[PATCH RESEND v3 3/9] drm/mediatek: Adjust mtk_drm_gamma_set_common parameters

[CK Hu]

Hi, Jason:

On Mon, 2022-09-12 at 09:30 +0800, Jason-JH.Lin wrote:
> Adjust the parameters in mtk_drm_gamma_set_common()
>   - add (struct device *dev) to get lut_diff from gamma's driver data
>   - remove (bool lut_diff) and use false as default value in the
> function
> 
> Fixes: 051524cbe62d ("FROMGIT: drm/mediatek: Add lut diff flag for
> new gamma hardware support")
> Signed-off-by: Jason-JH.Lin <jason-jh.lin at mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_disp_aal.c   |  2 +-
>  drivers/gpu/drm/mediatek/mtk_disp_drv.h   |  2 +-
>  drivers/gpu/drm/mediatek/mtk_disp_gamma.c | 13 +++++++------
>  3 files changed, 9 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> index 0f9d7efb61d7..6517e0a5a7d8 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> @@ -66,7 +66,7 @@ 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, false);
> +		mtk_gamma_set_common(NULL, aal->regs, state);
>  }
>  
>  void mtk_aal_start(struct device *dev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> index 33e61a136bbc..a83e5fbc8724 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> @@ -52,7 +52,7 @@ void mtk_gamma_config(struct device *dev, unsigned
> int w,
>  		      unsigned int h, unsigned int vrefresh,
>  		      unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
>  void mtk_gamma_set(struct device *dev, struct drm_crtc_state
> *state);
> -void mtk_gamma_set_common(void __iomem *regs, struct drm_crtc_state
> *state, bool lut_diff);
> +void mtk_gamma_set_common(struct device *dev, void __iomem *regs,
> struct drm_crtc_state *state);

This function is called by both aal and gamma driver, so I would like
to pass struct device dev because priv data of aal and gamma are
different. Make this function command for both aal and gamma driver.

Regards,
CK

>  void mtk_gamma_start(struct device *dev);
>  void mtk_gamma_stop(struct device *dev);
>  
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> index bbd558a036ec..f54a6a618348 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> @@ -54,14 +54,19 @@ void mtk_gamma_clk_disable(struct device *dev)
>  	clk_disable_unprepare(gamma->clk);
>  }
>  
> -void mtk_gamma_set_common(void __iomem *regs, struct drm_crtc_state
> *state, bool lut_diff)
> +void mtk_gamma_set_common(struct device *dev, void __iomem *regs,
> struct drm_crtc_state *state)
>  {
> +	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
> +	bool lut_diff = false;
>  	unsigned int i, reg;
>  	struct drm_color_lut *lut;
>  	void __iomem *lut_base;
>  	u32 word;
>  	u32 diff[3] = {0};
>  
> +	if (gamma && gamma->data)
> +		lut_diff = gamma->data->lut_diff;
> +
>  	if (state->gamma_lut) {
>  		reg = readl(regs + DISP_GAMMA_CFG);
>  		reg = reg | GAMMA_LUT_EN;
> @@ -91,12 +96,8 @@ void mtk_gamma_set_common(void __iomem *regs,
> struct drm_crtc_state *state, bool
>  void mtk_gamma_set(struct device *dev, struct drm_crtc_state *state)
>  {
>  	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
> -	bool lut_diff = false;
> -
> -	if (gamma->data)
> -		lut_diff = gamma->data->lut_diff;
>  
> -	mtk_gamma_set_common(gamma->regs, state, lut_diff);
> +	mtk_gamma_set_common(dev, gamma->regs, state);
>  }
>  
>  void mtk_gamma_config(struct device *dev, unsigned int w,