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Code Issues Releases Wiki Activity

drm/bridge/lontium-lt9611uxc: fix waiting for EDID to become available

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- Call wake_up() when EDID ready event is received to wake
  wait_event_interruptible_timeout()

- Increase waiting timeout, reading EDID can take longer than 100ms, so
  let's be on a safe side.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Fixes: 0cbbd5b1a0 ("drm: bridge: add support for lontium LT9611UXC bridge")
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210121233303.1221784-2-dmitry.baryshkov@linaro.org
This commit is contained in:
Dmitry Baryshkov 2021-01-22 02:33:01 +03:00 committed by Andrzej Hajda
parent f6b57101a6
commit 053b1b287c
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/bridge/lontium-lt9611uxc.c
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@ -145,8 +145,10 @@ static irqreturn_t lt9611uxc_irq_thread_handler(int irq, void *dev_id)
lt9611uxc_unlock(lt9611uxc);
if (irq_status & BIT(0))
if (irq_status & BIT(0)) {
lt9611uxc->edid_read = !!(hpd_status & BIT(0));
wake_up_all(&lt9611uxc->wq);
}
if (irq_status & BIT(1)) {
if (lt9611uxc->connector.dev)
@ -465,7 +467,7 @@ static enum drm_connector_status lt9611uxc_bridge_detect(struct drm_bridge *brid
static int lt9611uxc_wait_for_edid(struct lt9611uxc *lt9611uxc)
{
return wait_event_interruptible_timeout(lt9611uxc->wq, lt9611uxc->edid_read,
msecs_to_jiffies(100));
msecs_to_jiffies(500));
}
static int lt9611uxc_get_edid_block(void *data, u8 *buf, unsigned int block, size_t len)