| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <arch/acpi.h> |
| #include <arch/acpi_device.h> |
| #include <arch/acpigen.h> |
| #include <console/console.h> |
| #include <device/i2c_simple.h> |
| #include <device/device.h> |
| #include <device/path.h> |
| |
| #include "chip.h" |
| |
| #define CS42L42_ACPI_NAME "CRUS" |
| #define CS42L42_ACPI_HID "10134242" |
| |
| static void cs42l42_fill_ssdt(struct device *dev) |
| { |
| struct drivers_i2c_cs42l42_config *config = dev->chip_info; |
| const char *scope = acpi_device_scope(dev); |
| const char *path = acpi_device_path(dev); |
| struct acpi_i2c i2c = { |
| .address = dev->path.i2c.device, |
| .mode_10bit = dev->path.i2c.mode_10bit, |
| .speed = config->bus_speed ? : I2C_SPEED_FAST, |
| .resource = scope, |
| }; |
| struct acpi_dp *dsd; |
| int gpio_index = 0; |
| |
| if (!scope) |
| return; |
| |
| /* Device */ |
| acpigen_write_scope(scope); |
| acpigen_write_device(acpi_device_name(dev)); |
| acpigen_write_name_string("_HID", CS42L42_ACPI_HID); |
| acpigen_write_name_integer("_UID", 0); |
| acpigen_write_name_string("_DDN", dev->chip_ops->name); |
| acpigen_write_STA(acpi_device_status(dev)); |
| |
| /* Resources */ |
| acpigen_write_name("_CRS"); |
| acpigen_write_resourcetemplate_header(); |
| acpi_device_write_i2c(&i2c); |
| /* Use either Interrupt() or GpioInt() */ |
| if (config->irq_gpio.pin_count) |
| acpi_device_write_gpio(&config->irq_gpio); |
| else |
| acpi_device_write_interrupt(&config->irq); |
| |
| /* for cs42l42reset gpio */ |
| if (config->reset_gpio.pin_count) |
| acpi_device_write_gpio(&config->reset_gpio); |
| |
| acpigen_write_resourcetemplate_footer(); |
| |
| /* AAD Child Device Properties */ |
| dsd = acpi_dp_new_table("_DSD"); |
| if (config->irq_gpio.pin_count) |
| acpi_dp_add_gpio(dsd, "irq-gpios", path, |
| gpio_index++, /* Index = 0 */ |
| 0, /* Pin = 0 (There is a single pin in the GPIO resource). */ |
| 0); |
| if (config->reset_gpio.pin_count) |
| acpi_dp_add_gpio(dsd, "reset-gpios", path, |
| gpio_index++, /* Index = 0 or 1 (if irq gpio is written). */ |
| 0, /* Pin = 0 (There is a single pin in the GPIO resource). */ |
| 0); |
| acpi_dp_add_integer(dsd, "cirrus,ts-inv", config->ts_inv ? 1 : 0); |
| acpi_dp_add_integer(dsd, "cirrus,ts-dbnc-rise", config->ts_dbnc_rise); |
| acpi_dp_add_integer(dsd, "cirrus,ts-dbnc-fall", config->ts_dbnc_fall); |
| acpi_dp_add_integer(dsd, "cirrus,btn-det-init-dbnce", config->btn_det_init_dbnce); |
| |
| if (config->btn_det_init_dbnce > 200) { |
| printk(BIOS_ERR, "%s: Incorrect btn_det_init_dbnce(%d). Using default of 100ms\n", |
| __func__, config->btn_det_init_dbnce); |
| config->btn_det_init_dbnce = 100; |
| } |
| |
| acpi_dp_add_integer(dsd, "cirrus,btn-det-event-dbnce", config->btn_det_event_dbnce); |
| |
| if (config->btn_det_event_dbnce > 100) { |
| printk(BIOS_ERR, "%s: Incorrect btn_det_event_dbnce(%d). Using default of 10ms\n", |
| __func__, config->btn_det_event_dbnce); |
| config->btn_det_event_dbnce = 10; |
| } |
| |
| acpi_dp_add_integer_array(dsd, "cirrus,bias-lvls", config->bias_lvls, 4); |
| acpi_dp_add_integer(dsd, "cirrus,hs-bias-ramp-rate", config->hs_bias_ramp_rate); |
| |
| /* Write Device Property Hierarchy */ |
| acpi_dp_write(dsd); |
| |
| acpigen_pop_len(); /* Device */ |
| acpigen_pop_len(); /* Scope */ |
| |
| printk(BIOS_INFO, "%s: %s address 0%xh irq %d\n", |
| acpi_device_path(dev), dev->chip_ops->name, |
| dev->path.i2c.device, config->irq.pin); |
| } |
| |
| static const char *cs42l42_acpi_name(const struct device *dev) |
| { |
| return CS42L42_ACPI_NAME; |
| } |
| |
| static struct device_operations cs42l42_ops = { |
| .read_resources = DEVICE_NOOP, |
| .set_resources = DEVICE_NOOP, |
| .acpi_name = cs42l42_acpi_name, |
| .acpi_fill_ssdt_generator = cs42l42_fill_ssdt, |
| }; |
| |
| static void cs42l42_enable(struct device *dev) |
| { |
| dev->ops = &cs42l42_ops; |
| } |
| |
| struct chip_operations drivers_i2c_cs42l42_ops = { |
| CHIP_NAME("Cirrus Logic CS42l42 Audio Codec") |
| .enable_dev = cs42l42_enable |
| }; |