diff options
| author | xuxinxiong <xuxinxiong@huaqin.corp-partner.google.com> | 2021-10-26 20:16:21 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-11-02 08:17:21 +0000 |
| commit | cb3745c407f0c19bfcab06b05549ad20948efff9 (patch) | |
| tree | 7894248656ee79559c49bc9cdad7b27a99d9a2ec /src/drivers/parade/ps8640/ps8640.h | |
| parent | 73161c644e61e7a6e18ebe0cbb04c573545d1e64 (diff) | |
google/trogdor: Add backlight support for Parade ps8640
Add backlight support in ps8640 through the AUX channel using eDP
DPCD registers.
BUG=b:202966352
BRANCH=trogdor
TEST=verified firmware screen works on homestar rev4
Change-Id: Ief1bf56c89c8215427dcbddfc67e8bcd4c3607d2
Signed-off-by: xuxinxiong <xuxinxiong@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58624
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/drivers/parade/ps8640/ps8640.h')
| -rw-r--r-- | src/drivers/parade/ps8640/ps8640.h | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/src/drivers/parade/ps8640/ps8640.h b/src/drivers/parade/ps8640/ps8640.h index 06daad4e3a..fb78be6bd7 100644 --- a/src/drivers/parade/ps8640/ps8640.h +++ b/src/drivers/parade/ps8640/ps8640.h @@ -24,11 +24,33 @@ enum { }; enum { - EDID_LENGTH = 128, - EDID_I2C_ADDR = 0x50, - EDID_EXTENSION_FLAG = 0x7e, + PAGE0_AUXCH_CFG3 = 0x76, + AUXCH_CFG3_RESET = 0xff, + PAGE0_SWAUX_ADDR_7_0 = 0x7d, + PAGE0_SWAUX_ADDR_15_8 = 0x7e, + PAGE0_SWAUX_ADDR_23_16 = 0x7f, + SWAUX_ADDR_MASK = 0xfffff, + PAGE0_SWAUX_LENGTH = 0x80, + SWAUX_LENGTH_MASK = 0xf, + SWAUX_NO_PAYLOAD = BIT(7), + PAGE0_SWAUX_WDATA = 0x81, + PAGE0_SWAUX_RDATA = 0x82, + PAGE0_SWAUX_CTRL = 0x83, + SWAUX_SEND = BIT(0), + PAGE0_SWAUX_STATUS = 0x84, + SWAUX_M_MASK = 0x1f, + SWAUX_STATUS_MASK = (0x7 << 5), + SWAUX_STATUS_NACK = (0x1 << 5), + SWAUX_STATUS_DEFER = (0x2 << 5), + SWAUX_STATUS_ACKM = (0x3 << 5), + SWAUX_STATUS_INVALID = (0x4 << 5), + SWAUX_STATUS_I2C_NACK = (0x5 << 5), + SWAUX_STATUS_I2C_DEFER = (0x6 << 5), + SWAUX_STATUS_TIMEOUT = (0x7 << 5), }; int ps8640_init(uint8_t bus, uint8_t chip); int ps8640_get_edid(uint8_t bus, uint8_t chip, struct edid *out); +void ps8640_backlight_enable(uint8_t bus, uint8_t chip); + #endif |