diff options
Diffstat (limited to 'drivers/media/video/wm8775.c')
| -rw-r--r-- | drivers/media/video/wm8775.c | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/drivers/media/video/wm8775.c b/drivers/media/video/wm8775.c deleted file mode 100644 index bee77ea9f49e..000000000000 --- a/drivers/media/video/wm8775.c +++ /dev/null @@ -1,342 +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/slab.h> -#include <linux/ioctl.h> -#include <asm/uaccess.h> -#include <linux/i2c.h> -#include <linux/videodev2.h> -#include <media/v4l2-device.h> -#include <media/v4l2-chip-ident.h> -#include <media/v4l2-ctrls.h> -#include <media/wm8775.h> - -MODULE_DESCRIPTION("wm8775 driver"); -MODULE_AUTHOR("Ulf Eklund, Hans Verkuil"); -MODULE_LICENSE("GPL"); - - - -/* ----------------------------------------------------------------------- */ - -enum { - R7 = 7, R11 = 11, - R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R23 = 23, - TOT_REGS -}; - -#define ALC_HOLD 0x85 /* R17: use zero cross detection, ALC hold time 42.6 ms */ -#define ALC_EN 0x100 /* R17: ALC enable */ - -struct wm8775_state { - struct v4l2_subdev sd; - struct v4l2_ctrl_handler hdl; - struct v4l2_ctrl *mute; - struct v4l2_ctrl *vol; - struct v4l2_ctrl *bal; - struct v4l2_ctrl *loud; - u8 input; /* Last selected input (0-0xf) */ -}; - -static inline struct wm8775_state *to_state(struct v4l2_subdev *sd) -{ - return container_of(sd, struct wm8775_state, sd); -} - -static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) -{ - return &container_of(ctrl->handler, struct wm8775_state, hdl)->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 void wm8775_set_audio(struct v4l2_subdev *sd, int quietly) -{ - struct wm8775_state *state = to_state(sd); - u8 vol_l, vol_r; - int muted = 0 != state->mute->val; - u16 volume = (u16)state->vol->val; - u16 balance = (u16)state->bal->val; - - /* normalize ( 65535 to 0 -> 255 to 0 (+24dB to -103dB) ) */ - vol_l = (min(65536 - balance, 32768) * volume) >> 23; - vol_r = (min(balance, (u16)32768) * volume) >> 23; - - /* Mute */ - if (muted || quietly) - wm8775_write(sd, R21, 0x0c0 | state->input); - - wm8775_write(sd, R14, vol_l | 0x100); /* 0x100= Left channel ADC zero cross enable */ - wm8775_write(sd, R15, vol_r | 0x100); /* 0x100= Right channel ADC zero cross enable */ - - /* Un-mute */ - if (!muted) - wm8775_write(sd, R21, state->input); -} - -static int wm8775_s_routing(struct v4l2_subdev *sd, - u32 input, u32 output, u32 config) -{ - 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 (input > 15) { - v4l2_err(sd, "Invalid input %d.\n", input); - return -EINVAL; - } - state->input = input; - if (!v4l2_ctrl_g_ctrl(state->mute)) - return 0; - if (!v4l2_ctrl_g_ctrl(state->vol)) - return 0; - if (!v4l2_ctrl_g_ctrl(state->bal)) - return 0; - wm8775_set_audio(sd, 1); - return 0; -} - -static int wm8775_s_ctrl(struct v4l2_ctrl *ctrl) -{ - struct v4l2_subdev *sd = to_sd(ctrl); - - switch (ctrl->id) { - case V4L2_CID_AUDIO_MUTE: - case V4L2_CID_AUDIO_VOLUME: - case V4L2_CID_AUDIO_BALANCE: - wm8775_set_audio(sd, 0); - return 0; - case V4L2_CID_AUDIO_LOUDNESS: - wm8775_write(sd, R17, (ctrl->val ? ALC_EN : 0) | ALC_HOLD); - return 0; - } - return -EINVAL; -} - -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\n", state->input); - v4l2_ctrl_handler_log_status(&state->hdl, sd->name); - return 0; -} - -static int wm8775_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq) -{ - wm8775_set_audio(sd, 0); - return 0; -} - -/* ----------------------------------------------------------------------- */ - -static const struct v4l2_ctrl_ops wm8775_ctrl_ops = { - .s_ctrl = wm8775_s_ctrl, -}; - -static const struct v4l2_subdev_core_ops wm8775_core_ops = { - .log_status = wm8775_log_status, - .g_chip_ident = wm8775_g_chip_ident, - .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, - .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, - .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, - .g_ctrl = v4l2_subdev_g_ctrl, - .s_ctrl = v4l2_subdev_s_ctrl, - .queryctrl = v4l2_subdev_queryctrl, - .querymenu = v4l2_subdev_querymenu, -}; - -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; - int err; - bool is_nova_s = false; - - if (client->dev.platform_data) { - struct wm8775_platform_data *data = client->dev.platform_data; - is_nova_s = data->is_nova_s; - } - - /* 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 = kzalloc(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; - - v4l2_ctrl_handler_init(&state->hdl, 4); - state->mute = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, - V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); - state->vol = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, - V4L2_CID_AUDIO_VOLUME, 0, 65535, (65535+99)/100, 0xCF00); /* 0dB*/ - state->bal = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, - V4L2_CID_AUDIO_BALANCE, 0, 65535, (65535+99)/100, 32768); - state->loud = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, - V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 1); - sd->ctrl_handler = &state->hdl; - err = state->hdl.error; - if (err) { - v4l2_ctrl_handler_free(&state->hdl); - kfree(state); - return err; - } - - /* Initialize wm8775 */ - - /* RESET */ - wm8775_write(sd, R23, 0x000); - /* Disable zero cross detect timeout */ - wm8775_write(sd, R7, 0x000); - /* HPF enable, left justified, 24-bit (Philips) mode */ - wm8775_write(sd, R11, 0x021); - /* Master mode, clock ratio 256fs */ - wm8775_write(sd, R12, 0x102); - /* Powered up */ - wm8775_write(sd, R13, 0x000); - - if (!is_nova_s) { - /* 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); - } else { - /* ALC stereo, ALC target level -5dB FS, ALC max gain +8dB */ - wm8775_write(sd, R16, 0x1bb); - /* Set ALC mode and hold time */ - wm8775_write(sd, R17, (state->loud->val ? ALC_EN : 0) | ALC_HOLD); - } - /* 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); - if (!is_nova_s) { - /* Transient window 4ms, lower PGA gain limit -1dB */ - wm8775_write(sd, R20, 0x07a); - /* LRBOTH = 1, use input 2. */ - wm8775_write(sd, R21, 0x102); - } else { - /* Transient window 4ms, ALC min gain -5dB */ - wm8775_write(sd, R20, 0x0fb); - - wm8775_set_audio(sd, 1); /* set volume/mute/mux */ - } - return 0; -} - -static int wm8775_remove(struct i2c_client *client) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - struct wm8775_state *state = to_state(sd); - - v4l2_device_unregister_subdev(sd); - v4l2_ctrl_handler_free(&state->hdl); - kfree(state); - return 0; -} - -static const struct i2c_device_id wm8775_id[] = { - { "wm8775", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, wm8775_id); - -static struct i2c_driver wm8775_driver = { - .driver = { - .owner = THIS_MODULE, - .name = "wm8775", - }, - .probe = wm8775_probe, - .remove = wm8775_remove, - .id_table = wm8775_id, -}; - -module_i2c_driver(wm8775_driver); |