Re: [PATCH v1, 1/3] drm/mediatek: Separate aal module

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Hi, Yongqiang:

On Mon, 2021-04-12 at 14:35 +0800, Yongqiang Niu wrote:
> mt8183 aal has no gamma function

Separate this patch to two patch: one is add has_gamma config in aal.
another one is add mt8183 aal support.

Regards,
CK

> 
> Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/mediatek/Makefile           |   3 +-
>  drivers/gpu/drm/mediatek/mtk_disp_aal.c     | 167 ++++++++++++++++++++++++++++
>  drivers/gpu/drm/mediatek/mtk_disp_drv.h     |   9 ++
>  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c |  39 +------
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c      |   8 +-
>  drivers/gpu/drm/mediatek/mtk_drm_drv.h      |   1 +
>  6 files changed, 187 insertions(+), 40 deletions(-)
>  create mode 100644 drivers/gpu/drm/mediatek/mtk_disp_aal.c
> 
> diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
> index dc54a7a..29098d7 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_ccorr.o \
> +mediatek-drm-y := mtk_disp_aal.o \
> +		  mtk_disp_ccorr.o \
>  		  mtk_disp_color.o \
>  		  mtk_disp_gamma.o \
>  		  mtk_disp_ovl.o \
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_aal.c b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> new file mode 100644
> index 0000000..64b4528
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> @@ -0,0 +1,167 @@
> +// 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_AAL_EN				0x0000
> +#define AAL_EN						BIT(0)
> +#define DISP_AAL_SIZE				0x0030
> +
> +
> +struct mtk_disp_aal_data {
> +	bool has_gamma;
> +};
> +
> +/**
> + * struct mtk_disp_aal - DISP_AAL driver structure
> + * @ddp_comp - structure containing type enum and hardware resources
> + * @crtc - associated crtc to report irq events to
> + */
> +struct mtk_disp_aal {
> +	struct clk *clk;
> +	void __iomem *regs;
> +	struct cmdq_client_reg cmdq_reg;
> +	const struct mtk_disp_aal_data *data;
> +};
> +
> +int mtk_aal_clk_enable(struct device *dev)
> +{
> +	struct mtk_disp_aal *aal = dev_get_drvdata(dev);
> +
> +	return clk_prepare_enable(aal->clk);
> +}
> +
> +void mtk_aal_clk_disable(struct device *dev)
> +{
> +	struct mtk_disp_aal *aal = dev_get_drvdata(dev);
> +
> +	clk_disable_unprepare(aal->clk);
> +}
> +
> +void mtk_aal_config(struct device *dev, unsigned int w,
> +			   unsigned int h, unsigned int vrefresh,
> +			   unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
> +{
> +	struct mtk_disp_aal *aal = dev_get_drvdata(dev);
> +
> +	mtk_ddp_write(cmdq_pkt, w << 16 | h, &aal->cmdq_reg, aal->regs, DISP_AAL_SIZE);
> +}
> +
> +void mtk_aal_gamma_set(struct device *dev, struct drm_crtc_state *state)
> +{
> +	struct mtk_disp_aal *aal = dev_get_drvdata(dev);
> +
> +	if (aal->data && aal->data->has_gamma)
> +		mtk_gamma_set_common(aal->regs, state);
> +}
> +
> +void mtk_aal_start(struct device *dev)
> +{
> +	struct mtk_disp_aal *aal = dev_get_drvdata(dev);
> +
> +	writel(AAL_EN, aal->regs + DISP_AAL_EN);
> +}
> +
> +void mtk_aal_stop(struct device *dev)
> +{
> +	struct mtk_disp_aal *aal = dev_get_drvdata(dev);
> +
> +	writel_relaxed(0x0, aal->regs + DISP_AAL_EN);
> +}
> +
> +static int mtk_disp_aal_bind(struct device *dev, struct device *master,
> +			       void *data)
> +{
> +	return 0;
> +}
> +
> +static void mtk_disp_aal_unbind(struct device *dev, struct device *master,
> +				  void *data)
> +{
> +}
> +
> +static const struct component_ops mtk_disp_aal_component_ops = {
> +	.bind	= mtk_disp_aal_bind,
> +	.unbind = mtk_disp_aal_unbind,
> +};
> +
> +static int mtk_disp_aal_probe(struct platform_device *pdev)
> +{
> +	struct device *dev = &pdev->dev;
> +	struct mtk_disp_aal *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 aal 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 aal\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_aal_component_ops);
> +	if (ret)
> +		dev_err(dev, "Failed to add component: %d\n", ret);
> +
> +	return ret;
> +}
> +
> +static int mtk_disp_aal_remove(struct platform_device *pdev)
> +{
> +	component_del(&pdev->dev, &mtk_disp_aal_component_ops);
> +
> +	return 0;
> +}
> +
> +static const struct mtk_disp_aal_data mt8173_aal_driver_data = {
> +	.has_gamma = true,
> +};
> +
> +static const struct of_device_id mtk_disp_aal_driver_dt_match[] = {
> +	{ .compatible = "mediatek,mt8173-disp-aal",
> +	  .data = &mt8173_aal_driver_data},
> +	{ .compatible = "mediatek,mt8183-disp-aal"},
> +	{},
> +};
> +MODULE_DEVICE_TABLE(of, mtk_disp_aal_driver_dt_match);
