Re: [PATCH v5 4/8] drm/mediatek: separate ccorr module

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Hi, Hsin-Yi:

On Mon, 2021-02-01 at 18:37 +0800, Hsin-Yi Wang wrote:
> From: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> 
> ccorr ctm matrix bits will be different in mt8192

Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>

> 
> Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/mediatek/Makefile           |   3 +-
>  drivers/gpu/drm/mediatek/mtk_disp_ccorr.c   | 216 ++++++++++++++++++++
>  drivers/gpu/drm/mediatek/mtk_disp_drv.h     |   9 +
>  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c |  95 +--------
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c      |   8 +-
>  drivers/gpu/drm/mediatek/mtk_drm_drv.h      |   1 +
>  6 files changed, 236 insertions(+), 96 deletions(-)
>  create mode 100644 drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
> 
> diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
> index 13a0eafabf9c0..f119bef6d6e66 100644
> --- a/drivers/gpu/drm/mediatek/Makefile
> +++ b/drivers/gpu/drm/mediatek/Makefile
> @@ -1,6 +1,7 @@
>  # SPDX-License-Identifier: GPL-2.0
>  
> -mediatek-drm-y := mtk_disp_color.o \
> +mediatek-drm-y := mtk_disp_ccorr.o \
> +		  mtk_disp_color.o \
>  		  mtk_disp_gamma.o \
>  		  mtk_disp_ovl.o \
>  		  mtk_disp_postmask.o \
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
> new file mode 100644
> index 0000000000000..6ee2431e6b843
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
> @@ -0,0 +1,216 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2021 MediaTek Inc.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/component.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/of_irq.h>
> +#include <linux/platform_device.h>
> +#include <linux/soc/mediatek/mtk-cmdq.h>
> +
> +#include "mtk_disp_drv.h"
> +#include "mtk_drm_crtc.h"
> +#include "mtk_drm_ddp_comp.h"
> +
> +#define DISP_CCORR_EN				0x0000
> +#define CCORR_EN					BIT(0)
> +#define DISP_CCORR_CFG				0x0020
> +#define CCORR_RELAY_MODE				BIT(0)
> +#define CCORR_ENGINE_EN					BIT(1)
> +#define CCORR_GAMMA_OFF					BIT(2)
> +#define CCORR_WGAMUT_SRC_CLIP				BIT(3)
> +#define DISP_CCORR_SIZE				0x0030
> +#define DISP_CCORR_COEF_0			0x0080
> +#define DISP_CCORR_COEF_1			0x0084
> +#define DISP_CCORR_COEF_2			0x0088
> +#define DISP_CCORR_COEF_3			0x008C
> +#define DISP_CCORR_COEF_4			0x0090
> +
> +struct mtk_disp_ccorr_data {
> +	u32 reserved;
> +};
> +
> +/**
> + * struct mtk_disp_ccorr - DISP_CCORR driver structure
> + * @ddp_comp - structure containing type enum and hardware resources
> + * @crtc - associated crtc to report irq events to
> + */
> +struct mtk_disp_ccorr {
> +	struct clk *clk;
> +	void __iomem *regs;
> +	struct cmdq_client_reg cmdq_reg;
> +	const struct mtk_disp_ccorr_data	*data;
> +};
> +
> +int mtk_ccorr_clk_enable(struct device *dev)
> +{
> +	struct mtk_disp_ccorr *ccorr = dev_get_drvdata(dev);
> +
> +	return clk_prepare_enable(ccorr->clk);
> +}
> +
> +void mtk_ccorr_clk_disable(struct device *dev)
> +{
> +	struct mtk_disp_ccorr *ccorr = dev_get_drvdata(dev);
> +
> +	clk_disable_unprepare(ccorr->clk);
> +}
> +
> +void mtk_ccorr_config(struct device *dev, unsigned int w,
> +			     unsigned int h, unsigned int vrefresh,
> +			     unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
> +{
> +	struct mtk_disp_ccorr *ccorr = dev_get_drvdata(dev);
> +
> +	mtk_ddp_write(cmdq_pkt, h << 16 | w, &ccorr->cmdq_reg, ccorr->regs,
> +		      DISP_CCORR_SIZE);
> +	mtk_ddp_write(cmdq_pkt, CCORR_ENGINE_EN, &ccorr->cmdq_reg, ccorr->regs,
> +		      DISP_CCORR_CFG);
> +}
> +
