--- /dev/null
+/*
+ * Cherryview/Braswell pinctrl driver
+ *
+ * Copyright (C) 2014, 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>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
+#include <linux/acpi.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/platform_device.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 (0xf << CHV_PADCTRL0_INTSEL_SHIFT)
+#define CHV_PADCTRL0_TERM_UP BIT(23)
+#define CHV_PADCTRL0_TERM_SHIFT 20
+#define CHV_PADCTRL0_TERM_MASK (7 << CHV_PADCTRL0_TERM_SHIFT)
+#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 (0xf << CHV_PADCTRL0_PMODE_SHIFT)
+#define CHV_PADCTRL0_GPIOEN BIT(15)
+#define CHV_PADCTRL0_GPIOCFG_SHIFT 8
+#define CHV_PADCTRL0_GPIOCFG_MASK (7 << CHV_PADCTRL0_GPIOCFG_SHIFT)
+#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 (0xf << CHV_PADCTRL1_INVRXTX_SHIFT)
+#define CHV_PADCTRL1_INVRXTX_TXENABLE (2 << CHV_PADCTRL1_INVRXTX_SHIFT)
+#define CHV_PADCTRL1_ODEN BIT(3)
+#define CHV_PADCTRL1_INVRXTX_RXDATA (4 << CHV_PADCTRL1_INVRXTX_SHIFT)
+#define CHV_PADCTRL1_INTWAKECFG_MASK 7
+#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 chv_alternate_function - A per group or per pin alternate function
+ * @pin: Pin number (only used in per pin configs)
+ * @mode: Mode the pin should be set in
+ * @invert_oe: Invert OE for this pin
+ */
+struct chv_alternate_function {
+ unsigned pin;
+ u8 mode;
+ bool invert_oe;
+};
+
+/**
+ * struct chv_pincgroup - describes a CHV pin group
+ * @name: Name of the group
+ * @pins: An array of pins in this group
+ * @npins: Number of pins in this group
+ * @altfunc: Alternate function applied to all pins in this group
+ * @overrides: Alternate function override per pin or %NULL if not used
+ * @noverrides: Number of per pin alternate function overrides if
+ * @overrides != NULL.
+ */
+struct chv_pingroup {
+ const char *name;
+ const unsigned *pins;
+ size_t npins;
+ struct chv_alternate_function altfunc;
+ const struct chv_alternate_function *overrides;
+ size_t noverrides;
+};
+
+/**
+ * struct chv_function - A CHV pinmux function
+ * @name: Name of the function
+ * @groups: An array of groups for this function
+ * @ngroups: Number of groups in @groups
+ */
+struct chv_function {
+ const char *name;
+ const char * const *groups;
+ size_t ngroups;
+};
+
+/**
+ * struct chv_gpio_pinrange - A range of pins that can be used as GPIOs
+ * @base: Start pin number
+ * @npins: Number of pins in this range
+ */
+struct chv_gpio_pinrange {
+ unsigned base;
+ unsigned npins;
+};
+
+/**
+ * struct chv_community - A community specific configuration
+ * @uid: ACPI _UID used to match the community
+ * @pins: All pins in this community
+ * @npins: Number of pins
+ * @groups: All groups in this community
+ * @ngroups: Number of groups
+ * @functions: All functions in this community
+ * @nfunctions: Number of functions
+ * @ngpios: Number of GPIOs in this community
+ * @gpio_ranges: An array of GPIO ranges in this community
+ * @ngpio_ranges: Number of GPIO ranges
+ * @ngpios: Total number of GPIOs in this community
+ */
+struct chv_community {
+ const char *uid;
+ const struct pinctrl_pin_desc *pins;
+ size_t npins;
+ const struct chv_pingroup *groups;
+ size_t ngroups;
+ const struct chv_function *functions;
+ size_t nfunctions;
+ const struct chv_gpio_pinrange *gpio_ranges;
+ size_t ngpio_ranges;
+ size_t ngpios;
+};
+
+struct chv_pin_context {
+ u32 padctrl0;
+ u32 padctrl1;
+};
+
+/**
+ * struct chv_pinctrl - CHV pinctrl private structure
+ * @dev: Pointer to the parent device
+ * @pctldesc: Pin controller description
+ * @pctldev: Pointer to the pin controller device
+ * @chip: GPIO chip in this pin controller
+ * @regs: MMIO registers
+ * @lock: Lock to serialize register accesses
+ * @intr_lines: Stores mapping between 16 HW interrupt wires and GPIO
+ * offset (in GPIO number space)
+ * @community: Community this pinctrl instance represents
+ *
+ * The first group in @groups is expected to contain all pins that can be
+ * used as GPIOs.
