| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Cristina Ciocan | 4979 | 56.15% | 7 | 6.86% |
| Mathias Nyman | 1446 | 16.31% | 2 | 1.96% |
| Andy Shevchenko | 1010 | 11.39% | 42 | 41.18% |
| Mika Westerberg | 677 | 7.63% | 8 | 7.84% |
| Hans de Goede | 554 | 6.25% | 11 | 10.78% |
| Raag Jadav | 82 | 0.92% | 7 | 6.86% |
| Linus Walleij | 26 | 0.29% | 5 | 4.90% |
| Bartosz Golaszewski | 19 | 0.21% | 1 | 0.98% |
| Chew, Kean Ho | 12 | 0.14% | 1 | 0.98% |
| Aditya Pakki | 10 | 0.11% | 1 | 0.98% |
| Alexander Stein | 9 | 0.10% | 3 | 2.94% |
| Jin Yao | 8 | 0.09% | 2 | 1.96% |
| Loic Poulain | 5 | 0.06% | 1 | 0.98% |
| David Brownell | 5 | 0.06% | 1 | 0.98% |
| Thierry Reding | 4 | 0.05% | 2 | 1.96% |
| Gustavo A. R. Silva | 4 | 0.05% | 1 | 0.98% |
| Eric Ernst | 4 | 0.05% | 1 | 0.98% |
| Wolfram Sang | 4 | 0.05% | 1 | 0.98% |
| Paul Gortmaker | 3 | 0.03% | 1 | 0.98% |
| Dan Carpenter | 3 | 0.03% | 1 | 0.98% |
| Matti Vaittinen | 2 | 0.02% | 1 | 0.98% |
| Ricardo Ribalda Delgado | 1 | 0.01% | 1 | 0.98% |
| Marc Zyngier | 1 | 0.01% | 1 | 0.98% |
| Total | 8868 | 102 |
// 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/acpi.h> #include <linux/array_size.h> #include <linux/bitops.h> #include <linux/cleanup.h> #include <linux/gpio/driver.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/module.h> #include <linux/types.h> #include <linux/platform_device.h> #include <linux/pm.h> #include <linux/property.h> #include <linux/seq_file.h> #include <linux/string_helpers.h> #include <linux/pinctrl/pinctrl.h> #include <linux/pinctrl/pinmux.h> #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/pinconf-generic.h> #include "pinctrl-intel.h" /* 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_DIRECT_IRQ_REG 0x980 #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_MASK GENMASK(26, 24) #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 GENMASK(10, 9) #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_MASK GENMASK(8, 7) #define BYT_PULL_ASSIGN_DOWN BIT(8) #define BYT_PULL_ASSIGN_UP BIT(7) #define BYT_PIN_MUX GENMASK(2, 0) /* BYT_VAL_REG register bits */ #define BYT_DIR_MASK GENMASK(2, 1) #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_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 GENMASK(2, 0) #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 #define BYT_ALTER_GPIO_MUX 1 struct intel_pad_context { u32 conf0; u32 val; }; #define COMMUNITY(p, n, map) \ { \ .pin_base = (p), \ .npins = (n), \ .pad_map = (map),\ } /* 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 unsigned int byt_score_uart3_pins[] = { 57, 61 }; static const unsigned int byt_score_pwm0_pins[] = { 94 }; static const unsigned int byt_score_pwm1_pins[] = { 95 }; static const unsigned int byt_score_sio_spi_pins[] = { 66, 67, 68, 69 }; 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 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 unsigned int byt_score_sdcard_pins[] = { 7, 33, 34, 35, 36, 37, 38, 39, 40, 41, }; static const unsigned int byt_score_sdcard_mux_values[] = { 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, }; static const unsigned int byt_score_sdio_pins[] = { 27, 28, 29, 30, 31, 32 }; static const unsigned int byt_score_emmc_pins[] = { 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, }; static const unsigned int byt_score_ilb_lpc_pins[] = { 42, 43, 44, 45, 46, 47, 48, 49, 50, }; static const unsigned int byt_score_sata_pins[] = { 0, 1, 2 }; 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 unsigned int byt_score_smbus_pins[] = { 51, 52, 53 }; static const struct intel_pingroup byt_score_groups[] = { PIN_GROUP_GPIO("uart1_grp", byt_score_uart1_pins, 1), PIN_GROUP_GPIO("uart2_grp", byt_score_uart2_pins, 1), PIN_GROUP_GPIO("uart3_grp", byt_score_uart3_pins, 1), PIN_GROUP_GPIO("pwm0_grp", byt_score_pwm0_pins, 1), PIN_GROUP_GPIO("pwm1_grp", byt_score_pwm1_pins, 