drm/i915: Add support for integrated HDMI on G4X hardware.

This is ported directly from the userland 2D driver code. The HDMI audio bits aren't hooked up yet. Signed-off-by: Eric Anholt <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
chewitt · Jan 7, 2009 · 7d57382 · 7d57382
1 parent 3f8bc37
commit 7d57382
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Showing 7 changed files with 322 additions and 7 deletions.
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
@@ -13,6 +13,7 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o \
 	  intel_crt.o \
 	  intel_lvds.o \
 	  intel_bios.o \
+	  intel_hdmi.o \
 	  intel_sdvo.o \
 	  intel_modes.o \
 	  intel_i2c.o \

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
@@ -664,6 +664,7 @@ extern void intel_modeset_cleanup(struct drm_device *dev);
 				 writel(upper_32_bits(val), dev_priv->regs + \
 					(reg) + 4))
 #endif
+#define POSTING_READ(reg)	(void)I915_READ(reg)
 
 #define I915_VERBOSE 0
 
@@ -760,6 +761,7 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
 			IS_I945GM(dev) || IS_I965GM(dev) || IS_GM45(dev))
 
 #define I915_NEED_GFX_HWS(dev) (IS_G33(dev) || IS_GM45(dev) || IS_G4X(dev))
+#define SUPPORTS_INTEGRATED_HDMI(dev)	(IS_G4X(dev))
 
 #define PRIMARY_RINGBUFFER_SIZE         (128*1024)
 

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
@@ -549,6 +549,8 @@
 /** GM965 GM45 render standby register */
 #define MCHBAR_RENDER_STANDBY	0x111B8
 
+#define PEG_BAND_GAP_DATA	0x14d68
+
 /*
  * Overlay regs
  */
@@ -612,13 +614,19 @@
 
 /* Hotplug control (945+ only) */
 #define PORT_HOTPLUG_EN		0x61110
+#define   HDMIB_HOTPLUG_INT_EN			(1 << 29)
+#define   HDMIC_HOTPLUG_INT_EN			(1 << 28)
+#define   HDMID_HOTPLUG_INT_EN			(1 << 27)
 #define   SDVOB_HOTPLUG_INT_EN			(1 << 26)
 #define   SDVOC_HOTPLUG_INT_EN			(1 << 25)
 #define   TV_HOTPLUG_INT_EN			(1 << 18)
 #define   CRT_HOTPLUG_INT_EN			(1 << 9)
 #define   CRT_HOTPLUG_FORCE_DETECT		(1 << 3)
 
 #define PORT_HOTPLUG_STAT	0x61114
+#define   HDMIB_HOTPLUG_INT_STATUS		(1 << 29)
+#define   HDMIC_HOTPLUG_INT_STATUS		(1 << 28)
+#define   HDMID_HOTPLUG_INT_STATUS		(1 << 27)
 #define   CRT_HOTPLUG_INT_STATUS		(1 << 11)
 #define   TV_HOTPLUG_INT_STATUS			(1 << 10)
 #define   CRT_HOTPLUG_MONITOR_MASK		(3 << 8)
@@ -648,7 +656,16 @@
 #define   SDVO_PHASE_SELECT_DEFAULT	(6 << 19)
 #define   SDVO_CLOCK_OUTPUT_INVERT	(1 << 18)
 #define   SDVOC_GANG_MODE		(1 << 16)
+#define   SDVO_ENCODING_SDVO		(0x0 << 10)
+#define   SDVO_ENCODING_HDMI		(0x2 << 10)
+/** Requird for HDMI operation */
+#define   SDVO_NULL_PACKETS_DURING_VSYNC (1 << 9)
 #define   SDVO_BORDER_ENABLE		(1 << 7)
+#define   SDVO_AUDIO_ENABLE		(1 << 6)
+/** New with 965, default is to be set */
+#define   SDVO_VSYNC_ACTIVE_HIGH	(1 << 4)
+/** New with 965, default is to be set */
+#define   SDVO_HSYNC_ACTIVE_HIGH	(1 << 3)
 #define   SDVOB_PCIE_CONCURRENCY	(1 << 3)
 #define   SDVO_DETECTED			(1 << 2)
 /* Bits to be preserved when writing */

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
@@ -751,6 +751,7 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
 			is_lvds = true;
 			break;
 		case INTEL_OUTPUT_SDVO:
+		case INTEL_OUTPUT_HDMI:
 			is_sdvo = true;
 			break;
 		case INTEL_OUTPUT_DVO:
@@ -1443,8 +1444,15 @@ static void intel_setup_outputs(struct drm_device *dev)
 		intel_lvds_init(dev);
 
 	if (IS_I9XX(dev)) {
-		intel_sdvo_init(dev, SDVOB);
-		intel_sdvo_init(dev, SDVOC);
+		int found;
+
+		found = intel_sdvo_init(dev, SDVOB);
+		if (!found && SUPPORTS_INTEGRATED_HDMI(dev))
+			intel_hdmi_init(dev, SDVOB);
+
+		found = intel_sdvo_init(dev, SDVOC);
+		if (!found && SUPPORTS_INTEGRATED_HDMI(dev))
+			intel_hdmi_init(dev, SDVOC);
 	} else
 		intel_dvo_init(dev);
 
@@ -1458,6 +1466,11 @@ static void intel_setup_outputs(struct drm_device *dev)
 
 		/* valid crtcs */
 		switch(intel_output->type) {
+		case INTEL_OUTPUT_HDMI:
+			crtc_mask = ((1 << 0)|
+				     (1 << 1));
+			clone_mask = ((1 << INTEL_OUTPUT_HDMI));
+			break;
 		case INTEL_OUTPUT_DVO:
 		case INTEL_OUTPUT_SDVO:
 			crtc_mask = ((1 << 0)|

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
@@ -53,6 +53,7 @@
 #define INTEL_OUTPUT_SDVO 3
 #define INTEL_OUTPUT_LVDS 4
 #define INTEL_OUTPUT_TVOUT 5
+#define INTEL_OUTPUT_HDMI 6
 
 #define INTEL_DVO_CHIP_NONE 0
 #define INTEL_DVO_CHIP_LVDS 1
@@ -109,7 +110,8 @@ int intel_ddc_get_modes(struct intel_output *intel_output);
 extern bool intel_ddc_probe(struct intel_output *intel_output);
 
 extern void intel_crt_init(struct drm_device *dev);
-extern void intel_sdvo_init(struct drm_device *dev, int output_device);
+extern void intel_hdmi_init(struct drm_device *dev, int sdvox_reg);
+extern bool intel_sdvo_init(struct drm_device *dev, int output_device);
 extern void intel_dvo_init(struct drm_device *dev);
 extern void intel_tv_init(struct drm_device *dev);
 extern void intel_lvds_init(struct drm_device *dev);