Unverified Commit 42240113 authored by Pin-yen Lin's avatar Pin-yen Lin Committed by Robert Foss
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drm/bridge: ps8640: Use constant sleep time for polling hpd 



The default hpd_wait_us in panel_edp.c is 2 seconds. This makes the
sleep time in the polling of _ps8640_wait_hpd_asserted become 200ms.
Change it to a constant 20ms to speed up the function.

Signed-off-by: default avatarPin-yen Lin <treapking@chromium.org>
Reviewed-by: default avatarDouglas Anderson <dianders@chromium.org>
Reviewed-by: default avatarRobert Foss <rfoss@kernel.org>
Signed-off-by: default avatarRobert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230331030204.1179524-1-treapking@chromium.org
parent ca161b25

drivers/gpu/drm/bridge/parade-ps8640.c

+1 −1
Original line number Diff line number Diff line
@@ -184,7 +184,7 @@ static int _ps8640_wait_hpd_asserted(struct ps8640 *ps_bridge, unsigned long wai 
	 * actually connected to GPIO9).

	 */

	ret = regmap_read_poll_timeout(map, PAGE2_GPIO_H, status,

				       status & PS_GPIO9, wait_us / 10, wait_us);

				       status & PS_GPIO9, 20000, wait_us);



	/*

	 * The first time we see HPD go high after a reset we delay an extra