1), PIN_GROUP_GPIO("ssp2_grp", byt_score_ssp2_pins, 1), PIN_GROUP_GPIO("sio_spi_grp", byt_score_sio_spi_pins, 1), PIN_GROUP_GPIO("i2c5_grp", byt_score_i2c5_pins, 1), PIN_GROUP_GPIO("i2c6_grp", byt_score_i2c6_pins, 1), PIN_GROUP_GPIO("i2c4_grp", byt_score_i2c4_pins, 1), PIN_GROUP_GPIO("i2c3_grp", byt_score_i2c3_pins, 1), PIN_GROUP_GPIO("i2c2_grp", byt_score_i2c2_pins, 1), PIN_GROUP_GPIO("i2c1_grp", byt_score_i2c1_pins, 1), PIN_GROUP_GPIO("i2c0_grp", byt_score_i2c0_pins, 1), PIN_GROUP_GPIO("ssp0_grp", byt_score_ssp0_pins, 1), PIN_GROUP_GPIO("ssp1_grp", byt_score_ssp1_pins, 1), PIN_GROUP_GPIO("sdcard_grp", byt_score_sdcard_pins, byt_score_sdcard_mux_values), PIN_GROUP_GPIO("sdio_grp", byt_score_sdio_pins, 1), PIN_GROUP_GPIO("emmc_grp", byt_score_emmc_pins, 1), PIN_GROUP_GPIO("lpc_grp", byt_score_ilb_lpc_pins, 1), PIN_GROUP_GPIO("sata_grp", byt_score_sata_pins, 1), PIN_GROUP_GPIO("plt_clk0_grp", byt_score_plt_clk0_pins, 1), PIN_GROUP_GPIO("plt_clk1_grp", byt_score_plt_clk1_pins, 1), PIN_GROUP_GPIO("plt_clk2_grp", byt_score_plt_clk2_pins, 1), PIN_GROUP_GPIO("plt_clk3_grp", byt_score_plt_clk3_pins, 1), PIN_GROUP_GPIO("plt_clk4_grp", byt_score_plt_clk4_pins, 1), PIN_GROUP_GPIO("plt_clk5_grp", byt_score_plt_clk5_pins, 1), PIN_GROUP_GPIO("smbus_grp", byt_score_smbus_pins, 1), }; static const char * const byt_score_uart_groups[] = { "uart1_grp", "uart2_grp", "uart3_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_gpio", "uart2_grp_gpio", "uart3_grp_gpio", "pwm0_grp_gpio", "pwm1_grp_gpio", "ssp0_grp_gpio", "ssp1_grp_gpio", "ssp2_grp_gpio", "sio_spi_grp_gpio", "i2c0_grp_gpio", "i2c1_grp_gpio", "i2c2_grp_gpio", "i2c3_grp_gpio", "i2c4_grp_gpio", "i2c5_grp_gpio", "i2c6_grp_gpio", "sdcard_grp_gpio", "sdio_grp_gpio", "emmc_grp_gpio", "lpc_grp_gpio", "sata_grp_gpio", "plt_clk0_grp_gpio", "plt_clk1_grp_gpio", "plt_clk2_grp_gpio", "plt_clk3_grp_gpio", "plt_clk4_grp_gpio", "plt_clk5_grp_gpio", "smbus_grp_gpio", }; static const struct intel_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 intel_community byt_score_communities[] = { COMMUNITY(0, BYT_NGPIO_SCORE, byt_score_pins_map), }; static const struct intel_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 unsigned int byt_sus_usb_over_current_mode_values[] = { 0, 0 }; static const unsigned int byt_sus_usb_over_current_gpio_mode_values[] = { 1, 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 int byt_sus_usb_ulpi_mode_values[] = { 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, }; static const unsigned int byt_sus_usb_ulpi_gpio_mode_values[] = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; static const unsigned int byt_sus_pcu_spi_pins[] = { 21 }; static const unsigned int byt_sus_pcu_spi_mode_values[] = { 0 }; static const unsigned int byt_sus_pcu_spi_gpio_mode_values[] = { 1 }; static const unsigned int byt_sus_pmu_clk1_pins[] = { 5 }; static const unsigned int byt_sus_pmu_clk2_pins[] = { 6 }; static const struct intel_pingroup byt_sus_groups[] = { PIN_GROUP("usb_oc_grp", byt_sus_usb_over_current_pins, byt_sus_usb_over_current_mode_values), PIN_GROUP("usb_ulpi_grp", byt_sus_usb_ulpi_pins, byt_sus_usb_ulpi_mode_values), PIN_GROUP("pcu_spi_grp", byt_sus_pcu_spi_pins, byt_sus_pcu_spi_mode_values), PIN_GROUP("usb_oc_grp_gpio", byt_sus_usb_over_current_pins, byt_sus_usb_over_current_gpio_mode_values), PIN_GROUP("usb_ulpi_grp_gpio", byt_sus_usb_ulpi_pins, byt_sus_usb_ulpi_gpio_mode_values), PIN_GROUP("pcu_spi_grp_gpio", byt_sus_pcu_spi_pins, byt_sus_pcu_spi_gpio_mode_values), PIN_GROUP_GPIO("pmu_clk1_grp", byt_sus_pmu_clk1_pins, 1), PIN_GROUP_GPIO("pmu_clk2_grp", byt_sus_pmu_clk2_pins, 1), }; 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_pmu_clk_groups[] = { "pmu_clk1_grp", "pmu_clk2_grp", }; static const char * const byt_sus_gpio_groups[] = { "usb_oc_grp_gpio", "usb_ulpi_grp_gpio", "pcu_spi_grp_gpio", "pmu_clk1_grp_gpio", "pmu_clk2_grp_gpio", }; static