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V4L/DVB (9208): vpx3220: 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 08:01:39 -03:00 committed by Mauro Carvalho Chehab
parent 0afb351e62
commit 23848b655a
1 changed files with 92 additions and 238 deletions
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330
drivers/media/video/vpx3220.c
View File

@ -22,32 +22,21 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#define I2C_NAME(x) (x)->name
#include <linux/videodev.h>
#include <media/v4l2-common.h>
#include <media/v4l2-i2c-drv-legacy.h>
#include <linux/videodev.h>
#include <linux/video_decoder.h>
#define I2C_VPX3220 0x86
#define VPX3220_DEBUG KERN_DEBUG "vpx3220: "
MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video decoder driver");
MODULE_AUTHOR("Laurent Pinchart");
MODULE_LICENSE("GPL");
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)
#define VPX_TIMEOUT_COUNT 10
/* ----------------------------------------------------------------------- */
@ -67,10 +56,8 @@ struct vpx3220 {
static char *inputs[] = { "internal", "composite", "svideo" };
/* ----------------------------------------------------------------------- */
static inline int
vpx3220_write (struct i2c_client *client,
u8 reg,
u8 value)
static inline int vpx3220_write(struct i2c_client *client, u8 reg, u8 value)
{
struct vpx3220 *decoder = i2c_get_clientdata(client);
@ -78,15 +65,12 @@ vpx3220_write (struct i2c_client *client,
return i2c_smbus_write_byte_data(client, reg, value);
}
static inline int
vpx3220_read (struct i2c_client *client,
u8 reg)
static inline int vpx3220_read(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
static int
vpx3220_fp_status (struct i2c_client *client)
static int vpx3220_fp_status(struct i2c_client *client)
{
unsigned char status;
unsigned int i;
@ -106,14 +90,11 @@ vpx3220_fp_status (struct i2c_client *client)
return -1;
}
static int
vpx3220_fp_write (struct i2c_client *client,
u8 fpaddr,
u16 data)
static int vpx3220_fp_write(struct i2c_client *client, u8 fpaddr, u16 data)
{
/* Write the 16-bit address to the FPWR register */
if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) {
dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
v4l_dbg(1, debug, client, "%s: failed\n", __func__);
return -1;
}
@ -122,22 +103,20 @@ vpx3220_fp_write (struct i2c_client *client,
/* Write the 16-bit data to the FPDAT register */
if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) {
dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
v4l_dbg(1, debug, client, "%s: failed\n", __func__);
return -1;
}
return 0;
}
static u16
vpx3220_fp_read (struct i2c_client *client,
u16 fpaddr)
static u16 vpx3220_fp_read(struct i2c_client *client, u16 fpaddr)
{
s16 data;
/* Write the 16-bit address to the FPRD register */
if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) {
dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
v4l_dbg(1, debug, client, "%s: failed\n", __func__);
return -1;
}
@ -147,25 +126,22 @@ vpx3220_fp_read (struct i2c_client *client,
/* Read the 16-bit data from the FPDAT register */
data = i2c_smbus_read_word_data(client, 0x28);
if (data == -1) {
dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
v4l_dbg(1, debug, client, "%s: failed\n", __func__);
return -1;
}
return swab16(data);
}
static int
vpx3220_write_block (struct i2c_client *client,
