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/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpi.h>
#include <acpi/acpi_device.h>
#include <acpi/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(const 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). */
config->irq_gpio.active_low);
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). */
config->reset_gpio.active_low);
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 = noop_read_resources,
.set_resources = noop_set_resources,
.acpi_name = cs42l42_acpi_name,
.acpi_fill_ssdt = 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
};
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