diff options
Diffstat (limited to 'drivers/media/video/tea6415c.c')
| -rw-r--r-- | drivers/media/video/tea6415c.c | 131 |
1 files changed, 40 insertions, 91 deletions
diff --git a/drivers/media/video/tea6415c.c b/drivers/media/video/tea6415c.c index 421c144..cde092a 100644 --- a/drivers/media/video/tea6415c.c +++ b/drivers/media/video/tea6415c.c @@ -2,6 +2,7 @@ tea6415c - i2c-driver for the tea6415c by SGS Thomson Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de> + Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl> The tea6415c is a bus controlled video-matrix-switch with 8 inputs and 6 outputs. @@ -30,18 +31,18 @@ #include <linux/module.h> #include <linux/ioctl.h> #include <linux/i2c.h> - +#include <media/v4l2-common.h> +#include <media/v4l2-i2c-drv-legacy.h> #include "tea6415c.h" -static int debug; /* insmod parameter */ -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off device debugging (default:off)."); +MODULE_AUTHOR("Michael Hunold <michael@mihu.de>"); +MODULE_DESCRIPTION("tea6415c driver"); +MODULE_LICENSE("GPL"); -#define dprintk(args...) \ - do { if (debug) { printk("%s: %s()[%d]: ", KBUILD_MODNAME, __func__, __LINE__); printk(args); } } while (0) +static int debug; +module_param(debug, int, 0644); -#define TEA6415C_NUM_INPUTS 8 -#define TEA6415C_NUM_OUTPUTS 6 +MODULE_PARM_DESC(debug, "Debug level (0-1)"); /* addresses to scan, found only at 0x03 and/or 0x43 (7-bit) */ static unsigned short normal_i2c[] = { I2C_TEA6415C_1, I2C_TEA6415C_2, I2C_CLIENT_END }; @@ -49,60 +50,6 @@ static unsigned short normal_i2c[] = { I2C_TEA6415C_1, I2C_TEA6415C_2, I2C_CLIEN /* magic definition of all other variables and things */ I2C_CLIENT_INSMOD; -static struct i2c_driver driver; -static struct i2c_client client_template; - -/* this function is called by i2c_probe */ -static int detect(struct i2c_adapter *adapter, int address, int kind) -{ - struct i2c_client *client = NULL; - int err = 0; - - /* let's see whether this adapter can support what we need */ - if (0 == i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE)) { - return 0; - } - - /* allocate memory for client structure */ - client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); - if (!client) { - return -ENOMEM; - } - - /* fill client structure */ - memcpy(client, &client_template, sizeof(struct i2c_client)); - client->addr = address; - client->adapter = adapter; - - /* tell the i2c layer a new client has arrived */ - if (0 != (err = i2c_attach_client(client))) { - kfree(client); - return err; - } - - printk("tea6415c: detected @ 0x%02x on adapter %s\n", address, &client->adapter->name[0]); - - return 0; -} - -static int attach(struct i2c_adapter *adapter) -{ - /* let's see whether this is a know adapter we can attach to */ - if (adapter->id != I2C_HW_SAA7146) { - dprintk("refusing to probe on unknown adapter [name='%s',id=0x%x]\n", adapter->name, adapter->id); - return -ENODEV; - } - - return i2c_probe(adapter, &addr_data, &detect); -} - -static int detach(struct i2c_client *client) -{ - int ret = i2c_detach_client(client); - kfree(client); - return ret; -} - /* makes a connection between the input-pin 'i' and the output-pin 'o' for the tea6415c-client 'client' */ static int switch_matrix(struct i2c_client *client, int i, int o) @@ -110,7 +57,7 @@ static int switch_matrix(struct i2c_client *client, int i, int o) u8 byte = 0; int ret; - dprintk("adr:0x%02x, i:%d, o:%d\n", client->addr, i, o); + v4l_dbg(1, debug, client, "i=%d, o=%d\n", i, o); /* check if the pins are valid */ if (0 == ((1 == i || 3 == i || 5 == i || 6 == i || 8 == i || 10 == i || 20 == i || 11 == i) @@ -168,14 +115,14 @@ static int switch_matrix(struct i2c_client *client, int i, int o) ret = i2c_smbus_write_byte(client, byte); if (ret) { - dprintk("i2c_smbus_write_byte() failed, ret:%d\n", ret); + v4l_dbg(1, debug, client, + "i2c_smbus_write_byte() failed, ret:%d\n", ret); return -EIO; } - return ret; } -static int command(struct i2c_client *client, unsigned int cmd, void *arg) +static int tea6415c_command(struct i2c_client *client, unsigned cmd, void *arg) { struct tea6415c_multiplex *v = (struct tea6415c_multiplex *)arg; int result = 0; @@ -187,38 +134,40 @@ static int command(struct i2c_client *client, unsigned int cmd, void *arg) default: return -ENOIOCTLCMD; } - return result; } -static struct i2c_driver driver = { - .driver = { - .name = "tea6415c", - }, - .id = I2C_DRIVERID_TEA6415C, - .attach_adapter = attach, - .detach_client = detach, - .command = command, -}; - -static struct i2c_client client_template = { - .name = "tea6415c", - .driver = &driver, -}; - -static int __init this_module_init(void) +/* this function is called by i2c_probe */ +static int tea6415c_probe(struct i2c_client *client, + const struct i2c_device_id *id) { - return i2c_add_driver(&driver); + /* let's see whether this adapter can support what we need */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE)) + return 0; + + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); + return 0; } -static void __exit this_module_exit(void) +static int tea6415c_legacy_probe(struct i2c_adapter *adapter) { - i2c_del_driver(&driver); + /* Let's see whether this is a known adapter we can attach to. + Prevents conflicts with tvaudio.c. */ + return adapter->id == I2C_HW_SAA7146; } -module_init(this_module_init); -module_exit(this_module_exit); +static const struct i2c_device_id tea6415c_id[] = { + { "tea6415c", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tea6415c_id); -MODULE_AUTHOR("Michael Hunold <michael@mihu.de>"); -MODULE_DESCRIPTION("tea6415c driver"); -MODULE_LICENSE("GPL"); +static struct v4l2_i2c_driver_data v4l2_i2c_data = { + .name = "tea6415c", + .driverid = I2C_DRIVERID_TEA6415C, + .command = tea6415c_command, + .probe = tea6415c_probe, + .legacy_probe = tea6415c_legacy_probe, + .id_table = tea6415c_id, +}; |
