Commit 66a2d927 authored by Ville Syrjälä's avatar Ville Syrjälä

drm/i915: Make intel_adjust_tile_offset() work for linear buffers

To make life less surprising we can make intel_adjust_tile_offset()
deal with linear buffers as well. Currently it doesn't seem like there's
a real need for this since only X tiling and NV12 (which would always
be tiled currently) should need it. But I've used it for some debug
hacks already so seems like a reasonable thing to have.
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: default avatarSivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470821001-25272-10-git-send-email-ville.syrjala@linux.intel.com
parent b9b24038
......@@ -2316,13 +2316,10 @@ void intel_add_fb_offsets(int *x, int *y,
}
/*
* Adjust the tile offset by moving the difference into
* the x/y offsets.
*
* Input tile dimensions and pitch must already be
* rotated to match x and y, and in pixel units.
*/
static u32 intel_adjust_tile_offset(int *x, int *y,
static u32 _intel_adjust_tile_offset(int *x, int *y,
unsigned int tile_width,
unsigned int tile_height,
unsigned int tile_size,
......@@ -2349,6 +2346,50 @@ static u32 intel_adjust_tile_offset(int *x, int *y,
return new_offset;
}
/*
* Adjust the tile offset by moving the difference into
* the x/y offsets.
*/
static u32 intel_adjust_tile_offset(int *x, int *y,
const struct intel_plane_state *state, int plane,
u32 old_offset, u32 new_offset)
{
const struct drm_i915_private *dev_priv = to_i915(state->base.plane->dev);
const struct drm_framebuffer *fb = state->base.fb;
unsigned int cpp = drm_format_plane_cpp(fb->pixel_format, plane);
unsigned int rotation = state->base.rotation;
unsigned int pitch = intel_fb_pitch(fb, plane, rotation);
WARN_ON(new_offset > old_offset);
if (fb->modifier[plane] != DRM_FORMAT_MOD_NONE) {
unsigned int tile_size, tile_width, tile_height;
unsigned int pitch_tiles;
tile_size = intel_tile_size(dev_priv);
intel_tile_dims(dev_priv, &tile_width, &tile_height,
fb->modifier[plane], cpp);
if (intel_rotation_90_or_270(rotation)) {
pitch_tiles = pitch / tile_height;
swap(tile_width, tile_height);
} else {
pitch_tiles = pitch / (tile_width * cpp);
}
_intel_adjust_tile_offset(x, y, tile_width, tile_height,
tile_size, pitch_tiles,
old_offset, new_offset);
} else {
old_offset += *y * pitch + *x * cpp;
*y = (old_offset - new_offset) / pitch;
*x = ((old_offset - new_offset) - *y * pitch) / cpp;
}
return new_offset;
}
/*
* Computes the linear offset to the base tile and adjusts
* x, y. bytes per pixel is assumed to be a power-of-two.
......@@ -2401,7 +2442,7 @@ static u32 _intel_compute_tile_offset(const struct drm_i915_private *dev_priv,
offset = (tile_rows * pitch_tiles + tiles) * tile_size;
offset_aligned = offset & ~alignment;
intel_adjust_tile_offset(x, y, tile_width, tile_height,
_intel_adjust_tile_offset(x, y, tile_width, tile_height,
tile_size, pitch_tiles,
offset, offset_aligned);
} else {
......@@ -2550,7 +2591,7 @@ intel_fill_fb_info(struct drm_i915_private *dev_priv,
* We only keep the x/y offsets, so push all of the
* gtt offset into the x/y offsets.
*/
intel_adjust_tile_offset(&x, &y, tile_size,
_intel_adjust_tile_offset(&x, &y, tile_size,
tile_width, tile_height, pitch_tiles,
gtt_offset_rotated * tile_size, 0);
......
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