drm/i915: Extract out gamma table and CSC to their own file
The moves a couple of functions programming the gamma LUT and CSC
units into their own file.
On generations prior to Haswell there is only a gamma LUT. From
haswell on there is also a new enhanced color correction unit that
isn't used yet. This is why we need to set the GAMMA_MODE register,
either we're using the legacy 8bits LUT or enhanced LUTs (of 10 or
12bits).
The CSC unit is only available from Haswell on.
We also need to make a special case for CherryView which is recognized
as a gen 8 but doesn't have the same enhanced color correction unit
from Haswell on.
v2: Fix access to GAMMA_MODE register on older generations than
Haswell (from Matt Roper's comments)
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1458125837-2576-2-git-send-email-lionel.g.landwerlin@intel.com
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index ba45245..5d0da22 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1199,6 +1199,9 @@
enum pipe pipe, bool state);
#define assert_pll_enabled(d, p) assert_pll(d, p, true)
#define assert_pll_disabled(d, p) assert_pll(d, p, false)
+void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state);
+#define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
+#define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state);
#define assert_fdi_rx_pll_enabled(d, p) assert_fdi_rx_pll(d, p, true)
@@ -1660,4 +1663,11 @@
struct drm_plane_state *state);
extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
+/* intel_color.c */
+void intel_color_init(struct drm_crtc *crtc);
+void intel_color_set_csc(struct drm_crtc *crtc);
+void intel_color_load_luts(struct drm_crtc *crtc);
+void intel_color_legacy_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, uint32_t start, uint32_t size);
+
#endif /* __INTEL_DRV_H__ */