pcr, SD_BUS_STAT,
SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0);
tasklet_schedule(&host->finish_tasklet);
spin_unlock_irqrestore(&host->lock, flags);
}
static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq)
static int sd_pre_dma_transfer(struct realtek_pci_sdmmc *host,
struct mmc_data *data, struct realtek_next *next)
{
struct rtsx_pcr *pcr = host->pcr;
int read = data->flags & MMC_DATA_READ;
int sg_count = 0;
if (!next && data->host_cookie &&
data->host_cookie != host->next_data.cookie) {
dev_err(sdmmc_dev(host),
"error: invalid cookie data[%d] host[%d]\n",
data->host_cookie, host->next_data.cookie);
data->host_cookie = 0;
}
if (next || (!next && data->host_cookie != host->next_data.cookie))
sg_count = rtsx_pci_dma_map_sg(pcr,
data->sg, data->sg_len, read);
else
sg_count = host->next_data.sg_count;
if (next) {
next->sg_count = sg_count;
if (++next->cookie < 0)
next->cookie = 1;
data->host_cookie = next->cookie;
}
return sg_count;
}
static void sdmmc_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
bool is_first_req)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
struct mmc_data *data = mrq->data;
if (data->host_cookie) {
dev_err(sdmmc_dev(host),
"error: descard already cookie data[%d]\n",
data->host_cookie);
data->host_cookie = 0;
}
dev_dbg(sdmmc_dev(host), "dma sg prepared: %d\n",
sd_pre_dma_transfer(host, data, &host->next_data));
}
static void sdmmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
int err)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
struct rtsx_pcr *pcr = host->pcr;
struct mmc_data *data = mrq->data;
int read = data->flags & MMC_DATA_READ;
rtsx_pci_dma_unmap_sg(pcr, data->sg, data->sg_len, read);
data->host_cookie = 0;
}
static int sd_start_multi_rw(struct realtek_pci_sdmmc *host,
struct mmc_request *mrq)
{
struct rtsx_pcr *pcr = host->pcr;
struct mmc_host *mmc = host->mmc;
struct mmc_card *card = mmc->card;
struct mmc_data *data = mrq->data;
int uhs = mmc_card_uhs(card);
int read = (data->flags & MMC_DATA_READ) ? 1 : 0;
int read = data->flags & MMC_DATA_READ;
u8 cfg2, trans_mode;
int err;
size_t data_len = data->blksz * data->blocks;
if (host->data)
dev_err(sdmmc_dev(host), "error: data already exist\n");
host->data = data;
if (read) {
cfg2 = SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_0;
......@@ -420,17 +635,56 @@ static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq)
rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
SD_TRANSFER_END, SD_TRANSFER_END);
mod_timer(&host->timer, jiffies + 10 * HZ);
rtsx_pci_send_cmd_no_wait(pcr);
err = rtsx_pci_transfer_data(pcr, data->sg, data->sg_len, read, 10000);
err = rtsx_pci_dma_transfer(pcr, data->sg, host->sg_count, read);
if (err < 0) {
sd_clear_error(host);
return err;
data->error = err;
tasklet_schedule(&host->finish_tasklet);
}
return 0;
}
static void sd_finish_multi_rw(unsigned long host_addr)
{
struct realtek_pci_sdmmc *host = (struct realtek_pci_sdmmc *)host_addr;
struct rtsx_pcr *pcr = host->pcr;
struct mmc_data *data;
int err = 0;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (!host->data) {
dev_err(sdmmc_dev(host), "error: no data exist\n");
goto out;
}
data = host->data;
host->data = NULL;
if (pcr->trans_result == TRANS_NO_DEVICE)
err = -ENODEV;
else if (pcr->trans_result != TRANS_RESULT_OK)
err = -EINVAL;
if (err < 0) {
data->error = err;
goto out;
}
if (!host->mrq->sbc && data->stop) {
sd_send_cmd(host, data->stop);
spin_unlock_irqrestore(&host->lock, flags);
return;
}
out:
tasklet_schedule(&host->finish_tasklet);
spin_unlock_irqrestore(&host->lock, flags);
}
static inline void sd_enable_initial_mode(struct realtek_pci_sdmmc *host)
{
rtsx_pci_write_register(host->pcr, SD_CFG1,
......@@ -511,85 +765,47 @@ static int sd_change_phase(struct realtek_pci_sdmmc *host,
return 0;
}
static u8 sd_search_final_phase(struct realtek_pci_sdmmc *host, u32 phase_map)
static inline u32 test_phase_bit(u32 phase_map, unsigned int bit)
{
struct timing_phase_path path[MAX_PHASE + 1];
int i, j, cont_path_cnt;
int new_block, max_len, final_path_idx;
u8 final_phase = 0xFF;
bit %= RTSX_PHASE_MAX;
return phase_map & (1 << bit);
}
/* Parse phase_map, take it as a bit-ring */
cont_path_cnt = 0;
new_block = 1;
j = 0;
for (i = 0; i < MAX_PHASE + 1; i++) {
if (phase_map & (1 << i)) {
if (new_block) {
new_block = 0;
j = cont_path_cnt++;
path[j].start = i;
path[j].end = i;
} else {
path[j].end = i;
}
} else {
new_block = 1;
if (cont_path_cnt) {
/* Calculate path length and middle point */
int idx = cont_path_cnt - 1;
path[idx].len =
path[idx].end - path[idx].start + 1;
path[idx].mid =
path[idx].start + path[idx].len / 2;
}
}
}
static int sd_get_phase_len(u32 phase_map, unsigned int start_bit)
{
int i;
if (cont_path_cnt == 0) {
dev_dbg(sdmmc_dev(host), "No continuous phase path\n");
goto finish;
} else {
/* Calculate last continuous path length and middle point */
int idx = cont_path_cnt - 1;
path[idx].len = path[idx].end - path[idx].start + 1;
path[idx].mid = path[idx].start + path[idx].len / 2;
for (i = 0; i < RTSX_PHASE_MAX; i++) {
if (test_phase_bit(phase_map, start_bit + i) == 0)
return i;
}
return RTSX_PHASE_MAX;
}
static u8 sd_search_final_phase(struct realtek_pci_sdmmc *host, u32 phase_map)
{
int start = 0, len = 0;
int start_final = 0, len_final = 0;
u8 final_phase = 0xFF;
/* Connect the first and last continuous paths if they are adjacent */
if (!path[0].start && (path[cont_path_cnt - 1].end == MAX_PHASE)) {
/* Using negative index */
path[0].start = path[cont_path_cnt - 1].start - MAX_PHASE - 1;
path[0].len += path[cont_path_cnt - 1].len;
path[0].mid = path[0].start + path[0].len / 2;
/* Convert negative middle point index to positive one */
if (path[0].mid < 0)
path[0].mid += MAX_PHASE + 1;
cont_path_cnt--;
if (phase_map == 0) {
dev_err(sdmmc_dev(host), "phase error: [map:%x]\n", phase_map);
return final_phase;
}
/* Choose the longest continuous phase path */
max_len = 0;
final_phase = 0;
final_path_idx = 0;
for (i = 0; i < cont_path_cnt; i++) {
if (path[i].len > max_len) {
max_len = path[i].len;
final_phase = (u8)path[i].mid;
final_path_idx = i;
while (start < RTSX_PHASE_MAX) {
len = sd_get_phase_len(phase_map, start);
if (len_final < len) {
start_final = start;
len_final = len;
}
dev_dbg(sdmmc_dev(host), "path[%d].start = %d\n",
i, path[i].start);
dev_dbg(sdmmc_dev(host), "path[%d].end = %d\n",
i, path[i].end);
dev_dbg(sdmmc_dev(host), "path[%d].len = %d\n",
i, path[i].len);
dev_dbg(sdmmc_dev(host), "path[%d].mid = %d\n",
i, path[i].mid);
start += len ? len : 1;
}
finish:
dev_dbg(sdmmc_dev(host), "Final chosen phase: %d\n", final_phase);
final_phase = (start_final + len_final / 2) % RTSX_PHASE_MAX;
dev_dbg(sdmmc_dev(host), "phase: [map:%x] [maxlen:%d] [final:%d]\n",
phase_map, len_final, final_phase);
return final_phase;
}
......@@ -635,7 +851,7 @@ static int sd_tuning_phase(struct realtek_pci_sdmmc *host,
int err, i;
u32 raw_phase_map = 0;
for (i = MAX_PHASE; i >= 0; i--) {
for (i = 0; i < RTSX_PHASE_MAX; i++) {
err = sd_tuning_rx_cmd(host, opcode, (u8)i);
if (err == 0)
raw_phase_map |= 1 << i;
......@@ -685,6 +901,13 @@ static int sd_tuning_rx(struct realtek_pci_sdmmc *host, u8 opcode)
return 0;
}
static inline bool sd_use_muti_rw(struct mmc_command *cmd)
{
return mmc_op_multi(cmd->opcode) ||
(cmd->opcode == MMC_READ_SINGLE_BLOCK) ||
(cmd->opcode == MMC_WRITE_BLOCK);
}
static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
......@@ -693,6 +916,14 @@ static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
struct mmc_data *data = mrq->data;
unsigned int data_size = 0;
int err;
unsigned long flags;
mutex_lock(&pcr->pcr_mutex);
spin_lock_irqsave(&host->lock, flags);
if (host->mrq)
dev_err(sdmmc_dev(host), "error: request already exist\n");
host->mrq = mrq;
if (host->eject) {
cmd->error = -ENOMEDIUM;
......@@ -705,8 +936,6 @@ static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
