[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/pinctrl/intel/pinctrl-baytrail.c b/src/kernel/linux/v4.19/drivers/pinctrl/intel/pinctrl-baytrail.c
new file mode 100644
index 0000000..021e28f
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/pinctrl/intel/pinctrl-baytrail.c
@@ -0,0 +1,1960 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Pinctrl GPIO driver for Intel Baytrail
+ *
+ * Copyright (c) 2012-2013, Intel Corporation
+ * Author: Mathias Nyman <mathias.nyman@linux.intel.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/bitops.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
+#include <linux/acpi.h>
+#include <linux/platform_device.h>
+#include <linux/seq_file.h>
+#include <linux/io.h>
+#include <linux/pm_runtime.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinconf-generic.h>
+
+/* memory mapped register offsets */
+#define BYT_CONF0_REG 0x000
+#define BYT_CONF1_REG 0x004
+#define BYT_VAL_REG 0x008
+#define BYT_DFT_REG 0x00c
+#define BYT_INT_STAT_REG 0x800
+#define BYT_DEBOUNCE_REG 0x9d0
+
+/* BYT_CONF0_REG register bits */
+#define BYT_IODEN BIT(31)
+#define BYT_DIRECT_IRQ_EN BIT(27)
+#define BYT_TRIG_NEG BIT(26)
+#define BYT_TRIG_POS BIT(25)
+#define BYT_TRIG_LVL BIT(24)
+#define BYT_DEBOUNCE_EN BIT(20)
+#define BYT_GLITCH_FILTER_EN BIT(19)
+#define BYT_GLITCH_F_SLOW_CLK BIT(17)
+#define BYT_GLITCH_F_FAST_CLK BIT(16)
+#define BYT_PULL_STR_SHIFT 9
+#define BYT_PULL_STR_MASK (3 << BYT_PULL_STR_SHIFT)
+#define BYT_PULL_STR_2K (0 << BYT_PULL_STR_SHIFT)
+#define BYT_PULL_STR_10K (1 << BYT_PULL_STR_SHIFT)
+#define BYT_PULL_STR_20K (2 << BYT_PULL_STR_SHIFT)
+#define BYT_PULL_STR_40K (3 << BYT_PULL_STR_SHIFT)
+#define BYT_PULL_ASSIGN_SHIFT 7
+#define BYT_PULL_ASSIGN_MASK (3 << BYT_PULL_ASSIGN_SHIFT)
+#define BYT_PULL_ASSIGN_UP (1 << BYT_PULL_ASSIGN_SHIFT)
+#define BYT_PULL_ASSIGN_DOWN (2 << BYT_PULL_ASSIGN_SHIFT)
+#define BYT_PIN_MUX 0x07
+
+/* BYT_VAL_REG register bits */
+#define BYT_INPUT_EN BIT(2) /* 0: input enabled (active low)*/
+#define BYT_OUTPUT_EN BIT(1) /* 0: output enabled (active low)*/
+#define BYT_LEVEL BIT(0)
+
+#define BYT_DIR_MASK (BIT(1) | BIT(2))
+#define BYT_TRIG_MASK (BIT(26) | BIT(25) | BIT(24))
+
+#define BYT_CONF0_RESTORE_MASK (BYT_DIRECT_IRQ_EN | BYT_TRIG_MASK | \
+ BYT_PIN_MUX)
+#define BYT_VAL_RESTORE_MASK (BYT_DIR_MASK | BYT_LEVEL)
+
+/* BYT_DEBOUNCE_REG bits */
+#define BYT_DEBOUNCE_PULSE_MASK 0x7
+#define BYT_DEBOUNCE_PULSE_375US 1
+#define BYT_DEBOUNCE_PULSE_750US 2
+#define BYT_DEBOUNCE_PULSE_1500US 3
+#define BYT_DEBOUNCE_PULSE_3MS 4
+#define BYT_DEBOUNCE_PULSE_6MS 5
+#define BYT_DEBOUNCE_PULSE_12MS 6
+#define BYT_DEBOUNCE_PULSE_24MS 7
+
+#define BYT_NGPIO_SCORE 102
+#define BYT_NGPIO_NCORE 28
+#define BYT_NGPIO_SUS 44
+
+#define BYT_SCORE_ACPI_UID "1"
+#define BYT_NCORE_ACPI_UID "2"
+#define BYT_SUS_ACPI_UID "3"
+
+/*
+ * This is the function value most pins have for GPIO muxing. If the value
+ * differs from the default one, it must be explicitly mentioned. Otherwise, the
+ * pin control implementation will set the muxing value to default GPIO if it
+ * does not find a match for the requested function.
+ */
+#define BYT_DEFAULT_GPIO_MUX 0
+
+struct byt_gpio_pin_context {
+ u32 conf0;
+ u32 val;
+};
+
+struct byt_simple_func_mux {
+ const char *name;
+ unsigned short func;
+};
+
+struct byt_mixed_func_mux {
+ const char *name;
+ const unsigned short *func_values;
+};
+
+struct byt_pingroup {
+ const char *name;
+ const unsigned int *pins;
+ size_t npins;
+ unsigned short has_simple_funcs;
+ union {
+ const struct byt_simple_func_mux *simple_funcs;
+ const struct byt_mixed_func_mux *mixed_funcs;
+ };
+ size_t nfuncs;
+};
+
+struct byt_function {
+ const char *name;
+ const char * const *groups;
+ size_t ngroups;
+};
+
+struct byt_community {
+ unsigned int pin_base;
+ size_t npins;
+ const unsigned int *pad_map;
+ void __iomem *reg_base;
+};
+
+#define SIMPLE_FUNC(n, f) \
+ { \
+ .name = (n), \
+ .func = (f), \
+ }
+#define MIXED_FUNC(n, f) \
+ { \
+ .name = (n), \
+ .func_values = (f), \
+ }
+
+#define PIN_GROUP_SIMPLE(n, p, f) \
+ { \
+ .name = (n), \
+ .pins = (p), \
+ .npins = ARRAY_SIZE((p)), \
+ .has_simple_funcs = 1, \
+ { \
+ .simple_funcs = (f), \
+ }, \
+ .nfuncs = ARRAY_SIZE((f)), \
+ }
+#define PIN_GROUP_MIXED(n, p, f) \
+ { \
+ .name = (n), \
+ .pins = (p), \
+ .npins = ARRAY_SIZE((p)), \
+ .has_simple_funcs = 0, \
+ { \
+ .mixed_funcs = (f), \
+ }, \
+ .nfuncs = ARRAY_SIZE((f)), \
+ }
+
+#define FUNCTION(n, g) \
+ { \
+ .name = (n), \
+ .groups = (g), \
+ .ngroups = ARRAY_SIZE((g)), \
+ }
+
+#define COMMUNITY(p, n, map) \
+ { \
+ .pin_base = (p), \
+ .npins = (n), \
+ .pad_map = (map),\
+ }
+
+struct byt_pinctrl_soc_data {
+ const char *uid;
+ const struct pinctrl_pin_desc *pins;
+ size_t npins;
+ const struct byt_pingroup *groups;
+ size_t ngroups;
+ const struct byt_function *functions;
+ size_t nfunctions;
+ const struct byt_community *communities;
+ size_t ncommunities;
+};
+
+struct byt_gpio {
+ struct gpio_chip chip;
+ struct platform_device *pdev;
+ struct pinctrl_dev *pctl_dev;
+ struct pinctrl_desc pctl_desc;
+ const struct byt_pinctrl_soc_data *soc_data;
+ struct byt_community *communities_copy;
+ struct byt_gpio_pin_context *saved_context;
+};
+
+/* SCORE pins, aka GPIOC_<pin_no> or GPIO_S0_SC[<pin_no>] */
+static const struct pinctrl_pin_desc byt_score_pins[] = {
+ PINCTRL_PIN(0, "SATA_GP0"),
+ PINCTRL_PIN(1, "SATA_GP1"),
+ PINCTRL_PIN(2, "SATA_LED#"),
+ PINCTRL_PIN(3, "PCIE_CLKREQ0"),
+ PINCTRL_PIN(4, "PCIE_CLKREQ1"),
+ PINCTRL_PIN(5, "PCIE_CLKREQ2"),
+ PINCTRL_PIN(6, "PCIE_CLKREQ3"),
+ PINCTRL_PIN(7, "SD3_WP"),
+ PINCTRL_PIN(8, "HDA_RST"),
+ PINCTRL_PIN(9, "HDA_SYNC"),
+ PINCTRL_PIN(10, "HDA_CLK"),
+ PINCTRL_PIN(11, "HDA_SDO"),
+ PINCTRL_PIN(12, "HDA_SDI0"),
+ PINCTRL_PIN(13, "HDA_SDI1"),
+ PINCTRL_PIN(14, "GPIO_S0_SC14"),
+ PINCTRL_PIN(15, "GPIO_S0_SC15"),
+ PINCTRL_PIN(16, "MMC1_CLK"),
+ PINCTRL_PIN(17, "MMC1_D0"),
+ PINCTRL_PIN(18, "MMC1_D1"),
+ PINCTRL_PIN(19, "MMC1_D2"),
+ PINCTRL_PIN(20, "MMC1_D3"),
+ PINCTRL_PIN(21, "MMC1_D4"),
+ PINCTRL_PIN(22, "MMC1_D5"),
+ PINCTRL_PIN(23, "MMC1_D6"),
+ PINCTRL_PIN(24, "MMC1_D7"),
+ PINCTRL_PIN(25, "MMC1_CMD"),
+ PINCTRL_PIN(26, "MMC1_RST"),
+ PINCTRL_PIN(27, "SD2_CLK"),
