diff --git a/arch/x86/include/asm/intel_pinctrl.h b/arch/x86/include/asm/intel_pinctrl.h new file mode 100644 index 0000000000000000000000000000000000000000..72fd9246cbd1da85b372db9a0d016082c862e819 --- /dev/null +++ b/arch/x86/include/asm/intel_pinctrl.h @@ -0,0 +1,306 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2017 Intel Corporation. + * Copyright 2019 Google LLC + * + * Modified from coreboot gpio.h + */ + +#ifndef __ASM_INTEL_PINCTRL_H +#define __ASM_INTEL_PINCTRL_H + +#include + +/** + * struct pad_config - config for a pad + * @pad: offset of pad within community + * @pad_config: Pad config data corresponding to DW0, DW1, etc. + */ +struct pad_config { + int pad; + u32 pad_config[4]; +}; + +#include + +/* GPIO community IOSF sideband clock gating */ +#define MISCCFG_GPSIDEDPCGEN BIT(5) +/* GPIO community RCOMP clock gating */ +#define MISCCFG_GPRCOMPCDLCGEN BIT(4) +/* GPIO community RTC clock gating */ +#define MISCCFG_GPRTCDLCGEN BIT(3) +/* GFX controller clock gating */ +#define MISCCFG_GSXSLCGEN BIT(2) +/* GPIO community partition clock gating */ +#define MISCCFG_GPDPCGEN BIT(1) +/* GPIO community local clock gating */ +#define MISCCFG_GPDLCGEN BIT(0) +/* Enable GPIO community power management configuration */ +#define MISCCFG_ENABLE_GPIO_PM_CONFIG (MISCCFG_GPSIDEDPCGEN | \ + MISCCFG_GPRCOMPCDLCGEN | MISCCFG_GPRTCDLCGEN | MISCCFG_GSXSLCGEN \ + | MISCCFG_GPDPCGEN | MISCCFG_GPDLCGEN) + +/* + * GPIO numbers may not be contiguous and instead will have a different + * starting pin number for each pad group. + */ +#define INTEL_GPP_BASE(first_of_community, start_of_group, end_of_group,\ + group_pad_base) \ + { \ + .first_pad = (start_of_group) - (first_of_community), \ + .size = (end_of_group) - (start_of_group) + 1, \ + .acpi_pad_base = (group_pad_base), \ + } + +/* + * A pad base of -1 indicates that this group uses contiguous numbering + * and a pad base should not be used for this group. + */ +#define PAD_BASE_NONE -1 + +/* The common/default group numbering is contiguous */ +#define INTEL_GPP(first_of_community, start_of_group, end_of_group) \ + INTEL_GPP_BASE(first_of_community, start_of_group, end_of_group,\ + PAD_BASE_NONE) + +/** + * struct reset_mapping - logical to actual value for PADRSTCFG in DW0 + * + * Note that the values are expected to be within the field placement of the + * register itself. i.e. if the reset field is at 31:30 then the values within + * logical and chipset should occupy 31:30. + */ +struct reset_mapping { + u32 logical; + u32 chipset; +}; + +/** + * struct pad_group - describes the groups within each community + * + * @first_pad: offset of first pad of the group relative to the community + * @size: size of the group + * @acpi_pad_base: starting pin number for the pads in this group when they are + * used in ACPI. This is only needed if the pins are not contiguous across + * groups. Most groups will have this set to PAD_BASE_NONE and use + * contiguous numbering for ACPI. + */ +struct pad_group { + int first_pad; + uint size; + int acpi_pad_base; +}; + +/** + * struct pad_community - community of pads + * + * This describes a community, or each group within a community when multiple + * groups exist inside a community + * + * @name: Community name + * @acpi_path: ACPI path + * @num_gpi_regs: number of gpi registers in community + * @max_pads_per_group: number of pads in each group; number of pads bit-mapped + * in each GPI status/en and Host Own Reg + * @first_pad: first pad in community + * @last_pad: last pad in community + * @host_own_reg_0: offset to Host Ownership Reg 0 + * @gpi_int_sts_reg_0: offset to GPI Int STS Reg 0 + * @gpi_int_en_reg_0: offset to GPI Int Enable Reg 0 + * @gpi_smi_sts_reg_0: offset to GPI SMI STS Reg 0 + * @gpi_smi_en_reg_0: offset to GPI SMI EN Reg 0 + * @pad_cfg_base: offset to first PAD_GFG_DW0 Reg + * @gpi_status_offset: specifies offset in struct gpi_status + * @port: PCR Port ID + * @reset_map: PADRSTCFG logical to chipset mapping + * @num_reset_vals: number of values in @reset_map + * @groups; list of groups for this community + * @num_groups: number of groups + */ +struct pad_community { + const char *name; + const char *acpi_path; + size_t num_gpi_regs; + size_t max_pads_per_group; + uint first_pad; + uint last_pad; + u16 host_own_reg_0; + u16 gpi_int_sts_reg_0; + u16 gpi_int_en_reg_0; + u16 gpi_smi_sts_reg_0; + u16 gpi_smi_en_reg_0; + u16 pad_cfg_base; + u8 gpi_status_offset; + u8 port; + const struct reset_mapping *reset_map; + size_t num_reset_vals; + const struct pad_group *groups; + size_t num_groups; +}; + +/** + * struct intel_pinctrl_priv - private data for each pinctrl device + * + * @comm: Pad community for this device + * @num_cfgs: Number of configuration words for each pad + * @itss: ITSS device (for interrupt handling) + * @itss_pol_cfg: Use to program Interrupt Polarity Control (IPCx) register + * Each bit represents IRQx Active High Polarity Disable configuration: + * when set to 1, the interrupt polarity associated with IRQx is inverted + * to appear as Active Low to IOAPIC and vice versa + */ +struct intel_pinctrl_priv { + const struct pad_community *comm; + int num_cfgs; + struct udevice *itss; + bool itss_pol_cfg; +}; + +/* Exported common operations for the pinctrl driver */ +extern const struct pinctrl_ops intel_pinctrl_ops; + +/* Exported common probe function for the pinctrl driver */ +int intel_pinctrl_probe(struct udevice *dev); + +/** + * intel_pinctrl_ofdata_to_platdata() - Handle common platdata