提交 ef1d7526 编写于 作者: Z Zhang Rui

Merge branch 'linus' of...

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into thermal-soc
* DT bindings for Renesas R-Car Gen3 Thermal Sensor driver
On R-Car Gen3 SoCs, the thermal sensor controllers (TSC) control the thermal
sensors (THS) which are the analog circuits for measuring temperature (Tj)
inside the LSI.
Required properties:
- compatible : "renesas,<soctype>-thermal",
Examples with soctypes are:
- "renesas,r8a7795-thermal" (R-Car H3)
- "renesas,r8a7796-thermal" (R-Car M3-W)
- reg : Address ranges of the thermal registers. Each sensor
needs one address range. Sorting must be done in
increasing order according to datasheet, i.e.
TSC1, TSC2, ...
- clocks : Must contain a reference to the functional clock.
- #thermal-sensor-cells : must be <1>.
Optional properties:
- interrupts : interrupts routed to the TSC (3 for H3 and M3-W)
- power-domain : Must contain a reference to the power domain. This
property is mandatory if the thermal sensor instance
is part of a controllable power domain.
Example:
tsc: thermal@e6198000 {
compatible = "renesas,r8a7795-thermal";
reg = <0 0xe6198000 0 0x68>,
<0 0xe61a0000 0 0x5c>,
<0 0xe61a8000 0 0x5c>;
interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 522>;
power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
#thermal-sensor-cells = <1>;
status = "okay";
};
thermal-zones {
sensor_thermal1: sensor-thermal1 {
polling-delay-passive = <250>;
polling-delay = <1000>;
thermal-sensors = <&tsc 0>;
trips {
sensor1_crit: sensor1-crit {
temperature = <90000>;
hysteresis = <2000>;
type = "critical";
};
};
};
};
* ZTE zx2967 family Thermal
Required Properties:
- compatible: should be one of the following.
* zte,zx296718-thermal
- reg: physical base address of the controller and length of memory mapped
region.
- clocks : Pairs of phandle and specifier referencing the controller's clocks.
- clock-names: "topcrm" for the topcrm clock.
"apb" for the apb clock.
- #thermal-sensor-cells: must be 0.
Please note: slope coefficient defined in thermal-zones section need to be
multiplied by 1000.
Example for tempsensor:
tempsensor: tempsensor@148a000 {
compatible = "zte,zx296718-thermal";
reg = <0x0148a000 0x20>;
clocks = <&topcrm TEMPSENSOR_GATE>, <&audiocrm AUDIO_TS_PCLK>;
clock-names = "topcrm", "apb";
#thermal-sensor-cells = <0>;
};
Example for cooling device:
cooling_dev: cooling_dev {
cluster0_cooling_dev: cluster0-cooling-dev {
#cooling-cells = <2>;
cpumask = <0xf>;
capacitance = <1500>;
};
cluster1_cooling_dev: cluster1-cooling-dev {
#cooling-cells = <2>;
cpumask = <0x30>;
capacitance = <2000>;
};
};
Example for thermal zones:
thermal-zones {
zx296718_thermal: zx296718_thermal {
polling-delay-passive = <500>;
polling-delay = <1000>;
sustainable-power = <6500>;
thermal-sensors = <&tempsensor 0>;
/*
* slope need to be multiplied by 1000.
*/
coefficients = <1951 (-922)>;
trips {
trip0: switch_on_temperature {
temperature = <90000>;
hysteresis = <2000>;
type = "passive";
};
trip1: desired_temperature {
temperature = <100000>;
hysteresis = <2000>;
type = "passive";
};
crit: critical_temperature {
temperature = <110000>;
hysteresis = <2000>;
type = "critical";
};
};
cooling-maps {
map0 {
trip = <&trip0>;
cooling-device = <&gpu 2 5>;
};
map1 {
trip = <&trip0>;
cooling-device = <&cluster0_cooling_dev 1 2>;
};
map2 {
trip = <&trip1>;
cooling-device = <&cluster0_cooling_dev 1 2>;
};
map3 {
trip = <&crit>;
cooling-device = <&cluster0_cooling_dev 1 2>;
};
map4 {
trip = <&trip0>;
cooling-device = <&cluster1_cooling_dev 1 2>;
contribution = <9000>;
};
map5 {
trip = <&trip1>;
cooling-device = <&cluster1_cooling_dev 1 2>;
contribution = <4096>;
};
map6 {
trip = <&crit>;
cooling-device = <&cluster1_cooling_dev 1 2>;
contribution = <4096>;
};
};
};
};
......@@ -245,6 +245,15 @@ config RCAR_THERMAL
Enable this to plug the R-Car thermal sensor driver into the Linux
thermal framework.
config RCAR_GEN3_THERMAL
tristate "Renesas R-Car Gen3 thermal driver"
depends on ARCH_RENESAS || COMPILE_TEST
depends on HAS_IOMEM
depends on OF
help
Enable this to plug the R-Car Gen3 thermal sensor driver into the Linux
thermal framework.
config KIRKWOOD_THERMAL
tristate "Temperature sensor on Marvell Kirkwood SoCs"
depends on MACH_KIRKWOOD || COMPILE_TEST
......@@ -436,4 +445,12 @@ depends on (ARCH_QCOM && OF) || COMPILE_TEST
source "drivers/thermal/qcom/Kconfig"
endmenu
config ZX2967_THERMAL
tristate "Thermal sensors on zx2967 SoC"
depends on ARCH_ZX || COMPILE_TEST
help
Enable the zx2967 thermal sensors driver, which supports
the primitive temperature sensor embedded in zx2967 SoCs.