+ PINCTRL_PIN(28, "SD2_D0"),
+ PINCTRL_PIN(29, "SD2_D1"),
+ PINCTRL_PIN(30, "SD2_D2"),
+ PINCTRL_PIN(31, "SD2_D3_CD"),
+ PINCTRL_PIN(32, "SD2_CMD"),
+ PINCTRL_PIN(33, "SD3_CLK"),
+ PINCTRL_PIN(34, "SD3_D0"),
+ PINCTRL_PIN(35, "SD3_D1"),
+ PINCTRL_PIN(36, "SD3_D2"),
+ PINCTRL_PIN(37, "SD3_D3"),
+ PINCTRL_PIN(38, "SD3_CD"),
+ PINCTRL_PIN(39, "SD3_CMD"),
+ PINCTRL_PIN(40, "SD3_1P8EN"),
+ PINCTRL_PIN(41, "SD3_PWREN#"),
+ PINCTRL_PIN(42, "ILB_LPC_AD0"),
+ PINCTRL_PIN(43, "ILB_LPC_AD1"),
+ PINCTRL_PIN(44, "ILB_LPC_AD2"),
+ PINCTRL_PIN(45, "ILB_LPC_AD3"),
+ PINCTRL_PIN(46, "ILB_LPC_FRAME"),
+ PINCTRL_PIN(47, "ILB_LPC_CLK0"),
+ PINCTRL_PIN(48, "ILB_LPC_CLK1"),
+ PINCTRL_PIN(49, "ILB_LPC_CLKRUN"),
+ PINCTRL_PIN(50, "ILB_LPC_SERIRQ"),
+ PINCTRL_PIN(51, "PCU_SMB_DATA"),
+ PINCTRL_PIN(52, "PCU_SMB_CLK"),
+ PINCTRL_PIN(53, "PCU_SMB_ALERT"),
+ PINCTRL_PIN(54, "ILB_8254_SPKR"),
+ PINCTRL_PIN(55, "GPIO_S0_SC55"),
+ PINCTRL_PIN(56, "GPIO_S0_SC56"),
+ PINCTRL_PIN(57, "GPIO_S0_SC57"),
+ PINCTRL_PIN(58, "GPIO_S0_SC58"),
+ PINCTRL_PIN(59, "GPIO_S0_SC59"),
+ PINCTRL_PIN(60, "GPIO_S0_SC60"),
+ PINCTRL_PIN(61, "GPIO_S0_SC61"),
+ PINCTRL_PIN(62, "LPE_I2S2_CLK"),
+ PINCTRL_PIN(63, "LPE_I2S2_FRM"),
+ PINCTRL_PIN(64, "LPE_I2S2_DATAIN"),
+ PINCTRL_PIN(65, "LPE_I2S2_DATAOUT"),
+ PINCTRL_PIN(66, "SIO_SPI_CS"),
+ PINCTRL_PIN(67, "SIO_SPI_MISO"),
+ PINCTRL_PIN(68, "SIO_SPI_MOSI"),
+ PINCTRL_PIN(69, "SIO_SPI_CLK"),
+ PINCTRL_PIN(70, "SIO_UART1_RXD"),
+ PINCTRL_PIN(71, "SIO_UART1_TXD"),
+ PINCTRL_PIN(72, "SIO_UART1_RTS"),
+ PINCTRL_PIN(73, "SIO_UART1_CTS"),
+ PINCTRL_PIN(74, "SIO_UART2_RXD"),
+ PINCTRL_PIN(75, "SIO_UART2_TXD"),
+ PINCTRL_PIN(76, "SIO_UART2_RTS"),
+ PINCTRL_PIN(77, "SIO_UART2_CTS"),
+ PINCTRL_PIN(78, "SIO_I2C0_DATA"),
+ PINCTRL_PIN(79, "SIO_I2C0_CLK"),
+ PINCTRL_PIN(80, "SIO_I2C1_DATA"),
+ PINCTRL_PIN(81, "SIO_I2C1_CLK"),
+ PINCTRL_PIN(82, "SIO_I2C2_DATA"),
+ PINCTRL_PIN(83, "SIO_I2C2_CLK"),
+ PINCTRL_PIN(84, "SIO_I2C3_DATA"),
+ PINCTRL_PIN(85, "SIO_I2C3_CLK"),
+ PINCTRL_PIN(86, "SIO_I2C4_DATA"),
+ PINCTRL_PIN(87, "SIO_I2C4_CLK"),
+ PINCTRL_PIN(88, "SIO_I2C5_DATA"),
+ PINCTRL_PIN(89, "SIO_I2C5_CLK"),
+ PINCTRL_PIN(90, "SIO_I2C6_DATA"),
+ PINCTRL_PIN(91, "SIO_I2C6_CLK"),
+ PINCTRL_PIN(92, "GPIO_S0_SC92"),
+ PINCTRL_PIN(93, "GPIO_S0_SC93"),
+ PINCTRL_PIN(94, "SIO_PWM0"),
+ PINCTRL_PIN(95, "SIO_PWM1"),
+ PINCTRL_PIN(96, "PMC_PLT_CLK0"),
+ PINCTRL_PIN(97, "PMC_PLT_CLK1"),
+ PINCTRL_PIN(98, "PMC_PLT_CLK2"),
+ PINCTRL_PIN(99, "PMC_PLT_CLK3"),
+ PINCTRL_PIN(100, "PMC_PLT_CLK4"),
+ PINCTRL_PIN(101, "PMC_PLT_CLK5"),
+};
+
+static const unsigned int byt_score_pins_map[BYT_NGPIO_SCORE] = {
+ 85, 89, 93, 96, 99, 102, 98, 101, 34, 37,
+ 36, 38, 39, 35, 40, 84, 62, 61, 64, 59,
+ 54, 56, 60, 55, 63, 57, 51, 50, 53, 47,
+ 52, 49, 48, 43, 46, 41, 45, 42, 58, 44,
+ 95, 105, 70, 68, 67, 66, 69, 71, 65, 72,
+ 86, 90, 88, 92, 103, 77, 79, 83, 78, 81,
+ 80, 82, 13, 12, 15, 14, 17, 18, 19, 16,
+ 2, 1, 0, 4, 6, 7, 9, 8, 33, 32,
+ 31, 30, 29, 27, 25, 28, 26, 23, 21, 20,
+ 24, 22, 5, 3, 10, 11, 106, 87, 91, 104,
+ 97, 100,
+};
+
+/* SCORE groups */
+static const unsigned int byt_score_uart1_pins[] = { 70, 71, 72, 73 };
+static const unsigned int byt_score_uart2_pins[] = { 74, 75, 76, 77 };
+static const struct byt_simple_func_mux byt_score_uart_mux[] = {
+ SIMPLE_FUNC("uart", 1),
+};
+
+static const unsigned int byt_score_pwm0_pins[] = { 94 };
+static const unsigned int byt_score_pwm1_pins[] = { 95 };
+static const struct byt_simple_func_mux byt_score_pwm_mux[] = {
+ SIMPLE_FUNC("pwm", 1),
+};
+
+static const unsigned int byt_score_sio_spi_pins[] = { 66, 67, 68, 69 };
+static const struct byt_simple_func_mux byt_score_spi_mux[] = {
+ SIMPLE_FUNC("spi", 1),
+};
+
+static const unsigned int byt_score_i2c5_pins[] = { 88, 89 };
+static const unsigned int byt_score_i2c6_pins[] = { 90, 91 };
+static const unsigned int byt_score_i2c4_pins[] = { 86, 87 };
+static const unsigned int byt_score_i2c3_pins[] = { 84, 85 };
+static const unsigned int byt_score_i2c2_pins[] = { 82, 83 };
+static const unsigned int byt_score_i2c1_pins[] = { 80, 81 };
+static const unsigned int byt_score_i2c0_pins[] = { 78, 79 };
+static const struct byt_simple_func_mux byt_score_i2c_mux[] = {
+ SIMPLE_FUNC("i2c", 1),
+};
+
+static const unsigned int byt_score_ssp0_pins[] = { 8, 9, 10, 11 };
+static const unsigned int byt_score_ssp1_pins[] = { 12, 13, 14, 15 };
+static const unsigned int byt_score_ssp2_pins[] = { 62, 63, 64, 65 };
+static const struct byt_simple_func_mux byt_score_ssp_mux[] = {
+ SIMPLE_FUNC("ssp", 1),
+};
+
+static const unsigned int byt_score_sdcard_pins[] = {
+ 7, 33, 34, 35, 36, 37, 38, 39, 40, 41,
+};
+static const unsigned short byt_score_sdcard_mux_values[] = {
+ 2, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+};
+static const struct byt_mixed_func_mux byt_score_sdcard_mux[] = {
+ MIXED_FUNC("sdcard", byt_score_sdcard_mux_values),
+};
+
+static const unsigned int byt_score_sdio_pins[] = { 27, 28, 29, 30, 31, 32 };
+static const struct byt_simple_func_mux byt_score_sdio_mux[] = {
+ SIMPLE_FUNC("sdio", 1),
+};
+
+static const unsigned int byt_score_emmc_pins[] = {
+ 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
+};
+static const struct byt_simple_func_mux byt_score_emmc_mux[] = {
+ SIMPLE_FUNC("emmc", 1),
+};
+
+static const unsigned int byt_score_ilb_lpc_pins[] = {
+ 42, 43, 44, 45, 46, 47, 48, 49, 50,
+};
+static const struct byt_simple_func_mux byt_score_lpc_mux[] = {
+ SIMPLE_FUNC("lpc", 1),
+};
+
+static const unsigned int byt_score_sata_pins[] = { 0, 1, 2 };
+static const struct byt_simple_func_mux byt_score_sata_mux[] = {
+ SIMPLE_FUNC("sata", 1),
+};
+
+static const unsigned int byt_score_plt_clk0_pins[] = { 96 };
+static const unsigned int byt_score_plt_clk1_pins[] = { 97 };
+static const unsigned int byt_score_plt_clk2_pins[] = { 98 };
+static const unsigned int byt_score_plt_clk3_pins[] = { 99 };
+static const unsigned int byt_score_plt_clk4_pins[] = { 100 };
+static const unsigned int byt_score_plt_clk5_pins[] = { 101 };
+static const struct byt_simple_func_mux byt_score_plt_clk_mux[] = {
+ SIMPLE_FUNC("plt_clk", 1),
+};
+
+static const unsigned int byt_score_smbus_pins[] = { 51, 52, 53 };
+static const struct byt_simple_func_mux byt_score_smbus_mux[] = {