setup + * + * @dev: Pinctrl device + * @comm: Pad community for this device + * @num_cfgs: Number of configuration words for each pad + * @return 0 if OK, -EDOM if @comm is NULL, other -ve value on other error + */ +int intel_pinctrl_ofdata_to_platdata(struct udevice *dev, + const struct pad_community *comm, + int num_cfgs); + +/** + * pinctrl_route_gpe() - set GPIO groups for the general-purpose-event blocks + * + * The values from PMC register GPE_CFG are passed which is then mapped to + * proper groups for MISCCFG. This basically sets the MISCCFG register bits: + * dw0 = gpe0_route[11:8]. This is ACPI GPE0b. + * dw1 = gpe0_route[15:12]. This is ACPI GPE0c. + * dw2 = gpe0_route[19:16]. This is ACPI GPE0d. + * + * @dev: ITSS device + * @gpe0b: Value for GPE0B + * @gpe0c: Value for GPE0C + * @gpe0d: Value for GPE0D + * @return 0 if OK, -ve on error + */ +int pinctrl_route_gpe(struct udevice *dev, uint gpe0b, uint gpe0c, uint gpe0d); + +/** + * pinctrl_config_pads() - Configure a list of pads + * + * Configures multiple pads using the provided data from the device tree. + * + * @dev: pinctrl device (any will do) + * @pads: Pad data, consisting of a pad number followed by num_cfgs entries + * containing the data for that pad (num_cfgs is set by the pinctrl device) + * @pads_count: Number of pads to configure + * @return 0 if OK, -ve on error + */ +int pinctrl_config_pads(struct udevice *dev, u32 *pads, int pads_count); + +/** + * pinctrl_gpi_clear_int_cfg() - Set up the interrupts for use + * + * This enables the interrupt inputs and clears the status register bits + * + * @return 0 if OK, -ve on error + */ +int pinctrl_gpi_clear_int_cfg(void); + +/** + * pinctrl_config_pads_for_node() - Configure pads + * + * Set up the pads using the data in a given node + * + * @dev: pinctrl device (any will do) + * @node: Node containing the 'pads' property with the data in it + * @return 0 if OK, -ve on error + */ +int pinctrl_config_pads_for_node(struct udevice *dev, ofnode node); + +/** + * pinctrl_read_pads() - Read pad data from a node + * + * @dev: pinctrl device (any will do, it is just used to get config) + * @node: Node to read pad data from + * @prop: Property name to use (e.g. "pads") + * @padsp: Returns a pointer to an allocated array of pad data, in the format: + * + * + * + * ... + * + * The number of pad config values is set by the pinctrl controller. + * The caller must free this array. + * @pad_countp: Returns the number of pads read + * @ereturn 0 if OK, -ve on error + */ +int pinctrl_read_pads(struct udevice *dev, ofnode node, const char *prop, + u32 **padsp, int *pad_countp); + +/** + * pinctrl_count_pads() - Count the number of pads in a pad array + * + * This used used with of-platdata where the array may be smaller than its + * maximum size. This function searches for the last pad in the array by finding + * the first 'zero' record + * + * This works out the number of records in the array. Each record has one word + * for the pad and num_cfgs words for the config. + * + * @dev: pinctrl device (any will do) + * @pads: Array of pad data + * @size: Size of pad data in bytes + * @return number of pads represented by the data + */ +int pinctrl_count_pads(struct udevice *dev, u32 *pads, int size); + +/** + * intel_pinctrl_get_config_reg_addr() - Get address of the pin config registers + * + * @dev: Pinctrl device + * @offset: GPIO offset within this device + * @return register offset within the GPIO p2sb region + */ +u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset); + +/** + * intel_pinctrl_get_config_reg() - Get the value of a GPIO register + * + * @dev: Pinctrl device + * @offset: GPIO offset within this device + * @return register value within the GPIO p2sb region + */ +u32 intel_pinctrl_get_config_reg(struct udevice *dev, uint offset); + +/** + * intel_pinctrl_get_pad() - Get pad information for a pad + * + * This is used by the GPIO controller to find the pinctrl used by a pad. + * + * @pad: Pad to check + * @devp: Returns pinctrl device containing that pad + * @offsetp: Returns offset of pad within that pinctrl device + */ +int intel_pinctrl_get_pad(uint pad, struct udevice **devp, uint *offsetp); + +/** + * intel_pinctrl_get_acpi_pin() - Get the ACPI pin for a pinctrl pin + * + * Maps a pinctrl pin (in terms of its offset within the pins controlled by that + * pinctrl) to an ACPI GPIO pin-table entry. + * + * @dev: Pinctrl device to check + * @offset: Offset of pin within that device (0 = first) + * @return associated ACPI GPIO pin-table entry, or standard pin number if the + * ACPI pad base is not set + */ +int intel_pinctrl_get_acpi_pin(struct udevice *dev, uint offset); + +#endif diff --git a/arch/x86/include/asm/intel_pinctrl_defs.h b/arch/x86/include/asm/intel_pinctrl_defs.h new file mode 100644 index 0000000000000000000000000000000000000000..6da06bb52b449112eb69921eaa76330081c23240 --- /dev/null +++ b/arch/x86/include/asm/intel_pinctrl_defs.h @@ -0,0 +1,373 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015-2016 Intel Corp. + * Copyright 2019 Google LLC + * + * Modified from coreboot gpio_defs.h + */ + +#ifndef _ASM_INTEL_PINCTRL_DEFS_H_ +#define _ASM_INTEL_PINCTRL_DEFS_H_ + +/* This file is included by device trees, so avoid BIT() macros */ + +#define PAD_CFG0_TX_STATE_BIT 0 +#define PAD_CFG0_TX_STATE (1 << PAD_CFG0_TX_STATE_BIT) +#define PAD_CFG0_RX_STATE_BIT 1 +#define PAD_CFG0_RX_STATE (1 << PAD_CFG0_RX_STATE_BIT) +#define PAD_CFG0_TX_DISABLE (1 << 8) +#define