[PATCH v2 3/7] drm/i915: Redo intel_tile_height() as intel_tile_size() / intel_tile_width()

ville.syrjala
2016-01-12T19:09:09Z

I find more usual to think about tile widths than heights, so changing
the intel_tile_height() to calculate the tile height as
tile_size/tile_width is easier than the opposite to the poor brain.

v2: Reorder arguments for consistency
Constify dev_priv arguments

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/i915/intel_display.c | 89 ++++++++++++------------------------
drivers/gpu/drm/i915/intel_drv.h | 5 +-
drivers/gpu/drm/i915/intel_sprite.c | 5 +-
3 files changed, 34 insertions(+), 65 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3a6387092f63..e2c7ae90b39d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2223,6 +2223,11 @@ static bool need_vtd_wa(struct drm_device *dev)
return false;
}

+static unsigned int intel_tile_size(const struct drm_i915_private *dev_priv)
+{
+ return IS_GEN2(dev_priv) ? 2048 : 4096;
+}
+
static unsigned int intel_tile_width(const struct drm_i915_private *dev_priv,
uint64_t fb_modifier, unsigned int cpp)
{
@@ -2260,67 +2265,34 @@ static unsigned int intel_tile_width(const struct drm_i915_private *dev_priv,
}
}

-unsigned int
-intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
- uint64_t fb_format_modifier, unsigned int plane)
+unsigned int intel_tile_height(const struct drm_i915_private *dev_priv,
+ uint64_t fb_modifier, unsigned int cpp)
{
- unsigned int tile_height;
- uint32_t pixel_bytes;
-
- switch (fb_format_modifier) {
- case DRM_FORMAT_MOD_NONE:
- tile_height = 1;
- break;
- case I915_FORMAT_MOD_X_TILED:
- tile_height = IS_GEN2(dev) ? 16 : 8;
- break;
- case I915_FORMAT_MOD_Y_TILED:
- tile_height = 32;
- break;
- case I915_FORMAT_MOD_Yf_TILED:
- pixel_bytes = drm_format_plane_cpp(pixel_format, plane);
- switch (pixel_bytes) {
- default:
- case 1:
- tile_height = 64;
- break;
- case 2:
- case 4:
- tile_height = 32;
- break;
- case 8:
- tile_height = 16;
- break;
- case 16:
- WARN_ONCE(1,
- "128-bit pixels are not supported for display!");
- tile_height = 16;
- break;
- }
- break;
- default:
- MISSING_CASE(fb_format_modifier);
- tile_height = 1;
- break;
- }
-
- return tile_height;
+ if (fb_modifier == DRM_FORMAT_MOD_NONE)
+ return 1;
+ else
+ return intel_tile_size(dev_priv) /
+ intel_tile_width(dev_priv, fb_modifier, cpp);
}

unsigned int
intel_fb_align_height(struct drm_device *dev, unsigned int height,
- uint32_t pixel_format, uint64_t fb_format_modifier)
+ uint32_t pixel_format, uint64_t fb_modifier)
{
- return ALIGN(height, intel_tile_height(dev, pixel_format,
- fb_format_modifier, 0));
+ unsigned int cpp = drm_format_plane_cpp(pixel_format, 0);
+ unsigned int tile_height = intel_tile_height(to_i915(dev), fb_modifier, cpp);
+
+ return ALIGN(height, tile_height);
}

static void
intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, struct drm_framebuffer *fb,
const struct drm_plane_state *plane_state)
{
+ struct drm_i915_private *dev_priv = to_i915(fb->dev);
struct intel_rotation_info *info = &view->params.rotation_info;
unsigned int tile_height, tile_pitch;
+ unsigned int cpp = drm_format_plane_cpp(fb->pixel_format, 0);

*view = i915_ggtt_view_normal;

@@ -2338,22 +2310,19 @@ intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, struct drm_framebuffer *fb,
info->uv_offset = fb->offsets[1];
info->fb_modifier = fb->modifier[0];