+ */
+struct chv_pinctrl {
+ struct device *dev;
+ struct pinctrl_desc pctldesc;
+ struct pinctrl_dev *pctldev;
+ struct gpio_chip chip;
+ void __iomem *regs;
+ spinlock_t lock;
+ unsigned intr_lines[16];
+ const struct chv_community *community;
+ u32 saved_intmask;
+ struct chv_pin_context *saved_pin_context;
+};
+
+#define gpiochip_to_pinctrl(c) container_of(c, struct chv_pinctrl, chip)
+
+#define ALTERNATE_FUNCTION(p, m, i) \
+ { \
+ .pin = (p), \
+ .mode = (m), \
+ .invert_oe = (i), \
+ }
+
+#define PIN_GROUP(n, p, m, i) \
+ { \
+ .name = (n), \
+ .pins = (p), \
+ .npins = ARRAY_SIZE((p)), \
+ .altfunc.mode = (m), \
+ .altfunc.invert_oe = (i), \
+ }
+
+#define PIN_GROUP_WITH_OVERRIDE(n, p, m, i, o) \
+ { \
+ .name = (n), \
+ .pins = (p), \
+ .npins = ARRAY_SIZE((p)), \
+ .altfunc.mode = (m), \
+ .altfunc.invert_oe = (i), \
+ .overrides = (o), \
+ .noverrides = ARRAY_SIZE((o)), \
+ }
+
+#define FUNCTION(n, g) \
+ { \
+ .name = (n), \
+ .groups = (g), \
+ .ngroups = ARRAY_SIZE((g)), \
+ }
+
+#define GPIO_PINRANGE(start, end) \
+ { \
+ .base = (start), \
+ .npins = (end) - (start) + 1, \
+ }
+
+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_fspi_pins[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
+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_smbus_pins[] = { 79, 81, 82 };
+static const unsigned southwest_spi3_pins[] = { 76, 79, 80, 81, 82 };
+
+/* LPE I2S TXD pins need to have invert_oe set */
+static const struct chv_alternate_function southwest_lpe_altfuncs[] = {
+ ALTERNATE_FUNCTION(30, 1, true),
+ ALTERNATE_FUNCTION(34, 1, true),
+ ALTERNATE_FUNCTION(97, 1, true),
+};
+
+/*
+ * Two spi3 chipselects are available in different mode than the main spi3
+ * functionality, which is using mode 1.
+ */
+static const struct chv_alternate_function southwest_spi3_altfuncs[] = {
+ ALTERNATE_FUNCTION(76, 3, false),
+ ALTERNATE_FUNCTION(80, 3, false),
+};
+
+static const struct chv_pingroup southwest_groups[] = {
+ PIN_GROUP("uart0_grp", southwest_uart0_pins, 2, false),
+ PIN_GROUP("uart1_grp", southwest_uart1_pins, 1, false),
+ PIN_GROUP("uart2_grp", southwest_uart2_pins, 1, false),
+ PIN_GROUP("hda_grp", southwest_hda_pins, 2, false),
+ PIN_GROUP("i2c0_grp", southwest_i2c0_pins, 1, true),
+ PIN_GROUP("i2c1_grp", southwest_i2c1_pins, 1, true),
+ PIN_GROUP("i2c2_grp", southwest_i2c2_pins, 1, true),
+ PIN_GROUP("i2c3_grp", southwest_i2c3_pins, 1, true),
+ PIN_GROUP("i2c4_grp", southwest_i2c4_pins, 1, true),
+ PIN_GROUP("i2c5_grp", southwest_i2c5_pins, 1, true),
+ PIN_GROUP("i2c6_grp", southwest_i2c6_pins, 1, true),
+ PIN_GROUP("i2c_nfc_grp", southwest_i2c_nfc_pins, 2, true),
+
+ PIN_GROUP_WITH_OVERRIDE("lpe_grp", southwest_lpe_pins, 1, false,
+ southwest_lpe_altfuncs),
+ PIN_GROUP_WITH_OVERRIDE("spi3_grp", southwest_spi3_pins, 2, false,
+ 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 chv_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 chv_gpio_pinrange southwest_gpio_ranges[] = {
+ GPIO_PINRANGE(0, 7),
+ GPIO_PINRANGE(15, 22),
+ GPIO_PINRANGE(30, 37),
+ GPIO_PINRANGE(45, 52),
+ GPIO_PINRANGE(60, 67),
+ GPIO_PINRANGE(75, 82),
+ GPIO_PINRANGE(90, 97),
+};
+
+static const struct chv_community southwest_community = {
+ .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),
+ .gpio_ranges = southwest_gpio_ranges,
+ .ngpio_ranges = ARRAY_SIZE(southwest_gpio_ranges),
+ .ngpios = ARRAY_SIZE(southwest_pins),
+};
+
+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 chv_gpio_pinrange north_gpio_ranges[] = {
+ GPIO_PINRANGE(0, 8),
+ GPIO_PINRANGE(15, 27),
+ GPIO_PINRANGE(30, 41),
+ GPIO_PINRANGE(45, 56),
+ GPIO_PINRANGE(60, 72),
+};
+
+static const struct chv_community north_community = {
+ .uid = "2",
+ .pins = north_pins,
+ .npins = ARRAY_SIZE(north_pins),
+ .gpio_ranges = north_gpio_ranges,
+ .ngpio_ranges = ARRAY_SIZE(north_gpio_ranges),
+ .ngpios = ARRAY_SIZE(north_pins),
+};
+
+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 chv_gpio_pinrange east_gpio_ranges[] = {
+ GPIO_PINRANGE(0, 11),
+ GPIO_PINRANGE(15, 26),
+};
+
+static const struct chv_community east_community = {
+ .uid = "3",