> +void mtk_ccorr_start(struct device *dev)
> +{
> +	struct mtk_disp_ccorr *ccorr = dev_get_drvdata(dev);
> +
> +	writel(CCORR_EN, ccorr->regs + DISP_CCORR_EN);
> +}
> +
> +void mtk_ccorr_stop(struct device *dev)
> +{
> +	struct mtk_disp_ccorr *ccorr = dev_get_drvdata(dev);
> +
> +	writel_relaxed(0x0, ccorr->regs + DISP_CCORR_EN);
> +}
> +
> +/* Converts a DRM S31.32 value to the HW S1.10 format. */
> +static u16 mtk_ctm_s31_32_to_s1_10(u64 in)
> +{
> +	u16 r;
> +
> +	/* Sign bit. */
> +	r = in & BIT_ULL(63) ? BIT(11) : 0;
> +
> +	if ((in & GENMASK_ULL(62, 33)) > 0) {
> +		/* identity value 0x100000000 -> 0x400, */
> +		/* if bigger this, set it to max 0x7ff. */
> +		r |= GENMASK(10, 0);
> +	} else {
> +		/* take the 11 most important bits. */
> +		r |= (in >> 22) & GENMASK(10, 0);
> +	}
> +
> +	return r;
> +}
> +
> +void mtk_ccorr_ctm_set(struct device *dev, struct drm_crtc_state *state)
> +{
> +	struct mtk_disp_ccorr *ccorr = dev_get_drvdata(dev);
> +	struct drm_property_blob *blob = state->ctm;
> +	struct drm_color_ctm *ctm;
> +	const u64 *input;
> +	uint16_t coeffs[9] = { 0 };
> +	int i;
> +	struct cmdq_pkt *cmdq_pkt = NULL;
> +
> +	if (!blob)
> +		return;
> +
> +	ctm = (struct drm_color_ctm *)blob->data;
> +	input = ctm->matrix;
> +
> +	for (i = 0; i < ARRAY_SIZE(coeffs); i++)
> +		coeffs[i] = mtk_ctm_s31_32_to_s1_10(input[i]);
> +
> +	mtk_ddp_write(cmdq_pkt, coeffs[0] << 16 | coeffs[1],
> +		      &ccorr->cmdq_reg, ccorr->regs, DISP_CCORR_COEF_0);
> +	mtk_ddp_write(cmdq_pkt, coeffs[2] << 16 | coeffs[3],
> +		      &ccorr->cmdq_reg, ccorr->regs, DISP_CCORR_COEF_1);
> +	mtk_ddp_write(cmdq_pkt, coeffs[4] << 16 | coeffs[5],
> +		      &ccorr->cmdq_reg, ccorr->regs, DISP_CCORR_COEF_2);
> +	mtk_ddp_write(cmdq_pkt, coeffs[6] << 16 | coeffs[7],
> +		      &ccorr->cmdq_reg, ccorr->regs, DISP_CCORR_COEF_3);
> +	mtk_ddp_write(cmdq_pkt, coeffs[8] << 16,
> +		      &ccorr->cmdq_reg, ccorr->regs, DISP_CCORR_COEF_4);
> +}
> +
> +static int mtk_disp_ccorr_bind(struct device *dev, struct device *master,
> +			       void *data)
> +{
> +	return 0;
> +}
> +
> +static void mtk_disp_ccorr_unbind(struct device *dev, struct device *master,
> +				  void *data)
> +{
> +}
> +
> +static const struct component_ops mtk_disp_ccorr_component_ops = {
> +	.bind	= mtk_disp_ccorr_bind,
> +	.unbind	= mtk_disp_ccorr_unbind,
> +};
> +
> +static int mtk_disp_ccorr_probe(struct platform_device *pdev)
> +{
> +	struct device *dev = &pdev->dev;
> +	struct mtk_disp_ccorr *priv;
> +	struct resource *res;
> +	int ret;
> +
> +	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> +	if (!priv)
> +		return -ENOMEM;
> +
> +	priv->clk = devm_clk_get(dev, NULL);
> +	if (IS_ERR(priv->clk)) {
> +		dev_err(dev, "failed to get ccorr clk\n");
> +		return PTR_ERR(priv->clk);
> +	}
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	priv->regs = devm_ioremap_resource(dev, res);
> +	if (IS_ERR(priv->regs)) {
> +		dev_err(dev, "failed to ioremap ccorr\n");
> +		return PTR_ERR(priv->regs);
> +	}
> +
> +#if IS_REACHABLE(CONFIG_MTK_CMDQ)
> +	ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
> +	if (ret)
> +		dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
> +#endif
> +
> +	priv->data = of_device_get_match_data(dev);
> +	platform_set_drvdata(pdev, priv);
> +
> +	ret = component_add(dev, &mtk_disp_ccorr_component_ops);
> +	if (ret)
> +		dev_err(dev, "Failed to add component: %d\n", ret);
> +
> +	return ret;
> +}
> +
> +static int mtk_disp_ccorr_remove(struct platform_device *pdev)
> +{
> +	component_del(&pdev->dev, &mtk_disp_ccorr_component_ops);
> +
> +	return 0;
> +}
> +
