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pinctrl-cherryview.c
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// SPDX-License-Identifier: GPL-2.0
/*
* Cherryview/Braswell pinctrl driver
*
* Copyright (C) 2014, 2020 Intel Corporation
* Author: Mika Westerberg <mika.westerberg@linux.intel.com>
*
* This driver is based on the original Cherryview GPIO driver by
* Ning Li <ning.li@intel.com>
* Alan Cox <alan@linux.intel.com>
*/
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/gpio/driver.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinconf-generic.h>
#include "pinctrl-intel.h"
#define CHV_INTSTAT 0x300
#define CHV_INTMASK 0x380
#define FAMILY_PAD_REGS_OFF 0x4400
#define FAMILY_PAD_REGS_SIZE 0x400
#define MAX_FAMILY_PAD_GPIO_NO 15
#define GPIO_REGS_SIZE 8
#define CHV_PADCTRL0 0x000
#define CHV_PADCTRL0_INTSEL_SHIFT 28
#define CHV_PADCTRL0_INTSEL_MASK GENMASK(31, 28)
#define CHV_PADCTRL0_TERM_UP BIT(23)
#define CHV_PADCTRL0_TERM_SHIFT 20
#define CHV_PADCTRL0_TERM_MASK GENMASK(22, 20)
#define CHV_PADCTRL0_TERM_20K 1
#define CHV_PADCTRL0_TERM_5K 2
#define CHV_PADCTRL0_TERM_1K 4
#define CHV_PADCTRL0_PMODE_SHIFT 16
#define CHV_PADCTRL0_PMODE_MASK GENMASK(19, 16)
#define CHV_PADCTRL0_GPIOEN BIT(15)
#define CHV_PADCTRL0_GPIOCFG_SHIFT 8
#define CHV_PADCTRL0_GPIOCFG_MASK GENMASK(10, 8)
#define CHV_PADCTRL0_GPIOCFG_GPIO 0
#define CHV_PADCTRL0_GPIOCFG_GPO 1
#define CHV_PADCTRL0_GPIOCFG_GPI 2
#define CHV_PADCTRL0_GPIOCFG_HIZ 3
#define CHV_PADCTRL0_GPIOTXSTATE BIT(1)
#define CHV_PADCTRL0_GPIORXSTATE BIT(0)
#define CHV_PADCTRL1 0x004
#define CHV_PADCTRL1_CFGLOCK BIT(31)
#define CHV_PADCTRL1_INVRXTX_SHIFT 4
#define CHV_PADCTRL1_INVRXTX_MASK GENMASK(7, 4)
#define CHV_PADCTRL1_INVRXTX_TXDATA BIT(7)
#define CHV_PADCTRL1_INVRXTX_RXDATA BIT(6)
#define CHV_PADCTRL1_INVRXTX_TXENABLE BIT(5)
#define CHV_PADCTRL1_ODEN BIT(3)
#define CHV_PADCTRL1_INTWAKECFG_MASK GENMASK(2, 0)
#define CHV_PADCTRL1_INTWAKECFG_FALLING 1
#define CHV_PADCTRL1_INTWAKECFG_RISING 2
#define CHV_PADCTRL1_INTWAKECFG_BOTH 3
#define CHV_PADCTRL1_INTWAKECFG_LEVEL 4
struct intel_pad_context {
u32 padctrl0;
u32 padctrl1;
};
#define CHV_INVALID_HWIRQ ((unsigned int)INVALID_HWIRQ)
/**
* struct intel_community_context - community context for Cherryview
* @intr_lines: Mapping between 16 HW interrupt wires and GPIO offset (in GPIO number space)
* @saved_intmask: Interrupt mask saved for system sleep
*/
struct intel_community_context {
unsigned int intr_lines[16];
u32 saved_intmask;
};
#define PINMODE_INVERT_OE BIT(15)
#define PINMODE(m, i) ((m) | ((i) * PINMODE_INVERT_OE))
#define CHV_GPP(start, end) \
{ \
.base = (start), \
.size = (end) - (start) + 1, \
}
#define CHV_COMMUNITY(g, i, a) \
{ \
.gpps = (g), \
.ngpps = ARRAY_SIZE(g), \
.nirqs = (i), \
.acpi_space_id = (a), \
}
static const struct pinctrl_pin_desc southwest_pins[] = {
PINCTRL_PIN(0, "FST_SPI_D2"),
PINCTRL_PIN(1, "FST_SPI_D0"),
PINCTRL_PIN(2, "FST_SPI_CLK"),
PINCTRL_PIN(3, "FST_SPI_D3"),
PINCTRL_PIN(4, "FST_SPI_CS1_B"),