goto finish;
}
mutex_lock(&pcr->pcr_mutex);
rtsx_pci_start_run(pcr);
rtsx_pci_switch_clock(pcr, host->clock, host->ssc_depth,
......@@ -715,46 +944,28 @@ static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
rtsx_pci_write_register(pcr, CARD_SHARE_MODE,
CARD_SHARE_MASK, CARD_SHARE_48_SD);
mutex_lock(&host->host_mutex);
host->mrq = mrq;
mutex_unlock(&host->host_mutex);
if (mrq->data)
data_size = data->blocks * data->blksz;
if (!data_size || mmc_op_multi(cmd->opcode) ||
(cmd->opcode == MMC_READ_SINGLE_BLOCK) ||
(cmd->opcode == MMC_WRITE_BLOCK)) {
sd_send_cmd_get_rsp(host, cmd);
if (!cmd->error && data_size) {
sd_rw_multi(host, mrq);
if (sd_use_muti_rw(cmd))
host->sg_count = sd_pre_dma_transfer(host, data, NULL);
if (mmc_op_multi(cmd->opcode) && mrq->stop)
sd_send_cmd_get_rsp(host, mrq->stop);
}
if (!data_size || sd_use_muti_rw(cmd)) {
if (mrq->sbc)
sd_send_cmd(host, mrq->sbc);
else
sd_send_cmd(host, cmd);
spin_unlock_irqrestore(&host->lock, flags);
} else {
spin_unlock_irqrestore(&host->lock, flags);
sd_normal_rw(host, mrq);
tasklet_schedule(&host->finish_tasklet);
}
if (mrq->data) {
if (cmd->error || data->error)
data->bytes_xfered = 0;
else
data->bytes_xfered = data->blocks * data->blksz;
}
mutex_unlock(&pcr->pcr_mutex);
return;
finish:
if (cmd->error)
dev_dbg(sdmmc_dev(host), "cmd->error = %d\n", cmd->error);
mutex_lock(&host->host_mutex);
host->mrq = NULL;
mutex_unlock(&host->host_mutex);
mmc_request_done(mmc, mrq);
tasklet_schedule(&host->finish_tasklet);
spin_unlock_irqrestore(&host->lock, flags);
}
static int sd_set_bus_width(struct realtek_pci_sdmmc *host,
......@@ -1189,6 +1400,8 @@ static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
}
static const struct mmc_host_ops realtek_pci_sdmmc_ops = {
.pre_req = sdmmc_pre_req,
.post_req = sdmmc_post_req,
.request = sdmmc_request,
.set_ios = sdmmc_set_ios,
.get_ro = sdmmc_get_ro,
......@@ -1252,6 +1465,7 @@ static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev)
struct realtek_pci_sdmmc *host;
struct rtsx_pcr *pcr;
struct pcr_handle *handle = pdev->dev.platform_data;
unsigned long host_addr;
if (!handle)
return -ENXIO;
......@@ -1275,8 +1489,15 @@ static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev)
pcr->slots[RTSX_SD_CARD].p_dev = pdev;
pcr->slots[RTSX_SD_CARD].card_event = rtsx_pci_sdmmc_card_event;
mutex_init(&host->host_mutex);
host_addr = (unsigned long)host;
host->next_data.cookie = 1;
setup_timer(&host->timer, sd_request_timeout, host_addr);
tasklet_init(&host->cmd_tasklet, sd_get_rsp, host_addr);
tasklet_init(&host->data_tasklet, sd_finish_multi_rw, host_addr);
tasklet_init(&host->finish_tasklet, sd_finish_request, host_addr);
spin_lock_init(&host->lock);
pcr->slots[RTSX_SD_CARD].done_transfer = sd_isr_done_transfer;
realtek_init_host(host);
mmc_add_host(mmc);
......@@ -1289,6 +1510,8 @@ static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev);
struct rtsx_pcr *pcr;
struct mmc_host *mmc;
struct mmc_request *mrq;
unsigned long flags;
if (!host)
return 0;
......@@ -1296,25 +1519,37 @@ static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
pcr = host->pcr;
pcr->slots[RTSX_SD_CARD].p_dev = NULL;
pcr->slots[RTSX_SD_CARD].card_event = NULL;
pcr->slots[RTSX_SD_CARD].done_transfer = NULL;
mmc = host->mmc;
host->eject = true;
mrq = host->mrq;
mutex_lock(&host->host_mutex);
spin_lock_irqsave(&host->lock, flags);
if (host->mrq) {
dev_dbg(&(pdev->dev),
"%s: Controller removed during transfer\n",
mmc_hostname(mmc));
rtsx_pci_complete_unfinished_transfer(pcr);
if (mrq->sbc)
mrq->sbc->error = -ENOMEDIUM;
if (mrq->cmd)
mrq->cmd->error = -ENOMEDIUM;
if (mrq->stop)
mrq->stop->error = -ENOMEDIUM;
if (mrq->data)
mrq->data->error = -ENOMEDIUM;
host->mrq->cmd->error = -ENOMEDIUM;
if (host->mrq->stop)
host->mrq->stop->error = -ENOMEDIUM;
mmc_request_done(mmc, host->mrq);
tasklet_schedule(&host->finish_tasklet);
}
mutex_unlock(&host->host_mutex);
spin_unlock_irqrestore(&host->lock, flags);
del_timer_sync(&host->timer);
tasklet_kill(&host->cmd_tasklet);
tasklet_kill(&host->data_tasklet);
tasklet_kill(&host->finish_tasklet);
mmc_remove_host(mmc);
host->eject = true;
mmc_free_host(mmc);
dev_dbg(&(pdev->dev),
......
drivers/mmc/host/sdhci-acpi.c
浏览文件 @ 97e18dc0
......@@ -31,7 +31,6 @@
#include <linux/bitops.h>
#include <linux/types.h>
#include <linux/err.h>
#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/acpi.h>
#include <linux/pm.h>
......@@ -40,13 +39,15 @@
#include <linux/mmc/host.h>
#include <linux/mmc/pm.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/mmc/sdhci.h>
#include "sdhci.h"
enum {
SDHCI_ACPI_SD_CD = BIT(0),
SDHCI_ACPI_RUNTIME_PM = BIT(1),
SDHCI_ACPI_SD_CD = BIT(0),
SDHCI_ACPI_RUNTIME_PM = BIT(1),
SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL = BIT(2),
};
struct sdhci_acpi_chip {
......@@ -121,6 +122,7 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = {
};
static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
.quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION,
.quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
.caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD,
.flags = SDHCI_ACPI_RUNTIME_PM,
......@@ -128,7 +130,8 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
};
static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = {
.flags = SDHCI_ACPI_SD_CD | SDHCI_ACPI_RUNTIME_PM,
.flags = SDHCI_ACPI_SD_CD | SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL |
SDHCI_ACPI_RUNTIME_PM,
.quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON,
};
......@@ -141,6 +144,7 @@ struct sdhci_acpi_uid_slot {
static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = {
{ "80860F14" , "1" , &sdhci_acpi_slot_int_emmc },
{ "80860F14" , "3" , &sdhci_acpi_slot_int_sd },
{ "80860F16" , NULL, &sdhci_acpi_slot_int_sd },
{ "INT33BB" , "2" , &sdhci_acpi_slot_int_sdio },
{ "INT33C6" , NULL, &sdhci_acpi_slot_int_sdio },
{ "INT3436" , NULL, &sdhci_acpi_slot_int_sdio },
......@@ -150,6 +154,7 @@ static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = {
static const struct acpi_device_id sdhci_acpi_ids[] = {
{ "80860F14" },
{ "80860F16" },
{ "INT33BB" },
{ "INT33C6" },
{ "INT3436" },
......@@ -192,59 +197,6 @@ static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(acpi_handle handle,
return slot;
}
#ifdef CONFIG_PM_RUNTIME
static irqreturn_t sdhci_acpi_sd_cd(int irq, void *dev_id)
{
mmc_detect_change(dev_id, msecs_to_jiffies(200));
return IRQ_HANDLED;
}
static int sdhci_acpi_add_own_cd(struct device *dev, struct mmc_host *mmc)
{
struct gpio_desc *desc;
unsigned long flags;
int err, irq;
desc = devm_gpiod_get_index(dev, "sd_cd", 0);
if (IS_ERR(desc)) {
err = PTR_ERR(desc);
goto out;
}
err = gpiod_direction_input(desc);
if (err)
goto out_free;
irq = gpiod_to_irq(desc);
if (irq < 0) {
err = irq;
goto out_free;
}
flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
err = devm_request_irq(dev, irq, sdhci_acpi_sd_cd, flags, "sd_cd", mmc);
if (err)
goto out_free;
return 0;
out_free:
devm_gpiod_put(dev, desc);
out:
dev_warn(dev, "failed to setup card detect wake up\n");
return err;
}
#else
static int sdhci_acpi_add_own_cd(struct device *dev, struct mmc_host *mmc)
{
return 0;
}
#endif
static int sdhci_acpi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
......@@ -332,15 +284,19 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
err = sdhci_add_host(host);
if (err)
goto err_free;
if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) {
if (sdhci_acpi_add_own_cd(dev, host->mmc))
bool v = sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL);
if (mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0)) {
dev_warn(dev, "failed to setup card detect gpio\n");
c->use_runtime_pm = false;
}
}
err = sdhci_add_host(host);
if (err)
goto err_free;
if (c->use_runtime_pm) {
pm_runtime_set_active(dev);
pm_suspend_ignore_children(dev, 1);
......
