diff options
Diffstat (limited to 'drivers/media/video/tea6415c.c')
| -rw-r--r-- | drivers/media/video/tea6415c.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/drivers/media/video/tea6415c.c b/drivers/media/video/tea6415c.c deleted file mode 100644 index 7519fd1f57e..00000000000 --- a/drivers/media/video/tea6415c.c +++ /dev/null @@ -1,200 +0,0 @@ - /* - 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. - It is cascadable, i.e. it can be found at the addresses - 0x86 and 0x06 on the i2c-bus. - - For detailed informations download the specifications directly - from SGS Thomson at http://www.st.com - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License vs published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mvss Ave, Cambridge, MA 02139, USA. - */ - - -#include <linux/module.h> -#include <linux/ioctl.h> -#include <linux/i2c.h> -#include <media/v4l2-device.h> -#include <media/v4l2-i2c-drv-legacy.h> -#include "tea6415c.h" - -MODULE_AUTHOR("Michael Hunold <michael@mihu.de>"); -MODULE_DESCRIPTION("tea6415c driver"); -MODULE_LICENSE("GPL"); - -static int debug; -module_param(debug, int, 0644); - -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 }; - -/* magic definition of all other variables and things */ -I2C_CLIENT_INSMOD; - -/* 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) -{ - u8 byte = 0; - int ret; - - 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) - && (18 == o || 17 == o || 16 == o || 15 == o || 14 == o || 13 == o))) - return -1; - - /* to understand this, have a look at the tea6415c-specs (p.5) */ - switch (o) { - case 18: - byte = 0x00; - break; - case 14: - byte = 0x20; - break; - case 16: - byte = 0x10; - break; - case 17: - byte = 0x08; - break; - case 15: - byte = 0x18; - break; - case 13: - byte = 0x28; - break; - }; - - switch (i) { - case 5: - byte |= 0x00; - break; - case 8: - byte |= 0x04; - break; - case 3: - byte |= 0x02; - break; - case 20: - byte |= 0x06; - break; - case 6: - byte |= 0x01; - break; - case 10: - byte |= 0x05; - break; - case 1: - byte |= 0x03; - break; - case 11: - byte |= 0x07; - break; - }; - - ret = i2c_smbus_write_byte(client, byte); - if (ret) { - v4l_dbg(1, debug, client, - "i2c_smbus_write_byte() failed, ret:%d\n", ret); - return -EIO; - } - return ret; -} - -static long tea6415c_ioctl(struct v4l2_subdev *sd, unsigned cmd, void *arg) -{ - if (cmd == TEA6415C_SWITCH) { - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct tea6415c_multiplex *v = (struct tea6415c_multiplex *)arg; - - return switch_matrix(client, v->in, v->out); - } - return -ENOIOCTLCMD; -} - -static int tea6415c_command(struct i2c_client *client, unsigned cmd, void *arg) -{ - return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg); -} - -/* ----------------------------------------------------------------------- */ - -static const struct v4l2_subdev_core_ops tea6415c_core_ops = { - .ioctl = tea6415c_ioctl, -}; - -static const struct v4l2_subdev_ops tea6415c_ops = { - .core = &tea6415c_core_ops, -}; - -/* this function is called by i2c_probe */ -static int tea6415c_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct v4l2_subdev *sd; - - /* 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); - sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL); - if (sd == NULL) - return -ENOMEM; - v4l2_i2c_subdev_init(sd, client, &tea6415c_ops); - return 0; -} - -static int tea6415c_remove(struct i2c_client *client) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - - v4l2_device_unregister_subdev(sd); - kfree(sd); - return 0; -} - -static int tea6415c_legacy_probe(struct i2c_adapter *adapter) -{ - /* Let's see whether this is a known adapter we can attach to. - Prevents conflicts with tvaudio.c. */ - return adapter->id == I2C_HW_SAA7146; -} - -static const struct i2c_device_id tea6415c_id[] = { - { "tea6415c", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, tea6415c_id); - -static struct v4l2_i2c_driver_data v4l2_i2c_data = { - .name = "tea6415c", - .driverid = I2C_DRIVERID_TEA6415C, - .command = tea6415c_command, - .probe = tea6415c_probe, - .remove = tea6415c_remove, - .legacy_probe = tea6415c_legacy_probe, - .id_table = tea6415c_id, -}; |