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V4L/DVB (9206): saa7114: convert i2c driver for new i2c API 

- Convert to use v4l2-i2c-drv-legacy.h to be able to handle the new i2c API
- Cleanups
- Use v4l_dbg/v4l_info to have uniform kernel messages

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2008-09-07 08:01:05 -03:00 committed by Mauro Carvalho Chehab
parent 4e1a04d900
commit b3286f6f52
1 changed files with 109 additions and 257 deletions
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366
drivers/media/video/saa7114.c
View File

@ -29,43 +29,24 @@
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/signal.h>
#include <linux/types.h>
#include <linux/i2c.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev.h>
#include <linux/video_decoder.h>
#include <media/v4l2-common.h>
#include <media/v4l2-i2c-drv-legacy.h>
MODULE_DESCRIPTION("Philips SAA7114H video decoder driver");
MODULE_AUTHOR("Maxim Yevtyushkin");
MODULE_LICENSE("GPL");
#define I2C_NAME(x) (x)->name
static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
#define dprintk(num, format, args...) \
do { \
if (debug >= num) \
printk(format, ##args); \
} while (0)
/* ----------------------------------------------------------------------- */
struct saa7114 {
@ -81,9 +62,6 @@ struct saa7114 {
int playback;
};
#define I2C_SAA7114 0x42
#define I2C_SAA7114A 0x40
#define I2C_DELAY 10
@ -129,18 +107,12 @@ struct saa7114 {
/* ----------------------------------------------------------------------- */
static inline int
saa7114_write (struct i2c_client *client,
u8 reg,
u8 value)
static inline int saa7114_write(struct i2c_client *client, u8 reg, u8 value)
{
return i2c_smbus_write_byte_data(client, reg, value);
}
static int
saa7114_write_block (struct i2c_client *client,
const u8 *data,
unsigned int len)
static int saa7114_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
{
int ret = -1;
u8 reg;
@ -160,18 +132,17 @@ saa7114_write_block (struct i2c_client *client,
reg++;
len -= 2;
data += 2;
} while (len >= 2 && data[0] == reg &&
block_len < 32);
if ((ret = i2c_master_send(client, block_data,
block_len)) < 0)
} while (len >= 2 && data[0] == reg && block_len < 32);
ret = i2c_master_send(client, block_data, block_len);
if (ret < 0)
break;
}
} else {
/* do some slow I2C emulation kind of thing */
while (len >= 2) {
reg = *data++;
if ((ret = saa7114_write(client, reg,
*data++)) < 0)
ret = saa7114_write(client, reg, *data++);
if (ret < 0)
break;
len -= 2;
}
@ -180,9 +151,7 @@ saa7114_write_block (struct i2c_client *client,
return ret;
}
static inline int
saa7114_read (struct i2c_client *client,
u8 reg)
static inline int saa7114_read(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
@ -452,15 +421,11 @@ static const unsigned char init[] = {
0xef, 0x00
};
static int
saa7114_command (struct i2c_client *client,
unsigned int cmd,
void *arg)
static int saa7114_command(struct i2c_client *client, unsigned cmd, void *arg)
{
struct saa7114 *decoder = i2c_get_clientdata(client);
switch (cmd) {
case 0:
//dprintk(1, KERN_INFO "%s: writing init\n", I2C_NAME(client));
//saa7114_write_block(client, init, sizeof(init));
@ -470,27 +435,28 @@ saa7114_command (struct i2c_client *client,
