drm/exynos: enable dvi mode for dvi monitor
Hdmi monitor and dvi monitor can be distinguished with edid.
This patch enables dvi mode if dvi monitor is connected and does
not enable audio feature for dvi mode because dvi has no audio
feature.
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index ad53c48..5ca0a9f 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -60,6 +60,7 @@
bool hpd;
bool powered;
bool is_v13;
+ bool dvi_mode;
struct mutex hdmi_mutex;
struct resource *regs_res;
@@ -1211,10 +1212,12 @@
raw_edid = drm_get_edid(connector, hdata->ddc_port->adapter);
if (raw_edid) {
+ hdata->dvi_mode = !drm_detect_hdmi_monitor(raw_edid);
memcpy(edid, raw_edid, min((1 + raw_edid->extensions)
* EDID_LENGTH, len));
- DRM_DEBUG_KMS("width[%d] x height[%d]\n",
- raw_edid->width_cm, raw_edid->height_cm);
+ DRM_DEBUG_KMS("%s : width[%d] x height[%d]\n",
+ (hdata->dvi_mode ? "dvi monitor" : "hdmi monitor"),
+ raw_edid->width_cm, raw_edid->height_cm);
} else {
return -ENODEV;
}
@@ -1437,10 +1440,7 @@
static void hdmi_audio_control(struct hdmi_context *hdata, bool onoff)
{
- u32 mod;
-
- mod = hdmi_reg_read(hdata, HDMI_MODE_SEL);
- if (mod & HDMI_DVI_MODE_EN)
+ if (hdata->dvi_mode)
return;
hdmi_reg_writeb(hdata, HDMI_AUI_CON, onoff ? 2 : 0);
@@ -1479,6 +1479,14 @@
/* disable bluescreen */
hdmi_reg_writemask(hdata, HDMI_CON_0, 0, HDMI_BLUE_SCR_EN);
+ if (hdata->dvi_mode) {
+ /* choose DVI mode */
+ hdmi_reg_writemask(hdata, HDMI_MODE_SEL,
+ HDMI_MODE_DVI_EN, HDMI_MODE_MASK);
+ hdmi_reg_writeb(hdata, HDMI_CON_2,
+ HDMI_VID_PREAMBLE_DIS | HDMI_GUARD_BAND_DIS);
+ }
+
if (hdata->is_v13) {
/* choose bluescreen (fecal) color */
hdmi_reg_writeb(hdata, HDMI_V13_BLUE_SCREEN_0, 0x12);
diff --git a/drivers/gpu/drm/exynos/regs-hdmi.h b/drivers/gpu/drm/exynos/regs-hdmi.h
index 3c04bea..9cc7c5e 100644
--- a/drivers/gpu/drm/exynos/regs-hdmi.h
+++ b/drivers/gpu/drm/exynos/regs-hdmi.h
@@ -138,14 +138,16 @@
#define HDMI_ASP_MASK (1 << 2)
#define HDMI_EN (1 << 0)
+/* HDMI_CON_2 */
+#define HDMI_VID_PREAMBLE_DIS (1 << 5)
+#define HDMI_GUARD_BAND_DIS (1 << 1)
+
/* HDMI_PHY_STATUS */
#define HDMI_PHY_STATUS_READY (1 << 0)
/* HDMI_MODE_SEL */
#define HDMI_MODE_HDMI_EN (1 << 1)
#define HDMI_MODE_DVI_EN (1 << 0)
-#define HDMI_DVI_MODE_EN (1)
-#define HDMI_DVI_MODE_DIS (0)
#define HDMI_MODE_MASK (3 << 0)
/* HDMI_TG_CMD */