const u8 *data,
unsigned int len)
static int vpx3220_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
{
u8 reg;
int ret = -1;
while (len >= 2) {
reg = *data++;
if ((ret =
vpx3220_write(client, reg, *data++)) < 0)
ret = vpx3220_write(client, reg, *data++);
if (ret < 0)
break;
len -= 2;
}
@ -173,10 +149,8 @@ vpx3220_write_block (struct i2c_client *client,
return ret;
}
static int
vpx3220_write_fp_block (struct i2c_client *client,
const u16 *data,
unsigned int len)
static int vpx3220_write_fp_block(struct i2c_client *client,
const u16 *data, unsigned int len)
{
u8 reg;
int ret = 0;
@ -285,25 +259,20 @@ static const unsigned short init_fp[] = {
0x4b, 0x298, /* PLL gain */
};
static void
vpx3220_dump_i2c (struct i2c_client *client)
static void vpx3220_dump_i2c(struct i2c_client *client)
{
int len = sizeof(init_common);
const unsigned char *data = init_common;
while (len > 1) {
dprintk(1,
KERN_DEBUG "vpx3216b i2c reg 0x%02x data 0x%02x\n",
v4l_dbg(1, debug, client, "i2c reg 0x%02x data 0x%02x\n",
*data, vpx3220_read(client, *data));
data += 2;
len -= 2;
}
}
static int
vpx3220_command (struct i2c_client *client,
unsigned int cmd,
void *arg)
static int vpx3220_command(struct i2c_client *client, unsigned cmd, void *arg)
{
struct vpx3220 *decoder = i2c_get_clientdata(client);
@ -315,7 +284,6 @@ vpx3220_command (struct i2c_client *client,
vpx3220_write_fp_block(client, init_fp,
sizeof(init_fp) >> 1);
switch (decoder->norm) {
case VIDEO_MODE_NTSC:
vpx3220_write_fp_block(client, init_ntsc,
sizeof(init_ntsc) >> 1);
@ -334,21 +302,20 @@ vpx3220_command (struct i2c_client *client,
sizeof(init_pal) >> 1);
break;
}
}
break;
}
case DECODER_DUMP:
{
vpx3220_dump_i2c(client);
}
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, "DECODER_GET_CAPABILITIES\n");
cap->flags = VIDEO_DECODER_PAL |
VIDEO_DECODER_NTSC |
@ -357,20 +324,18 @@ vpx3220_command (struct i2c_client *client,
VIDEO_DECODER_CCIR;
cap->inputs = 3;
cap->outputs = 1;
}
break;
}
case DECODER_GET_STATUS:
{
int res = 0, status;
dprintk(1, KERN_INFO "%s: DECODER_GET_STATUS\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "DECODER_GET_STATUS\n");
status = vpx3220_fp_read(client, 0x0f3);
dprintk(1, KERN_INFO "%s: status: 0x%04x\n", I2C_NAME(client),
status);
v4l_dbg(1, debug, client, "status: 0x%04x\n", status);
if (status < 0)
return status;
@ -379,7 +344,6 @@ vpx3220_command (struct i2c_client *client,
res |= DECODER_STATUS_GOOD | DECODER_STATUS_COLOR;
switch (status & 0x18) {
case 0x00:
case 0x10:
case 0x14:
@ -400,8 +364,8 @@ vpx3220_command (struct i2c_client *client,
}
*(int *) arg = res;
}
break;
}
case DECODER_SET_NORM:
{
@ -413,50 +377,43 @@ vpx3220_command (struct i2c_client *client,
choosen video norm */
temp_input = vpx3220_fp_read(client, 0xf2);
dprintk(1, KERN_DEBUG "%s: DECODER_SET_NORM %d\n",
I2C_NAME(client), *iarg);
v4l_dbg(1, debug, client, "DECODER_SET_NORM %d\n", *iarg);
switch (*iarg) {
case VIDEO_MODE_NTSC:
vpx3220_write_fp_block(client, init_ntsc,
sizeof(init_ntsc) >> 1);
dprintk(1, KERN_INFO "%s: norm switched to NTSC\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "norm switched to NTSC\n");
break;
case VIDEO_MODE_PAL:
vpx3220_write_fp_block(client, init_pal,
sizeof(init_pal) >> 1);
dprintk(1, KERN_INFO "%s: norm switched to PAL\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "norm switched to PAL\n");