PINCTRL_PIN(5, "FST_SPI_D1"),
PINCTRL_PIN(6, "FST_SPI_CS0_B"),
PINCTRL_PIN(7, "FST_SPI_CS2_B"),
PINCTRL_PIN(15, "UART1_RTS_B"),
PINCTRL_PIN(16, "UART1_RXD"),
PINCTRL_PIN(17, "UART2_RXD"),
PINCTRL_PIN(18, "UART1_CTS_B"),
PINCTRL_PIN(19, "UART2_RTS_B"),
PINCTRL_PIN(20, "UART1_TXD"),
PINCTRL_PIN(21, "UART2_TXD"),
PINCTRL_PIN(22, "UART2_CTS_B"),
PINCTRL_PIN(30, "MF_HDA_CLK"),
PINCTRL_PIN(31, "MF_HDA_RSTB"),
PINCTRL_PIN(32, "MF_HDA_SDIO"),
PINCTRL_PIN(33, "MF_HDA_SDO"),
PINCTRL_PIN(34, "MF_HDA_DOCKRSTB"),
PINCTRL_PIN(35, "MF_HDA_SYNC"),
PINCTRL_PIN(36, "MF_HDA_SDI1"),
PINCTRL_PIN(37, "MF_HDA_DOCKENB"),
PINCTRL_PIN(45, "I2C5_SDA"),
PINCTRL_PIN(46, "I2C4_SDA"),
PINCTRL_PIN(47, "I2C6_SDA"),
PINCTRL_PIN(48, "I2C5_SCL"),
PINCTRL_PIN(49, "I2C_NFC_SDA"),
PINCTRL_PIN(50, "I2C4_SCL"),
PINCTRL_PIN(51, "I2C6_SCL"),
PINCTRL_PIN(52, "I2C_NFC_SCL"),
PINCTRL_PIN(60, "I2C1_SDA"),
PINCTRL_PIN(61, "I2C0_SDA"),
PINCTRL_PIN(62, "I2C2_SDA"),
PINCTRL_PIN(63, "I2C1_SCL"),
PINCTRL_PIN(64, "I2C3_SDA"),
PINCTRL_PIN(65, "I2C0_SCL"),
PINCTRL_PIN(66, "I2C2_SCL"),
PINCTRL_PIN(67, "I2C3_SCL"),
PINCTRL_PIN(75, "SATA_GP0"),
PINCTRL_PIN(76, "SATA_GP1"),
PINCTRL_PIN(77, "SATA_LEDN"),
PINCTRL_PIN(78, "SATA_GP2"),
PINCTRL_PIN(79, "MF_SMB_ALERTB"),
PINCTRL_PIN(80, "SATA_GP3"),
PINCTRL_PIN(81, "MF_SMB_CLK"),
PINCTRL_PIN(82, "MF_SMB_DATA"),
PINCTRL_PIN(90, "PCIE_CLKREQ0B"),
PINCTRL_PIN(91, "PCIE_CLKREQ1B"),
PINCTRL_PIN(92, "GP_SSP_2_CLK"),
PINCTRL_PIN(93, "PCIE_CLKREQ2B"),
PINCTRL_PIN(94, "GP_SSP_2_RXD"),
PINCTRL_PIN(95, "PCIE_CLKREQ3B"),
PINCTRL_PIN(96, "GP_SSP_2_FS"),
PINCTRL_PIN(97, "GP_SSP_2_TXD"),
};
static const unsigned southwest_uart0_pins[] = { 16, 20 };
static const unsigned southwest_uart1_pins[] = { 15, 16, 18, 20 };
static const unsigned southwest_uart2_pins[] = { 17, 19, 21, 22 };
static const unsigned southwest_i2c0_pins[] = { 61, 65 };
static const unsigned southwest_hda_pins[] = { 30, 31, 32, 33, 34, 35, 36, 37 };
static const unsigned southwest_lpe_pins[] = {
30, 31, 32, 33, 34, 35, 36, 37, 92, 94, 96, 97,
};
static const unsigned southwest_i2c1_pins[] = { 60, 63 };
static const unsigned southwest_i2c2_pins[] = { 62, 66 };
static const unsigned southwest_i2c3_pins[] = { 64, 67 };
static const unsigned southwest_i2c4_pins[] = { 46, 50 };
static const unsigned southwest_i2c5_pins[] = { 45, 48 };
static const unsigned southwest_i2c6_pins[] = { 47, 51 };
static const unsigned southwest_i2c_nfc_pins[] = { 49, 52 };
static const unsigned southwest_spi3_pins[] = { 76, 79, 80, 81, 82 };
/* Some of LPE I2S TXD pins need to have OE inversion set */
static const unsigned int southwest_lpe_altfuncs[] = {
PINMODE(1, 1), PINMODE(1, 0), PINMODE(1, 0), PINMODE(1, 0), /* 30, 31, 32, 33 */
PINMODE(1, 1), PINMODE(1, 0), PINMODE(1, 0), PINMODE(1, 0), /* 34, 35, 36, 37 */
PINMODE(1, 0), PINMODE(1, 0), PINMODE(1, 0), PINMODE(1, 1), /* 92, 94, 96, 97 */
};
/*
* Two spi3 chipselects are available in different mode than the main spi3
* functionality, which is using mode 2.
