Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 1 | /* |
| 2 | * wm8775 - driver version 0.0.1 |
| 3 | * |
| 4 | * Copyright (C) 2004 Ulf Eklund <ivtv at eklund.to> |
| 5 | * |
| 6 | * Based on saa7115 driver |
| 7 | * |
Hans Verkuil | 1f4b336 | 2005-11-13 16:08:05 -0800 | [diff] [blame] | 8 | * Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl> |
| 9 | * - Cleanup |
| 10 | * - V4L2 API update |
| 11 | * - sound fixes |
| 12 | * |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 26 | */ |
| 27 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 28 | #include <linux/module.h> |
| 29 | #include <linux/types.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 30 | #include <linux/slab.h> |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 31 | #include <linux/ioctl.h> |
| 32 | #include <asm/uaccess.h> |
| 33 | #include <linux/i2c.h> |
Hans Verkuil | 33b687c | 2008-07-25 05:32:50 -0300 | [diff] [blame] | 34 | #include <linux/videodev2.h> |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 35 | #include <media/v4l2-device.h> |
Hans Verkuil | 74cab31 | 2007-04-27 12:31:26 -0300 | [diff] [blame] | 36 | #include <media/v4l2-chip-ident.h> |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 37 | #include <media/v4l2-ctrls.h> |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 38 | #include <media/wm8775.h> |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 39 | |
| 40 | MODULE_DESCRIPTION("wm8775 driver"); |
Hans Verkuil | 1f4b336 | 2005-11-13 16:08:05 -0800 | [diff] [blame] | 41 | MODULE_AUTHOR("Ulf Eklund, Hans Verkuil"); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 42 | MODULE_LICENSE("GPL"); |
| 43 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 44 | |
Hans Verkuil | d9a53aa | 2007-09-13 11:08:25 -0300 | [diff] [blame] | 45 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 46 | /* ----------------------------------------------------------------------- */ |
| 47 | |
| 48 | enum { |
| 49 | R7 = 7, R11 = 11, |
| 50 | R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R23 = 23, |
| 51 | TOT_REGS |
| 52 | }; |
| 53 | |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 54 | #define ALC_HOLD 0x85 /* R17: use zero cross detection, ALC hold time 42.6 ms */ |
| 55 | #define ALC_EN 0x100 /* R17: ALC enable */ |
| 56 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 57 | struct wm8775_state { |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 58 | struct v4l2_subdev sd; |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 59 | struct v4l2_ctrl_handler hdl; |
| 60 | struct v4l2_ctrl *mute; |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 61 | struct v4l2_ctrl *vol; |
| 62 | struct v4l2_ctrl *bal; |
| 63 | struct v4l2_ctrl *loud; |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 64 | u8 input; /* Last selected input (0-0xf) */ |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 65 | }; |
| 66 | |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 67 | static inline struct wm8775_state *to_state(struct v4l2_subdev *sd) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 68 | { |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 69 | return container_of(sd, struct wm8775_state, sd); |
| 70 | } |
| 71 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 72 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) |
| 73 | { |
| 74 | return &container_of(ctrl->handler, struct wm8775_state, hdl)->sd; |
| 75 | } |
| 76 | |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 77 | static int wm8775_write(struct v4l2_subdev *sd, int reg, u16 val) |
| 78 | { |
| 79 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 80 | int i; |
| 81 | |
| 82 | if (reg < 0 || reg >= TOT_REGS) { |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 83 | v4l2_err(sd, "Invalid register R%d\n", reg); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 84 | return -1; |
| 85 | } |
| 86 | |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 87 | for (i = 0; i < 3; i++) |
| 88 | if (i2c_smbus_write_byte_data(client, |
| 89 | (reg << 1) | (val >> 8), val & 0xff) == 0) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 90 | return 0; |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 91 | v4l2_err(sd, "I2C: cannot write %03x to register R%d\n", val, reg); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 92 | return -1; |
| 93 | } |
| 94 | |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 95 | static void wm8775_set_audio(struct v4l2_subdev *sd, int quietly) |
