drivers/gpu/drm/rcar-du/rcar_cmm.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * rcar_cmm.h -- R-Car Display Unit Color Management Module
   4  *
   5  * Copyright (C) 2019 Jacopo Mondi <jacopo+renesas@jmondi.org>
   6  */
   7
   8 #ifndef __RCAR_CMM_H__
   9 #define __RCAR_CMM_H__
  10
  11 #define CM2_LUT_SIZE            256
  12
  13 struct drm_color_lut;
  14 struct platform_device;
  15
  16 /**
  17  * struct rcar_cmm_config - CMM configuration
  18  *
  19  * @lut:        1D-LUT configuration
  20  * @lut.table:  1D-LUT table entries. Disable LUT operations when NULL
  21  */
  22 struct rcar_cmm_config {
  23         struct {
  24                 struct drm_color_lut *table;
  25         } lut;
  26 };
  27
  28 #if IS_ENABLED(CONFIG_DRM_RCAR_CMM)
  29 int rcar_cmm_init(struct platform_device *pdev);
  30
  31 int rcar_cmm_enable(struct platform_device *pdev);
  32 void rcar_cmm_disable(struct platform_device *pdev);
  33
  34 int rcar_cmm_setup(struct platform_device *pdev,
  35                    const struct rcar_cmm_config *config);
  36 #else
  37 static inline int rcar_cmm_init(struct platform_device *pdev)
  38 {
  39         return -ENODEV;
  40 }
  41
  42 static inline int rcar_cmm_enable(struct platform_device *pdev)
  43 {
  44         return 0;
  45 }
  46
  47 static inline void rcar_cmm_disable(struct platform_device *pdev)
  48 {
  49 }
  50
  51 static inline int rcar_cmm_setup(struct platform_device *pdev,
  52                                  const struct rcar_cmm_config *config)
  53 {
  54         return 0;
  55 }
  56 #endif /* IS_ENABLED(CONFIG_DRM_RCAR_CMM) */
  57
  58 #endif /* __RCAR_CMM_H__ */