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Subject[PATCH] 2.5.21: i2c conversion for drivers/media/video/saa7110.c
Hello all,
Here's what I propose as a complete conversion from the old i2c-old
interface to the current one (against 2.5.21). I used
drivers/media/video/saa5249.c as a basis for the conversion, as well as
reviewing the i2c documentation. Let me know what you think.
Regards,
Frank

--- drivers/media/video/saa7110.c.old Sun May 26 14:07:36 2002
+++ drivers/media/video/saa7110.c Wed Jun 12 01:58:52 2002
@@ -26,7 +26,7 @@
#include <asm/io.h>
#include <asm/uaccess.h>

-#include <linux/i2c-old.h>
+#include <linux/i2c.h>
#include <linux/videodev.h>
#include "linux/video_decoder.h"

@@ -37,13 +37,31 @@

#define I2C_SAA7110
0x9C /* or 0x9E */

+#define IF_NAME "saa7110"
#define I2C_DELAY
10 /* 10 us or 100khz */

+static unsigned short normal_i2c[] = {34>>1, I2C_CLIENT_END };
+static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
+static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short force[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+
+static struct i2c_client_address_data addr_data = {
+
normal_i2c, normal_i2c_range,
+
probe, probe_range,
+
ignore, ignore_range,
+
force
+};
+
+static struct i2c_client client_template;
+
struct saa7110 {
-
struct
i2c_bus
*bus;
+
struct i2c_client *client;
int
addr;
unsigned char reg[36];
-
+
struct semaphore lock;
int
norm;
int
input;
int
enable;
@@ -54,67 +72,10 @@
};

/*
----------------------------------------------------------------------- */
-/* I2C support functions */
-/*
----------------------------------------------------------------------- */
-static
-int saa7110_write(struct saa7110 *decoder, unsigned char subaddr,
unsigned char data)
-{
-
int ack;
-
-
LOCK_I2C_BUS(decoder->bus);
-
i2c_start(decoder->bus);
-
i2c_sendbyte(decoder->bus, decoder->addr, I2C_DELAY);
-
i2c_sendbyte(decoder->bus, subaddr, I2C_DELAY);
-
ack = i2c_sendbyte(decoder->bus, data, I2C_DELAY);
-
i2c_stop(decoder->bus);
-
decoder->reg[subaddr] = data;
-
UNLOCK_I2C_BUS(decoder->bus);
-
return ack;
-}
-
-static
-int saa7110_write_block(struct saa7110* decoder, unsigned const char
*data, unsigned int len)
-{
-
unsigned subaddr = *data;
-
-
LOCK_I2C_BUS(decoder->bus);
- i2c_start(decoder->bus);
- i2c_sendbyte(decoder->bus,decoder->addr,I2C_DELAY);
-
while (len-- > 0) {
- if (i2c_sendbyte(decoder->bus,*data,0)) {
- i2c_stop(decoder->bus);
- UNLOCK_I2C_BUS(decoder->bus);
- return -EAGAIN;
- }
-
decoder->reg[subaddr++] = *data++;
- }
-
i2c_stop(decoder->bus);
-
UNLOCK_I2C_BUS(decoder->bus);
-
-
return 0;
-}
-
-static
-int saa7110_read(struct saa7110* decoder)
-{
-
int data;
-
-
LOCK_I2C_BUS(decoder->bus);
-
i2c_start(decoder->bus);
-
i2c_sendbyte(decoder->bus, decoder->addr, I2C_DELAY);
-
i2c_start(decoder->bus);
-
i2c_sendbyte(decoder->bus, decoder->addr | 1, I2C_DELAY);
-
data = i2c_readbyte(decoder->bus, 1);
-
i2c_stop(decoder->bus);
-
UNLOCK_I2C_BUS(decoder->bus);
-
return data;
-}
-
-/*
----------------------------------------------------------------------- */
/* SAA7110 functions */
/*
----------------------------------------------------------------------- */
static
-int saa7110_selmux(struct i2c_device *device, int chan)
+int saa7110_selmux(struct i2c_client *client, int chan)
{
static const unsigned char modes[9][8] = {
/* mode 0 */ { 0x00, 0xD9, 0x17, 0x40, 0x03, 0x44, 0x75, 0x16 },
@@ -126,61 +87,60 @@
/* mode 6 */ { 0x80, 0x59, 0x17, 0x42, 0xA3, 0x44, 0x75, 0x12 },
/* mode 7 */ { 0x80, 0x9A, 0x17, 0xB1, 0x13, 0x60, 0xB5, 0x14 },
/* mode 8 */ { 0x80, 0x3C, 0x27, 0xC1, 0x23, 0x44, 0x75, 0x21 } };
-
struct saa7110* decoder = device->data;
const unsigned char* ptr = modes[chan];