| 96 | { |
| 97 | struct wm8775_state *state = to_state(sd); |
| 98 | u8 vol_l, vol_r; |
| 99 | int muted = 0 != state->mute->val; |
| 100 | u16 volume = (u16)state->vol->val; |
| 101 | u16 balance = (u16)state->bal->val; |
| 102 | |
| 103 | /* normalize ( 65535 to 0 -> 255 to 0 (+24dB to -103dB) ) */ |
| 104 | vol_l = (min(65536 - balance, 32768) * volume) >> 23; |
| 105 | vol_r = (min(balance, (u16)32768) * volume) >> 23; |
| 106 | |
| 107 | /* Mute */ |
| 108 | if (muted || quietly) |
| 109 | wm8775_write(sd, R21, 0x0c0 | state->input); |
| 110 | |
| 111 | wm8775_write(sd, R14, vol_l | 0x100); /* 0x100= Left channel ADC zero cross enable */ |
| 112 | wm8775_write(sd, R15, vol_r | 0x100); /* 0x100= Right channel ADC zero cross enable */ |
| 113 | |
| 114 | /* Un-mute */ |
| 115 | if (!muted) |
| 116 | wm8775_write(sd, R21, state->input); |
| 117 | } |
| 118 | |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 119 | static int wm8775_s_routing(struct v4l2_subdev *sd, |
| 120 | u32 input, u32 output, u32 config) |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 121 | { |
| 122 | struct wm8775_state *state = to_state(sd); |
| 123 | |
| 124 | /* There are 4 inputs and one output. Zero or more inputs |
| 125 | are multiplexed together to the output. Hence there are |
| 126 | 16 combinations. |
| 127 | If only one input is active (the normal case) then the |
| 128 | input values 1, 2, 4 or 8 should be used. */ |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 129 | if (input > 15) { |
| 130 | v4l2_err(sd, "Invalid input %d.\n", input); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 131 | return -EINVAL; |
| 132 | } |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 133 | state->input = input; |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 134 | if (!v4l2_ctrl_g_ctrl(state->mute)) |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 135 | return 0; |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 136 | if (!v4l2_ctrl_g_ctrl(state->vol)) |
| 137 | return 0; |
| 138 | if (!v4l2_ctrl_g_ctrl(state->bal)) |
| 139 | return 0; |
| 140 | wm8775_set_audio(sd, 1); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 141 | return 0; |
| 142 | } |
| 143 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 144 | static int wm8775_s_ctrl(struct v4l2_ctrl *ctrl) |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 145 | { |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 146 | struct v4l2_subdev *sd = to_sd(ctrl); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 147 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 148 | switch (ctrl->id) { |
| 149 | case V4L2_CID_AUDIO_MUTE: |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 150 | case V4L2_CID_AUDIO_VOLUME: |
| 151 | case V4L2_CID_AUDIO_BALANCE: |
| 152 | wm8775_set_audio(sd, 0); |
| 153 | return 0; |
| 154 | case V4L2_CID_AUDIO_LOUDNESS: |
| 155 | wm8775_write(sd, R17, (ctrl->val ? ALC_EN : 0) | ALC_HOLD); |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 156 | return 0; |
| 157 | } |
| 158 | return -EINVAL; |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 159 | } |
| 160 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 161 | static int wm8775_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 162 | { |
| 163 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 164 | |
| 165 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_WM8775, 0); |
| 166 | } |
| 167 | |
| 168 | static int wm8775_log_status(struct v4l2_subdev *sd) |
| 169 | { |
| 170 | struct wm8775_state *state = to_state(sd); |
| 171 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 172 | v4l2_info(sd, "Input: %d\n", state->input); |
| 173 | v4l2_ctrl_handler_log_status(&state->hdl, sd->name); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | static int wm8775_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq) |
| 178 | { |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 179 | wm8775_set_audio(sd, 0); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 180 | return 0; |
| 181 | } |
| 182 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 183 | /* ----------------------------------------------------------------------- */ |
| 184 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 185 | static const struct v4l2_ctrl_ops wm8775_ctrl_ops = { |
| 186 | .s_ctrl = wm8775_s_ctrl, |
| 187 | }; |
