RFC: [2.6 patch] saa7146 cleanups

From: Adrian Bunk
Date: Sun Nov 07 2004 - 13:01:10 EST

The patch below contains the following saa7146 cleanups:
- make needlessly global code static
- remove unused code

Please comment on this, especially if patches for in-kernel uses of
currently unused code are pending.


diffstat output:
drivers/media/common/saa7146_core.c | 22 ++--------------------
drivers/media/common/saa7146_fops.c | 11 -----------
drivers/media/common/saa7146_hlp.c | 21 ++-------------------
drivers/media/common/saa7146_i2c.c | 2 +-
drivers/media/common/saa7146_vbi.c | 2 +-
include/media/saa7146_vv.h | 3 ---
6 files changed, 6 insertions(+), 55 deletions(-)


Signed-off-by: Adrian Bunk <bunk@xxxxxxxxx>

--- linux-2.6.10-rc1-mm3-full/include/media/saa7146_vv.h.old 2004-11-07 18:36:50.000000000 +0100
+++ linux-2.6.10-rc1-mm3-full/include/media/saa7146_vv.h 2004-11-07 18:38:07.000000000 +0100
@@ -207,7 +207,6 @@
void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next);
void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma) ;
void saa7146_set_hps_source_and_sync(struct saa7146_dev *saa, int source, int sync);
-void saa7146_set_gpio(struct saa7146_dev *saa, u8 pin, u8 data);

/* from saa7146_video.c */
extern struct saa7146_use_ops saa7146_video_uops;
@@ -219,8 +218,6 @@

/* resource management functions */
int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit);
-int saa7146_res_check(struct saa7146_fh *fh, unsigned int bit);
-int saa7146_res_locked(struct saa7146_dev *dev, unsigned int bit);
void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits);

#define RESOURCE_DMA1_HPS 0x1
--- linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_core.c.old 2004-11-07 18:37:09.000000000 +0100
+++ linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_core.c 2004-11-07 18:37:31.000000000 +0100
@@ -25,7 +25,7 @@
struct semaphore saa7146_devices_lock;

static int initialized = 0;
-int saa7146_num = 0;
+static int saa7146_num = 0;

unsigned int saa7146_debug = 0;

@@ -45,27 +45,9 @@
#endif

/****************************************************************************
- * gpio and debi helper functions
+ * debi helper function
****************************************************************************/

-/* write "data" to the gpio-pin "pin" */
-void saa7146_set_gpio(struct saa7146_dev *dev, u8 pin, u8 data)
-{
- u32 value = 0;
-
- /* sanity check */
- if(pin > 3)
- return;
-
- /* read old register contents */
- value = saa7146_read(dev, GPIO_CTRL );
-
- value &= ~(0xff << (8*pin));
- value |= (data << (8*pin));
-
- saa7146_write(dev, GPIO_CTRL, value);
-}
-
/* This DEBI code is based on the saa7146 Stradis driver by Nathan Laredo */
int saa7146_wait_for_debi_done(struct saa7146_dev *dev)
{
--- linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_fops.c.old 2004-11-07 18:38:17.000000000 +0100
+++ linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_fops.c 2004-11-07 18:39:23.000000000 +0100
@@ -32,17 +32,6 @@
return 1;
}

-int saa7146_res_check(struct saa7146_fh *fh, unsigned int bit)
-{
- return (fh->resources & bit);
-}
-
-int saa7146_res_locked(struct saa7146_dev *dev, unsigned int bit)
-{
- struct saa7146_vv *vv = dev->vv_data;
- return (vv->resources & bit);
-}
-
void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits)
{
struct saa7146_dev *dev = fh->dev;
--- linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_hlp.c.old 2004-11-07 18:39:46.000000000 +0100
+++ linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_hlp.c 2004-11-07 18:45:20.000000000 +0100
@@ -9,11 +9,6 @@
*clip_format |= (( ((palette&0xf00)>>8) << 30) | ((palette&0x00f) << 24) | (((palette&0x0f0)>>4) << 16));
}

-static void calculate_bcs_ctrl_register(struct saa7146_dev *dev, int brightness, int contrast, int colour, u32 *bcs_ctrl)
-{
- *bcs_ctrl = ((brightness << 24) | (contrast << 16) | (colour << 0));
-}
-
static void calculate_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync, u32* hps_ctrl)
{
*hps_ctrl &= ~(MASK_30 | MASK_31 | MASK_28);
@@ -62,7 +57,7 @@
};

/* table of attenuation values for horizontal scaling */
-u8 h_attenuation[] = { 1, 2, 4, 8, 2, 4, 8, 16, 0};
+static u8 h_attenuation[] = { 1, 2, 4, 8, 2, 4, 8, 16, 0};

/* calculate horizontal scale registers */
static int calculate_h_scale_registers(struct saa7146_dev *dev,
@@ -208,7 +203,7 @@
};

/* table of attenuation values for vertical scaling */
-u16 v_attenuation[] = { 2, 4, 8, 16, 32, 64, 128, 256, 0};
+static u16 v_attenuation[] = { 2, 4, 8, 16, 32, 64, 128, 256, 0};

/* calculate vertical scale registers */
static int calculate_v_scale_registers(struct saa7146_dev *dev, enum v4l2_field field,
@@ -620,18 +615,6 @@
saa7146_write(dev, MC2, (MASK_05 | MASK_21));
}

-void saa7146_set_picture_prop(struct saa7146_dev *dev, int brightness, int contrast, int colour)
-{
- u32 bcs_ctrl = 0;
-
- calculate_bcs_ctrl_register(dev, brightness, contrast, colour, &bcs_ctrl);
- saa7146_write(dev, BCS_CTRL, bcs_ctrl);
-
- /* update the bcs register */
- saa7146_write(dev, MC2, (MASK_06 | MASK_22));
-}
-
-
/* select input-source */
void saa7146_set_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync)
{
--- linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_i2c.c.old 2004-11-07 18:40:26.000000000 +0100
+++ linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_i2c.c 2004-11-07 18:40:37.000000000 +0100
@@ -1,7 +1,7 @@
#include <linux/version.h>
#include <media/saa7146_vv.h>

-u32 saa7146_i2c_func(struct i2c_adapter *adapter)
+static u32 saa7146_i2c_func(struct i2c_adapter *adapter)
{
//fm DEB_I2C(("'%s'.\n", adapter->name));

--- linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_vbi.c.old 2004-11-07 18:41:12.000000000 +0100
+++ linux-2.6.10-rc1-mm3-full/drivers/media/common/saa7146_vbi.c 2004-11-07 18:41:20.000000000 +0100
@@ -130,7 +130,7 @@
return 0;
}

-void saa7146_set_vbi_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next)
+static void saa7146_set_vbi_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next)
{
struct saa7146_vv *vv = dev->vv_data;


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