[Intel-gfx] [PATCH 3/4] drm/i915: Sprite C support for Gen4 and earlier

ville.syrjala at linux.intel.com ville.syrjala at linux.intel.com
Wed Apr 17 19:12:00 CEST 2013


From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Gen2-4 have a non-scalable sprite C, which can be assigned to either
pipe A or pipe B dynamically. Expose sprite C as a drm_plame.

I've tested this only on 85x (8086:3582) and 946 (8086:2972).

Gen2/3 chipsets should also be able to re-assign the primary plane B
to act as a sprite on pipe A. But in order to expose that, we should
actually expose all primary planes as drm_planes. We should make
that change eventually, but currently we're not yet ready for it. So
for now only sprite C is exposed, and sprite B can't be used yet.

Based on the gen2 docs, it seems that the sprite C support is usually
present only on mobile platforms. The exception is SPG-B, which I'm
assuming means i865g for our driver.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h      |  27 +++
 drivers/gpu/drm/i915/intel_display.c |  35 +++-
 drivers/gpu/drm/i915/intel_sprite.c  | 339 +++++++++++++++++++++++++++++++++--
 3 files changed, 381 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 31de7e4..7a0037d 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3085,15 +3085,24 @@
 #define   DISPPLANE_SRC_KEY_DISABLE		0
 #define   DISPPLANE_LINE_DOUBLE			(1<<20)
 #define   DISPPLANE_NO_LINE_DOUBLE		0
+#define   DISPPLANE_PLANE_CSC_DISABLE		(1<<19)
 #define   DISPPLANE_STEREO_POLARITY_FIRST	0
 #define   DISPPLANE_STEREO_POLARITY_SECOND	(1<<18)
+#define   DISPPLANE_YUV_BYTE_ORDER_MASK (3<<16)
+#define   DISPPLANE_YUV_ORDER_YUYV	(0<<16)
+#define   DISPPLANE_YUV_ORDER_UYVY	(1<<16)
+#define   DISPPLANE_YUV_ORDER_YVYU	(2<<16)
+#define   DISPPLANE_YUV_ORDER_VYUY	(3<<16)
 #define   DISPPLANE_TRICKLE_FEED_DISABLE	(1<<14) /* Ironlake */
 #define   DISPPLANE_TILED			(1<<10)
 #define _DSPAADDR		(dev_priv->info->display_mmio_offset + 0x70184)
 #define _DSPASTRIDE		(dev_priv->info->display_mmio_offset + 0x70188)
 #define _DSPAPOS		(dev_priv->info->display_mmio_offset + 0x7018C) /* reserved */
 #define _DSPASIZE		(dev_priv->info->display_mmio_offset + 0x70190)
+#define _DSPAKEYMINVAL		(dev_priv->info->display_mmio_offset + 0x70194)
+#define _DSPAKEYMSK		(dev_priv->info->display_mmio_offset + 0x70198)
 #define _DSPASURF		(dev_priv->info->display_mmio_offset + 0x7019C) /* 965+ only */
+#define _DSPAKEYMAXVAL		(dev_priv->info->display_mmio_offset + 0x701A0)
 #define _DSPATILEOFF		(dev_priv->info->display_mmio_offset + 0x701A4) /* 965+ only */
 #define _DSPAOFFSET		(dev_priv->info->display_mmio_offset + 0x701A4) /* HSW */
 #define _DSPASURFLIVE		(dev_priv->info->display_mmio_offset + 0x701AC)
@@ -3103,7 +3112,10 @@
 #define DSPSTRIDE(plane) _PIPE(plane, _DSPASTRIDE, _DSPBSTRIDE)
 #define DSPPOS(plane) _PIPE(plane, _DSPAPOS, _DSPBPOS)
 #define DSPSIZE(plane) _PIPE(plane, _DSPASIZE, _DSPBSIZE)
+#define DSPKEYMINVAL(plane) _PIPE(plane, _DSPAKEYMINVAL, _DSPBKEYMINVAL)
+#define DSPKEYMSK(plane) _PIPE(plane, _DSPAKEYMSK, _DSPBKEYMSK)
 #define DSPSURF(plane) _PIPE(plane, _DSPASURF, _DSPBSURF)
+#define DSPKEYMAXVAL(plane) _PIPE(plane, _DSPAKEYMAXVAL, _DSPBKEYMAXVAL)
 #define DSPTILEOFF(plane) _PIPE(plane, _DSPATILEOFF, _DSPBTILEOFF)
 #define DSPLINOFF(plane) DSPADDR(plane)
 #define DSPOFFSET(plane) _PIPE(plane, _DSPAOFFSET, _DSPBOFFSET)
@@ -3116,6 +3128,18 @@
 #define I915_MODIFY_DISPBASE(reg, gfx_addr) \
 		(I915_WRITE((reg), (gfx_addr) | I915_LO_DISPBASE(I915_READ(reg))))
 
