video: ipu: prevent warnings with W=1

- make local functions static
- remove unused is_interlaced function

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

drivers/video/ipu_common.c

@@ -379,7 +379,7 @@ static struct clk pixel_clk[] = {
 /*
  * This function resets IPU
  */
-void ipu_reset(void)
+static void ipu_reset(void)
 {
 	u32 *reg;
 	u32 value;

drivers/video/ipu_disp.c

@@ -377,7 +377,7 @@ static struct dp_csc_param_t dp_csc_array[CSC_NUM][CSC_NUM] = {
 static enum csc_type_t fg_csc_type = CSC_NONE, bg_csc_type = CSC_NONE;
 static int color_key_4rgb = 1;
 
-void ipu_dp_csc_setup(int dp, struct dp_csc_param_t dp_csc_param,
+static void ipu_dp_csc_setup(int dp, struct dp_csc_param_t dp_csc_param,
 			unsigned char srm_mode_update)
 {
 	u32 reg;
@@ -605,17 +605,6 @@ void ipu_dc_uninit(int dc_chan)
 	}
 }
 
-int ipu_chan_is_interlaced(ipu_channel_t channel)
-{
-	if (channel == MEM_DC_SYNC)
-		return !!(__raw_readl(DC_WR_CH_CONF_1) &
-			  DC_WR_CH_CONF_FIELD_MODE);
-	else if ((channel == MEM_BG_SYNC) || (channel == MEM_FG_SYNC))
-		return !!(__raw_readl(DC_WR_CH_CONF_5) &
-			  DC_WR_CH_CONF_FIELD_MODE);
-	return 0;
-}
-
 void ipu_dp_dc_enable(ipu_channel_t channel)
 {
 	int di;
@@ -782,7 +771,7 @@ void ipu_init_dc_mappings(void)
 	ipu_dc_map_config(4, 2, 21, 0xFC);
 }
 
-int ipu_pixfmt_to_map(uint32_t fmt)
+static int ipu_pixfmt_to_map(uint32_t fmt)
 {
 	switch (fmt) {
 	case IPU_PIX_FMT_GENERIC:

drivers/video/mxc_ipuv3_fb.c

@@ -36,7 +36,7 @@ static struct fb_videomode const *gmode;
 static uint8_t gdisp;
 static uint32_t gpixfmt;
 
-void fb_videomode_to_var(struct fb_var_screeninfo *var,
+static void fb_videomode_to_var(struct fb_var_screeninfo *var,
 			 const struct fb_videomode *mode)
 {
 	var->xres = mode->xres;