*/
static const unsigned int southwest_spi3_altfuncs[] = {
PINMODE(3, 0), PINMODE(2, 0), PINMODE(3, 0), PINMODE(2, 0), /* 76, 79, 80, 81 */
PINMODE(2, 0), /* 82 */
};
static const struct intel_pingroup southwest_groups[] = {
PIN_GROUP("uart0_grp", southwest_uart0_pins, PINMODE(2, 0)),
PIN_GROUP("uart1_grp", southwest_uart1_pins, PINMODE(1, 0)),
PIN_GROUP("uart2_grp", southwest_uart2_pins, PINMODE(1, 0)),
PIN_GROUP("hda_grp", southwest_hda_pins, PINMODE(2, 0)),
PIN_GROUP("i2c0_grp", southwest_i2c0_pins, PINMODE(1, 1)),
PIN_GROUP("i2c1_grp", southwest_i2c1_pins, PINMODE(1, 1)),
PIN_GROUP("i2c2_grp", southwest_i2c2_pins, PINMODE(1, 1)),
PIN_GROUP("i2c3_grp", southwest_i2c3_pins, PINMODE(1, 1)),
PIN_GROUP("i2c4_grp", southwest_i2c4_pins, PINMODE(1, 1)),
PIN_GROUP("i2c5_grp", southwest_i2c5_pins, PINMODE(1, 1)),
PIN_GROUP("i2c6_grp", southwest_i2c6_pins, PINMODE(1, 1)),
PIN_GROUP("i2c_nfc_grp", southwest_i2c_nfc_pins, PINMODE(2, 1)),
PIN_GROUP("lpe_grp", southwest_lpe_pins, southwest_lpe_altfuncs),
PIN_GROUP("spi3_grp", southwest_spi3_pins, southwest_spi3_altfuncs),
};
static const char * const southwest_uart0_groups[] = { "uart0_grp" };
static const char * const southwest_uart1_groups[] = { "uart1_grp" };
static const char * const southwest_uart2_groups[] = { "uart2_grp" };
static const char * const southwest_hda_groups[] = { "hda_grp" };
static const char * const southwest_lpe_groups[] = { "lpe_grp" };
static const char * const southwest_i2c0_groups[] = { "i2c0_grp" };
static const char * const southwest_i2c1_groups[] = { "i2c1_grp" };
static const char * const southwest_i2c2_groups[] = { "i2c2_grp" };
static const char * const southwest_i2c3_groups[] = { "i2c3_grp" };
static const char * const southwest_i2c4_groups[] = { "i2c4_grp" };
static const char * const southwest_i2c5_groups[] = { "i2c5_grp" };
static const char * const southwest_i2c6_groups[] = { "i2c6_grp" };
static const char * const southwest_i2c_nfc_groups[] = { "i2c_nfc_grp" };
static const char * const southwest_spi3_groups[] = { "spi3_grp" };
/*
* Only do pinmuxing for certain LPSS devices for now. Rest of the pins are
* enabled only as GPIOs.
*/
static const struct intel_function southwest_functions[] = {
FUNCTION("uart0", southwest_uart0_groups),
FUNCTION("uart1", southwest_uart1_groups),
FUNCTION("uart2", southwest_uart2_groups),
FUNCTION("hda", southwest_hda_groups),
FUNCTION("lpe", southwest_lpe_groups),
FUNCTION("i2c0", southwest_i2c0_groups),
FUNCTION("i2c1", southwest_i2c1_groups),
FUNCTION("i2c2", southwest_i2c2_groups),
FUNCTION("i2c3", southwest_i2c3_groups),
FUNCTION("i2c4", southwest_i2c4_groups),
FUNCTION("i2c5", southwest_i2c5_groups),
FUNCTION("i2c6", southwest_i2c6_groups),
FUNCTION("i2c_nfc", southwest_i2c_nfc_groups),
FUNCTION("spi3", southwest_spi3_groups),
};
static const struct intel_padgroup southwest_gpps[] = {
CHV_GPP(0, 7),
CHV_GPP(15, 22),
CHV_GPP(30, 37),
CHV_GPP(45, 52),
CHV_GPP(60, 67),
CHV_GPP(75, 82),
CHV_GPP(90, 97),
};
/*
* Southwest community can generate GPIO interrupts only for the first 8
* interrupts. The upper half (8-15) can only be used to trigger GPEs.
*/
static const struct intel_community southwest_communities[] = {
CHV_COMMUNITY(southwest_gpps, 8, 0x91),
};
static const struct intel_pinctrl_soc_data southwest_soc_data = {
.uid = "1",
.pins = southwest_pins,
.npins = ARRAY_SIZE(southwest_pins),
.groups = southwest_groups,
.ngroups = ARRAY_SIZE(southwest_groups),
.functions = southwest_functions,
.nfunctions = ARRAY_SIZE(southwest_functions),
.communities = southwest_communities,
.ncommunities = ARRAY_SIZE(southwest_communities),
};
static const struct pinctrl_pin_desc north_pins[] = {
PINCTRL_PIN(0, "GPIO_DFX_0"),
PINCTRL_PIN(1, "GPIO_DFX_3"),
PINCTRL_PIN(2, "GPIO_DFX_7"),
PINCTRL_PIN(3, "GPIO_DFX_1"),
