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Diffstat (limited to 'drivers/media/video/tda9840.c')
-rw-r--r--drivers/media/video/tda9840.c255
1 files changed, 0 insertions, 255 deletions
diff --git a/drivers/media/video/tda9840.c b/drivers/media/video/tda9840.c
deleted file mode 100644
index 2437c1a269c..00000000000
--- a/drivers/media/video/tda9840.c
+++ /dev/null
@@ -1,255 +0,0 @@
- /*
- tda9840 - i2c-driver for the tda9840 by SGS Thomson
-
- Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de>
-
- The tda9840 is a stereo/dual sound processor with digital
- identification. It can be found at address 0x84 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 as 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 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
-#include <linux/module.h>
-#include <linux/ioctl.h>
-#include <linux/i2c.h>
-
-#include "tda9840.h"
-
-static int debug; /* insmod parameter */
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off device debugging (default:off).");
-
-#define dprintk(args...) \
- do { if (debug) { printk("%s: %s()[%d]: ", KBUILD_MODNAME, __func__, __LINE__); printk(args); } } while (0)
-
-#define SWITCH 0x00
-#define LEVEL_ADJUST 0x02
-#define STEREO_ADJUST 0x03
-#define TEST 0x04
-
-/* addresses to scan, found only at 0x42 (7-Bit) */
-static unsigned short normal_i2c[] = { I2C_ADDR_TDA9840, I2C_CLIENT_END };
-
-/* magic definition of all other variables and things */
-I2C_CLIENT_INSMOD;
-
-static struct i2c_driver driver;
-static struct i2c_client client_template;
-
-static int command(struct i2c_client *client, unsigned int cmd, void *arg)
-{
- int result;
- int byte = *(int *)arg;
-
- switch (cmd) {
- case TDA9840_SWITCH:
-
- dprintk("TDA9840_SWITCH: 0x%02x\n", byte);
-
- if (byte != TDA9840_SET_MONO
- && byte != TDA9840_SET_MUTE
- && byte != TDA9840_SET_STEREO
- && byte != TDA9840_SET_LANG1
- && byte != TDA9840_SET_LANG2
- && byte != TDA9840_SET_BOTH
- && byte != TDA9840_SET_BOTH_R
- && byte != TDA9840_SET_EXTERNAL) {
- return -EINVAL;
- }
-
- result = i2c_smbus_write_byte_data(client, SWITCH, byte);
- if (result)
- dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
- break;
-
- case TDA9840_LEVEL_ADJUST:
-
- dprintk("TDA9840_LEVEL_ADJUST: %d\n", byte);
-
- /* check for correct range */
- if (byte > 25 || byte < -20)
- return -EINVAL;
-
- /* calculate actual value to set, see specs, page 18 */
- byte /= 5;
- if (0 < byte)
- byte += 0x8;
- else
- byte = -byte;
-
- result = i2c_smbus_write_byte_data(client, LEVEL_ADJUST, byte);
- if (result)
- dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
- break;
-
- case TDA9840_STEREO_ADJUST:
-
- dprintk("TDA9840_STEREO_ADJUST: %d\n", byte);
-
- /* check for correct range */
- if (byte > 25 || byte < -24)
- return -EINVAL;
-
- /* calculate actual value to set */
- byte /= 5;
- if (0 < byte)
- byte += 0x20;
- else
- byte = -byte;
-
- result = i2c_smbus_write_byte_data(client, STEREO_ADJUST, byte);
- if (result)
- dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
- break;
-
- case TDA9840_DETECT: {
- int *ret = (int *)arg;
-
- byte = i2c_smbus_read_byte_data(client, STEREO_ADJUST);
- if (byte == -1) {
- dprintk("i2c_smbus_read_byte_data() failed\n");
- return -EIO;
- }
-
- if (0 != (byte & 0x80)) {
- dprintk("TDA9840_DETECT: register contents invalid\n");
- return -EINVAL;
- }
-
- dprintk("TDA9840_DETECT: byte: 0x%02x\n", byte);
- *ret = ((byte & 0x60) >> 5);
- result = 0;
- break;
- }
- case TDA9840_TEST:
- dprintk("TDA9840_TEST: 0x%02x\n", byte);
-
- /* mask out irrelevant bits */
- byte &= 0x3;
-
- result = i2c_smbus_write_byte_data(client, TEST, byte);
- if (result)
- dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
- break;
- default:
- return -ENOIOCTLCMD;
- }
-
- if (result)
- return -EIO;
-
- return 0;
-}
-
-static int detect(struct i2c_adapter *adapter, int address, int kind)
-{
- struct i2c_client *client;
- int result = 0;
-
- int byte = 0x0;
-
- /* let's see whether this adapter can support what we need */
- if (0 == i2c_check_functionality(adapter,
- I2C_FUNC_SMBUS_READ_BYTE_DATA |
- I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) {
- return 0;
- }
-
- /* allocate memory for client structure */
- client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (!client) {
- printk("not enough kernel memory\n");
- 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 != (result = i2c_attach_client(client))) {
- kfree(client);
- return result;
- }
-
- /* set initial values for level & stereo - adjustment, mode */
- byte = 0;
- result = command(client, TDA9840_LEVEL_ADJUST, &byte);
- result += command(client, TDA9840_STEREO_ADJUST, &byte);
- byte = TDA9840_SET_MONO;
- result = command(client, TDA9840_SWITCH, &byte);
- if (result) {
- dprintk("could not initialize tda9840\n");
- return -ENODEV;
- }
-
- printk("tda9840: 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;
-}
-
-static struct i2c_driver driver = {
- .driver = {
- .name = "tda9840",
- },
- .id = I2C_DRIVERID_TDA9840,
- .attach_adapter = attach,
- .detach_client = detach,
- .command = command,
-};
-
-static struct i2c_client client_template = {
- .name = "tda9840",
- .driver = &driver,
-};
-
-static int __init this_module_init(void)
-{
- return i2c_add_driver(&driver);
-}
-
-static void __exit this_module_exit(void)
-{
- i2c_del_driver(&driver);
-}
-
-module_init(this_module_init);
-module_exit(this_module_exit);
-
-MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
-MODULE_DESCRIPTION("tda9840 driver");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 17:00:38 +0000