OMAPDSS: HDMI: Add op to get audio DMA port address offset

It could be possible that the DMA port differs accross diferent HDMI IPs. Thus,
add an IP-specific function to obtain the address offset and size of the DMA
data port.

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

3 files changed, 13 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index 3e8287c8709d..8dcecbca46a5 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -820,6 +820,7 @@ static const struct ti_hdmi_ip_ops omap4_hdmi_functions = {
         .audio_start            =       ti_hdmi_4xxx_audio_start,
         .audio_stop             =       ti_hdmi_4xxx_audio_stop,
         .audio_config           =       ti_hdmi_4xxx_audio_config,
+        .audio_get_dma_port     =       ti_hdmi_4xxx_audio_get_dma_port,
 #endif
 
 };
diff --git a/drivers/video/omap2/dss/ti_hdmi.h b/drivers/video/omap2/dss/ti_hdmi.h
index b046c208cb97..216aa704f9d7 100644
--- a/drivers/video/omap2/dss/ti_hdmi.h
+++ b/drivers/video/omap2/dss/ti_hdmi.h
@@ -102,6 +102,8 @@ struct ti_hdmi_ip_ops {
 
         int (*audio_config)(struct hdmi_ip_data *ip_data,
                 struct omap_dss_audio *audio);
+
+        int (*audio_get_dma_port)(u32 *offset, u32 *size);
 #endif
 
 };
@@ -183,5 +185,6 @@ int ti_hdmi_4xxx_audio_start(struct hdmi_ip_data *ip_data);
 void ti_hdmi_4xxx_audio_stop(struct hdmi_ip_data *ip_data);
 int ti_hdmi_4xxx_audio_config(struct hdmi_ip_data *ip_data,
                 struct omap_dss_audio *audio);
+int ti_hdmi_4xxx_audio_get_dma_port(u32 *offset, u32 *size);
 #endif
 #endif
diff --git a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c
index a6efff257aa2..e18b222ed739 100644
--- a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c
+++ b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c
@@ -1418,4 +1418,13 @@ void ti_hdmi_4xxx_audio_stop(struct hdmi_ip_data *ip_data)
         REG_FLD_MOD(hdmi_wp_base(ip_data),
                     HDMI_WP_AUDIO_CTRL, false, 30, 30);
 }
+
+int ti_hdmi_4xxx_audio_get_dma_port(u32 *offset, u32 *size)
+{
+        if (!offset || !size)
+                return -EINVAL;
+        *offset = HDMI_WP_AUDIO_DATA;
+        *size = 4;
+        return 0;
+}
 #endif