diff options
| author | Bo-Chen Chen <rex-bc.chen@mediatek.com> | 2022-12-01 16:35:48 +0800 |
|---|---|---|
| committer | Yu-Ping Wu <yupingso@google.com> | 2022-12-12 08:26:58 +0000 |
| commit | c5d0c94868ded8999b0ad6447b315e0d6283a421 (patch) | |
| tree | c47533ab106c883b98e3055a045dd290d0222619 /src/mainboard/google | |
| parent | 7e11dcb5107982e1c596d0291f25eb01507c8d5c (diff) | |
mb/google/geralt: Add support for getting panel id
According to ID table(go/geralt-id), we add panel_id() to read the
panel id from auxadc channel 5.
BUG=b:244208960
TEST=emerge-geralt coreboot
Change-Id: I2c0f4ee5a642c41dda9594fbaf2c63f2b2ebac6e
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70402
Reviewed-by: Yidi Lin <yidilin@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google')
| -rw-r--r-- | src/mainboard/google/geralt/boardid.c | 31 | ||||
| -rw-r--r-- | src/mainboard/google/geralt/panel.h | 8 |
2 files changed, 39 insertions, 0 deletions
diff --git a/src/mainboard/google/geralt/boardid.c b/src/mainboard/google/geralt/boardid.c index 24ea438e40..19d25c4a10 100644 --- a/src/mainboard/google/geralt/boardid.c +++ b/src/mainboard/google/geralt/boardid.c @@ -5,6 +5,7 @@ #include <console/console.h> #include <ec/google/chromeec/ec.h> #include <soc/auxadc.h> +#include "panel.h" /* board_id is provided by ec/google/chromeec/ec_boardid.c */ @@ -16,6 +17,8 @@ enum { RAM_ID_HIGH_CHANNEL = 3, /* SKU ID */ SKU_ID_CHANNEL = 4, + /* PANEL ID */ + PANEL_ID_CHANNEL = 5, }; static const unsigned int ram_voltages[ADC_LEVELS] = { @@ -34,10 +37,27 @@ static const unsigned int ram_voltages[ADC_LEVELS] = { [11] = 1342600, }; +static const unsigned int panel_voltages[ADC_LEVELS] = { + /* ID : Voltage (unit: uV) */ + [0] = 0, + [1] = 283000, + [2] = 394000, + [3] = 503000, + [4] = 608000, + [5] = 712000, + [6] = 823000, + [7] = 937000, + [8] = 1046000, + [9] = 1155000, + [10] = 1277000, + [11] = 1434000, +}; + static const unsigned int *adc_voltages[] = { [RAM_ID_LOW_CHANNEL] = ram_voltages, [RAM_ID_HIGH_CHANNEL] = ram_voltages, [SKU_ID_CHANNEL] = ram_voltages, + [PANEL_ID_CHANNEL] = panel_voltages, }; static uint32_t get_adc_index(unsigned int channel) @@ -58,6 +78,17 @@ static uint32_t get_adc_index(unsigned int channel) return id; } +/* Returns the ID for LCD module (type of panel). */ +uint32_t panel_id(void) +{ + static uint32_t cached_panel_id = BOARD_ID_INIT; + + if (cached_panel_id == BOARD_ID_INIT) + cached_panel_id = get_adc_index(PANEL_ID_CHANNEL); + + return cached_panel_id; +} + uint32_t sku_id(void) { static uint32_t cached_sku_code = BOARD_ID_INIT; diff --git a/src/mainboard/google/geralt/panel.h b/src/mainboard/google/geralt/panel.h new file mode 100644 index 0000000000..e940094da0 --- /dev/null +++ b/src/mainboard/google/geralt/panel.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __MAINBOARD_GOOGLE_GERALT_PANEL_H__ +#define __MAINBOARD_GOOGLE_GERALT_PANEL_H__ + +uint32_t panel_id(void); + +#endif |