diff options
Diffstat (limited to 'drivers/media/video/tlv320aic23b.c')
| -rw-r--r-- | drivers/media/video/tlv320aic23b.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/drivers/media/video/tlv320aic23b.c b/drivers/media/video/tlv320aic23b.c deleted file mode 100644 index 76b2e96429d..00000000000 --- a/drivers/media/video/tlv320aic23b.c +++ /dev/null @@ -1,217 +0,0 @@ -/* - * tlv320aic23b - driver version 0.0.1 - * - * Copyright (C) 2006 Scott Alfter <salfter@ssai.us> - * - * Based on wm8775 driver - * - * Copyright (C) 2004 Ulf Eklund <ivtv at eklund.to> - * Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl> - * - * 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/types.h> -#include <linux/ioctl.h> -#include <asm/uaccess.h> -#include <linux/i2c.h> -#include <linux/i2c-id.h> -#include <linux/videodev.h> -#include <media/v4l2-common.h> - -MODULE_DESCRIPTION("tlv320aic23b driver"); -MODULE_AUTHOR("Scott Alfter, Ulf Eklund, Hans Verkuil"); -MODULE_LICENSE("GPL"); - -static unsigned short normal_i2c[] = { 0x34 >> 1, I2C_CLIENT_END }; - - -I2C_CLIENT_INSMOD; - -/* ----------------------------------------------------------------------- */ - -struct tlv320aic23b_state { - u8 muted; -}; - -static int tlv320aic23b_write(struct i2c_client *client, int reg, u16 val) -{ - int i; - - if ((reg < 0 || reg > 9) && (reg != 15)) { - v4l_err(client, "Invalid register R%d\n", reg); - return -1; - } - - for (i = 0; i < 3; i++) { - if (i2c_smbus_write_byte_data(client, (reg << 1) | - (val >> 8), val & 0xff) == 0) { - return 0; - } - } - v4l_err(client, "I2C: cannot write %03x to register R%d\n", val, reg); - return -1; -} - -static int tlv320aic23b_command(struct i2c_client *client, unsigned int cmd, - void *arg) -{ - struct tlv320aic23b_state *state = i2c_get_clientdata(client); - struct v4l2_control *ctrl = arg; - u32* freq = arg; - - switch (cmd) { - case VIDIOC_INT_AUDIO_CLOCK_FREQ: - switch (*freq) { - case 32000: /* set sample rate to 32 kHz */ - tlv320aic23b_write(client, 8, 0x018); - break; - case 44100: /* set sample rate to 44.1 kHz */ - tlv320aic23b_write(client, 8, 0x022); - break; - case 48000: /* set sample rate to 48 kHz */ - tlv320aic23b_write(client, 8, 0x000); - break; - default: - return -EINVAL; - } - break; - - case VIDIOC_G_CTRL: - if (ctrl->id != V4L2_CID_AUDIO_MUTE) - return -EINVAL; - ctrl->value = state->muted; - break; - - case VIDIOC_S_CTRL: - if (ctrl->id != V4L2_CID_AUDIO_MUTE) - return -EINVAL; - state->muted = ctrl->value; - tlv320aic23b_write(client, 0, 0x180); /* mute both channels */ - /* set gain on both channels to +3.0 dB */ - if (!state->muted) - tlv320aic23b_write(client, 0, 0x119); - break; - - case VIDIOC_LOG_STATUS: - v4l_info(client, "Input: %s\n", - state->muted ? "muted" : "active"); - break; - - default: - return -EINVAL; - } - return 0; -} - -/* ----------------------------------------------------------------------- */ - -/* i2c implementation */ - -/* - * Generic i2c probe - * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' - */ - -static struct i2c_driver i2c_driver; - -static int tlv320aic23b_attach(struct i2c_adapter *adapter, int address, int kind) -{ - struct i2c_client *client; - struct tlv320aic23b_state *state; - - /* Check if the adapter supports the needed features */ - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - return 0; - - client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); - if (client == 0) - return -ENOMEM; - - client->addr = address; - client->adapter = adapter; - client->driver = &i2c_driver; - snprintf(client->name, sizeof(client->name) - 1, "tlv320aic23b"); - - v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name); - - state = kmalloc(sizeof(struct tlv320aic23b_state), GFP_KERNEL); - if (state == NULL) { - kfree(client); - return -ENOMEM; - } - state->muted = 0; - i2c_set_clientdata(client, state); - - /* initialize tlv320aic23b */ - tlv320aic23b_write(client, 15, 0x000); /* RESET */ - tlv320aic23b_write(client, 6, 0x00A); /* turn off DAC & mic input */ - tlv320aic23b_write(client, 7, 0x049); /* left-justified, 24-bit, master mode */ - tlv320aic23b_write(client, 0, 0x119); /* set gain on both channels to +3.0 dB */ - tlv320aic23b_write(client, 8, 0x000); /* set sample rate to 48 kHz */ - tlv320aic23b_write(client, 9, 0x001); /* activate digital interface */ - - i2c_attach_client(client); - - return 0; -} - -static int tlv320aic23b_probe(struct i2c_adapter *adapter) -{ - if (adapter->class & I2C_CLASS_TV_ANALOG) - return i2c_probe(adapter, &addr_data, tlv320aic23b_attach); - return 0; -} - -static int tlv320aic23b_detach(struct i2c_client *client) -{ - int err; - - err = i2c_detach_client(client); - if (err) { - return err; - } - kfree(client); - - return 0; -} - -/* ----------------------------------------------------------------------- */ - -/* i2c implementation */ -static struct i2c_driver i2c_driver = { - .driver = { - .name = "tlv320aic23b", - }, - .id = I2C_DRIVERID_TLV320AIC23B, - .attach_adapter = tlv320aic23b_probe, - .detach_client = tlv320aic23b_detach, - .command = tlv320aic23b_command, -}; - - -static int __init tlv320aic23b_init_module(void) -{ - return i2c_add_driver(&i2c_driver); -} - -static void __exit tlv320aic23b_cleanup_module(void) -{ - i2c_del_driver(&i2c_driver); -} - -module_init(tlv320aic23b_init_module); -module_exit(tlv320aic23b_cleanup_module); |