{
int i;
dprintk(1, KERN_INFO "%s: decoder dump\n", I2C_NAME(client));
if (!debug)
break;
v4l_info(client, "decoder dump\n");
for (i = 0; i < 32; i += 16) {
int j;
printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
v4l_info(client, "%03x", i);
for (j = 0; j < 16; ++j) {
printk(" %02x",
printk(KERN_CONT " %02x",
saa7114_read(client, i + j));
}
printk("\n");
printk(KERN_CONT "\n");
}
}
break;
}
case DECODER_GET_CAPABILITIES:
{
struct video_decoder_capability *cap = arg;
dprintk(1, KERN_DEBUG "%s: decoder get capabilities\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "get capabilities\n");
cap->flags = VIDEO_DECODER_PAL |
VIDEO_DECODER_NTSC |
@ -498,8 +464,8 @@ saa7114_command (struct i2c_client *client,
VIDEO_DECODER_CCIR;
cap->inputs = 8;
cap->outputs = 1;
}
break;
}
case DECODER_GET_STATUS:
{
@ -509,8 +475,7 @@ saa7114_command (struct i2c_client *client,
status = saa7114_read(client, 0x1f);
dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
status);
v4l_dbg(1, debug, client, "status: 0x%02x\n", status);
res = 0;
if ((status & (1 << 6)) == 0) {
res |= DECODER_STATUS_GOOD;
@ -538,8 +503,8 @@ saa7114_command (struct i2c_client *client,
res |= DECODER_STATUS_COLOR;
}
*iarg = res;
}
break;
}
case DECODER_SET_NORM:
{
@ -547,12 +512,11 @@ saa7114_command (struct i2c_client *client,
short int hoff = 0, voff = 0, w = 0, h = 0;
dprintk(1, KERN_DEBUG "%s: decoder set norm ",
I2C_NAME(client));
switch (*iarg) {
v4l_dbg(1, debug, client, "set norm\n");
switch (*iarg) {
case VIDEO_MODE_NTSC:
dprintk(1, "NTSC\n");
v4l_dbg(1, debug, client, "NTSC\n");
decoder->reg[REG_ADDR(0x06)] =
SAA_7114_NTSC_HSYNC_START;
decoder->reg[REG_ADDR(0x07)] =
@ -571,7 +535,7 @@ saa7114_command (struct i2c_client *client,
break;
case VIDEO_MODE_PAL:
dprintk(1, "PAL\n");
v4l_dbg(1, debug, client, "PAL\n");
decoder->reg[REG_ADDR(0x06)] =
SAA_7114_PAL_HSYNC_START;
decoder->reg[REG_ADDR(0x07)] =
@ -590,9 +554,8 @@ saa7114_command (struct i2c_client *client,
break;
default:
dprintk(1, " Unknown video mode!!!\n");
v4l_dbg(1, debug, client, "Unknown video mode\n");
return -EINVAL;
}
@ -644,22 +607,20 @@ saa7114_command (struct i2c_client *client,
saa7114_write(client, 0x80, 0x36); // i-port and scaler back end clock selection
decoder->norm = *iarg;
}
break;
}
case DECODER_SET_INPUT:
{
int *iarg = arg;
dprintk(1, KERN_DEBUG "%s: decoder set input (%d)\n",
I2C_NAME(client), *iarg);
v4l_dbg(1, debug, client, "set input (%d)\n", *iarg);
if (*iarg < 0 || *iarg > 7) {
return -EINVAL;
}
if (decoder->input != *iarg) {
dprintk(1, KERN_DEBUG "%s: now setting %s input\n",
I2C_NAME(client),
v4l_dbg(1, debug, client, "now setting %s input\n",
*iarg >= 6 ? "S-Video" : "Composite");
decoder->input = *iarg;
@ -690,30 +651,29 @@ saa7114_command (struct i2c_client *client,
saa7114_write(client, 0x0e,
decoder->reg[REG_ADDR(0x0e)]);
}
}
break;
}
case DECODER_SET_OUTPUT:
{
int *iarg = arg;
dprintk(1, KERN_DEBUG "%s: decoder set output\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "set output\n");
/* not much choice of outputs */
if (*iarg != 0) {
return -EINVAL;
}
}
break;
}
case DECODER_ENABLE_OUTPUT:
{
int *iarg = arg;
