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| author | Mihail Atanassov <mihail.atanassov@arm.com> | 2017-02-01 17:48:50 +0300 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2017-04-24 12:45:34 +0300 |
| commit | 02725d31371b66b97bc58b2a81f0c6dc40970598 (patch) | |
| tree | d9fca8bbd977ed6b7c368e394cd0910756e62e11 /drivers/gpu/drm/arm/malidp_hw.h | |
| parent | 99665d07218345647875fea9ad4979bbe297c104 (diff) | |
| download | linux-02725d31371b66b97bc58b2a81f0c6dc40970598.tar.xz | |
drm: mali-dp: enable gamma support
Add gamma via the DRM GAMMA_LUT/GAMMA_LUT_SIZE CRTC
properties. The expected LUT size is 4096 in order
to produce as accurate a set of segments as possible.
This version uses only the green channel's gamma curve
to set the hardware curve on DP550/650. For the sake of
simplicity, it uses the same table of coefficients for
all 3 curves on DP500.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Diffstat (limited to 'drivers/gpu/drm/arm/malidp_hw.h')
| -rw-r--r-- | drivers/gpu/drm/arm/malidp_hw.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/malidp_hw.h b/drivers/gpu/drm/arm/malidp_hw.h index ea2dbae08990..c2df6b6e7645 100644 --- a/drivers/gpu/drm/arm/malidp_hw.h +++ b/drivers/gpu/drm/arm/malidp_hw.h @@ -67,6 +67,8 @@ struct malidp_layer { struct malidp_hw_regmap { /* address offset of the DE register bank */ /* is always 0x0000 */ + /* address offset of the DE coefficients registers */ + const u16 coeffs_base; /* address offset of the SE registers bank */ const u16 se_base; /* address offset of the DC registers bank */ @@ -257,4 +259,8 @@ static inline bool malidp_hw_pitch_valid(struct malidp_hw_device *hwdev, #define MALIDP_BGND_COLOR_G 0x000 #define MALIDP_BGND_COLOR_B 0x000 +#define MALIDP_COEFFTAB_NUM_COEFFS 64 + +#define MALIDP_GAMMA_LUT_SIZE 4096 + #endif /* __MALIDP_HW_H__ */ |