From: John Stultz <john.stultz@xxxxxxxxxx> commit 4226d9b127cf4758ba0e07931b3f0d59f1b1a50c upstream. Thus this patch changes the EDID probing logic so that we re-use the __adv7511_power_on/off() calls instead of duplciating logic. This does change behavior slightly as it adds the HPD signal pulse to the EDID probe path, but Archit has had a patch to add HPD signal pulse to the EDID probe path before, so this should address the cases where that helped. Another difference is that regcache_mark_dirty() is also called in the power off path once EDID is probed. Cc: David Airlie <airlied@xxxxxxxx> Cc: Archit Taneja <architt@xxxxxxxxxxxxxx> Cc: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Cc: Lars-Peter Clausen <lars@xxxxxxxxxx> Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Cc: stable@xxxxxxxxxxxxxxx Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Tested-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx> Signed-off-by: Archit Taneja <architt@xxxxxxxxxxxxxx> Signed-off-by: Thong Ho <thong.ho.px@xxxxxxxxxxxxxxx> Signed-off-by: Nhan Nguyen <nhan.nguyen.yb@xxxxxxxxxxx> Link: http://patchwork.freedesktop.org/patch/msgid/1484614372-15342-6-git-send-email-john.stultz@xxxxxxxxxx --- drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c index 545ceff..17b9e98 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -573,24 +573,13 @@ static int adv7511_get_modes(struct adv7511 *adv7511, unsigned int count; /* Reading the EDID only works if the device is powered */ - if (!adv7511->powered) { - regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, - ADV7511_POWER_POWER_DOWN, 0); - if (adv7511->i2c_main->irq) { - regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), - ADV7511_INT0_EDID_READY); - regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), - ADV7511_INT1_DDC_ERROR); - } - adv7511->current_edid_segment = -1; - } + if (!adv7511->powered) + __adv7511_power_on(adv7511); edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511); if (!adv7511->powered) - regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, - ADV7511_POWER_POWER_DOWN, - ADV7511_POWER_POWER_DOWN); + __adv7511_power_off(adv7511); kfree(adv7511->edid); adv7511->edid = edid; -- 2.7.4