PINCTRL_PIN(4, "GPIO_DFX_5"),
PINCTRL_PIN(5, "GPIO_DFX_4"),
PINCTRL_PIN(6, "GPIO_DFX_8"),
PINCTRL_PIN(7, "GPIO_DFX_2"),
PINCTRL_PIN(8, "GPIO_DFX_6"),
PINCTRL_PIN(15, "GPIO_SUS0"),
PINCTRL_PIN(16, "SEC_GPIO_SUS10"),
PINCTRL_PIN(17, "GPIO_SUS3"),
PINCTRL_PIN(18, "GPIO_SUS7"),
PINCTRL_PIN(19, "GPIO_SUS1"),
PINCTRL_PIN(20, "GPIO_SUS5"),
PINCTRL_PIN(21, "SEC_GPIO_SUS11"),
PINCTRL_PIN(22, "GPIO_SUS4"),
PINCTRL_PIN(23, "SEC_GPIO_SUS8"),
PINCTRL_PIN(24, "GPIO_SUS2"),
PINCTRL_PIN(25, "GPIO_SUS6"),
PINCTRL_PIN(26, "CX_PREQ_B"),
PINCTRL_PIN(27, "SEC_GPIO_SUS9"),
PINCTRL_PIN(30, "TRST_B"),
PINCTRL_PIN(31, "TCK"),
PINCTRL_PIN(32, "PROCHOT_B"),
PINCTRL_PIN(33, "SVIDO_DATA"),
PINCTRL_PIN(34, "TMS"),
PINCTRL_PIN(35, "CX_PRDY_B_2"),
PINCTRL_PIN(36, "TDO_2"),
PINCTRL_PIN(37, "CX_PRDY_B"),
PINCTRL_PIN(38, "SVIDO_ALERT_B"),
PINCTRL_PIN(39, "TDO"),
PINCTRL_PIN(40, "SVIDO_CLK"),
PINCTRL_PIN(41, "TDI"),
PINCTRL_PIN(45, "GP_CAMERASB_05"),
PINCTRL_PIN(46, "GP_CAMERASB_02"),
PINCTRL_PIN(47, "GP_CAMERASB_08"),
PINCTRL_PIN(48, "GP_CAMERASB_00"),
PINCTRL_PIN(49, "GP_CAMERASB_06"),
PINCTRL_PIN(50, "GP_CAMERASB_10"),
PINCTRL_PIN(51, "GP_CAMERASB_03"),
PINCTRL_PIN(52, "GP_CAMERASB_09"),
PINCTRL_PIN(53, "GP_CAMERASB_01"),
PINCTRL_PIN(54, "GP_CAMERASB_07"),
PINCTRL_PIN(55, "GP_CAMERASB_11"),
PINCTRL_PIN(56, "GP_CAMERASB_04"),
PINCTRL_PIN(60, "PANEL0_BKLTEN"),
PINCTRL_PIN(61, "HV_DDI0_HPD"),
PINCTRL_PIN(62, "HV_DDI2_DDC_SDA"),
PINCTRL_PIN(63, "PANEL1_BKLTCTL"),
PINCTRL_PIN(64, "HV_DDI1_HPD"),
PINCTRL_PIN(65, "PANEL0_BKLTCTL"),
PINCTRL_PIN(66, "HV_DDI0_DDC_SDA"),
PINCTRL_PIN(67, "HV_DDI2_DDC_SCL"),
PINCTRL_PIN(68, "HV_DDI2_HPD"),
PINCTRL_PIN(69, "PANEL1_VDDEN"),
PINCTRL_PIN(70, "PANEL1_BKLTEN"),
PINCTRL_PIN(71, "HV_DDI0_DDC_SCL"),
PINCTRL_PIN(72, "PANEL0_VDDEN"),
};
static const struct intel_padgroup north_gpps[] = {
CHV_GPP(0, 8),
CHV_GPP(15, 27),
CHV_GPP(30, 41),
CHV_GPP(45, 56),
CHV_GPP(60, 72),
};
/*
* North community can generate GPIO interrupts only for the first 8
* interrupts. The upper half (8-15) can only be used to trigger GPEs.
*/
static const struct intel_community north_communities[] = {
CHV_COMMUNITY(north_gpps, 8, 0x92),
};
static const struct intel_pinctrl_soc_data north_soc_data = {
.uid = "2",
.pins = north_pins,
.npins = ARRAY_SIZE(north_pins),
.communities = north_communities,
.ncommunities = ARRAY_SIZE(north_communities),
};
static const struct pinctrl_pin_desc east_pins[] = {
PINCTRL_PIN(0, "PMU_SLP_S3_B"),
PINCTRL_PIN(1, "PMU_BATLOW_B"),
PINCTRL_PIN(2, "SUS_STAT_B"),
PINCTRL_PIN(3, "PMU_SLP_S0IX_B"),
PINCTRL_PIN(4, "PMU_AC_PRESENT"),
PINCTRL_PIN(5, "PMU_PLTRST_B"),
PINCTRL_PIN(6, "PMU_SUSCLK"),
PINCTRL_PIN(7, "PMU_SLP_LAN_B"),
PINCTRL_PIN(8, "PMU_PWRBTN_B"),
PINCTRL_PIN(9, "PMU_SLP_S4_B"),
PINCTRL_PIN(10, "PMU_WAKE_B"),
PINCTRL_PIN(11, "PMU_WAKE_LAN_B"),
PINCTRL_PIN(15, "MF_ISH_GPIO_3"),
PINCTRL_PIN(16, "MF_ISH_GPIO_7"),
PINCTRL_PIN(17, "MF_ISH_I2C1_SCL"),
PINCTRL_PIN(18, "MF_ISH_GPIO_1"),
PINCTRL_PIN(19, "MF_ISH_GPIO_5"),
PINCTRL_PIN(20, "MF_ISH_GPIO_9"),
PINCTRL_PIN(21, "MF_ISH_GPIO_0"),
PINCTRL_PIN(22, "MF_ISH_GPIO_4"),
PINCTRL_PIN(23, "MF_ISH_GPIO_8"),
PINCTRL_PIN(24, "MF_ISH_GPIO_2"),
PINCTRL_PIN(25, "MF_ISH_GPIO_6"),
PINCTRL_PIN(26, "MF_ISH_I2C1_SDA"),
};
static const struct intel_padgroup east_gpps[] = {
CHV_GPP(0, 11),
CHV_GPP(15, 26),
};
static const struct intel_community east_communities[] = {
CHV_COMMUNITY(east_gpps, 16, 0x93),
};
static const struct intel_pinctrl_soc_data east_soc_data = {
.uid = "3",
.pins = east_pins,
.npins = ARRAY_SIZE(east_pins),
.communities = east_communities,
.ncommunities = ARRAY_SIZE(east_communities),
};
static const struct pinctrl_pin_desc southeast_pins[] = {
PINCTRL_PIN(0, "MF_PLT_CLK0"),
PINCTRL_PIN(1, "PWM1"),
PINCTRL_PIN(2, "MF_PLT_CLK1"),
PINCTRL_PIN(3, "MF_PLT_CLK4"),
PINCTRL_PIN(4, "MF_PLT_CLK3"),