const struct intel_function byt_sus_functions[] = { FUNCTION("usb", byt_sus_usb_groups), FUNCTION("spi", byt_sus_spi_groups), FUNCTION("gpio", byt_sus_gpio_groups), FUNCTION("pmu_clk", byt_sus_pmu_clk_groups), }; static const struct intel_community byt_sus_communities[] = { COMMUNITY(0, BYT_NGPIO_SUS, byt_sus_pins_map), }; static const struct intel_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, "HV_DDI0_HPD"), PINCTRL_PIN(1, "HV_DDI0_DDC_SDA"), PINCTRL_PIN(2, "HV_DDI0_DDC_SCL"), PINCTRL_PIN(3, "PANEL0_VDDEN"), PINCTRL_PIN(4, "PANEL0_BKLTEN"), PINCTRL_PIN(5, "PANEL0_BKLTCTL"), PINCTRL_PIN(6, "HV_DDI1_HPD"), PINCTRL_PIN(7, "HV_DDI1_DDC_SDA"), PINCTRL_PIN(8, "HV_DDI1_DDC_SCL"), PINCTRL_PIN(9, "PANEL1_VDDEN"), PINCTRL_PIN(10, "PANEL1_BKLTEN"), PINCTRL_PIN(11, "PANEL1_BKLTCTL"), PINCTRL_PIN(12, "GP_INTD_DSI_TE1"), PINCTRL_PIN(13, "HV_DDI2_DDC_SDA"), PINCTRL_PIN(14, "HV_DDI2_DDC_SCL"), PINCTRL_PIN(15, "GP_CAMERASB00"), PINCTRL_PIN(16, "GP_CAMERASB01"), PINCTRL_PIN(17, "GP_CAMERASB02"), PINCTRL_PIN(18, "GP_CAMERASB03"), PINCTRL_PIN(19, "GP_CAMERASB04"), PINCTRL_PIN(20, "GP_CAMERASB05"), PINCTRL_PIN(21, "GP_CAMERASB06"), PINCTRL_PIN(22, "GP_CAMERASB07"), PINCTRL_PIN(23, "GP_CAMERASB08"), PINCTRL_PIN(24, "GP_CAMERASB09"), PINCTRL_PIN(25, "GP_CAMERASB10"), PINCTRL_PIN(26, "GP_CAMERASB11"), PINCTRL_PIN(27, "GP_INTD_DSI_TE2"), }; static const unsigned int 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 intel_community byt_ncore_communities[] = { COMMUNITY(0, BYT_NGPIO_NCORE, byt_ncore_pins_map), }; static const struct intel_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 intel_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 void __iomem *byt_gpio_reg(struct intel_pinctrl *vg, unsigned int offset, int reg) { struct intel_community *comm = intel_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->pad_regs + reg_offset + reg; } static const struct pinctrl_ops byt_pinctrl_ops = { .get_groups_count = intel_get_groups_count, .get_group_name = intel_get_group_name, .get_group_pins = intel_get_group_pins, }; static void byt_set_group_simple_mux(struct intel_pinctrl *vg, const struct intel_pingroup group, unsigned int func) { int i; guard(raw_spinlock_irqsave)(&byt_lock); for (i = 0; i < group.grp.npins; i++) { void __iomem *padcfg0; u32 value; padcfg0 = byt_gpio_reg(vg, group.grp.pins[i], BYT_CONF0_REG); if (!padcfg0) { dev_warn(vg->dev, "Group %s, pin %i not muxed (can't retrieve CONF0)\n", group.grp.name, i); continue; } value = readl(padcfg0); value &= ~BYT_PIN_MUX; value |= func; writel(value, padcfg0); } } static void byt_set_group_mixed_mux(struct intel_pinctrl *vg, const struct intel_pingroup group, const unsigned int *func) { int i; guard(raw_spinlock_irqsave)(&byt_lock); for (i = 0; i < group.grp.npins; i++) { void __iomem *padcfg0; u32 value; padcfg0 = byt_gpio_reg(vg, group.grp.pins[i], BYT_CONF0_REG); if (!padcfg0) { dev_warn(vg->dev, "Group %s, pin %i not muxed (can't retrieve CONF0)\n", group.grp.name, i); continue; } value = readl(padcfg0); value &= ~BYT_PIN_MUX; value |= func[i]; writel(value, padcfg0); } } static int byt_set_mux(struct pinctrl_dev *pctldev, unsigned int func_selector, unsigned int group_selector) { struct intel_pinctrl *vg = pinctrl_dev_get_drvdata(pctldev); const struct intel_function func = vg->soc->functions[func_selector]; const struct intel_pingroup group = vg->soc->groups[group_selector]; if (group.modes) byt_set_group_mixed_mux(vg, group, group.modes); else if (!strcmp(func.func.name, "gpio")) byt_set_group_simple_mux(vg, group, BYT_DEFAULT_GPIO_MUX); else byt_set_group_simple_mux(vg, group, group.mode); return 0; } static u32 byt_get_gpio_mux(struct intel_pinctrl *vg, unsigned int offset) { /* SCORE pin 92-93 */ if (!strcmp(vg->soc->uid, BYT_SCORE_ACPI_UID) && offset >= 92 && offset <= 93) return BYT_ALTER_GPIO_MUX; /* SUS pin 11-21 */ if (!strcmp(vg->soc->uid, BYT_SUS_ACPI_UID) && offset >= 11 && offset <= 21) return BYT_ALTER_GPIO_MUX; return BYT_DEFAULT_GPIO_MUX; } static void byt_gpio_clear_triggering(struct intel_pinctrl *vg, unsigned int offset) { void __iomem *reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG); u32 value; guard(raw_spinlock_irqsave)(&byt_lock); value = readl(reg); /* Do not clear direct-irq enabled IRQs (from gpio_disable_free) */ if (!