| 188 | |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 189 | static const struct v4l2_subdev_core_ops wm8775_core_ops = { |
| 190 | .log_status = wm8775_log_status, |
| 191 | .g_chip_ident = wm8775_g_chip_ident, |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 192 | .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, |
| 193 | .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, |
| 194 | .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, |
| 195 | .g_ctrl = v4l2_subdev_g_ctrl, |
| 196 | .s_ctrl = v4l2_subdev_s_ctrl, |
| 197 | .queryctrl = v4l2_subdev_queryctrl, |
| 198 | .querymenu = v4l2_subdev_querymenu, |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 199 | }; |
| 200 | |
| 201 | static const struct v4l2_subdev_tuner_ops wm8775_tuner_ops = { |
| 202 | .s_frequency = wm8775_s_frequency, |
| 203 | }; |
| 204 | |
| 205 | static const struct v4l2_subdev_audio_ops wm8775_audio_ops = { |
| 206 | .s_routing = wm8775_s_routing, |
| 207 | }; |
| 208 | |
| 209 | static const struct v4l2_subdev_ops wm8775_ops = { |
| 210 | .core = &wm8775_core_ops, |
| 211 | .tuner = &wm8775_tuner_ops, |
| 212 | .audio = &wm8775_audio_ops, |
| 213 | }; |
| 214 | |
| 215 | /* ----------------------------------------------------------------------- */ |
| 216 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 217 | /* i2c implementation */ |
| 218 | |
| 219 | /* |
| 220 | * Generic i2c probe |
| 221 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| 222 | */ |
| 223 | |
Jean Delvare | d2653e9 | 2008-04-29 23:11:39 +0200 | [diff] [blame] | 224 | static int wm8775_probe(struct i2c_client *client, |
| 225 | const struct i2c_device_id *id) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 226 | { |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 227 | struct wm8775_state *state; |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 228 | struct v4l2_subdev *sd; |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 229 | int err; |
| 230 | bool is_nova_s = false; |
| 231 | |
| 232 | if (client->dev.platform_data) { |
| 233 | struct wm8775_platform_data *data = client->dev.platform_data; |
| 234 | is_nova_s = data->is_nova_s; |
| 235 | } |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 236 | |
| 237 | /* Check if the adapter supports the needed features */ |
Hans Verkuil | d9a53aa | 2007-09-13 11:08:25 -0300 | [diff] [blame] | 238 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 239 | return -EIO; |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 240 | |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 241 | v4l_info(client, "chip found @ 0x%02x (%s)\n", |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 242 | client->addr << 1, client->adapter->name); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 243 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 244 | state = kzalloc(sizeof(struct wm8775_state), GFP_KERNEL); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 245 | if (state == NULL) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 246 | return -ENOMEM; |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 247 | sd = &state->sd; |
| 248 | v4l2_i2c_subdev_init(sd, client, &wm8775_ops); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 249 | state->input = 2; |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 250 | |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 251 | v4l2_ctrl_handler_init(&state->hdl, 4); |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 252 | state->mute = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, |
| 253 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 254 | state->vol = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, |
| 255 | V4L2_CID_AUDIO_VOLUME, 0, 65535, (65535+99)/100, 0xCF00); /* 0dB*/ |
| 256 | state->bal = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, |
| 257 | V4L2_CID_AUDIO_BALANCE, 0, 65535, (65535+99)/100, 32768); |
| 258 | state->loud = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, |
| 259 | V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 1); |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 260 | sd->ctrl_handler = &state->hdl; |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 261 | err = state->hdl.error; |
| 262 | if (err) { |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 263 | v4l2_ctrl_handler_free(&state->hdl); |
| 264 | kfree(state); |
| 265 | return err; |