This sensor generates the real time die temperature.
endif
......@@ -31,6 +31,7 @@ obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM) += qcom-spmi-temp-alarm.o
obj-$(CONFIG_SPEAR_THERMAL) += spear_thermal.o
obj-$(CONFIG_ROCKCHIP_THERMAL) += rockchip_thermal.o
obj-$(CONFIG_RCAR_THERMAL) += rcar_thermal.o
obj-$(CONFIG_RCAR_GEN3_THERMAL) += rcar_gen3_thermal.o
obj-$(CONFIG_KIRKWOOD_THERMAL) += kirkwood_thermal.o
obj-y += samsung/
obj-$(CONFIG_DOVE_THERMAL) += dove_thermal.o
......@@ -56,3 +57,4 @@ obj-$(CONFIG_TEGRA_SOCTHERM) += tegra/
obj-$(CONFIG_HISI_THERMAL) += hisi_thermal.o
obj-$(CONFIG_MTK_THERMAL) += mtk_thermal.o
obj-$(CONFIG_GENERIC_ADC_THERMAL) += thermal-generic-adc.o
obj-$(CONFIG_ZX2967_THERMAL) += zx2967_thermal.o
......@@ -489,6 +489,10 @@ static int imx_thermal_probe(struct platform_device *pdev)
data->tempmon = map;
data->socdata = of_device_get_match_data(&pdev->dev);
if (!data->socdata) {
dev_err(&pdev->dev, "no device match found\n");
return -ENODEV;
}
/* make sure the IRQ flag is clear before enabling irq on i.MX6SX */
if (data->socdata->version == TEMPMON_IMX6SX) {
......
......@@ -183,37 +183,37 @@ struct mtk_thermal {
};
/* MT8173 thermal sensor data */
const int mt8173_bank_data[MT8173_NUM_ZONES][3] = {
static const int mt8173_bank_data[MT8173_NUM_ZONES][3] = {
{ MT8173_TS2, MT8173_TS3 },
{ MT8173_TS2, MT8173_TS4 },
{ MT8173_TS1, MT8173_TS2, MT8173_TSABB },
{ MT8173_TS2 },
};
const int mt8173_msr[MT8173_NUM_SENSORS_PER_ZONE] = {
static const int mt8173_msr[MT8173_NUM_SENSORS_PER_ZONE] = {
TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR2
};
const int mt8173_adcpnp[MT8173_NUM_SENSORS_PER_ZONE] = {
static const int mt8173_adcpnp[MT8173_NUM_SENSORS_PER_ZONE] = {
TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2, TEMP_ADCPNP3
};
const int mt8173_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 };
static const int mt8173_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 };
/* MT2701 thermal sensor data */
const int mt2701_bank_data[MT2701_NUM_SENSORS] = {
static const int mt2701_bank_data[MT2701_NUM_SENSORS] = {
MT2701_TS1, MT2701_TS2, MT2701_TSABB
};
const int mt2701_msr[MT2701_NUM_SENSORS_PER_ZONE] = {
static const int mt2701_msr[MT2701_NUM_SENSORS_PER_ZONE] = {
TEMP_MSR0, TEMP_MSR1, TEMP_MSR2
};
const int mt2701_adcpnp[MT2701_NUM_SENSORS_PER_ZONE] = {
static const int mt2701_adcpnp[MT2701_NUM_SENSORS_PER_ZONE] = {
TEMP_ADCPNP0, TEMP_ADCPNP1, TEMP_ADCPNP2
};
const int mt2701_mux_values[MT2701_NUM_SENSORS] = { 0, 1, 16 };
static const int mt2701_mux_values[MT2701_NUM_SENSORS] = { 0, 1, 16 };
/**
* The MT8173 thermal controller has four banks. Each bank can read up to
......
/*
* R-Car Gen3 THS thermal sensor driver
* Based on rcar_thermal.c and work from Hien Dang and Khiem Nguyen.
*
* Copyright (C) 2016 Renesas Electronics Corporation.
* Copyright (C) 2016 Sang Engineering
*
* 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; version 2 of the License.
