i2c: Add support for device alias names
[safe/jmp/linux-2.6] / drivers / media / video / saa7115.c
index bb6aa13..e684108 100644 (file)
@@ -45,6 +45,8 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-i2c-drv-legacy.h>
 #include <media/saa7115.h>
 #include <asm/div64.h>
 
@@ -55,7 +57,7 @@ MODULE_AUTHOR(  "Maxim Yevtyushkin, Kevin Thayer, Chris Kennedy, "
                "Hans Verkuil, Mauro Carvalho Chehab");
 MODULE_LICENSE("GPL");
 
-static int debug = 0;
+static int debug;
 module_param(debug, bool, 0644);
 
 MODULE_PARM_DESC(debug, "Debug level (0-1)");
@@ -80,7 +82,7 @@ struct saa711x_state {
        int sat;
        int width;
        int height;
-       enum v4l2_chip_ident ident;
+       u32 ident;
        u32 audclk_freq;
        u32 crystal_freq;
        u8 ucgc;
@@ -955,13 +957,13 @@ static void saa711x_set_v4lstd(struct i2c_client *client, v4l2_std_id std)
 
                if (std == V4L2_STD_PAL_M) {
                        reg |= 0x30;
-               } else if (std == V4L2_STD_PAL_N) {
+               } else if (std == V4L2_STD_PAL_Nc) {
                        reg |= 0x20;
                } else if (std == V4L2_STD_PAL_60) {
                        reg |= 0x10;
                } else if (std == V4L2_STD_NTSC_M_JP) {
                        reg |= 0x40;
-               } else if (std == V4L2_STD_SECAM) {
+               } else if (std & V4L2_STD_SECAM) {
                        reg |= 0x50;
                }
                saa711x_write(client, R_0E_CHROMA_CNTL_1, reg);
@@ -1229,10 +1231,9 @@ static void saa711x_decode_vbi_line(struct i2c_client *client,
 
 /* ============ SAA7115 AUDIO settings (end) ============= */
 
-static int saa711x_command(struct i2c_client *client, unsigned int cmd, void *arg)
+static int saa7115_command(struct i2c_client *client, unsigned int cmd, void *arg)
 {
        struct saa711x_state *state = i2c_get_clientdata(client);
-       int *iarg = arg;
 
        /* ioctls to allow direct access to the saa7115 registers for testing */
        switch (cmd) {
@@ -1388,6 +1389,9 @@ static int saa711x_command(struct i2c_client *client, unsigned int cmd, void *ar
        {
                struct v4l2_sliced_vbi_data *data = arg;
 
+               /* Note: the internal field ID is inverted for NTSC,
+                  so data->field 0 maps to the saa7115 even field,
+                  whereas for PAL it maps to the saa7115 odd field. */
                switch (data->id) {
                case V4L2_SLICED_WSS_625:
                        if (saa711x_read(client, 0x6b) & 0xc0)
@@ -1398,17 +1402,17 @@ static int saa711x_command(struct i2c_client *client, unsigned int cmd, void *ar
                case V4L2_SLICED_CAPTION_525:
                        if (data->field == 0) {
                                /* CC */
-                               if (saa711x_read(client, 0x66) & 0xc0)
+                               if (saa711x_read(client, 0x66) & 0x30)
                                        return -EIO;
-                               data->data[0] = saa711x_read(client, 0x67);
-                               data->data[1] = saa711x_read(client, 0x68);
+                               data->data[0] = saa711x_read(client, 0x69);
+                               data->data[1] = saa711x_read(client, 0x6a);
                                return 0;
                        }
                        /* XDS */
-                       if (saa711x_read(client, 0x66) & 0x30)
+                       if (saa711x_read(client, 0x66) & 0xc0)
                                return -EIO;
-                       data->data[0] = saa711x_read(client, 0x69);
-                       data->data[1] = saa711x_read(client, 0x6a);
+                       data->data[0] = saa711x_read(client, 0x67);
+                       data->data[1] = saa711x_read(client, 0x68);
                        return 0;
                default:
                        return -EINVAL;
@@ -1418,31 +1422,24 @@ static int saa711x_command(struct i2c_client *client, unsigned int cmd, void *ar
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
        case VIDIOC_DBG_G_REGISTER:
-       {
-               struct v4l2_register *reg = arg;
-
-               if (reg->i2c_id != I2C_DRIVERID_SAA711X)
-                       return -EINVAL;
-               reg->val = saa711x_read(client, reg->reg & 0xff);
-               break;
-       }
-
        case VIDIOC_DBG_S_REGISTER:
        {
                struct v4l2_register *reg = arg;
 
-               if (reg->i2c_id != I2C_DRIVERID_SAA711X)
+               if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
                        return -EINVAL;
                if (!capable(CAP_SYS_ADMIN))
                        return -EPERM;
-               saa711x_write(client, reg->reg & 0xff, reg->val & 0xff);
+               if (cmd == VIDIOC_DBG_G_REGISTER)
+                       reg->val = saa711x_read(client, reg->reg & 0xff);
+               else
+                       saa711x_write(client, reg->reg & 0xff, reg->val & 0xff);
                break;
        }
 #endif
 