drivers/mmc/host/sdhci-bcm-kona.c
浏览文件 @ 97e18dc0
......@@ -54,6 +54,7 @@
struct sdhci_bcm_kona_dev {
struct mutex write_lock; /* protect back to back writes */
struct clk *external_clk;
};
......@@ -257,6 +258,24 @@ static int sdhci_bcm_kona_probe(struct platform_device *pdev)
goto err_pltfm_free;
}
/* Get and enable the external clock */
kona_dev->external_clk = devm_clk_get(dev, NULL);
if (IS_ERR(kona_dev->external_clk)) {
dev_err(dev, "Failed to get external clock\n");
ret = PTR_ERR(kona_dev->external_clk);
goto err_pltfm_free;
}
if (clk_set_rate(kona_dev->external_clk, host->mmc->f_max) != 0) {
dev_err(dev, "Failed to set rate external clock\n");
goto err_pltfm_free;
}
if (clk_prepare_enable(kona_dev->external_clk) != 0) {
dev_err(dev, "Failed to enable external clock\n");
goto err_pltfm_free;
}
dev_dbg(dev, "non-removable=%c\n",
(host->mmc->caps & MMC_CAP_NONREMOVABLE) ? 'Y' : 'N');
dev_dbg(dev, "cd_gpio %c, wp_gpio %c\n",
......@@ -271,7 +290,7 @@ static int sdhci_bcm_kona_probe(struct platform_device *pdev)
ret = sdhci_bcm_kona_sd_reset(host);
if (ret)
goto err_pltfm_free;
goto err_clk_disable;
sdhci_bcm_kona_sd_init(host);
......@@ -307,6 +326,9 @@ static int sdhci_bcm_kona_probe(struct platform_device *pdev)
err_reset:
sdhci_bcm_kona_sd_reset(host);
err_clk_disable:
clk_disable_unprepare(kona_dev->external_clk);
err_pltfm_free:
sdhci_pltfm_free(pdev);
......@@ -314,9 +336,20 @@ static int sdhci_bcm_kona_probe(struct platform_device *pdev)
return ret;
}
static int __exit sdhci_bcm_kona_remove(struct platform_device *pdev)
static int sdhci_bcm_kona_remove(struct platform_device *pdev)
{
return sdhci_pltfm_unregister(pdev);
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_pltfm_host *pltfm_priv = sdhci_priv(host);
struct sdhci_bcm_kona_dev *kona_dev = sdhci_pltfm_priv(pltfm_priv);
int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
sdhci_remove_host(host, dead);
clk_disable_unprepare(kona_dev->external_clk);
sdhci_pltfm_free(pdev);
return 0;
}
static struct platform_driver sdhci_bcm_kona_driver = {
......
drivers/mmc/host/sdhci-dove.c
浏览文件 @ 97e18dc0
......@@ -208,7 +208,7 @@ static struct platform_driver sdhci_dove_driver = {
.name = "sdhci-dove",
.owner = THIS_MODULE,
.pm = SDHCI_PLTFM_PMOPS,
.of_match_table = of_match_ptr(sdhci_dove_of_match_table),
.of_match_table = sdhci_dove_of_match_table,
},
.probe = sdhci_dove_probe,
.remove = sdhci_dove_remove,
......
drivers/mmc/host/sdhci-msm.c 0 → 100644
浏览文件 @ 97e18dc0
/*
* drivers/mmc/host/sdhci-msm.c - Qualcomm SDHCI Platform driver
*
* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/regulator/consumer.h>
#include <linux/delay.h>
#include <linux/mmc/mmc.h>
#include <linux/slab.h>
#include "sdhci-pltfm.h"
#define CORE_HC_MODE 0x78
#define HC_MODE_EN 0x1
#define CORE_POWER 0x0
#define CORE_SW_RST BIT(7)
#define MAX_PHASES 16
#define CORE_DLL_LOCK BIT(7)
#define CORE_DLL_EN BIT(16)
#define CORE_CDR_EN BIT(17)
#define CORE_CK_OUT_EN BIT(18)
#define CORE_CDR_EXT_EN BIT(19)
#define CORE_DLL_PDN BIT(29)
#define CORE_DLL_RST BIT(30)
#define CORE_DLL_CONFIG 0x100
#define CORE_DLL_STATUS 0x108
#define CORE_VENDOR_SPEC 0x10c
#define CORE_CLK_PWRSAVE BIT(1)
#define CDR_SELEXT_SHIFT 20
#define CDR_SELEXT_MASK (0xf << CDR_SELEXT_SHIFT)
#define CMUX_SHIFT_PHASE_SHIFT 24
#define CMUX_SHIFT_PHASE_MASK (7 << CMUX_SHIFT_PHASE_SHIFT)
static const u32 tuning_block_64[] = {
0x00ff0fff, 0xccc3ccff, 0xffcc3cc3, 0xeffefffe,
0xddffdfff, 0xfbfffbff, 0xff7fffbf, 0xefbdf777,
0xf0fff0ff, 0x3cccfc0f, 0xcfcc33cc, 0xeeffefff,
0xfdfffdff, 0xffbfffdf, 0xfff7ffbb, 0xde7b7ff7
};
static const u32 tuning_block_128[] = {
0xff00ffff, 0x0000ffff, 0xccccffff, 0xcccc33cc,
0xcc3333cc, 0xffffcccc, 0xffffeeff, 0xffeeeeff,
0xffddffff, 0xddddffff, 0xbbffffff, 0xbbffffff,
0xffffffbb, 0xffffff77, 0x77ff7777, 0xffeeddbb,
0x00ffffff, 0x00ffffff, 0xccffff00, 0xcc33cccc,
0x3333cccc, 0xffcccccc, 0xffeeffff, 0xeeeeffff,
0xddffffff, 0xddffffff, 0xffffffdd, 0xffffffbb,
0xffffbbbb, 0xffff77ff, 0xff7777ff, 0xeeddbb77
};
struct sdhci_msm_host {
struct platform_device *pdev;
void __iomem *core_mem; /* MSM SDCC mapped address */
struct clk *clk; /* main SD/MMC bus clock */
struct clk *pclk; /* SDHC peripheral bus clock */
struct clk *bus_clk; /* SDHC bus voter clock */
struct mmc_host *mmc;
struct sdhci_pltfm_data sdhci_msm_pdata;
};
/* Platform specific tuning */
static inline int msm_dll_poll_ck_out_en(struct sdhci_host *host, u8 poll)
{
u32 wait_cnt = 50;
u8 ck_out_en;
struct mmc_host *mmc = host->mmc;
/* Poll for CK_OUT_EN bit. max. poll time = 50us */
ck_out_en = !!(readl_relaxed(host->ioaddr + CORE_DLL_CONFIG) &
CORE_CK_OUT_EN);
while (ck_out_en != poll) {
if (--wait_cnt == 0) {
dev_err(mmc_dev(mmc), "%s: CK_OUT_EN bit is not %d\n",
mmc_hostname(mmc), poll);
return -ETIMEDOUT;
}
udelay(1);
ck_out_en = !!(readl_relaxed(host->ioaddr + CORE_DLL_CONFIG) &
CORE_CK_OUT_EN);
}
return 0;
}
static int msm_config_cm_dll_phase(struct sdhci_host *host, u8 phase)
{
int rc;
static const u8 grey_coded_phase_table[] = {
0x0, 0x1, 0x3, 0x2, 0x6, 0x7, 0x5, 0x4,
0xc, 0xd, 0xf, 0xe, 0xa, 0xb, 0x9, 0x8
};
unsigned long flags;
u32 config;
struct mmc_host *mmc = host->mmc;
spin_lock_irqsave(&host->lock, flags);
config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
config &= ~(CORE_CDR_EN | CORE_CK_OUT_EN);
config |= (CORE_CDR_EXT_EN | CORE_DLL_EN);
writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
/* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '0' */
rc = msm_dll_poll_ck_out_en(host, 0);
if (rc)
goto err_out;
/*
* Write the selected DLL clock output phase (0 ... 15)
* to CDR_SELEXT bit field of DLL_CONFIG register.
