OMAP4: DSS2: HDMI: Select between HDMI VENC clock source.

Adding function to select between HDMI or VENC clock source.
Signed-off-by: NMythri P K <mythripk@ti.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/dss/dss.c

@@ -605,6 +605,11 @@ void dss_set_dac_pwrdn_bgz(bool enable)
 	REG_FLD_MOD(DSS_CONTROL, enable, 5, 5);	/* DAC Power-Down Control */
 }
 
+void dss_select_hdmi_venc_clk_source(enum dss_hdmi_venc_clk_source_select hdmi)
+{
+	REG_FLD_MOD(DSS_CONTROL, hdmi, 15, 15);	/* VENC_HDMI_SWITCH */
+}
+
 static int dss_init(void)
 {
 	int r;

drivers/video/omap2/dss/dss.h

@@ -126,6 +126,11 @@ enum dss_clk_source {
 						 * OMAP4: DSS_FCLK */
 };
 
+enum dss_hdmi_venc_clk_source_select {
+	DSS_VENC_TV_CLK = 0,
+	DSS_HDMI_M_PCLK = 1,
+};
+
 struct dss_clock_info {
 	/* rates that we get with dividers below */
 	unsigned long fck;
@@ -214,6 +219,7 @@ void dss_recheck_connections(struct omap_dss_device *dssdev, bool force);
 int dss_init_platform_driver(void);
 void dss_uninit_platform_driver(void);
 
+void dss_select_hdmi_venc_clk_source(enum dss_hdmi_venc_clk_source_select);
 void dss_save_context(void);
 void dss_restore_context(void);
 void dss_clk_enable(enum dss_clock clks);