+ .pins = east_pins,
+ .npins = ARRAY_SIZE(east_pins),
+ .gpio_ranges = east_gpio_ranges,
+ .ngpio_ranges = ARRAY_SIZE(east_gpio_ranges),
+ .ngpios = ARRAY_SIZE(east_pins),
+};
+
+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 chv_pingroup southeast_groups[] = {
+ PIN_GROUP("pwm0_grp", southeast_pwm0_pins, 1, false),
+ PIN_GROUP("pwm1_grp", southeast_pwm1_pins, 1, false),
+ PIN_GROUP("sdmmc1_grp", southeast_sdmmc1_pins, 1, false),
+ PIN_GROUP("sdmmc2_grp", southeast_sdmmc2_pins, 1, false),
+ PIN_GROUP("sdmmc3_grp", southeast_sdmmc3_pins, 1, false),
+ PIN_GROUP("spi1_grp", southeast_spi1_pins, 1, false),
+ PIN_GROUP("spi2_grp", southeast_spi2_pins, 4, false),
+};
+
+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 chv_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 chv_gpio_pinrange southeast_gpio_ranges[] = {
+ GPIO_PINRANGE(0, 7),
+ GPIO_PINRANGE(15, 26),
+ GPIO_PINRANGE(30, 35),
+ GPIO_PINRANGE(45, 52),
+ GPIO_PINRANGE(60, 69),
+ GPIO_PINRANGE(75, 85),
+};
+
+static const struct chv_community southeast_community = {
+ .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),
+ .gpio_ranges = southeast_gpio_ranges,
+ .ngpio_ranges = ARRAY_SIZE(southeast_gpio_ranges),
+ .ngpios = ARRAY_SIZE(southeast_pins),
+};
+
+static const struct chv_community *chv_communities[] = {
+ &southwest_community,
+ &north_community,
+ &east_community,
+ &southeast_community,
+};
+
+static void __iomem *chv_padreg(struct chv_pinctrl *pctrl, unsigned offset,
+ unsigned reg)
+{
+ unsigned family_no = offset / MAX_FAMILY_PAD_GPIO_NO;
+ unsigned pad_no = offset % MAX_FAMILY_PAD_GPIO_NO;
+
+ offset = FAMILY_PAD_REGS_OFF + FAMILY_PAD_REGS_SIZE * family_no +
+ GPIO_REGS_SIZE * pad_no;
+
+ return pctrl->regs + offset + reg;
+}
+
+static void chv_writel(u32 value, void __iomem *reg)
+{
+ writel(value, reg);
+ /* simple readback to confirm the bus transferring done */
+ readl(reg);
+}
+
+/* When Pad Cfg is locked, driver can only change GPIOTXState or GPIORXState */
+static bool chv_pad_locked(struct chv_pinctrl *pctrl, unsigned offset)
+{
+ void __iomem *reg;
+
+ reg = chv_padreg(pctrl, offset, CHV_PADCTRL1);
+ return readl(reg) & CHV_PADCTRL1_CFGLOCK;
+}
+
+static int chv_get_groups_count(struct pinctrl_dev *pctldev)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ return pctrl->community->ngroups;
+}
+
+static const char *chv_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned group)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ return pctrl->community->groups[group].name;
+}
+
+static int chv_get_group_pins(struct pinctrl_dev *pctldev, unsigned group,
+ const unsigned **pins, unsigned *npins)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ *pins = pctrl->community->groups[group].pins;
+ *npins = pctrl->community->groups[group].npins;
+ return 0;
+}
+
+static void chv_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
+ unsigned offset)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ unsigned long flags;
+ u32 ctrl0, ctrl1;
+ bool locked;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ ctrl0 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0));
+ ctrl1 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL1));
+ locked = chv_pad_locked(pctrl, offset);
+
+ spin_unlock_irqrestore(&pctrl->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, "ctrl0 0x%08x ctrl1 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 chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ return pctrl->community->nfunctions;
+}
+
+static const char *chv_get_function_name(struct pinctrl_dev *pctldev,
+ unsigned function)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ return pctrl->community->functions[function].name;
+}
+
+static int chv_get_function_groups(struct pinctrl_dev *pctldev,
+ unsigned function,
+ const char * const **groups,
+ unsigned * const ngroups)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+ *groups = pctrl->community->functions[function].groups;
+ *ngroups = pctrl->community->functions[function].ngroups;
+ return 0;
+}
+
+static int chv_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned function,
