media: fimc-lite: constify several pointers in function arguments

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>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c b/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c
index 57996b4104b46f59938fc71138bb3bf269e50a25..2483277a6cb0e1f0bb754bc90318aba0938d42c6 100644 (file)
--- a/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c
@@ -124,7 +124,7 @@ static const u32 src_pixfmt_map[8][3] = {
 };
 
 /* Set camera input pixel format and resolution */
-void flite_hw_set_source_format(struct fimc_lite *dev, struct flite_frame *f)
+void flite_hw_set_source_format(struct fimc_lite *dev, const struct flite_frame *f)
 {
        u32 pixelcode = f->fmt->mbus_code;
        int i = ARRAY_SIZE(src_pixfmt_map);
@@ -155,7 +155,7 @@ void flite_hw_set_source_format(struct fimc_lite *dev, struct flite_frame *f)
 }
 
 /* Set the camera host input window offsets (cropping) */
-void flite_hw_set_window_offset(struct fimc_lite *dev, struct flite_frame *f)
+void flite_hw_set_window_offset(struct fimc_lite *dev, const struct flite_frame *f)
 {
        u32 hoff2, voff2;
        u32 cfg;
@@ -186,7 +186,7 @@ static void flite_hw_set_camera_port(struct fimc_lite *dev, int id)
 
 /* Select serial or parallel bus, camera port (A,B) and set signals polarity */
 void flite_hw_set_camera_bus(struct fimc_lite *dev,
-                            struct fimc_source_info *si)
+                            const struct fimc_source_info *si)
 {
        u32 cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
        unsigned int flags = si->flags;
@@ -226,7 +226,8 @@ static void flite_hw_set_pack12(struct fimc_lite *dev, int on)
        writel(cfg, dev->regs + FLITE_REG_CIODMAFMT);
 }
 
-static void flite_hw_set_out_order(struct fimc_lite *dev, struct flite_frame *f)
+static void flite_hw_set_out_order(struct fimc_lite *dev,
+                                  const struct flite_frame *f)
 {
        static const u32 pixcode[4][2] = {
                { MEDIA_BUS_FMT_YUYV8_2X8, FLITE_REG_CIODMAFMT_YCBYCR },
@@ -244,7 +245,7 @@ static void flite_hw_set_out_order(struct fimc_lite *dev, struct flite_frame *f)
        writel(cfg | pixcode[i][1], dev->regs + FLITE_REG_CIODMAFMT);
 }
 
-void flite_hw_set_dma_window(struct fimc_lite *dev, struct flite_frame *f)
+void flite_hw_set_dma_window(struct fimc_lite *dev, const struct flite_frame *f)
 {
        u32 cfg;
 
@@ -294,7 +295,7 @@ void flite_hw_mask_dma_buffer(struct fimc_lite *dev, u32 index)
 }
 
 /* Enable/disable output DMA, set output pixel size and offsets (composition) */
-void flite_hw_set_output_dma(struct fimc_lite *dev, struct flite_frame *f,
+void flite_hw_set_output_dma(struct fimc_lite *dev, const struct flite_frame *f,
                             bool enable)
 {
        u32 cfg = readl(dev->regs + FLITE_REG_CIGCTRL);

diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.h b/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.h
index 3b8af3ce183823907f31958c7bd17546c2a82ad3..c5ec36dfb2f9f6baf42f631ed616afe0de6d3268 100644 (file)
--- a/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.h
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.h
@@ -133,13 +133,13 @@ void flite_hw_set_interrupt_mask(struct fimc_lite *dev);
 void flite_hw_capture_start(struct fimc_lite *dev);
 void flite_hw_capture_stop(struct fimc_lite *dev);
 void flite_hw_set_camera_bus(struct fimc_lite *dev,
-                            struct fimc_source_info *s_info);
-void flite_hw_set_window_offset(struct fimc_lite *dev, struct flite_frame *f);
-void flite_hw_set_source_format(struct fimc_lite *dev, struct flite_frame *f);
+                            const struct fimc_source_info *s_info);
+void flite_hw_set_window_offset(struct fimc_lite *dev, const struct flite_frame *f);
+void flite_hw_set_source_format(struct fimc_lite *dev, const struct flite_frame *f);
 
-void flite_hw_set_output_dma(struct fimc_lite *dev, struct flite_frame *f,
+void flite_hw_set_output_dma(struct fimc_lite *dev, const struct flite_frame *f,
                             bool enable);
-void flite_hw_set_dma_window(struct fimc_lite *dev, struct flite_frame *f);
+void flite_hw_set_dma_window(struct fimc_lite *dev, const struct flite_frame *f);
 void flite_hw_set_test_pattern(struct fimc_lite *dev, bool on);
 void flite_hw_dump_regs(struct fimc_lite *dev, const char *label);
 void flite_hw_set_dma_buffer(struct fimc_lite *dev, struct flite_buffer *buf);