Kevin Chiu | fb79603 | 2021-03-22 19:34:30 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #include <ec/google/chromeec/ec.h> |
| 4 | #include <baseboard/variants.h> |
| 5 | #include <variant/sku.h> |
| 6 | #include <string.h> |
| 7 | #include <drivers/i2c/hid/chip.h> |
| 8 | |
| 9 | extern struct chip_operations drivers_i2c_generic_ops; |
| 10 | extern struct chip_operations drivers_i2c_da7219_ops; |
| 11 | |
| 12 | void variant_devtree_update(void) |
| 13 | { |
| 14 | uint32_t sku = google_chromeec_get_sku_id(); |
| 15 | struct device *mmio_dev = NULL, *child = NULL; |
| 16 | struct device *alc_dev = NULL, *da7219_dev = NULL; |
| 17 | |
| 18 | while (1) { |
| 19 | mmio_dev = dev_find_path(mmio_dev, DEVICE_PATH_MMIO); |
| 20 | if (mmio_dev == NULL) |
| 21 | break; |
| 22 | if (mmio_dev->path.mmio.addr == 0xfedc2000) |
| 23 | break; |
| 24 | } |
| 25 | |
| 26 | if (mmio_dev == NULL) |
| 27 | return; |
| 28 | |
| 29 | while ((child = dev_bus_each_child(mmio_dev->link_list, child)) != NULL) { |
| 30 | if (child->path.type != DEVICE_PATH_I2C) |
| 31 | continue; |
| 32 | if (child->path.i2c.device != 0x1a) |
| 33 | continue; |
| 34 | if (child->chip_ops == &drivers_i2c_generic_ops) { |
| 35 | struct drivers_i2c_generic_config *config = child->chip_info; |
| 36 | if (!strcmp(config->hid, "10EC5682")) |
| 37 | alc_dev = child; |
| 38 | } else if (child->chip_ops == &drivers_i2c_da7219_ops) { |
| 39 | da7219_dev = child; |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | switch (sku) { |
| 44 | default: |
| 45 | /* da7219 only */ |
| 46 | if (da7219_dev) |
| 47 | da7219_dev->enabled = 1; |
| 48 | if (alc_dev) |
| 49 | alc_dev->enabled = 0; |
| 50 | break; |
| 51 | case SKU_BARLA_ALC5682_44: |
| 52 | case SKU_BARLA_ALC5682_45: |
| 53 | case SKU_BARLA_ALC5682_46: |
| 54 | case SKU_BARLA_ALC5682_47: |
| 55 | /* alc5682 only */ |
| 56 | if (da7219_dev) |
| 57 | da7219_dev->enabled = 0; |
| 58 | if (alc_dev) |
| 59 | alc_dev->enabled = 1; |
| 60 | break; |
| 61 | } |
| 62 | } |