PINCTRL_PIN(5, "PWM0"),
PINCTRL_PIN(6, "MF_PLT_CLK5"),
PINCTRL_PIN(7, "MF_PLT_CLK2"),
PINCTRL_PIN(15, "SDMMC2_D3_CD_B"),
PINCTRL_PIN(16, "SDMMC1_CLK"),
PINCTRL_PIN(17, "SDMMC1_D0"),
PINCTRL_PIN(18, "SDMMC2_D1"),
PINCTRL_PIN(19, "SDMMC2_CLK"),
PINCTRL_PIN(20, "SDMMC1_D2"),
PINCTRL_PIN(21, "SDMMC2_D2"),
PINCTRL_PIN(22, "SDMMC2_CMD"),
PINCTRL_PIN(23, "SDMMC1_CMD"),
PINCTRL_PIN(24, "SDMMC1_D1"),
PINCTRL_PIN(25, "SDMMC2_D0"),
PINCTRL_PIN(26, "SDMMC1_D3_CD_B"),
PINCTRL_PIN(30, "SDMMC3_D1"),
PINCTRL_PIN(31, "SDMMC3_CLK"),
PINCTRL_PIN(32, "SDMMC3_D3"),
PINCTRL_PIN(33, "SDMMC3_D2"),
PINCTRL_PIN(34, "SDMMC3_CMD"),
PINCTRL_PIN(35, "SDMMC3_D0"),
PINCTRL_PIN(45, "MF_LPC_AD2"),
PINCTRL_PIN(46, "LPC_CLKRUNB"),
PINCTRL_PIN(47, "MF_LPC_AD0"),
PINCTRL_PIN(48, "LPC_FRAMEB"),
PINCTRL_PIN(49, "MF_LPC_CLKOUT1"),
PINCTRL_PIN(50, "MF_LPC_AD3"),
PINCTRL_PIN(51, "MF_LPC_CLKOUT0"),
PINCTRL_PIN(52, "MF_LPC_AD1"),
PINCTRL_PIN(60, "SPI1_MISO"),
PINCTRL_PIN(61, "SPI1_CSO_B"),
PINCTRL_PIN(62, "SPI1_CLK"),
PINCTRL_PIN(63, "MMC1_D6"),
PINCTRL_PIN(64, "SPI1_MOSI"),
PINCTRL_PIN(65, "MMC1_D5"),
PINCTRL_PIN(66, "SPI1_CS1_B"),
PINCTRL_PIN(67, "MMC1_D4_SD_WE"),
PINCTRL_PIN(68, "MMC1_D7"),
PINCTRL_PIN(69, "MMC1_RCLK"),
PINCTRL_PIN(75, "USB_OC1_B"),
PINCTRL_PIN(76, "PMU_RESETBUTTON_B"),
PINCTRL_PIN(77, "GPIO_ALERT"),
PINCTRL_PIN(78, "SDMMC3_PWR_EN_B"),
PINCTRL_PIN(79, "ILB_SERIRQ"),
PINCTRL_PIN(80, "USB_OC0_B"),
PINCTRL_PIN(81, "SDMMC3_CD_B"),
PINCTRL_PIN(82, "SPKR"),
PINCTRL_PIN(83, "SUSPWRDNACK"),
PINCTRL_PIN(84, "SPARE_PIN"),
PINCTRL_PIN(85, "SDMMC3_1P8_EN"),
};
static const unsigned southeast_pwm0_pins[] = { 5 };
static const unsigned southeast_pwm1_pins[] = { 1 };
static const unsigned southeast_sdmmc1_pins[] = {
16, 17, 20, 23, 24, 26, 63, 65, 67, 68, 69,
};
static const unsigned southeast_sdmmc2_pins[] = { 15, 18, 19, 21, 22, 25 };
static const unsigned southeast_sdmmc3_pins[] = {
30, 31, 32, 33, 34, 35, 78, 81, 85,
};
static const unsigned southeast_spi1_pins[] = { 60, 61, 62, 64, 66 };
static const unsigned southeast_spi2_pins[] = { 2, 3, 4, 6, 7 };
static const struct intel_pingroup southeast_groups[] = {
PIN_GROUP("pwm0_grp", southeast_pwm0_pins, PINMODE(1, 0)),
PIN_GROUP("pwm1_grp", southeast_pwm1_pins, PINMODE(1, 0)),
PIN_GROUP("sdmmc1_grp", southeast_sdmmc1_pins, PINMODE(1, 0)),
PIN_GROUP("sdmmc2_grp", southeast_sdmmc2_pins, PINMODE(1, 0)),
PIN_GROUP("sdmmc3_grp", southeast_sdmmc3_pins, PINMODE(1, 0)),
PIN_GROUP("spi1_grp", southeast_spi1_pins, PINMODE(1, 0)),
PIN_GROUP("spi2_grp", southeast_spi2_pins, PINMODE(4, 0)),
};
static const char * const southeast_pwm0_groups[] = { "pwm0_grp" };
static const char * const southeast_pwm1_groups[] = { "pwm1_grp" };
static const char * const southeast_sdmmc1_groups[] = { "sdmmc1_grp" };
static const char * const southeast_sdmmc2_groups[] = { "sdmmc2_grp" };
static const char * const southeast_sdmmc3_groups[] = { "sdmmc3_grp" };
static const char * const southeast_spi1_groups[] = { "spi1_grp" };
static const char * const southeast_spi2_groups[] = { "spi2_grp" };
static const struct intel_function southeast_functions[] = {
FUNCTION("pwm0", southeast_pwm0_groups),
FUNCTION("pwm1", southeast_pwm1_groups),
FUNCTION("sdmmc1", southeast_sdmmc1_groups),
FUNCTION("sdmmc2", southeast_sdmmc2_groups),
FUNCTION("sdmmc3", southeast_sdmmc3_groups),
FUNCTION("spi1", southeast_spi1_groups),
FUNCTION("spi2", southeast_spi2_groups),
};
static const struct intel_padgroup southeast_gpps[] = {
CHV_GPP(0, 7),
CHV_GPP(15, 26),
CHV_GPP(30, 35),
CHV_GPP(45, 52),
CHV_GPP(60, 69),
CHV_GPP(75, 85),
};
static const struct intel_community southeast_communities[] = {
CHV_COMMUNITY(southeast_gpps, 16, 0x94),
};
static const struct intel_pinctrl_soc_data southeast_soc_data = {
.uid = "4",
.pins = southeast_pins,