> +static const struct of_device_id mtk_disp_ccorr_driver_dt_match[] = {
> +	{ .compatible = "mediatek,mt8183-disp-ccorr"},
> +	{},
> +};
> +MODULE_DEVICE_TABLE(of, mtk_disp_ccorr_driver_dt_match);
> +
> +struct platform_driver mtk_disp_ccorr_driver = {
> +	.probe		= mtk_disp_ccorr_probe,
> +	.remove		= mtk_disp_ccorr_remove,
> +	.driver		= {
> +		.name	= "mediatek-disp-ccorr",
> +		.owner	= THIS_MODULE,
> +		.of_match_table = mtk_disp_ccorr_driver_dt_match,
> +	},
> +};
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> index 06d4d4e1c0d05..469d4e12b2003 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> @@ -9,6 +9,15 @@
>  #include <linux/soc/mediatek/mtk-cmdq.h>
>  #include "mtk_drm_plane.h"
>  
> +void mtk_ccorr_ctm_set(struct device *dev, struct drm_crtc_state *state);
> +int mtk_ccorr_clk_enable(struct device *dev);
> +void mtk_ccorr_clk_disable(struct device *dev);
> +void mtk_ccorr_config(struct device *dev, unsigned int w,
> +		      unsigned int h, unsigned int vrefresh,
> +		      unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
> +void mtk_ccorr_start(struct device *dev);
> +void mtk_ccorr_stop(struct device *dev);
> +
>  void mtk_color_bypass_shadow(struct device *dev);
>  int mtk_color_clk_enable(struct device *dev);
>  void mtk_color_clk_disable(struct device *dev);
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> index d884807809635..4a8015d247ec7 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> @@ -35,20 +35,6 @@
>  #define DISP_AAL_EN				0x0000
>  #define DISP_AAL_SIZE				0x0030
>  
> -#define DISP_CCORR_EN				0x0000
> -#define CCORR_EN				BIT(0)
> -#define DISP_CCORR_CFG				0x0020
> -#define CCORR_RELAY_MODE			BIT(0)
> -#define CCORR_ENGINE_EN				BIT(1)
> -#define CCORR_GAMMA_OFF				BIT(2)
> -#define CCORR_WGAMUT_SRC_CLIP			BIT(3)
> -#define DISP_CCORR_SIZE				0x0030
> -#define DISP_CCORR_COEF_0			0x0080
> -#define DISP_CCORR_COEF_1			0x0084
> -#define DISP_CCORR_COEF_2			0x0088
> -#define DISP_CCORR_COEF_3			0x008C
> -#define DISP_CCORR_COEF_4			0x0090
> -
>  #define DISP_DITHER_EN				0x0000
>  #define DITHER_EN				BIT(0)
>  #define DISP_DITHER_CFG				0x0020
> @@ -234,82 +220,6 @@ static void mtk_aal_stop(struct device *dev)
>  	writel_relaxed(0x0, priv->regs + DISP_AAL_EN);
>  }
>  
> -static void mtk_ccorr_config(struct device *dev, unsigned int w,
> -			     unsigned int h, unsigned int vrefresh,
> -			     unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
> -{
> -	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
> -
> -	mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, DISP_CCORR_SIZE);
> -	mtk_ddp_write(cmdq_pkt, CCORR_ENGINE_EN, &priv->cmdq_reg, priv->regs, DISP_CCORR_CFG);
> -}
> -
> -static void mtk_ccorr_start(struct device *dev)
> -{
> -	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
> -
> -	writel(CCORR_EN, priv->regs + DISP_CCORR_EN);
> -}
> -
> -static void mtk_ccorr_stop(struct device *dev)
> -{
> -	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
> -
> -	writel_relaxed(0x0, priv->regs + DISP_CCORR_EN);
> -}
> -
> -/* Converts a DRM S31.32 value to the HW S1.10 format. */
> -static u16 mtk_ctm_s31_32_to_s1_10(u64 in)
> -{
> -	u16 r;
> -
> -	/* Sign bit. */
> -	r = in & BIT_ULL(63) ? BIT(11) : 0;
> -
> -	if ((in & GENMASK_ULL(62, 33)) > 0) {
> -		/* identity value 0x100000000 -> 0x400, */
> -		/* if bigger this, set it to max 0x7ff. */
> -		r |= GENMASK(10, 0);
> -	} else {
> -		/* take the 11 most important bits. */
> -		r |= (in >> 22) & GENMASK(10, 0);
> -	}
> -
> -	return r;
> -}
> -
> -static void mtk_ccorr_ctm_set(struct device *dev,
