e08e934d6c
Add a driver for the R-Car Display Unit Color Correction Module. In most of Gen3 SoCs, each DU output channel is provided with a CMM unit to perform image enhancement and color correction. Add support for CMM through a driver that supports configuration of the 1-dimensional LUT table. More advanced CMM features will be implemented on top of this initial one. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* rcar_cmm.h -- R-Car Display Unit Color Management Module
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*
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* Copyright (C) 2019 Jacopo Mondi <jacopo+renesas@jmondi.org>
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*/
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#ifndef __RCAR_CMM_H__
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#define __RCAR_CMM_H__
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#define CM2_LUT_SIZE 256
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struct drm_color_lut;
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struct platform_device;
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/**
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* struct rcar_cmm_config - CMM configuration
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*
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* @lut: 1D-LUT configuration
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* @lut.table: 1D-LUT table entries. Disable LUT operations when NULL
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*/
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struct rcar_cmm_config {
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struct {
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struct drm_color_lut *table;
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} lut;
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};
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#if IS_ENABLED(CONFIG_DRM_RCAR_CMM)
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int rcar_cmm_init(struct platform_device *pdev);
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int rcar_cmm_enable(struct platform_device *pdev);
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void rcar_cmm_disable(struct platform_device *pdev);
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int rcar_cmm_setup(struct platform_device *pdev,
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const struct rcar_cmm_config *config);
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#else
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static inline int rcar_cmm_init(struct platform_device *pdev)
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{
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return -ENODEV;
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}
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static inline int rcar_cmm_enable(struct platform_device *pdev)
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{
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return 0;
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}
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static inline void rcar_cmm_disable(struct platform_device *pdev)
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{
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}
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static inline int rcar_cmm_setup(struct platform_device *pdev,
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const struct rcar_cmm_config *config)
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{
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return 0;
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}
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#endif /* IS_ENABLED(CONFIG_DRM_RCAR_CMM) */
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#endif /* __RCAR_CMM_H__ */
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