| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Enrico Weigelt | 910 | 100.00% | 1 | 100.00% |
| Total | 910 | 1 |
// SPDX-License-Identifier: GPL-2.0+ /* * PC-Engines APUv2/APUv3 board platform driver * for gpio buttons and LEDs * * Copyright (C) 2018 metux IT consult * Author: Enrico Weigelt <info@metux.net> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/dmi.h> #include <linux/err.h> #include <linux/kernel.h> #include <linux/leds.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/gpio_keys.h> #include <linux/gpio/machine.h> #include <linux/input.h> #include <linux/platform_data/gpio/gpio-amd-fch.h> /* * NOTE: this driver only supports APUv2/3 - not APUv1, as this one * has completely different register layouts */ /* register mappings */ #define APU2_GPIO_REG_LED1 AMD_FCH_GPIO_REG_GPIO57 #define APU2_GPIO_REG_LED2 AMD_FCH_GPIO_REG_GPIO58 #define APU2_GPIO_REG_LED3 AMD_FCH_GPIO_REG_GPIO59_DEVSLP1 #define APU2_GPIO_REG_MODESW AMD_FCH_GPIO_REG_GPIO32_GE1 #define APU2_GPIO_REG_SIMSWAP AMD_FCH_GPIO_REG_GPIO33_GE2 /* order in which the gpio lines are defined in the register list */ #define APU2_GPIO_LINE_LED1 0 #define APU2_GPIO_LINE_LED2 1 #define APU2_GPIO_LINE_LED3 2 #define APU2_GPIO_LINE_MODESW 3 #define APU2_GPIO_LINE_SIMSWAP 4 /* gpio device */ static int apu2_gpio_regs[] = { [APU2_GPIO_LINE_LED1] = APU2_GPIO_REG_LED1, [APU2_GPIO_LINE_LED2] = APU2_GPIO_REG_LED2, [APU2_GPIO_LINE_LED3] = APU2_GPIO_REG_LED3, [APU2_GPIO_LINE_MODESW] = APU2_GPIO_REG_MODESW, [APU2_GPIO_LINE_SIMSWAP] = APU2_GPIO_REG_SIMSWAP, }; static const char * const apu2_gpio_names[] = { [APU2_GPIO_LINE_LED1] = "front-led1", [APU2_GPIO_LINE_LED2] = "front-led2", [APU2_GPIO_LINE_LED3] = "front-led3", [APU2_GPIO_LINE_MODESW] = "front-button", [APU2_GPIO_LINE_SIMSWAP] = "simswap", }; static const struct amd_fch_gpio_pdata board_apu2 = { .gpio_num = ARRAY_SIZE(apu2_gpio_regs), .gpio_reg = apu2_gpio_regs, .gpio_names = apu2_gpio_names, }; /* gpio leds device */ static const struct gpio_led apu2_leds[] = { { .name = "apu:green:1" }, { .name = "apu:green:2" }, { .name = "apu:green:3" } }; static const struct gpio_led_platform_data apu2_leds_pdata = { .num_leds = ARRAY_SIZE(apu2_leds), .leds = apu2_leds, }; struct gpiod_lookup_table gpios_led_table = { .dev_id = "leds-gpio", .table = { GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED1, NULL, 0, GPIO_ACTIVE_LOW), GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED2, NULL, 1, GPIO_ACTIVE_LOW), GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED3, NULL, 2, GPIO_ACTIVE_LOW), } }; /* gpio keyboard device */ static struct gpio_keys_button apu2_keys_buttons[] = { { .code = KEY_SETUP, .active_low = 1, .desc = "front button", .type = EV_KEY, .debounce_interval = 10, .value = 1, }, }; static const struct gpio_keys_platform_data apu2_keys_pdata = { .buttons = apu2_keys_buttons, .nbuttons = ARRAY_SIZE(apu2_keys_buttons), .poll_interval = 100, .rep = 0, .name = "apu2-keys", }; struct gpiod_lookup_table gpios_key_table = { .dev_id = "gpio-keys-polled", .table = { GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_MODESW, NULL, 0, GPIO_ACTIVE_LOW), } }; /* board setup */ /* note: matching works on string prefix, so "apu2" must come before "apu" */ static const struct dmi_system_id apu_gpio_dmi_table[] __initconst = { /* APU2 w/ legacy bios < 4.0.8 */ { .ident = "apu2", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), DMI_MATCH(DMI_BOARD_NAME, "APU2") }, .driver_data = (void *)&board_apu2, }, /* APU2 w/ legacy bios >= 4.0.8 */ { .ident = "apu2", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), DMI_MATCH(DMI_BOARD_NAME, "apu2") }, .driver_data = (void *)&board_apu2, }, /* APU2 w/ maainline bios */ { .ident = "apu2", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu2") }, .driver_data = (void *)&board_apu2, }, /* APU3 w/ legacy bios < 4.0.8 */ { .ident = "apu3", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), DMI_MATCH(DMI_BOARD_NAME, "APU3") }, .driver_data = (void *)&board_apu2, }, /* APU3 w/ legacy bios >= 4.0.8 */ { .ident = "apu3", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), DMI_MATCH(DMI_BOARD_NAME, "apu3") }, .driver_data = (void *)&board_apu2, }, /* APU3 w/ mainline bios */ { .ident = "apu3", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"), DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu3") }, .driver_data = (void *)&board_apu2, }, {} }; static struct platform_device *apu_gpio_pdev; static struct platform_device *apu_leds_pdev; static struct platform_device *apu_keys_pdev; static struct platform_device * __init apu_create_pdev( const char *name, const void *pdata, size_t sz) { struct platform_device *pdev; pdev = platform_device_register_resndata(NULL, name, PLATFORM_DEVID_NONE, NULL, 0, pdata, sz); if (IS_ERR(pdev)) pr_err("failed registering %s: %ld\n", name, PTR_ERR(pdev)); return pdev; } static int __init apu_board_init(void) { const struct dmi_system_id *id; id = dmi_first_match(apu_gpio_dmi_table); if (!id) { pr_err("failed to detect apu board via dmi\n"); return -ENODEV; } gpiod_add_lookup_table(&gpios_led_table); gpiod_add_lookup_table(&gpios_key_table); apu_gpio_pdev = apu_create_pdev( AMD_FCH_GPIO_DRIVER_NAME, id->driver_data, sizeof(struct amd_fch_gpio_pdata)); apu_leds_pdev = apu_create_pdev( "leds-gpio", &apu2_leds_pdata, sizeof(apu2_leds_pdata)); apu_keys_pdev = apu_create_pdev( "gpio-keys-polled", &apu2_keys_pdata, sizeof(apu2_keys_pdata)); return 0; } static void __exit apu_board_exit(void) { gpiod_remove_lookup_table(&gpios_led_table); gpiod_remove_lookup_table(&gpios_key_table); platform_device_unregister(apu_keys_pdev); platform_device_unregister(apu_leds_pdev); platform_device_unregister(apu_gpio_pdev); } module_init(apu_board_init); module_exit(apu_board_exit); MODULE_AUTHOR("Enrico Weigelt, metux IT consult <info@metux.net>"); MODULE_DESCRIPTION("PC Engines APUv2/APUv3 board GPIO/LED/keys driver"); MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(dmi, apu_gpio_dmi_table); MODULE_ALIAS("platform:pcengines-apuv2"); MODULE_SOFTDEP("pre: platform:" AMD_FCH_GPIO_DRIVER_NAME); MODULE_SOFTDEP("pre: platform:leds-gpio"); MODULE_SOFTDEP("pre: platform:gpio_keys_polled");
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