+/* plane C color correction */
+#define DCLRC0			(dev_priv->info->display_mmio_offset + 0x721d0)
+#define DCLRC1			(dev_priv->info->display_mmio_offset + 0x721d4)
+
+/* plane C pre-blend gamma */
+#define GAMC5			(dev_priv->info->display_mmio_offset + 0x721e0)
+#define GAMC4			(dev_priv->info->display_mmio_offset + 0x721e4)
+#define GAMC3			(dev_priv->info->display_mmio_offset + 0x721e8)
+#define GAMC2			(dev_priv->info->display_mmio_offset + 0x721ec)
+#define GAMC1			(dev_priv->info->display_mmio_offset + 0x721f0)
+#define GAMC0			(dev_priv->info->display_mmio_offset + 0x721f4)
+
 /* VBIOS flags */
 #define SWF00			(dev_priv->info->display_mmio_offset + 0x71410)
 #define SWF01			(dev_priv->info->display_mmio_offset + 0x71414)
@@ -3151,9 +3175,12 @@
 #define _DSPBSTRIDE		(dev_priv->info->display_mmio_offset + 0x71188)
 #define _DSPBPOS		(dev_priv->info->display_mmio_offset + 0x7118C)
 #define _DSPBSIZE		(dev_priv->info->display_mmio_offset + 0x71190)
+#define _DSPBKEYMINVAL		(dev_priv->info->display_mmio_offset + 0x71194)
+#define _DSPBKEYMSK		(dev_priv->info->display_mmio_offset + 0x71198)
 #define _DSPBSURF		(dev_priv->info->display_mmio_offset + 0x7119C)
 #define _DSPBTILEOFF		(dev_priv->info->display_mmio_offset + 0x711A4)
 #define _DSPBOFFSET		(dev_priv->info->display_mmio_offset + 0x711A4)
+#define _DSPBKEYMAXVAL		(dev_priv->info->display_mmio_offset + 0x711A0)
 #define _DSPBSURFLIVE		(dev_priv->info->display_mmio_offset + 0x711AC)
 
 /* Sprite A control */
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4f4a8d1..4f3b490 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8706,7 +8706,8 @@ int intel_framebuffer_init(struct drm_device *dev,
 	case DRM_FORMAT_UYVY:
 	case DRM_FORMAT_YVYU:
 	case DRM_FORMAT_VYUY:
-		if (INTEL_INFO(dev)->gen < 5) {
+		/* YUV sprite C / video sprite support? */
+		if (INTEL_INFO(dev)->num_pipes == 1) {
 			DRM_DEBUG("invalid format: 0x%08x\n", mode_cmd->pixel_format);
 			return -EINVAL;
 		}
@@ -9054,6 +9055,10 @@ void intel_modeset_init(struct drm_device *dev)
 
 	for (i = 0; i < INTEL_INFO(dev)->num_pipes; i++) {
 		intel_crtc_init(dev, i);
+
+		if (INTEL_INFO(dev)->gen <= 4)
+			continue;
+
 		for (j = 0; j < dev_priv->num_plane; j++) {
 			ret = intel_plane_init(dev, i, j);
 			if (ret)
@@ -9062,6 +9067,34 @@ void intel_modeset_init(struct drm_device *dev)
 		}
 	}
 
