OMAPDSS: Add DSS feature for HDMI MCLK for audio

Certain OMAP4 revisions (i.e., 4430 ES2.3, 4460, and 4470) use
a pseudo clock (generated from the TMDS clock), MCLK, to drive the
generation of Audio Clock Regeneration packets. Other devices
(i.e., 4430 ES2.[0,2]) use the TMDS clock directly.

This patch adds a new DSS feature for MCLK support. It also rearranges
the omap_dss_features structures to reflect the devices supporting it.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

2 files changed, 42 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index 656cb69f4640..0a926432ccdc 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -400,6 +400,23 @@ static const enum dss_feat_id omap4430_es1_0_dss_feat_list[] = {
         FEAT_FIFO_MERGE,
 };
 
+static const enum dss_feat_id omap4430_es2_0_1_2_dss_feat_list[] = {
+        FEAT_MGR_LCD2,
+        FEAT_CORE_CLK_DIV,
+        FEAT_LCD_CLK_SRC,
+        FEAT_DSI_DCS_CMD_CONFIG_VC,
+        FEAT_DSI_VC_OCP_WIDTH,
+        FEAT_DSI_GNQ,
+        FEAT_HDMI_CTS_SWMODE,
+        FEAT_HANDLE_UV_SEPARATE,
+        FEAT_ATTR2,
+        FEAT_CPR,
+        FEAT_PRELOAD,
+        FEAT_FIR_COEF_V,
+        FEAT_ALPHA_FREE_ZORDER,
+        FEAT_FIFO_MERGE,
+};
+
 static const enum dss_feat_id omap4_dss_feat_list[] = {
         FEAT_MGR_LCD2,
         FEAT_CORE_CLK_DIV,
@@ -408,6 +425,7 @@ static const enum dss_feat_id omap4_dss_feat_list[] = {
         FEAT_DSI_VC_OCP_WIDTH,
         FEAT_DSI_GNQ,
         FEAT_HDMI_CTS_SWMODE,
+        FEAT_HDMI_AUDIO_USE_MCLK,
         FEAT_HANDLE_UV_SEPARATE,
         FEAT_ATTR2,
         FEAT_CPR,
@@ -493,6 +511,25 @@ static const struct omap_dss_features omap4430_es1_0_dss_features  = {
         .burst_size_unit = 16,
 };
 
+/* For OMAP4430 ES 2.0, 2.1 and 2.2 revisions */
+static const struct omap_dss_features omap4430_es2_0_1_2_dss_features = {
+        .reg_fields = omap4_dss_reg_fields,
+        .num_reg_fields = ARRAY_SIZE(omap4_dss_reg_fields),
+
+        .features = omap4430_es2_0_1_2_dss_feat_list,
+        .num_features = ARRAY_SIZE(omap4430_es2_0_1_2_dss_feat_list),
+
+        .num_mgrs = 3,
+        .num_ovls = 4,
+        .supported_displays = omap4_dss_supported_displays,
+        .supported_color_modes = omap4_dss_supported_color_modes,
+        .overlay_caps = omap4_dss_overlay_caps,
+        .clksrc_names = omap4_dss_clk_source_names,
+        .dss_params = omap4_dss_param_range,
+        .buffer_size_unit = 16,
+        .burst_size_unit = 16,
+};
+
 /* For all the other OMAP4 versions */
 static const struct omap_dss_features omap4_dss_features = {
         .reg_fields = omap4_dss_reg_fields,
@@ -634,6 +671,10 @@ void dss_features_init(void)
                 omap_current_dss_features = &omap3430_dss_features;
         else if (omap_rev() == OMAP4430_REV_ES1_0)
                 omap_current_dss_features = &omap4430_es1_0_dss_features;
+        else if (omap_rev() == OMAP4430_REV_ES2_0 ||
+                omap_rev() == OMAP4430_REV_ES2_1 ||
+                omap_rev() == OMAP4430_REV_ES2_2)
+                omap_current_dss_features = &omap4430_es2_0_1_2_dss_features;
         else if (cpu_is_omap44xx())
                 omap_current_dss_features = &omap4_dss_features;
         else
diff --git a/drivers/video/omap2/dss/dss_features.h b/drivers/video/omap2/dss/dss_features.h
index 682f091cf02e..c332e7ddfce1 100644
--- a/drivers/video/omap2/dss/dss_features.h
+++ b/drivers/video/omap2/dss/dss_features.h
@@ -50,6 +50,7 @@ enum dss_feat_id {
         FEAT_DSI_REVERSE_TXCLKESC,
         FEAT_DSI_GNQ,
         FEAT_HDMI_CTS_SWMODE,
+        FEAT_HDMI_AUDIO_USE_MCLK,
         FEAT_HANDLE_UV_SEPARATE,
         FEAT_ATTR2,
         FEAT_VENC_REQUIRES_TV_DAC_CLK,