> -			      struct drm_crtc_state *state)
> -{
> -	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
> -	struct drm_property_blob *blob = state->ctm;
> -	struct drm_color_ctm *ctm;
> -	const u64 *input;
> -	uint16_t coeffs[9] = { 0 };
> -	int i;
> -	struct cmdq_pkt *cmdq_pkt = NULL;
> -
> -	if (!blob)
> -		return;
> -
> -	ctm = (struct drm_color_ctm *)blob->data;
> -	input = ctm->matrix;
> -
> -	for (i = 0; i < ARRAY_SIZE(coeffs); i++)
> -		coeffs[i] = mtk_ctm_s31_32_to_s1_10(input[i]);
> -
> -	mtk_ddp_write(cmdq_pkt, coeffs[0] << 16 | coeffs[1],
> -		      &priv->cmdq_reg, priv->regs, DISP_CCORR_COEF_0);
> -	mtk_ddp_write(cmdq_pkt, coeffs[2] << 16 | coeffs[3],
> -		      &priv->cmdq_reg, priv->regs, DISP_CCORR_COEF_1);
> -	mtk_ddp_write(cmdq_pkt, coeffs[4] << 16 | coeffs[5],
> -		      &priv->cmdq_reg, priv->regs, DISP_CCORR_COEF_2);
> -	mtk_ddp_write(cmdq_pkt, coeffs[6] << 16 | coeffs[7],
> -		      &priv->cmdq_reg, priv->regs, DISP_CCORR_COEF_3);
> -	mtk_ddp_write(cmdq_pkt, coeffs[8] << 16,
> -		      &priv->cmdq_reg, priv->regs, DISP_CCORR_COEF_4);
> -}
> -
>  static void mtk_dither_config(struct device *dev, unsigned int w,
>  			      unsigned int h, unsigned int vrefresh,
>  			      unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
> @@ -348,8 +258,8 @@ static const struct mtk_ddp_comp_funcs ddp_aal = {
>  };
>  
>  static const struct mtk_ddp_comp_funcs ddp_ccorr = {
> -	.clk_enable = mtk_ddp_clk_enable,
> -	.clk_disable = mtk_ddp_clk_disable,
> +	.clk_enable = mtk_ccorr_clk_enable,
> +	.clk_disable = mtk_ccorr_clk_disable,
>  	.config = mtk_ccorr_config,
>  	.start = mtk_ccorr_start,
>  	.stop = mtk_ccorr_stop,
> @@ -610,6 +520,7 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp,
>  	}
>  
>  	if (type == MTK_DISP_BLS ||
> +	    type == MTK_DISP_CCORR ||
>  	    type == MTK_DISP_COLOR ||
>  	    type == MTK_DISP_GAMMA ||
>  	    type == MTK_DISP_POSTMASK ||
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index d99afc8528684..3da8996438dbc 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -531,11 +531,12 @@ static int mtk_drm_probe(struct platform_device *pdev)
>  		private->comp_node[comp_id] = of_node_get(node);
>  
>  		/*
> -		 * Currently only the COLOR, GAMMA, OVL, POSTMASK, RDMA, DSI, and DPI blocks have
> -		 * separate component platform drivers and initialize their own
> +		 * Currently only the CCORR, COLOR, GAMMA, OVL, POSTMASK, RDMA, DSI, and DPI
> +		 * blocks have separate component platform drivers and initialize their own
>  		 * DDP component structure. The others are initialized here.
>  		 */
> -		if (comp_type == MTK_DISP_COLOR ||
> +		if (comp_type == MTK_DISP_CCORR ||
> +		    comp_type == MTK_DISP_COLOR ||
>  		    comp_type == MTK_DISP_GAMMA ||
>  		    comp_type == MTK_DISP_OVL ||
>  		    comp_type == MTK_DISP_OVL_2L ||
> @@ -635,6 +636,7 @@ static struct platform_driver mtk_drm_platform_driver = {
>  };
>  
>  static struct platform_driver * const mtk_drm_drivers[] = {
> +	&mtk_disp_ccorr_driver,
>  	&mtk_disp_color_driver,
>  	&mtk_disp_gamma_driver,
>  	&mtk_disp_ovl_driver,
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> index 7e7b28e32aa2f..b49062364c3d2 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> @@ -46,6 +46,7 @@ struct mtk_drm_private {
>  	struct drm_atomic_state *suspend_state;
>  };
>  
> +extern struct platform_driver mtk_disp_ccorr_driver;
>  extern struct platform_driver mtk_disp_color_driver;
>  extern struct platform_driver mtk_disp_gamma_driver;
>  extern struct platform_driver mtk_disp_ovl_driver;





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