+	/*
+	 * Sprite C:
+	 * the pipe we pass here doesn't matter since the
+	 * sprite->pipe assignment can be changed dynamically.
+	 */
+
+	/* one pipe and planes A+C */
+	if (IS_I865G(dev)) {
+		/*
+		 * Sprite C:
+		 * the pipe we pass here doesn't matter since the
+		 * sprite->pipe assignment can be changed dynamically.
+		 */
+		ret = intel_plane_init(dev, 0, PLANE_C);
+		if (ret)
+			DRM_DEBUG_KMS("plane %c init failed: %d\n",
+				      plane_name(PLANE_C), ret);
+	}
+
+	/* two pipes and planes A+B+C */
+	if (INTEL_INFO(dev)->gen <= 4 &&
+	    INTEL_INFO(dev)->num_pipes == 2) {
+		ret = intel_plane_init(dev, 0, PLANE_C);
+		if (ret)
+			DRM_DEBUG_KMS("plane %c init failed: %d\n",
+				      plane_name(PLANE_C), ret);
+	}
+
 	intel_cpu_pll_init(dev);
 	intel_pch_pll_init(dev);
 
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index c7d25c5..026e6b8 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -36,6 +36,239 @@
 #include <drm/i915_drm.h>
 #include "i915_drv.h"
 