| 266 | } |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 267 | |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 268 | /* Initialize wm8775 */ |
| 269 | |
| 270 | /* RESET */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 271 | wm8775_write(sd, R23, 0x000); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 272 | /* Disable zero cross detect timeout */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 273 | wm8775_write(sd, R7, 0x000); |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 274 | /* HPF enable, left justified, 24-bit (Philips) mode */ |
Mauro Carvalho Chehab | 46e67ac | 2011-01-03 09:09:56 -0200 | [diff] [blame] | 275 | wm8775_write(sd, R11, 0x021); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 276 | /* Master mode, clock ratio 256fs */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 277 | wm8775_write(sd, R12, 0x102); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 278 | /* Powered up */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 279 | wm8775_write(sd, R13, 0x000); |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 280 | |
| 281 | if (!is_nova_s) { |
| 282 | /* ADC gain +2.5dB, enable zero cross */ |
| 283 | wm8775_write(sd, R14, 0x1d4); |
| 284 | /* ADC gain +2.5dB, enable zero cross */ |
| 285 | wm8775_write(sd, R15, 0x1d4); |
| 286 | /* ALC Stereo, ALC target level -1dB FS max gain +8dB */ |
| 287 | wm8775_write(sd, R16, 0x1bf); |
| 288 | /* Enable gain control, use zero cross detection, |
| 289 | ALC hold time 42.6 ms */ |
| 290 | wm8775_write(sd, R17, 0x185); |
| 291 | } else { |
| 292 | /* ALC stereo, ALC target level -5dB FS, ALC max gain +8dB */ |
| 293 | wm8775_write(sd, R16, 0x1bb); |
| 294 | /* Set ALC mode and hold time */ |
| 295 | wm8775_write(sd, R17, (state->loud->val ? ALC_EN : 0) | ALC_HOLD); |
| 296 | } |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 297 | /* ALC gain ramp up delay 34 s, ALC gain ramp down delay 33 ms */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 298 | wm8775_write(sd, R18, 0x0a2); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 299 | /* Enable noise gate, threshold -72dBfs */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 300 | wm8775_write(sd, R19, 0x005); |
Lawrence Rust | 6951803 | 2011-02-06 17:46:12 -0300 | [diff] [blame] | 301 | if (!is_nova_s) { |
| 302 | /* Transient window 4ms, lower PGA gain limit -1dB */ |
| 303 | wm8775_write(sd, R20, 0x07a); |
| 304 | /* LRBOTH = 1, use input 2. */ |
| 305 | wm8775_write(sd, R21, 0x102); |
| 306 | } else { |
| 307 | /* Transient window 4ms, ALC min gain -5dB */ |
| 308 | wm8775_write(sd, R20, 0x0fb); |
| 309 | |
| 310 | wm8775_set_audio(sd, 1); /* set volume/mute/mux */ |
| 311 | } |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 312 | return 0; |
| 313 | } |
| 314 | |
Hans Verkuil | d9a53aa | 2007-09-13 11:08:25 -0300 | [diff] [blame] | 315 | static int wm8775_remove(struct i2c_client *client) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 316 | { |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 317 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 318 | struct wm8775_state *state = to_state(sd); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 319 | |
| 320 | v4l2_device_unregister_subdev(sd); |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 321 | v4l2_ctrl_handler_free(&state->hdl); |
| 322 | kfree(state); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 323 | return 0; |
| 324 | } |
| 325 | |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 326 | static const struct i2c_device_id wm8775_id[] = { |
| 327 | { "wm8775", 0 }, |
| 328 | { } |
| 329 | }; |
| 330 | MODULE_DEVICE_TABLE(i2c, wm8775_id); |
| 331 | |
Hans Verkuil | a5b2c49 | 2010-09-15 15:27:48 -0300 | [diff] [blame] | 332 | static struct i2c_driver wm8775_driver = { |
| 333 | .driver = { |
| 334 | .owner = THIS_MODULE, |
| 335 | .name = "wm8775", |
| 336 | }, |
| 337 | .probe = wm8775_probe, |
| 338 | .remove = wm8775_remove, |
| 339 | .id_table = wm8775_id, |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 340 | }; |
Hans Verkuil | a5b2c49 | 2010-09-15 15:27:48 -0300 | [diff] [blame] | 341 | |
| 342 | static __init int init_wm8775(void) |
| 343 | { |
| 344 | return i2c_add_driver(&wm8775_driver); |
| 345 | } |
| 346 | |
| 347 | static __exit void exit_wm8775(void) |
| 348 | { |
| 349 | i2c_del_driver(&wm8775_driver); |
| 350 | } |
| 351 | |
| 352 | module_init(init_wm8775); |
| 353 | module_exit(exit_wm8775); |