+ SIMPLE_FUNC("smbus", 1),
+};
+
+static const struct byt_pingroup byt_score_groups[] = {
+ PIN_GROUP_SIMPLE("uart1_grp",
+ byt_score_uart1_pins, byt_score_uart_mux),
+ PIN_GROUP_SIMPLE("uart2_grp",
+ byt_score_uart2_pins, byt_score_uart_mux),
+ PIN_GROUP_SIMPLE("pwm0_grp",
+ byt_score_pwm0_pins, byt_score_pwm_mux),
+ PIN_GROUP_SIMPLE("pwm1_grp",
+ byt_score_pwm1_pins, byt_score_pwm_mux),
+ PIN_GROUP_SIMPLE("ssp2_grp",
+ byt_score_ssp2_pins, byt_score_pwm_mux),
+ PIN_GROUP_SIMPLE("sio_spi_grp",
+ byt_score_sio_spi_pins, byt_score_spi_mux),
+ PIN_GROUP_SIMPLE("i2c5_grp",
+ byt_score_i2c5_pins, byt_score_i2c_mux),
+ PIN_GROUP_SIMPLE("i2c6_grp",
+ byt_score_i2c6_pins, byt_score_i2c_mux),
+ PIN_GROUP_SIMPLE("i2c4_grp",
+ byt_score_i2c4_pins, byt_score_i2c_mux),
+ PIN_GROUP_SIMPLE("i2c3_grp",
+ byt_score_i2c3_pins, byt_score_i2c_mux),
+ PIN_GROUP_SIMPLE("i2c2_grp",
+ byt_score_i2c2_pins, byt_score_i2c_mux),
+ PIN_GROUP_SIMPLE("i2c1_grp",
+ byt_score_i2c1_pins, byt_score_i2c_mux),
+ PIN_GROUP_SIMPLE("i2c0_grp",
+ byt_score_i2c0_pins, byt_score_i2c_mux),
+ PIN_GROUP_SIMPLE("ssp0_grp",
+ byt_score_ssp0_pins, byt_score_ssp_mux),
+ PIN_GROUP_SIMPLE("ssp1_grp",
+ byt_score_ssp1_pins, byt_score_ssp_mux),
+ PIN_GROUP_MIXED("sdcard_grp",
+ byt_score_sdcard_pins, byt_score_sdcard_mux),
+ PIN_GROUP_SIMPLE("sdio_grp",
+ byt_score_sdio_pins, byt_score_sdio_mux),
+ PIN_GROUP_SIMPLE("emmc_grp",
+ byt_score_emmc_pins, byt_score_emmc_mux),
+ PIN_GROUP_SIMPLE("lpc_grp",
+ byt_score_ilb_lpc_pins, byt_score_lpc_mux),
+ PIN_GROUP_SIMPLE("sata_grp",
+ byt_score_sata_pins, byt_score_sata_mux),
+ PIN_GROUP_SIMPLE("plt_clk0_grp",
+ byt_score_plt_clk0_pins, byt_score_plt_clk_mux),
+ PIN_GROUP_SIMPLE("plt_clk1_grp",
+ byt_score_plt_clk1_pins, byt_score_plt_clk_mux),
+ PIN_GROUP_SIMPLE("plt_clk2_grp",
+ byt_score_plt_clk2_pins, byt_score_plt_clk_mux),
+ PIN_GROUP_SIMPLE("plt_clk3_grp",
+ byt_score_plt_clk3_pins, byt_score_plt_clk_mux),
+ PIN_GROUP_SIMPLE("plt_clk4_grp",
+ byt_score_plt_clk4_pins, byt_score_plt_clk_mux),
+ PIN_GROUP_SIMPLE("plt_clk5_grp",
+ byt_score_plt_clk5_pins, byt_score_plt_clk_mux),
+ PIN_GROUP_SIMPLE("smbus_grp",
+ byt_score_smbus_pins, byt_score_smbus_mux),
+};
+
+static const char * const byt_score_uart_groups[] = {
+ "uart1_grp", "uart2_grp",
+};
+static const char * const byt_score_pwm_groups[] = {
+ "pwm0_grp", "pwm1_grp",
+};
+static const char * const byt_score_ssp_groups[] = {
+ "ssp0_grp", "ssp1_grp", "ssp2_grp",
+};
+static const char * const byt_score_spi_groups[] = { "sio_spi_grp" };
+static const char * const byt_score_i2c_groups[] = {
+ "i2c0_grp", "i2c1_grp", "i2c2_grp", "i2c3_grp", "i2c4_grp", "i2c5_grp",
+ "i2c6_grp",
+};
+static const char * const byt_score_sdcard_groups[] = { "sdcard_grp" };
+static const char * const byt_score_sdio_groups[] = { "sdio_grp" };
+static const char * const byt_score_emmc_groups[] = { "emmc_grp" };
+static const char * const byt_score_lpc_groups[] = { "lpc_grp" };
+static const char * const byt_score_sata_groups[] = { "sata_grp" };
+static const char * const byt_score_plt_clk_groups[] = {
+ "plt_clk0_grp", "plt_clk1_grp", "plt_clk2_grp", "plt_clk3_grp",
+ "plt_clk4_grp", "plt_clk5_grp",
+};
+static const char * const byt_score_smbus_groups[] = { "smbus_grp" };
+static const char * const byt_score_gpio_groups[] = {
+ "uart1_grp", "uart2_grp", "pwm0_grp", "pwm1_grp", "ssp0_grp",
+ "ssp1_grp", "ssp2_grp", "sio_spi_grp", "i2c0_grp", "i2c1_grp",
+ "i2c2_grp", "i2c3_grp", "i2c4_grp", "i2c5_grp", "i2c6_grp",
+ "sdcard_grp", "sdio_grp", "emmc_grp", "lpc_grp", "sata_grp",
+ "plt_clk0_grp", "plt_clk1_grp", "plt_clk2_grp", "plt_clk3_grp",
+ "plt_clk4_grp", "plt_clk5_grp", "smbus_grp",
+
+};
+
+static const struct byt_function byt_score_functions[] = {
+ FUNCTION("uart", byt_score_uart_groups),
+ FUNCTION("pwm", byt_score_pwm_groups),
+ FUNCTION("ssp", byt_score_ssp_groups),
+ FUNCTION("spi", byt_score_spi_groups),
+ FUNCTION("i2c", byt_score_i2c_groups),
+ FUNCTION("sdcard", byt_score_sdcard_groups),
+ FUNCTION("sdio", byt_score_sdio_groups),
+ FUNCTION("emmc", byt_score_emmc_groups),
+ FUNCTION("lpc", byt_score_lpc_groups),
+ FUNCTION("sata", byt_score_sata_groups),
+ FUNCTION("plt_clk", byt_score_plt_clk_groups),
+ FUNCTION("smbus", byt_score_smbus_groups),
+ FUNCTION("gpio", byt_score_gpio_groups),
+};
+
+static const struct byt_community byt_score_communities[] = {
+ COMMUNITY(0, BYT_NGPIO_SCORE, byt_score_pins_map),
+};
+
+static const struct byt_pinctrl_soc_data byt_score_soc_data = {
+ .uid = BYT_SCORE_ACPI_UID,
+ .pins = byt_score_pins,
+ .npins = ARRAY_SIZE(byt_score_pins),
+ .groups = byt_score_groups,
+ .ngroups = ARRAY_SIZE(byt_score_groups),
+ .functions = byt_score_functions,
+ .nfunctions = ARRAY_SIZE(byt_score_functions),
+ .communities = byt_score_communities,
+ .ncommunities = ARRAY_SIZE(byt_score_communities),
+};
+
+/* SUS pins, aka GPIOS_<pin_no> or GPIO_S5[<pin_no>] */
+static const struct pinctrl_pin_desc byt_sus_pins[] = {
+ PINCTRL_PIN(0, "GPIO_S50"),
+ PINCTRL_PIN(1, "GPIO_S51"),
+ PINCTRL_PIN(2, "GPIO_S52"),
+ PINCTRL_PIN(3, "GPIO_S53"),
+ PINCTRL_PIN(4, "GPIO_S54"),
+ PINCTRL_PIN(5, "GPIO_S55"),
+ PINCTRL_PIN(6, "GPIO_S56"),
+ PINCTRL_PIN(7, "GPIO_S57"),
+ PINCTRL_PIN(8, "GPIO_S58"),
+ PINCTRL_PIN(9, "GPIO_S59"),
+ PINCTRL_PIN(10, "GPIO_S510"),
+ PINCTRL_PIN(11, "PMC_SUSPWRDNACK"),
+ PINCTRL_PIN(12, "PMC_SUSCLK0"),
+ PINCTRL_PIN(13, "GPIO_S513"),
+ PINCTRL_PIN(14, "USB_ULPI_RST"),
+ PINCTRL_PIN(15, "PMC_WAKE_PCIE0#"),
+ PINCTRL_PIN(16, "PMC_PWRBTN"),
+ PINCTRL_PIN(17, "GPIO_S517"),
+ PINCTRL_PIN(18, "PMC_SUS_STAT"),
+ PINCTRL_PIN(19, "USB_OC0"),
+ PINCTRL_PIN(20, "USB_OC1"),
+ PINCTRL_PIN(21, "PCU_SPI_CS1"),
+ PINCTRL_PIN(22, "GPIO_S522"),
+ PINCTRL_PIN(23, "GPIO_S523"),
+ PINCTRL_PIN(24, "GPIO_S524"),
+ PINCTRL_PIN(25, "GPIO_S525"),
+ PINCTRL_PIN(26, "GPIO_S526"),
+ PINCTRL_PIN(27, "GPIO_S527"),
+ PINCTRL_PIN(28, "GPIO_S528"),
+ PINCTRL_PIN(29, "GPIO_S529"),
+ PINCTRL_PIN(30, "GPIO_S530"),
+ PINCTRL_PIN(31, "USB_ULPI_CLK"),
+ PINCTRL_PIN(32, "USB_ULPI_DATA0"),
+ PINCTRL_PIN(33, "USB_ULPI_DATA1"),
+ PINCTRL_PIN(34, "USB_ULPI_DATA2"),
+ PINCTRL_PIN(35, "USB_ULPI_DATA3"),
+ PINCTRL_PIN(36, "USB_ULPI_DATA4"),