PAD_CFG0_RX_DISABLE (1 << 9) + +#define PAD_CFG0_MODE_SHIFT 10 +#define PAD_CFG0_MODE_MASK (7 << PAD_CFG0_MODE_SHIFT) +#define PAD_CFG0_MODE_GPIO (0 << PAD_CFG0_MODE_SHIFT) +#define PAD_CFG0_MODE_NF1 (1 << PAD_CFG0_MODE_SHIFT) +#define PAD_CFG0_MODE_NF2 (2 << PAD_CFG0_MODE_SHIFT) +#define PAD_CFG0_MODE_NF3 (3 << PAD_CFG0_MODE_SHIFT) +#define PAD_CFG0_MODE_NF4 (4 << PAD_CFG0_MODE_SHIFT) +#define PAD_CFG0_MODE_NF5 (5 << PAD_CFG0_MODE_SHIFT) +#define PAD_CFG0_MODE_NF6 (6 << PAD_CFG0_MODE_SHIFT) + +#define PAD_CFG0_ROUTE_MASK (0xf << 17) +#define PAD_CFG0_ROUTE_NMI (1 << 17) +#define PAD_CFG0_ROUTE_SMI (1 << 18) +#define PAD_CFG0_ROUTE_SCI (1 << 19) +#define PAD_CFG0_ROUTE_IOAPIC (1 << 20) +#define PAD_CFG0_RXTENCFG_MASK (3 << 21) +#define PAD_CFG0_RXINV_MASK (1 << 23) +#define PAD_CFG0_RX_POL_INVERT (1 << 23) +#define PAD_CFG0_RX_POL_NONE (0 << 23) +#define PAD_CFG0_PREGFRXSEL (1 << 24) +#define PAD_CFG0_TRIG_MASK (3 << 25) +#define PAD_CFG0_TRIG_LEVEL (0 << 25) +#define PAD_CFG0_TRIG_EDGE_SINGLE (1 << 25) /* controlled by RX_INVERT*/ +#define PAD_CFG0_TRIG_OFF (2 << 25) +#define PAD_CFG0_TRIG_EDGE_BOTH (3 << 25) +#define PAD_CFG0_RXRAW1_MASK (1 << 28) +#define PAD_CFG0_RXPADSTSEL_MASK (1 << 29) +#define PAD_CFG0_RESET_MASK (3 << 30) +#define PAD_CFG0_LOGICAL_RESET_PWROK (0U << 30) +#define PAD_CFG0_LOGICAL_RESET_DEEP (1U << 30) +#define PAD_CFG0_LOGICAL_RESET_PLTRST (2U << 30) +#define PAD_CFG0_LOGICAL_RESET_RSMRST (3U << 30) + +/* + * Use the fourth bit in IntSel field to indicate gpio ownership. This field is + * RO and hence not used during gpio configuration. + */ +#define PAD_CFG1_GPIO_DRIVER (0x1 << 4) +#define PAD_CFG1_IRQ_MASK (0xff << 0) +#define PAD_CFG1_IOSTERM_MASK (0x3 << 8) +#define PAD_CFG1_IOSTERM_SAME (0x0 << 8) +#define PAD_CFG1_IOSTERM_DISPUPD (0x1 << 8) +#define PAD_CFG1_IOSTERM_ENPD (0x2 << 8) +#define PAD_CFG1_IOSTERM_ENPU (0x3 << 8) +#define PAD_CFG1_PULL_MASK (0xf << 10) +#define PAD_CFG1_PULL_NONE (0x0 << 10) +#define PAD_CFG1_PULL_DN_5K (0x2 << 10) +#define PAD_CFG1_PULL_DN_20K (0x4 << 10) +#define PAD_CFG1_PULL_UP_1K (0x9 << 10) +#define PAD_CFG1_PULL_UP_5K (0xa << 10) +#define PAD_CFG1_PULL_UP_2K (0xb << 10) +#define PAD_CFG1_PULL_UP_20K (0xc << 10) +#define PAD_CFG1_PULL_UP_667 (0xd << 10) +#define PAD_CFG1_PULL_NATIVE (0xf << 10) + +/* Tx enabled driving last value driven, Rx enabled */ +#define PAD_CFG1_IOSSTATE_TX_LAST_RXE (0x0 << 14) +/* + * Tx enabled driving 0, Rx disabled and Rx driving 0 back to its controller + * internally + */ +#define PAD_CFG1_IOSSTATE_TX0_RX_DCR_X0 (0x1 << 14) +/* + * Tx enabled driving 0, Rx disabled and Rx driving 1 back to its controller + * internally + */ +#define PAD_CFG1_IOSSTATE_TX0_RX_DCR_X1 (0x2 << 14) +/* + * Tx enabled driving 1, Rx disabled and Rx driving 0 back to its controller + * internally + */ +#define PAD_CFG1_IOSSTATE_TX1_RX_DCR_X0 (0x3 << 14) +/* + * Tx enabled driving 1, Rx disabled and Rx driving 1 back to its controller + * internally + */ +#define PAD_CFG1_IOSSTATE_TX1_RX_DCR_X1 (0x4 << 14) +/* Tx enabled driving 0, Rx enabled */ +#define PAD_CFG1_IOSSTATE_TX0_RXE (0x5 << 14) +/* Tx enabled driving 1, Rx enabled */ +#define PAD_CFG1_IOSSTATE_TX1_RXE (0x6 << 14) +/* Hi-Z, Rx driving 0 back to its controller internally */ +#define PAD_CFG1_IOSSTATE_HIZCRX0 (0x7 << 14) +/* Hi-Z, Rx driving 1 back to its controller internally */ +#define PAD_CFG1_IOSSTATE_HIZCRX1 (0x8 << 14) +/* Tx disabled, Rx enabled */ +#define PAD_CFG1_IOSSTATE_TXD_RXE (0x9 << 14) +#define PAD_CFG1_IOSSTATE_IGNORE (0xf << 14) /* Ignore Iostandby */ +/* mask to extract Iostandby bits */ +#define PAD_CFG1_IOSSTATE_MASK (0xf << 14) +#define PAD_CFG1_IOSSTATE_SHIFT 14 /* set Iostandby bits [17:14] */ + +#define PAD_CFG2_DEBEN 1 +/* Debounce Duration = (2 ^ PAD_CFG2_DEBOUNCE_x_RTC) * RTC clock duration */ +#define PAD_CFG2_DEBOUNCE_8_RTC (0x3 << 1) +#define PAD_CFG2_DEBOUNCE_16_RTC (0x4 << 1) +#define PAD_CFG2_DEBOUNCE_32_RTC (0x5 << 1) +#define PAD_CFG2_DEBOUNCE_64_RTC (0x6 << 1) +#define PAD_CFG2_DEBOUNCE_128_RTC (0x7 << 1) +#define PAD_CFG2_DEBOUNCE_256_RTC (0x8 << 1) +#define PAD_CFG2_DEBOUNCE_512_RTC (0x9 << 1) +#define PAD_CFG2_DEBOUNCE_1K_RTC (0xa << 1) +#define PAD_CFG2_DEBOUNCE_2K_RTC (0xb << 1) +#define PAD_CFG2_DEBOUNCE_4K_RTC (0xc << 1) +#define PAD_CFG2_DEBOUNCE_8K_RTC (0xd << 1) +#define PAD_CFG2_DEBOUNCE_16K_RTC (0xe << 1) +#define PAD_CFG2_DEBOUNCE_32K_RTC (0xf << 1) +#define PAD_CFG2_DEBOUNCE_MASK 0x1f + +/* voltage tolerance 0=3.3V default 1=1.8V tolerant */ +#if IS_ENABLED(INTEL_PINCTRL_IOSTANDBY) +#define PAD_CFG1_TOL_MASK (0x1 << 25) +#define PAD_CFG1_TOL_1V8 (0x1 << 25) +#endif + +#define PAD_FUNC(value) PAD_CFG0_MODE_##value +#define PAD_RESET(value) PAD_CFG0_LOGICAL_RESET_##value +#define PAD_PULL(value) PAD_CFG1_PULL_##value + +#define PAD_IOSSTATE(value) PAD_CFG1_IOSSTATE_##value +#define PAD_IOSTERM(value) PAD_CFG1_IOSTERM_##value + +#define PAD_IRQ_CFG(route, trig, inv) \ + (PAD_CFG0_ROUTE_##route | \ + PAD_CFG0_TRIG_##trig | \ + PAD_CFG0_RX_POL_##inv) + +#if IS_ENABLED(INTEL_PINCTRL_DUAL_ROUTE_SUPPORT) +#define PAD_IRQ_CFG_DUAL_ROUTE(route1, route2, trig, inv) \ + (PAD_CFG0_ROUTE_##route1 | \ + PAD_CFG0_ROUTE_##route2 | \ + PAD_CFG0_TRIG_##trig | \ + PAD_CFG0_RX_POL_##inv) +#endif /* CONFIG_INTEL_PINCTRL_DUAL_ROUTE_SUPPORT */ + +#define _PAD_CFG_STRUCT(__pad, __config0, __config1) \ + __pad(__config0) (__config1) + +/* Native function configuration */ +#define PAD_CFG_NF(pad, pull, rst, func) \ + _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \ + PAD_IOSSTATE(TX_LAST_RXE)) + +#if IS_ENABLED(CONFIG_INTEL_GPIO_PADCFG_PADTOL) +/* + * Native 1.8V tolerant pad, only applies to some pads like I2C/I2S. Not + * applicable to all SOCs. Refer EDS. + */ +#define PAD_CFG_NF_1V8(pad, pull, rst, func) \ + _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) |\ + PAD_IOSSTATE(TX_LAST_RXE) | PAD_CFG1_TOL_1V8) +#endif + +/* Native function configuration for standby state */ +#define PAD_CFG_NF_IOSSTATE(pad, pull, rst, func, iosstate) \ + _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \ + PAD_IOSSTATE(iosstate)) + +/* + * Native function configuration for standby state, also configuring iostandby + * as masked + */ +#define PAD_CFG_NF_IOSTANDBY_IGNORE(pad, pull, rst, func) \ + _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \ + PAD_IOSSTATE(IGNORE)) + +/* + * Native function configuration for standby state, also configuring iosstate + * and iosterm + */ +#define PAD_CFG_NF_IOSSTATE_IOSTERM(pad, pull, rst, func, iosstate, iosterm) \ + _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \ + PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm)) + +/* General purpose output, no pullup/down */ +#define PAD_CFG_GPO(pad, val, rst) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_RX_DISABLE | !!val, \ + PAD_PULL(NONE) | PAD_IOSSTATE(TX_LAST_RXE)) + +/* General purpose output, with termination specified */ +#define PAD_CFG_TERM_GPO(pad, val, pull, rst) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_RX_DISABLE | !!val, \ + PAD_PULL(pull) | PAD_IOSSTATE(TX_LAST_RXE)) + +/* General purpose output, no pullup/down */ +#define PAD_CFG_GPO_GPIO_DRIVER(pad, val, rst, pull) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_RX_DISABLE | !!val, \ + PAD_PULL(pull) | PAD_IOSSTATE(TX_LAST_RXE) | \ + PAD_CFG1_GPIO_DRIVER) + +/* General purpose output */ +#define PAD_CFG_GPO_IOSSTATE_IOSTERM(pad, val, rst, pull, iosstate, ioterm) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_RX_DISABLE | !!val, \ + PAD_PULL(pull) | PAD_IOSSTATE(iosstate) | PAD_IOSTERM(ioterm)) + +/* General purpose input */ +#define PAD_CFG_GPI(pad, pull, rst) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE, \ + PAD_PULL(pull) | PAD_IOSSTATE(TXD_RXE)) + +/* General purpose input. The following macro sets the + * Host Software Pad Ownership to GPIO Driver mode. + */ +#define PAD_CFG_GPI_GPIO_DRIVER(pad, pull, rst) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE, \ + PAD_PULL(pull) | PAD_CFG1_GPIO_DRIVER | PAD_IOSSTATE(TXD_RXE)) + +#define PAD_CFG_GPIO_DRIVER_HI_Z(pad, pull, rst, iosstate, iosterm) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_CFG0_RX_DISABLE, \ + PAD_PULL(pull) | PAD_CFG1_GPIO_DRIVER | \ + PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm)) + +#define PAD_CFG_GPIO_HI_Z(pad, pull, rst, iosstate, iosterm) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_CFG0_RX_DISABLE, PAD_PULL(pull) | \ + PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm)) + +/* GPIO Interrupt */ +#define PAD_CFG_GPI_INT(pad, pull, rst, trig) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_CFG0_TRIG_##trig | PAD_CFG0_RX_POL_NONE, \ + PAD_PULL(pull) | PAD_CFG1_GPIO_DRIVER | PAD_IOSSTATE(TXD_RXE)) + +/* + * No Connect configuration for unused pad. + * Both TX and RX are disabled. RX disabling is done to avoid unnecessary + * setting of GPI_STS. + */ +#define PAD_NC(pad, pull) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(DEEP) | \ + PAD_CFG0_TX_DISABLE | PAD_CFG0_RX_DISABLE, \ + PAD_PULL(pull) | PAD_IOSSTATE(TXD_RXE)) + +/* General purpose input, routed to APIC */ +#define PAD_CFG_GPI_APIC(pad, pull, rst, trig, inv) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG(IOAPIC, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(TXD_RXE)) + +/* General purpose input, routed to APIC - with IOStandby Config*/ +#define PAD_CFG_GPI_APIC_IOS(pad, pull, rst, trig, inv, iosstate, iosterm) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG(IOAPIC, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm)) + +/* + * The following APIC macros assume the APIC will handle the filtering + * on its own end. One just needs to pass an active high message into the + * ITSS. + */ +#define PAD_CFG_GPI_APIC_LOW(pad, pull, rst) \ + PAD_CFG_GPI_APIC(pad, pull, rst, LEVEL, INVERT) + +#define PAD_CFG_GPI_APIC_HIGH(pad, pull, rst) \ + PAD_CFG_GPI_APIC(pad, pull, rst, LEVEL, NONE) + +#define PAD_CFG_GPI_APIC_EDGE_LOW(pad, pull, rst) \ + PAD_CFG_GPI_APIC(pad, pull, rst, EDGE_SINGLE, INVERT) + +/* General purpose input, routed to SMI */ +#define PAD_CFG_GPI_SMI(pad, pull, rst, trig, inv) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG(SMI, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(TXD_RXE)) + +/* General purpose input, routed to SMI */ +#define PAD_CFG_GPI_SMI_IOS(pad, pull, rst, trig, inv, iosstate, iosterm) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG(SMI, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm)) + +#define PAD_CFG_GPI_SMI_LOW(pad, pull, rst, trig) \ + PAD_CFG_GPI_SMI(pad, pull, rst, trig, INVERT) + +#define PAD_CFG_GPI_SMI_HIGH(pad, pull, rst, trig) \ + PAD_CFG_GPI_SMI(pad, pull, rst, trig, NONE) + +/* General purpose input, routed to SCI */ +#define PAD_CFG_GPI_SCI(pad, pull, rst, trig, inv) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG(SCI, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(TXD_RXE)) + +/* General purpose input, routed to SCI */ +#define