-
saa7110_write(decoder,0x06,ptr[0]);
/* Luminance control */
-
saa7110_write(decoder,0x20,ptr[1]);
/* Analog Control #1 */
-
saa7110_write(decoder,0x21,ptr[2]);
/* Analog Control #2 */
-
saa7110_write(decoder,0x22,ptr[3]);
/* Mixer Control #1 */
-
saa7110_write(decoder,0x2C,ptr[4]);
/* Mixer Control #2 */
-
saa7110_write(decoder,0x30,ptr[5]);
/* ADCs gain control */
-
saa7110_write(decoder,0x31,ptr[6]);
/* Mixer Control #3 */
-
saa7110_write(decoder,0x21,ptr[7]);
/* Analog Control #2 */
+
i2c_smbus_write_byte(client,0x06,ptr[0]);
/* Luminance control */
+
i2c_smbus_write_byte(client,0x20,ptr[1]);
/* Analog Control #1 */
+
i2c_smbus_write_byte(client,0x21,ptr[2]);
/* Analog Control #2 */
+
i2c_smbus_write_byte(client,0x22,ptr[3]);
/* Mixer Control #1 */
+
i2c_smbus_write_byte(client,0x2C,ptr[4]);
/* Mixer Control #2 */
+
i2c_smbus_write_byte(client,0x30,ptr[5]);
/* ADCs gain control */
+
i2c_smbus_write_byte(client,0x31,ptr[6]);
/* Mixer Control #3 */
+
i2c_smbus_write_byte(client,0x21,ptr[7]);
/* Analog Control #2 */

return 0;
}

static
-int determine_norm(struct i2c_device* dev)
+int determine_norm(struct i2c_client* client)
{
-
struct
saa7110* decoder = dev->data;
+
struct
saa7110* decoder = client->data;
int status;

/* mode changed, start automatic detection */
-
status = saa7110_read(decoder);
+
status = i2c_smbus_read_byte(client);
if ((status & 3) == 0) {
-
saa7110_write(decoder,0x06,0x80);
+
i2c_smbus_write_byte(client,0x06,0x80);
if (status & 0x20) {
-
DEBUG(printk(KERN_INFO "%s: norm=bw60\n",dev->name));
-
saa7110_write(decoder,0x2E,0x81);
+
DEBUG(printk(KERN_INFO "%s: norm=bw60\n",adp->name));
+
i2c_smbus_write_byte(client,0x2E,0x81);

return VIDEO_MODE_NTSC;
}
-
DEBUG(printk(KERN_INFO "%s: norm=bw50\n",dev->name));
-
saa7110_write(decoder,0x2E,0x9A);
+
DEBUG(printk(KERN_INFO "%s: norm=bw50\n",adp->name));
+
i2c_smbus_write_byte(client,0x2E,0x9A);
return VIDEO_MODE_PAL;
}

-
saa7110_write(decoder,0x06,0x00);
+
i2c_smbus_write_byte(client,0x06,0x00);
if (status & 0x20) { /* 60Hz */
-
DEBUG(printk(KERN_INFO "%s: norm=ntsc\n",dev->name));
-
saa7110_write(decoder,0x0D,0x06);
-
saa7110_write(decoder,0x11,0x2C);
-
saa7110_write(decoder,0x2E,0x81);
+
DEBUG(printk(KERN_INFO "%s: norm=ntsc\n",adp->name));
+
i2c_smbus_write_byte(client,0x0D,0x06);
+
i2c_smbus_write_byte(client,0x11,0x2C);
+
i2c_smbus_write_byte(client,0x2E,0x81);
return VIDEO_MODE_NTSC;
}

/* 50Hz -> PAL/SECAM */
-
saa7110_write(decoder,0x0D,0x06);
-
saa7110_write(decoder,0x11,0x59);
-
saa7110_write(decoder,0x2E,0x9A);
+
i2c_smbus_write_byte(client,0x0D,0x06);
+
i2c_smbus_write_byte(client,0x11,0x59);
+
i2c_smbus_write_byte(client,0x2E,0x9A);