break;
case VIDEO_MODE_SECAM:
vpx3220_write_fp_block(client, init_secam,
sizeof(init_secam) >> 1);
dprintk(1, KERN_INFO "%s: norm switched to SECAM\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "norm switched to SECAM\n");
break;
case VIDEO_MODE_AUTO:
/* FIXME This is only preliminary support */
data = vpx3220_fp_read(client, 0xf2) & 0x20;
vpx3220_fp_write(client, 0xf2, 0x00c0 | data);
dprintk(1, KERN_INFO "%s: norm switched to Auto\n",
I2C_NAME(client));
v4l_dbg(1, debug, client, "norm switched to AUTO\n");
break;
default:
return -EINVAL;
}
decoder->norm = *iarg;
/* And here we set the backed up video input again */
vpx3220_fp_write(client, 0xf2, temp_input | 0x0010);
udelay(10);
}
break;
}
case DECODER_SET_INPUT:
{
@ -475,8 +432,7 @@ vpx3220_command (struct i2c_client *client,
if (*iarg < 0 || *iarg > 2)
return -EINVAL;
dprintk(1, KERN_INFO "%s: input switched to %s\n",
I2C_NAME(client), inputs[*iarg]);
v4l_dbg(1, debug, client, "input switched to %s\n", inputs[*iarg]);
vpx3220_write(client, 0x33, input[*iarg][0]);
@ -488,8 +444,8 @@ vpx3220_command (struct i2c_client *client,
data | (input[*iarg][1] << 5) | 0x0010);
udelay(10);
}
break;
}
case DECODER_SET_OUTPUT:
{
@ -499,19 +455,18 @@ vpx3220_command (struct i2c_client *client,
if (*iarg != 0) {
return -EINVAL;
}
}
break;
}
case DECODER_ENABLE_OUTPUT:
{
int *iarg = arg;
dprintk(1, KERN_DEBUG "%s: DECODER_ENABLE_OUTPUT %d\n",
I2C_NAME(client), *iarg);
v4l_dbg(1, debug, client, "DECODER_ENABLE_OUTPUT %d\n", *iarg);
vpx3220_write(client, 0xf2, (*iarg ? 0x1b : 0x00));
}
break;
}
case DECODER_SET_PICTURE:
{
@ -542,8 +497,8 @@ vpx3220_command (struct i2c_client *client,
vpx3220_fp_write(client, 0x1c,
((decoder->hue - 32768) >> 6) & 0xFFF);
}
}
break;
}
default:
return -EINVAL;
@ -552,8 +507,7 @@ vpx3220_command (struct i2c_client *client,
return 0;
}
static int
vpx3220_init_client (struct i2c_client *client)
static int vpx3220_init_client(struct i2c_client *client)
{
vpx3220_write_block(client, init_common, sizeof(init_common));
vpx3220_write_fp_block(client, init_fp, sizeof(init_fp) >> 1);
@ -567,115 +521,26 @@ vpx3220_init_client (struct i2c_client *client)
* Client management code
*/
/*
* Generic i2c probe
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
*/
static unsigned short normal_i2c[] =
{ I2C_VPX3220 >> 1, (I2C_VPX3220 >> 1) + 4,
I2C_CLIENT_END
};
static unsigned short normal_i2c[] = { 0x86 >> 1, 0x8e >> 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 vpx3220_i2c_driver;
static int
vpx3220_detach_client (struct i2c_client *client)
static int vpx3220_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct vpx3220 *decoder = i2c_get_clientdata(client);
int err;
err = i2c_detach_client(client);
if (err) {
return err;
}
kfree(decoder);
kfree(client);
return 0;
}
static int
vpx3220_detect_client (struct i2c_adapter *adapter,
int address,
int kind)
{
int err;
struct i2c_client *client;
struct vpx3220 *decoder;
dprintk(1, VPX3220_DEBUG "%s\n", __func__);
const char *name = NULL;
u8 ver;
u16 pn;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality
(adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
return 0;
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (client == NULL) {
return -ENOMEM;
}
client->addr = address;
client->adapter = adapter;
client->driver = &vpx3220_i2c_driver;
