LXR linux/drivers/gpu/drm/rcar-du/rcar

   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
  13struct drm_color_lut;
  14struct 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 */
  22struct rcar_cmm_config {
  23        struct {
  24                struct drm_color_lut *table;
  25        } lut;
  26};
  27
  28#if IS_ENABLED(CONFIG_DRM_RCAR_CMM)
  29int rcar_cmm_init(struct platform_device *pdev);
  30
  31int rcar_cmm_enable(struct platform_device *pdev);
  32void rcar_cmm_disable(struct platform_device *pdev);
  33
  34int rcar_cmm_setup(struct platform_device *pdev,
  35                   const struct rcar_cmm_config *config);
  36#else
  37static inline int rcar_cmm_init(struct platform_device *pdev)
  38{
  39        return -ENODEV;
  40}
  41
  42static inline int rcar_cmm_enable(struct platform_device *pdev)
  43{
  44        return 0;
  45}
  46
  47static inline void rcar_cmm_disable(struct platform_device *pdev)
  48{
  49}
  50
  51static 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__ */
  59