.npins = ARRAY_SIZE(southeast_pins),
.groups = southeast_groups,
.ngroups = ARRAY_SIZE(southeast_groups),
.functions = southeast_functions,
.nfunctions = ARRAY_SIZE(southeast_functions),
.communities = southeast_communities,
.ncommunities = ARRAY_SIZE(southeast_communities),
};
static const struct intel_pinctrl_soc_data *chv_soc_data[] = {
&southwest_soc_data,
&north_soc_data,
&east_soc_data,
&southeast_soc_data,
NULL
};
/*
* Lock to serialize register accesses
*
* Due to a silicon issue, a shared lock must be used to prevent
* concurrent accesses across the 4 GPIO controllers.
*
* See Intel Atom Z8000 Processor Series Specification Update (Rev. 005),
* errata #CHT34, for further information.
*/
static DEFINE_RAW_SPINLOCK(chv_lock);
static u32 chv_pctrl_readl(struct intel_pinctrl *pctrl, unsigned int offset)
{
const struct intel_community *community = &pctrl->communities[0];
return readl(community->regs + offset);
}
static void chv_pctrl_writel(struct intel_pinctrl *pctrl, unsigned int offset, u32 value)
{
const struct intel_community *community = &pctrl->communities[0];
void __iomem *reg = community->regs + offset;
/* Write and simple read back to confirm the bus transferring done */
writel(value, reg);
readl(reg);
}
static void __iomem *chv_padreg(struct intel_pinctrl *pctrl, unsigned int offset,
unsigned int reg)
{
const struct intel_community *community = &pctrl->communities[0];
unsigned int family_no = offset / MAX_FAMILY_PAD_GPIO_NO;
unsigned int pad_no = offset % MAX_FAMILY_PAD_GPIO_NO;
offset = FAMILY_PAD_REGS_SIZE * family_no + GPIO_REGS_SIZE * pad_no;
return community->pad_regs + offset + reg;
}
static u32 chv_readl(struct intel_pinctrl *pctrl, unsigned int pin, unsigned int offset)
{
return readl(chv_padreg(pctrl, pin, offset));
}
static void chv_writel(struct intel_pinctrl *pctrl, unsigned int pin, unsigned int offset, u32 value)
{
void __iomem *reg = chv_padreg(pctrl, pin, offset);
/* Write and simple read back to confirm the bus transferring done */
writel(value, reg);
readl(reg);
}
/* When Pad Cfg is locked, driver can only change GPIOTXState or GPIORXState */
static bool chv_pad_locked(struct intel_pinctrl *pctrl, unsigned int offset)
{
return chv_readl(pctrl, offset, CHV_PADCTRL1) & CHV_PADCTRL1_CFGLOCK;
}
static int chv_get_groups_count(struct pinctrl_dev *pctldev)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
return pctrl->soc->ngroups;
}
static const char *chv_get_group_name(struct pinctrl_dev *pctldev,
unsigned int group)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
return pctrl->soc->groups[group].grp.name;
}
static int chv_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group,
const unsigned int **pins, unsigned int *npins)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
*pins = pctrl->soc->groups[group].grp.pins;
*npins = pctrl->soc->groups[group].grp.npins;
return 0;
}
static void chv_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
unsigned int offset)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
unsigned long flags;
u32 ctrl0, ctrl1;
bool locked;
raw_spin_lock_irqsave(&chv_lock, flags);
ctrl0 = chv_readl(pctrl, offset, CHV_PADCTRL0);
ctrl1 = chv_readl(pctrl, offset, CHV_PADCTRL1);
locked = chv_pad_locked(pctrl, offset);
raw_spin_unlock_irqrestore(&chv_lock, flags);
if (ctrl0 & CHV_PADCTRL0_GPIOEN) {
seq_puts(s, "GPIO ");
} else {
u32 mode;
mode = ctrl0 & CHV_PADCTRL0_PMODE_MASK;
mode >>= CHV_PADCTRL0_PMODE_SHIFT;
seq_printf(s, "mode %d ", mode);
}
seq_printf(s, "0x%08x 0x%08x", ctrl0, ctrl1);
if (locked)
seq_puts(s, " [LOCKED]");
}
static const struct pinctrl_ops chv_pinctrl_ops = {
.get_groups_count = chv_get_groups_count,
.get_group_name = chv_get_group_name,
.get_group_pins = chv_get_group_pins,
.pin_dbg_show = chv_pin_dbg_show,
};
