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V4L/DVB (9207): saa7185: convert i2c driver for new i2c API

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- 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 08:01:20 -03:00 committed by Mauro Carvalho Chehab
parent b3286f6f52
commit 0afb351e62
1 changed files with 51 additions and 161 deletions
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212
drivers/media/video/saa7185.c
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@ -25,43 +25,25 @@
*/ */
#include <linux/module.h> #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/types.h>
#include <linux/i2c.h> #include <linux/ioctl.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/uaccess.h> #include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev.h> #include <linux/videodev.h>
#include <linux/video_encoder.h> #include <linux/video_encoder.h>
#include <media/v4l2-common.h>
#include <media/v4l2-i2c-drv-legacy.h>
MODULE_DESCRIPTION("Philips SAA7185 video encoder driver"); MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
MODULE_AUTHOR("Dave Perks"); MODULE_AUTHOR("Dave Perks");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
#define I2C_NAME(s) (s)->name
static int debug; static int debug;
module_param(debug, int, 0); module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)"); MODULE_PARM_DESC(debug, "Debug level (0-1)");
#define dprintk(num, format, args...) \
do { \
if (debug >= num) \
printk(format, ##args); \
} while (0)
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
struct saa7185 { struct saa7185 {
@ -75,32 +57,24 @@ struct saa7185 {
int sat; int sat;
}; };
#define I2C_SAA7185 0x88
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
static inline int static inline int saa7185_read(struct i2c_client *client)
saa7185_read (struct i2c_client *client)
{ {
return i2c_smbus_read_byte(client); return i2c_smbus_read_byte(client);
} }
static int static int saa7185_write(struct i2c_client *client, u8 reg, u8 value)
saa7185_write (struct i2c_client *client,
u8 reg,
u8 value)
{ {
struct saa7185 *encoder = i2c_get_clientdata(client); struct saa7185 *encoder = i2c_get_clientdata(client);
dprintk(1, KERN_DEBUG "SAA7185: %02x set to %02x\n", reg, value); v4l_dbg(1, debug, client, "%02x set to %02x\n", reg, value);
encoder->reg[reg] = value; encoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value); return i2c_smbus_write_byte_data(client, reg, value);
} }
static int static int saa7185_write_block(struct i2c_client *client,
saa7185_write_block (struct i2c_client *client, const u8 *data, unsigned int len)
const u8 *data,
unsigned int len)
{ {
int ret = -1; int ret = -1;
u8 reg; u8 reg;
@ -121,18 +95,17 @@ saa7185_write_block (struct i2c_client *client,
encoder->reg[reg++] = data[1]; encoder->reg[reg++] = data[1];
len -= 2; len -= 2;
data += 2; data += 2;
} while (len >= 2 && data[0] == reg && } while (len >= 2 && data[0] == reg && block_len < 32);
block_len < 32); ret = i2c_master_send(client, block_data, block_len);
if ((ret = i2c_master_send(client, block_data, if (ret < 0)
block_len)) < 0)
break; break;
} }
} else { } else {
/* do some slow I2C emulation kind of thing */ /* do some slow I2C emulation kind of thing */
while (len >= 2) { while (len >= 2) {
reg = *data++; reg = *data++;
if ((ret = saa7185_write(client, reg, ret = saa7185_write(client, reg, *data++);
*data++)) < 0) if (ret < 0)
break; break;
len -= 2; len -= 2;
} }
@ -240,15 +213,11 @@ static const unsigned char init_ntsc[] = {
0x66, 0x21, /* FSC3 */ 0x66, 0x21, /* FSC3 */
}; };
static int static int saa7185_command(struct i2c_client *client, unsigned cmd, void *arg)
saa7185_command (struct i2c_client *client,
unsigned int cmd,
void *arg)
{ {
struct saa7185 *encoder = i2c_get_clientdata(client); struct saa7185 *encoder = i2c_get_clientdata(client);
switch (cmd) { switch (cmd) {
case 0: case 0:
saa7185_write_block(client, init_common, saa7185_write_block(client, init_common,
sizeof(init_common)); sizeof(init_common));
@ -264,7 +233,6 @@ saa7185_command (struct i2c_client *client,
sizeof(init_pal)); sizeof(init_pal));
break; break;
} }
break; break;
case ENCODER_GET_CAPABILITIES: case ENCODER_GET_CAPABILITIES:
@ -276,8 +244,8 @@ saa7185_command (struct i2c_client *client,
VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR; VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR;
cap->inputs = 1; cap->inputs = 1;
cap->outputs = 1; cap->outputs = 1;
}
break; break;
}
case ENCODER_SET_NORM: case ENCODER_SET_NORM:
{ {
@ -286,7 +254,6 @@ saa7185_command (struct i2c_client *client,
//saa7185_write_block(client, init_common, sizeof(init_common)); //saa7185_write_block(client, init_common, sizeof(init_common));
switch (*iarg) { switch (*iarg) {
case VIDEO_MODE_NTSC: case VIDEO_MODE_NTSC:
saa7185_write_block(client, init_ntsc, saa7185_write_block(client, init_ntsc,
sizeof(init_ntsc)); sizeof(init_ntsc));
@ -300,11 +267,10 @@ saa7185_command (struct i2c_client *client,
case VIDEO_MODE_SECAM: case VIDEO_MODE_SECAM:
default: default:
return -EINVAL; return -EINVAL;
} }
encoder->norm = *iarg; encoder->norm = *iarg;
}
break; break;
}
case ENCODER_SET_INPUT: case ENCODER_SET_INPUT:
{ {
@ -314,7 +280,6 @@ saa7185_command (struct i2c_client *client,