mdelay(150); /* pause 150 ms */

-
status = saa7110_read(decoder);
+
status = i2c_smbus_read_byte(client);
if ((status & 0x03) == 0x01) {
DEBUG(printk(KERN_INFO "%s: norm=secam\n",dev->name));
-
saa7110_write(decoder,0x0D,0x07);
+
i2c_smbus_write_byte(client,0x0D,0x07);
return VIDEO_MODE_SECAM;
}
DEBUG(printk(KERN_INFO "%s: norm=pal\n",dev->name));
@@ -188,7 +148,7 @@
}

static
-int saa7110_attach(struct i2c_device *device)
+int saa7110_attach(struct i2c_adapter *adap, int addr, unsigned short
flags, int kind)
{
static const unsigned char initseq[] = {
0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF0, 0x00, 0x00,
@@ -198,20 +158,27 @@
0xD9, 0x17, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x81, 0x03,
0x40, 0x75, 0x01, 0x8C, 0x03};
-
struct
saa7110*
decoder;
+
struct
saa7110
*decoder;
+
struct i2c_client *client;
int
rv;
-
-
device->data = decoder = kmalloc(sizeof(struct saa7110), GFP_KERNEL);
-
if (device->data == 0)
+
client=kmalloc(sizeof(*client), GPF_KERNEL);
+
if(client == NULL)
return -ENOMEM;
-
-
MOD_INC_USE_COUNT;
+
client_template.adapter = adap;
+
client_template.addr = addr;
+
memcpy(client, &client_template, sizeof(*client));
+
+
decoder = kmalloc(sizeof(*decoder), GFP_KERNEL);
+
if (decoder == NULL) {
+
kfree(client);
+
return -ENOMEM;
+
}

/* clear our private data */
-
memset(decoder, 0, sizeof(struct saa7110));
-
strcpy(device->name, "saa7110");
-
decoder->bus = device->bus;
-
decoder->addr = device->addr;
+
memset(decoder, 0, sizeof(*decoder));
+
strcpy(client->name, IF_NAME);
+
decoder->client = client;
+
decoder->addr = addr;
decoder->norm = VIDEO_MODE_PAL;
decoder->input = 0;
decoder->enable = 1;
@@ -220,38 +187,50 @@
decoder->hue = 32768;
decoder->sat = 32768;

-
rv = saa7110_write_block(decoder, initseq, sizeof(initseq));
+
rv = i2c_smbus_write_block_data(client, initseq, sizeof(initseq));
if (rv < 0)
-
printk(KERN_ERR "%s_attach: init status %d\n", device->name, rv);
+
printk(KERN_ERR "%s_attach: init status %d\n", client->name, rv);
else {
-
saa7110_write(decoder,0x21,0x16);
-
saa7110_write(decoder,0x0D,0x04);
-
DEBUG(printk(KERN_INFO "%s_attach: chip version %x\n", device->name,
saa7110_read(decoder)));
-
saa7110_write(decoder,0x0D,0x06);
+
i2c_smbus_write_byte(client,0x21,0x16);
+
i2c_smbus_write_byte(client,0x0D,0x04);
+
DEBUG(printk(KERN_INFO "%s_attach: chip version %x\n", client->name,
i2c_smbus_read_byte(client)));
+
i2c_smbus_write_byte(client,0x0D,0x06);
}

+
init_MUTEX(&decoder->lock);
+
i2c_attach_client(client);
+
MOD_INC_USE_COUNT;
/* setup and implicit mode 0 select has been performed */
return 0;
}

+static
+int saa_7110_probe(struct i2c_adapter *adap)
+{
+
return i2c_probe(adap, &addr_data, saa7110_attach);
+}
+
static
-int saa7110_detach(struct i2c_device *device)
+int saa7110_detach(struct i2c_client *client)
{
-
struct saa7110* decoder = device->data;
+
struct saa7110* decoder = client->data;

-
DEBUG(printk(KERN_INFO "%s_detach\n",device->name));
+
i2c_detach_client(client);
+
+
DEBUG(printk(KERN_INFO "%s_detach\n",client->name));

/* stop further output */
-
saa7110_write(decoder,0x0E,0x00);
+
i2c_smbus_write_byte(client,0x0E,0x00);

-
kfree(device->data);
+
kfree(decoder);
+
kfree(client);

MOD_DEC_USE_COUNT;
return 0;
}

static
-int saa7110_command(struct i2c_device *device, unsigned int cmd, void *arg)
+int saa7110_command(struct i2c_client *device, unsigned int cmd, void *arg)
{
struct saa7110* decoder = device->data;
int v;
@@ -276,7 +255,7 @@

int status;

int res = 0;