PAD_CFG_GPI_SCI_IOS(pad, pull, rst, trig, inv, iosstate, iosterm) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG(SCI, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(iosstate) | PAD_IOSTERM(iosterm)) + +#define PAD_CFG_GPI_SCI_LOW(pad, pull, rst, trig) \ + PAD_CFG_GPI_SCI(pad, pull, rst, trig, INVERT) + +#define PAD_CFG_GPI_SCI_HIGH(pad, pull, rst, trig) \ + PAD_CFG_GPI_SCI(pad, pull, rst, trig, NONE) + +#define PAD_CFG_GPI_SCI_DEBEN(pad, pull, rst, trig, inv, dur) \ + _PAD_CFG_STRUCT_3(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG(SCI, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(TXD_RXE), PAD_CFG2_DEBEN | PAD_CFG2_##dur) + +#define PAD_CFG_GPI_SCI_LOW_DEBEN(pad, pull, rst, trig, dur) \ + PAD_CFG_GPI_SCI_DEBEN(pad, pull, rst, trig, INVERT, dur) + +#define PAD_CFG_GPI_SCI_HIGH_DEBEN(pad, pull, rst, trig, dur) \ + PAD_CFG_GPI_SCI_DEBEN(pad, pull, rst, trig, NONE, dur) + +/* General purpose input, routed to NMI */ +#define PAD_CFG_GPI_NMI(pad, pull, rst, trig, inv) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG(NMI, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(TXD_RXE)) + +#if IS_ENABLED(INTEL_PINCTRL_DUAL_ROUTE_SUPPORT) +/* GPI, GPIO Driver, SCI interrupt */ +#define PAD_CFG_GPI_GPIO_DRIVER_SCI(pad, pull, rst, trig, inv) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG(SCI, trig, inv), \ + PAD_PULL(pull) | PAD_CFG1_GPIO_DRIVER | PAD_IOSSTATE(TXD_RXE)) + +#define PAD_CFG_GPI_DUAL_ROUTE(pad, pull, rst, trig, inv, route1, route2) \ + _PAD_CFG_STRUCT(pad, \ + PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ + PAD_IRQ_CFG_DUAL_ROUTE(route1, route2, trig, inv), \ + PAD_PULL(pull) | PAD_IOSSTATE(TXD_RXE)) + +#define PAD_CFG_GPI_IRQ_WAKE(pad, pull, rst, trig, inv) \ + PAD_CFG_GPI_DUAL_ROUTE(pad, pull, rst, trig, inv, IOAPIC, SCI) + +#endif /* CONFIG_INTEL_PINCTRL_DUAL_ROUTE_SUPPORT */ + +#endif /* _ASM_INTEL_PINCTRL_DEFS_H_ */ diff --git a/doc/device-tree-bindings/pinctrl/intel,apl-pinctrl.txt b/doc/device-tree-bindings/pinctrl/intel,apl-pinctrl.txt new file mode 100644 index 0000000000000000000000000000000000000000..cd7f8a0ca38059243fbf9a3d09558b0de88fcd32 --- /dev/null +++ b/doc/device-tree-bindings/pinctrl/intel,apl-pinctrl.txt @@ -0,0 +1,39 @@ +* Intel Apollo Lake pin controller + +The Apollo Lake (APL) pin controller is used to select the function of a pin +and to configure it. + +Required properties: +- compatible: "intel,apl-pinctrl" +- intel,p2sb-port-id: Port ID number within the parent P2SB +- reg: PCI address of the controller + +Please refer to pinctrl-bindings.txt in this directory for details of the +common pinctrl bindings used by client devices. + +Optional subnodes: + +GPIO nodes may be added as children of the pinctrl nodes. See intel,apl-gpio +for the binding. + + +Example: + +... +{ + p2sb: p2sb@d,0 { + reg = <0x02006810 0 0 0 0>; + compatible = "intel,apl-p2sb"; + early-regs = ; + + n { + compatible = "intel,apl-pinctrl"; + intel,p2sb-port-id = ; + gpio_n: gpio-n { + compatible = "intel,apl-gpio"; + #gpio-cells = <2>; + }; + }; + }; +}; +... diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 449f614eb234d41a6d7a966028aba1195dc8cdaa..83e39b9de3838d7c642b775d7c0b2193db63aa3f 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -177,6 +177,14 @@ config PINCTRL_AT91PIO4 This option is to enable the AT91 pinctrl driver for AT91 PIO4 controller which is available on SAMA5D2 SoC. +config PINCTRL_INTEL + bool "Standard Intel pin-control and pin-mux driver" + help + Recent Intel chips such as Apollo Lake (APL) use a common pin control + and GPIO scheme. The settings for this come from an SoC-specific + driver which must be separately enabled. The driver supports setting + pins on start-up and changing the GPIO attributes. + config PINCTRL_PIC32 bool "Microchip PIC32 pin-control and pin-mux driver" depends on DM && MACH_PIC32 @@ -280,6 +288,7 @@ endif source "drivers/pinctrl/broadcom/Kconfig" source "drivers/pinctrl/exynos/Kconfig" +source "drivers/pinctrl/intel/Kconfig" source "drivers/pinctrl/mediatek/Kconfig" source "drivers/pinctrl/meson/Kconfig" source "drivers/pinctrl/mscc/Kconfig" diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index ce0879a2b717c440d294ba279eb55f884b8ec785..4f662c4f6dadeb1a87392455a00acc9fe808a9b1 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -9,6 +9,7 @@ obj-y += nxp/ obj-$(CONFIG_$(SPL_)PINCTRL_ROCKCHIP) += rockchip/ obj-$(CONFIG_ARCH_ASPEED) += aspeed/ obj-$(CONFIG_ARCH_ATH79) += ath79/ +obj-$(CONFIG_PINCTRL_INTEL) += intel/ obj-$(CONFIG_ARCH_MTMIPS) += mtmips/ obj-$(CONFIG_ARCH_RMOBILE) += renesas/ obj-$(CONFIG_PINCTRL_SANDBOX) += pinctrl-sandbox.o diff --git a/drivers/pinctrl/intel/Kconfig b/drivers/pinctrl/intel/Kconfig new file mode 100644 index 0000000000000000000000000000000000000000..c01c6244d99b737acf762acc2c64778697be0682 --- /dev/null +++ b/drivers/pinctrl/intel/Kconfig @@ -0,0 +1,16 @@ +# +# Intel PINCTRL drivers +# + +if PINCTRL_INTEL + +config INTEL_PINCTRL_DUAL_ROUTE_SUPPORT + def_bool y + +config INTEL_PINCTRL_PADCFG_PADTOL + def_bool n + +config INTEL_PINCTRL_IOSTANDBY + def_bool y + +endif diff --git a/drivers/pinctrl/intel/Makefile b/drivers/pinctrl/intel/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..bc1aad2c0678be0744c8f39660bc4e86d5001846 --- /dev/null +++ b/drivers/pinctrl/intel/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright 2019 Google LLC + +obj-y += pinctrl.o diff --git a/drivers/pinctrl/intel/pinctrl.c b/drivers/pinctrl/intel/pinctrl.c new file mode 100644 index 0000000000000000000000000000000000000000..4875a3b0b52eb22b7426adb09eabb82f21de19ed --- /dev/null +++ b/drivers/pinctrl/intel/pinctrl.c @@ -0,0 +1,636 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2017 Intel Corp. + * Copyright 2019 Google LLC + * + * Taken partly from coreboot gpio.c + * + * Pinctrl is modelled as a separate device-tree node and device for each + * 'community' (basically a set of GPIOs). The separate devices work together + * and many functions permit any PINCTRL device to be provided as a parameter, + * since the pad numbering is unique across all devices. + * + * Each pinctrl has a single child GPIO device to handle GPIO access and + * therefore there is a simple GPIO driver included in this file. + */ + +#define LOG_CATEGORY UCLASS_GPIO + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define GPIO_DW_SIZE(x) (sizeof(u32) * (x)) +#define PAD_CFG_OFFSET(x, dw_num) ((x) + GPIO_DW_SIZE(dw_num)) +#define PAD_CFG0_OFFSET(x) PAD_CFG_OFFSET(x, 0) +#define PAD_CFG1_OFFSET(x) PAD_CFG_OFFSET(x, 1) + +#define MISCCFG_GPE0_DW0_SHIFT 8 +#define MISCCFG_GPE0_DW0_MASK (0xf << MISCCFG_GPE0_DW0_SHIFT) +#define MISCCFG_GPE0_DW1_SHIFT 12 +#define MISCCFG_GPE0_DW1_MASK (0xf << MISCCFG_GPE0_DW1_SHIFT) +#define MISCCFG_GPE0_DW2_SHIFT 16 +#define MISCCFG_GPE0_DW2_MASK (0xf << MISCCFG_GPE0_DW2_SHIFT) + +#define GPI_SMI_STS_OFFSET(comm, group) ((comm)->gpi_smi_sts_reg_0 + \ + ((group) * sizeof(u32))) +#define GPI_SMI_EN_OFFSET(comm, group) ((comm)->gpi_smi_en_reg_0 + \ + ((group) * sizeof(u32))) +#define GPI_IS_OFFSET(comm, group) ((comm)->gpi_int_sts_reg_0 + \ + ((group) * sizeof(uint32_t))) +#define GPI_IE_OFFSET(comm, group) ((comm)->gpi_int_en_reg_0 + \ + ((group) * sizeof(uint32_t))) + +/** + * relative_pad_in_comm() - Get the relative position of a GPIO + * + * This finds the position of a GPIO within a community + * + * @comm: Community to search + * @gpio: Pad number to look up (assumed to be valid) + * @return offset, 0 for first GPIO in community + */ +static size_t relative_pad_in_comm(const struct pad_community *comm, + uint gpio) +{ + return gpio - comm->first_pad; +} + +/** + * pinctrl_group_index() - Find group for a a pad + * + * Find the group within the community that the pad is a part of + * + * @comm: Community to search + * @relative_pad: Pad to look up + * @return group number if found (see community_n_groups, etc.), or + * -ESPIPE if no groups, or -ENOENT if not found + */ +static int pinctrl_group_index(const struct pad_community *comm, + uint relative_pad) +{ + int i; + + if (!comm->groups) + return -ESPIPE; + + /* find the base pad number for this pad's group */ + for (i = 0; i < comm->num_groups; i++) { + if (relative_pad >= comm->groups[i].first_pad && + relative_pad < comm->groups[i].first_pad + + comm->groups[i].size) + return i; + } + + return -ENOENT; +} + +static int pinctrl_group_index_scaled(const struct pad_community *comm, + uint relative_pad, size_t scale) +{ + int ret; + + ret = pinctrl_group_index(comm, relative_pad); + if (ret < 0) + return ret; + + return ret * scale; +} + +static int pinctrl_within_group(const struct pad_community *comm, + uint relative_pad) +{ + int ret; + + ret = pinctrl_group_index(comm, relative_pad); + if (ret < 0) + return ret; + + return relative_pad - comm->groups[ret].first_pad; +} + +static u32 pinctrl_bitmask_within_group(const struct pad_community *comm, + uint relative_pad) +{ + return 1U << pinctrl_within_group(comm, relative_pad); +} + +/** + * pinctrl_get_device() - Find the device for a particular pad + * + * Each pinctr, device is attached to one community and this supports a number + * of pads. This function finds the device which controls a particular pad. + * + * @pad: Pad to check + * @devp: Returns the device for that pad + * @return 0 if OK, -ENOTBLK if no device was found for the given pin + */ +static int pinctrl_get_device(uint pad, struct udevice **devp) +{ + struct udevice *dev; + + /* + * We have to probe each one of these since the community link is only + * attached in intel_pinctrl_ofdata_to_platdata(). + */ + uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) { + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + const struct pad_community *comm = priv->comm; + + if (pad >= comm->first_pad && pad <= comm->last_pad) { + *devp = dev; + return 0; + } + } + printf("pad %d not found\n", pad); + + return -ENOTBLK; +} + +int intel_pinctrl_get_pad(uint pad, struct udevice **devp, uint *offsetp) +{ + const struct pad_community *comm; + struct intel_pinctrl_priv *priv; + struct udevice *dev; + int ret; + + ret = pinctrl_get_device(pad, &dev); + if (ret) + return log_msg_ret("pad", ret); + priv = dev_get_priv(dev); + comm = priv->comm; + *devp = dev; + *offsetp = relative_pad_in_comm(comm, pad); + + return 0; +} + +static int pinctrl_configure_owner(struct udevice *dev, + const struct pad_config *cfg, + const struct pad_community *comm) +{ + u32 hostsw_own; + u16 hostsw_own_offset; + int pin; + int ret; + + pin = relative_pad_in_comm(comm, cfg->pad); + + /* + * Based on the gpio pin number configure the corresponding bit in + * HOSTSW_OWN register. Value of 0x1 indicates GPIO Driver onwership. + */ + hostsw_own_offset = comm->host_own_reg_0; + ret = pinctrl_group_index_scaled(comm, pin, sizeof(u32)); + if (ret < 0) + return ret; + hostsw_own_offset += ret; + + hostsw_own = pcr_read32(dev, hostsw_own_offset); + + /* + *The 4th bit in pad_config 1 (RO) is used to indicate if the pad + * needs GPIO driver ownership. Set the bit if GPIO driver ownership + * requested, otherwise clear the bit. + */ + if (cfg->pad_config[1] & PAD_CFG1_GPIO_DRIVER) + hostsw_own |= pinctrl_bitmask_within_group(comm, pin); + else + hostsw_own &= ~pinctrl_bitmask_within_group(comm, pin); + + pcr_write32(dev, hostsw_own_offset, hostsw_own); + + return 0; +} + +static int gpi_enable_smi(struct udevice *dev, const struct pad_config *cfg, + const struct pad_community *comm) +{ + u32 value; + u16 sts_reg; + u16 en_reg; + int group; + int pin; + int ret; + + if ((cfg->pad_config[0] & PAD_CFG0_ROUTE_SMI) != PAD_CFG0_ROUTE_SMI) + return 0; + + pin = relative_pad_in_comm(comm, cfg->pad); + ret = pinctrl_group_index(comm, pin); + if (ret < 0) + return ret; + group = ret; + + sts_reg = GPI_SMI_STS_OFFSET(comm, group); + value = pcr_read32(dev, sts_reg); + /* Write back 1 to reset the sts bits */ + pcr_write32(dev, sts_reg, value); + + /* Set enable bits */ + en_reg = GPI_SMI_EN_OFFSET(comm, group); + pcr_setbits32(dev, en_reg, pinctrl_bitmask_within_group(comm, pin)); + + return 0; +} + +static int pinctrl_configure_itss(struct udevice *dev, + const struct pad_config *cfg, + uint pad_cfg_offset) +{ + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + + if (!priv->itss_pol_cfg) + return -ENOSYS; + + int irq; + + /* + * Set up ITSS polarity if pad is routed to APIC. + * + * The ITSS takes only active high interrupt signals. Therefore, + * if the pad configuration indicates an inversion assume the + * intent is for the ITSS polarity. Before forwarding on the + * request to the APIC there's an inversion setting for how the + * signal is forwarded to the APIC. Honor the inversion setting + * in the GPIO pad configuration so that a hardware active low + * signal looks that way to the APIC (double inversion). + */ + if (!(cfg->pad_config[0] & PAD_CFG0_ROUTE_IOAPIC)) + return 0; + + irq = pcr_read32(dev, PAD_CFG1_OFFSET(pad_cfg_offset)); + irq &= PAD_CFG1_IRQ_MASK; + if (!irq) { + log_err("GPIO %u doesn't support APIC routing\n", cfg->pad); + + return -EPROTONOSUPPORT; + } + irq_set_polarity(priv->itss, irq, + cfg->pad_config[0] & PAD_CFG0_RX_POL_INVERT); + + return 0; +} + +/* Number of DWx config registers can be different for different SOCs */ +static uint pad_config_offset(struct intel_pinctrl_priv *priv, uint pad) +{ + const struct pad_community *comm = priv->comm; + size_t offset; + + offset = relative_pad_in_comm(comm, pad); + offset *= GPIO_DW_SIZE(priv->num_cfgs); + + return offset + comm->pad_cfg_base; +} + +static int pinctrl_pad_reset_config_override(const struct pad_community *comm, + u32 config_value) +{ + const struct reset_mapping *rst_map = comm->reset_map; + int i; + + /* Logical reset values equal chipset values */ + if (!rst_map || !comm->num_reset_vals) + return config_value; + + for (i = 0; i < comm->num_reset_vals; i++, rst_map++) { + if ((config_value & PAD_CFG0_RESET_MASK) == rst_map->logical) { + config_value &= ~PAD_CFG0_RESET_MASK; + config_value |= rst_map->chipset; + + return config_value; + } + } + log_err("Logical-to-Chipset mapping not found\n"); + + return -ENOENT; +} + +static const int mask[4] = { + PAD_CFG0_TX_STATE | + PAD_CFG0_TX_DISABLE | PAD_CFG0_RX_DISABLE | PAD_CFG0_MODE_MASK | + PAD_CFG0_ROUTE_MASK | PAD_CFG0_RXTENCFG_MASK | + PAD_CFG0_RXINV_MASK | PAD_CFG0_PREGFRXSEL | + PAD_CFG0_TRIG_MASK | PAD_CFG0_RXRAW1_MASK | + PAD_CFG0_RXPADSTSEL_MASK | PAD_CFG0_RESET_MASK, + +#ifdef CONFIG_INTEL_PINCTRL_IOSTANDBY + PAD_CFG1_IOSTERM_MASK | PAD_CFG1_PULL_MASK | PAD_CFG1_IOSSTATE_MASK, +#else + PAD_CFG1_IOSTERM_MASK | PAD_CFG1_PULL_MASK, +#endif + + PAD_CFG2_DEBOUNCE_MASK, + + 0, +}; + +/** + * pinctrl_configure_pad() - Configure a pad + * + * @dev: Pinctrl device containing the pad (see pinctrl_get_device()) + * @cfg: Configuration to apply + * @return 0 if OK, -ve on error + */ +static int pinctrl_configure_pad(struct udevice *dev, + const struct pad_config *cfg) +{ + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + const struct pad_community *comm = priv->comm; + uint config_offset; + u32 pad_conf, soc_pad_conf; + int ret; + int i; + + if (IS_ERR(comm)) + return PTR_ERR(comm); + config_offset = pad_config_offset(priv, cfg->pad); + for (i = 0; i < priv->num_cfgs; i++) { + pad_conf = pcr_read32(dev, PAD_CFG_OFFSET(config_offset, i)); + + soc_pad_conf = cfg->pad_config[i]; + if (i == 0) { + ret = pinctrl_pad_reset_config_override(comm, + soc_pad_conf); + if (ret < 0) + return ret; + soc_pad_conf = ret; + } + soc_pad_conf &= mask[i]; + soc_pad_conf |= pad_conf & ~mask[i]; + + log_debug("pinctrl_padcfg [0x%02x, %02zd] DW%d [0x%08x : 0x%08x : 0x%08x]\n", + comm->port, relative_pad_in_comm(comm, cfg->pad), i, + pad_conf,/* old value */ + /* value passed from pinctrl table */ + cfg->pad_config[i], + soc_pad_conf); /*new value*/ + pcr_write32(dev, PAD_CFG_OFFSET(config_offset, i), + soc_pad_conf); + } + ret = pinctrl_configure_itss(dev, cfg, config_offset); + if (ret && ret != -ENOSYS) + return log_msg_ret("itss config failed", ret); + ret = pinctrl_configure_owner(dev, cfg, comm); + if (ret) + return ret; + ret = gpi_enable_smi(dev, cfg, comm); + if (ret) + return ret; + + return 0; +} + +u32 intel_pinctrl_get_config_reg_addr(struct udevice *dev, uint offset) +{ + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + const struct pad_community *comm = priv->comm; + uint config_offset; + + assert(device_get_uclass_id(dev) == UCLASS_PINCTRL); + config_offset = comm->pad_cfg_base + offset * + GPIO_DW_SIZE(priv->num_cfgs); + + return config_offset; +} + +u32 