*
* 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/delay.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/thermal.h>
/* Register offsets */
#define REG_GEN3_IRQSTR 0x04
#define REG_GEN3_IRQMSK 0x08
#define REG_GEN3_IRQCTL 0x0C
#define REG_GEN3_IRQEN 0x10
#define REG_GEN3_IRQTEMP1 0x14
#define REG_GEN3_IRQTEMP2 0x18
#define REG_GEN3_IRQTEMP3 0x1C
#define REG_GEN3_CTSR 0x20
#define REG_GEN3_THCTR 0x20
#define REG_GEN3_TEMP 0x28
#define REG_GEN3_THCODE1 0x50
#define REG_GEN3_THCODE2 0x54
#define REG_GEN3_THCODE3 0x58
/* CTSR bits */
#define CTSR_PONM BIT(8)
#define CTSR_AOUT BIT(7)
#define CTSR_THBGR BIT(5)
#define CTSR_VMEN BIT(4)
#define CTSR_VMST BIT(1)
#define CTSR_THSST BIT(0)
/* THCTR bits */
#define THCTR_PONM BIT(6)
#define THCTR_THSST BIT(0)
#define CTEMP_MASK 0xFFF
#define MCELSIUS(temp) ((temp) * 1000)
#define GEN3_FUSE_MASK 0xFFF
#define TSC_MAX_NUM 3
/* Structure for thermal temperature calculation */
struct equation_coefs {
int a1;
int b1;
int a2;
int b2;
};
struct rcar_gen3_thermal_tsc {
void __iomem *base;
struct thermal_zone_device *zone;
struct equation_coefs coef;
struct mutex lock;
};
struct rcar_gen3_thermal_priv {
struct rcar_gen3_thermal_tsc *tscs[TSC_MAX_NUM];
};
struct rcar_gen3_thermal_data {
void (*thermal_init)(struct rcar_gen3_thermal_tsc *tsc);
};
static inline u32 rcar_gen3_thermal_read(struct rcar_gen3_thermal_tsc *tsc,
u32 reg)
{
return ioread32(tsc->base + reg);
}
static inline void rcar_gen3_thermal_write(struct rcar_gen3_thermal_tsc *tsc,
u32 reg, u32 data)
{
iowrite32(data, tsc->base + reg);
}
/*
* Linear approximation for temperature
*
* [reg] = [temp] * a + b => [temp] = ([reg] - b) / a
*
* The constants a and b are calculated using two triplets of int values PTAT
* and THCODE. PTAT and THCODE can either be read from hardware or use hard
* coded values from driver. The formula to calculate a and b are taken from
* BSP and sparsely documented and understood.
*
* Examining the linear formula and the formula used to calculate constants a
* and b while knowing that the span for PTAT and THCODE values are between
* 0x000 and 0xfff the largest integer possible is 0xfff * 0xfff == 0xffe001.
* Integer also needs to be signed so that leaves 7 bits for binary
* fixed point scaling.
*/
#define FIXPT_SHIFT 7
#define FIXPT_INT(_x) ((_x) << FIXPT_SHIFT)
#define FIXPT_DIV(_a, _b) DIV_ROUND_CLOSEST(((_a) << FIXPT_SHIFT), (_b))
#define FIXPT_TO_MCELSIUS(_x) ((_x) * 1000 >> FIXPT_SHIFT)
#define RCAR3_THERMAL_GRAN 500 /* mili Celsius */
/* no idea where these constants come from */
#define TJ_1 96
#define TJ_3 -41
static void rcar_gen3_thermal_calc_coefs(struct equation_coefs *coef,
int *ptat, int *thcode)
{
int tj_2;
/* TODO: Find documentation and document constant calculation formula */
/*
* Division is not scaled in BSP and if scaled it might overflow
* the dividend (4095 * 4095 << 14 > INT_MAX) so keep it unscaled
*/
tj_2 = (FIXPT_INT((ptat[1] - ptat[2]) * 137)
/ (ptat[0] - ptat[2])) - FIXPT_INT(41);
coef->a1 = FIXPT_DIV(FIXPT_INT(thcode[1] - thcode[2]),
tj_2 - FIXPT_INT(TJ_3));
coef->b1 = FIXPT_INT(thcode[2]) - coef->a1 * TJ_3;
coef->a2 = FIXPT_DIV(FIXPT_INT(thcode[1] - thcode[0]),
tj_2 - FIXPT_INT(TJ_1));
coef->b2 = FIXPT_INT(thcode[0]) - coef->a2 * TJ_1;
}
static int rcar_gen3_thermal_round(int temp)
{
int result, round_offs;
round_offs = temp >= 0 ? RCAR3_THERMAL_GRAN / 2 :
-RCAR3_THERMAL_GRAN / 2;
result = (temp + round_offs) / RCAR3_THERMAL_GRAN;
return result * RCAR3_THERMAL_GRAN;
}
static int rcar_gen3_thermal_get_temp(void *devdata, int *temp)
{
struct rcar_gen3_thermal_tsc *tsc = devdata;
int mcelsius, val1, val2;
u32 reg;
/* Read register and convert to mili Celsius */
mutex_lock(&tsc->lock);
reg = rcar_gen3_thermal_read(tsc, REG_GEN3_TEMP) & CTEMP_MASK;
val1 = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b1, tsc->coef.a1);
val2 = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b2, tsc->coef.a2);
mcelsius = FIXPT_TO_MCELSIUS((val1 + val2) / 2);
mutex_unlock(&tsc->lock);
/* Make sure we are inside specifications */
if ((mcelsius < MCELSIUS(-40)) || (mcelsius > MCELSIUS(125)))
return -EIO;
/* Round value to device granularity setting */
*temp = rcar_gen3_thermal_round(mcelsius);
return 0;
}
static struct thermal_zone_of_device_ops rcar_gen3_tz_of_ops = {
.get_temp = rcar_gen3_thermal_get_temp,
