Hi,
On 2 June 2015 at 12:25, Jindal, Sonika sonika.jindal@intel.com wrote:
On 6/2/2015 1:22 AM, Kausal Malladi wrote:
struct drm_intel_gamma { __u32 flags; (The flag variable will indicate if the property to be set/get is Gamma or DeGamma) __u32 gamma_level; (The gamma_level variable indicates if the Gamma correction is to be applied on Pipe/plane) __u32 gamma_precision; (The Gamma precision indicates the Gamma mode to be applied)
Supported precisions are - #define I915_GAMMA_PRECISION_UNKNOWN 0 #define I915_GAMMA_PRECISION_CURRENT 0xFFFFFFFF #define I915_GAMMA_PRECISION_LEGACY (1 << 0) #define I915_GAMMA_PRECISION_10BIT (1 << 1) #define I915_GAMMA_PRECISION_12BIT (1 << 2) #define I915_GAMMA_PRECISION_14BIT (1 << 3) #define I915_GAMMA_PRECISION_16BIT (1 << 4) __u32 num_samples; (The num_samples indicates the number of Gamma correction coefficients) __u32 reserved; __u64 gamma_ptr; (Points to the raw Gamma color correction values)};
Please use the atomic interface and blob properties for this instead. A user-created blob property can replace the contents of gamma_ptr, you can replace gamma_level by choosing whether you apply the properties to a CRTC (pipe) or plane, and then you just need separate properties for precision and num_samples.
Cheers, Daniel