int enable = (*iarg != 0);
dprintk(1, KERN_DEBUG "%s: decoder %s output\n",
I2C_NAME(client), enable ? "enable" : "disable");
v4l_dbg(1, debug, client, "%s output\n",
enable ? "enable" : "disable");
decoder->playback = !enable;
@ -754,18 +714,16 @@ saa7114_command (struct i2c_client *client,
saa7114_write(client, 0x80, 0x36);
}
}
break;
}
case DECODER_SET_PICTURE:
{
struct video_picture *pic = arg;
dprintk(1,
KERN_DEBUG
"%s: decoder set picture bright=%d contrast=%d saturation=%d hue=%d\n",
I2C_NAME(client), pic->brightness, pic->contrast,
pic->colour, pic->hue);
v4l_dbg(1, debug, client,
"decoder set picture bright=%d contrast=%d saturation=%d hue=%d\n",
pic->brightness, pic->contrast, pic->colour, pic->hue);
if (decoder->bright != pic->brightness) {
/* We want 0 to 255 we get 0-65535 */
@ -789,8 +747,8 @@ saa7114_command (struct i2c_client *client,
saa7114_write(client, 0x0d,
(decoder->hue - 32768) >> 8);
}
}
break;
}
default:
return -EINVAL;
@ -801,58 +759,30 @@ saa7114_command (struct i2c_client *client,
/* ----------------------------------------------------------------------- */
/*
* Generic i2c probe
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
*/
static unsigned short normal_i2c[] =
{ I2C_SAA7114 >> 1, I2C_SAA7114A >> 1, I2C_CLIENT_END };
static unsigned short normal_i2c[] = { 0x42 >> 1, 0x40 >> 1, I2C_CLIENT_END };
static unsigned short ignore = I2C_CLIENT_END;
I2C_CLIENT_INSMOD;
static struct i2c_client_address_data addr_data = {
.normal_i2c = normal_i2c,
.probe = &ignore,
.ignore = &ignore,
};
static struct i2c_driver i2c_driver_saa7114;
static int
saa7114_detect_client (struct i2c_adapter *adapter,
int address,
int kind)
static int saa7114_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int i, err[30];
short int hoff = SAA_7114_NTSC_HOFFSET;
short int voff = SAA_7114_NTSC_VOFFSET;
short int w = SAA_7114_NTSC_WIDTH;
short int h = SAA_7114_NTSC_HEIGHT;
struct i2c_client *client;
struct saa7114 *decoder;
dprintk(1,
KERN_INFO
"saa7114.c: detecting saa7114 client on address 0x%x\n",
address << 1);
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return 0;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (!client)
return -ENOMEM;
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver_saa7114;
strlcpy(I2C_NAME(client), "saa7114", sizeof(I2C_NAME(client)));
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
decoder = kzalloc(sizeof(struct saa7114), GFP_KERNEL);
if (decoder == NULL) {
kfree(client);
if (decoder == NULL)
return -ENOMEM;
}
decoder->norm = VIDEO_MODE_NTSC;
decoder->input = -1;
decoder->enable = 1;
@ -937,8 +867,7 @@ saa7114_detect_client (struct i2c_adapter *adapter,
decoder->reg[REG_ADDR(0x0e)] |= 1; // combfilter on
dprintk(1, KERN_DEBUG "%s_attach: starting decoder init\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "starting init\n");
err[0] =
saa7114_write_block(client, decoder->reg + (0x20 << 1),
@ -962,28 +891,23 @@ saa7114_detect_client (struct i2c_adapter *adapter,
for (i = 0; i <= 5; i++) {
if (err[i] < 0) {
dprintk(1,
KERN_ERR
"%s_attach: init error %d at stage %d, leaving attach.\n",
I2C_NAME(client), i, err[i]);
v4l_dbg(1, debug, client,