(value & BYT_DIRECT_IRQ_EN)) value &= ~(BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL); writel(value, reg); } static int byt_gpio_request_enable(struct pinctrl_dev *pctl_dev, struct pinctrl_gpio_range *range, unsigned int offset) { struct intel_pinctrl *vg = pinctrl_dev_get_drvdata(pctl_dev); void __iomem *reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG); u32 value, gpio_mux; guard(raw_spinlock_irqsave)(&byt_lock); /* * 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) return 0; value = readl(reg) & ~BYT_PIN_MUX; value |= gpio_mux; writel(value, reg); dev_warn(vg->dev, FW_BUG "Pin %i: forcibly re-configured as GPIO\n", offset); return 0; } static void byt_gpio_disable_free(struct pinctrl_dev *pctl_dev, struct pinctrl_gpio_range *range, unsigned int offset) { struct intel_pinctrl *vg = pinctrl_dev_get_drvdata(pctl_dev); byt_gpio_clear_triggering(vg, offset); } static void byt_gpio_direct_irq_check(struct intel_pinctrl *vg, unsigned int offset) { void __iomem *conf_reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG); /* * Before making any direction modifications, do a check if gpio is set * for direct IRQ. On Bay Trail, setting GPIO to output does not make * sense, so let's at least inform the caller before they shoot * themselves in the foot. */ if (readl(conf_reg) & BYT_DIRECT_IRQ_EN) dev_info_once(vg->dev, "Potential Error: Pin %i: forcibly set GPIO with DIRECT_IRQ_EN to output\n", offset); } static int byt_gpio_set_direction(struct pinctrl_dev *pctl_dev, struct pinctrl_gpio_range *range, unsigned int offset, bool input) { struct intel_pinctrl *vg = pinctrl_dev_get_drvdata(pctl_dev); void __iomem *val_reg = byt_gpio_reg(vg, offset, BYT_VAL_REG); u32 value; guard(raw_spinlock_irqsave)(&byt_lock); value = readl(val_reg); value &= ~BYT_DIR_MASK; if (input) value |= BYT_OUTPUT_EN; else byt_gpio_direct_irq_check(vg, offset); writel(value, val_reg); return 0; } static const struct pinmux_ops byt_pinmux_ops = { .get_functions_count = intel_get_functions_count, .get_function_name = intel_get_function_name, .get_function_groups = intel_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 1: /* Set default strength value in case none is given */ 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 void byt_gpio_force_input_mode(struct intel_pinctrl *vg, unsigned int offset) { void __iomem *reg = byt_gpio_reg(vg, offset, BYT_VAL_REG); u32 value; value = readl(reg); if (!(value & BYT_INPUT_EN)) return; /* * Pull assignment is only applicable in input mode. If * chip is not in input mode, set it and warn about it. */ value &= ~BYT_INPUT_EN; writel(value, reg); dev_warn(vg->dev, "Pin %i: forcibly set to input mode\n", offset); } static int byt_pin_config_get(struct pinctrl_dev *pctl_dev, unsigned int offset, unsigned long *config) { struct intel_pinctrl *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); u32 conf, pull, val, debounce; u16 arg = 0; scoped_guard(raw_spinlock_irqsave, &byt_lock) { conf = readl(conf_reg); val = readl(val_reg); } pull = conf & BYT_PULL_ASSIGN_MASK; 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; scoped_guard(raw_spinlock_irqsave, &byt_lock) debounce = readl(db_reg); 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 intel_pinctrl *vg = pinctrl_dev_get_drvdata(pctl_dev); void __iomem *conf_reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG); void __iomem *db_reg = byt_gpio_reg(vg, offset, BYT_DEBOUNCE_REG); u32 conf, db_pulse, debounce; enum pin_config_param param; int i, ret; u32 arg; guard(raw_spinlock_irqsave)(&byt_lock); conf = readl(conf_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: byt_gpio_force_input_mode(vg, offset); conf &= ~BYT_PULL_ASSIGN_MASK; conf |= BYT_PULL_ASSIGN_DOWN; ret = byt_set_pull_strength(&conf, arg); if (ret) return ret; break; case PIN_CONFIG_BIAS_PULL_UP: byt_gpio_force_input_mode(vg, offset); conf &= ~BYT_PULL_ASSIGN_MASK; conf |= BYT_PULL_ASSIGN_UP; ret = byt_set_pull_strength(&conf, arg); if (ret) return ret; break; case PIN_CONFIG_INPUT_DEBOUNCE: switch (arg) { case 0: db_pulse = 0; break; case 375: db_pulse = BYT_DEBOUNCE_PULSE_375US; break; case 750: db_pulse = BYT_DEBOUNCE_PULSE_750US; break; case 1500: db_pulse = BYT_DEBOUNCE_PULSE_1500US; break; case 3000: db_pulse = BYT_DEBOUNCE_PULSE_3MS; break; case 6000: db_pulse = BYT_DEBOUNCE_PULSE_6MS; break; case 12000: db_pulse = BYT_DEBOUNCE_PULSE_12MS; break; case 24000: db_pulse = BYT_DEBOUNCE_PULSE_24MS; break; default: return -EINVAL; } if (db_pulse) { debounce = readl(db_reg); debounce = (debounce & ~BYT_DEBOUNCE_PULSE_MASK) | db_pulse; writel(debounce, db_reg); conf |= BYT_DEBOUNCE_EN; } else { conf &= ~BYT_DEBOUNCE_EN; } break; default: return -ENOTSUPP; } } writel(conf, conf_reg); return 0; } 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 int offset) { struct intel_pinctrl *vg = gpiochip_get_data(chip); void __iomem *reg = byt_gpio_reg(vg, offset, BYT_VAL_REG); u32 val; scoped_guard(raw_spinlock_irqsave, &byt_lock) val = readl(reg); return !!(val & BYT_LEVEL); } static void byt_gpio_set(struct gpio_chip *chip, unsigned int offset, int value) { struct intel_pinctrl *vg = gpiochip_get_data(chip); void __iomem *reg; u32 old_val; reg = byt_gpio_reg(vg, offset, BYT_VAL_REG); if (!reg) return; guard(raw_spinlock_irqsave)(&byt_lock); old_val = readl(reg); if (value) writel(old_val | BYT_LEVEL, reg); else writel(old_val & ~BYT_LEVEL, reg); } static int byt_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) { struct intel_pinctrl *vg = gpiochip_get_data(chip); void __iomem *reg; u32 value; reg = byt_gpio_reg(vg, offset, BYT_VAL_REG); if (!reg) return -EINVAL; scoped_guard(raw_spinlock_irqsave, &byt_lock) value = readl(reg); if (!(value & BYT_OUTPUT_EN)) return GPIO_LINE_DIRECTION_OUT; if (!(value & BYT_INPUT_EN)) return GPIO_LINE_DIRECTION_IN; return -EINVAL; } static int byt_gpio_direction_input(struct gpio_chip *chip, unsigned int offset) { struct intel_pinctrl *vg = gpiochip_get_data(chip); void __iomem *val_reg = byt_gpio_reg(vg, offset, BYT_VAL_REG); u32 reg; guard(raw_spinlock_irqsave)(&byt_lock); reg = readl(val_reg); reg &= ~BYT_DIR_MASK; reg |= BYT_OUTPUT_EN; writel(reg, val_reg); return 0; } /* * Note despite the temptation this MUST NOT be converted into a call to * pinctrl_gpio_direction_output() + byt_gpio_set() that does not work this * MUST be done as a single BYT_VAL_REG register write. * See the commit message of the commit adding this comment for details. */ static int byt_gpio_direction_output(struct gpio_chip *chip, unsigned int offset, int value) { struct intel_pinctrl *vg = gpiochip_get_data(chip); void __iomem *val_reg = byt_gpio_reg(vg, offset, BYT_VAL_REG); u32 reg; guard(raw_spinlock_irqsave)(&byt_lock); byt_gpio_direct_irq_check(vg, offset); reg = readl(val_reg); reg &= ~BYT_DIR_MASK; if (value) reg |= BYT_LEVEL; else reg &= ~BYT_LEVEL; writel(reg, val_reg); return 0; } static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) { struct intel_pinctrl *vg = gpiochip_get_data(chip); int i; u32 conf0, val; for (i = 0; i < vg->soc->npins; i++) { const struct intel_community *comm; void __iomem *conf_reg, *val_reg; const char *pull_str = NULL; const char *pull = NULL; unsigned int pin; pin = vg->soc->pins[i].number; conf_reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG); if (!conf_reg) { seq_printf(s, "Pin %i: can't retrieve CONF0\n", pin); continue; } val_reg = byt_gpio_reg(vg, pin, BYT_VAL_REG); if (!val_reg) { seq_printf(s, "Pin %i: can't retrieve VAL\n", pin); continue; } scoped_guard(raw_spinlock_irqsave, &byt_lock) { conf0 = readl(conf_reg); val = readl(val_reg); } comm = intel_get_community(vg, pin); if (!comm) { seq_printf(s, "Pin %i: can't retrieve community\n", pin); continue; } char *label __free(kfree) = gpiochip_dup_line_label(chip, i); if (IS_ERR(label)) continue; 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 ?: "Unrequested", val & BYT_INPUT_EN ? " " : "in", val & BYT_OUTPUT_EN ? " " : "out", str_hi_lo(val & BYT_LEVEL), 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, .set_config = gpiochip_generic_config, .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 intel_pinctrl *vg = gpiochip_get_data(gc); irq_hw_number_t hwirq = irqd_to_hwirq(d); void __iomem *reg; reg = byt_gpio_reg(vg, hwirq, BYT_INT_STAT_REG); if (!reg) return; guard(raw_spinlock)(&byt_lock); writel(BIT(hwirq % 32), reg); } static void byt_irq_mask(struct irq_data *d) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); struct intel_pinctrl *vg = gpiochip_get_data(gc); irq_hw_number_t hwirq = irqd_to_hwirq(d); byt_gpio_clear_triggering(vg, hwirq); gpiochip_disable_irq(gc, hwirq); } static void byt_irq_unmask(struct irq_data *d) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); struct intel_pinctrl *vg = gpiochip_get_data(gc); irq_hw_number_t hwirq = irqd_to_hwirq(d); void __iomem *reg; u32 value; gpiochip_enable_irq(gc, hwirq); reg = byt_gpio_reg(vg, hwirq, BYT_CONF0_REG); if (!reg) return; guard(raw_spinlock_irqsave)(&byt_lock); value = readl(reg); switch (irqd_get_trigger_type(d)) { case IRQ_TYPE_LEVEL_HIGH: value |= BYT_TRIG_LVL; fallthrough; case IRQ_TYPE_EDGE_RISING: value |= BYT_TRIG_POS; break; case IRQ_TYPE_LEVEL_LOW: value |= BYT_TRIG_LVL; fallthrough; 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); } static int byt_irq_type(struct irq_data *d, unsigned int type) { struct intel_pinctrl *vg = gpiochip_get_data(irq_data_get_irq_chip_data(d)); irq_hw_number_t hwirq = irqd_to_hwirq(d); void __iomem *reg; u32 value; reg = byt_gpio_reg(vg, hwirq, BYT_CONF0_REG); if (!reg) return -EINVAL; guard(raw_spinlock_irqsave)(&byt_lock); 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); return 0; } static const struct irq_chip byt_gpio_irq_chip = { .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 | IRQCHIP_SET_TYPE_MASKED | IRQCHIP_IMMUTABLE, GPIOCHIP_IRQ_RESOURCE_HELPERS, }; static void byt_gpio_irq_handler(struct irq_desc *desc) { struct irq_data *data = irq_desc_get_irq_data(desc); struct intel_pinctrl *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; /* 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->dev, "Pin %i: can't retrieve INT_STAT%u\n", base / 32, base); continue; } scoped_guard(raw_spinlock, &byt_lock) pending = readl(reg); for_each_set_bit(pin, &pending, 32) generic_handle_domain_irq(vg->chip.irq.domain, base + pin); } chip->irq_eoi(data); } static bool byt_direct_irq_sanity_check(struct intel_pinctrl *vg, int pin, u32 conf0) { int direct_irq, ioapic_direct_irq_base; u8 *match, direct_irq_mux[16]; u32 trig; memcpy_fromio(direct_irq_mux, vg->communities->pad_regs + BYT_DIRECT_IRQ_REG, sizeof(direct_irq_mux)); match = memchr(direct_irq_mux, pin, sizeof(direct_irq_mux)); if (!match) { dev_warn(vg->dev, FW_BUG "Pin %i: DIRECT_IRQ_EN set but no IRQ assigned, clearing\n", pin); return false; } direct_irq = match - direct_irq_mux; /* Base IO-APIC pin numbers come from atom-e3800-family-datasheet.pdf */ ioapic_direct_irq_base = (vg->communities->npins == BYT_NGPIO_SCORE) ? 