+ unsigned group)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct chv_pingroup *grp;
+ unsigned long flags;
+ int i;
+
+ grp = &pctrl->community->groups[group];
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ /* Check first that the pad is not locked */
+ for (i = 0; i < grp->npins; i++) {
+ if (chv_pad_locked(pctrl, grp->pins[i])) {
+ dev_warn(pctrl->dev, "unable to set mode for locked pin %u\n",
+ grp->pins[i]);
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ return -EBUSY;
+ }
+ }
+
+ for (i = 0; i < grp->npins; i++) {
+ const struct chv_alternate_function *altfunc = &grp->altfunc;
+ int pin = grp->pins[i];
+ void __iomem *reg;
+ u32 value;
+
+ /* Check if there is pin-specific config */
+ if (grp->overrides) {
+ int j;
+
+ for (j = 0; j < grp->noverrides; j++) {
+ if (grp->overrides[j].pin == pin) {
+ altfunc = &grp->overrides[j];
+ break;
+ }
+ }
+ }
+
+ reg = chv_padreg(pctrl, pin, CHV_PADCTRL0);
+ value = readl(reg);
+ /* Disable GPIO mode */
+ value &= ~CHV_PADCTRL0_GPIOEN;
+ /* Set to desired mode */
+ value &= ~CHV_PADCTRL0_PMODE_MASK;
+ value |= altfunc->mode << CHV_PADCTRL0_PMODE_SHIFT;
+ chv_writel(value, reg);
+
+ /* Update for invert_oe */
+ reg = chv_padreg(pctrl, pin, CHV_PADCTRL1);
+ value = readl(reg) & ~CHV_PADCTRL1_INVRXTX_MASK;
+ if (altfunc->invert_oe)
+ value |= CHV_PADCTRL1_INVRXTX_TXENABLE;
+ chv_writel(value, reg);
+
+ dev_dbg(pctrl->dev, "configured pin %u mode %u OE %sinverted\n",
+ pin, altfunc->mode, altfunc->invert_oe ? "" : "not ");
+ }
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ return 0;
+}
+
+static int chv_gpio_request_enable(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned offset)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ unsigned long flags;
+ void __iomem *reg;
+ u32 value;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ if (chv_pad_locked(pctrl, offset)) {
+ value = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0));
+ if (!(value & CHV_PADCTRL0_GPIOEN)) {
+ /* Locked so cannot enable */
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ return -EBUSY;
+ }
+ } else {
+ int i;
+
+ /* Reset the interrupt mapping */
+ for (i = 0; i < ARRAY_SIZE(pctrl->intr_lines); i++) {
+ if (pctrl->intr_lines[i] == offset) {
+ pctrl->intr_lines[i] = 0;
+ break;
+ }
+ }
+
+ /* Disable interrupt generation */
+ reg = chv_padreg(pctrl, offset, CHV_PADCTRL1);
+ value = readl(reg);
+ value &= ~CHV_PADCTRL1_INTWAKECFG_MASK;
+ value &= ~CHV_PADCTRL1_INVRXTX_MASK;
+ chv_writel(value, reg);
+
+ reg = chv_padreg(pctrl, offset, CHV_PADCTRL0);
+ value = readl(reg);
+
+ /*
+ * 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(value, reg);
+ }
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ return 0;
+}
+
+static void chv_gpio_disable_free(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned offset)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ unsigned long flags;
+ void __iomem *reg;
+ u32 value;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ reg = chv_padreg(pctrl, offset, CHV_PADCTRL0);
+ value = readl(reg) & ~CHV_PADCTRL0_GPIOEN;
+ chv_writel(value, reg);
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+}
+
+static int chv_gpio_set_direction(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned offset, bool input)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ void __iomem *reg = chv_padreg(pctrl, offset, CHV_PADCTRL0);
+ unsigned long flags;
+ u32 ctrl0;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ ctrl0 = readl(reg) & ~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(ctrl0, reg);
+
+ spin_unlock_irqrestore(&pctrl->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 pin,
+ unsigned long *config)
+{
+ struct chv_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;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+ ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+ ctrl1 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1));
+ spin_unlock_irqrestore(&pctrl->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_DRIVE_OPEN_DRAIN:
+ if (!(ctrl1 & CHV_PADCTRL1_ODEN))
