diff options
Diffstat (limited to 'drivers/media/video/wm8775.c')
| -rw-r--r-- | drivers/media/video/wm8775.c | 276 |
1 files changed, 0 insertions, 276 deletions
diff --git a/drivers/media/video/wm8775.c b/drivers/media/video/wm8775.c deleted file mode 100644 index 53fcd42843e..00000000000 --- a/drivers/media/video/wm8775.c +++ /dev/null @@ -1,276 +0,0 @@ -/* - * wm8775 - driver version 0.0.1 - * - * Copyright (C) 2004 Ulf Eklund <ivtv at eklund.to> - * - * Based on saa7115 driver - * - * Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl> - * - Cleanup - * - V4L2 API update - * - sound fixes - * - * 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-chip-ident.h> -#include <media/v4l2-i2c-drv-legacy.h> - -MODULE_DESCRIPTION("wm8775 driver"); -MODULE_AUTHOR("Ulf Eklund, Hans Verkuil"); -MODULE_LICENSE("GPL"); - -static unsigned short normal_i2c[] = { 0x36 >> 1, I2C_CLIENT_END }; - -I2C_CLIENT_INSMOD; - - -/* ----------------------------------------------------------------------- */ - -enum { - R7 = 7, R11 = 11, - R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R23 = 23, - TOT_REGS -}; - -struct wm8775_state { - struct v4l2_subdev sd; - u8 input; /* Last selected input (0-0xf) */ - u8 muted; -}; - -static inline struct wm8775_state *to_state(struct v4l2_subdev *sd) -{ - return container_of(sd, struct wm8775_state, sd); -} - -static int wm8775_write(struct v4l2_subdev *sd, int reg, u16 val) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - int i; - - if (reg < 0 || reg >= TOT_REGS) { - 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 wm8775_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route) -{ - struct wm8775_state *state = to_state(sd); - - /* There are 4 inputs and one output. Zero or more inputs - are multiplexed together to the output. Hence there are - 16 combinations. - If only one input is active (the normal case) then the - input values 1, 2, 4 or 8 should be used. */ - if (route->input > 15) { - v4l2_err(sd, "Invalid input %d.\n", route->input); - return -EINVAL; - } - state->input = route->input; - if (state->muted) - return 0; - wm8775_write(sd, R21, 0x0c0); - wm8775_write(sd, R14, 0x1d4); - wm8775_write(sd, R15, 0x1d4); - wm8775_write(sd, R21, 0x100 + state->input); - return 0; -} - -static int wm8775_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) -{ - struct wm8775_state *state = to_state(sd); - - if (ctrl->id != V4L2_CID_AUDIO_MUTE) - return -EINVAL; - ctrl->value = state->muted; - return 0; -} - -static int wm8775_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) -{ - struct wm8775_state *state = to_state(sd); - - if (ctrl->id != V4L2_CID_AUDIO_MUTE) - return -EINVAL; - state->muted = ctrl->value; - wm8775_write(sd, R21, 0x0c0); - wm8775_write(sd, R14, 0x1d4); - wm8775_write(sd, R15, 0x1d4); - if (!state->muted) - wm8775_write(sd, R21, 0x100 + state->input); - return 0; -} - -static int wm8775_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - - return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_WM8775, 0); -} - -static int wm8775_log_status(struct v4l2_subdev *sd) -{ - struct wm8775_state *state = to_state(sd); - - v4l2_info(sd, "Input: %d%s\n", state->input, - state->muted ? " (muted)" : ""); - return 0; -} - -static int wm8775_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq) -{ - struct wm8775_state *state = to_state(sd); - - /* If I remove this, then it can happen that I have no - sound the first time I tune from static to a valid channel. - It's difficult to reproduce and is almost certainly related - to the zero cross detect circuit. */ - wm8775_write(sd, R21, 0x0c0); - wm8775_write(sd, R14, 0x1d4); - wm8775_write(sd, R15, 0x1d4); - wm8775_write(sd, R21, 0x100 + state->input); - return 0; -} - -static int wm8775_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 wm8775_core_ops = { - .log_status = wm8775_log_status, - .g_chip_ident = wm8775_g_chip_ident, - .g_ctrl = wm8775_g_ctrl, - .s_ctrl = wm8775_s_ctrl, -}; - -static const struct v4l2_subdev_tuner_ops wm8775_tuner_ops = { - .s_frequency = wm8775_s_frequency, -}; - -static const struct v4l2_subdev_audio_ops wm8775_audio_ops = { - .s_routing = wm8775_s_routing, -}; - -static const struct v4l2_subdev_ops wm8775_ops = { - .core = &wm8775_core_ops, - .tuner = &wm8775_tuner_ops, - .audio = &wm8775_audio_ops, -}; - -/* ----------------------------------------------------------------------- */ - -/* i2c implementation */ - -/* - * Generic i2c probe - * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' - */ - -static int wm8775_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct wm8775_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%02x (%s)\n", - client->addr << 1, client->adapter->name); - - state = kmalloc(sizeof(struct wm8775_state), GFP_KERNEL); - if (state == NULL) - return -ENOMEM; - sd = &state->sd; - v4l2_i2c_subdev_init(sd, client, &wm8775_ops); - state->input = 2; - state->muted = 0; - - /* Initialize wm8775 */ - - /* RESET */ - wm8775_write(sd, R23, 0x000); - /* Disable zero cross detect timeout */ - wm8775_write(sd, R7, 0x000); - /* Left justified, 24-bit mode */ - wm8775_write(sd, R11, 0x021); - /* Master mode, clock ratio 256fs */ - wm8775_write(sd, R12, 0x102); - /* Powered up */ - wm8775_write(sd, R13, 0x000); - /* ADC gain +2.5dB, enable zero cross */ - wm8775_write(sd, R14, 0x1d4); - /* ADC gain +2.5dB, enable zero cross */ - wm8775_write(sd, R15, 0x1d4); - /* ALC Stereo, ALC target level -1dB FS max gain +8dB */ - wm8775_write(sd, R16, 0x1bf); - /* Enable gain control, use zero cross detection, - ALC hold time 42.6 ms */ - wm8775_write(sd, R17, 0x185); - /* ALC gain ramp up delay 34 s, ALC gain ramp down delay 33 ms */ - wm8775_write(sd, R18, 0x0a2); - /* Enable noise gate, threshold -72dBfs */ - wm8775_write(sd, R19, 0x005); - /* Transient window 4ms, lower PGA gain limit -1dB */ - wm8775_write(sd, R20, 0x07a); - /* LRBOTH = 1, use input 2. */ - wm8775_write(sd, R21, 0x102); - return 0; -} - -static int wm8775_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 wm8775_id[] = { - { "wm8775", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, wm8775_id); - -static struct v4l2_i2c_driver_data v4l2_i2c_data = { - .name = "wm8775", - .driverid = I2C_DRIVERID_WM8775, - .command = wm8775_command, - .probe = wm8775_probe, - .remove = wm8775_remove, - .id_table = wm8775_id, -}; |