[PATCH 06/12] media: fimc-is: constify several pointers in function arguments

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

Several functions do not modify pointed structure, thus the pointer can
point to const data for additional safety and self-documenting intention
of the function.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../media/platform/samsung/exynos4-is/fimc-core.c    |  6 +++---
 .../media/platform/samsung/exynos4-is/fimc-core.h    | 12 ++++++------
 drivers/media/platform/samsung/exynos4-is/fimc-reg.c | 10 +++++-----
 drivers/media/platform/samsung/exynos4-is/fimc-reg.h | 10 +++++-----
 4 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-core.c b/drivers/media/platform/samsung/exynos4-is/fimc-core.c
index ad72cc31dc45..13b04fda8716 100644
--- a/drivers/media/platform/samsung/exynos4-is/fimc-core.c
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-core.c
@@ -326,7 +326,7 @@ static irqreturn_t fimc_irq_handler(int irq, void *priv)
 
 /* The color format (colplanes, memplanes) must be already configured. */
 int fimc_prepare_addr(struct fimc_ctx *ctx, struct vb2_buffer *vb,
-		      struct fimc_frame *frame, struct fimc_addr *addr)
+		      const struct fimc_frame *frame, struct fimc_addr *addr)
 {
 	int ret = 0;
 	u32 pix_size;
@@ -670,7 +670,7 @@ void fimc_alpha_ctrl_update(struct fimc_ctx *ctx)
 	v4l2_ctrl_unlock(ctrl);
 }
 
-void __fimc_get_format(struct fimc_frame *frame, struct v4l2_format *f)
+void __fimc_get_format(const struct fimc_frame *frame, struct v4l2_format *f)
 {
 	struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
 	int i;
@@ -695,7 +695,7 @@ void __fimc_get_format(struct fimc_frame *frame, struct v4l2_format *f)
  * @height: requested pixel height
  * @pix: multi-plane format to adjust
  */
-void fimc_adjust_mplane_format(struct fimc_fmt *fmt, u32 width, u32 height,
+void fimc_adjust_mplane_format(const struct fimc_fmt *fmt, u32 width, u32 height,
 			       struct v4l2_pix_format_mplane *pix)
 {
 	u32 bytesperline = 0;
diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-core.h b/drivers/media/platform/samsung/exynos4-is/fimc-core.h
index cc840e6e07a9..261c9aac2f7f 100644
--- a/drivers/media/platform/samsung/exynos4-is/fimc-core.h
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-core.h
@@ -515,7 +515,7 @@ static inline void set_frame_crop(struct fimc_frame *f,
 	f->height = height;
 }
 
-static inline u32 fimc_get_format_depth(struct fimc_fmt *ff)
+static inline u32 fimc_get_format_depth(const struct fimc_fmt *ff)
 {
 	u32 i, depth = 0;
 
@@ -557,7 +557,7 @@ static inline bool fimc_ctx_state_is_set(u32 mask, struct fimc_ctx *ctx)
 	return ret;
 }
 
-static inline int tiled_fmt(struct fimc_fmt *fmt)
+static inline int tiled_fmt(const struct fimc_fmt *fmt)
 {
 	return fmt->fourcc == V4L2_PIX_FMT_NV12MT;
 }
@@ -575,7 +575,7 @@ static inline bool fimc_user_defined_mbus_fmt(u32 code)
 }
 
 /* Return the alpha component bit mask */
-static inline int fimc_get_alpha_mask(struct fimc_fmt *fmt)
+static inline int fimc_get_alpha_mask(const struct fimc_fmt *fmt)
 {
 	switch (fmt->color) {
 	case FIMC_FMT_RGB444:	return 0x0f;
@@ -614,8 +614,8 @@ int fimc_ctrls_create(struct fimc_ctx *ctx);
 void fimc_ctrls_delete(struct fimc_ctx *ctx);
 void fimc_ctrls_activate(struct fimc_ctx *ctx, bool active);
 void fimc_alpha_ctrl_update(struct fimc_ctx *ctx);
-void __fimc_get_format(struct fimc_frame *frame, struct v4l2_format *f);
-void fimc_adjust_mplane_format(struct fimc_fmt *fmt, u32 width, u32 height,
+void __fimc_get_format(const struct fimc_frame *frame, struct v4l2_format *f);
+void fimc_adjust_mplane_format(const struct fimc_fmt *fmt, u32 width, u32 height,
 			       struct v4l2_pix_format_mplane *pix);
 struct fimc_fmt *fimc_find_format(const u32 *pixelformat, const u32 *mbus_code,
 				  unsigned int mask, int index);
@@ -626,7 +626,7 @@ int fimc_check_scaler_ratio(struct fimc_ctx *ctx, int sw, int sh,
 int fimc_set_scaler_info(struct fimc_ctx *ctx);
 int fimc_prepare_config(struct fimc_ctx *ctx, u32 flags);
 int fimc_prepare_addr(struct fimc_ctx *ctx, struct vb2_buffer *vb,
-		      struct fimc_frame *frame, struct fimc_addr *addr);
+		      const struct fimc_frame *frame, struct fimc_addr *addr);
 void fimc_prepare_dma_offset(struct fimc_ctx *ctx, struct fimc_frame *f);
 void fimc_set_yuv_order(struct fimc_ctx *ctx);
 void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf);
diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-reg.c b/drivers/media/platform/samsung/exynos4-is/fimc-reg.c
index 95165a2cc7d1..f20fb74dd0c6 100644
--- a/drivers/media/platform/samsung/exynos4-is/fimc-reg.c
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-reg.c
@@ -526,7 +526,7 @@ void fimc_hw_set_output_path(struct fimc_ctx *ctx)
 	writel(cfg, dev->regs + FIMC_REG_CISCCTRL);
 }
 