+static bool format_is_yuv(uint32_t pixel_format)
+{
+	switch (pixel_format) {
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_YVYU:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static void
+gen2_update_plane(struct drm_plane *dplane, struct drm_framebuffer *fb,
+		  struct drm_i915_gem_object *obj, int crtc_x, int crtc_y,
+		  unsigned int crtc_w, unsigned int crtc_h,
+		  uint32_t x, uint32_t y,
+		  uint32_t src_w, uint32_t src_h)
+{
+	struct drm_device *dev = dplane->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_plane *intel_plane = to_intel_plane(dplane);
+	int pipe = intel_plane->pipe;
+	int plane = intel_plane->plane;
+	u32 dspcntr;
+	unsigned long dspsurf_offset, linear_offset;
+	int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+
+	dspcntr = I915_READ(DSPCNTR(plane));
+
+	dspcntr &= ~(DISPPLANE_GAMMA_ENABLE |
+		     DISPPLANE_PIXFORMAT_MASK |
+		     DISPPLANE_YUV_BYTE_ORDER_MASK |
+		     DISPPLANE_PLANE_CSC_DISABLE |
+		     DISPPLANE_SEL_PIPE_MASK |
+		     DISPPLANE_TILED);
+
+	switch (fb->pixel_format) {
+	case DRM_FORMAT_YUYV:
+		dspcntr |= DISPPLANE_YUV422 | DISPPLANE_YUV_ORDER_YUYV;
+		break;
+	case DRM_FORMAT_YVYU:
+		dspcntr |= DISPPLANE_YUV422 | DISPPLANE_YUV_ORDER_YVYU;
+		break;
+	case DRM_FORMAT_UYVY:
+		dspcntr |= DISPPLANE_YUV422 | DISPPLANE_YUV_ORDER_UYVY;
+		break;
+	case DRM_FORMAT_VYUY:
+		dspcntr |= DISPPLANE_YUV422 | DISPPLANE_YUV_ORDER_VYUY;
+		break;
+	case DRM_FORMAT_C8:
+		dspcntr |= DISPPLANE_8BPP | DISPPLANE_GAMMA_ENABLE;
+		break;
+	case DRM_FORMAT_ARGB1555:
+		dspcntr |= IS_GEN3(dev) ? DISPPLANE_BGRA555 : DISPPLANE_BGRX555;
+		break;
+	case DRM_FORMAT_XRGB1555:
+		dspcntr |= DISPPLANE_BGRX555;
+		break;
+	case DRM_FORMAT_RGB565:
+		dspcntr |= DISPPLANE_BGRX565;
+		break;
+	case DRM_FORMAT_XRGB8888:
+		dspcntr |= DISPPLANE_BGRX888;
+		break;
+	case DRM_FORMAT_ARGB8888:
+		dspcntr |= DISPPLANE_BGRA888;
+		break;
+	case DRM_FORMAT_XBGR2101010:
+		dspcntr |= DISPPLANE_RGBX101010;
+		break;
+	case DRM_FORMAT_ABGR2101010:
+		dspcntr |= DISPPLANE_RGBA101010;
+		break;
+	case DRM_FORMAT_XBGR8888:
+		dspcntr |= DISPPLANE_RGBX888;
+		break;
+	case DRM_FORMAT_ABGR8888:
+		dspcntr |= DISPPLANE_RGBA888;
+		break;
+	default:
+		/*
+		 * If we get here one of the upper layers failed to filter
+		 * out the unsupported plane formats
+		 */
+		BUG();
+		break;
+	}
+
+	if (pipe == PIPE_B)
+		dspcntr |= DISPPLANE_SEL_PIPE_B;
+
+	if (plane == PLANE_C && !IS_I865G(dev) &&
+	    !format_is_yuv(fb->pixel_format))
+		dspcntr |= DISPPLANE_PLANE_CSC_DISABLE;
+
+	if (INTEL_INFO(dev)->gen >= 4 &&
+	    obj->tiling_mode != I915_TILING_NONE)
+		dspcntr |= DISPPLANE_TILED;
+
+	dspcntr |= DISPLAY_PLANE_ENABLE;
+
+	/* Sizes are 0 based */
+	src_w--;
+	src_h--;
+	crtc_w--;
+	crtc_h--;
+
+	intel_update_sprite_watermarks(dev, plane, crtc_w, pixel_size);
+
+	/*
+	 * On gen2 DCLRC1 reset value is 0. Fix it, except on
+	 * i865g which supposedly doesn't support color correction.
+	 */
+	if (plane == PLANE_C && IS_GEN2(dev) && !IS_I865G(dev)) {
+		/* Pass-through for color correction */
+		I915_WRITE(DCLRC0, 1 << 24);
+		I915_WRITE(DCLRC1, 1 << 8);
+		/* Plane gamma should default to linear ramp */
+	}
+
+	I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
+	I915_WRITE(DSPPOS(plane), (crtc_y << 16) | crtc_x);
+	I915_WRITE(DSPSIZE(plane), (crtc_h << 16) | crtc_w);
+	I915_WRITE(DSPCNTR(plane), dspcntr);
+
+	linear_offset = y * fb->pitches[0] + x * pixel_size;
+
+	if (INTEL_INFO(dev)->gen >= 4) {
+		dspsurf_offset = intel_gen4_compute_page_offset(&x, &y,
+								obj->tiling_mode,
+								pixel_size,
+								fb->pitches[0]);
+		linear_offset -= dspsurf_offset;
+
+		I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
+		I915_WRITE(DSPLINOFF(plane), linear_offset);
+		I915_MODIFY_DISPBASE(DSPSURF(plane), obj->gtt_offset + dspsurf_offset);
+	} else {
+		I915_WRITE(DSPADDR(plane), obj->gtt_offset + linear_offset);
+	}
+
+	intel_flush_display_plane(dev_priv, plane);
+
+}
+
+static void
+gen2_disable_plane(struct drm_plane *dplane)
+{
+	struct drm_device *dev = dplane->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_plane *intel_plane = to_intel_plane(dplane);
+	int plane = intel_plane->plane;
+
+	I915_WRITE(DSPCNTR(plane), I915_READ(DSPCNTR(plane)) &
+		   ~DISPLAY_PLANE_ENABLE);
+	/* Activate double buffered register update */
+	intel_flush_display_plane(dev_priv, plane);
+}
+
+static int
+gen2_update_colorkey(struct drm_plane *dplane,
+		     struct drm_intel_sprite_colorkey *key)
+{
+	struct drm_device *dev = dplane->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_plane *intel_plane = to_intel_plane(dplane);
+	int plane = intel_plane->plane;
+	u32 dspcntr;
+
+	if (key->flags & I915_SET_COLORKEY_DESTINATION)
+		return -EINVAL;
+
+	I915_WRITE(DSPKEYMINVAL(plane), key->min_value);
+	I915_WRITE(DSPKEYMAXVAL(plane), key->max_value);
+	I915_WRITE(DSPKEYMSK(plane), key->channel_mask);
+
+	dspcntr = I915_READ(DSPCNTR(plane));
+	dspcntr &= ~DISPPLANE_SRC_KEY_ENABLE;
+	if (key->flags & I915_SET_COLORKEY_SOURCE)
+		dspcntr |= DISPPLANE_SRC_KEY_ENABLE;
+	I915_WRITE(DSPCNTR(plane), dspcntr);
+
+	intel_flush_display_plane(dev_priv, plane);
+
+	return 0;
+}
+
+static void
+gen2_get_colorkey(struct drm_plane *dplane,
+		  struct drm_intel_sprite_colorkey *key)
+{
+	struct drm_device *dev = dplane->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_plane *intel_plane = to_intel_plane(dplane);
+	int plane = intel_plane->plane;
+	u32 dspcntr;
+
+	key->min_value = I915_READ(DSPKEYMINVAL(plane));
+	key->max_value = I915_READ(DSPKEYMAXVAL(plane));
+	key->channel_mask = I915_READ(DSPKEYMSK(plane));
+
+	dspcntr = I915_READ(DSPCNTR(plane));
+	if (dspcntr & DISPPLANE_SRC_KEY_ENABLE)
+		key->flags = I915_SET_COLORKEY_SOURCE;
+	else
+		key->flags = I915_SET_COLORKEY_NONE;
+}
+
+static bool
+gen2_check_pipe_sel(struct drm_plane *dplane, int new_pipe)
+{
+	struct drm_device *dev = dplane->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_plane *intel_plane = to_intel_plane(dplane);
+	int plane = intel_plane->plane;
+	int old_pipe;
+	u32 dspcntr;
+
+	dspcntr = I915_READ(DSPCNTR(plane));
+
+	/* allow pipe changes only when the sprite is disabled */
+	if (!(dspcntr & DISPLAY_PLANE_ENABLE))
+		return true;
+
+	old_pipe = (dspcntr & DISPPLANE_SEL_PIPE_MASK) == DISPPLANE_SEL_PIPE_B;
+
+	return !WARN(old_pipe != new_pipe,
+		     "sprite %c pipe assertion failure (expected %c, current %c)",
+		     plane_name(plane), pipe_name(old_pipe), pipe_name(new_pipe));
+}
+
 static void
 vlv_update_plane(struct drm_plane *dplane, struct drm_framebuffer *fb,
 		 struct drm_i915_gem_object *obj, int crtc_x, int crtc_y,
@@ -596,7 +829,7 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 	struct intel_plane *intel_plane = to_intel_plane(plane);
 	struct intel_framebuffer *intel_fb;
 	struct drm_i915_gem_object *obj, *old_obj;
-	int pipe = intel_plane->pipe;
+	int pipe = intel_crtc->pipe; /* the new pipe */
 	enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
 								      pipe);
 	int ret = 0;
@@ -629,8 +862,13 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 		return -EINVAL;
 