};
static void r8a7795_thermal_init(struct rcar_gen3_thermal_tsc *tsc)
{
rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, CTSR_THBGR);
rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, 0x0);
usleep_range(1000, 2000);
rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, CTSR_PONM);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0x3F);
rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR,
CTSR_PONM | CTSR_AOUT | CTSR_THBGR | CTSR_VMEN);
usleep_range(100, 200);
rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR,
CTSR_PONM | CTSR_AOUT | CTSR_THBGR | CTSR_VMEN |
CTSR_VMST | CTSR_THSST);
usleep_range(1000, 2000);
}
static void r8a7796_thermal_init(struct rcar_gen3_thermal_tsc *tsc)
{
u32 reg_val;
reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR);
reg_val &= ~THCTR_PONM;
rcar_gen3_thermal_write(tsc, REG_GEN3_THCTR, reg_val);
usleep_range(1000, 2000);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0x3F);
reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR);
reg_val |= THCTR_THSST;
rcar_gen3_thermal_write(tsc, REG_GEN3_THCTR, reg_val);
}
static const struct rcar_gen3_thermal_data r8a7795_data = {
.thermal_init = r8a7795_thermal_init,
};
static const struct rcar_gen3_thermal_data r8a7796_data = {
.thermal_init = r8a7796_thermal_init,
};
static const struct of_device_id rcar_gen3_thermal_dt_ids[] = {
{ .compatible = "renesas,r8a7795-thermal", .data = &r8a7795_data},
{ .compatible = "renesas,r8a7796-thermal", .data = &r8a7796_data},
{},
};
MODULE_DEVICE_TABLE(of, rcar_gen3_thermal_dt_ids);
static int rcar_gen3_thermal_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
pm_runtime_put(dev);
pm_runtime_disable(dev);
return 0;
}
static int rcar_gen3_thermal_probe(struct platform_device *pdev)
{
struct rcar_gen3_thermal_priv *priv;
struct device *dev = &pdev->dev;
struct resource *res;
struct thermal_zone_device *zone;
int ret, i;
const struct rcar_gen3_thermal_data *match_data =
of_device_get_match_data(dev);
/* default values if FUSEs are missing */
/* TODO: Read values from hardware on supported platforms */
int ptat[3] = { 2351, 1509, 435 };
int thcode[TSC_MAX_NUM][3] = {
{ 3248, 2800, 2221 },
{ 3245, 2795, 2216 },
{ 3250, 2805, 2237 },
};
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
platform_set_drvdata(pdev, priv);
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
for (i = 0; i < TSC_MAX_NUM; i++) {
struct rcar_gen3_thermal_tsc *tsc;
tsc = devm_kzalloc(dev, sizeof(*tsc), GFP_KERNEL);
if (!tsc) {
ret = -ENOMEM;
goto error_unregister;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
if (!res)
break;
tsc->base = devm_ioremap_resource(dev, res);
if (IS_ERR(tsc->base)) {
ret = PTR_ERR(tsc->base);
goto error_unregister;
}
priv->tscs[i] = tsc;
mutex_init(&tsc->lock);
match_data->thermal_init(tsc);
rcar_gen3_thermal_calc_coefs(&tsc->coef, ptat, thcode[i]);
zone = devm_thermal_zone_of_sensor_register(dev, i, tsc,
&rcar_gen3_tz_of_ops);
if (IS_ERR(zone)) {
dev_err(dev, "Can't register thermal zone\n");
ret = PTR_ERR(zone);
goto error_unregister;
}
tsc->zone = zone;
}
return 0;
error_unregister:
rcar_gen3_thermal_remove(pdev);
return ret;
}
static struct platform_driver rcar_gen3_thermal_driver = {
.driver = {
.name = "rcar_gen3_thermal",
.of_match_table = rcar_gen3_thermal_dt_ids,
},
.probe = rcar_gen3_thermal_probe,
.remove = rcar_gen3_thermal_remove,
};
module_platform_driver(rcar_gen3_thermal_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("R-Car Gen3 THS thermal sensor driver");
MODULE_AUTHOR("Wolfram Sang <wsa+renesas@sang-engineering.com>");
......@@ -1168,7 +1168,6 @@ static int exynos_of_sensor_conf(struct device_node *np,
pdata->default_temp_offset = (u8)value;
of_property_read_u32(np, "samsung,tmu_cal_type", &pdata->cal_type);
of_property_read_u32(np, "samsung,tmu_cal_mode", &pdata->cal_mode);
of_node_put(np);
return 0;
......
......@@ -70,7 +70,6 @@ struct exynos_tmu_platform_data {
enum soc_type type;
u32 cal_type;
u32 cal_mode;
};
#endif /* _EXYNOS_TMU_H */
......@@ -11,7 +11,6 @@ config TI_SOC_THERMAL
config TI_THERMAL
bool "Texas Instruments SoCs thermal framework support"
depends on TI_SOC_THERMAL
depends on CPU_THERMAL
help
If you say yes here you want to get support for generic thermal
framework for the Texas Instruments on die bandgap temperature sensor.
......