- tile_height = intel_tile_height(fb->dev, fb->pixel_format,
- fb->modifier[0], 0);
+ tile_height = intel_tile_height(dev_priv, fb->modifier[0], cpp);
tile_pitch = PAGE_SIZE / tile_height;
info->width_pages = DIV_ROUND_UP(fb->pitches[0], tile_pitch);
info->height_pages = DIV_ROUND_UP(fb->height, tile_height);
info->size = info->width_pages * info->height_pages * PAGE_SIZE;

if (info->pixel_format == DRM_FORMAT_NV12) {
- tile_height = intel_tile_height(fb->dev, fb->pixel_format,
- fb->modifier[0], 1);
+ cpp = drm_format_plane_cpp(fb->pixel_format, 1);
+ tile_height = intel_tile_height(dev_priv, fb->modifier[1], cpp);
tile_pitch = PAGE_SIZE / tile_height;
- info->width_pages_uv = DIV_ROUND_UP(fb->pitches[0], tile_pitch);
- info->height_pages_uv = DIV_ROUND_UP(fb->height / 2,
- tile_height);
- info->size_uv = info->width_pages_uv * info->height_pages_uv *
- PAGE_SIZE;
+ info->width_pages_uv = DIV_ROUND_UP(fb->pitches[1], tile_pitch);
+ info->height_pages_uv = DIV_ROUND_UP(fb->height / 2, tile_height);
+ info->size_uv = info->width_pages_uv * info->height_pages_uv * PAGE_SIZE;
}
}

@@ -3140,9 +3109,10 @@ static void skylake_update_primary_plane(struct drm_plane *plane,
WARN_ON(drm_rect_width(&plane_state->src) == 0);

if (intel_rotation_90_or_270(rotation)) {
+ int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
+
/* stride = Surface height in tiles */
- tile_height = intel_tile_height(dev, fb->pixel_format,
- fb->modifier[0], 0);
+ tile_height = intel_tile_height(dev_priv, fb->modifier[0], cpp);
stride = DIV_ROUND_UP(fb->height, tile_height);
x_offset = stride * tile_height - src_y - src_h;
y_offset = src_x;
@@ -11399,8 +11369,7 @@ static void skl_do_mmio_flip(struct intel_crtc *intel_crtc,
*/
if (intel_rotation_90_or_270(rotation)) {
/* stride = Surface height in tiles */
- tile_height = intel_tile_height(dev, fb->pixel_format,
- fb->modifier[0], 0);
+ tile_height = intel_tile_height(dev_priv, fb->modifier[0], 0);
stride = DIV_ROUND_UP(fb->height, tile_height);
} else {
stride = fb->pitches[0] /
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 9a8075b785ac..6aaaa8d3b81a 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1155,9 +1155,8 @@ int intel_plane_atomic_set_property(struct drm_plane *plane,
int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
struct drm_plane_state *plane_state);

-unsigned int
-intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
- uint64_t fb_format_modifier, unsigned int plane);
+unsigned int intel_tile_height(const struct drm_i915_private *dev_priv,
+ uint64_t fb_modifier, unsigned int cpp);

static inline bool
intel_rotation_90_or_270(unsigned int rotation)
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 6e7ac0ea0a41..39a7be02c181 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -239,9 +239,10 @@ skl_update_plane(struct drm_plane *drm_plane,
surf_addr = intel_plane_obj_offset(intel_plane, obj, 0);

if (intel_rotation_90_or_270(rotation)) {
+ int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
+
/* stride: Surface height in tiles */
- tile_height = intel_tile_height(dev, fb->pixel_format,
- fb->modifier[0], 0);
+ tile_height = intel_tile_height(dev_priv, fb->modifier[0], cpp);
stride = DIV_ROUND_UP(fb->height, tile_height);
plane_size = (src_w << 16) | src_h;
x_offset = stride * tile_height - y - (src_h + 1);