*iarg = 1: input is from ZR36060 */ *iarg = 1: input is from ZR36060 */
switch (*iarg) { switch (*iarg) {
case 0: case 0:
/* Switch RTCE to 1 */ /* Switch RTCE to 1 */
saa7185_write(client, 0x61, saa7185_write(client, 0x61,
@ -332,21 +297,19 @@ saa7185_command (struct i2c_client *client,
default: default:
return -EINVAL; return -EINVAL;
} }
}
break; break;
}
case ENCODER_SET_OUTPUT: case ENCODER_SET_OUTPUT:
{ {
int *iarg = arg; int *iarg = arg;
/* not much choice of outputs */ /* not much choice of outputs */
if (*iarg != 0) { if (*iarg != 0)
return -EINVAL; return -EINVAL;
}
}
break; break;
}
case ENCODER_ENABLE_OUTPUT: case ENCODER_ENABLE_OUTPUT:
{ {
@ -356,8 +319,8 @@ saa7185_command (struct i2c_client *client,
saa7185_write(client, 0x61, saa7185_write(client, 0x61,
(encoder->reg[0x61] & 0xbf) | (encoder->reg[0x61] & 0xbf) |
(encoder->enable ? 0x00 : 0x40)); (encoder->enable ? 0x00 : 0x40));
}
break; break;
}
default: default:
return -EINVAL; return -EINVAL;
@ -368,138 +331,65 @@ saa7185_command (struct i2c_client *client,
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
/* static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
* Generic i2c probe
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
*/
static unsigned short normal_i2c[] = { I2C_SAA7185 >> 1, I2C_CLIENT_END };
static unsigned short ignore = I2C_CLIENT_END; I2C_CLIENT_INSMOD;
static struct i2c_client_address_data addr_data = { static int saa7185_probe(struct i2c_client *client,
.normal_i2c = normal_i2c, const struct i2c_device_id *id)
.probe = &ignore,
.ignore = &ignore,
};
static struct i2c_driver i2c_driver_saa7185;
static int
saa7185_detect_client (struct i2c_adapter *adapter,
int address,
int kind)
{ {
int i; int i;
struct i2c_client *client;
struct saa7185 *encoder; struct saa7185 *encoder;
dprintk(1,
KERN_INFO
"saa7185.c: detecting saa7185 client on address 0x%x\n",
address << 1);
/* Check if the adapter supports the needed features */ /* Check if the adapter supports the needed features */
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return 0; return -ENODEV;
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); v4l_info(client, "chip found @ 0x%x (%s)\n",
if (!client) client->addr << 1, client->adapter->name);
return -ENOMEM;
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver_saa7185;
strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client)));
encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL); encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
if (encoder == NULL) { if (encoder == NULL)
kfree(client);
return -ENOMEM; return -ENOMEM;
}
encoder->norm = VIDEO_MODE_NTSC; encoder->norm = VIDEO_MODE_NTSC;
encoder->enable = 1; encoder->enable = 1;
i2c_set_clientdata(client, encoder); i2c_set_clientdata(client, encoder);
i = i2c_attach_client(client);
if (i) {
kfree(client);
kfree(encoder);
return i;
}
i = saa7185_write_block(client, init_common, sizeof(init_common)); i = saa7185_write_block(client, init_common, sizeof(init_common));
if (i >= 0) { if (i >= 0)
i = saa7185_write_block(client, init_ntsc, i = saa7185_write_block(client, init_ntsc, sizeof(init_ntsc));
sizeof(init_ntsc)); if (i < 0)
} v4l_dbg(1, debug, client, "init error %d\n", i);
if (i < 0) { else
dprintk(1, KERN_ERR "%s_attach: init error %d\n", v4l_dbg(1, debug, client, "revision 0x%x\n",
I2C_NAME(client), i); saa7185_read(client) >> 5);
} else {
dprintk(1,
KERN_INFO
"%s_attach: chip version %d at address 0x%x\n",
I2C_NAME(client), saa7185_read(client) >> 5,
client->addr << 1);
}
return 0; return 0;
} }
static int static int saa7185_remove(struct i2c_client *client)
saa7185_attach_adapter (struct i2c_adapter *adapter)
{
dprintk(1,
KERN_INFO
"saa7185.c: starting probe for adapter %s (0x%x)\n",
I2C_NAME(adapter), adapter->id);
return i2c_probe(adapter, &addr_data, &saa7185_detect_client);
}
static int
saa7185_detach_client (struct i2c_client *client)
{ {
struct saa7185 *encoder = i2c_get_clientdata(client); struct saa7185 *encoder = i2c_get_clientdata(client);
int err;
err = i2c_detach_client(client);
if (err) {
return err;
}
saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40); /* SW: output off is active */ saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40); /* SW: output off is active */
//saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */ //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
kfree(encoder); kfree(encoder);
kfree(client);
return 0; return 0;
} }
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_saa7185 = { static const struct i2c_device_id saa7185_id[] = {
.driver = { { "saa7185", 0 },
.name = "saa7185", /* name */ { }
},
.id = I2C_DRIVERID_SAA7185B,
.attach_adapter = saa7185_attach_adapter,
.detach_client = saa7185_detach_client,
.command = saa7185_command,
}; };
MODULE_DEVICE_TABLE(i2c, saa7185_id);
static int __init static struct v4l2_i2c_driver_data v4l2_i2c_data = {
saa7185_init (void) .name = "saa7185",
{ .driverid = I2C_DRIVERID_SAA7185B,
return i2c_add_driver(&i2c_driver_saa7185); .command = saa7185_command,
} .probe = saa7185_probe,
.remove = saa7185_remove,
static void __exit .id_table = saa7185_id,
saa7185_exit (void) };
{
i2c_del_driver(&i2c_driver_saa7185);
}
module_init(saa7185_init);
module_exit(saa7185_exit);