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mb/google/zork: Use dev_nested_path for dmic gpio update 

Create function update_dmic_gpio to update DMIC GPIO for ACP machine and
use find_dev_nested_path function for consistency.

BUG=None
BRANCH=None
TEST=None

Change-Id: I96cf207f24c6117d98ff2bf7e6e5cd282489e805
Signed-off-by: Josie Nordrum <josienordrum@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44158
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Josie Nordrum 2020-08-04 12:16:50 -07:00 committed by Furquan Shaikh
parent cc72e15c26
commit 55fefbe39d
1 changed files with 42 additions and 30 deletions
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72
src/mainboard/google/zork/variants/baseboard/ramstage_common.c
View File

@ -65,44 +65,56 @@ static void update_hp_int_odl(void)
}
void variant_audio_update(void)
static void update_dmic_gpio(void)
{
const struct device *gpp_a_dev;
const struct device *acp_dev;
struct device *machine_dev = NULL;
static const struct device_path acp_machine_path[] = {
{
.type = DEVICE_PATH_PCI,
.pci.devfn = PCIE_GPP_A_DEVFN
},
{
.type = DEVICE_PATH_PCI,
.pci.devfn = AUDIO_DEVFN
},
{
.type = DEVICE_PATH_GENERIC,
.generic.id = 0,
.generic.subid = 0
}
};
const struct device *machine_dev;
struct drivers_amd_i2s_machine_dev_config *cfg;
struct acpi_gpio *gpio;
if (variant_uses_v3_schematics())
return;
gpp_a_dev = pcidev_path_on_root(PCIE_GPP_A_DEVFN);
if (gpp_a_dev == NULL)
machine_dev = find_dev_nested_path(
pci_root_bus(), acp_machine_path, ARRAY_SIZE(acp_machine_path));
if (!machine_dev) {
printk(BIOS_ERR, "%s: Failed to find ACP machine device\n", __func__);
return;
acp_dev = pcidev_path_behind(gpp_a_dev->link_list, AUDIO_DEVFN);
if (acp_dev == NULL)
return;
while ((machine_dev = dev_bus_each_child(acp_dev->link_list, machine_dev)) != NULL) {
struct drivers_amd_i2s_machine_dev_config *cfg;
struct acpi_gpio *gpio;
if (machine_dev->chip_info == NULL)
continue;
if (machine_dev->chip_ops != &drivers_amd_i2s_machine_dev_ops)
continue;
cfg = machine_dev->chip_info;
gpio = &cfg->dmic_select_gpio;
if (CONFIG(BOARD_GOOGLE_BASEBOARD_TREMBYLE))
gpio->pins[0] = GPIO_13;
else
gpio->pins[0] = GPIO_6;
break;
}
if (machine_dev->chip_ops != &drivers_amd_i2s_machine_dev_ops) {
printk(BIOS_ERR, "%s: Incorrect device found\n", __func__);
return;
}
cfg = config_of(machine_dev);
gpio = &cfg->dmic_select_gpio;
if (CONFIG(BOARD_GOOGLE_BASEBOARD_TREMBYLE))
gpio->pins[0] = GPIO_13;
else
gpio->pins[0] = GPIO_6;
}
void variant_audio_update(void)
{
update_dmic_gpio();
update_hp_int_odl();
}