+ PINCTRL_PIN(37, "USB_ULPI_DATA5"),
+ PINCTRL_PIN(38, "USB_ULPI_DATA6"),
+ PINCTRL_PIN(39, "USB_ULPI_DATA7"),
+ PINCTRL_PIN(40, "USB_ULPI_DIR"),
+ PINCTRL_PIN(41, "USB_ULPI_NXT"),
+ PINCTRL_PIN(42, "USB_ULPI_STP"),
+ PINCTRL_PIN(43, "USB_ULPI_REFCLK"),
+};
+
+static const unsigned int byt_sus_pins_map[BYT_NGPIO_SUS] = {
+ 29, 33, 30, 31, 32, 34, 36, 35, 38, 37,
+ 18, 7, 11, 20, 17, 1, 8, 10, 19, 12,
+ 0, 2, 23, 39, 28, 27, 22, 21, 24, 25,
+ 26, 51, 56, 54, 49, 55, 48, 57, 50, 58,
+ 52, 53, 59, 40,
+};
+
+static const unsigned int byt_sus_usb_over_current_pins[] = { 19, 20 };
+static const struct byt_simple_func_mux byt_sus_usb_oc_mux[] = {
+ SIMPLE_FUNC("usb", 0),
+ SIMPLE_FUNC("gpio", 1),
+};
+
+static const unsigned int byt_sus_usb_ulpi_pins[] = {
+ 14, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43,
+};
+static const unsigned short byt_sus_usb_ulpi_mode_values[] = {
+ 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+};
+static const unsigned short byt_sus_usb_ulpi_gpio_mode_values[] = {
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+static const struct byt_mixed_func_mux byt_sus_usb_ulpi_mux[] = {
+ MIXED_FUNC("usb", byt_sus_usb_ulpi_mode_values),
+ MIXED_FUNC("gpio", byt_sus_usb_ulpi_gpio_mode_values),
+};
+
+static const unsigned int byt_sus_pcu_spi_pins[] = { 21 };
+static const struct byt_simple_func_mux byt_sus_pcu_spi_mux[] = {
+ SIMPLE_FUNC("spi", 0),
+ SIMPLE_FUNC("gpio", 1),
+};
+
+static const struct byt_pingroup byt_sus_groups[] = {
+ PIN_GROUP_SIMPLE("usb_oc_grp",
+ byt_sus_usb_over_current_pins, byt_sus_usb_oc_mux),
+ PIN_GROUP_MIXED("usb_ulpi_grp",
+ byt_sus_usb_ulpi_pins, byt_sus_usb_ulpi_mux),
+ PIN_GROUP_SIMPLE("pcu_spi_grp",
+ byt_sus_pcu_spi_pins, byt_sus_pcu_spi_mux),
+};
+
+static const char * const byt_sus_usb_groups[] = {
+ "usb_oc_grp", "usb_ulpi_grp",
+};
+static const char * const byt_sus_spi_groups[] = { "pcu_spi_grp" };
+static const char * const byt_sus_gpio_groups[] = {
+ "usb_oc_grp", "usb_ulpi_grp", "pcu_spi_grp",
+};
+
+static const struct byt_function byt_sus_functions[] = {
+ FUNCTION("usb", byt_sus_usb_groups),
+ FUNCTION("spi", byt_sus_spi_groups),
+ FUNCTION("gpio", byt_sus_gpio_groups),
+};
+
+static const struct byt_community byt_sus_communities[] = {
+ COMMUNITY(0, BYT_NGPIO_SUS, byt_sus_pins_map),
+};
+
+static const struct byt_pinctrl_soc_data byt_sus_soc_data = {
+ .uid = BYT_SUS_ACPI_UID,
+ .pins = byt_sus_pins,
+ .npins = ARRAY_SIZE(byt_sus_pins),
+ .groups = byt_sus_groups,
+ .ngroups = ARRAY_SIZE(byt_sus_groups),
+ .functions = byt_sus_functions,
+ .nfunctions = ARRAY_SIZE(byt_sus_functions),
+ .communities = byt_sus_communities,
+ .ncommunities = ARRAY_SIZE(byt_sus_communities),
+};
+
+static const struct pinctrl_pin_desc byt_ncore_pins[] = {
+ PINCTRL_PIN(0, "GPIO_NCORE0"),
+ PINCTRL_PIN(1, "GPIO_NCORE1"),
+ PINCTRL_PIN(2, "GPIO_NCORE2"),
+ PINCTRL_PIN(3, "GPIO_NCORE3"),
+ PINCTRL_PIN(4, "GPIO_NCORE4"),
+ PINCTRL_PIN(5, "GPIO_NCORE5"),
+ PINCTRL_PIN(6, "GPIO_NCORE6"),
+ PINCTRL_PIN(7, "GPIO_NCORE7"),
+ PINCTRL_PIN(8, "GPIO_NCORE8"),
+ PINCTRL_PIN(9, "GPIO_NCORE9"),
+ PINCTRL_PIN(10, "GPIO_NCORE10"),
+ PINCTRL_PIN(11, "GPIO_NCORE11"),
+ PINCTRL_PIN(12, "GPIO_NCORE12"),
+ PINCTRL_PIN(13, "GPIO_NCORE13"),
+ PINCTRL_PIN(14, "GPIO_NCORE14"),
+ PINCTRL_PIN(15, "GPIO_NCORE15"),
+ PINCTRL_PIN(16, "GPIO_NCORE16"),
+ PINCTRL_PIN(17, "GPIO_NCORE17"),
+ PINCTRL_PIN(18, "GPIO_NCORE18"),
+ PINCTRL_PIN(19, "GPIO_NCORE19"),
+ PINCTRL_PIN(20, "GPIO_NCORE20"),
+ PINCTRL_PIN(21, "GPIO_NCORE21"),
+ PINCTRL_PIN(22, "GPIO_NCORE22"),
+ PINCTRL_PIN(23, "GPIO_NCORE23"),
+ PINCTRL_PIN(24, "GPIO_NCORE24"),
+ PINCTRL_PIN(25, "GPIO_NCORE25"),
+ PINCTRL_PIN(26, "GPIO_NCORE26"),
+ PINCTRL_PIN(27, "GPIO_NCORE27"),
+};
+
+static unsigned const byt_ncore_pins_map[BYT_NGPIO_NCORE] = {
+ 19, 18, 17, 20, 21, 22, 24, 25, 23, 16,
+ 14, 15, 12, 26, 27, 1, 4, 8, 11, 0,
+ 3, 6, 10, 13, 2, 5, 9, 7,
+};
+
+static const struct byt_community byt_ncore_communities[] = {
+ COMMUNITY(0, BYT_NGPIO_NCORE, byt_ncore_pins_map),
+};
+
+static const struct byt_pinctrl_soc_data byt_ncore_soc_data = {
+ .uid = BYT_NCORE_ACPI_UID,
+ .pins = byt_ncore_pins,
+ .npins = ARRAY_SIZE(byt_ncore_pins),
+ .communities = byt_ncore_communities,
+ .ncommunities = ARRAY_SIZE(byt_ncore_communities),
+};
+
+static const struct byt_pinctrl_soc_data *byt_soc_data[] = {
+ &byt_score_soc_data,
+ &byt_sus_soc_data,
+ &byt_ncore_soc_data,
+ NULL,
+};
+
+static DEFINE_RAW_SPINLOCK(byt_lock);
+
+static struct byt_community *byt_get_community(struct byt_gpio *vg,
+ unsigned int pin)
+{
+ struct byt_community *comm;
+ int i;
+
+ for (i = 0; i < vg->soc_data->ncommunities; i++) {
+ comm = vg->communities_copy + i;
+ if (pin < comm->pin_base + comm->npins && pin >= comm->pin_base)
+ return comm;
+ }
+
+ return NULL;
+}
+
+static void __iomem *byt_gpio_reg(struct byt_gpio *vg, unsigned int offset,
+ int reg)
+{
+ struct byt_community *comm = byt_get_community(vg, offset);
+ u32 reg_offset;
+
+ if (!comm)
+ return NULL;
+
+ offset -= comm->pin_base;
+ switch (reg) {
+ case BYT_INT_STAT_REG:
+ reg_offset = (offset / 32) * 4;
+ break;
+ case BYT_DEBOUNCE_REG:
+ reg_offset = 0;
+ break;
+ default:
+ reg_offset = comm->pad_map[offset] * 16;
+ break;
+ }
+
+ return comm->reg_base + reg_offset + reg;
+}
+
+static int byt_get_groups_count(struct pinctrl_dev *pctldev)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctldev);
+
+ return vg->soc_data->ngroups;
+}
+
+static const char *byt_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned int selector)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctldev);
+
+ return vg->soc_data->groups[selector].name;
+}
+
+static int byt_get_group_pins(struct pinctrl_dev *pctldev,
+ unsigned int selector,
+ const unsigned int **pins,
+ unsigned int *num_pins)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctldev);
+
+ *pins = vg->soc_data->groups[selector].pins;
+ *num_pins = vg->soc_data->groups[selector].npins;
+
+ return 0;
+}
+
+static const struct pinctrl_ops byt_pinctrl_ops = {
+ .get_groups_count = byt_get_groups_count,
+ .get_group_name = byt_get_group_name,
+ .get_group_pins = byt_get_group_pins,
+};
+
+static int byt_get_functions_count(struct pinctrl_dev *pctldev)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctldev);