-void fimc_hw_set_input_addr(struct fimc_dev *dev, struct fimc_addr *addr)
+void fimc_hw_set_input_addr(struct fimc_dev *dev, const struct fimc_addr *addr)
 {
 	u32 cfg = readl(dev->regs + FIMC_REG_CIREAL_ISIZE);
 	cfg |= FIMC_REG_CIREAL_ISIZE_ADDR_CH_DIS;
@@ -541,7 +541,7 @@ void fimc_hw_set_input_addr(struct fimc_dev *dev, struct fimc_addr *addr)
 }
 
 void fimc_hw_set_output_addr(struct fimc_dev *dev,
-			     struct fimc_addr *addr, int index)
+			     const struct fimc_addr *addr, int index)
 {
 	int i = (index == -1) ? 0 : index;
 	do {
@@ -554,7 +554,7 @@ void fimc_hw_set_output_addr(struct fimc_dev *dev,
 }
 
 int fimc_hw_set_camera_polarity(struct fimc_dev *fimc,
-				struct fimc_source_info *cam)
+				const struct fimc_source_info *cam)
 {
 	u32 cfg = readl(fimc->regs + FIMC_REG_CIGCTRL);
 
@@ -648,7 +648,7 @@ int fimc_hw_set_camera_source(struct fimc_dev *fimc,
 	return 0;
 }
 
-void fimc_hw_set_camera_offset(struct fimc_dev *fimc, struct fimc_frame *f)
+void fimc_hw_set_camera_offset(struct fimc_dev *fimc, const struct fimc_frame *f)
 {
 	u32 hoff2, voff2;
 
@@ -668,7 +668,7 @@ void fimc_hw_set_camera_offset(struct fimc_dev *fimc, struct fimc_frame *f)
 }
 
 int fimc_hw_set_camera_type(struct fimc_dev *fimc,
-			    struct fimc_source_info *source)
+			    const struct fimc_source_info *source)
 {
 	struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
 	u32 csis_data_alignment = 32;
diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-reg.h b/drivers/media/platform/samsung/exynos4-is/fimc-reg.h
index b9b33aa1f12f..9714f4309655 100644
--- a/drivers/media/platform/samsung/exynos4-is/fimc-reg.h
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-reg.h
@@ -302,16 +302,16 @@ void fimc_hw_set_rgb_alpha(struct fimc_ctx *ctx);
 void fimc_hw_set_in_dma(struct fimc_ctx *ctx);
 void fimc_hw_set_input_path(struct fimc_ctx *ctx);
 void fimc_hw_set_output_path(struct fimc_ctx *ctx);
-void fimc_hw_set_input_addr(struct fimc_dev *fimc, struct fimc_addr *addr);
-void fimc_hw_set_output_addr(struct fimc_dev *fimc, struct fimc_addr *addr,
+void fimc_hw_set_input_addr(struct fimc_dev *fimc, const struct fimc_addr *addr);
+void fimc_hw_set_output_addr(struct fimc_dev *fimc, const struct fimc_addr *addr,
 			     int index);
 int fimc_hw_set_camera_source(struct fimc_dev *fimc,
 			      struct fimc_source_info *cam);
-void fimc_hw_set_camera_offset(struct fimc_dev *fimc, struct fimc_frame *f);
+void fimc_hw_set_camera_offset(struct fimc_dev *fimc, const struct fimc_frame *f);
 int fimc_hw_set_camera_polarity(struct fimc_dev *fimc,
-				struct fimc_source_info *cam);
+				const struct fimc_source_info *cam);
 int fimc_hw_set_camera_type(struct fimc_dev *fimc,
-			    struct fimc_source_info *cam);
+			    const struct fimc_source_info *cam);
 void fimc_hw_clear_irq(struct fimc_dev *dev);
 void fimc_hw_enable_scaler(struct fimc_dev *dev, bool on);
 void fimc_hw_activate_input_dma(struct fimc_dev *dev, bool on);
-- 
2.34.1