51 : 67; dev_dbg(vg->dev, "Pin %i: uses direct IRQ %d (IO-APIC %d)\n", pin, direct_irq, direct_irq + ioapic_direct_irq_base); /* * Testing has shown that the way direct IRQs work is that the combination of the * direct-irq-en flag and the direct IRQ mux connect the output of the GPIO's IRQ * trigger block, which normally sets the status flag in the IRQ status reg at * 0x800, to one of the IO-APIC pins according to the mux registers. * * This means that: * 1. The TRIG_MASK bits must be set to configure the GPIO's IRQ trigger block * 2. The TRIG_LVL bit *must* be set, so that the GPIO's input value is directly * passed (1:1 or inverted) to the IO-APIC pin, if TRIG_LVL is not set, * selecting edge mode operation then on the first edge the IO-APIC pin goes * high, but since no write-to-clear write will be done to the IRQ status reg * at 0x800, the detected edge condition will never get cleared. */ trig = conf0 & BYT_TRIG_MASK; if (trig != (BYT_TRIG_POS | BYT_TRIG_LVL) && trig != (BYT_TRIG_NEG | BYT_TRIG_LVL)) { dev_warn(vg->dev, FW_BUG "Pin %i: DIRECT_IRQ_EN set without trigger (CONF0: %#08x), clearing\n", pin, conf0); return false; } return true; } static void byt_init_irq_valid_mask(struct gpio_chip *chip, unsigned long *valid_mask, unsigned int ngpios) { struct intel_pinctrl *vg = gpiochip_get_data(chip); void __iomem *reg; u32 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->npins; i++) { unsigned int pin = vg->soc->pins[i].number; reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG); if (!reg) { dev_warn(vg->dev, "Pin %i: could not retrieve CONF0\n", i); continue; } value = readl(reg); if (value & BYT_DIRECT_IRQ_EN) { if (byt_direct_irq_sanity_check(vg, i, value)) { clear_bit(i, valid_mask); } else { value &= ~(BYT_DIRECT_IRQ_EN | BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL); writel(value, reg); } } else if ((value & BYT_PIN_MUX) == byt_get_gpio_mux(vg, i)) { byt_gpio_clear_triggering(vg, i); dev_dbg(vg->dev, "disabling GPIO %d\n", i); } } } static int byt_gpio_irq_init_hw(struct gpio_chip *chip) { struct intel_pinctrl *vg = gpiochip_get_data(chip); void __iomem *reg; u32 base, value; /* clear interrupt status trigger registers */ for (base = 0; base < vg->soc->npins; base += 32) { reg = byt_gpio_reg(vg, base, BYT_INT_STAT_REG); if (!reg) { dev_warn(vg->dev, "Pin %i: can't retrieve INT_STAT%u\n", base / 32, 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->dev, "GPIO interrupt error, pins misconfigured. INT_STAT%u: %#08x\n", base / 32, value); } return 0; } static int byt_gpio_add_pin_ranges(struct gpio_chip *chip) { struct intel_pinctrl *vg = gpiochip_get_data(chip); struct device *dev = vg->dev; int ret; ret = gpiochip_add_pin_range(chip, dev_name(dev), 0, 0, vg->soc->npins); if (ret) dev_err(dev, "failed to add GPIO pin range\n"); return ret; } static int byt_gpio_probe(struct intel_pinctrl *vg) { struct platform_device *pdev = to_platform_device(vg->dev); struct gpio_chip *gc; int irq, ret; /* Set up gpio chip */ vg->chip = byt_gpio_chip; gc = &vg->chip; gc->label = dev_name(vg->dev); gc->base = -1; gc->can_sleep = false; gc->add_pin_ranges = byt_gpio_add_pin_ranges; gc->parent = vg->dev; gc->ngpio = vg->soc->npins; #ifdef CONFIG_PM_SLEEP vg->context.pads = devm_kcalloc(vg->dev, gc->ngpio, sizeof(*vg->context.pads), GFP_KERNEL); if (!vg->context.pads) return -ENOMEM; #endif /* set up interrupts */ irq = platform_get_irq_optional(pdev, 0); if (irq > 0) { struct gpio_irq_chip *girq; girq = &gc->irq; gpio_irq_chip_set_chip(girq, &byt_gpio_irq_chip); girq->init_hw = byt_gpio_irq_init_hw; girq->init_valid_mask = byt_init_irq_valid_mask; girq->parent_handler = byt_gpio_irq_handler; girq->num_parents = 1; girq->parents = devm_kcalloc(vg->dev, girq->num_parents, sizeof(*girq->parents), GFP_KERNEL); if (!girq->parents) return -ENOMEM; girq->parents[0] = irq; girq->default_type = IRQ_TYPE_NONE; girq->handler = handle_bad_irq; } ret = devm_gpiochip_add_data(vg->dev, gc, vg); if (ret) { dev_err(vg->dev, "failed adding byt-gpio chip\n"); return ret; } return ret; } static int byt_set_soc_data(struct intel_pinctrl *vg, const struct intel_pinctrl_soc_data *soc) { struct platform_device *pdev = to_platform_device(vg->dev); int i; vg->soc = soc; vg->ncommunities = vg->soc->ncommunities; vg->communities = devm_kcalloc(vg->dev, vg->ncommunities, sizeof(*vg->communities), GFP_KERNEL); if (!vg->communities) return -ENOMEM; for (i = 0; i < vg->soc->ncommunities; i++) { struct intel_community *comm = vg->communities + i; *comm = vg->soc->communities[i]; comm->pad_regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(comm->pad_regs)) return PTR_ERR(comm->pad_regs); } 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 }, { } }; static int byt_pinctrl_probe(struct platform_device *pdev) { const struct intel_pinctrl_soc_data *soc_data; struct device *dev = &pdev->dev; struct intel_pinctrl *vg; int ret; soc_data = intel_pinctrl_get_soc_data(pdev); if (IS_ERR(soc_data)) return PTR_ERR(soc_data); vg = devm_kzalloc(dev, sizeof(*vg), GFP_KERNEL); if (!vg) return -ENOMEM; vg->dev = dev; ret = byt_set_soc_data(vg, soc_data); if (ret) { dev_err(dev, "failed to set soc data\n"); return ret; } vg->pctldesc = byt_pinctrl_desc; vg->pctldesc.name = dev_name(dev); vg->pctldesc.pins = vg->soc->pins; vg->pctldesc.npins = vg->soc->npins; vg->pctldev = devm_pinctrl_register(dev, &vg->pctldesc, vg); if (IS_ERR(vg->pctldev)) { dev_err(dev, "failed to register pinctrl driver\n"); return PTR_ERR(vg->pctldev); } ret = byt_gpio_probe(vg); if (ret) return ret; platform_set_drvdata(pdev, vg); return 0; } static int byt_gpio_suspend(struct device *dev) { struct intel_pinctrl *vg = dev_get_drvdata(dev); int i; guard(raw_spinlock_irqsave)(&byt_lock); for (i = 0; i < vg->soc->npins; i++) { void __iomem *reg; u32 value; unsigned int pin = vg->soc->pins[i].number; reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG); if (!reg) { dev_warn(vg->dev, "Pin %i: can't retrieve CONF0\n", i); continue; } value = readl(reg) & BYT_CONF0_RESTORE_MASK; vg->context.pads[i].conf0 = value; reg = byt_gpio_reg(vg, pin, BYT_VAL_REG); if (!reg) { dev_warn(vg->dev, "Pin %i: can't retrieve VAL\n", i); continue; } value = readl(reg) & BYT_VAL_RESTORE_MASK; vg->context.pads[i].val = value; } return 0; } static int byt_gpio_resume(struct device *dev) { struct intel_pinctrl *vg = dev_get_drvdata(dev); int i; guard(raw_spinlock_irqsave)(&byt_lock); for (i = 0; i < vg->soc->npins; i++) { void __iomem *reg; u32 value; unsigned int pin = vg->soc->pins[i].number; reg = byt_gpio_reg(vg, pin, BYT_CONF0_REG); if (!reg) { dev_warn(vg->dev, "Pin %i: can't retrieve CONF0\n", i); continue; } value = readl(reg); if ((value & BYT_CONF0_RESTORE_MASK) != vg->context.pads[i].conf0) { value &= ~BYT_CONF0_RESTORE_MASK; value |= vg->context.pads[i].conf0; writel(value, reg); dev_info(dev, "restored pin %d CONF0 %#08x", i, value); } reg = byt_gpio_reg(vg, pin, BYT_VAL_REG); if (!reg) { dev_warn(vg->dev, "Pin %i: can't retrieve VAL\n", i); continue; } value = readl(reg); if ((value & BYT_VAL_RESTORE_MASK) != vg->context.pads[i].val) { u32 v; v = value & ~BYT_VAL_RESTORE_MASK; v |= vg->context.pads[i].val; if (v != value) { writel(v, reg); dev_dbg(dev, "restored pin %d VAL %#08x\n", i, v); } } } return 0; } static const struct dev_pm_ops byt_gpio_pm_ops = { LATE_SYSTEM_SLEEP_PM_OPS(byt_gpio_suspend, byt_gpio_resume) }; static struct platform_driver byt_gpio_driver = { .probe = byt_pinctrl_probe, .driver = { .name = "byt_gpio", .pm = pm_sleep_ptr(&byt_gpio_pm_ops), .acpi_match_table = byt_gpio_acpi_match, .suppress_bind_attrs = true, }, }; static int __init byt_gpio_init(void) { return platform_driver_register(&byt_gpio_driver); } subsys_initcall(byt_gpio_init); MODULE_IMPORT_NS(PINCTRL_INTEL);
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