+ return -EINVAL;
+ 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;
+ }
+
+ default:
+ return -ENOTSUPP;
+ }
+
+ *config = pinconf_to_config_packed(param, arg);
+ return 0;
+}
+
+static int chv_config_set_pull(struct chv_pinctrl *pctrl, unsigned pin,
+ enum pin_config_param param, u16 arg)
+{
+ void __iomem *reg = chv_padreg(pctrl, pin, CHV_PADCTRL0);
+ unsigned long flags;
+ u32 ctrl0, pull;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+ ctrl0 = readl(reg);
+
+ 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;
+ case 5000:
+ pull = CHV_PADCTRL0_TERM_5K << CHV_PADCTRL0_TERM_SHIFT;
+ break;
+ case 20000:
+ pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT;
+ break;
+ default:
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ return -EINVAL;
+ }
+
+ ctrl0 |= CHV_PADCTRL0_TERM_UP | pull;
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP);
+
+ switch (arg) {
+ case 5000:
+ pull = CHV_PADCTRL0_TERM_5K << CHV_PADCTRL0_TERM_SHIFT;
+ break;
+ case 20000:
+ pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT;
+ break;
+ default:
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ return -EINVAL;
+ }
+
+ ctrl0 |= pull;
+ break;
+
+ default:
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ return -EINVAL;
+ }
+
+ chv_writel(ctrl0, reg);
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ return 0;
+}
+
+static int chv_config_set(struct pinctrl_dev *pctldev, unsigned pin,
+ unsigned long *configs, unsigned nconfigs)
+{
+ struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ enum pin_config_param param;
+ int i, ret;
+ u16 arg;
+
+ if (chv_pad_locked(pctrl, pin))
+ return -EBUSY;
+
+ for (i = 0; i < nconfigs; i++) {
+ param = pinconf_to_config_param(configs[i]);
+ arg = pinconf_to_config_argument(configs[i]);
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+ case PIN_CONFIG_BIAS_PULL_UP:
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ ret = chv_config_set_pull(pctrl, pin, param, arg);
+ if (ret)
+ return ret;
+ break;
+
+ default:
+ return -ENOTSUPP;
+ }
+
+ dev_dbg(pctrl->dev, "pin %d set config %d arg %u\n", pin,
+ param, arg);
+ }
+
+ return 0;
+}
+
+static const struct pinconf_ops chv_pinconf_ops = {
+ .is_generic = true,
+ .pin_config_set = chv_config_set,
+ .pin_config_get = chv_config_get,
+};
+
+static struct pinctrl_desc chv_pinctrl_desc = {
+ .pctlops = &chv_pinctrl_ops,
+ .pmxops = &chv_pinmux_ops,
+ .confops = &chv_pinconf_ops,
+ .owner = THIS_MODULE,
+};
+
+static int chv_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+ return pinctrl_request_gpio(chip->base + offset);
+}
+
+static void chv_gpio_free(struct gpio_chip *chip, unsigned offset)
+{
+ pinctrl_free_gpio(chip->base + offset);
+}
+
+static unsigned chv_gpio_offset_to_pin(struct chv_pinctrl *pctrl,
+ unsigned offset)
+{
+ return pctrl->community->pins[offset].number;
+}
+
+static int chv_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
+ int pin = chv_gpio_offset_to_pin(pctrl, offset);
+ u32 ctrl0, cfg;
+
+ ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+
+ cfg = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK;
+ cfg >>= CHV_PADCTRL0_GPIOCFG_SHIFT;
+
+ if (cfg == CHV_PADCTRL0_GPIOCFG_GPO)
+ return !!(ctrl0 & CHV_PADCTRL0_GPIOTXSTATE);
+ return !!(ctrl0 & CHV_PADCTRL0_GPIORXSTATE);
+}
+
+static void chv_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
+ unsigned pin = chv_gpio_offset_to_pin(pctrl, offset);
+ unsigned long flags;
+ void __iomem *reg;
+ u32 ctrl0;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ reg = chv_padreg(pctrl, pin, CHV_PADCTRL0);
+ ctrl0 = readl(reg);
+
+ if (value)
+ ctrl0 |= CHV_PADCTRL0_GPIOTXSTATE;
+ else
+ ctrl0 &= ~CHV_PADCTRL0_GPIOTXSTATE;
+
+ chv_writel(ctrl0, reg);
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+}
+
+static int chv_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
+{
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
+ unsigned pin = chv_gpio_offset_to_pin(pctrl, offset);
+ u32 ctrl0, direction;
+
+ ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+
+ direction = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK;
