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drm/i915/skl: Read back the DDB allocation hw state

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This logically belongs to the WM state, so do it there.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2014-11-04 17:06:49 +00:00 committed by Daniel Vetter
parent 53b0deb4cb
commit a269c5839b
1 changed files with 29 additions and 0 deletions
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29
drivers/gpu/drm/i915/intel_pm.c
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@ -3051,6 +3051,32 @@ static unsigned int skl_cursor_allocation(const struct intel_wm_config *config)
return 8;
}
static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg)
{
entry->start = reg & 0x3ff;
entry->end = (reg >> 16) & 0x3ff;
}
static void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv,
struct skl_ddb_allocation *ddb /* out */)
{
struct drm_device *dev = dev_priv->dev;
enum pipe pipe;
int plane;
u32 val;
for_each_pipe(dev_priv, pipe) {
for_each_plane(pipe, plane) {
val = I915_READ(PLANE_BUF_CFG(pipe, plane));
skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane],
val);
}
val = I915_READ(CUR_BUF_CFG(pipe));
skl_ddb_entry_init_from_hw(&ddb->cursor[pipe], val);
}
}
static unsigned int
skl_plane_relative_data_rate(const struct intel_plane_wm_parameters *p)
{
@ -3749,8 +3775,11 @@ static void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc)
void skl_wm_get_hw_state(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct skl_ddb_allocation *ddb = &dev_priv->wm.skl_hw.ddb;
struct drm_crtc *crtc;
skl_ddb_get_hw_state(dev_priv, ddb);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
skl_pipe_wm_get_hw_state(crtc);
}