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From: Neil Armstrong <narmstrong@baylibre.com>
To: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
	dri-devel@lists.freedesktop.org
Cc: "Jernej Skrabec" <jernej.skrabec@siol.net>,
	"Heiko Stübner" <heiko@sntech.de>,
	"Jonas Karlman" <jonas@kwiboo.se>,
	"Kieran Bingham" <kieran.bingham@ideasonboard.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Sandy Huang" <hjc@rock-chips.com>,
	linux-renesas-soc@vger.kernel.org,
	"Andrzej Hajda" <a.hajda@samsung.com>,
	"Chen-Yu Tsai" <wens@csie.org>,
	linux-amlogic@lists.infradead.org,
	"Sam Ravnborg" <sam@ravnborg.org>
Subject: Re: [PATCH 16/27] drm: bridge: dw-hdmi: Constify mode argument to dw_hdmi_phy_ops .init()
Date: Tue, 26 May 2020 11:46:41 +0200	[thread overview]
Message-ID: <96ba8829-74e6-0a4e-2840-7bd8b113dbf3@baylibre.com> (raw)
In-Reply-To: <20200526011505.31884-17-laurent.pinchart+renesas@ideasonboard.com>

On 26/05/2020 03:14, Laurent Pinchart wrote:
> The PHY .init() must not modify the mode it receives. Make the pointer
> const to enfore that.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> ---
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c   | 2 +-
>  drivers/gpu/drm/meson/meson_dw_hdmi.c       | 4 ++--
>  drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 2 +-
>  drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c      | 2 +-
>  include/drm/bridge/dw_hdmi.h                | 2 +-
>  5 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 23650e69604c..6e6a3d95e68e 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -1531,7 +1531,7 @@ static int hdmi_phy_configure(struct dw_hdmi *hdmi)
>  }
>  
>  static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data,
> -			    struct drm_display_mode *mode)
> +			    const struct drm_display_mode *mode)
>  {
>  	int i, ret;
>  
> diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> index 71d599970ec7..757c17fbb29f 100644
> --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
> +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> @@ -297,7 +297,7 @@ static inline void dw_hdmi_dwc_write_bits(struct meson_dw_hdmi *dw_hdmi,
>  
>  /* Setup PHY bandwidth modes */
>  static void meson_hdmi_phy_setup_mode(struct meson_dw_hdmi *dw_hdmi,
> -				      struct drm_display_mode *mode)
> +				      const struct drm_display_mode *mode)
>  {
>  	struct meson_drm *priv = dw_hdmi->priv;
>  	unsigned int pixel_clock = mode->clock;
> @@ -427,7 +427,7 @@ static void dw_hdmi_set_vclk(struct meson_dw_hdmi *dw_hdmi,
>  }
>  
>  static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data,
> -			    struct drm_display_mode *mode)
> +			    const struct drm_display_mode *mode)
>  {
>  	struct meson_dw_hdmi *dw_hdmi = (struct meson_dw_hdmi *)data;
>  	struct meson_drm *priv = dw_hdmi->priv;
> diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
> index d286751bb333..10e210f6455d 100644
> --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
> @@ -312,7 +312,7 @@ static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_fun
>  };
>  
>  static int dw_hdmi_rockchip_genphy_init(struct dw_hdmi *dw_hdmi, void *data,
> -			     struct drm_display_mode *mode)
> +					const struct drm_display_mode *mode)
>  {
>  	struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
>  
> diff --git a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
> index 43643ad31730..8e078cacf063 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
> @@ -341,7 +341,7 @@ static int sun8i_hdmi_phy_config_h3(struct dw_hdmi *hdmi,
>  }
>  
>  static int sun8i_hdmi_phy_config(struct dw_hdmi *hdmi, void *data,
> -				 struct drm_display_mode *mode)
> +				 const struct drm_display_mode *mode)
>  {
>  	struct sun8i_hdmi_phy *phy = (struct sun8i_hdmi_phy *)data;
>  	u32 val = 0;
> diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
> index fec293b21c2e..f930d218cc6b 100644
> --- a/include/drm/bridge/dw_hdmi.h
> +++ b/include/drm/bridge/dw_hdmi.h
> @@ -114,7 +114,7 @@ struct dw_hdmi_phy_config {
>  
>  struct dw_hdmi_phy_ops {
>  	int (*init)(struct dw_hdmi *hdmi, void *data,
> -		    struct drm_display_mode *mode);
> +		    const struct drm_display_mode *mode);
>  	void (*disable)(struct dw_hdmi *hdmi, void *data);
>  	enum drm_connector_status (*read_hpd)(struct dw_hdmi *hdmi, void *data);
>  	void (*update_hpd)(struct dw_hdmi *hdmi, void *data,
> 

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>

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  reply	other threads:[~2020-05-26  9:46 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200526011505.31884-1-laurent.pinchart+renesas@ideasonboard.com>
2020-05-26  1:14 ` [PATCH 11/27] drm: bridge: dw-hdmi: Pass private data pointer to .mode_valid() Laurent Pinchart
2020-05-26  9:44   ` Neil Armstrong
2020-05-26  1:14 ` [PATCH 14/27] drm: meson: dw-hdmi: Use dw_hdmi context to replace hack Laurent Pinchart
2020-05-26 12:32   ` Neil Armstrong
2020-05-26  1:14 ` [PATCH 15/27] drm: bridge: dw-hdmi: Pass drm_display_info to .mode_valid() Laurent Pinchart
2020-05-26  9:46   ` Neil Armstrong
2020-05-26  1:14 ` [PATCH 16/27] drm: bridge: dw-hdmi: Constify mode argument to dw_hdmi_phy_ops .init() Laurent Pinchart
2020-05-26  9:46   ` Neil Armstrong [this message]
2020-05-26  1:14 ` [PATCH 18/27] drm: bridge: dw-hdmi: Pass drm_display_info to dw_hdmi_support_scdc() Laurent Pinchart
2020-05-26  9:48   ` Neil Armstrong

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