......@@ -54,7 +54,6 @@
#define DRA752_STD_FUSE_OPP_BGAP_CORE_OFFSET 0x8
#define DRA752_TEMP_SENSOR_CORE_OFFSET 0x154
#define DRA752_BANDGAP_THRESHOLD_CORE_OFFSET 0x1ac
#define DRA752_BANDGAP_TSHUT_CORE_OFFSET 0x1b8
#define DRA752_BANDGAP_CUMUL_DTEMP_CORE_OFFSET 0x1c4
#define DRA752_DTEMP_CORE_0_OFFSET 0x208
#define DRA752_DTEMP_CORE_1_OFFSET 0x20c
......@@ -66,7 +65,6 @@
#define DRA752_STD_FUSE_OPP_BGAP_IVA_OFFSET 0x388
#define DRA752_TEMP_SENSOR_IVA_OFFSET 0x398
#define DRA752_BANDGAP_THRESHOLD_IVA_OFFSET 0x3a4
#define DRA752_BANDGAP_TSHUT_IVA_OFFSET 0x3ac
#define DRA752_BANDGAP_CUMUL_DTEMP_IVA_OFFSET 0x3b4
#define DRA752_DTEMP_IVA_0_OFFSET 0x3d0
#define DRA752_DTEMP_IVA_1_OFFSET 0x3d4
......@@ -78,7 +76,6 @@
#define DRA752_STD_FUSE_OPP_BGAP_MPU_OFFSET 0x4
#define DRA752_TEMP_SENSOR_MPU_OFFSET 0x14c
#define DRA752_BANDGAP_THRESHOLD_MPU_OFFSET 0x1a4
#define DRA752_BANDGAP_TSHUT_MPU_OFFSET 0x1b0
#define DRA752_BANDGAP_CUMUL_DTEMP_MPU_OFFSET 0x1bc
#define DRA752_DTEMP_MPU_0_OFFSET 0x1e0
#define DRA752_DTEMP_MPU_1_OFFSET 0x1e4
......@@ -90,7 +87,6 @@
#define DRA752_STD_FUSE_OPP_BGAP_DSPEVE_OFFSET 0x384
#define DRA752_TEMP_SENSOR_DSPEVE_OFFSET 0x394
#define DRA752_BANDGAP_THRESHOLD_DSPEVE_OFFSET 0x3a0
#define DRA752_BANDGAP_TSHUT_DSPEVE_OFFSET 0x3a8
#define DRA752_BANDGAP_CUMUL_DTEMP_DSPEVE_OFFSET 0x3b0
#define DRA752_DTEMP_DSPEVE_0_OFFSET 0x3bc
#define DRA752_DTEMP_DSPEVE_1_OFFSET 0x3c0
......@@ -102,7 +98,6 @@
#define DRA752_STD_FUSE_OPP_BGAP_GPU_OFFSET 0x0
#define DRA752_TEMP_SENSOR_GPU_OFFSET 0x150
#define DRA752_BANDGAP_THRESHOLD_GPU_OFFSET 0x1a8
#define DRA752_BANDGAP_TSHUT_GPU_OFFSET 0x1b4
#define DRA752_BANDGAP_CUMUL_DTEMP_GPU_OFFSET 0x1c0
#define DRA752_DTEMP_GPU_0_OFFSET 0x1f4
#define DRA752_DTEMP_GPU_1_OFFSET 0x1f8
......@@ -173,10 +168,6 @@
#define DRA752_BANDGAP_THRESHOLD_HOT_MASK (0x3ff << 16)
#define DRA752_BANDGAP_THRESHOLD_COLD_MASK (0x3ff << 0)
/* DRA752.TSHUT_THRESHOLD */
#define DRA752_TSHUT_THRESHOLD_MUXCTRL_MASK BIT(31)
#define DRA752_TSHUT_THRESHOLD_HOT_MASK (0x3ff << 16)
#define DRA752_TSHUT_THRESHOLD_COLD_MASK (0x3ff << 0)
/* DRA752.BANDGAP_CUMUL_DTEMP_CORE */
#define DRA752_BANDGAP_CUMUL_DTEMP_CORE_MASK (0xffffffff << 0)
......@@ -216,8 +207,6 @@
#define DRA752_GPU_MAX_TEMP 125000
#define DRA752_GPU_HYST_VAL 5000
/* interrupts thresholds */
#define DRA752_GPU_TSHUT_HOT 915
#define DRA752_GPU_TSHUT_COLD 900
#define DRA752_GPU_T_HOT 800
#define DRA752_GPU_T_COLD 795
......@@ -230,8 +219,6 @@
#define DRA752_MPU_MAX_TEMP 125000
#define DRA752_MPU_HYST_VAL 5000
/* interrupts thresholds */
#define DRA752_MPU_TSHUT_HOT 915
#define DRA752_MPU_TSHUT_COLD 900
#define DRA752_MPU_T_HOT 800
#define DRA752_MPU_T_COLD 795
......@@ -244,8 +231,6 @@
#define DRA752_CORE_MAX_TEMP 125000
#define DRA752_CORE_HYST_VAL 5000
/* interrupts thresholds */
#define DRA752_CORE_TSHUT_HOT 915
#define DRA752_CORE_TSHUT_COLD 900
#define DRA752_CORE_T_HOT 800
#define DRA752_CORE_T_COLD 795
......@@ -258,8 +243,6 @@
#define DRA752_DSPEVE_MAX_TEMP 125000
#define DRA752_DSPEVE_HYST_VAL 5000
/* interrupts thresholds */
#define DRA752_DSPEVE_TSHUT_HOT 915
#define DRA752_DSPEVE_TSHUT_COLD 900
#define DRA752_DSPEVE_T_HOT 800
#define DRA752_DSPEVE_T_COLD 795
......@@ -272,8 +255,6 @@
#define DRA752_IVA_MAX_TEMP 125000
#define DRA752_IVA_HYST_VAL 5000
/* interrupts thresholds */
#define DRA752_IVA_TSHUT_HOT 915
#define DRA752_IVA_TSHUT_COLD 900
#define DRA752_IVA_T_HOT 800
#define DRA752_IVA_T_COLD 795
......
