OMAP: DSS2: DSI: Remove CIO LDO status check

CIO LDO status check seems to be broken on OMAP3630+ chips, and it's
also quite unclear what LDO status actually tells and when its status
changes.

This patch removes the whole check on the grounds that if there's a
problem with the LDO, we should anyway catch the problem as we check the
CIO power state and CIO reset status.

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

drivers/video/omap2/dss/dsi.c

@@ -1952,14 +1952,6 @@ static int dsi_complexio_init(struct omap_dss_device *dssdev)
 		goto err;
 	}
 
-	if (dss_has_feature(FEAT_DSI_LDO_STATUS)) {
-		if (wait_for_bit_change(DSI_COMPLEXIO_CFG1, 21, 1) != 1) {
-			DSSERR("ComplexIO LDO power down.\n");
-			r = -ENODEV;
-			goto err;
-		}
-	}
-
 	dsi_complexio_timings();
 
 	/*

drivers/video/omap2/dss/dss_features.c

@@ -253,7 +253,7 @@ static struct omap_dss_features omap3430_dss_features = {
 		FEAT_LCDENABLESIGNAL | FEAT_PCKFREEENABLE |
 		FEAT_FUNCGATED | FEAT_ROWREPEATENABLE |
 		FEAT_LINEBUFFERSPLIT | FEAT_RESIZECONF |
-		FEAT_DSI_PLL_FREQSEL | FEAT_DSI_LDO_STATUS,
+		FEAT_DSI_PLL_FREQSEL,
 
 	.num_mgrs = 2,
 	.num_ovls = 3,
@@ -273,7 +273,7 @@ static struct omap_dss_features omap3630_dss_features = {
 		FEAT_PRE_MULT_ALPHA | FEAT_FUNCGATED |
 		FEAT_ROWREPEATENABLE | FEAT_LINEBUFFERSPLIT |
 		FEAT_RESIZECONF | FEAT_DSI_PLL_PWR_BUG |
-		FEAT_DSI_PLL_FREQSEL |FEAT_DSI_LDO_STATUS,
+		FEAT_DSI_PLL_FREQSEL,
 
 	.num_mgrs = 2,
 	.num_ovls = 3,

drivers/video/omap2/dss/dss_features.h

@@ -43,9 +43,8 @@ enum dss_feat_id {
 	/* DSI-PLL power command 0x3 is not working */
 	FEAT_DSI_PLL_PWR_BUG		= 1 << 13,
 	FEAT_DSI_PLL_FREQSEL		= 1 << 14,
-	FEAT_DSI_LDO_STATUS		= 1 << 15,
-	FEAT_DSI_DCS_CMD_CONFIG_VC	= 1 << 16,
-	FEAT_DSI_VC_OCP_WIDTH		= 1 << 17,
+	FEAT_DSI_DCS_CMD_CONFIG_VC	= 1 << 15,
+	FEAT_DSI_VC_OCP_WIDTH		= 1 << 16,
 };
 
 /* DSS register field id */