+
+ return vg->soc_data->nfunctions;
+}
+
+static const char *byt_get_function_name(struct pinctrl_dev *pctldev,
+ unsigned int selector)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctldev);
+
+ return vg->soc_data->functions[selector].name;
+}
+
+static int byt_get_function_groups(struct pinctrl_dev *pctldev,
+ unsigned int selector,
+ const char * const **groups,
+ unsigned int *num_groups)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctldev);
+
+ *groups = vg->soc_data->functions[selector].groups;
+ *num_groups = vg->soc_data->functions[selector].ngroups;
+
+ return 0;
+}
+
+static int byt_get_group_simple_mux(const struct byt_pingroup group,
+ const char *func_name,
+ unsigned short *func)
+{
+ int i;
+
+ for (i = 0; i < group.nfuncs; i++) {
+ if (!strcmp(group.simple_funcs[i].name, func_name)) {
+ *func = group.simple_funcs[i].func;
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+static int byt_get_group_mixed_mux(const struct byt_pingroup group,
+ const char *func_name,
+ const unsigned short **func)
+{
+ int i;
+
+ for (i = 0; i < group.nfuncs; i++) {
+ if (!strcmp(group.mixed_funcs[i].name, func_name)) {
+ *func = group.mixed_funcs[i].func_values;
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+static void byt_set_group_simple_mux(struct byt_gpio *vg,
+ const struct byt_pingroup group,
+ unsigned short func)
+{
+ unsigned long flags;
+ int i;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+
+ for (i = 0; i < group.npins; i++) {
+ void __iomem *padcfg0;
+ u32 value;
+
+ padcfg0 = byt_gpio_reg(vg, group.pins[i], BYT_CONF0_REG);
+ if (!padcfg0) {
+ dev_warn(&vg->pdev->dev,
+ "Group %s, pin %i not muxed (no padcfg0)\n",
+ group.name, i);
+ continue;
+ }
+
+ value = readl(padcfg0);
+ value &= ~BYT_PIN_MUX;
+ value |= func;
+ writel(value, padcfg0);
+ }
+
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+}
+
+static void byt_set_group_mixed_mux(struct byt_gpio *vg,
+ const struct byt_pingroup group,
+ const unsigned short *func)
+{
+ unsigned long flags;
+ int i;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+
+ for (i = 0; i < group.npins; i++) {
+ void __iomem *padcfg0;
+ u32 value;
+
+ padcfg0 = byt_gpio_reg(vg, group.pins[i], BYT_CONF0_REG);
+ if (!padcfg0) {
+ dev_warn(&vg->pdev->dev,
+ "Group %s, pin %i not muxed (no padcfg0)\n",
+ group.name, i);
+ continue;
+ }
+
+ value = readl(padcfg0);
+ value &= ~BYT_PIN_MUX;
+ value |= func[i];
+ writel(value, padcfg0);
+ }
+
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+}
+
+static int byt_set_mux(struct pinctrl_dev *pctldev, unsigned int func_selector,
+ unsigned int group_selector)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctldev);
+ const struct byt_function func = vg->soc_data->functions[func_selector];
+ const struct byt_pingroup group = vg->soc_data->groups[group_selector];
+ const unsigned short *mixed_func;
+ unsigned short simple_func;
+ int ret = 1;
+
+ if (group.has_simple_funcs)
+ ret = byt_get_group_simple_mux(group, func.name, &simple_func);
+ else
+ ret = byt_get_group_mixed_mux(group, func.name, &mixed_func);
+
+ if (ret)
+ byt_set_group_simple_mux(vg, group, BYT_DEFAULT_GPIO_MUX);
+ else if (group.has_simple_funcs)
+ byt_set_group_simple_mux(vg, group, simple_func);
+ else
+ byt_set_group_mixed_mux(vg, group, mixed_func);
+
+ return 0;
+}
+
+static u32 byt_get_gpio_mux(struct byt_gpio *vg, unsigned offset)
+{
+ /* SCORE pin 92-93 */
+ if (!strcmp(vg->soc_data->uid, BYT_SCORE_ACPI_UID) &&
+ offset >= 92 && offset <= 93)
+ return 1;
+
+ /* SUS pin 11-21 */
+ if (!strcmp(vg->soc_data->uid, BYT_SUS_ACPI_UID) &&
+ offset >= 11 && offset <= 21)
+ return 1;
+
+ return 0;
+}
+
+static void byt_gpio_clear_triggering(struct byt_gpio *vg, unsigned int offset)
+{
+ void __iomem *reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG);
+ unsigned long flags;
+ u32 value;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+ value = readl(reg);
+ value &= ~(BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL);
+ writel(value, reg);
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+}
+
+static int byt_gpio_request_enable(struct pinctrl_dev *pctl_dev,
+ struct pinctrl_gpio_range *range,
+ unsigned int offset)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctl_dev);
+ void __iomem *reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG);
+ u32 value, gpio_mux;
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+
+ /*
+ * In most cases, func pin mux 000 means GPIO function.
+ * But, some pins may have func pin mux 001 represents
+ * GPIO function.
+ *
+ * Because there are devices out there where some pins were not
+ * configured correctly we allow changing the mux value from
+ * request (but print out warning about that).
+ */
+ value = readl(reg) & BYT_PIN_MUX;
+ gpio_mux = byt_get_gpio_mux(vg, offset);
+ if (gpio_mux != value) {
+ value = readl(reg) & ~BYT_PIN_MUX;
+ value |= gpio_mux;
+ writel(value, reg);
+
+ dev_warn(&vg->pdev->dev, FW_BUG
+ "pin %u forcibly re-configured as GPIO\n", offset);
+ }
+
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+
+ pm_runtime_get(&vg->pdev->dev);
+
+ return 0;
+}
+
+static void byt_gpio_disable_free(struct pinctrl_dev *pctl_dev,
+ struct pinctrl_gpio_range *range,
+ unsigned int offset)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctl_dev);
+
+ byt_gpio_clear_triggering(vg, offset);
+ pm_runtime_put(&vg->pdev->dev);
+}
+
+static int byt_gpio_set_direction(struct pinctrl_dev *pctl_dev,
+ struct pinctrl_gpio_range *range,
+ unsigned int offset,
+ bool input)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctl_dev);
+ void __iomem *val_reg = byt_gpio_reg(vg, offset, BYT_VAL_REG);
+ void __iomem *conf_reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG);
+ unsigned long flags;
+ u32 value;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+
+ value = readl(val_reg);
+ value &= ~BYT_DIR_MASK;
+ if (input)
+ value |= BYT_OUTPUT_EN;
+ else
+ /*
+ * Before making any direction modifications, do a check if gpio
+ * is set for direct IRQ. On baytrail, setting GPIO to output
+ * does not make sense, so let's at least warn the caller before
+ * they shoot themselves in the foot.
