From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Wed, 12 Oct 2011 07:13:14 +0000 (+0300)
Subject: OMAPDSS: DSI: flush posted write in send_bta
X-Git-Tag: v3.3-rc1~59^2~2^2~105
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=968f8e97a3291a3c7c9a2dee1a85a092de638f65;p=karo-tx-linux.git

OMAPDSS: DSI: flush posted write in send_bta

Flush posted write after setting the bit to send the BTA to ensure the
BTA is sent right away, as the code in dsi_vc_send_bta_sync() waits for
an interrupt caused indirectly by sending the BTA.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index 1331f92f11c2..4b1c07443753 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -2913,6 +2913,9 @@ static int dsi_vc_send_bta(struct platform_device *dsidev, int channel)
 
 	REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
 
+	/* flush posted write */
+	dsi_read_reg(dsidev, DSI_VC_CTRL(channel));
+
 	return 0;
 }