 	/* Don't modify another pipe's plane */
-	if (intel_plane->pipe != intel_crtc->pipe)
-		return -EINVAL;
+	if (INTEL_INFO(dev)->gen <= 4) {
+		if (!gen2_check_pipe_sel(plane, pipe))
+			return -EINVAL;
+	} else {
+		if (intel_plane->pipe != pipe)
+			return -EINVAL;
+	}
 
 	/* Sprite planes can be linear or x-tiled surfaces */
 	switch (obj->tiling_mode) {
@@ -701,6 +939,8 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 
 	intel_plane->obj = obj;
 
+	intel_plane->pipe = pipe;
+
 	/*
 	 * Be sure to re-enable the primary before the sprite is no longer
 	 * covering it fully.
@@ -724,7 +964,7 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 		 */
 		if (old_obj != obj) {
 			mutex_unlock(&dev->struct_mutex);
-			intel_wait_for_vblank(dev, to_intel_crtc(crtc)->pipe);
+			intel_wait_for_vblank(dev, pipe);
 			mutex_lock(&dev->struct_mutex);
 		}
 		intel_unpin_fb_obj(old_obj);
@@ -851,6 +1091,43 @@ static const struct drm_plane_funcs intel_plane_funcs = {
 	.destroy = intel_destroy_plane,
 };
 
