[PATCH v2 18/22] drm/omap: hdmi: Constify video mode and related pointers

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Constify many pointers to struct videomode, as well as pointers to
container structures, to ensure the video mode isn't modified after
the .check_timings() operation.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
---
 drivers/gpu/drm/omapdrm/dss/hdmi.h       | 8 ++++----
 drivers/gpu/drm/omapdrm/dss/hdmi4.c      | 2 +-
 drivers/gpu/drm/omapdrm/dss/hdmi5.c      | 2 +-
 drivers/gpu/drm/omapdrm/dss/hdmi5_core.c | 6 +++---
 drivers/gpu/drm/omapdrm/dss/hdmi_wp.c    | 8 ++++----
 5 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi.h b/drivers/gpu/drm/omapdrm/dss/hdmi.h
index 3aeb4cabd59f..7f0dc490a31d 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi.h
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi.h
@@ -313,13 +313,13 @@ void hdmi_wp_clear_irqenable(struct hdmi_wp_data *wp, u32 mask);
 int hdmi_wp_set_phy_pwr(struct hdmi_wp_data *wp, enum hdmi_phy_pwr val);
 int hdmi_wp_set_pll_pwr(struct hdmi_wp_data *wp, enum hdmi_pll_pwr val);
 void hdmi_wp_video_config_format(struct hdmi_wp_data *wp,
-		struct hdmi_video_format *video_fmt);
+		const struct hdmi_video_format *video_fmt);
 void hdmi_wp_video_config_interface(struct hdmi_wp_data *wp,
-		struct videomode *vm);
+		const struct videomode *vm);
 void hdmi_wp_video_config_timing(struct hdmi_wp_data *wp,
-		struct videomode *vm);
+		const struct videomode *vm);
 void hdmi_wp_init_vid_fmt_timings(struct hdmi_video_format *video_fmt,
-		struct videomode *vm, struct hdmi_config *param);
+		struct videomode *vm, const struct hdmi_config *param);
 int hdmi_wp_init(struct platform_device *pdev, struct hdmi_wp_data *wp,
 		 unsigned int version);
 phys_addr_t hdmi_wp_get_audio_dma_addr(struct hdmi_wp_data *wp);
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
index 3e2bc85ef538..7ad173098c22 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
@@ -154,7 +154,7 @@ static void hdmi_power_off_core(struct omap_hdmi *hdmi)
 static int hdmi_power_on_full(struct omap_hdmi *hdmi)
 {
 	int r;
-	struct videomode *vm;
+	const struct videomode *vm;
 	struct hdmi_wp_data *wp = &hdmi->wp;
 	struct dss_pll_clock_info hdmi_cinfo = { 0 };
 	unsigned int pc;
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
index c02e08299155..147c3550df51 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
@@ -153,7 +153,7 @@ static void hdmi_power_off_core(struct omap_hdmi *hdmi)
 static int hdmi_power_on_full(struct omap_hdmi *hdmi)
 {
 	int r;
-	struct videomode *vm;
+	const struct videomode *vm;
 	struct dss_pll_clock_info hdmi_cinfo = { 0 };
 	unsigned int pc;
 
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5_core.c b/drivers/gpu/drm/omapdrm/dss/hdmi5_core.c
index 2282e48574c6..02efabc7ed76 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi5_core.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi5_core.c
@@ -287,7 +287,7 @@ void hdmi5_core_dump(struct hdmi_core_data *core, struct seq_file *s)
 }
 
 static void hdmi_core_init(struct hdmi_core_vid_config *video_cfg,
-			struct hdmi_config *cfg)
+			   const struct hdmi_config *cfg)
 {
 	DSSDBG("hdmi_core_init\n");
 
@@ -325,10 +325,10 @@ static void hdmi_core_init(struct hdmi_core_vid_config *video_cfg,
 
 /* DSS_HDMI_CORE_VIDEO_CONFIG */
 static void hdmi_core_video_config(struct hdmi_core_data *core,
-			struct hdmi_core_vid_config *cfg)
+			const struct hdmi_core_vid_config *cfg)
 {
 	void __iomem *base = core->base;
-	struct videomode *vm = &cfg->v_fc_config.vm;
+	const struct videomode *vm = &cfg->v_fc_config.vm;
 	unsigned char r = 0;
 	bool vsync_pol, hsync_pol;
 
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi_wp.c b/drivers/gpu/drm/omapdrm/dss/hdmi_wp.c
index 53bc5f78050c..100efb9f08c6 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi_wp.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi_wp.c
@@ -131,7 +131,7 @@ void hdmi_wp_video_stop(struct hdmi_wp_data *wp)
 }
 
 void hdmi_wp_video_config_format(struct hdmi_wp_data *wp,
-		struct hdmi_video_format *video_fmt)
+		const struct hdmi_video_format *video_fmt)
 {
 	u32 l = 0;
 
@@ -144,7 +144,7 @@ void hdmi_wp_video_config_format(struct hdmi_wp_data *wp,
 }
 
 void hdmi_wp_video_config_interface(struct hdmi_wp_data *wp,
-				    struct videomode *vm)
+				    const struct videomode *vm)
 {
 	u32 r;
 	bool vsync_inv, hsync_inv;
@@ -164,7 +164,7 @@ void hdmi_wp_video_config_interface(struct hdmi_wp_data *wp,
 }
 
 void hdmi_wp_video_config_timing(struct hdmi_wp_data *wp,
-				 struct videomode *vm)
+				 const struct videomode *vm)
 {
 	u32 timing_h = 0;
 	u32 timing_v = 0;
@@ -193,7 +193,7 @@ void hdmi_wp_video_config_timing(struct hdmi_wp_data *wp,
 }
 
 void hdmi_wp_init_vid_fmt_timings(struct hdmi_video_format *video_fmt,
-		struct videomode *vm, struct hdmi_config *param)
+		struct videomode *vm, const struct hdmi_config *param)
 {
 	DSSDBG("Enter hdmi_wp_video_init_format\n");
 
-- 
Regards,

Laurent Pinchart

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