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Commit a702c859 authored by Tomi Valkeinen's avatar Tomi Valkeinen
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OMAPDSS: DSI: flush posted write when entering ULPS 



Flush posted write between writing the ULPS enable bits and waiting for
the interrupt.

Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent a47161a5

drivers/video/omap2/dss/dsi.c

+6 −0
Original line number Diff line number Diff line
@@ -3561,6 +3561,9 @@ static int dsi_enter_ulps(struct platform_device *dsidev) 
	REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG2, (1 << 0) | (1 << 1) | (1 << 2),

		7, 5);



	/* flush posted write and wait for SCP interface to finish the write */

	dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG2);



	if (wait_for_completion_timeout(&completion,

				msecs_to_jiffies(1000)) == 0) {

		DSSERR("ULPS enable timeout\n");
@@ -3575,6 +3578,9 @@ static int dsi_enter_ulps(struct platform_device *dsidev) 
	REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG2, (0 << 0) | (0 << 1) | (0 << 2),

		7, 5);



	/* flush posted write and wait for SCP interface to finish the write */

	dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG2);



	dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_ULPS);



	dsi_if_enable(dsidev, false);