static void gpio_regulator_fill_ssdt_generator(struct device *dev) { struct drivers_generic_gpio_regulator_config *config = dev->chip_info; const char *scope = acpi_device_scope(dev); const char *path = acpi_device_path(dev); struct acpi_dp *dsd; if (!dev->enabled || !scope || !path || !config->gpio.pin_count) return; /* Device */ acpigen_write_scope(scope); acpigen_write_device(acpi_device_name(dev)); /* _HID is set to PRP0001 */ acpigen_write_name_string("_HID", ACPI_DT_NAMESPACE_HID); /* Resources - _CRS */ acpigen_write_name("_CRS"); acpigen_write_resourcetemplate_header(); acpi_device_write_gpio(&config->gpio); acpigen_write_resourcetemplate_footer(); /* DSD */ dsd = acpi_dp_new_table("_DSD"); acpi_dp_add_string(dsd, "compatible", "regulator-fixed"); acpi_dp_add_string(dsd, "regulator-name", config->name); acpi_dp_add_gpio(dsd, "gpio-gpios", path, 0, 0, config->gpio.polarity); if (config->enabled_on_boot) acpi_dp_add_string(dsd, "regulator-boot-on", "on"); if (config->gpio.polarity == ACPI_GPIO_ACTIVE_HIGH) acpi_dp_add_string(dsd, "enable-active-high", "on"); acpi_dp_write(dsd); acpigen_pop_len(); /* Device */ acpigen_pop_len(); /* Scope */ }
static void spi_acpi_fill_ssdt_generator(struct device *dev) { struct drivers_spi_acpi_config *config = dev->chip_info; const char *scope = acpi_device_scope(dev); const char *path = acpi_device_path(dev); struct acpi_spi spi = { .device_select = dev->path.spi.cs, .speed = config->speed ? : 1 * MHz, .resource = scope, .device_select_polarity = SPI_POLARITY_LOW, .wire_mode = SPI_4_WIRE_MODE, .data_bit_length = 8, .clock_phase = SPI_CLOCK_PHASE_FIRST, .clock_polarity = SPI_POLARITY_LOW, }; int curr_index = 0; int irq_gpio_index = -1; int reset_gpio_index = -1; int enable_gpio_index = -1; if (!dev->enabled || !scope) return; if (spi_acpi_get_bus(dev) == -1) { printk(BIOS_ERR, "%s: ERROR: Cannot get bus for device.\n", dev_path(dev)); return; } if (!config->hid) { printk(BIOS_ERR, "%s: ERROR: HID required.\n", dev_path(dev)); return; } /* Device */ acpigen_write_scope(scope); acpigen_write_device(acpi_device_name(dev)); acpigen_write_name_string("_HID", config->hid); if (config->cid) acpigen_write_name_string("_CID", config->cid); acpigen_write_name_integer("_UID", config->uid); if (config->desc) acpigen_write_name_string("_DDN", config->desc); /* Resources */ acpigen_write_name("_CRS"); acpigen_write_resourcetemplate_header(); acpi_device_write_spi(&spi); /* Use either Interrupt() or GpioInt() */ if (config->irq_gpio.pin_count) irq_gpio_index = spi_acpi_write_gpio(&config->irq_gpio, &curr_index); else acpi_device_write_interrupt(&config->irq); /* Add enable/reset GPIOs if needed */ if (spi_acpi_add_gpios_to_crs(config)) { reset_gpio_index = spi_acpi_write_gpio(&config->reset_gpio, &curr_index); enable_gpio_index = spi_acpi_write_gpio(&config->enable_gpio, &curr_index); } acpigen_write_resourcetemplate_footer(); /* Wake capabilities */ if (config->wake) { acpigen_write_name_integer("_S0W", 4); acpigen_write_PRW(config->wake, 3); }; /* Write device properties if needed */ if (config->compat_string || irq_gpio_index >= 0 || reset_gpio_index >= 0 || enable_gpio_index >= 0) { struct acpi_dp *dsd = acpi_dp_new_table("_DSD"); if (config->compat_string) acpi_dp_add_string(dsd, "compatible", config->compat_string); if (irq_gpio_index >= 0) acpi_dp_add_gpio(dsd, "irq-gpios", path, irq_gpio_index, 0, config->irq_gpio.polarity); if (reset_gpio_index >= 0) acpi_dp_add_gpio(dsd, "reset-gpios", path, reset_gpio_index, 0, config->reset_gpio.polarity); if (enable_gpio_index >= 0) acpi_dp_add_gpio(dsd, "enable-gpios", path, enable_gpio_index, 0, config->enable_gpio.polarity); acpi_dp_write(dsd); } /* Power Resource */ if (config->has_power_resource) acpi_device_add_power_res( &config->reset_gpio, config->reset_delay_ms, &config->enable_gpio, config->enable_delay_ms); acpigen_pop_len(); /* Device */ acpigen_pop_len(); /* Scope */ printk(BIOS_INFO, "%s: %s at %s\n", path, config->desc ? : dev->chip_ops->name, dev_path(dev)); } static const char *spi_acpi_name(struct device *dev) { struct drivers_spi_acpi_config *config = dev->chip_info; static char name[5]; if (config->name) return config->name; snprintf(name, sizeof(name), "S%03.3X", spi_acpi_get_bus(dev)); name[4] = '\0'; return name; } static struct device_operations spi_acpi_ops = { .read_resources = DEVICE_NOOP, .set_resources = DEVICE_NOOP, .enable_resources = DEVICE_NOOP, .acpi_name = &spi_acpi_name, .acpi_fill_ssdt_generator = &spi_acpi_fill_ssdt_generator, }; static void spi_acpi_enable(struct device *dev) { dev->ops = &spi_acpi_ops; } struct chip_operations drivers_spi_acpi_ops = { CHIP_NAME("SPI Device") .enable_dev = &spi_acpi_enable };