......@@ -49,9 +49,6 @@ dra752_core_temp_sensor_registers = {
.bgap_threshold = DRA752_BANDGAP_THRESHOLD_CORE_OFFSET,
.threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK,
.threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK,
.tshut_threshold = DRA752_BANDGAP_TSHUT_CORE_OFFSET,
.tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK,
.tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK,
.bgap_status = DRA752_BANDGAP_STATUS_1_OFFSET,
.status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK,
.status_hot_mask = DRA752_BANDGAP_STATUS_1_HOT_CORE_MASK,
......@@ -85,9 +82,6 @@ dra752_iva_temp_sensor_registers = {
.bgap_threshold = DRA752_BANDGAP_THRESHOLD_IVA_OFFSET,
.threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK,
.threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK,
.tshut_threshold = DRA752_BANDGAP_TSHUT_IVA_OFFSET,
.tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK,
.tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK,
.bgap_status = DRA752_BANDGAP_STATUS_2_OFFSET,
.status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK,
.status_hot_mask = DRA752_BANDGAP_STATUS_2_HOT_IVA_MASK,
......@@ -121,9 +115,6 @@ dra752_mpu_temp_sensor_registers = {
.bgap_threshold = DRA752_BANDGAP_THRESHOLD_MPU_OFFSET,
.threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK,
.threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK,
.tshut_threshold = DRA752_BANDGAP_TSHUT_MPU_OFFSET,
.tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK,
.tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK,
.bgap_status = DRA752_BANDGAP_STATUS_1_OFFSET,
.status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK,
.status_hot_mask = DRA752_BANDGAP_STATUS_1_HOT_MPU_MASK,
......@@ -157,9 +148,6 @@ dra752_dspeve_temp_sensor_registers = {
.bgap_threshold = DRA752_BANDGAP_THRESHOLD_DSPEVE_OFFSET,
.threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK,
.threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK,
.tshut_threshold = DRA752_BANDGAP_TSHUT_DSPEVE_OFFSET,
.tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK,
.tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK,
.bgap_status = DRA752_BANDGAP_STATUS_2_OFFSET,
.status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK,
.status_hot_mask = DRA752_BANDGAP_STATUS_2_HOT_DSPEVE_MASK,
......@@ -193,9 +181,6 @@ dra752_gpu_temp_sensor_registers = {
.bgap_threshold = DRA752_BANDGAP_THRESHOLD_GPU_OFFSET,
.threshold_thot_mask = DRA752_BANDGAP_THRESHOLD_HOT_MASK,
.threshold_tcold_mask = DRA752_BANDGAP_THRESHOLD_COLD_MASK,
.tshut_threshold = DRA752_BANDGAP_TSHUT_GPU_OFFSET,
.tshut_hot_mask = DRA752_TSHUT_THRESHOLD_HOT_MASK,
.tshut_cold_mask = DRA752_TSHUT_THRESHOLD_COLD_MASK,
.bgap_status = DRA752_BANDGAP_STATUS_1_OFFSET,
.status_bgap_alert_mask = DRA752_BANDGAP_STATUS_1_ALERT_MASK,
.status_hot_mask = DRA752_BANDGAP_STATUS_1_HOT_GPU_MASK,
......@@ -211,8 +196,6 @@ dra752_gpu_temp_sensor_registers = {
/* Thresholds and limits for DRA752 MPU temperature sensor */
static struct temp_sensor_data dra752_mpu_temp_sensor_data = {
.tshut_hot = DRA752_MPU_TSHUT_HOT,
.tshut_cold = DRA752_MPU_TSHUT_COLD,
.t_hot = DRA752_MPU_T_HOT,
.t_cold = DRA752_MPU_T_COLD,
.min_freq = DRA752_MPU_MIN_FREQ,
......@@ -226,8 +209,6 @@ static struct temp_sensor_data dra752_mpu_temp_sensor_data = {
/* Thresholds and limits for DRA752 GPU temperature sensor */
static struct temp_sensor_data dra752_gpu_temp_sensor_data = {
.tshut_hot = DRA752_GPU_TSHUT_HOT,
