src/mainboard/google/kahlee/variants/treeya/audio.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <console/console.h>
   4 #include <ec/google/chromeec/ec.h>
   5 #include <baseboard/variants.h>
   6 #include <variant/sku.h>
   7 #include <string.h>
   8 #include <drivers/i2c/hid/chip.h>
   9
  10 #define RT58_I2C_ADDRESS 0x1a
  11
  12 extern struct chip_operations drivers_i2c_generic_ops;
  13 extern struct chip_operations drivers_i2c_da7219_ops;
  14
  15 void variant_devtree_update(void)
  16 {
  17         struct device *mmio_dev = NULL, *child = NULL;
  18         struct device *alc_dev = NULL, *da7219_dev = NULL;
  19
  20         do {
  21                 mmio_dev = dev_find_path(mmio_dev, DEVICE_PATH_MMIO);
  22                 if (!mmio_dev) {
  23                         printk(BIOS_INFO, "Checking audio codec\n");
  24                         return;
  25                 }
  26         } while (mmio_dev->path.mmio.addr != APU_I2C0_BASE);
  27
  28         while ((child = dev_bus_each_child(mmio_dev->downstream, child)) != NULL) {
  29                 if (child->path.type != DEVICE_PATH_I2C)
  30                         continue;
  31                 if (child->path.i2c.device != RT58_I2C_ADDRESS)
  32                         continue;
  33                 if (child->chip_ops == &drivers_i2c_generic_ops) {
  34                         struct drivers_i2c_generic_config *config = child->chip_info;
  35                         if (!strcmp(config->hid, "10EC5682"))
  36                                 alc_dev = child;
  37                 } else if (child->chip_ops == &drivers_i2c_da7219_ops) {
  38                         da7219_dev = child;
  39                 }
  40         }
  41
  42         switch (google_chromeec_get_sku_id()) {
  43         case SKU_TREEYA_ALC5682_AE:
  44         case SKU_TREEYA_ALC5682_AF:
  45                 /* alc5682 only */
  46                 if (da7219_dev)
  47                         da7219_dev->enabled = 0;
  48                 if (alc_dev)
  49                         alc_dev->enabled = 1;
  50                 break;
  51         default:
  52                 /* da7219 only */
  53                 if (da7219_dev)
  54                         da7219_dev->enabled = 1;
  55                 if (alc_dev)
  56                         alc_dev->enabled = 0;
  57                 break;
  58         }
  59 }