/* Check for manufacture ID and part number */
if (kind < 0) {
u8 id;
u16 pn;
id = vpx3220_read(client, 0x00);
if (id != 0xec) {
dprintk(1,
KERN_INFO
"vpx3220_attach: Wrong manufacturer ID (0x%02x)\n",
id);
kfree(client);
return 0;
}
pn = (vpx3220_read(client, 0x02) << 8) +
vpx3220_read(client, 0x01);
switch (pn) {
case 0x4680:
strlcpy(I2C_NAME(client), "vpx3220a",
sizeof(I2C_NAME(client)));
break;
case 0x4260:
strlcpy(I2C_NAME(client), "vpx3216b",
sizeof(I2C_NAME(client)));
break;
case 0x4280:
strlcpy(I2C_NAME(client), "vpx3214c",
sizeof(I2C_NAME(client)));
break;
default:
dprintk(1,
KERN_INFO
"%s: Wrong part number (0x%04x)\n",
__func__, pn);
kfree(client);
return 0;
}
} else {
strlcpy(I2C_NAME(client), "forced vpx32xx",
sizeof(I2C_NAME(client)));
}
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
return -ENODEV;
decoder = kzalloc(sizeof(struct vpx3220), GFP_KERNEL);
if (decoder == NULL) {
kfree(client);
if (decoder == NULL)
return -ENOMEM;
}
decoder->norm = VIDEO_MODE_PAL;
decoder->input = 0;
decoder->enable = 1;
@ -685,63 +550,52 @@ vpx3220_detect_client (struct i2c_adapter *adapter,
decoder->sat = 32768;
i2c_set_clientdata(client, decoder);
err = i2c_attach_client(client);
if (err) {
kfree(client);
kfree(decoder);
return err;
ver = i2c_smbus_read_byte_data(client, 0x00);
pn = (i2c_smbus_read_byte_data(client, 0x02) << 8) +
i2c_smbus_read_byte_data(client, 0x01);
if (ver == 0xec) {
switch (pn) {
case 0x4680:
name = "vpx3220a";
break;
case 0x4260:
name = "vpx3216b";
break;
case 0x4280:
name = "vpx3214c";
break;
}
}
dprintk(1, KERN_INFO "%s: vpx32xx client found at address 0x%02x\n",
I2C_NAME(client), client->addr << 1);
if (name)
v4l_info(client, "%s found @ 0x%x (%s)\n", name,
client->addr << 1, client->adapter->name);
else
v4l_info(client, "chip (%02x:%04x) found @ 0x%x (%s)\n",
ver, pn, client->addr << 1, client->adapter->name);
vpx3220_init_client(client);
return 0;
}
static int
vpx3220_attach_adapter (struct i2c_adapter *adapter)
static int vpx3220_remove(struct i2c_client *client)
{
int ret;
ret = i2c_probe(adapter, &addr_data, &vpx3220_detect_client);
dprintk(1, VPX3220_DEBUG "%s: i2c_probe returned %d\n",
__func__, ret);
return ret;
kfree(i2c_get_clientdata(client));
return 0;
}
/* -----------------------------------------------------------------------
* Driver initialization and cleanup code
*/
static struct i2c_driver vpx3220_i2c_driver = {
.driver = {
.name = "vpx3220",
},
.id = I2C_DRIVERID_VPX3220,
.attach_adapter = vpx3220_attach_adapter,
.detach_client = vpx3220_detach_client,
.command = vpx3220_command,
static const struct i2c_device_id vpx3220_id[] = {
{ "vpx3220a", 0 },
{ "vpx3216b", 0 },
{ "vpx3214c", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, vpx3220_id);
static int __init
vpx3220_init (void)
{
return i2c_add_driver(&vpx3220_i2c_driver);
}
static void __exit
vpx3220_cleanup (void)
{
i2c_del_driver(&vpx3220_i2c_driver);
}
module_init(vpx3220_init);
module_exit(vpx3220_cleanup);
MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video decoder driver");
MODULE_AUTHOR("Laurent Pinchart");
MODULE_LICENSE("GPL");
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.name = "vpx3220",
.driverid = I2C_DRIVERID_VPX3220,
.command = vpx3220_command,
.probe = vpx3220_probe,
.remove = vpx3220_remove,
.id_table = vpx3220_id,
};