static int chv_get_functions_count(struct pinctrl_dev *pctldev)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
return pctrl->soc->nfunctions;
}
static const char *chv_get_function_name(struct pinctrl_dev *pctldev,
unsigned int function)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
return pctrl->soc->functions[function].name;
}
static int chv_get_function_groups(struct pinctrl_dev *pctldev,
unsigned int function,
const char * const **groups,
unsigned int * const ngroups)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
*groups = pctrl->soc->functions[function].groups;
*ngroups = pctrl->soc->functions[function].ngroups;
return 0;
}
static int chv_pinmux_set_mux(struct pinctrl_dev *pctldev,
unsigned int function, unsigned int group)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
struct device *dev = pctrl->dev;
const struct intel_pingroup *grp;
unsigned long flags;
int i;
grp = &pctrl->soc->groups[group];
raw_spin_lock_irqsave(&chv_lock, flags);
/* Check first that the pad is not locked */
for (i = 0; i < grp->grp.npins; i++) {
if (chv_pad_locked(pctrl, grp->grp.pins[i])) {
raw_spin_unlock_irqrestore(&chv_lock, flags);
dev_warn(dev, "unable to set mode for locked pin %u\n", grp->grp.pins[i]);
return -EBUSY;
}
}
for (i = 0; i < grp->grp.npins; i++) {
int pin = grp->grp.pins[i];
unsigned int mode;
bool invert_oe;
u32 value;
/* Check if there is pin-specific config */
if (grp->modes)
mode = grp->modes[i];
else
mode = grp->mode;
/* Extract OE inversion */
invert_oe = mode & PINMODE_INVERT_OE;
mode &= ~PINMODE_INVERT_OE;
value = chv_readl(pctrl, pin, CHV_PADCTRL0);
/* Disable GPIO mode */
value &= ~CHV_PADCTRL0_GPIOEN;
/* Set to desired mode */
value &= ~CHV_PADCTRL0_PMODE_MASK;
value |= mode << CHV_PADCTRL0_PMODE_SHIFT;
chv_writel(pctrl, pin, CHV_PADCTRL0, value);
/* Update for invert_oe */
value = chv_readl(pctrl, pin, CHV_PADCTRL1) & ~CHV_PADCTRL1_INVRXTX_MASK;
if (invert_oe)
value |= CHV_PADCTRL1_INVRXTX_TXENABLE;
chv_writel(pctrl, pin, CHV_PADCTRL1, value);
dev_dbg(dev, "configured pin %u mode %u OE %sinverted\n", pin, mode,
invert_oe ? "" : "not ");
}
raw_spin_unlock_irqrestore(&chv_lock, flags);
return 0;
}
static void chv_gpio_clear_triggering(struct intel_pinctrl *pctrl,
unsigned int offset)
{
u32 invrxtx_mask = CHV_PADCTRL1_INVRXTX_MASK;
u32 value;
/*
* One some devices the GPIO should output the inverted value from what
* device-drivers / ACPI code expects (inverted external buffer?). The
* BIOS makes this work by setting the CHV_PADCTRL1_INVRXTX_TXDATA flag,
* preserve this flag if the pin is already setup as GPIO.
*/
value = chv_readl(pctrl, offset, CHV_PADCTRL0);
if (value & CHV_PADCTRL0_GPIOEN)
invrxtx_mask &= ~CHV_PADCTRL1_INVRXTX_TXDATA;
value = chv_readl(pctrl, offset, CHV_PADCTRL1);
value &= ~CHV_PADCTRL1_INTWAKECFG_MASK;
value &= ~invrxtx_mask;
chv_writel(pctrl, offset, CHV_PADCTRL1, value);
}
static int chv_gpio_request_enable(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned int offset)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
unsigned long flags;
u32 value;
raw_spin_lock_irqsave(&chv_lock, flags);
if (chv_pad_locked(pctrl, offset)) {
value = chv_readl(pctrl, offset, CHV_PADCTRL0);
if (!(value & CHV_PADCTRL0_GPIOEN)) {
/* Locked so cannot enable */
raw_spin_unlock_irqrestore(&chv_lock, flags);
return -EBUSY;
}
} else {
struct intel_community_context *cctx = &pctrl->context.communities[0];
int i;
/* Reset the interrupt mapping */
for (i = 0; i < ARRAY_SIZE(cctx->intr_lines); i++) {
if (cctx->intr_lines[i] == offset) {
cctx->intr_lines[i] = CHV_INVALID_HWIRQ;
break;
}
}
/* Disable interrupt generation */
chv_gpio_clear_triggering(pctrl, offset);
value = chv_readl(pctrl, offset, CHV_PADCTRL0);
/*
* If the pin is in HiZ mode (both TX and RX buffers are
* disabled) we turn it to be input now.