.tshut_cold = DRA752_GPU_TSHUT_COLD,
.t_hot = DRA752_GPU_T_HOT,
.t_cold = DRA752_GPU_T_COLD,
.min_freq = DRA752_GPU_MIN_FREQ,
......@@ -241,8 +222,6 @@ static struct temp_sensor_data dra752_gpu_temp_sensor_data = {
/* Thresholds and limits for DRA752 CORE temperature sensor */
static struct temp_sensor_data dra752_core_temp_sensor_data = {
.tshut_hot = DRA752_CORE_TSHUT_HOT,
.tshut_cold = DRA752_CORE_TSHUT_COLD,
.t_hot = DRA752_CORE_T_HOT,
.t_cold = DRA752_CORE_T_COLD,
.min_freq = DRA752_CORE_MIN_FREQ,
......@@ -256,8 +235,6 @@ static struct temp_sensor_data dra752_core_temp_sensor_data = {
/* Thresholds and limits for DRA752 DSPEVE temperature sensor */
static struct temp_sensor_data dra752_dspeve_temp_sensor_data = {
.tshut_hot = DRA752_DSPEVE_TSHUT_HOT,
.tshut_cold = DRA752_DSPEVE_TSHUT_COLD,
.t_hot = DRA752_DSPEVE_T_HOT,
.t_cold = DRA752_DSPEVE_T_COLD,
.min_freq = DRA752_DSPEVE_MIN_FREQ,
......@@ -271,8 +248,6 @@ static struct temp_sensor_data dra752_dspeve_temp_sensor_data = {
/* Thresholds and limits for DRA752 IVA temperature sensor */
static struct temp_sensor_data dra752_iva_temp_sensor_data = {
.tshut_hot = DRA752_IVA_TSHUT_HOT,
.tshut_cold = DRA752_IVA_TSHUT_COLD,
.t_hot = DRA752_IVA_T_HOT,
.t_cold = DRA752_IVA_T_COLD,
.min_freq = DRA752_IVA_MIN_FREQ,
......@@ -416,8 +391,7 @@ int dra752_adc_to_temp[DRA752_ADC_END_VALUE - DRA752_ADC_START_VALUE + 1] = {
/* DRA752 data */
const struct ti_bandgap_data dra752_data = {
.features = TI_BANDGAP_FEATURE_TSHUT_CONFIG |
TI_BANDGAP_FEATURE_FREEZE_BIT |
.features = TI_BANDGAP_FEATURE_FREEZE_BIT |
TI_BANDGAP_FEATURE_TALERT |
TI_BANDGAP_FEATURE_COUNTER_DELAY |
TI_BANDGAP_FEATURE_HISTORY_BUFFER |
......
/*
* ZTE's zx2967 family thermal sensor driver
*
* Copyright (C) 2017 ZTE Ltd.
*
* Author: Baoyou Xie <baoyou.xie@linaro.org>
*
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/thermal.h>
/* Power Mode: 0->low 1->high */
#define ZX2967_THERMAL_POWER_MODE 0
#define ZX2967_POWER_MODE_LOW 0
#define ZX2967_POWER_MODE_HIGH 1
/* DCF Control Register */
#define ZX2967_THERMAL_DCF 0x4
#define ZX2967_DCF_EN BIT(1)
#define ZX2967_DCF_FREEZE BIT(0)
/* Selection Register */
#define ZX2967_THERMAL_SEL 0x8
/* Control Register */
#define ZX2967_THERMAL_CTRL 0x10
#define ZX2967_THERMAL_READY BIT(12)
#define ZX2967_THERMAL_TEMP_MASK GENMASK(11, 0)
#define ZX2967_THERMAL_ID_MASK 0x18
#define ZX2967_THERMAL_ID 0x10
#define ZX2967_GET_TEMP_TIMEOUT_US (100 * 1024)
/**
* struct zx2967_thermal_priv - zx2967 thermal sensor private structure
* @tzd: struct thermal_zone_device where the sensor is registered
* @lock: prevents read sensor in parallel
* @clk_topcrm: topcrm clk structure
* @clk_apb: apb clk structure
* @regs: pointer to base address of the thermal sensor
*/
struct zx2967_thermal_priv {
struct thermal_zone_device *tzd;
struct mutex lock;
struct clk *clk_topcrm;
struct clk *clk_apb;
void __iomem *regs;
struct device *dev;
};
static int zx2967_thermal_get_temp(void *data, int *temp)
{
void __iomem *regs;
struct zx2967_thermal_priv *priv = data;
u32 val;
int ret;
if (!priv->tzd)
return -EAGAIN;
regs = priv->regs;
mutex_lock(&priv->lock);
writel_relaxed(ZX2967_POWER_MODE_LOW,
regs + ZX2967_THERMAL_POWER_MODE);
writel_relaxed(ZX2967_DCF_EN, regs + ZX2967_THERMAL_DCF);
val = readl_relaxed(regs + ZX2967_THERMAL_SEL);
val &= ~ZX2967_THERMAL_ID_MASK;
val |= ZX2967_THERMAL_ID;
writel_relaxed(val, regs + ZX2967_THERMAL_SEL);
/*
* Must wait for a while, surely it's a bit odd.