+static uint32_t i865g_plane_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_XRGB1555,
+	DRM_FORMAT_ARGB1555,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ARGB8888,
+};
+
+static uint32_t gen2_plane_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_XRGB1555,
+	DRM_FORMAT_ARGB1555,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+};
+
+static uint32_t gen4_plane_formats[] = {
+	DRM_FORMAT_C8,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_ABGR2101010,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+};
+
 static uint32_t ilk_plane_formats[] = {
 	DRM_FORMAT_XRGB8888,
 	DRM_FORMAT_YUYV,
@@ -891,29 +1168,50 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
 	int num_plane_formats;
 	int ret;
 
-	if (INTEL_INFO(dev)->gen < 5)
-		return -ENODEV;
-
 	intel_plane = kzalloc(sizeof(struct intel_plane), GFP_KERNEL);
 	if (!intel_plane)
 		return -ENOMEM;
 
 	switch (INTEL_INFO(dev)->gen) {
+	case 2:
+	case 3:
+	case 4:
 	case 5:
 	case 6:
-		intel_plane->can_scale = true;
-		intel_plane->max_downscale = 16;
-		intel_plane->update_plane = ilk_update_plane;
-		intel_plane->disable_plane = ilk_disable_plane;
-		intel_plane->update_colorkey = ilk_update_colorkey;
-		intel_plane->get_colorkey = ilk_get_colorkey;
+		if (INTEL_INFO(dev)->gen <= 4) {
+			intel_plane->can_scale = false;
+			intel_plane->max_downscale = 1;
 
-		if (IS_GEN6(dev)) {
-			plane_formats = snb_plane_formats;
-			num_plane_formats = ARRAY_SIZE(snb_plane_formats);
+			intel_plane->update_plane = gen2_update_plane;
+			intel_plane->disable_plane = gen2_disable_plane;
+			intel_plane->update_colorkey = gen2_update_colorkey;
+			intel_plane->get_colorkey = gen2_get_colorkey;
+
+			if (IS_I865G(dev)) {
+				plane_formats = i865g_plane_formats;
+				num_plane_formats = ARRAY_SIZE(i865g_plane_formats);
+			} else if (INTEL_INFO(dev)->gen <= 3) {
+				plane_formats = gen2_plane_formats;
+				num_plane_formats = ARRAY_SIZE(gen2_plane_formats);
+			} else {
+				plane_formats = gen4_plane_formats;
+				num_plane_formats = ARRAY_SIZE(gen4_plane_formats);
+			}
 		} else {
-			plane_formats = ilk_plane_formats;
-			num_plane_formats = ARRAY_SIZE(ilk_plane_formats);
+			intel_plane->can_scale = true;
+			intel_plane->max_downscale = 16;
+			intel_plane->update_plane = ilk_update_plane;
+			intel_plane->disable_plane = ilk_disable_plane;
+			intel_plane->update_colorkey = ilk_update_colorkey;
+			intel_plane->get_colorkey = ilk_get_colorkey;
+
+			if (IS_GEN6(dev)) {
+				plane_formats = snb_plane_formats;
+				num_plane_formats = ARRAY_SIZE(snb_plane_formats);
+			} else {
+				plane_formats = ilk_plane_formats;
+				num_plane_formats = ARRAY_SIZE(ilk_plane_formats);
+			}
 		}
 		break;
 
@@ -951,7 +1249,10 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
 
 	intel_plane->pipe = pipe;
 	intel_plane->plane = plane;
-	possible_crtcs = (1 << pipe);
+	if (INTEL_INFO(dev)->gen >= 5)
+		possible_crtcs = 1 << pipe;
+	else
+		possible_crtcs = (1 << INTEL_INFO(dev)->num_pipes) - 1;
 	ret = drm_plane_init(dev, &intel_plane->base, possible_crtcs,
 			     &intel_plane_funcs,
 			     plane_formats, num_plane_formats,
-- 
1.8.1.5




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