+ */
+ WARN(readl(conf_reg) & BYT_DIRECT_IRQ_EN,
+ "Potential Error: Setting GPIO with direct_irq_en to output");
+ writel(value, val_reg);
+
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+
+ return 0;
+}
+
+static const struct pinmux_ops byt_pinmux_ops = {
+ .get_functions_count = byt_get_functions_count,
+ .get_function_name = byt_get_function_name,
+ .get_function_groups = byt_get_function_groups,
+ .set_mux = byt_set_mux,
+ .gpio_request_enable = byt_gpio_request_enable,
+ .gpio_disable_free = byt_gpio_disable_free,
+ .gpio_set_direction = byt_gpio_set_direction,
+};
+
+static void byt_get_pull_strength(u32 reg, u16 *strength)
+{
+ switch (reg & BYT_PULL_STR_MASK) {
+ case BYT_PULL_STR_2K:
+ *strength = 2000;
+ break;
+ case BYT_PULL_STR_10K:
+ *strength = 10000;
+ break;
+ case BYT_PULL_STR_20K:
+ *strength = 20000;
+ break;
+ case BYT_PULL_STR_40K:
+ *strength = 40000;
+ break;
+ }
+}
+
+static int byt_set_pull_strength(u32 *reg, u16 strength)
+{
+ *reg &= ~BYT_PULL_STR_MASK;
+
+ switch (strength) {
+ case 2000:
+ *reg |= BYT_PULL_STR_2K;
+ break;
+ case 10000:
+ *reg |= BYT_PULL_STR_10K;
+ break;
+ case 20000:
+ *reg |= BYT_PULL_STR_20K;
+ break;
+ case 40000:
+ *reg |= BYT_PULL_STR_40K;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int byt_pin_config_get(struct pinctrl_dev *pctl_dev, unsigned int offset,
+ unsigned long *config)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctl_dev);
+ enum pin_config_param param = pinconf_to_config_param(*config);
+ void __iomem *conf_reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG);
+ void __iomem *val_reg = byt_gpio_reg(vg, offset, BYT_VAL_REG);
+ void __iomem *db_reg = byt_gpio_reg(vg, offset, BYT_DEBOUNCE_REG);
+ unsigned long flags;
+ u32 conf, pull, val, debounce;
+ u16 arg = 0;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+ conf = readl(conf_reg);
+ pull = conf & BYT_PULL_ASSIGN_MASK;
+ val = readl(val_reg);
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+ if (pull)
+ return -EINVAL;
+ break;
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ /* Pull assignment is only applicable in input mode */
+ if ((val & BYT_INPUT_EN) || pull != BYT_PULL_ASSIGN_DOWN)
+ return -EINVAL;
+
+ byt_get_pull_strength(conf, &arg);
+
+ break;
+ case PIN_CONFIG_BIAS_PULL_UP:
+ /* Pull assignment is only applicable in input mode */
+ if ((val & BYT_INPUT_EN) || pull != BYT_PULL_ASSIGN_UP)
+ return -EINVAL;
+
+ byt_get_pull_strength(conf, &arg);
+
+ break;
+ case PIN_CONFIG_INPUT_DEBOUNCE:
+ if (!(conf & BYT_DEBOUNCE_EN))
+ return -EINVAL;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+ debounce = readl(db_reg);
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+
+ switch (debounce & BYT_DEBOUNCE_PULSE_MASK) {
+ case BYT_DEBOUNCE_PULSE_375US:
+ arg = 375;
+ break;
+ case BYT_DEBOUNCE_PULSE_750US:
+ arg = 750;
+ break;
+ case BYT_DEBOUNCE_PULSE_1500US:
+ arg = 1500;
+ break;
+ case BYT_DEBOUNCE_PULSE_3MS:
+ arg = 3000;
+ break;
+ case BYT_DEBOUNCE_PULSE_6MS:
+ arg = 6000;
+ break;
+ case BYT_DEBOUNCE_PULSE_12MS:
+ arg = 12000;
+ break;
+ case BYT_DEBOUNCE_PULSE_24MS:
+ arg = 24000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ break;
+ default:
+ return -ENOTSUPP;
+ }
+
+ *config = pinconf_to_config_packed(param, arg);
+
+ return 0;
+}
+
+static int byt_pin_config_set(struct pinctrl_dev *pctl_dev,
+ unsigned int offset,
+ unsigned long *configs,
+ unsigned int num_configs)
+{
+ struct byt_gpio *vg = pinctrl_dev_get_drvdata(pctl_dev);
+ unsigned int param, arg;
+ void __iomem *conf_reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG);
+ void __iomem *val_reg = byt_gpio_reg(vg, offset, BYT_VAL_REG);
+ void __iomem *db_reg = byt_gpio_reg(vg, offset, BYT_DEBOUNCE_REG);
+ unsigned long flags;
+ u32 conf, val, debounce;
+ int i, ret = 0;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+
+ conf = readl(conf_reg);
+ val = readl(val_reg);
+
+ for (i = 0; i < num_configs; i++) {
+ param = pinconf_to_config_param(configs[i]);
+ arg = pinconf_to_config_argument(configs[i]);
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+ conf &= ~BYT_PULL_ASSIGN_MASK;
+ break;
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ /* Set default strength value in case none is given */
+ if (arg == 1)
+ arg = 2000;
+
+ /*
+ * Pull assignment is only applicable in input mode. If
+ * chip is not in input mode, set it and warn about it.
+ */
+ if (val & BYT_INPUT_EN) {
+ val &= ~BYT_INPUT_EN;
+ writel(val, val_reg);
+ dev_warn(&vg->pdev->dev,
+ "pin %u forcibly set to input mode\n",
+ offset);
+ }
+
+ conf &= ~BYT_PULL_ASSIGN_MASK;
+ conf |= BYT_PULL_ASSIGN_DOWN;
+ ret = byt_set_pull_strength(&conf, arg);
+
+ break;
+ case PIN_CONFIG_BIAS_PULL_UP:
+ /* Set default strength value in case none is given */
+ if (arg == 1)
+ arg = 2000;
+
+ /*
+ * Pull assignment is only applicable in input mode. If
+ * chip is not in input mode, set it and warn about it.
+ */
+ if (val & BYT_INPUT_EN) {
+ val &= ~BYT_INPUT_EN;
+ writel(val, val_reg);
+ dev_warn(&vg->pdev->dev,
+ "pin %u forcibly set to input mode\n",
+ offset);
+ }
+
+ conf &= ~BYT_PULL_ASSIGN_MASK;
+ conf |= BYT_PULL_ASSIGN_UP;
+ ret = byt_set_pull_strength(&conf, arg);
+
+ break;
+ case PIN_CONFIG_INPUT_DEBOUNCE:
+ debounce = readl(db_reg);
+ debounce &= ~BYT_DEBOUNCE_PULSE_MASK;
+
+ if (arg)
+ conf |= BYT_DEBOUNCE_EN;
+ else
+ conf &= ~BYT_DEBOUNCE_EN;
+
+ switch (arg) {
+ case 375:
+ debounce |= BYT_DEBOUNCE_PULSE_375US;
+ break;
+ case 750:
+ debounce |= BYT_DEBOUNCE_PULSE_750US;
+ break;
+ case 1500:
+ debounce |= BYT_DEBOUNCE_PULSE_1500US;
+ break;
+ case 3000:
+ debounce |= BYT_DEBOUNCE_PULSE_3MS;
+ break;
+ case 6000:
+ debounce |= BYT_DEBOUNCE_PULSE_6MS;
+ break;
+ case 12000:
+ debounce |= BYT_DEBOUNCE_PULSE_12MS;
+ break;
+ case 24000:
+ debounce |= BYT_DEBOUNCE_PULSE_24MS;
+ break;
+ default:
+ if (arg)
+ ret = -EINVAL;
+ break;
+ }
+
+ if (!ret)
+ writel(debounce, db_reg);
+ break;
+ default:
+ ret = -ENOTSUPP;
+ }
+
+ if (ret)
+ break;
+ }
+
+ if (!ret)
+ writel(conf, conf_reg);
+
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+
+ return ret;
+}
+
+static const struct pinconf_ops byt_pinconf_ops = {
+ .is_generic = true,
+ .pin_config_get = byt_pin_config_get,
+ .pin_config_set = byt_pin_config_set,
+};
+
+static const struct pinctrl_desc byt_pinctrl_desc = {
+ .pctlops = &byt_pinctrl_ops,
+ .pmxops = &byt_pinmux_ops,
+ .confops = &byt_pinconf_ops,
+ .owner = THIS_MODULE,
+};
+
+static int byt_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct byt_gpio *vg = gpiochip_get_data(chip);
+ void __iomem *reg = byt_gpio_reg(vg, offset, BYT_VAL_REG);
+ unsigned long flags;
+ u32 val;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+ val = readl(reg);
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+
+ return !!(val & BYT_LEVEL);
+}
+
+static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct byt_gpio *vg = gpiochip_get_data(chip);
+ void __iomem *reg = byt_gpio_reg(vg, offset, BYT_VAL_REG);
+ unsigned long flags;
+ u32 old_val;
+
+ if (!reg)
+ return;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+ old_val = readl(reg);
+ if (value)
+ writel(old_val | BYT_LEVEL, reg);
+ else
+ writel(old_val & ~BYT_LEVEL, reg);
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+}
+
+static int byt_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
