diff options
| author | Martin Roth <martinroth@chromium.org> | 2021-03-31 19:15:33 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2021-04-16 17:38:27 +0000 |
| commit | c7204b5a431f02d0b52e0beba54370ea4eacb216 (patch) | |
| tree | e1c84731fc570d234937e7464dd16c35a61895db | |
| parent | 9aab62c537adeeebcd6e71f3c6b610b1a32d7cdc (diff) | |
mb/google/guybrush: Enable backlight in the OS
Add ACPI code to enable the backlight when we enter the OS.
BUG=b:184198808
TEST=Backlight enabled in the OS
Signed-off-by: Martin Roth <martinroth@chromium.org>
Change-Id: I3e0a6c06120ac5abf0a0d82494e03d9cf80c1f8c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52113
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/mainboard/google/guybrush/mainboard.c | 55 | ||||
| -rw-r--r-- | src/mainboard/google/guybrush/variants/baseboard/gpio.c | 2 |
2 files changed, 56 insertions, 1 deletions
diff --git a/src/mainboard/google/guybrush/mainboard.c b/src/mainboard/google/guybrush/mainboard.c index 7bcbda6113..b406bf35be 100644 --- a/src/mainboard/google/guybrush/mainboard.c +++ b/src/mainboard/google/guybrush/mainboard.c @@ -1,13 +1,23 @@ /* SPDX-License-Identifier: GPL-2.0-or-later */ +#include <acpi/acpi.h> +#include <acpi/acpigen.h> #include <amdblocks/acpimmio.h> #include <amdblocks/amd_pci_util.h> #include <baseboard/variants.h> #include <device/device.h> +#include <gpio.h> #include <soc/acpi.h> #include <variant/ec.h> #include <vendorcode/google/chromeos/chromeos.h> +#define BACKLIGHT_GPIO GPIO_129 +#define METHOD_BACKLIGHT_ENABLE "\\_SB.BKEN" +#define METHOD_BACKLIGHT_DISABLE "\\_SB.BKDS" +#define METHOD_MAINBOARD_INI "\\_SB.MINI" +#define METHOD_MAINBOARD_WAK "\\_SB.MWAK" +#define METHOD_MAINBOARD_PTS "\\_SB.MPTS" + /* * These arrays set up the FCH PCI_INTR registers 0xC00/0xC01. * This table is responsible for physically routing the PIC and @@ -105,11 +115,56 @@ static void mainboard_init(void *chip_info) mainboard_ec_init(); } +static void mainboard_write_blken(void) +{ + acpigen_write_method(METHOD_BACKLIGHT_ENABLE, 0); + acpigen_soc_clear_tx_gpio(BACKLIGHT_GPIO); + acpigen_pop_len(); +} + +static void mainboard_write_blkdis(void) +{ + acpigen_write_method(METHOD_BACKLIGHT_DISABLE, 0); + acpigen_soc_set_tx_gpio(BACKLIGHT_GPIO); + acpigen_pop_len(); +} + +static void mainboard_write_mini(void) +{ + acpigen_write_method(METHOD_MAINBOARD_INI, 0); + acpigen_emit_namestring(METHOD_BACKLIGHT_ENABLE); + acpigen_pop_len(); +} + +static void mainboard_write_mwak(void) +{ + acpigen_write_method(METHOD_MAINBOARD_WAK, 0); + acpigen_emit_namestring(METHOD_BACKLIGHT_ENABLE); + acpigen_pop_len(); +} + +static void mainboard_write_mpts(void) +{ + acpigen_write_method(METHOD_MAINBOARD_PTS, 0); + acpigen_emit_namestring(METHOD_BACKLIGHT_DISABLE); + acpigen_pop_len(); +} + +static void mainboard_fill_ssdt(const struct device *dev) +{ + mainboard_write_blken(); + mainboard_write_blkdis(); + mainboard_write_mini(); + mainboard_write_mpts(); + mainboard_write_mwak(); +} + static void mainboard_enable(struct device *dev) { printk(BIOS_INFO, "Mainboard " CONFIG_MAINBOARD_PART_NUMBER " Enable.\n"); dev->ops->acpi_inject_dsdt = chromeos_dsdt_generator; + dev->ops->acpi_fill_ssdt = mainboard_fill_ssdt; init_tables(); /* Initialize the PIRQ data structures for consumption */ diff --git a/src/mainboard/google/guybrush/variants/baseboard/gpio.c b/src/mainboard/google/guybrush/variants/baseboard/gpio.c index c43548c972..20f4b1f2ca 100644 --- a/src/mainboard/google/guybrush/variants/baseboard/gpio.c +++ b/src/mainboard/google/guybrush/variants/baseboard/gpio.c @@ -137,7 +137,7 @@ static const struct soc_amd_gpio base_gpio_table[] = { PAD_GPO(GPIO_121, LOW), /* GPIO_122 - GPIO_128: Not available */ /* SOC_DISABLE_DISP_BL */ - PAD_GPO(GPIO_129, LOW), + PAD_GPO(GPIO_129, HIGH), /* WLAN_DISABLE */ PAD_GPO(GPIO_130, LOW), /* CLK_REQ3_L */ |