*/
config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
config &= ~CDR_SELEXT_MASK;
config |= grey_coded_phase_table[phase] << CDR_SELEXT_SHIFT;
writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
/* Set CK_OUT_EN bit of DLL_CONFIG register to 1. */
writel_relaxed((readl_relaxed(host->ioaddr + CORE_DLL_CONFIG)
| CORE_CK_OUT_EN), host->ioaddr + CORE_DLL_CONFIG);
/* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '1' */
rc = msm_dll_poll_ck_out_en(host, 1);
if (rc)
goto err_out;
config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
config |= CORE_CDR_EN;
config &= ~CORE_CDR_EXT_EN;
writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
goto out;
err_out:
dev_err(mmc_dev(mmc), "%s: Failed to set DLL phase: %d\n",
mmc_hostname(mmc), phase);
out:
spin_unlock_irqrestore(&host->lock, flags);
return rc;
}
/*
* Find out the greatest range of consecuitive selected
* DLL clock output phases that can be used as sampling
* setting for SD3.0 UHS-I card read operation (in SDR104
* timing mode) or for eMMC4.5 card read operation (in HS200
* timing mode).
* Select the 3/4 of the range and configure the DLL with the
* selected DLL clock output phase.
*/
static int msm_find_most_appropriate_phase(struct sdhci_host *host,
u8 *phase_table, u8 total_phases)
{
int ret;
u8 ranges[MAX_PHASES][MAX_PHASES] = { {0}, {0} };
u8 phases_per_row[MAX_PHASES] = { 0 };
int row_index = 0, col_index = 0, selected_row_index = 0, curr_max = 0;
int i, cnt, phase_0_raw_index = 0, phase_15_raw_index = 0;
bool phase_0_found = false, phase_15_found = false;
struct mmc_host *mmc = host->mmc;
if (!total_phases || (total_phases > MAX_PHASES)) {
dev_err(mmc_dev(mmc), "%s: Invalid argument: total_phases=%d\n",
mmc_hostname(mmc), total_phases);
return -EINVAL;
}
for (cnt = 0; cnt < total_phases; cnt++) {
ranges[row_index][col_index] = phase_table[cnt];
phases_per_row[row_index] += 1;
col_index++;
if ((cnt + 1) == total_phases) {
continue;
/* check if next phase in phase_table is consecutive or not */
} else if ((phase_table[cnt] + 1) != phase_table[cnt + 1]) {
row_index++;
col_index = 0;
}
}
if (row_index >= MAX_PHASES)
return -EINVAL;
/* Check if phase-0 is present in first valid window? */
if (!ranges[0][0]) {
phase_0_found = true;
phase_0_raw_index = 0;
/* Check if cycle exist between 2 valid windows */
for (cnt = 1; cnt <= row_index; cnt++) {
if (phases_per_row[cnt]) {
for (i = 0; i < phases_per_row[cnt]; i++) {
if (ranges[cnt][i] == 15) {
phase_15_found = true;
phase_15_raw_index = cnt;
break;
}
}
}
}
}
/* If 2 valid windows form cycle then merge them as single window */
if (phase_0_found && phase_15_found) {
/* number of phases in raw where phase 0 is present */
u8 phases_0 = phases_per_row[phase_0_raw_index];
/* number of phases in raw where phase 15 is present */
u8 phases_15 = phases_per_row[phase_15_raw_index];
if (phases_0 + phases_15 >= MAX_PHASES)
/*
* If there are more than 1 phase windows then total
* number of phases in both the windows should not be
* more than or equal to MAX_PHASES.
*/
return -EINVAL;
/* Merge 2 cyclic windows */
i = phases_15;
for (cnt = 0; cnt < phases_0; cnt++) {
ranges[phase_15_raw_index][i] =
ranges[phase_0_raw_index][cnt];
if (++i >= MAX_PHASES)
break;
}
phases_per_row[phase_0_raw_index] = 0;
phases_per_row[phase_15_raw_index] = phases_15 + phases_0;
}
for (cnt = 0; cnt <= row_index; cnt++) {
if (phases_per_row[cnt] > curr_max) {
curr_max = phases_per_row[cnt];
selected_row_index = cnt;
}
}
i = (curr_max * 3) / 4;
if (i)
i--;
ret = ranges[selected_row_index][i];
if (ret >= MAX_PHASES) {
ret = -EINVAL;
dev_err(mmc_dev(mmc), "%s: Invalid phase selected=%d\n",
mmc_hostname(mmc), ret);
}
return ret;
}
static inline void msm_cm_dll_set_freq(struct sdhci_host *host)
{
u32 mclk_freq = 0, config;
/* Program the MCLK value to MCLK_FREQ bit field */
if (host->clock <= 112000000)
mclk_freq = 0;
else if (host->clock <= 125000000)
mclk_freq = 1;
else if (host->clock <= 137000000)
mclk_freq = 2;
else if (host->clock <= 150000000)
mclk_freq = 3;
else if (host->clock <= 162000000)
mclk_freq = 4;
else if (host->clock <= 175000000)
mclk_freq = 5;
else if (host->clock <= 187000000)
mclk_freq = 6;
else if (host->clock <= 200000000)
mclk_freq = 7;
config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
config &= ~CMUX_SHIFT_PHASE_MASK;
config |= mclk_freq << CMUX_SHIFT_PHASE_SHIFT;
writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
}
/* Initialize the DLL (Programmable Delay Line) */
static int msm_init_cm_dll(struct sdhci_host *host)
{
struct mmc_host *mmc = host->mmc;
int wait_cnt = 50;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
/*
* Make sure that clock is always enabled when DLL
* tuning is in progress. Keeping PWRSAVE ON may
* turn off the clock.
*/
writel_relaxed((readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC)
& ~CORE_CLK_PWRSAVE), host->ioaddr + CORE_VENDOR_SPEC);
/* Write 1 to DLL_RST bit of DLL_CONFIG register */
writel_relaxed((readl_relaxed(host->ioaddr + CORE_DLL_CONFIG)
| CORE_DLL_RST), host->ioaddr + CORE_DLL_CONFIG);
/* Write 1 to DLL_PDN bit of DLL_CONFIG register */
writel_relaxed((readl_relaxed(host->ioaddr + CORE_DLL_CONFIG)
| CORE_DLL_PDN), host->ioaddr + CORE_DLL_CONFIG);
msm_cm_dll_set_freq(host);
/* Write 0 to DLL_RST bit of DLL_CONFIG register */
writel_relaxed((readl_relaxed(host->ioaddr + CORE_DLL_CONFIG)
& ~CORE_DLL_RST), host->ioaddr + CORE_DLL_CONFIG);
/* Write 0 to DLL_PDN bit of DLL_CONFIG register */
writel_relaxed((readl_relaxed(host->ioaddr + CORE_DLL_CONFIG)
& ~CORE_DLL_PDN), host->ioaddr + CORE_DLL_CONFIG);
/* Set DLL_EN bit to 1. */
writel_relaxed((readl_relaxed(host->ioaddr + CORE_DLL_CONFIG)
| CORE_DLL_EN), host->ioaddr + CORE_DLL_CONFIG);
/* Set CK_OUT_EN bit to 1. */
writel_relaxed((readl_relaxed(host->ioaddr + CORE_DLL_CONFIG)
| CORE_CK_OUT_EN), host->ioaddr + CORE_DLL_CONFIG);
/* Wait until DLL_LOCK bit of DLL_STATUS register becomes '1' */
while (!(readl_relaxed(host->ioaddr + CORE_DLL_STATUS) &
CORE_DLL_LOCK)) {
/* max. wait for 50us sec for LOCK bit to be set */
if (--wait_cnt == 0) {
dev_err(mmc_dev(mmc), "%s: DLL failed to LOCK\n",
mmc_hostname(mmc));
spin_unlock_irqrestore(&host->lock, flags);
return -ETIMEDOUT;
}
udelay(1);
}
spin_unlock_irqrestore(&host->lock, flags);
return 0;
}
static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode)
{
int tuning_seq_cnt = 3;
u8 phase, *data_buf, tuned_phases[16], tuned_phase_cnt = 0;
const u32 *tuning_block_pattern = tuning_block_64;
int size = sizeof(tuning_block_64); /* Pattern size in bytes */
int rc;
struct mmc_host *mmc = host->mmc;
struct mmc_ios ios = host->mmc->ios;
/*
* Tuning is required for SDR104, HS200 and HS400 cards and
* if clock frequency is greater than 100MHz in these modes.