+{
+ struct byt_gpio *vg = gpiochip_get_data(chip);
+ void __iomem *reg = byt_gpio_reg(vg, offset, BYT_VAL_REG);
+ unsigned long flags;
+ u32 value;
+
+ if (!reg)
+ return -EINVAL;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+ value = readl(reg);
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+
+ if (!(value & BYT_OUTPUT_EN))
+ return GPIOF_DIR_OUT;
+ if (!(value & BYT_INPUT_EN))
+ return GPIOF_DIR_IN;
+
+ return -EINVAL;
+}
+
+static int byt_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
+{
+ return pinctrl_gpio_direction_input(chip->base + offset);
+}
+
+static int byt_gpio_direction_output(struct gpio_chip *chip,
+ unsigned int offset, int value)
+{
+ int ret = pinctrl_gpio_direction_output(chip->base + offset);
+
+ if (ret)
+ return ret;
+
+ byt_gpio_set(chip, offset, value);
+
+ return 0;
+}
+
+static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
+{
+ struct byt_gpio *vg = gpiochip_get_data(chip);
+ int i;
+ u32 conf0, val;
+
+ for (i = 0; i < vg->soc_data->npins; i++) {
+ const struct byt_community *comm;
+ const char *pull_str = NULL;
+ const char *pull = NULL;
+ void __iomem *reg;
+ unsigned long flags;
+ const char *label;
+ unsigned int pin;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+ pin = vg->soc_data->pins[i].number;
+ reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG);
+ if (!reg) {
+ seq_printf(s,
+ "Could not retrieve pin %i conf0 reg\n",
+ pin);
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+ continue;
+ }
+ conf0 = readl(reg);
+
+ reg = byt_gpio_reg(vg, pin, BYT_VAL_REG);
+ if (!reg) {
+ seq_printf(s,
+ "Could not retrieve pin %i val reg\n", pin);
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+ continue;
+ }
+ val = readl(reg);
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+
+ comm = byt_get_community(vg, pin);
+ if (!comm) {
+ seq_printf(s,
+ "Could not get community for pin %i\n", pin);
+ continue;
+ }
+ label = gpiochip_is_requested(chip, i);
+ if (!label)
+ label = "Unrequested";
+
+ switch (conf0 & BYT_PULL_ASSIGN_MASK) {
+ case BYT_PULL_ASSIGN_UP:
+ pull = "up";
+ break;
+ case BYT_PULL_ASSIGN_DOWN:
+ pull = "down";
+ break;
+ }
+
+ switch (conf0 & BYT_PULL_STR_MASK) {
+ case BYT_PULL_STR_2K:
+ pull_str = "2k";
+ break;
+ case BYT_PULL_STR_10K:
+ pull_str = "10k";
+ break;
+ case BYT_PULL_STR_20K:
+ pull_str = "20k";
+ break;
+ case BYT_PULL_STR_40K:
+ pull_str = "40k";
+ break;
+ }
+
+ seq_printf(s,
+ " gpio-%-3d (%-20.20s) %s %s %s pad-%-3d offset:0x%03x mux:%d %s%s%s",
+ pin,
+ label,
+ val & BYT_INPUT_EN ? " " : "in",
+ val & BYT_OUTPUT_EN ? " " : "out",
+ val & BYT_LEVEL ? "hi" : "lo",
+ comm->pad_map[i], comm->pad_map[i] * 16,
+ conf0 & 0x7,
+ conf0 & BYT_TRIG_NEG ? " fall" : " ",
+ conf0 & BYT_TRIG_POS ? " rise" : " ",
+ conf0 & BYT_TRIG_LVL ? " level" : " ");
+
+ if (pull && pull_str)
+ seq_printf(s, " %-4s %-3s", pull, pull_str);
+ else
+ seq_puts(s, " ");
+
+ if (conf0 & BYT_IODEN)
+ seq_puts(s, " open-drain");
+
+ seq_puts(s, "\n");
+ }
+}
+
+static const struct gpio_chip byt_gpio_chip = {
+ .owner = THIS_MODULE,
+ .request = gpiochip_generic_request,
+ .free = gpiochip_generic_free,
+ .get_direction = byt_gpio_get_direction,
+ .direction_input = byt_gpio_direction_input,
+ .direction_output = byt_gpio_direction_output,
+ .get = byt_gpio_get,
+ .set = byt_gpio_set,
+ .dbg_show = byt_gpio_dbg_show,
+};
+
+static void byt_irq_ack(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct byt_gpio *vg = gpiochip_get_data(gc);
+ unsigned offset = irqd_to_hwirq(d);
+ void __iomem *reg;
+
+ reg = byt_gpio_reg(vg, offset, BYT_INT_STAT_REG);
+ if (!reg)
+ return;
+
+ raw_spin_lock(&byt_lock);
+ writel(BIT(offset % 32), reg);
+ raw_spin_unlock(&byt_lock);
+}
+
+static void byt_irq_mask(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct byt_gpio *vg = gpiochip_get_data(gc);
+
+ byt_gpio_clear_triggering(vg, irqd_to_hwirq(d));
+}
+
+static void byt_irq_unmask(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct byt_gpio *vg = gpiochip_get_data(gc);
+ unsigned offset = irqd_to_hwirq(d);
+ unsigned long flags;
+ void __iomem *reg;
+ u32 value;
+
+ reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG);
+ if (!reg)
+ return;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+ value = readl(reg);
+
+ switch (irqd_get_trigger_type(d)) {
+ case IRQ_TYPE_LEVEL_HIGH:
+ value |= BYT_TRIG_LVL;
+ /* fall through */
+ case IRQ_TYPE_EDGE_RISING:
+ value |= BYT_TRIG_POS;
+ break;
+ case IRQ_TYPE_LEVEL_LOW:
+ value |= BYT_TRIG_LVL;
+ /* fall through */
+ case IRQ_TYPE_EDGE_FALLING:
+ value |= BYT_TRIG_NEG;
+ break;
+ case IRQ_TYPE_EDGE_BOTH:
+ value |= (BYT_TRIG_NEG | BYT_TRIG_POS);
+ break;
+ }
+
+ writel(value, reg);
+
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+}
+
+static int byt_irq_type(struct irq_data *d, unsigned int type)
+{
+ struct byt_gpio *vg = gpiochip_get_data(irq_data_get_irq_chip_data(d));
+ u32 offset = irqd_to_hwirq(d);
+ u32 value;
+ unsigned long flags;
+ void __iomem *reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG);
+
+ if (!reg || offset >= vg->chip.ngpio)
+ return -EINVAL;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+ value = readl(reg);
+
+ WARN(value & BYT_DIRECT_IRQ_EN,
+ "Bad pad config for io mode, force direct_irq_en bit clearing");
+
+ /* For level trigges the BYT_TRIG_POS and BYT_TRIG_NEG bits
+ * are used to indicate high and low level triggering
+ */
+ value &= ~(BYT_DIRECT_IRQ_EN | BYT_TRIG_POS | BYT_TRIG_NEG |
+ BYT_TRIG_LVL);
+ /* Enable glitch filtering */
+ value |= BYT_GLITCH_FILTER_EN | BYT_GLITCH_F_SLOW_CLK |
+ BYT_GLITCH_F_FAST_CLK;
+
+ writel(value, reg);
+
+ if (type & IRQ_TYPE_EDGE_BOTH)
+ irq_set_handler_locked(d, handle_edge_irq);
+ else if (type & IRQ_TYPE_LEVEL_MASK)
+ irq_set_handler_locked(d, handle_level_irq);
+
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+
+ return 0;
+}
+
+static struct irq_chip byt_irqchip = {
+ .name = "BYT-GPIO",
+ .irq_ack = byt_irq_ack,
+ .irq_mask = byt_irq_mask,
+ .irq_unmask = byt_irq_unmask,
+ .irq_set_type = byt_irq_type,
+ .flags = IRQCHIP_SKIP_SET_WAKE,
+};
+
+static void byt_gpio_irq_handler(struct irq_desc *desc)
+{
+ struct irq_data *data = irq_desc_get_irq_data(desc);
+ struct byt_gpio *vg = gpiochip_get_data(
+ irq_desc_get_handler_data(desc));
+ struct irq_chip *chip = irq_data_get_irq_chip(data);
+ u32 base, pin;
+ void __iomem *reg;
+ unsigned long pending;
+ unsigned int virq;
+
+ /* check from GPIO controller which pin triggered the interrupt */
+ for (base = 0; base < vg->chip.ngpio; base += 32) {
+ reg = byt_gpio_reg(vg, base, BYT_INT_STAT_REG);
+
+ if (!reg) {
+ dev_warn(&vg->pdev->dev,
+ "Pin %i: could not retrieve interrupt status register\n",
+ base);
+ continue;
+ }
+
+ raw_spin_lock(&byt_lock);
+ pending = readl(reg);
+ raw_spin_unlock(&byt_lock);
+ for_each_set_bit(pin, &pending, 32) {
+ virq = irq_find_mapping(vg->chip.irq.domain, base + pin);
+ generic_handle_irq(virq);
+ }
+ }
+ chip->irq_eoi(data);
+}
+
+static void byt_gpio_irq_init_hw(struct byt_gpio *vg)
+{
+ struct gpio_chip *gc = &vg->chip;
+ struct device *dev = &vg->pdev->dev;
+ void __iomem *reg;
+ u32 base, value;
+ int i;
+
+ /*
+ * Clear interrupt triggers for all pins that are GPIOs and
+ * do not use direct IRQ mode. This will prevent spurious
+ * interrupts from misconfigured pins.