* otherwise temperature value we got has a few deviation, even if
* the THERMAL_READY bit is set.
*/
usleep_range(100, 300);
ret = readx_poll_timeout(readl, regs + ZX2967_THERMAL_CTRL,
val, val & ZX2967_THERMAL_READY, 300,
ZX2967_GET_TEMP_TIMEOUT_US);
if (ret) {
dev_err(priv->dev, "Thermal sensor data timeout\n");
goto unlock;
}
writel_relaxed(ZX2967_DCF_FREEZE | ZX2967_DCF_EN,
regs + ZX2967_THERMAL_DCF);
val = readl_relaxed(regs + ZX2967_THERMAL_CTRL)
& ZX2967_THERMAL_TEMP_MASK;
writel_relaxed(ZX2967_POWER_MODE_HIGH,
regs + ZX2967_THERMAL_POWER_MODE);
/*
* Calculate temperature
* In dts, slope is multiplied by 1000.
*/
*temp = DIV_ROUND_CLOSEST(((s32)val + priv->tzd->tzp->offset) * 1000,
priv->tzd->tzp->slope);
unlock:
mutex_unlock(&priv->lock);
return ret;
}
static struct thermal_zone_of_device_ops zx2967_of_thermal_ops = {
.get_temp = zx2967_thermal_get_temp,
};
static int zx2967_thermal_probe(struct platform_device *pdev)
{
struct zx2967_thermal_priv *priv;
struct resource *res;
int ret;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
priv->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(priv->regs))
return PTR_ERR(priv->regs);
priv->clk_topcrm = devm_clk_get(&pdev->dev, "topcrm");
if (IS_ERR(priv->clk_topcrm)) {
ret = PTR_ERR(priv->clk_topcrm);
dev_err(&pdev->dev, "failed to get topcrm clock: %d\n", ret);
return ret;
}
ret = clk_prepare_enable(priv->clk_topcrm);
if (ret) {
dev_err(&pdev->dev, "failed to enable topcrm clock: %d\n",
ret);
return ret;
}
priv->clk_apb = devm_clk_get(&pdev->dev, "apb");
if (IS_ERR(priv->clk_apb)) {
ret = PTR_ERR(priv->clk_apb);
dev_err(&pdev->dev, "failed to get apb clock: %d\n", ret);
goto disable_clk_topcrm;
}
ret = clk_prepare_enable(priv->clk_apb);
if (ret) {
dev_err(&pdev->dev, "failed to enable apb clock: %d\n",
ret);
goto disable_clk_topcrm;
}
mutex_init(&priv->lock);
priv->tzd = thermal_zone_of_sensor_register(&pdev->dev,
0, priv, &zx2967_of_thermal_ops);
if (IS_ERR(priv->tzd)) {
ret = PTR_ERR(priv->tzd);
dev_err(&pdev->dev, "failed to register sensor: %d\n", ret);
goto disable_clk_all;
}
if (priv->tzd->tzp->slope == 0) {
thermal_zone_of_sensor_unregister(&pdev->dev, priv->tzd);
dev_err(&pdev->dev, "coefficients of sensor is invalid\n");
ret = -EINVAL;
goto disable_clk_all;
}
priv->dev = &pdev->dev;
platform_set_drvdata(pdev, priv);
return 0;
disable_clk_all:
clk_disable_unprepare(priv->clk_apb);
disable_clk_topcrm:
clk_disable_unprepare(priv->clk_topcrm);
return ret;
}
static int zx2967_thermal_exit(struct platform_device *pdev)
{
struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev);
thermal_zone_of_sensor_unregister(&pdev->dev, priv->tzd);
clk_disable_unprepare(priv->clk_topcrm);
clk_disable_unprepare(priv->clk_apb);
return 0;
}
static const struct of_device_id zx2967_thermal_id_table[] = {
{ .compatible = "zte,zx296718-thermal" },
{}
};
MODULE_DEVICE_TABLE(of, zx2967_thermal_id_table);
#ifdef CONFIG_PM_SLEEP
static int zx2967_thermal_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev);
if (priv && priv->clk_topcrm)
clk_disable_unprepare(priv->clk_topcrm);
if (priv && priv->clk_apb)
clk_disable_unprepare(priv->clk_apb);
return 0;
}
static int zx2967_thermal_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev);
int error;
error = clk_prepare_enable(priv->clk_topcrm);
if (error)
return error;
error = clk_prepare_enable(priv->clk_apb);
if (error) {
clk_disable_unprepare(priv->clk_topcrm);
return error;
}
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(zx2967_thermal_pm_ops,
zx2967_thermal_suspend, zx2967_thermal_resume);
static struct platform_driver zx2967_thermal_driver = {
.probe = zx2967_thermal_probe,
.remove = zx2967_thermal_exit,
.driver = {
.name = "zx2967_thermal",
.of_match_table = zx2967_thermal_id_table,
.pm = &zx2967_thermal_pm_ops,
},
};
module_platform_driver(zx2967_thermal_driver);
MODULE_AUTHOR("Baoyou Xie <baoyou.xie@linaro.org>");
MODULE_DESCRIPTION("ZTE zx2967 thermal driver");
MODULE_LICENSE("GPL v2");
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册