*/
if (host->clock <= 100 * 1000 * 1000 ||
!((ios.timing == MMC_TIMING_MMC_HS200) ||
(ios.timing == MMC_TIMING_UHS_SDR104)))
return 0;
if ((opcode == MMC_SEND_TUNING_BLOCK_HS200) &&
(mmc->ios.bus_width == MMC_BUS_WIDTH_8)) {
tuning_block_pattern = tuning_block_128;
size = sizeof(tuning_block_128);
}
data_buf = kmalloc(size, GFP_KERNEL);
if (!data_buf)
return -ENOMEM;
retry:
/* First of all reset the tuning block */
rc = msm_init_cm_dll(host);
if (rc)
goto out;
phase = 0;
do {
struct mmc_command cmd = { 0 };
struct mmc_data data = { 0 };
struct mmc_request mrq = {
.cmd = &cmd,
.data = &data
};
struct scatterlist sg;
/* Set the phase in delay line hw block */
rc = msm_config_cm_dll_phase(host, phase);
if (rc)
goto out;
cmd.opcode = opcode;
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
data.blksz = size;
data.blocks = 1;
data.flags = MMC_DATA_READ;
data.timeout_ns = NSEC_PER_SEC; /* 1 second */
data.sg = &sg;
data.sg_len = 1;
sg_init_one(&sg, data_buf, size);
memset(data_buf, 0, size);
mmc_wait_for_req(mmc, &mrq);
if (!cmd.error && !data.error &&
!memcmp(data_buf, tuning_block_pattern, size)) {
/* Tuning is successful at this tuning point */
tuned_phases[tuned_phase_cnt++] = phase;
dev_dbg(mmc_dev(mmc), "%s: Found good phase = %d\n",
mmc_hostname(mmc), phase);
}
} while (++phase < ARRAY_SIZE(tuned_phases));
if (tuned_phase_cnt) {
rc = msm_find_most_appropriate_phase(host, tuned_phases,
tuned_phase_cnt);
if (rc < 0)
goto out;
else
phase = rc;
/*
* Finally set the selected phase in delay
* line hw block.
*/
rc = msm_config_cm_dll_phase(host, phase);
if (rc)
goto out;
dev_dbg(mmc_dev(mmc), "%s: Setting the tuning phase to %d\n",
mmc_hostname(mmc), phase);
} else {
if (--tuning_seq_cnt)
goto retry;
/* Tuning failed */
dev_dbg(mmc_dev(mmc), "%s: No tuning point found\n",
mmc_hostname(mmc));
rc = -EIO;
}
out:
kfree(data_buf);
return rc;
}
static const struct of_device_id sdhci_msm_dt_match[] = {
{ .compatible = "qcom,sdhci-msm-v4" },
{},
};
MODULE_DEVICE_TABLE(of, sdhci_msm_dt_match);
static struct sdhci_ops sdhci_msm_ops = {
.platform_execute_tuning = sdhci_msm_execute_tuning,
};
static int sdhci_msm_probe(struct platform_device *pdev)
{
struct sdhci_host *host;
struct sdhci_pltfm_host *pltfm_host;
struct sdhci_msm_host *msm_host;
struct resource *core_memres;
int ret;
u16 host_version;
msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL);
if (!msm_host)
return -ENOMEM;
msm_host->sdhci_msm_pdata.ops = &sdhci_msm_ops;
host = sdhci_pltfm_init(pdev, &msm_host->sdhci_msm_pdata, 0);
if (IS_ERR(host))
return PTR_ERR(host);
pltfm_host = sdhci_priv(host);
pltfm_host->priv = msm_host;
msm_host->mmc = host->mmc;
msm_host->pdev = pdev;
ret = mmc_of_parse(host->mmc);
if (ret)
goto pltfm_free;
sdhci_get_of_property(pdev);
/* Setup SDCC bus voter clock. */
msm_host->bus_clk = devm_clk_get(&pdev->dev, "bus");
if (!IS_ERR(msm_host->bus_clk)) {
/* Vote for max. clk rate for max. performance */
ret = clk_set_rate(msm_host->bus_clk, INT_MAX);
if (ret)
goto pltfm_free;
ret = clk_prepare_enable(msm_host->bus_clk);
if (ret)
goto pltfm_free;
}
/* Setup main peripheral bus clock */
msm_host->pclk = devm_clk_get(&pdev->dev, "iface");
if (IS_ERR(msm_host->pclk)) {
ret = PTR_ERR(msm_host->pclk);
dev_err(&pdev->dev, "Perpheral clk setup failed (%d)\n", ret);
goto bus_clk_disable;
}
ret = clk_prepare_enable(msm_host->pclk);
if (ret)
goto bus_clk_disable;
/* Setup SDC MMC clock */
msm_host->clk = devm_clk_get(&pdev->dev, "core");
if (IS_ERR(msm_host->clk)) {
ret = PTR_ERR(msm_host->clk);
dev_err(&pdev->dev, "SDC MMC clk setup failed (%d)\n", ret);
goto pclk_disable;
}
ret = clk_prepare_enable(msm_host->clk);
if (ret)
goto pclk_disable;
core_memres = platform_get_resource(pdev, IORESOURCE_MEM, 1);
msm_host->core_mem = devm_ioremap_resource(&pdev->dev, core_memres);
if (IS_ERR(msm_host->core_mem)) {
dev_err(&pdev->dev, "Failed to remap registers\n");
ret = PTR_ERR(msm_host->core_mem);
goto clk_disable;
}
/* Reset the core and Enable SDHC mode */
writel_relaxed(readl_relaxed(msm_host->core_mem + CORE_POWER) |
CORE_SW_RST, msm_host->core_mem + CORE_POWER);
/* SW reset can take upto 10HCLK + 15MCLK cycles. (min 40us) */
usleep_range(1000, 5000);
if (readl(msm_host->core_mem + CORE_POWER) & CORE_SW_RST) {
dev_err(&pdev->dev, "Stuck in reset\n");
ret = -ETIMEDOUT;
goto clk_disable;
}
/* Set HC_MODE_EN bit in HC_MODE register */
writel_relaxed(HC_MODE_EN, (msm_host->core_mem + CORE_HC_MODE));
host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
host->quirks |= SDHCI_QUIRK_SINGLE_POWER_WRITE;
host_version = readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION));
dev_dbg(&pdev->dev, "Host Version: 0x%x Vendor Version 0x%x\n",
host_version, ((host_version & SDHCI_VENDOR_VER_MASK) >>
SDHCI_VENDOR_VER_SHIFT));
ret = sdhci_add_host(host);
if (ret)
goto clk_disable;
return 0;
clk_disable:
clk_disable_unprepare(msm_host->clk);
pclk_disable:
clk_disable_unprepare(msm_host->pclk);
bus_clk_disable:
if (!IS_ERR(msm_host->bus_clk))
clk_disable_unprepare(msm_host->bus_clk);
pltfm_free:
sdhci_pltfm_free(pdev);
return ret;
}
static int sdhci_msm_remove(struct platform_device *pdev)
{
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_msm_host *msm_host = pltfm_host->priv;
int dead = (readl_relaxed(host->ioaddr + SDHCI_INT_STATUS) ==
0xffffffff);
sdhci_remove_host(host, dead);
sdhci_pltfm_free(pdev);
clk_disable_unprepare(msm_host->clk);
clk_disable_unprepare(msm_host->pclk);
if (!IS_ERR(msm_host->bus_clk))
clk_disable_unprepare(msm_host->bus_clk);
return 0;
}
static struct platform_driver sdhci_msm_driver = {
.probe = sdhci_msm_probe,
.remove = sdhci_msm_remove,
.driver = {
.name = "sdhci_msm",
.owner = THIS_MODULE,
.of_match_table = sdhci_msm_dt_match,
},
};
module_platform_driver(sdhci_msm_driver);
MODULE_DESCRIPTION("Qualcomm Secure Digital Host Controller Interface driver");
MODULE_LICENSE("GPL v2");
drivers/mmc/host/sdhci-pci.c
浏览文件 @ 97e18dc0
......@@ -610,6 +610,18 @@ static const struct sdhci_pci_fixes sdhci_via = {
.probe = via_probe,
};
static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
{
slot->host->mmc->caps2 |= MMC_CAP2_HS200;
return 0;
}
static const struct sdhci_pci_fixes sdhci_rtsx = {
.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
SDHCI_QUIRK2_BROKEN_DDR50,
.probe_slot = rtsx_probe_slot,
};
static const struct pci_device_id pci_ids[] = {
{
.vendor = PCI_VENDOR_ID_RICOH,
......@@ -731,6 +743,14 @@ static const struct pci_device_id pci_ids[] = {
.driver_data = (kernel_ulong_t)&sdhci_via,
},
{
.vendor = PCI_VENDOR_ID_REALTEK,
.device = 0x5250,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = (kernel_ulong_t)&sdhci_rtsx,
},
{
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_MRST_SD0,
......
drivers/mmc/host/sdhci-pxav3.c
浏览文件 @ 97e18dc0
......@@ -34,6 +34,7 @@
#include <linux/of_gpio.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/mbus.h>
#include "sdhci.h"
#include "sdhci-pltfm.h"
......@@ -57,6 +58,60 @@
#define SDCE_MISC_INT (1<<2)
#define SDCE_MISC_INT_EN (1<<1)
/*
* These registers are relative to the second register region, for the
* MBus bridge.