+ */
+ for (i = 0; i < vg->soc_data->npins; i++) {
+ unsigned int pin = vg->soc_data->pins[i].number;
+
+ reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG);
+ if (!reg) {
+ dev_warn(&vg->pdev->dev,
+ "Pin %i: could not retrieve conf0 register\n",
+ i);
+ continue;
+ }
+
+ value = readl(reg);
+ if (value & BYT_DIRECT_IRQ_EN) {
+ clear_bit(i, gc->irq.valid_mask);
+ dev_dbg(dev, "excluding GPIO %d from IRQ domain\n", i);
+ } else if ((value & BYT_PIN_MUX) == byt_get_gpio_mux(vg, i)) {
+ byt_gpio_clear_triggering(vg, i);
+ dev_dbg(dev, "disabling GPIO %d\n", i);
+ }
+ }
+
+ /* clear interrupt status trigger registers */
+ for (base = 0; base < vg->soc_data->npins; base += 32) {
+ reg = byt_gpio_reg(vg, base, BYT_INT_STAT_REG);
+
+ if (!reg) {
+ dev_warn(&vg->pdev->dev,
+ "Pin %i: could not retrieve irq status reg\n",
+ base);
+ continue;
+ }
+
+ writel(0xffffffff, reg);
+ /* make sure trigger bits are cleared, if not then a pin
+ might be misconfigured in bios */
+ value = readl(reg);
+ if (value)
+ dev_err(&vg->pdev->dev,
+ "GPIO interrupt error, pins misconfigured. INT_STAT%u: 0x%08x\n",
+ base / 32, value);
+ }
+}
+
+static int byt_gpio_probe(struct byt_gpio *vg)
+{
+ struct gpio_chip *gc;
+ struct resource *irq_rc;
+ int ret;
+
+ /* Set up gpio chip */
+ vg->chip = byt_gpio_chip;
+ gc = &vg->chip;
+ gc->label = dev_name(&vg->pdev->dev);
+ gc->base = -1;
+ gc->can_sleep = false;
+ gc->parent = &vg->pdev->dev;
+ gc->ngpio = vg->soc_data->npins;
+ gc->irq.need_valid_mask = true;
+
+#ifdef CONFIG_PM_SLEEP
+ vg->saved_context = devm_kcalloc(&vg->pdev->dev, gc->ngpio,
+ sizeof(*vg->saved_context), GFP_KERNEL);
+#endif
+ ret = devm_gpiochip_add_data(&vg->pdev->dev, gc, vg);
+ if (ret) {
+ dev_err(&vg->pdev->dev, "failed adding byt-gpio chip\n");
+ return ret;
+ }
+
+ ret = gpiochip_add_pin_range(&vg->chip, dev_name(&vg->pdev->dev),
+ 0, 0, vg->soc_data->npins);
+ if (ret) {
+ dev_err(&vg->pdev->dev, "failed to add GPIO pin range\n");
+ return ret;
+ }
+
+ /* set up interrupts */
+ irq_rc = platform_get_resource(vg->pdev, IORESOURCE_IRQ, 0);
+ if (irq_rc && irq_rc->start) {
+ byt_gpio_irq_init_hw(vg);
+ ret = gpiochip_irqchip_add(gc, &byt_irqchip, 0,
+ handle_bad_irq, IRQ_TYPE_NONE);
+ if (ret) {
+ dev_err(&vg->pdev->dev, "failed to add irqchip\n");
+ return ret;
+ }
+
+ gpiochip_set_chained_irqchip(gc, &byt_irqchip,
+ (unsigned)irq_rc->start,
+ byt_gpio_irq_handler);
+ }
+
+ return ret;
+}
+
+static int byt_set_soc_data(struct byt_gpio *vg,
+ const struct byt_pinctrl_soc_data *soc_data)
+{
+ int i;
+
+ vg->soc_data = soc_data;
+ vg->communities_copy = devm_kcalloc(&vg->pdev->dev,
+ soc_data->ncommunities,
+ sizeof(*vg->communities_copy),
+ GFP_KERNEL);
+ if (!vg->communities_copy)
+ return -ENOMEM;
+
+ for (i = 0; i < soc_data->ncommunities; i++) {
+ struct byt_community *comm = vg->communities_copy + i;
+ struct resource *mem_rc;
+
+ *comm = vg->soc_data->communities[i];
+
+ mem_rc = platform_get_resource(vg->pdev, IORESOURCE_MEM, 0);
+ comm->reg_base = devm_ioremap_resource(&vg->pdev->dev, mem_rc);
+ if (IS_ERR(comm->reg_base))
+ return PTR_ERR(comm->reg_base);
+ }
+
+ return 0;
+}
+
+static const struct acpi_device_id byt_gpio_acpi_match[] = {
+ { "INT33B2", (kernel_ulong_t)byt_soc_data },
+ { "INT33FC", (kernel_ulong_t)byt_soc_data },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, byt_gpio_acpi_match);
+
+static int byt_pinctrl_probe(struct platform_device *pdev)
+{
+ const struct byt_pinctrl_soc_data *soc_data = NULL;
+ const struct byt_pinctrl_soc_data **soc_table;
+ const struct acpi_device_id *acpi_id;
+ struct acpi_device *acpi_dev;
+ struct byt_gpio *vg;
+ int i, ret;
+
+ acpi_dev = ACPI_COMPANION(&pdev->dev);
+ if (!acpi_dev)
+ return -ENODEV;
+
+ acpi_id = acpi_match_device(byt_gpio_acpi_match, &pdev->dev);
+ if (!acpi_id)
+ return -ENODEV;
+
+ soc_table = (const struct byt_pinctrl_soc_data **)acpi_id->driver_data;
+
+ for (i = 0; soc_table[i]; i++) {
+ if (!strcmp(acpi_dev->pnp.unique_id, soc_table[i]->uid)) {
+ soc_data = soc_table[i];
+ break;
+ }
+ }
+
+ if (!soc_data)
+ return -ENODEV;
+
+ vg = devm_kzalloc(&pdev->dev, sizeof(*vg), GFP_KERNEL);
+ if (!vg)
+ return -ENOMEM;
+
+ vg->pdev = pdev;
+ ret = byt_set_soc_data(vg, soc_data);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to set soc data\n");
+ return ret;
+ }
+
+ vg->pctl_desc = byt_pinctrl_desc;
+ vg->pctl_desc.name = dev_name(&pdev->dev);
+ vg->pctl_desc.pins = vg->soc_data->pins;
+ vg->pctl_desc.npins = vg->soc_data->npins;
+
+ vg->pctl_dev = devm_pinctrl_register(&pdev->dev, &vg->pctl_desc, vg);
+ if (IS_ERR(vg->pctl_dev)) {
+ dev_err(&pdev->dev, "failed to register pinctrl driver\n");
+ return PTR_ERR(vg->pctl_dev);
+ }
+
+ ret = byt_gpio_probe(vg);
+ if (ret)
+ return ret;
+
+ platform_set_drvdata(pdev, vg);
+ pm_runtime_enable(&pdev->dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int byt_gpio_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct byt_gpio *vg = platform_get_drvdata(pdev);
+ unsigned long flags;
+ int i;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+
+ for (i = 0; i < vg->soc_data->npins; i++) {
+ void __iomem *reg;
+ u32 value;
+ unsigned int pin = vg->soc_data->pins[i].number;
+
+ reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG);
+ if (!reg) {
+ dev_warn(&vg->pdev->dev,
+ "Pin %i: could not retrieve conf0 register\n",
+ i);
+ continue;
+ }
+ value = readl(reg) & BYT_CONF0_RESTORE_MASK;
+ vg->saved_context[i].conf0 = value;
+
+ reg = byt_gpio_reg(vg, pin, BYT_VAL_REG);
+ value = readl(reg) & BYT_VAL_RESTORE_MASK;
+ vg->saved_context[i].val = value;
+ }
+
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+ return 0;
+}
+
+static int byt_gpio_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct byt_gpio *vg = platform_get_drvdata(pdev);
+ unsigned long flags;
+ int i;
+
+ raw_spin_lock_irqsave(&byt_lock, flags);
+
+ for (i = 0; i < vg->soc_data->npins; i++) {
+ void __iomem *reg;
+ u32 value;
+ unsigned int pin = vg->soc_data->pins[i].number;
+
+ reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG);
+ if (!reg) {
+ dev_warn(&vg->pdev->dev,
+ "Pin %i: could not retrieve conf0 register\n",
+ i);
+ continue;
+ }
+ value = readl(reg);
+ if ((value & BYT_CONF0_RESTORE_MASK) !=
+ vg->saved_context[i].conf0) {
+ value &= ~BYT_CONF0_RESTORE_MASK;
+ value |= vg->saved_context[i].conf0;
+ writel(value, reg);
+ dev_info(dev, "restored pin %d conf0 %#08x", i, value);
+ }
+
+ reg = byt_gpio_reg(vg, pin, BYT_VAL_REG);
+ value = readl(reg);
+ if ((value & BYT_VAL_RESTORE_MASK) !=
+ vg->saved_context[i].val) {
+ u32 v;
+
+ v = value & ~BYT_VAL_RESTORE_MASK;
+ v |= vg->saved_context[i].val;
+ if (v != value) {
+ writel(v, reg);
+ dev_dbg(dev, "restored pin %d val %#08x\n",
+ i, v);
+ }
+ }
+ }
+
+ raw_spin_unlock_irqrestore(&byt_lock, flags);
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_PM
+static int byt_gpio_runtime_suspend(struct device *dev)
+{
+ return 0;
+}
+
+static int byt_gpio_runtime_resume(struct device *dev)
+{
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops byt_gpio_pm_ops = {
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(byt_gpio_suspend, byt_gpio_resume)
+ SET_RUNTIME_PM_OPS(byt_gpio_runtime_suspend, byt_gpio_runtime_resume,
+ NULL)
+};
+
+static struct platform_driver byt_gpio_driver = {
+ .probe = byt_pinctrl_probe,
+ .driver = {
+ .name = "byt_gpio",
+ .pm = &byt_gpio_pm_ops,
+ .suppress_bind_attrs = true,
+
+ .acpi_match_table = ACPI_PTR(byt_gpio_acpi_match),
+ },
+};
+
+static int __init byt_gpio_init(void)
+{
+ return platform_driver_register(&byt_gpio_driver);
+}
+subsys_initcall(byt_gpio_init);