// SPDX-License-Identifier: GPL-2.0-only OR BSD-3-Clause /* * Copyright 2023 Schweitzer Engineering Laboratories, Inc. * 2350 NE Hopkins Court, Pullman, WA 99163 USA * * Platform support for the b2093 mainboard used in SEL-3350 computers. * Consumes GPIO from the SoC to provide standard LED and power supply * devices. */ #include #include #include #include #include #include #include /* Broxton communities */ #define BXT_NW "INT3452:01" #define BXT_W "INT3452:02" #define BXT_SW "INT3452:03" #define B2093_GPIO_ACPI_ID "SEL0003" #define SEL_PS_A "sel_ps_a" #define SEL_PS_A_DETECT "sel_ps_a_detect" #define SEL_PS_A_GOOD "sel_ps_a_good" #define SEL_PS_B "sel_ps_b" #define SEL_PS_B_DETECT "sel_ps_b_detect" #define SEL_PS_B_GOOD "sel_ps_b_good" /* LEDs */ static const struct gpio_led sel3350_leds[] = { { .name = "sel:green:aux1" }, { .name = "sel:green:aux2" }, { .name = "sel:green:aux3" }, { .name = "sel:green:aux4" }, { .name = "sel:red:alarm" }, { .name = "sel:green:enabled", .default_state = LEDS_GPIO_DEFSTATE_ON }, { .name = "sel:red:aux1" }, { .name = "sel:red:aux2" }, { .name = "sel:red:aux3" }, { .name = "sel:red:aux4" }, }; static const struct gpio_led_platform_data sel3350_leds_pdata = { .num_leds = ARRAY_SIZE(sel3350_leds), .leds = sel3350_leds, }; /* Map GPIOs to LEDs */ static struct gpiod_lookup_table sel3350_leds_table = { .dev_id = "leds-gpio", .table = { GPIO_LOOKUP_IDX(BXT_NW, 49, NULL, 0, GPIO_ACTIVE_HIGH), GPIO_LOOKUP_IDX(BXT_NW, 50, NULL, 1, GPIO_ACTIVE_HIGH), GPIO_LOOKUP_IDX(BXT_NW, 51, NULL, 2, GPIO_ACTIVE_HIGH), GPIO_LOOKUP_IDX(BXT_NW, 52, NULL, 3, GPIO_ACTIVE_HIGH), GPIO_LOOKUP_IDX(BXT_W, 20, NULL, 4, GPIO_ACTIVE_HIGH), GPIO_LOOKUP_IDX(BXT_W, 21, NULL, 5, GPIO_ACTIVE_HIGH), GPIO_LOOKUP_IDX(BXT_SW, 37, NULL, 6, GPIO_ACTIVE_HIGH), GPIO_LOOKUP_IDX(BXT_SW, 38, NULL, 7, GPIO_ACTIVE_HIGH), GPIO_LOOKUP_IDX(BXT_SW, 39, NULL, 8, GPIO_ACTIVE_HIGH), GPIO_LOOKUP_IDX(BXT_SW, 40, NULL, 9, GPIO_ACTIVE_HIGH), {}, } }; /* Map GPIOs to power supplies */ static struct gpiod_lookup_table sel3350_gpios_table = { .dev_id = B2093_GPIO_ACPI_ID ":00", .table = { GPIO_LOOKUP(BXT_NW, 44, SEL_PS_A_DETECT, GPIO_ACTIVE_LOW), GPIO_LOOKUP(BXT_NW, 45, SEL_PS_A_GOOD, GPIO_ACTIVE_LOW), GPIO_LOOKUP(BXT_NW, 46, SEL_PS_B_DETECT, GPIO_ACTIVE_LOW), GPIO_LOOKUP(BXT_NW, 47, SEL_PS_B_GOOD, GPIO_ACTIVE_LOW), {}, } }; /* Power Supplies */ struct sel3350_power_cfg_data { struct gpio_desc *ps_detect; struct gpio_desc *ps_good; }; static int sel3350_power_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct sel3350_power_cfg_data *data = power_supply_get_drvdata(psy); switch (psp) { case POWER_SUPPLY_PROP_HEALTH: if (gpiod_get_value(data->ps_detect)) { if (gpiod_get_value(data->ps_good)) val->intval = POWER_SUPPLY_HEALTH_GOOD; else val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; } else { val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; } break; case POWER_SUPPLY_PROP_PRESENT: val->intval = gpiod_get_value(data->ps_detect); break; case POWER_SUPPLY_PROP_ONLINE: val->intval = gpiod_get_value(data->ps_good); break; default: return -EINVAL; } return 0; } static const enum power_supply_property sel3350_power_properties[] = { POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_ONLINE, }; static const struct power_supply_desc sel3350_ps_a_desc = { .name = SEL_PS_A, .type = POWER_SUPPLY_TYPE_MAINS, .properties = sel3350_power_properties, .num_properties = ARRAY_SIZE(sel3350_power_properties), .get_property = sel3350_power_get_property, }; static const struct power_supply_desc sel3350_ps_b_desc = { .name = SEL_PS_B, .type = POWER_SUPPLY_TYPE_MAINS, .properties = sel3350_power_properties, .num_properties = ARRAY_SIZE(sel3350_power_properties), .get_property = sel3350_power_get_property, }; struct sel3350_data { struct platform_device *leds_pdev; struct power_supply *ps_a; struct power_supply *ps_b; struct sel3350_power_cfg_data ps_a_cfg_data; struct sel3350_power_cfg_data ps_b_cfg_data; }; static int sel3350_probe(struct platform_device *pdev) { int rs; struct sel3350_data *sel3350; struct power_supply_config ps_cfg = {}; sel3350 = devm_kzalloc(&pdev->dev, sizeof(struct sel3350_data), GFP_KERNEL); if (!sel3350) return -ENOMEM; platform_set_drvdata(pdev, sel3350); gpiod_add_lookup_table(&sel3350_leds_table); gpiod_add_lookup_table(&sel3350_gpios_table); sel3350->leds_pdev = platform_device_register_data( NULL, "leds-gpio", PLATFORM_DEVID_NONE, &sel3350_leds_pdata, sizeof(sel3350_leds_pdata)); if (IS_ERR(sel3350->leds_pdev)) { rs = PTR_ERR(sel3350->leds_pdev); dev_err(&pdev->dev, "Failed registering platform device: %d\n", rs); goto err_platform; } /* Power Supply A */ sel3350->ps_a_cfg_data.ps_detect = devm_gpiod_get(&pdev->dev, SEL_PS_A_DETECT, GPIOD_IN); sel3350->ps_a_cfg_data.ps_good = devm_gpiod_get(&pdev->dev, SEL_PS_A_GOOD, GPIOD_IN); ps_cfg.drv_data = &sel3350->ps_a_cfg_data; sel3350->ps_a = devm_power_supply_register(&pdev->dev, &sel3350_ps_a_desc, &ps_cfg); if (IS_ERR(sel3350->ps_a)) { rs = PTR_ERR(sel3350->ps_a); dev_err(&pdev->dev, "Failed registering power supply A: %d\n", rs); goto err_ps; } /* Power Supply B */ sel3350->ps_b_cfg_data.ps_detect = devm_gpiod_get(&pdev->dev, SEL_PS_B_DETECT, GPIOD_IN); sel3350->ps_b_cfg_data.ps_good = devm_gpiod_get(&pdev->dev, SEL_PS_B_GOOD, GPIOD_IN); ps_cfg.drv_data = &sel3350->ps_b_cfg_data; sel3350->ps_b = devm_power_supply_register(&pdev->dev, &sel3350_ps_b_desc, &ps_cfg); if (IS_ERR(sel3350->ps_b)) { rs = PTR_ERR(sel3350->ps_b); dev_err(&pdev->dev, "Failed registering power supply B: %d\n", rs); goto err_ps; } return 0; err_ps: platform_device_unregister(sel3350->leds_pdev); err_platform: gpiod_remove_lookup_table(&sel3350_gpios_table); gpiod_remove_lookup_table(&sel3350_leds_table); return rs; } static void sel3350_remove(struct platform_device *pdev) { struct sel3350_data *sel3350 = platform_get_drvdata(pdev); platform_device_unregister(sel3350->leds_pdev); gpiod_remove_lookup_table(&sel3350_gpios_table); gpiod_remove_lookup_table(&sel3350_leds_table); } static const struct acpi_device_id sel3350_device_ids[] = { { B2093_GPIO_ACPI_ID, 0 }, { "", 0 }, }; MODULE_DEVICE_TABLE(acpi, sel3350_device_ids); static struct platform_driver sel3350_platform_driver = { .probe = sel3350_probe, .remove = sel3350_remove, .driver = { .name = "sel3350-platform", .acpi_match_table = sel3350_device_ids, }, }; module_platform_driver(sel3350_platform_driver); MODULE_AUTHOR("Schweitzer Engineering Laboratories"); MODULE_DESCRIPTION("SEL-3350 platform driver"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_SOFTDEP("pre: pinctrl_broxton leds-gpio");