+ direction >>= CHV_PADCTRL0_GPIOCFG_SHIFT;
+
+ return direction != CHV_PADCTRL0_GPIOCFG_GPO;
+}
+
+static int chv_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ return pinctrl_gpio_direction_input(chip->base + offset);
+}
+
+static int chv_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
+ int value)
+{
+ chv_gpio_set(chip, offset, value);
+ return pinctrl_gpio_direction_output(chip->base + offset);
+}
+
+static const struct gpio_chip chv_gpio_chip = {
+ .owner = THIS_MODULE,
+ .request = chv_gpio_request,
+ .free = chv_gpio_free,
+ .get_direction = chv_gpio_get_direction,
+ .direction_input = chv_gpio_direction_input,
+ .direction_output = chv_gpio_direction_output,
+ .get = chv_gpio_get,
+ .set = chv_gpio_set,
+};
+
+static void chv_gpio_irq_ack(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
+ int pin = chv_gpio_offset_to_pin(pctrl, irqd_to_hwirq(d));
+ u32 intr_line;
+
+ spin_lock(&pctrl->lock);
+
+ intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+ intr_line &= CHV_PADCTRL0_INTSEL_MASK;
+ intr_line >>= CHV_PADCTRL0_INTSEL_SHIFT;
+ chv_writel(BIT(intr_line), pctrl->regs + CHV_INTSTAT);
+
+ spin_unlock(&pctrl->lock);
+}
+
+static void chv_gpio_irq_mask_unmask(struct irq_data *d, bool mask)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
+ int pin = chv_gpio_offset_to_pin(pctrl, irqd_to_hwirq(d));
+ u32 value, intr_line;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+ intr_line &= CHV_PADCTRL0_INTSEL_MASK;
+ intr_line >>= CHV_PADCTRL0_INTSEL_SHIFT;
+
+ value = readl(pctrl->regs + CHV_INTMASK);
+ if (mask)
+ value &= ~BIT(intr_line);
+ else
+ value |= BIT(intr_line);
+ chv_writel(value, pctrl->regs + CHV_INTMASK);
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+}
+
+static void chv_gpio_irq_mask(struct irq_data *d)
+{
+ chv_gpio_irq_mask_unmask(d, true);
+}
+
+static void chv_gpio_irq_unmask(struct irq_data *d)
+{
+ chv_gpio_irq_mask_unmask(d, false);
+}
+
+static unsigned chv_gpio_irq_startup(struct irq_data *d)
+{
+ /*
+ * Check if the interrupt has been requested with 0 as triggering
+ * type. In that case it is assumed that the current values
+ * programmed to the hardware are used (e.g BIOS configured
+ * defaults).
+ *
+ * In that case ->irq_set_type() will never be called so we need to
+ * read back the values from hardware now, set correct flow handler
+ * and update mappings before the interrupt is being used.
+ */
+ if (irqd_get_trigger_type(d) == IRQ_TYPE_NONE) {
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
+ unsigned offset = irqd_to_hwirq(d);
+ int pin = chv_gpio_offset_to_pin(pctrl, offset);
+ irq_flow_handler_t handler;
+ unsigned long flags;
+ u32 intsel, value;
+
+ intsel = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+ intsel &= CHV_PADCTRL0_INTSEL_MASK;
+ intsel >>= CHV_PADCTRL0_INTSEL_SHIFT;
+
+ value = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1));
+ if (value & CHV_PADCTRL1_INTWAKECFG_LEVEL)
+ handler = handle_level_irq;
+ else
+ handler = handle_edge_irq;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+ if (!pctrl->intr_lines[intsel]) {
+ __irq_set_handler_locked(d->irq, handler);
+ pctrl->intr_lines[intsel] = offset;
+ }
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ }
+
+ chv_gpio_irq_unmask(d);
+ return 0;
+}
+
+static int chv_gpio_irq_type(struct irq_data *d, unsigned type)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
+ unsigned offset = irqd_to_hwirq(d);
+ int pin = chv_gpio_offset_to_pin(pctrl, offset);
+ unsigned long flags;
+ u32 value;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ /*
+ * Pins which can be used as shared interrupt are configured in
+ * BIOS. Driver trusts BIOS configurations and assigns different
+ * handler according to the irq type.
+ *
+ * Driver needs to save the mapping between each pin and
+ * its interrupt line.
+ * 1. If the pin cfg is locked in BIOS:
+ * Trust BIOS has programmed IntWakeCfg bits correctly,
+ * driver just needs to save the mapping.
+ * 2. If the pin cfg is not locked in BIOS:
+ * Driver programs the IntWakeCfg bits and save the mapping.