*/
#define SDHCI_WINDOW_CTRL(i) (0x80 + ((i) << 3))
#define SDHCI_WINDOW_BASE(i) (0x84 + ((i) << 3))
#define SDHCI_MAX_WIN_NUM 8
static int mv_conf_mbus_windows(struct platform_device *pdev,
const struct mbus_dram_target_info *dram)
{
int i;
void __iomem *regs;
struct resource *res;
if (!dram) {
dev_err(&pdev->dev, "no mbus dram info\n");
return -EINVAL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res) {
dev_err(&pdev->dev, "cannot get mbus registers\n");
return -EINVAL;
}
regs = ioremap(res->start, resource_size(res));
if (!regs) {
dev_err(&pdev->dev, "cannot map mbus registers\n");
return -ENOMEM;
}
for (i = 0; i < SDHCI_MAX_WIN_NUM; i++) {
writel(0, regs + SDHCI_WINDOW_CTRL(i));
writel(0, regs + SDHCI_WINDOW_BASE(i));
}
for (i = 0; i < dram->num_cs; i++) {
const struct mbus_dram_window *cs = dram->cs + i;
/* Write size, attributes and target id to control register */
writel(((cs->size - 1) & 0xffff0000) |
(cs->mbus_attr << 8) |
(dram->mbus_dram_target_id << 4) | 1,
regs + SDHCI_WINDOW_CTRL(i));
/* Write base address to base register */
writel(cs->base, regs + SDHCI_WINDOW_BASE(i));
}
iounmap(regs);
return 0;
}
static void pxav3_set_private_registers(struct sdhci_host *host, u8 mask)
{
struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
......@@ -187,6 +242,9 @@ static const struct of_device_id sdhci_pxav3_of_match[] = {
{
.compatible = "mrvl,pxav3-mmc",
},
{
.compatible = "marvell,armada-380-sdhci",
},
{},
};
MODULE_DEVICE_TABLE(of, sdhci_pxav3_of_match);
......@@ -219,6 +277,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
struct sdhci_pltfm_host *pltfm_host;
struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
struct device *dev = &pdev->dev;
struct device_node *np = pdev->dev.of_node;
struct sdhci_host *host = NULL;
struct sdhci_pxa *pxa = NULL;
const struct of_device_id *match;
......@@ -235,6 +294,14 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
kfree(pxa);
return PTR_ERR(host);
}
if (of_device_is_compatible(np, "marvell,armada-380-sdhci")) {
ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info());
if (ret < 0)
goto err_mbus_win;
}
pltfm_host = sdhci_priv(host);
pltfm_host->priv = pxa;
......@@ -321,6 +388,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
clk_disable_unprepare(clk);
clk_put(clk);
err_clk_get:
err_mbus_win:
sdhci_pltfm_free(pdev);
kfree(pxa);
return ret;
......
drivers/mmc/host/sdhci-s3c.c
浏览文件 @ 97e18dc0
......@@ -51,12 +51,13 @@ struct sdhci_s3c {
struct platform_device *pdev;
struct resource *ioarea;
struct s3c_sdhci_platdata *pdata;
unsigned int cur_clk;
int cur_clk;
int ext_cd_irq;
int ext_cd_gpio;
struct clk *clk_io;
struct clk *clk_bus[MAX_BUS_CLK];
unsigned long clk_rates[MAX_BUS_CLK];
};
/**
......@@ -76,32 +77,6 @@ static inline struct sdhci_s3c *to_s3c(struct sdhci_host *host)
return sdhci_priv(host);
}
/**
* get_curclk - convert ctrl2 register to clock source number
* @ctrl2: Control2 register value.
*/
static u32 get_curclk(u32 ctrl2)
{
ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK;
ctrl2 >>= S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
return ctrl2;
}
static void sdhci_s3c_check_sclk(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
u32 tmp = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
if (get_curclk(tmp) != ourhost->cur_clk) {
dev_dbg(&ourhost->pdev->dev, "restored ctrl2 clock setting\n");
tmp &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
tmp |= ourhost->cur_clk << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
writel(tmp, host->ioaddr + S3C_SDHCI_CONTROL2);
}
}
/**
* sdhci_s3c_get_max_clk - callback to get maximum clock frequency.
* @host: The SDHCI host instance.
......@@ -111,20 +86,11 @@ static void sdhci_s3c_check_sclk(struct sdhci_host *host)
static unsigned int sdhci_s3c_get_max_clk(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
struct clk *busclk;
unsigned int rate, max;
int clk;
/* note, a reset will reset the clock source */
sdhci_s3c_check_sclk(host);
for (max = 0, clk = 0; clk < MAX_BUS_CLK; clk++) {
busclk = ourhost->clk_bus[clk];
if (!busclk)
continue;
unsigned long rate, max = 0;
int src;
rate = clk_get_rate(busclk);
for (src = 0; src < MAX_BUS_CLK; src++) {
rate = ourhost->clk_rates[src];
if (rate > max)
max = rate;
}
......@@ -144,9 +110,9 @@ static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
{
unsigned long rate;
struct clk *clksrc = ourhost->clk_bus[src];
int div;
int shift;
if (!clksrc)
if (IS_ERR(clksrc))
return UINT_MAX;
/*
......@@ -158,17 +124,24 @@ static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
return wanted - rate;
}
rate = clk_get_rate(clksrc);
rate = ourhost->clk_rates[src];
for (div = 1; div < 256; div *= 2) {
if ((rate / div) <= wanted)
for (shift = 0; shift <= 8; ++shift) {
if ((rate >> shift) <= wanted)
break;
}
if (shift > 8) {
dev_dbg(&ourhost->pdev->dev,
"clk %d: rate %ld, min rate %lu > wanted %u\n",
src, rate, rate / 256, wanted);
return UINT_MAX;
}
dev_dbg(&ourhost->pdev->dev, "clk %d: rate %ld, want %d, got %ld\n",
src, rate, wanted, rate / div);
src, rate, wanted, rate >> shift);
return wanted - (rate / div);
return wanted - (rate >> shift);
}
/**
......@@ -209,20 +182,22 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
struct clk *clk = ourhost->clk_bus[best_src];
clk_prepare_enable(clk);
clk_disable_unprepare(ourhost->clk_bus[ourhost->cur_clk]);
/* turn clock off to card before changing clock source */
writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
if (ourhost->cur_clk >= 0)
clk_disable_unprepare(
ourhost->clk_bus[ourhost->cur_clk]);
ourhost->cur_clk = best_src;
host->max_clk = clk_get_rate(clk);
ctrl = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
ctrl &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
ctrl |= best_src << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL2);
host->max_clk = ourhost->clk_rates[best_src];
}
/* turn clock off to card before changing clock source */
writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
ctrl = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
ctrl &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
ctrl |= best_src << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL2);
/* reprogram default hardware configuration */
writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA,
host->ioaddr + S3C64XX_SDHCI_CONTROL4);
......@@ -254,17 +229,17 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
static unsigned int sdhci_s3c_get_min_clock(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
unsigned int delta, min = UINT_MAX;
unsigned long rate, min = ULONG_MAX;
int src;
for (src = 0; src < MAX_BUS_CLK; src++) {
delta = sdhci_s3c_consider_clock(ourhost, src, 0);
if (delta == UINT_MAX)
rate = ourhost->clk_rates[src] / 256;
if (!rate)
continue;
/* delta is a negative value in this case */
if (-delta < min)
min = -delta;
if (rate < min)
min = rate;
}
return min;
}
......@@ -272,20 +247,44 @@ static unsigned int sdhci_s3c_get_min_clock(struct sdhci_host *host)
static unsigned int sdhci_cmu_get_max_clock(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
unsigned long rate, max = 0;
int src;
return clk_round_rate(ourhost->clk_bus[ourhost->cur_clk], UINT_MAX);
for (src = 0; src < MAX_BUS_CLK; src++) {
struct clk *clk;
clk = ourhost->clk_bus[src];
if (IS_ERR(clk))
continue;
rate = clk_round_rate(clk, ULONG_MAX);
if (rate > max)
max = rate;
}
return max;
}
/* sdhci_cmu_get_min_clock - callback to get minimal supported clock value. */
static unsigned int sdhci_cmu_get_min_clock(struct sdhci_host *host)
{
struct sdhci_s3c *ourhost = to_s3c(host);
unsigned long rate, min = ULONG_MAX;
int src;
/*
* initial clock can be in the frequency range of
* 100KHz-400KHz, so we set it as max value.
