drm/radeon: Update pitch for page flip

When primary bo is updated, crtc's pitch may
have not been updated, this will lead to show
disorder content when user changes display mode,
we update crtc's pitch in page flip to avoid
this bug.
This refers to amdgpu's pageflip.

v1->v2:
Update all of the pitch in all of the page_flip functions
in radeon rather than just the evergreen one.

v2->v3:
Update pitch set method for r100 according to
radeon_legacy_crtc.c

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Zhenneng Li <lizhenneng@kylinos.cn>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/evergreen.c

@@ -28,6 +28,7 @@
 
 #include <drm/drm_vblank.h>
 #include <drm/radeon_drm.h>
+#include <drm/drm_fourcc.h>
 
 #include "atom.h"
 #include "avivod.h"
@@ -1414,10 +1415,15 @@ void evergreen_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base,
 			 bool async)
 {
 	struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
+	struct drm_framebuffer *fb = radeon_crtc->base.primary->fb;
 
-	/* update the scanout addresses */
+	/* flip at hsync for async, default is vsync */
 	WREG32(EVERGREEN_GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset,
 	       async ? EVERGREEN_GRPH_SURFACE_UPDATE_H_RETRACE_EN : 0);
+	/* update pitch */
+	WREG32(EVERGREEN_GRPH_PITCH + radeon_crtc->crtc_offset,
+	       fb->pitches[0] / fb->format->cpp[0]);
+	/* update the scanout addresses */
 	WREG32(EVERGREEN_GRPH_PRIMARY_SURFACE_ADDRESS_HIGH + radeon_crtc->crtc_offset,
 	       upper_32_bits(crtc_base));
 	WREG32(EVERGREEN_GRPH_PRIMARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,

drivers/gpu/drm/radeon/r100.c

@@ -162,6 +162,8 @@ void r100_wait_for_vblank(struct radeon_device *rdev, int crtc)
 void r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base, bool async)
 {
 	struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
+	uint32_t crtc_pitch, pitch_pixels;
+	struct drm_framebuffer *fb = radeon_crtc->base.primary->fb;
 	u32 tmp = ((u32)crtc_base) | RADEON_CRTC_OFFSET__OFFSET_LOCK;
 	int i;
 
@@ -169,6 +171,13 @@ void r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base, bool
 	/* update the scanout addresses */
 	WREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset, tmp);
 
+	/* update pitch */
+	pitch_pixels = fb->pitches[0] / fb->format->cpp[0];
+	crtc_pitch = DIV_ROUND_UP(pitch_pixels * fb->format->cpp[0] * 8,
+				  fb->format->cpp[0] * 8 * 8);
+	crtc_pitch |= crtc_pitch << 16;
+	WREG32(RADEON_CRTC_PITCH + radeon_crtc->crtc_offset, crtc_pitch);
+
 	/* Wait for update_pending to go high. */
 	for (i = 0; i < rdev->usec_timeout; i++) {
 		if (RREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset) & RADEON_CRTC_OFFSET__GUI_TRIG_OFFSET)

drivers/gpu/drm/radeon/rs600.c

@@ -41,6 +41,7 @@
 
 #include <drm/drm_device.h>
 #include <drm/drm_vblank.h>
+#include <drm/drm_fourcc.h>
 
 #include "atom.h"
 #include "radeon.h"
@@ -118,6 +119,7 @@ void avivo_wait_for_vblank(struct radeon_device *rdev, int crtc)
 void rs600_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base, bool async)
 {
 	struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
+	struct drm_framebuffer *fb = radeon_crtc->base.primary->fb;
 	u32 tmp = RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset);
 	int i;
 
@@ -125,9 +127,13 @@ void rs600_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base, boo
 	tmp |= AVIVO_D1GRPH_UPDATE_LOCK;
 	WREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset, tmp);
 
-	/* update the scanout addresses */
+	/* flip at hsync for async, default is vsync */
 	WREG32(AVIVO_D1GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset,
 	       async ? AVIVO_D1GRPH_SURFACE_UPDATE_H_RETRACE_EN : 0);
+	/* update pitch */
+	WREG32(AVIVO_D1GRPH_PITCH + radeon_crtc->crtc_offset,
+	       fb->pitches[0] / fb->format->cpp[0]);
+	/* update the scanout addresses */
 	WREG32(AVIVO_D1GRPH_SECONDARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
 	       (u32)crtc_base);
 	WREG32(AVIVO_D1GRPH_PRIMARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,

drivers/gpu/drm/radeon/rv770.c

@@ -32,6 +32,7 @@
 
 #include <drm/drm_device.h>
 #include <drm/radeon_drm.h>
+#include <drm/drm_fourcc.h>
 
 #include "atom.h"
 #include "avivod.h"
@@ -809,6 +810,7 @@ u32 rv770_get_xclk(struct radeon_device *rdev)
 void rv770_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base, bool async)
 {
 	struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
+	struct drm_framebuffer *fb = radeon_crtc->base.primary->fb;
 	u32 tmp = RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset);
 	int i;
 
@@ -816,9 +818,13 @@ void rv770_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base, boo
 	tmp |= AVIVO_D1GRPH_UPDATE_LOCK;
 	WREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset, tmp);
 
-	/* update the scanout addresses */
+	/* flip at hsync for async, default is vsync */
 	WREG32(AVIVO_D1GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset,
 	       async ? AVIVO_D1GRPH_SURFACE_UPDATE_H_RETRACE_EN : 0);
+	/* update pitch */
+	WREG32(AVIVO_D1GRPH_PITCH + radeon_crtc->crtc_offset,
+	       fb->pitches[0] / fb->format->cpp[0]);
+	/* update the scanout addresses */
 	if (radeon_crtc->crtc_id) {
 		WREG32(D2GRPH_SECONDARY_SURFACE_ADDRESS_HIGH, upper_32_bits(crtc_base));
 		WREG32(D2GRPH_PRIMARY_SURFACE_ADDRESS_HIGH, upper_32_bits(crtc_base));