> +
> +struct platform_driver mtk_disp_aal_driver = {
> +	.probe		= mtk_disp_aal_probe,
> +	.remove		= mtk_disp_aal_remove,
> +	.driver		= {
> +		.name	= "mediatek-disp-aal",
> +		.owner	= THIS_MODULE,
> +		.of_match_table = mtk_disp_aal_driver_dt_match,
> +	},
> +};
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> index cafd9df..86c3068 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"
>  
> +int mtk_aal_clk_enable(struct device *dev);
> +void mtk_aal_clk_disable(struct device *dev);
> +void mtk_aal_config(struct device *dev, unsigned int w,
> +		    unsigned int h, unsigned int vrefresh,
> +		    unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
> +void mtk_aal_gamma_set(struct device *dev, struct drm_crtc_state *state);
> +void mtk_aal_start(struct device *dev);
> +void mtk_aal_stop(struct device *dev);
> +
>  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);
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> index 75bc00e..f367142 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> @@ -32,9 +32,6 @@
>  
>  #define DISP_REG_UFO_START			0x0000
>  
> -#define DISP_AAL_EN				0x0000
> -#define DISP_AAL_SIZE				0x0030
> -
>  #define DISP_DITHER_EN				0x0000
>  #define DITHER_EN				BIT(0)
>  #define DISP_DITHER_CFG				0x0020
> @@ -48,8 +45,6 @@
>  
>  #define UFO_BYPASS				BIT(2)
>  
> -#define AAL_EN					BIT(0)
> -
>  #define DISP_DITHERING				BIT(2)
>  #define DITHER_LSB_ERR_SHIFT_R(x)		(((x) & 0x7) << 28)
>  #define DITHER_OVFLW_BIT_R(x)			(((x) & 0x7) << 24)
> @@ -190,36 +185,6 @@ static void mtk_ufoe_start(struct device *dev)
>  	writel(UFO_BYPASS, priv->regs + DISP_REG_UFO_START);
>  }
>  
> -static void mtk_aal_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, w << 16 | h, &priv->cmdq_reg, priv->regs, DISP_AAL_SIZE);
> -}
> -
> -static void mtk_aal_gamma_set(struct device *dev, struct drm_crtc_state *state)
> -{
> -	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
> -
> -	mtk_gamma_set_common(priv->regs, state);
> -}
> -
> -static void mtk_aal_start(struct device *dev)
> -{
> -	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
> -
> -	writel(AAL_EN, priv->regs + DISP_AAL_EN);
> -}
> -
> -static void mtk_aal_stop(struct device *dev)
> -{
> -	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
> -
> -	writel_relaxed(0x0, priv->regs + DISP_AAL_EN);
> -}
> -
>  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)
> @@ -247,8 +212,8 @@ static void mtk_dither_stop(struct device *dev)
>  }
>  
>  static const struct mtk_ddp_comp_funcs ddp_aal = {
> -	.clk_enable = mtk_ddp_clk_enable,
> -	.clk_disable = mtk_ddp_clk_disable,
> +	.clk_enable = mtk_aal_clk_enable,
> +	.clk_disable = mtk_aal_clk_disable,
>  	.gamma_set = mtk_aal_gamma_set,
>  	.config = mtk_aal_config,
>  	.start = mtk_aal_start,
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index b013d56..ae8b69d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -420,6 +420,8 @@ static void mtk_drm_unbind(struct device *dev)
>  	  .data = (void *)MTK_DISP_COLOR },
>  	{ .compatible = "mediatek,mt8173-disp-aal",
>  	  .data = (void *)MTK_DISP_AAL},
> +	{ .compatible = "mediatek,mt8183-disp-aal",
> +	  .data = (void *)MTK_DISP_AAL},
>  	{ .compatible = "mediatek,mt8173-disp-gamma",
>  	  .data = (void *)MTK_DISP_GAMMA, },
>  	{ .compatible = "mediatek,mt8183-disp-gamma",
> @@ -531,11 +533,12 @@ static int mtk_drm_probe(struct platform_device *pdev)
>  		private->comp_node[comp_id] = of_node_get(node);
>  
>  		/*
> -		 * Currently only the CCORR, COLOR, GAMMA, OVL, RDMA, DSI, and DPI
> +		 * Currently only the AAL, CCORR, COLOR, GAMMA, OVL, 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_CCORR ||
> +		if (comp_type == MTK_DISP_AAL ||
> +		    comp_type == MTK_DISP_CCORR ||
>  		    comp_type == MTK_DISP_COLOR ||
>  		    comp_type == MTK_DISP_GAMMA ||
>  		    comp_type == MTK_DISP_OVL ||
> @@ -635,6 +638,7 @@ static SIMPLE_DEV_PM_OPS(mtk_drm_pm_ops, mtk_drm_sys_suspend,
>  };
>  
>  static struct platform_driver * const mtk_drm_drivers[] = {
> +	&mtk_disp_aal_driver,
>  	&mtk_disp_ccorr_driver,
>  	&mtk_disp_color_driver,
>  	&mtk_disp_gamma_driver,
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> index 637f566..3e7d1e6 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_aal_driver;
>  extern struct platform_driver mtk_disp_ccorr_driver;
>  extern struct platform_driver mtk_disp_color_driver;
>  extern struct platform_driver mtk_disp_gamma_driver;

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