src/drivers/i2c/rt1011/rt1011.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi_device.h>
   4 #include <acpi/acpigen.h>
   5 #include <console/console.h>
   6 #include <device/i2c.h>
   7 #include <device/device.h>
   8 #include <stdint.h>
   9 #include <stdio.h>
  10 #include <vendorcode/google/dsm_calib.h>
  11 #include "chip.h"
  12
  13 #define RT1011_ACPI_HID "10EC1011"
  14
  15 #define RT1011_DP_INT(key, val) acpi_dp_add_integer(dp, "realtek," key, (val))
  16
  17 static void rt1011_fill_ssdt(const struct device *dev)
  18 {
  19         struct drivers_i2c_rt1011_config *config = dev->chip_info;
  20         const char *scope = acpi_device_scope(dev);
  21         struct acpi_i2c i2c = {
  22                 .address = dev->path.i2c.device,
  23                 .mode_10bit = dev->path.i2c.mode_10bit,
  24                 .speed = I2C_SPEED_FAST,
  25                 .resource = scope,
  26         };
  27         struct acpi_dp *dp;
  28         uint64_t r0_value, temp_value;
  29
  30         if (!scope)
  31                 return;
  32
  33         /* Device */
  34         acpigen_write_scope(scope);
  35         acpigen_write_device(acpi_device_name(dev));
  36         acpigen_write_name_string("_HID", RT1011_ACPI_HID);
  37         acpigen_write_name_integer("_UID", config->uid);
  38         acpigen_write_name_string("_DDN", config->desc);
  39         acpigen_write_STA(acpi_device_status(dev));
  40
  41         /* Resources */
  42         acpigen_write_name("_CRS");
  43         acpigen_write_resourcetemplate_header();
  44         acpi_device_write_i2c(&i2c);
  45         acpigen_write_resourcetemplate_footer();
  46
  47         /* Device Properties */
  48         if (CONFIG(GOOGLE_DSM_CALIB)) {
  49                 if (get_dsm_calibration_from_key(config->r0_calib_key, &r0_value)
  50                     || get_dsm_calibration_from_key(config->temperature_calib_key,
  51                                                     &temp_value)) {
  52                         printk(BIOS_ERR,
  53                                "Failed to get dsm_calib parameters from VPD"
  54                                " with key %s and %s\n",
  55                                config->r0_calib_key, config->temperature_calib_key);
  56                 } else {
  57                         dp = acpi_dp_new_table("_DSD");
  58                         RT1011_DP_INT("r0_calib", r0_value);
  59                         RT1011_DP_INT("temperature_calib", temp_value);
  60                         acpi_dp_write(dp);
  61                         printk(BIOS_INFO, "set dsm_calib properties\n");
  62                 }
  63         }
  64
  65         acpigen_pop_len(); /* Device */
  66         acpigen_pop_len(); /* Scope */
  67
  68         printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev), dev->chip_ops->name,
  69                dev->path.i2c.device);
  70 }
  71
  72 static const char *rt1011_acpi_name(const struct device *dev)
  73 {
  74         struct drivers_i2c_rt1011_config *config = dev->chip_info;
  75         static char name[5];
  76
  77         if (config->name)
  78                 return config->name;
  79
  80         snprintf(name, sizeof(name), "D%03.3X", dev->path.i2c.device);
  81         return name;
  82 }
  83
  84 static struct device_operations rt1011_ops = {
  85         .read_resources = noop_read_resources,
  86         .set_resources = noop_set_resources,
  87         .acpi_name = rt1011_acpi_name,
  88         .acpi_fill_ssdt = rt1011_fill_ssdt,
  89 };
  90
  91 static void rt1011_enable(struct device *dev)
  92 {
  93         struct drivers_i2c_rt1011_config *config = dev->chip_info;
  94
  95         if (!config)
  96                 return;
  97
  98         dev->ops = &rt1011_ops;
  99
 100         /* Name the device as per description provided in devicetree */
 101         if (config->desc)
 102                 dev->name = config->desc;
 103 }
 104
 105 struct chip_operations drivers_i2c_rt1011_ops = {
 106         .name = "Realtek RT1011 Codec",
 107         .enable_dev = rt1011_enable
 108 };