diff options
Diffstat (limited to 'drivers/media/video/tlv320aic23b.c')
| -rw-r--r-- | drivers/media/video/tlv320aic23b.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/drivers/media/video/tlv320aic23b.c b/drivers/media/video/tlv320aic23b.c deleted file mode 100644 index 5c95ecd09dc..00000000000 --- a/drivers/media/video/tlv320aic23b.c +++ /dev/null @@ -1,216 +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/videodev2.h> -#include <media/v4l2-device.h> -#include <media/v4l2-i2c-drv-legacy.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 { - struct v4l2_subdev sd; - u8 muted; -}; - -static inline struct tlv320aic23b_state *to_state(struct v4l2_subdev *sd) -{ - return container_of(sd, struct tlv320aic23b_state, sd); -} - -static int tlv320aic23b_write(struct v4l2_subdev *sd, int reg, u16 val) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - int i; - - if ((reg < 0 || reg > 9) && (reg != 15)) { - v4l2_err(sd, "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; - v4l2_err(sd, "I2C: cannot write %03x to register R%d\n", val, reg); - return -1; -} - -static int tlv320aic23b_s_clock_freq(struct v4l2_subdev *sd, u32 freq) -{ - switch (freq) { - case 32000: /* set sample rate to 32 kHz */ - tlv320aic23b_write(sd, 8, 0x018); - break; - case 44100: /* set sample rate to 44.1 kHz */ - tlv320aic23b_write(sd, 8, 0x022); - break; - case 48000: /* set sample rate to 48 kHz */ - tlv320aic23b_write(sd, 8, 0x000); - break; - default: - return -EINVAL; - } - return 0; -} - -static int tlv320aic23b_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) -{ - struct tlv320aic23b_state *state = to_state(sd); - - if (ctrl->id != V4L2_CID_AUDIO_MUTE) - return -EINVAL; - ctrl->value = state->muted; - return 0; -} - -static int tlv320aic23b_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) -{ - struct tlv320aic23b_state *state = to_state(sd); - - if (ctrl->id != V4L2_CID_AUDIO_MUTE) - return -EINVAL; - state->muted = ctrl->value; - tlv320aic23b_write(sd, 0, 0x180); /* mute both channels */ - /* set gain on both channels to +3.0 dB */ - if (!state->muted) - tlv320aic23b_write(sd, 0, 0x119); - return 0; -} - -static int tlv320aic23b_log_status(struct v4l2_subdev *sd) -{ - struct tlv320aic23b_state *state = to_state(sd); - - v4l2_info(sd, "Input: %s\n", state->muted ? "muted" : "active"); - return 0; -} - -static int tlv320aic23b_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 tlv320aic23b_core_ops = { - .log_status = tlv320aic23b_log_status, - .g_ctrl = tlv320aic23b_g_ctrl, - .s_ctrl = tlv320aic23b_s_ctrl, -}; - -static const struct v4l2_subdev_audio_ops tlv320aic23b_audio_ops = { - .s_clock_freq = tlv320aic23b_s_clock_freq, -}; - -static const struct v4l2_subdev_ops tlv320aic23b_ops = { - .core = &tlv320aic23b_core_ops, - .audio = &tlv320aic23b_audio_ops, -}; - -/* ----------------------------------------------------------------------- */ - -/* i2c implementation */ - -/* - * Generic i2c probe - * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' - */ - -static int tlv320aic23b_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct tlv320aic23b_state *state; - struct v4l2_subdev *sd; - - /* Check if the adapter supports the needed features */ - if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - return -EIO; - - v4l_info(client, "chip found @ 0x%x (%s)\n", - client->addr << 1, client->adapter->name); - - state = kzalloc(sizeof(struct tlv320aic23b_state), GFP_KERNEL); - if (state == NULL) - return -ENOMEM; - sd = &state->sd; - v4l2_i2c_subdev_init(sd, client, &tlv320aic23b_ops); - state->muted = 0; - - /* Initialize tlv320aic23b */ - - /* RESET */ - tlv320aic23b_write(sd, 15, 0x000); - /* turn off DAC & mic input */ - tlv320aic23b_write(sd, 6, 0x00A); - /* left-justified, 24-bit, master mode */ - tlv320aic23b_write(sd, 7, 0x049); - /* set gain on both channels to +3.0 dB */ - tlv320aic23b_write(sd, 0, 0x119); - /* set sample rate to 48 kHz */ - tlv320aic23b_write(sd, 8, 0x000); - /* activate digital interface */ - tlv320aic23b_write(sd, 9, 0x001); - return 0; -} - -static int tlv320aic23b_remove(struct i2c_client *client) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - - v4l2_device_unregister_subdev(sd); - kfree(to_state(sd)); - return 0; -} - -/* ----------------------------------------------------------------------- */ - -static const struct i2c_device_id tlv320aic23b_id[] = { - { "tlv320aic23b", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, tlv320aic23b_id); - -static struct v4l2_i2c_driver_data v4l2_i2c_data = { - .name = "tlv320aic23b", - .driverid = I2C_DRIVERID_TLV320AIC23B, - .command = tlv320aic23b_command, - .probe = tlv320aic23b_probe, - .remove = tlv320aic23b_remove, - .id_table = tlv320aic23b_id, -}; |