-
status = i2c_read(device->bus,device->addr|1);
+
status = i2c_master_send(device,device->addr|1);

if (status & 0x40)

res |= DECODER_STATUS_GOOD;

if (status & 0x03)
@@ -301,23 +280,23 @@
v = *(int*)arg;
if (decoder->norm != v) {

decoder->norm = v;
-
saa7110_write(decoder, 0x06, 0x00);
+
i2c_smbus_write_byte(client, 0x06, 0x00);

switch (v) {

case VIDEO_MODE_NTSC:
-
saa7110_write(decoder, 0x0D, 0x06);
-
saa7110_write(decoder, 0x11, 0x2C);
-
saa7110_write(decoder, 0x30, 0x81);
-
saa7110_write(decoder, 0x2A, 0xDF);
+
i2c_smbus_write_byte(client, 0x0D, 0x06);
+
i2c_smbus_write_byte(client, 0x11, 0x2C);
+
i2c_smbus_write_byte(client, 0x30, 0x81);
+
i2c_smbus_write_byte(client, 0x2A, 0xDF);

break;

case VIDEO_MODE_PAL:
-
saa7110_write(decoder, 0x0D, 0x06);
-
saa7110_write(decoder, 0x11, 0x59);
-
saa7110_write(decoder, 0x2E, 0x9A);
+
i2c_smbus_write_byte(client, 0x0D, 0x06);
+
i2c_smbus_write_byte(client, 0x11, 0x59);
+
i2c_smbus_write_byte(client, 0x2E, 0x9A);

break;

case VIDEO_MODE_SECAM:
-
saa7110_write(decoder, 0x0D, 0x07);
-
saa7110_write(decoder, 0x11, 0x59);
-
saa7110_write(decoder, 0x2E, 0x9A);
+
i2c_smbus_write_byte(client, 0x0D, 0x07);
+
i2c_smbus_write_byte(client, 0x11, 0x59);
+
i2c_smbus_write_byte(client, 0x2E, 0x9A);

break;

case VIDEO_MODE_AUTO:

*(int*)arg = determine_norm(device);
@@ -349,7 +328,7 @@
v = *(int*)arg;
if (decoder->enable != v) {

decoder->enable = v;
-
saa7110_write(decoder,0x0E, v ? 0x18 : 0x00);
+
i2c_smbus_write_byte(client,0x0E, v ? 0x18 : 0x00);
}
break;

@@ -360,22 +339,22 @@

if (decoder->bright != pic->brightness) {

/* We want 0 to 255 we get 0-65535 */

decoder->bright = pic->brightness;
-
saa7110_write(decoder, 0x19, decoder->bright >> 8);
+
i2c_smbus_write_byte(client, 0x19, decoder->bright >> 8);

}

if (decoder->contrast != pic->contrast) {

/* We want 0 to 127 we get 0-65535 */

decoder->contrast = pic->contrast;
-
saa7110_write(decoder, 0x13, decoder->contrast >> 9);
+
i2c_smbus_write_byte(client, 0x13, decoder->contrast >> 9);

}

if (decoder->sat != pic->colour) {

/* We want 0 to 127 we get 0-65535 */

decoder->sat = pic->colour;
-
saa7110_write(decoder, 0x12, decoder->sat >> 9);
+
i2c_smbus_write_byte(client, 0x12, decoder->sat >> 9);

}

if (decoder->hue != pic->hue) {

/* We want -128 to 127 we get 0-65535 */

decoder->hue = pic->hue;
-
saa7110_write(decoder, 0x07, (decoder->hue>>8)-128);
+
i2c_smbus_write_byte(client, 0x07, (decoder->hue>>8)-128);

}
}
break;
@@ -402,24 +381,30 @@

static struct i2c_driver i2c_driver_saa7110 =
{
-
"saa7110",
/* name */
-
+
IF_NAME,
/* name */
I2C_DRIVERID_VIDEODECODER, /* in i2c.h */
-
I2C_SAA7110, I2C_SAA7110+1, /* Addr range */
-
-
saa7110_attach,
+
I2C_DF_NOTIFY,
/* Addr range */
+
saa7110_probe,
saa7110_detach,
saa7110_command
};
+static struct i2c_client client_template = {
+
"saa7110_client",
+
-1,
+
0,
+
0,
+
NULL,
+
&i2c_driver_saa7110
+};

static int saa7110_init(void)
{
-
return i2c_register_driver(&i2c_driver_saa7110);
+
return i2c_add_driver(&i2c_driver_saa7110);
}

static void saa7110_exit(void)
{
-
i2c_unregister_driver(&i2c_driver_saa7110);
+
i2c_del_driver(&i2c_driver_saa7110);
}




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