*/
return clk_round_rate(ourhost->clk_bus[ourhost->cur_clk], 400000);
for (src = 0; src < MAX_BUS_CLK; src++) {
struct clk *clk;
clk = ourhost->clk_bus[src];
if (IS_ERR(clk))
continue;
rate = clk_round_rate(clk, 0);
if (rate < min)
min = rate;
}
return min;
}
/* sdhci_cmu_set_clock - callback on clock change.*/
......@@ -552,6 +551,7 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
sc->host = host;
sc->pdev = pdev;
sc->pdata = pdata;
sc->cur_clk = -1;
platform_set_drvdata(pdev, host);
......@@ -566,25 +566,18 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
clk_prepare_enable(sc->clk_io);
for (clks = 0, ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
struct clk *clk;
char name[14];
snprintf(name, 14, "mmc_busclk.%d", ptr);
clk = devm_clk_get(dev, name);
if (IS_ERR(clk))
sc->clk_bus[ptr] = devm_clk_get(dev, name);
if (IS_ERR(sc->clk_bus[ptr]))
continue;
clks++;
sc->clk_bus[ptr] = clk;
/*
* save current clock index to know which clock bus
* is used later in overriding functions.
*/
sc->cur_clk = ptr;
sc->clk_rates[ptr] = clk_get_rate(sc->clk_bus[ptr]);
dev_info(dev, "clock source %d: %s (%ld Hz)\n",
ptr, name, clk_get_rate(clk));
ptr, name, sc->clk_rates[ptr]);
}
if (clks == 0) {
......@@ -593,10 +586,6 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
goto err_no_busclks;
}
#ifndef CONFIG_PM_RUNTIME
clk_prepare_enable(sc->clk_bus[sc->cur_clk]);
#endif
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host->ioaddr = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(host->ioaddr)) {
......@@ -709,10 +698,6 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
return 0;
err_req_regs:
#ifndef CONFIG_PM_RUNTIME
clk_disable_unprepare(sc->clk_bus[sc->cur_clk]);
#endif
err_no_busclks:
clk_disable_unprepare(sc->clk_io);
......@@ -743,9 +728,6 @@ static int sdhci_s3c_remove(struct platform_device *pdev)
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_disable(&pdev->dev);
#ifndef CONFIG_PM_RUNTIME
clk_disable_unprepare(sc->clk_bus[sc->cur_clk]);
#endif
clk_disable_unprepare(sc->clk_io);
sdhci_free_host(host);
......@@ -779,7 +761,8 @@ static int sdhci_s3c_runtime_suspend(struct device *dev)
ret = sdhci_runtime_suspend_host(host);
clk_disable_unprepare(ourhost->clk_bus[ourhost->cur_clk]);
if (ourhost->cur_clk >= 0)
clk_disable_unprepare(ourhost->clk_bus[ourhost->cur_clk]);
clk_disable_unprepare(busclk);
return ret;
}
......@@ -792,7 +775,8 @@ static int sdhci_s3c_runtime_resume(struct device *dev)
int ret;
clk_prepare_enable(busclk);
clk_prepare_enable(ourhost->clk_bus[ourhost->cur_clk]);
if (ourhost->cur_clk >= 0)
clk_prepare_enable(ourhost->clk_bus[ourhost->cur_clk]);
ret = sdhci_runtime_resume_host(host);
return ret;
}
......
drivers/mmc/host/sdhci-spear.c
浏览文件 @ 97e18dc0
......@@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdhci-spear.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/io.h>
#include "sdhci.h"
......@@ -40,36 +41,6 @@ static const struct sdhci_ops sdhci_pltfm_ops = {
/* Nothing to do for now. */
};
/* gpio card detection interrupt handler */
static irqreturn_t sdhci_gpio_irq(int irq, void *dev_id)
{
struct platform_device *pdev = dev_id;
struct sdhci_host *host = platform_get_drvdata(pdev);
struct spear_sdhci *sdhci = dev_get_platdata(&pdev->dev);
unsigned long gpio_irq_type;
int val;
val = gpio_get_value(sdhci->data->card_int_gpio);
/* val == 1 -> card removed, val == 0 -> card inserted */
/* if card removed - set irq for low level, else vice versa */
gpio_irq_type = val ? IRQF_TRIGGER_LOW : IRQF_TRIGGER_HIGH;
irq_set_irq_type(irq, gpio_irq_type);
if (sdhci->data->card_power_gpio >= 0) {
if (!sdhci->data->power_always_enb) {
/* if card inserted, give power, otherwise remove it */
val = sdhci->data->power_active_high ? !val : val ;
gpio_set_value(sdhci->data->card_power_gpio, val);
}
}
/* inform sdhci driver about card insertion/removal */
tasklet_schedule(&host->card_tasklet);
return IRQ_HANDLED;
}
#ifdef CONFIG_OF
static struct sdhci_plat_data *sdhci_probe_config_dt(struct platform_device *pdev)
{
......@@ -84,14 +55,12 @@ static struct sdhci_plat_data *sdhci_probe_config_dt(struct platform_device *pde
/* If pdata is required */
if (cd_gpio != -1) {
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata) {
if (!pdata)
dev_err(&pdev->dev, "DT: kzalloc failed\n");
return ERR_PTR(-ENOMEM);
}
else
pdata->card_int_gpio = cd_gpio;
}
pdata->card_int_gpio = cd_gpio;
return pdata;
}
#else
......@@ -107,41 +76,44 @@ static int sdhci_probe(struct platform_device *pdev)
struct sdhci_host *host;
struct resource *iomem;
struct spear_sdhci *sdhci;
struct device *dev;
int ret;
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!iomem) {
ret = -ENOMEM;
dev_dbg(&pdev->dev, "memory resource not defined\n");
dev = pdev->dev.parent ? pdev->dev.parent : &pdev->dev;
host = sdhci_alloc_host(dev, sizeof(*sdhci));
if (IS_ERR(host)) {
ret = PTR_ERR(host);
dev_dbg(&pdev->dev, "cannot allocate memory for sdhci\n");
goto err;
}
if (!devm_request_mem_region(&pdev->dev, iomem->start,
resource_size(iomem), "spear-sdhci")) {
ret = -EBUSY;
dev_dbg(&pdev->dev, "cannot request region\n");
goto err;
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host->ioaddr = devm_ioremap_resource(&pdev->dev, iomem);
if (IS_ERR(host->ioaddr)) {
ret = PTR_ERR(host->ioaddr);
dev_dbg(&pdev->dev, "unable to map iomem: %d\n", ret);
goto err_host;
}
sdhci = devm_kzalloc(&pdev->dev, sizeof(*sdhci), GFP_KERNEL);
if (!sdhci) {
ret = -ENOMEM;
dev_dbg(&pdev->dev, "cannot allocate memory for sdhci\n");
goto err;
}
host->hw_name = "sdhci";
host->ops = &sdhci_pltfm_ops;
host->irq = platform_get_irq(pdev, 0);
host->quirks = SDHCI_QUIRK_BROKEN_ADMA;
sdhci = sdhci_priv(host);
/* clk enable */
sdhci->clk = clk_get(&pdev->dev, NULL);
sdhci->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(sdhci->clk)) {
ret = PTR_ERR(sdhci->clk);
dev_dbg(&pdev->dev, "Error getting clock\n");
goto err;
goto err_host;
}
ret = clk_prepare_enable(sdhci->clk);
if (ret) {
dev_dbg(&pdev->dev, "Error enabling clock\n");
goto put_clk;
goto err_host;
}
ret = clk_set_rate(sdhci->clk, 50000000);
......@@ -153,118 +125,42 @@ static int sdhci_probe(struct platform_device *pdev)
sdhci->data = sdhci_probe_config_dt(pdev);
if (IS_ERR(sdhci->data)) {
dev_err(&pdev->dev, "DT: Failed to get pdata\n");
return -ENODEV;
goto disable_clk;
}
} else {
sdhci->data = dev_get_platdata(&pdev->dev);
}
pdev->dev.platform_data = sdhci;
if (pdev->dev.parent)
host = sdhci_alloc_host(pdev->dev.parent, 0);
else
host = sdhci_alloc_host(&pdev->dev, 0);
if (IS_ERR(host)) {
ret = PTR_ERR(host);
dev_dbg(&pdev->dev, "error allocating host\n");
goto disable_clk;
}
host->hw_name = "sdhci";
host->ops = &sdhci_pltfm_ops;
host->irq = platform_get_irq(pdev, 0);
host->quirks = SDHCI_QUIRK_BROKEN_ADMA;
host->ioaddr = devm_ioremap(&pdev->dev, iomem->start,
resource_size(iomem));
if (!host->ioaddr) {
ret = -ENOMEM;
dev_dbg(&pdev->dev, "failed to remap registers\n");
goto free_host;
/*
* It is optional to use GPIOs for sdhci card detection. If
* sdhci->data is NULL, then use original sdhci lines otherwise
* GPIO lines. We use the built-in GPIO support for this.