*/
if ((value & CHV_PADCTRL0_GPIOCFG_MASK) ==
(CHV_PADCTRL0_GPIOCFG_HIZ << CHV_PADCTRL0_GPIOCFG_SHIFT)) {
value &= ~CHV_PADCTRL0_GPIOCFG_MASK;
value |= CHV_PADCTRL0_GPIOCFG_GPI << CHV_PADCTRL0_GPIOCFG_SHIFT;
}
/* Switch to a GPIO mode */
value |= CHV_PADCTRL0_GPIOEN;
chv_writel(pctrl, offset, CHV_PADCTRL0, value);
}
raw_spin_unlock_irqrestore(&chv_lock, flags);
return 0;
}
static void chv_gpio_disable_free(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned int offset)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
unsigned long flags;
raw_spin_lock_irqsave(&chv_lock, flags);
if (!chv_pad_locked(pctrl, offset))
chv_gpio_clear_triggering(pctrl, offset);
raw_spin_unlock_irqrestore(&chv_lock, flags);
}
static int chv_gpio_set_direction(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned int offset, bool input)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
unsigned long flags;
u32 ctrl0;
raw_spin_lock_irqsave(&chv_lock, flags);
ctrl0 = chv_readl(pctrl, offset, CHV_PADCTRL0) & ~CHV_PADCTRL0_GPIOCFG_MASK;
if (input)
ctrl0 |= CHV_PADCTRL0_GPIOCFG_GPI << CHV_PADCTRL0_GPIOCFG_SHIFT;
else
ctrl0 |= CHV_PADCTRL0_GPIOCFG_GPO << CHV_PADCTRL0_GPIOCFG_SHIFT;
chv_writel(pctrl, offset, CHV_PADCTRL0, ctrl0);
raw_spin_unlock_irqrestore(&chv_lock, flags);
return 0;
}
static const struct pinmux_ops chv_pinmux_ops = {
.get_functions_count = chv_get_functions_count,
.get_function_name = chv_get_function_name,
.get_function_groups = chv_get_function_groups,
.set_mux = chv_pinmux_set_mux,
.gpio_request_enable = chv_gpio_request_enable,
.gpio_disable_free = chv_gpio_disable_free,
.gpio_set_direction = chv_gpio_set_direction,
};
static int chv_config_get(struct pinctrl_dev *pctldev, unsigned int pin,
unsigned long *config)
{
struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
enum pin_config_param param = pinconf_to_config_param(*config);
unsigned long flags;
u32 ctrl0, ctrl1;
u16 arg = 0;
u32 term;
raw_spin_lock_irqsave(&chv_lock, flags);
ctrl0 = chv_readl(pctrl, pin, CHV_PADCTRL0);
ctrl1 = chv_readl(pctrl, pin, CHV_PADCTRL1);
raw_spin_unlock_irqrestore(&chv_lock, flags);
term = (ctrl0 & CHV_PADCTRL0_TERM_MASK) >> CHV_PADCTRL0_TERM_SHIFT;
switch (param) {
case PIN_CONFIG_BIAS_DISABLE:
if (term)
return -EINVAL;
break;
case PIN_CONFIG_BIAS_PULL_UP:
if (!(ctrl0 & CHV_PADCTRL0_TERM_UP))
return -EINVAL;
switch (term) {
case CHV_PADCTRL0_TERM_20K:
arg = 20000;
break;
case CHV_PADCTRL0_TERM_5K:
arg = 5000;
break;
case CHV_PADCTRL0_TERM_1K:
arg = 1000;
break;
}
break;
case PIN_CONFIG_BIAS_PULL_DOWN:
if (!term || (ctrl0 & CHV_PADCTRL0_TERM_UP))
return -EINVAL;
switch (term) {
case CHV_PADCTRL0_TERM_20K:
arg = 20000;
break;
case CHV_PADCTRL0_TERM_5K:
arg = 5000;
break;
}
break;
case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: {
u32 cfg;
cfg = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK;
cfg >>= CHV_PADCTRL0_GPIOCFG_SHIFT;
if (cfg != CHV_PADCTRL0_GPIOCFG_HIZ)
return -EINVAL;
break;
case PIN_CONFIG_DRIVE_PUSH_PULL:
if (ctrl1 & CHV_PADCTRL1_ODEN)
return -EINVAL;
break;
case PIN_CONFIG_DRIVE_OPEN_DRAIN:
if (!(ctrl1 & CHV_PADCTRL1_ODEN))
return -EINVAL;
break;
}
default:
return -ENOTSUPP;
}
*config = pinconf_to_config_packed(param, arg);
return 0;
}
static int chv_config_set_pull(struct intel_pinctrl *pctrl, unsigned int pin,
enum pin_config_param param, u32 arg)
{
unsigned long flags;
u32 ctrl0, pull;
raw_spin_lock_irqsave(&chv_lock, flags);
ctrl0 = chv_readl(pctrl, pin, CHV_PADCTRL0);
switch (param) {
case PIN_CONFIG_BIAS_DISABLE:
ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP);
break;
case PIN_CONFIG_BIAS_PULL_UP:
ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP);
switch (arg) {
case 1000:
/* For 1k there is only pull up */
pull = CHV_PADCTRL0_TERM_1K << CHV_PADCTRL0_TERM_SHIFT;
break;