diff options
| -rw-r--r-- | src/drivers/i2c/rt5645/Kconfig | 5 | ||||
| -rw-r--r-- | src/drivers/i2c/rt5645/Makefile.mk | 3 | ||||
| -rw-r--r-- | src/drivers/i2c/rt5645/chip.h | 17 | ||||
| -rw-r--r-- | src/drivers/i2c/rt5645/rt5645.c | 119 |
4 files changed, 144 insertions, 0 deletions
diff --git a/src/drivers/i2c/rt5645/Kconfig b/src/drivers/i2c/rt5645/Kconfig new file mode 100644 index 0000000000..76cfee8851 --- /dev/null +++ b/src/drivers/i2c/rt5645/Kconfig @@ -0,0 +1,5 @@ +## SPDX-License-Identifier: GPL-2.0-only + +config DRIVERS_I2C_RT5645 + bool + depends on HAVE_ACPI_TABLES diff --git a/src/drivers/i2c/rt5645/Makefile.mk b/src/drivers/i2c/rt5645/Makefile.mk new file mode 100644 index 0000000000..69d5f7e86b --- /dev/null +++ b/src/drivers/i2c/rt5645/Makefile.mk @@ -0,0 +1,3 @@ +## SPDX-License-Identifier: GPL-2.0-only + +ramstage-$(CONFIG_DRIVERS_I2C_RT5645) += rt5645.c diff --git a/src/drivers/i2c/rt5645/chip.h b/src/drivers/i2c/rt5645/chip.h new file mode 100644 index 0000000000..e8537ee6a8 --- /dev/null +++ b/src/drivers/i2c/rt5645/chip.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpi_device.h> + +struct drivers_i2c_rt5645_config { + const char *desc; /* Device Description */ + const char *name; /* ACPI Device Name */ + const char *hid; /* ACPI _HID */ + struct acpi_gpio cbj_sleeve; /* sleeve power gate GPIO */ + struct acpi_gpio hp_detect; + unsigned int uid; + unsigned int bus_speed; + /* Allow GPIO based interrupt or PIRQ */ + struct acpi_gpio irq_gpio; + struct acpi_irq irq; + uint32_t jd_mode; +}; diff --git a/src/drivers/i2c/rt5645/rt5645.c b/src/drivers/i2c/rt5645/rt5645.c new file mode 100644 index 0000000000..28434ee456 --- /dev/null +++ b/src/drivers/i2c/rt5645/rt5645.c @@ -0,0 +1,119 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpi_device.h> +#include <acpi/acpigen.h> +#include <console/console.h> +#include <device/device.h> +#include "chip.h" + +#define RT5645_ACPI_NAME "RT58" +#define RT5645_ACPI_HID "10EC5650" + +#define RT5645_DP_INT(key, val) \ + acpi_dp_add_integer(dp, "realtek," key, (val)) + +static void rt5645_fill_ssdt(const struct device *dev) +{ + struct drivers_i2c_rt5645_config *config = dev->chip_info; + const char *path; + const char *scope = acpi_device_scope(dev); + int cbj_sleeve_index = -1, irq_gpio_index = -1, hp_detect_index = -1; + 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 *dp; + int curr_index = 0; + + if (!config) + return; + + const char *name = acpi_device_name(dev); + if (!scope || !name) + return; + + /* Device */ + acpigen_write_scope(scope); + acpigen_write_device(name); + + if (config->hid) + acpigen_write_name_string("_HID", config->hid); + else + acpigen_write_name_string("_HID", RT5645_ACPI_HID); + acpigen_write_name_integer("_UID", 0); + if (config->desc) + acpigen_write_name_string("_DDN", config->desc); + /* Hide the device because of Microsoft Windows */ + acpigen_write_STA(ACPI_STATUS_DEVICE_HIDDEN_ON); + + /* 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) + irq_gpio_index = acpi_device_write_dsd_gpio(&config->irq_gpio, + &curr_index); + else + acpi_device_write_interrupt(&config->irq); + + /* Add I2C GPIO index */ + cbj_sleeve_index = acpi_device_write_dsd_gpio(&config->cbj_sleeve, + &curr_index); + hp_detect_index = acpi_device_write_dsd_gpio(&config->hp_detect, + &curr_index); + acpigen_write_resourcetemplate_footer(); + + /* _DSD for devicetree properties */ + /* This points to the first pin in the first gpio entry in _CRS */ + path = acpi_device_path(dev); + dp = acpi_dp_new_table("_DSD"); + if (config->irq_gpio.pin_count) + acpi_dp_add_gpio(dp, "irq-gpios", path, irq_gpio_index, 0, + config->irq_gpio.active_low); + if (config->cbj_sleeve.pin_count) + acpi_dp_add_gpio(dp, "cbj-sleeve-gpios", path, cbj_sleeve_index, 0, + config->cbj_sleeve.active_low); + if (config->hp_detect.pin_count) + acpi_dp_add_gpio(dp, "hp-detect-gpios", path, hp_detect_index, 0, + config->hp_detect.active_low); + RT5645_DP_INT("jd-mode", config->jd_mode); + acpi_dp_write(dp); + + acpigen_pop_len(); /* Device */ + acpigen_pop_len(); /* Scope */ + + printk(BIOS_INFO, "%s: %s address 0%xh\n", path, + config->desc ? : dev->chip_ops->name, dev->path.i2c.device); +} + +static const char *rt5645_acpi_name(const struct device *dev) +{ + struct drivers_i2c_rt5645_config *config = dev->chip_info; + static char name[5]; + if (config->name) + return config->name; + + snprintf(name, sizeof(name), "D%03.3X", dev->path.i2c.device); + return name; +} + +static struct device_operations rt5645_ops = { + .read_resources = noop_read_resources, + .set_resources = noop_set_resources, + .acpi_name = rt5645_acpi_name, + .acpi_fill_ssdt = rt5645_fill_ssdt, +}; + +static void rt5645_enable(struct device *dev) +{ + dev->ops = &rt5645_ops; +} + +struct chip_operations drivers_i2c_rt5645_ops = { + .name = "ASoC RT5645 Codec driver", + .enable_dev = rt5645_enable +}; |