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ps8640: disable mipi mcs

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disable ps8640 mipi mcs function to avoid that the normal mipi dsi
signal is recognized as msc cmd.

BUG=chrome-os-partner:56346
BRANCH=none
TEST=build pass elm and show ui

Change-Id: I85b9f1e6677e4bf8ab1e30c2e69445079fff2d18
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Reviewed-on: https://chromium-review.googlesource.com/373219
Commit-Ready: Daniel Kurtz <djkurtz@chromium.org>
Tested-by: jitao shi <jitao.shi@mediatek.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
This commit is contained in:
Jitao Shi 2016-08-19 16:00:01 +08:00 • committed by chrome-bot
parent 5e8690e0c7
commit 4fd441b463
2 changed files with 13 additions and 0 deletions
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10
src/drivers/parade/ps8640/ps8640.c
View file

@ -76,6 +76,16 @@ int ps8640_init(uint8_t bus, uint8_t chip)
}
mdelay(50);
/**
* The Manufacturer Command Set (MCS) is a device dependent interface
* intended for factory programming of the display module default
* parameters. Once the display module is configured, the MCS shall be
* disabled by the manufacturer. Once disabled, all MCS commands are
* ignored by the display interface.
*/
i2c_write_field(bus, chip + 2, PAGE2_MCS_EN, 0x0, MCS_EN_MASK,
MCS_EN_SHIFT);
i2c_writeb(bus, chip + 3, PAGE3_SET_ADD, VDO_CTL_ADD);
i2c_writeb(bus, chip + 3, PAGE3_SET_VAL, VDO_DIS);
i2c_writeb(bus, chip + 3, PAGE3_SET_ADD, VDO_CTL_ADD);

3
src/drivers/parade/ps8640/ps8640.h
View file

@ -26,6 +26,9 @@ enum {
PS_GPIO9 = BIT(1),
I2C_BYPASS_EN = BIT(7),
PAGE2_MCS_EN = 0xf3,
MCS_EN_SHIFT = 0,
MCS_EN_MASK = 0x1,
PAGE3_SET_ADD = 0xfe,
PAGE3_SET_VAL = 0xff,
VDO_CTL_ADD = 0x13,