OMAP4: DSS2: HDMI: Function pointer approach to call

HDMI IP fundamentally has replaceable core PHY and PLL blocks.
These blocks might vary across OMAP's but the end functionality such as to
enable or disable PLL, PHY, function to read EDID would remain the same.

Thus to make the current hdmi DSS driver compatible with different OMAP's having
different IP blocks( A combination of different core, PHY, PLL blocks), function
pointer approach is introduced.

With function pointer, relevant IP dependent functions are mapped to the generic
functions used by DSS during the initialization based on the OMAP compiled.
Thus making hdmi DSS driver IP agnostic.

Signed-off-by: Mythri P K <mythripk@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index b63c5f8d9151..86706123a247 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -429,6 +429,26 @@ static const struct omap_dss_features omap4_dss_features = {
         .burst_size_unit = 16,
 };
 
+#if defined(CONFIG_OMAP4_DSS_HDMI)
+/* HDMI OMAP4 Functions*/
+static const struct ti_hdmi_ip_ops omap4_hdmi_functions = {
+
+        .video_configure        =       ti_hdmi_4xxx_basic_configure,
+        .phy_enable             =       ti_hdmi_4xxx_phy_enable,
+        .phy_disable            =       ti_hdmi_4xxx_phy_disable,
+        .read_edid              =       ti_hdmi_4xxx_read_edid,
+        .pll_enable             =       ti_hdmi_4xxx_pll_enable,
+        .pll_disable            =       ti_hdmi_4xxx_pll_disable,
+        .video_enable           =       ti_hdmi_4xxx_wp_video_start,
+};
+
+void dss_init_hdmi_ip_ops(struct hdmi_ip_data *ip_data)
+{
+        if (cpu_is_omap44xx())
+                ip_data->ops = &omap4_hdmi_functions;
+}
+#endif
+
 /* Functions returning values related to a DSS feature */
 int dss_feat_get_num_mgrs(void)
 {