+ */
+ if (!chv_pad_locked(pctrl, pin)) {
+ void __iomem *reg = chv_padreg(pctrl, pin, CHV_PADCTRL1);
+
+ value = readl(reg);
+ value &= ~CHV_PADCTRL1_INTWAKECFG_MASK;
+ value &= ~CHV_PADCTRL1_INVRXTX_MASK;
+
+ if (type & IRQ_TYPE_EDGE_BOTH) {
+ if ((type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH)
+ value |= CHV_PADCTRL1_INTWAKECFG_BOTH;
+ else if (type & IRQ_TYPE_EDGE_RISING)
+ value |= CHV_PADCTRL1_INTWAKECFG_RISING;
+ else if (type & IRQ_TYPE_EDGE_FALLING)
+ value |= CHV_PADCTRL1_INTWAKECFG_FALLING;
+ } else if (type & IRQ_TYPE_LEVEL_MASK) {
+ value |= CHV_PADCTRL1_INTWAKECFG_LEVEL;
+ if (type & IRQ_TYPE_LEVEL_LOW)
+ value |= CHV_PADCTRL1_INVRXTX_RXDATA;
+ }
+
+ chv_writel(value, reg);
+ }
+
+ value = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
+ value &= CHV_PADCTRL0_INTSEL_MASK;
+ value >>= CHV_PADCTRL0_INTSEL_SHIFT;
+
+ pctrl->intr_lines[value] = offset;
+
+ if (type & IRQ_TYPE_EDGE_BOTH)
+ __irq_set_handler_locked(d->irq, handle_edge_irq);
+ else if (type & IRQ_TYPE_LEVEL_MASK)
+ __irq_set_handler_locked(d->irq, handle_level_irq);
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ return 0;
+}
+
+static struct irq_chip chv_gpio_irqchip = {
+ .name = "chv-gpio",
+ .irq_startup = chv_gpio_irq_startup,
+ .irq_ack = chv_gpio_irq_ack,
+ .irq_mask = chv_gpio_irq_mask,
+ .irq_unmask = chv_gpio_irq_unmask,
+ .irq_set_type = chv_gpio_irq_type,
+ .flags = IRQCHIP_SKIP_SET_WAKE,
+};
+
+static void chv_gpio_irq_handler(unsigned irq, struct irq_desc *desc)
+{
+ struct gpio_chip *gc = irq_desc_get_handler_data(desc);
+ struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
+ struct irq_chip *chip = irq_get_chip(irq);
+ unsigned long pending;
+ u32 intr_line;
+
+ chained_irq_enter(chip, desc);
+
+ pending = readl(pctrl->regs + CHV_INTSTAT);
+ for_each_set_bit(intr_line, &pending, 16) {
+ unsigned irq, offset;
+
+ offset = pctrl->intr_lines[intr_line];
+ irq = irq_find_mapping(gc->irqdomain, offset);
+ generic_handle_irq(irq);
+ }
+
+ chained_irq_exit(chip, desc);
+}
+
+static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq)
+{
+ const struct chv_gpio_pinrange *range;
+ struct gpio_chip *chip = &pctrl->chip;
+ int ret, i, offset;
+
+ *chip = chv_gpio_chip;
+
+ chip->ngpio = pctrl->community->ngpios;
+ chip->label = dev_name(pctrl->dev);
+ chip->dev = pctrl->dev;
+ chip->base = -1;
+
+ ret = gpiochip_add(chip);
+ if (ret) {
+ dev_err(pctrl->dev, "Failed to register gpiochip\n");
+ return ret;
+ }
+
+ for (i = 0, offset = 0; i < pctrl->community->ngpio_ranges; i++) {
+ range = &pctrl->community->gpio_ranges[i];
+ ret = gpiochip_add_pin_range(chip, dev_name(pctrl->dev), offset,
+ range->base, range->npins);
+ if (ret) {
+ dev_err(pctrl->dev, "failed to add GPIO pin range\n");
+ goto fail;
+ }
+
+ offset += range->npins;
+ }
+
+ /* Mask and clear all interrupts */
+ chv_writel(0, pctrl->regs + CHV_INTMASK);
+ chv_writel(0xffff, pctrl->regs + CHV_INTSTAT);
+
+ ret = gpiochip_irqchip_add(chip, &chv_gpio_irqchip, 0,
+ handle_simple_irq, IRQ_TYPE_NONE);
+ if (ret) {
+ dev_err(pctrl->dev, "failed to add IRQ chip\n");
+ goto fail;
+ }
+
+ gpiochip_set_chained_irqchip(chip, &chv_gpio_irqchip, irq,
+ chv_gpio_irq_handler);
+ return 0;
+
+fail:
+ gpiochip_remove(chip);
+
+ return ret;
+}
+
+static int chv_pinctrl_probe(struct platform_device *pdev)
+{
+ struct chv_pinctrl *pctrl;
+ struct acpi_device *adev;
+ struct resource *res;
+ int ret, irq, i;
+
+ adev = ACPI_COMPANION(&pdev->dev);
+ if (!adev)
+ return -ENODEV;
+
+ pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
+ if (!pctrl)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(chv_communities); i++)
+ if (!strcmp(adev->pnp.unique_id, chv_communities[i]->uid)) {
+ pctrl->community = chv_communities[i];
+ break;
+ }
+ if (i == ARRAY_SIZE(chv_communities))
+ return -ENODEV;
+
+ spin_lock_init(&pctrl->lock);
+ pctrl->dev = &pdev->dev;
+
+#ifdef CONFIG_PM_SLEEP
+ pctrl->saved_pin_context = devm_kcalloc(pctrl->dev,
+ pctrl->community->npins, sizeof(*pctrl->saved_pin_context),
+ GFP_KERNEL);
+ if (!pctrl->saved_pin_context)
+ return -ENOMEM;
+#endif
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ pctrl->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(pctrl->regs))