-       case VIDIOC_INT_G_CHIP_IDENT:
-               *iarg = state->ident;
-               break;
+       case VIDIOC_G_CHIP_IDENT:
+               return v4l2_chip_ident_i2c_client(client, arg, state->ident, 0);
 
        default:
                return -EINVAL;
@@ -1453,26 +1450,18 @@ static int saa711x_command(struct i2c_client *client, unsigned int cmd, void *ar
 
 /* ----------------------------------------------------------------------- */
 
-static struct i2c_driver i2c_driver_saa711x;
-
-static int saa711x_attach(struct i2c_adapter *adapter, int address, int kind)
+static int saa7115_probe(struct i2c_client *client,
+                        const struct i2c_device_id *id)
 {
-       struct i2c_client *client;
        struct saa711x_state *state;
        int     i;
        char    name[17];
        u8 chip_id;
 
        /* 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 -EIO;
 
-       client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
-       if (client == 0)
-               return -ENOMEM;
-       client->addr = address;
-       client->adapter = adapter;
-       client->driver = &i2c_driver_saa711x;
        snprintf(client->name, sizeof(client->name) - 1, "saa7115");
 
        for (i = 0; i < 0x0f; i++) {
@@ -1489,17 +1478,16 @@ static int saa711x_attach(struct i2c_adapter *adapter, int address, int kind)
        /* Check whether this chip is part of the saa711x series */
        if (memcmp(name, "1f711", 5)) {
                v4l_dbg(1, debug, client, "chip found @ 0x%x (ID %s) does not match a known saa711x chip.\n",
-                       address << 1, name);
-               return 0;
+                       client->addr << 1, name);
+               return -ENODEV;
        }
 
        snprintf(client->name, sizeof(client->name) - 1, "saa711%d",chip_id);
-       v4l_info(client, "saa711%d found (%s) @ 0x%x (%s)\n", chip_id, name, address << 1, adapter->name);
+       v4l_info(client, "saa711%d found (%s) @ 0x%x (%s)\n", chip_id, name, client->addr << 1, client->adapter->name);
 
        state = kzalloc(sizeof(struct saa711x_state), GFP_KERNEL);
        i2c_set_clientdata(client, state);
        if (state == NULL) {
-               kfree(client);
                return -ENOMEM;
        }
        state->input = -1;
@@ -1552,59 +1540,25 @@ static int saa711x_attach(struct i2c_adapter *adapter, int address, int kind)
        saa711x_writeregs(client, saa7115_init_misc);
        saa711x_set_v4lstd(client, V4L2_STD_NTSC);
 
-       i2c_attach_client(client);
-
        v4l_dbg(1, debug, client, "status: (1E) 0x%02x, (1F) 0x%02x\n",
                saa711x_read(client, R_1E_STATUS_BYTE_1_VD_DEC), saa711x_read(client, R_1F_STATUS_BYTE_2_VD_DEC));
-
        return 0;
 }
 
-static int saa711x_probe(struct i2c_adapter *adapter)
-{
-       if (adapter->class & I2C_CLASS_TV_ANALOG || adapter->class & I2C_CLASS_TV_DIGITAL)
-               return i2c_probe(adapter, &addr_data, &saa711x_attach);
-       return 0;
-}
+/* ----------------------------------------------------------------------- */
 
-static int saa711x_detach(struct i2c_client *client)
+static int saa7115_remove(struct i2c_client *client)
 {
-       struct saa711x_state *state = i2c_get_clientdata(client);
-       int err;
-
-       err = i2c_detach_client(client);
-       if (err) {
-               return err;
-       }
-
-       kfree(state);
-       kfree(client);
+       kfree(i2c_get_clientdata(client));
        return 0;
 }
 
-/* ----------------------------------------------------------------------- */
-
-/* i2c implementation */
-static struct i2c_driver i2c_driver_saa711x = {
-       .driver = {
-               .name = "saa7115",
-       },
-       .id = I2C_DRIVERID_SAA711X,
-       .attach_adapter = saa711x_probe,
-       .detach_client = saa711x_detach,
-       .command = saa711x_command,
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
+       .name = "saa7115",
+       .driverid = I2C_DRIVERID_SAA711X,
+       .command = saa7115_command,
+       .probe = saa7115_probe,
+       .remove = saa7115_remove,
+       .legacy_class = I2C_CLASS_TV_ANALOG | I2C_CLASS_TV_DIGITAL,
 };
 
-
-static int __init saa711x_init_module(void)
-{
-       return i2c_add_driver(&i2c_driver_saa711x);
-}
-
-static void __exit saa711x_cleanup_module(void)
-{
-       i2c_del_driver(&i2c_driver_saa711x);
-}
-
-module_init(saa711x_init_module);
-module_exit(saa711x_cleanup_module);