*/
if (sdhci->data && sdhci->data->card_int_gpio >= 0) {
ret = mmc_gpio_request_cd(host->mmc,
sdhci->data->card_int_gpio, 0);
if (ret < 0) {
dev_dbg(&pdev->dev,
"failed to request card-detect gpio%d\n",
sdhci->data->card_int_gpio);
goto disable_clk;
}
}
ret = sdhci_add_host(host);
if (ret) {
dev_dbg(&pdev->dev, "error adding host\n");
goto free_host;
goto disable_clk;
}
platform_set_drvdata(pdev, host);
/*
* It is optional to use GPIOs for sdhci Power control & sdhci card
* interrupt detection. If sdhci->data is NULL, then use original sdhci
* lines otherwise GPIO lines.
* If GPIO is selected for power control, then power should be disabled
* after card removal and should be enabled when card insertion
* interrupt occurs
*/
if (!sdhci->data)
return 0;
if (sdhci->data->card_power_gpio >= 0) {
int val = 0;
ret = devm_gpio_request(&pdev->dev,
sdhci->data->card_power_gpio, "sdhci");
if (ret < 0) {
dev_dbg(&pdev->dev, "gpio request fail: %d\n",
sdhci->data->card_power_gpio);
goto set_drvdata;
}
if (sdhci->data->power_always_enb)
val = sdhci->data->power_active_high;
else
val = !sdhci->data->power_active_high;
ret = gpio_direction_output(sdhci->data->card_power_gpio, val);
if (ret) {
dev_dbg(&pdev->dev, "gpio set direction fail: %d\n",
sdhci->data->card_power_gpio);
goto set_drvdata;
}
}
if (sdhci->data->card_int_gpio >= 0) {
ret = devm_gpio_request(&pdev->dev, sdhci->data->card_int_gpio,
"sdhci");
if (ret < 0) {
dev_dbg(&pdev->dev, "gpio request fail: %d\n",
sdhci->data->card_int_gpio);
goto set_drvdata;
}
ret = gpio_direction_input(sdhci->data->card_int_gpio);
if (ret) {
dev_dbg(&pdev->dev, "gpio set direction fail: %d\n",
sdhci->data->card_int_gpio);
goto set_drvdata;
}
ret = devm_request_irq(&pdev->dev,
gpio_to_irq(sdhci->data->card_int_gpio),
sdhci_gpio_irq, IRQF_TRIGGER_LOW,
mmc_hostname(host->mmc), pdev);
if (ret) {
dev_dbg(&pdev->dev, "gpio request irq fail: %d\n",
sdhci->data->card_int_gpio);
goto set_drvdata;
}
}
return 0;
set_drvdata:
sdhci_remove_host(host, 1);
free_host:
sdhci_free_host(host);
disable_clk:
clk_disable_unprepare(sdhci->clk);
put_clk:
clk_put(sdhci->clk);
err_host:
sdhci_free_host(host);
err:
dev_err(&pdev->dev, "spear-sdhci probe failed: %d\n", ret);
return ret;
......@@ -273,7 +169,7 @@ static int sdhci_probe(struct platform_device *pdev)
static int sdhci_remove(struct platform_device *pdev)
{
struct sdhci_host *host = platform_get_drvdata(pdev);
struct spear_sdhci *sdhci = dev_get_platdata(&pdev->dev);
struct spear_sdhci *sdhci = sdhci_priv(host);
int dead = 0;
u32 scratch;
......@@ -282,9 +178,8 @@ static int sdhci_remove(struct platform_device *pdev)
dead = 1;
sdhci_remove_host(host, dead);
sdhci_free_host(host);
clk_disable_unprepare(sdhci->clk);
clk_put(sdhci->clk);
sdhci_free_host(host);
return 0;
}
......@@ -293,7 +188,7 @@ static int sdhci_remove(struct platform_device *pdev)
static int sdhci_suspend(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
struct spear_sdhci *sdhci = dev_get_platdata(dev);
struct spear_sdhci *sdhci = sdhci_priv(host);
int ret;
ret = sdhci_suspend_host(host);
......@@ -306,7 +201,7 @@ static int sdhci_suspend(struct device *dev)
static int sdhci_resume(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
struct spear_sdhci *sdhci = dev_get_platdata(dev);
struct spear_sdhci *sdhci = sdhci_priv(host);
int ret;
ret = clk_enable(sdhci->clk);
......
drivers/mmc/host/sdhci.c
浏览文件 @ 97e18dc0
此差异已折叠。
drivers/mmc/host/sh_mobile_sdhi.c
浏览文件 @ 97e18dc0
此差异已折叠。
drivers/mmc/host/tmio_mmc.c
浏览文件 @ 97e18dc0
此差异已折叠。
drivers/mmc/host/tmio_mmc.h
浏览文件 @ 97e18dc0
......@@ -162,16 +162,15 @@ static inline void tmio_mmc_abort_dma(struct tmio_mmc_host *host)
}
#endif
#ifdef CONFIG_PM
#ifdef CONFIG_PM_SLEEP
int tmio_mmc_host_suspend(struct device *dev);
int tmio_mmc_host_resume(struct device *dev);
#else
#define tmio_mmc_host_suspend NULL
#define tmio_mmc_host_resume NULL
#endif
#ifdef CONFIG_PM_RUNTIME
int tmio_mmc_host_runtime_suspend(struct device *dev);
int tmio_mmc_host_runtime_resume(struct device *dev);
#endif
static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)
{
......
drivers/mmc/host/tmio_mmc_pio.c
浏览文件 @ 97e18dc0
此差异已折叠。
drivers/mmc/host/ushc.c
浏览文件 @ 97e18dc0
......@@ -504,7 +504,7 @@ static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id
ret = -ENOMEM;
goto err;
}
ushc->csw = kzalloc(sizeof(struct ushc_cbw), GFP_KERNEL);
ushc->csw = kzalloc(sizeof(struct ushc_csw), GFP_KERNEL);
if (ushc->csw == NULL) {
ret = -ENOMEM;
goto err;
......
drivers/mmc/host/wmt-sdmmc.c
浏览文件 @ 97e18dc0
......@@ -757,7 +757,7 @@ static int wmt_mci_probe(struct platform_device *pdev)
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *of_id =
of_match_device(wmt_mci_dt_ids, &pdev->dev);
const struct wmt_mci_caps *wmt_caps = of_id->data;
const struct wmt_mci_caps *wmt_caps;
int ret;
int regular_irq, dma_irq;
......@@ -766,6 +766,8 @@ static int wmt_mci_probe(struct platform_device *pdev)
return -EFAULT;
}
wmt_caps = of_id->data;
if (!np) {
dev_err(&pdev->dev, "Missing SDMMC description in devicetree\n");
return -EFAULT;
......
drivers/regulator/Kconfig
浏览文件 @ 97e18dc0
此差异已折叠。
drivers/regulator/Makefile
浏览文件 @ 97e18dc0
此差异已折叠。
drivers/regulator/pbias-regulator.c 0 → 100644
浏览文件 @ 97e18dc0
此差异已折叠。
include/linux/mfd/rtsx_common.h
浏览文件 @ 97e18dc0
此差异已折叠。
include/linux/mfd/rtsx_pci.h
浏览文件 @ 97e18dc0
此差异已折叠。
include/linux/mmc/core.h
浏览文件 @ 97e18dc0
此差异已折叠。
include/linux/mmc/host.h
浏览文件 @ 97e18dc0
此差异已折叠。
include/linux/mmc/sdhci-spear.h
浏览文件 @ 97e18dc0
此差异已折叠。
include/linux/mmc/sdhci.h
浏览文件 @ 97e18dc0
此差异已折叠。
include/linux/mmc/slot-gpio.h
浏览文件 @ 97e18dc0
此差异已折叠。
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