+ return PTR_ERR(pctrl->regs);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "failed to get interrupt number\n");
+ return irq;
+ }
+
+ pctrl->pctldesc = chv_pinctrl_desc;
+ pctrl->pctldesc.name = dev_name(&pdev->dev);
+ pctrl->pctldesc.pins = pctrl->community->pins;
+ pctrl->pctldesc.npins = pctrl->community->npins;
+
+ pctrl->pctldev = pinctrl_register(&pctrl->pctldesc, &pdev->dev, pctrl);
+ if (!pctrl->pctldev) {
+ dev_err(&pdev->dev, "failed to register pinctrl driver\n");
+ return -ENODEV;
+ }
+
+ ret = chv_gpio_probe(pctrl, irq);
+ if (ret) {
+ pinctrl_unregister(pctrl->pctldev);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, pctrl);
+
+ return 0;
+}
+
+static int chv_pinctrl_remove(struct platform_device *pdev)
+{
+ struct chv_pinctrl *pctrl = platform_get_drvdata(pdev);
+
+ gpiochip_remove(&pctrl->chip);
+ pinctrl_unregister(pctrl->pctldev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int chv_pinctrl_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct chv_pinctrl *pctrl = platform_get_drvdata(pdev);
+ int i;
+
+ pctrl->saved_intmask = readl(pctrl->regs + CHV_INTMASK);
+
+ for (i = 0; i < pctrl->community->npins; i++) {
+ const struct pinctrl_pin_desc *desc;
+ struct chv_pin_context *ctx;
+ void __iomem *reg;
+
+ desc = &pctrl->community->pins[i];
+ if (chv_pad_locked(pctrl, desc->number))
+ continue;
+
+ ctx = &pctrl->saved_pin_context[i];
+
+ reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL0);
+ ctx->padctrl0 = readl(reg) & ~CHV_PADCTRL0_GPIORXSTATE;
+
+ reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL1);
+ ctx->padctrl1 = readl(reg);
+ }
+
+ return 0;
+}
+
+static int chv_pinctrl_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct chv_pinctrl *pctrl = platform_get_drvdata(pdev);
+ int i;
+
+ /*
+ * Mask all interrupts before restoring per-pin configuration
+ * registers because we don't know in which state BIOS left them
+ * upon exiting suspend.
+ */
+ chv_writel(0, pctrl->regs + CHV_INTMASK);
+
+ for (i = 0; i < pctrl->community->npins; i++) {
+ const struct pinctrl_pin_desc *desc;
+ const struct chv_pin_context *ctx;
+ void __iomem *reg;
+ u32 val;
+
+ desc = &pctrl->community->pins[i];
+ if (chv_pad_locked(pctrl, desc->number))
+ continue;
+
+ ctx = &pctrl->saved_pin_context[i];
+
+ /* Only restore if our saved state differs from the current */
+ reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL0);
+ val = readl(reg) & ~CHV_PADCTRL0_GPIORXSTATE;
+ if (ctx->padctrl0 != val) {
+ chv_writel(ctx->padctrl0, reg);
+ dev_dbg(pctrl->dev, "restored pin %2u ctrl0 0x%08x\n",
+ desc->number, readl(reg));
+ }
+
+ reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL1);
+ val = readl(reg);
+ if (ctx->padctrl1 != val) {
+ chv_writel(ctx->padctrl1, reg);
+ dev_dbg(pctrl->dev, "restored pin %2u ctrl1 0x%08x\n",
+ desc->number, readl(reg));
+ }
+ }
+
+ /*
+ * Now that all pins are restored to known state, we can restore
+ * the interrupt mask register as well.
+ */
+ chv_writel(0xffff, pctrl->regs + CHV_INTSTAT);
+ chv_writel(pctrl->saved_intmask, pctrl->regs + CHV_INTMASK);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops chv_pinctrl_pm_ops = {
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(chv_pinctrl_suspend, chv_pinctrl_resume)
+};
+
+static const struct acpi_device_id chv_pinctrl_acpi_match[] = {
+ { "INT33FF" },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, chv_pinctrl_acpi_match);
+
+static struct platform_driver chv_pinctrl_driver = {
+ .probe = chv_pinctrl_probe,
+ .remove = chv_pinctrl_remove,
+ .driver = {
+ .name = "cherryview-pinctrl",
+ .pm = &chv_pinctrl_pm_ops,
+ .acpi_match_table = chv_pinctrl_acpi_match,
+ },
+};
+
+static int __init chv_pinctrl_init(void)
+{
+ return platform_driver_register(&chv_pinctrl_driver);
+}
+subsys_initcall(chv_pinctrl_init);
+
+static void __exit chv_pinctrl_exit(void)
+{
+ platform_driver_unregister(&chv_pinctrl_driver);
+}
+module_exit(chv_pinctrl_exit);
+
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
+MODULE_DESCRIPTION("Intel Cherryview/Braswell pinctrl driver");
+MODULE_LICENSE("GPL v2");
Code Review / kvmfornfv.git / blobdiff