"init error %d at stage %d, leaving attach.\n",
i, err[i]);
kfree(decoder);
kfree(client);
return 0;
return -EIO;
}
}
for (i = 6; i < 8; i++) {
dprintk(1,
KERN_DEBUG
"%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
I2C_NAME(client), i, saa7114_read(client, i),
v4l_dbg(1, debug, client,
"reg[0x%02x] = 0x%02x (0x%02x)\n",
i, saa7114_read(client, i),
decoder->reg[REG_ADDR(i)]);
}
dprintk(1,
KERN_DEBUG
"%s_attach: performing decoder reset sequence\n",
I2C_NAME(client));
v4l_dbg(1, debug, client,
"performing decoder reset sequence\n");
err[6] = saa7114_write(client, 0x80, 0x06); // i-port and scaler backend clock selection, task A&B off
err[7] = saa7114_write(client, 0x88, 0xd8); // sw reset scaler
@ -991,19 +915,15 @@ saa7114_detect_client (struct i2c_adapter *adapter,
for (i = 6; i <= 8; i++) {
if (err[i] < 0) {
dprintk(1,
KERN_ERR
"%s_attach: init error %d at stage %d, leaving attach.\n",
I2C_NAME(client), i, err[i]);
v4l_dbg(1, debug, client,
"init error %d at stage %d, leaving attach.\n",
i, err[i]);
kfree(decoder);
kfree(client);
return 0;
return -EIO;
}
}
dprintk(1, KERN_INFO "%s_attach: performing the rest of init\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "performing the rest of init\n");
err[9] = saa7114_write(client, 0x01, decoder->reg[REG_ADDR(0x01)]);
err[10] = saa7114_write_block(client, decoder->reg + (0x03 << 1), (0x1e + 1 - 0x03) << 1); // big seq
@ -1039,37 +959,32 @@ saa7114_detect_client (struct i2c_adapter *adapter,
for (i = 9; i <= 18; i++) {
if (err[i] < 0) {
dprintk(1,
KERN_ERR
"%s_attach: init error %d at stage %d, leaving attach.\n",
I2C_NAME(client), i, err[i]);
v4l_dbg(1, debug, client,
"init error %d at stage %d, leaving attach.\n",
i, err[i]);
kfree(decoder);
kfree(client);
return 0;
return -EIO;
}
}
for (i = 6; i < 8; i++) {
dprintk(1,
KERN_DEBUG
"%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
I2C_NAME(client), i, saa7114_read(client, i),
v4l_dbg(1, debug, client,
"reg[0x%02x] = 0x%02x (0x%02x)\n",
i, saa7114_read(client, i),
decoder->reg[REG_ADDR(i)]);
}
for (i = 0x11; i <= 0x13; i++) {
dprintk(1,
KERN_DEBUG
"%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
I2C_NAME(client), i, saa7114_read(client, i),
v4l_dbg(1, debug, client,
"reg[0x%02x] = 0x%02x (0x%02x)\n",
i, saa7114_read(client, i),
decoder->reg[REG_ADDR(i)]);
}
dprintk(1, KERN_DEBUG "%s_attach: setting video input\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "setting video input\n");
err[19] =
saa7114_write(client, 0x02, decoder->reg[REG_ADDR(0x02)]);
@ -1080,20 +995,15 @@ saa7114_detect_client (struct i2c_adapter *adapter,
for (i = 19; i <= 21; i++) {
if (err[i] < 0) {
dprintk(1,
KERN_ERR
"%s_attach: init error %d at stage %d, leaving attach.\n",
I2C_NAME(client), i, err[i]);
v4l_dbg(1, debug, client,
"init error %d at stage %d, leaving attach.\n",
i, err[i]);
kfree(decoder);
kfree(client);
return 0;
return -EIO;
}
}
dprintk(1,
KERN_DEBUG
"%s_attach: performing decoder reset sequence\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "performing decoder reset sequence\n");
err[22] = saa7114_write(client, 0x88, 0xd8); // sw reset scaler
err[23] = saa7114_write(client, 0x88, 0xf8); // sw reset scaler release
