[PATCH 07/11] drm/i915: Add 180 degree sprite rotation support

sonika.jindal
2014-06-18T09:01:09Z

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

The sprite planes (in fact all display planes starting from gen4)
support 180 degree rotation. Add the relevant low level bits to the
sprite code to make use of that feature.

The upper layers are not yet plugged in.

v2: HSW handles the rotated buffer offset automagically

v3: BDW also handles the rotated buffer offset automagically

Testcase: igt/kms_rotation_crc

Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: David Airlie <airlied at linux.ie>
Cc: dri-devel at lists.freedesktop.org
Cc: linux-kernel at vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Sagar Kamble <sagar.a.kamble at intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 3 +++
drivers/gpu/drm/i915/intel_drv.h | 1 +
drivers/gpu/drm/i915/intel_sprite.c | 37 +++++++++++++++++++++++++++++++++++
3 files changed, 41 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 3488567..c70c804 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4171,6 +4171,7 @@ enum punit_power_well {
#define DVS_YUV_ORDER_UYVY (1<<16)
#define DVS_YUV_ORDER_YVYU (2<<16)
#define DVS_YUV_ORDER_VYUY (3<<16)
+#define DVS_ROTATE_180 (1<<15)
#define DVS_DEST_KEY (1<<2)
#define DVS_TRICKLE_FEED_DISABLE (1<<14)
#define DVS_TILED (1<<10)
@@ -4241,6 +4242,7 @@ enum punit_power_well {
#define SPRITE_YUV_ORDER_UYVY (1<<16)
#define SPRITE_YUV_ORDER_YVYU (2<<16)
#define SPRITE_YUV_ORDER_VYUY (3<<16)
+#define SPRITE_ROTATE_180 (1<<15)
#define SPRITE_TRICKLE_FEED_DISABLE (1<<14)
#define SPRITE_INT_GAMMA_ENABLE (1<<13)
#define SPRITE_TILED (1<<10)
@@ -4314,6 +4316,7 @@ enum punit_power_well {
#define SP_YUV_ORDER_UYVY (1<<16)
#define SP_YUV_ORDER_YVYU (2<<16)
#define SP_YUV_ORDER_VYUY (3<<16)
+#define SP_ROTATE_180 (1<<15)
#define SP_TILED (1<<10)
#define _SPALINOFF (VLV_DISPLAY_BASE + 0x72184)
#define _SPASTRIDE (VLV_DISPLAY_BASE + 0x72188)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index ab5962b..67b1c59 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -437,6 +437,7 @@ struct intel_plane {
unsigned int crtc_w, crtc_h;
uint32_t src_x, src_y;
uint32_t src_w, src_h;
+ unsigned int rotation;

/* Since we need to change the watermarks before/after
* enabling/disabling the planes, we need to store the parameters here
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 404335d..54d4224 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -163,6 +163,7 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
sprctl &= ~SP_PIXFORMAT_MASK;
sprctl &= ~SP_YUV_BYTE_ORDER_MASK;
sprctl &= ~SP_TILED;
+ sprctl &= ~SP_ROTATE_180;

switch (fb->pixel_format) {
case DRM_FORMAT_YUYV:
@@ -234,6 +235,14 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
fb->pitches[0]);
linear_offset -= sprsurf_offset;

+ if (intel_plane->rotation == BIT(DRM_ROTATE_180)) {
+ sprctl |= SP_ROTATE_180;
+
+ x += src_w;
+ y += src_h;
+ linear_offset += src_h * fb->pitches[0] + src_w * pixel_size;
+ }
+
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);

intel_update_primary_plane(intel_crtc);
@@ -363,6 +372,7 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
sprctl &= ~SPRITE_RGB_ORDER_RGBX;
sprctl &= ~SPRITE_YUV_BYTE_ORDER_MASK;
sprctl &= ~SPRITE_TILED;
+ sprctl &= ~SPRITE_ROTATE_180;

switch (fb->pixel_format) {
case DRM_FORMAT_XBGR8888:
@@ -424,6 +434,17 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
pixel_size, fb->pitches[0]);
linear_offset -= sprsurf_offset;

+ if (intel_plane->rotation == BIT(DRM_ROTATE_180)) {
+ sprctl |= SPRITE_ROTATE_180;
+
+ /* HSW and BDW does this automagically in hardware */
+ if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
+ x += src_w;
+ y += src_h;
+ linear_offset += src_h * fb->pitches[0] + src_w * pixel_size;
+ }
+ }
+
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);

intel_update_primary_plane(intel_crtc);
@@ -569,6 +590,7 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
dvscntr &= ~DVS_RGB_ORDER_XBGR;
dvscntr &= ~DVS_YUV_BYTE_ORDER_MASK;
dvscntr &= ~DVS_TILED;
+ dvscntr &= ~DVS_ROTATE_180;

switch (fb->pixel_format) {
case DRM_FORMAT_XBGR8888:
@@ -625,6 +647,14 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
pixel_size, fb->pitches[0]);
linear_offset -= dvssurf_offset;

+ if (intel_plane->rotation == BIT(DRM_ROTATE_180)) {
+ dvscntr |= DVS_ROTATE_180;
+
+ x += src_w;
+ y += src_h;
+ linear_offset += src_h * fb->pitches[0] + src_w * pixel_size;
+ }
+
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);

intel_update_primary_plane(intel_crtc);
@@ -883,6 +913,9 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
max_scale = intel_plane->max_downscale << 16;
min_scale = intel_plane->can_scale ? 1 : (1 << 16);

+ drm_rect_rotate(&src, fb->width << 16, fb->height << 16,
+ intel_plane->rotation);
+
hscale = drm_rect_calc_hscale_relaxed(&src, &dst, min_scale, max_scale);
BUG_ON(hscale < 0);

@@ -921,6 +954,9 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
drm_rect_width(&dst) * hscale - drm_rect_width(&src),
drm_rect_height(&dst) * vscale - drm_rect_height(&src));

+ drm_rect_rotate_inv(&src, fb->width << 16, fb->height << 16,
+ intel_plane->rotation);
+
/* sanity check to make sure the src viewport wasn't enlarged */
WARN_ON(src.x1 < (int) src_x ||
src.y1 < (int) src_y ||
@@ -1296,6 +1332,7 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)

intel_plane->pipe = pipe;
intel_plane->plane = plane;
+ intel_plane->rotation = BIT(DRM_ROTATE_0);
possible_crtcs = (1 << pipe);
ret = drm_plane_init(dev, &intel_plane->base, possible_crtcs,
&intel_plane_funcs,
--
1.7.10.4

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org