Re: [PATCH v2, 1/3] drm/mediatek: Separate aal module

From: Chun-Kuang Hu
Date: Mon Jul 12 2021 - 11:33:01 EST

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In reply to: Yongqiang Niu: "[PATCH v2, 1/3] drm/mediatek: Separate aal module"
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Hi, Yongqiang:

Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx> 於 2021年7月12日週一上午9:03寫道：
>
> mt8183 aal has no gamma function

Applied to mediatek-drm-next [1], thanks.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next

Regards,
Chun-Kuang.

>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/Makefile | 3 +-
> drivers/gpu/drm/mediatek/mtk_disp_aal.c | 166 ++++++++++++++++++++++++++++
> 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 | 6 +-
> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 +
> 6 files changed, 184 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..fb212e96
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> @@ -0,0 +1,166 @@
> +// 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},
> + {},
> +};
> +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 b46bdb8..67a585e 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -532,11 +532,12 @@ 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 ||
> @@ -636,6 +637,7 @@ 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;
> --
> 1.8.1.1.dirty
>

Next message: Matthew Wilcox (Oracle): "[PATCH] mm: Make copy_huge_page() always available"
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In reply to: Yongqiang Niu: "[PATCH v2, 1/3] drm/mediatek: Separate aal module"
Next in thread: Yongqiang Niu: "[PATCH v2, 3/3] arm64: dts: mt8183: refine aal compatible name"
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