@ -1102,13 +1012,11 @@ saa7114_detect_client (struct i2c_adapter *adapter,
for (i = 22; i <= 24; i++) {
if (err[i] < 0) {
dprintk(1,
KERN_ERR
"%s_attach: init error %d at stage %d, leaving attach.\n",
I2C_NAME(client), i, err[i]);
v4l_dbg(1, debug, client,
"init error %d at stage %d, leaving attach.\n",
i, err[i]);
kfree(decoder);
kfree(client);
return 0;
return -EIO;
}
}
@ -1116,101 +1024,45 @@ saa7114_detect_client (struct i2c_adapter *adapter,
err[26] = saa7114_write(client, 0x07, init[REG_ADDR(0x07)]);
err[27] = saa7114_write(client, 0x10, init[REG_ADDR(0x10)]);
dprintk(1,
KERN_INFO
"%s_attach: chip version %x, decoder status 0x%02x\n",
I2C_NAME(client), saa7114_read(client, 0x00) >> 4,
v4l_dbg(1, debug, client, "chip version %x, decoder status 0x%02x\n",
saa7114_read(client, 0x00) >> 4,
saa7114_read(client, 0x1f));
dprintk(1,
KERN_DEBUG
"%s_attach: power save control: 0x%02x, scaler status: 0x%02x\n",
I2C_NAME(client), saa7114_read(client, 0x88),
v4l_dbg(1, debug, client,
"power save control: 0x%02x, scaler status: 0x%02x\n",
saa7114_read(client, 0x88),
saa7114_read(client, 0x8f));
for (i = 0x94; i < 0x96; i++) {
dprintk(1,
KERN_DEBUG
"%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
I2C_NAME(client), i, saa7114_read(client, i),
v4l_dbg(1, debug, client,
"reg[0x%02x] = 0x%02x (0x%02x)\n",
i, saa7114_read(client, i),
decoder->reg[REG_ADDR(i)]);
}
i = i2c_attach_client(client);
if (i) {
kfree(client);
kfree(decoder);
return i;
}
//i = saa7114_write_block(client, init, sizeof(init));
i = 0;
if (i < 0) {
dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
I2C_NAME(client), i);
} else {
dprintk(1,
KERN_INFO
"%s_attach: chip version %x at address 0x%x\n",
I2C_NAME(client), saa7114_read(client, 0x00) >> 4,
client->addr << 1);
}
return 0;
}
static int
saa7114_attach_adapter (struct i2c_adapter *adapter)
static int saa7114_remove(struct i2c_client *client)
{
dprintk(1,
KERN_INFO
"saa7114.c: starting probe for adapter %s (0x%x)\n",
I2C_NAME(adapter), adapter->id);
return i2c_probe(adapter, &addr_data, &saa7114_detect_client);
}
static int
saa7114_detach_client (struct i2c_client *client)
{
struct saa7114 *decoder = i2c_get_clientdata(client);
int err;
err = i2c_detach_client(client);
if (err) {
return err;
}
kfree(decoder);
kfree(client);
kfree(i2c_get_clientdata(client));
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_saa7114 = {
.driver = {
.name = "saa7114",
},
.id = I2C_DRIVERID_SAA7114,
.attach_adapter = saa7114_attach_adapter,
.detach_client = saa7114_detach_client,
.command = saa7114_command,
static const struct i2c_device_id saa7114_id[] = {
{ "saa7114_old", 0 }, /* "saa7114" maps to the saa7115 driver */
{ }
};
MODULE_DEVICE_TABLE(i2c, saa7114_id);
static int __init
saa7114_init (void)
{
return i2c_add_driver(&i2c_driver_saa7114);
}
static void __exit
saa7114_exit (void)
{
i2c_del_driver(&i2c_driver_saa7114);
}
module_init(saa7114_init);
module_exit(saa7114_exit);
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.name = "saa7114",
.driverid = I2C_DRIVERID_SAA7114,
.command = saa7114_command,
.probe = saa7114_probe,
.remove = saa7114_remove,
.id_table = saa7114_id,
};