[PATCH 11/27] OMAP: DSS2: Add FEAT_VENC_REQUIRES_TV_DAC_CLK

[Tomi Valkeinen]

OMAP3430 requires an 96MHz clock to VENC's DAC, but no other OMAP needs
it.

Add a new feature, FEAT_VENC_REQUIRES_TV_DAC_CLK, which tells if the
clock is needed on this platform, and use that feature in venc.c to
decide if the clock needs enabling.

Signed-off-by: Tomi Valkeinen <tomi.valkei...@ti.com>
---
 drivers/video/omap2/dss/dss_features.c |    3 ++-
 drivers/video/omap2/dss/dss_features.h |    1 +
 drivers/video/omap2/dss/venc.c         |   16 ++++++++++------
 3 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/video/omap2/dss/dss_features.c 
b/drivers/video/omap2/dss/dss_features.c
index 1c18888..a588380 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -286,7 +286,8 @@ static const 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_REVERSE_TXCLKESC,
+               FEAT_DSI_PLL_FREQSEL | FEAT_DSI_REVERSE_TXCLKESC |
+               FEAT_VENC_REQUIRES_TV_DAC_CLK,
 
        .num_mgrs = 2,
        .num_ovls = 3,
diff --git a/drivers/video/omap2/dss/dss_features.h 
b/drivers/video/omap2/dss/dss_features.h
index 07b346f..3058e24 100644
--- a/drivers/video/omap2/dss/dss_features.h
+++ b/drivers/video/omap2/dss/dss_features.h
@@ -51,6 +51,7 @@ enum dss_feat_id {
        FEAT_HDMI_CTS_SWMODE            = 1 << 19,
        FEAT_HANDLE_UV_SEPARATE         = 1 << 20,
        FEAT_ATTR2                      = 1 << 21,
+       FEAT_VENC_REQUIRES_TV_DAC_CLK   = 1 << 22,
 };
 
 /* DSS register field id */
diff --git a/drivers/video/omap2/dss/venc.c b/drivers/video/omap2/dss/venc.c
index 980f919..15b4431 100644
--- a/drivers/video/omap2/dss/venc.c
+++ b/drivers/video/omap2/dss/venc.c
@@ -38,6 +38,7 @@
 #include <plat/cpu.h>
 
 #include "dss.h"
+#include "dss_features.h"
 
 /* Venc registers */
 #define VENC_REV_ID                            0x00
@@ -382,12 +383,15 @@ static void venc_reset(void)
 
 static void venc_enable_clocks(int enable)
 {
-       if (enable)
-               dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK | DSS_CLK_TVFCK |
-                               DSS_CLK_VIDFCK);
-       else
-               dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK | DSS_CLK_TVFCK |
-                               DSS_CLK_VIDFCK);
+       if (enable) {
+               dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK | DSS_CLK_TVFCK);
+               if (dss_has_feature(FEAT_VENC_REQUIRES_TV_DAC_CLK))
+                       dss_clk_enable(DSS_CLK_VIDFCK);
+       } else {
+               dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK | DSS_CLK_TVFCK);
+               if (dss_has_feature(FEAT_VENC_REQUIRES_TV_DAC_CLK))
+                       dss_clk_disable(DSS_CLK_VIDFCK);
+       }
 }
 
 static const struct venc_config *venc_timings_to_config(
-- 
1.7.4.1

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