diff mbox series

[v4,04/80] drm/omap: constify write buffers

Message ID 20201124124538.660710-5-tomi.valkeinen@ti.com (mailing list archive)
State New, archived
Headers show
Series Convert DSI code to use drm_mipi_dsi and drm_panel | expand

Commit Message

Tomi Valkeinen Nov. 24, 2020, 12:44 p.m. UTC 
From: Sebastian Reichel <sebastian.reichel@collabora.com>

The write buffers are not modified, so they can be constant.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/gpu/drm/omapdrm/dss/dsi.c     | 24 ++++++++++++------------
 drivers/gpu/drm/omapdrm/dss/omapdss.h | 10 +++++-----
 2 files changed, 17 insertions(+), 17 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
index 86b9d435fb94..22d74d762a10 100644
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -2601,11 +2601,11 @@  static inline void dsi_vc_write_long_payload(struct dsi_data *dsi, int channel,
 }
 
 static int dsi_vc_send_long(struct dsi_data *dsi, int channel, u8 data_type,
-			    u8 *data, u16 len, u8 ecc)
+			    const u8 *data, u16 len, u8 ecc)
 {
 	/*u32 val; */
 	int i;
-	u8 *p;
+	const u8 *p;
 	int r = 0;
 	u8 b1, b2, b3, b4;
 
@@ -2698,7 +2698,7 @@  static int dsi_vc_send_null(struct dsi_data *dsi, int channel)
 }
 
 static int dsi_vc_write_nosync_common(struct dsi_data *dsi, int channel,
-				      u8 *data, int len,
+				      const u8 *data, int len,
 				      enum dss_dsi_content_type type)
 {
 	int r;
@@ -2729,7 +2729,7 @@  static int dsi_vc_write_nosync_common(struct dsi_data *dsi, int channel,
 }
 
 static int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel,
-		u8 *data, int len)
+		const u8 *data, int len)
 {
 	struct dsi_data *dsi = to_dsi_data(dssdev);
 
@@ -2738,7 +2738,7 @@  static int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel,
 }
 
 static int dsi_vc_generic_write_nosync(struct omap_dss_device *dssdev, int channel,
-		u8 *data, int len)
+		const u8 *data, int len)
 {
 	struct dsi_data *dsi = to_dsi_data(dssdev);
 
@@ -2747,7 +2747,7 @@  static int dsi_vc_generic_write_nosync(struct omap_dss_device *dssdev, int chann
 }
 
 static int dsi_vc_write_common(struct omap_dss_device *dssdev,
-			       int channel, u8 *data, int len,
+			       int channel, const u8 *data, int len,
 			       enum dss_dsi_content_type type)
 {
 	struct dsi_data *dsi = to_dsi_data(dssdev);
@@ -2776,15 +2776,15 @@  static int dsi_vc_write_common(struct omap_dss_device *dssdev,
 	return r;
 }
 
-static int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data,
-		int len)
+static int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel,
+		const u8 *data, int len)
 {
 	return dsi_vc_write_common(dssdev, channel, data, len,
 			DSS_DSI_CONTENT_DCS);
 }
 
-static int dsi_vc_generic_write(struct omap_dss_device *dssdev, int channel, u8 *data,
-		int len)
+static int dsi_vc_generic_write(struct omap_dss_device *dssdev, int channel,
+		const u8 *data, int len)
 {
 	return dsi_vc_write_common(dssdev, channel, data, len,
 			DSS_DSI_CONTENT_GENERIC);
@@ -2810,7 +2810,7 @@  static int dsi_vc_dcs_send_read_request(struct dsi_data *dsi, int channel,
 }
 
 static int dsi_vc_generic_send_read_request(struct dsi_data *dsi, int channel,
-					    u8 *reqdata, int reqlen)
+					    const u8 *reqdata, int reqlen)
 {
 	u16 data;
 	u8 data_type;
@@ -2983,7 +2983,7 @@  static int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_c
 }
 
 static int dsi_vc_generic_read(struct omap_dss_device *dssdev, int channel,
-		u8 *reqdata, int reqlen, u8 *buf, int buflen)
+		const u8 *reqdata, int reqlen, u8 *buf, int buflen)
 {
 	struct dsi_data *dsi = to_dsi_data(dssdev);
 	int r;
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index c4bc1f919ab4..8e96ab2f20b6 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -309,18 +309,18 @@  struct omapdss_dsi_ops {
 
 	/* data transfer */
 	int (*dcs_write)(struct omap_dss_device *dssdev, int channel,
-			u8 *data, int len);
+			const u8 *data, int len);
 	int (*dcs_write_nosync)(struct omap_dss_device *dssdev, int channel,
-			u8 *data, int len);
+			const u8 *data, int len);
 	int (*dcs_read)(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
 			u8 *data, int len);
 
 	int (*gen_write)(struct omap_dss_device *dssdev, int channel,
-			u8 *data, int len);
+			const u8 *data, int len);
 	int (*gen_write_nosync)(struct omap_dss_device *dssdev, int channel,
-			u8 *data, int len);
+			const u8 *data, int len);
 	int (*gen_read)(struct omap_dss_device *dssdev, int channel,
-			u8 *reqdata, int reqlen,
+			const u8 *reqdata, int reqlen,
 			u8 *data, int len);
 
 	int (*bta_sync)(struct omap_dss_device *dssdev, int channel);