intel_pinctrl_get_config_reg(struct udevice *dev, uint offset) +{ + uint config_offset = intel_pinctrl_get_config_reg_addr(dev, offset); + + return pcr_read32(dev, config_offset); +} + +int intel_pinctrl_get_acpi_pin(struct udevice *dev, uint offset) +{ + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + const struct pad_community *comm = priv->comm; + int group; + + group = pinctrl_group_index(comm, offset); + + /* If pad base is not set then use GPIO number as ACPI pin number */ + if (comm->groups[group].acpi_pad_base == PAD_BASE_NONE) + return comm->first_pad + offset; + + /* + * If this group has a non-zero pad base then compute the ACPI pin + * number from the pad base and the relative pad in the group. + */ + return comm->groups[group].acpi_pad_base + + pinctrl_within_group(comm, offset); +} + +int pinctrl_route_gpe(struct udevice *itss, uint gpe0b, uint gpe0c, uint gpe0d) +{ + struct udevice *pinctrl_dev; + u32 misccfg_value; + u32 misccfg_clr; + int ret; + + /* + * Get the group here for community specific MISCCFG register. + * If any of these returns -1 then there is some error in devicetree + * where the group is probably hardcoded and does not comply with the + * PMC group defines. So we return from here and MISCFG is set to + * default. + */ + ret = irq_route_pmc_gpio_gpe(itss, gpe0b); + if (ret) + return ret; + gpe0b = ret; + + ret = irq_route_pmc_gpio_gpe(itss, gpe0c); + if (ret) + return ret; + gpe0c = ret; + + ret = irq_route_pmc_gpio_gpe(itss, gpe0d); + if (ret) + return ret; + gpe0d = ret; + + misccfg_value = gpe0b << MISCCFG_GPE0_DW0_SHIFT; + misccfg_value |= gpe0c << MISCCFG_GPE0_DW1_SHIFT; + misccfg_value |= gpe0d << MISCCFG_GPE0_DW2_SHIFT; + + /* Program GPIO_MISCCFG */ + misccfg_clr = MISCCFG_GPE0_DW2_MASK | MISCCFG_GPE0_DW1_MASK | + MISCCFG_GPE0_DW0_MASK; + + log_debug("misccfg_clr:%x misccfg_value:%x\n", misccfg_clr, + misccfg_value); + uclass_foreach_dev_probe(UCLASS_PINCTRL, pinctrl_dev) { + pcr_clrsetbits32(pinctrl_dev, GPIO_MISCCFG, misccfg_clr, + misccfg_value); + } + + return 0; +} + +int pinctrl_gpi_clear_int_cfg(void) +{ + struct udevice *dev; + struct uclass *uc; + int ret; + + ret = uclass_get(UCLASS_PINCTRL, &uc); + if (ret) + return log_msg_ret("pinctrl uc", ret); + uclass_foreach_dev(dev, uc) { + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + const struct pad_community *comm = priv->comm; + uint sts_value; + int group; + + for (group = 0; group < comm->num_gpi_regs; group++) { + /* Clear the enable register */ + pcr_write32(dev, GPI_IE_OFFSET(comm, group), 0); + + /* Read and clear the set status register bits*/ + sts_value = pcr_read32(dev, + GPI_IS_OFFSET(comm, group)); + pcr_write32(dev, GPI_IS_OFFSET(comm, group), sts_value); + } + } + + return 0; +} + +int pinctrl_config_pads(struct udevice *dev, u32 *pads, int pads_count) +{ + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + const u32 *ptr; + int i; + + log_debug("%s: pads_count=%d\n", __func__, pads_count); + for (ptr = pads, i = 0; i < pads_count; + ptr += 1 + priv->num_cfgs, i++) { + struct udevice *pad_dev = NULL; + struct pad_config *cfg; + int ret; + + cfg = (struct pad_config *)ptr; + ret = pinctrl_get_device(cfg->pad, &pad_dev); + if (ret) + return ret; + ret = pinctrl_configure_pad(pad_dev, cfg); + if (ret) + return ret; + } + + return 0; +} + +int pinctrl_read_pads(struct udevice *dev, ofnode node, const char *prop, + u32 **padsp, int *pad_countp) +{ + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + u32 *pads; + int size; + int ret; + + *padsp = NULL; + *pad_countp = 0; + size = ofnode_read_size(node, prop); + if (size < 0) + return 0; + + pads = malloc(size); + if (!pads) + return -ENOMEM; + size /= sizeof(fdt32_t); + ret = ofnode_read_u32_array(node, prop, pads, size); + if (ret) { + free(pads); + return ret; + } + *pad_countp = size / (1 + priv->num_cfgs); + *padsp = pads; + + return 0; +} + +int pinctrl_count_pads(struct udevice *dev, u32 *pads, int size) +{ + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + int count = 0; + int i; + + for (i = 0; i < size;) { + u32 val; + int j; + + for (val = j = 0; j < priv->num_cfgs + 1; j++) + val |= pads[i + j]; + if (!val) + break; + count++; + i += priv->num_cfgs + 1; + } + + return count; +} + +int pinctrl_config_pads_for_node(struct udevice *dev, ofnode node) +{ + int pads_count; + u32 *pads; + int ret; + + if (device_get_uclass_id(dev) != UCLASS_PINCTRL) + return log_msg_ret("uclass", -EPROTONOSUPPORT); + ret = pinctrl_read_pads(dev, node, "pads", &pads, &pads_count); + if (ret) + return log_msg_ret("no pads", ret); + ret = pinctrl_config_pads(dev, pads, pads_count); + free(pads); + if (ret) + return log_msg_ret("pad config", ret); + + return 0; +} + +int intel_pinctrl_ofdata_to_platdata(struct udevice *dev, + const struct pad_community *comm, + int num_cfgs) +{ + struct p2sb_child_platdata *pplat = dev_get_parent_platdata(dev); + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + int ret; + + if (!comm) { + log_err("Cannot find community for pid %d\n", pplat->pid); + return -EDOM; + } + ret = uclass_first_device_err(UCLASS_IRQ, &priv->itss); + if (ret) + return log_msg_ret("Cannot find ITSS", ret); + priv->comm = comm; + priv->num_cfgs = num_cfgs; + + return 0; +} + +int intel_pinctrl_probe(struct udevice *dev) +{ + struct intel_pinctrl_priv *priv = dev_get_priv(dev); + + priv->itss_pol_cfg = true; + + return 0; +} + +const struct pinctrl_ops intel_pinctrl_ops = { + /* No operations are supported, but DM expects this to be present */ +};