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> |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 38 | |
| 39 | MODULE_DESCRIPTION("wm8775 driver"); |
Hans Verkuil | 1f4b336 | 2005-11-13 16:08:05 -0800 | [diff] [blame] | 40 | MODULE_AUTHOR("Ulf Eklund, Hans Verkuil"); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 41 | MODULE_LICENSE("GPL"); |
| 42 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 43 | |
Hans Verkuil | d9a53aa | 2007-09-13 11:08:25 -0300 | [diff] [blame] | 44 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 45 | /* ----------------------------------------------------------------------- */ |
| 46 | |
| 47 | enum { |
| 48 | R7 = 7, R11 = 11, |
| 49 | R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R23 = 23, |
| 50 | TOT_REGS |
| 51 | }; |
| 52 | |
| 53 | struct wm8775_state { |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 54 | struct v4l2_subdev sd; |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 55 | struct v4l2_ctrl_handler hdl; |
| 56 | struct v4l2_ctrl *mute; |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 57 | u8 input; /* Last selected input (0-0xf) */ |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 58 | }; |
| 59 | |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 60 | static inline struct wm8775_state *to_state(struct v4l2_subdev *sd) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 61 | { |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 62 | return container_of(sd, struct wm8775_state, sd); |
| 63 | } |
| 64 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 65 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) |
| 66 | { |
| 67 | return &container_of(ctrl->handler, struct wm8775_state, hdl)->sd; |
| 68 | } |
| 69 | |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 70 | static int wm8775_write(struct v4l2_subdev *sd, int reg, u16 val) |
| 71 | { |
| 72 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 73 | int i; |
| 74 | |
| 75 | if (reg < 0 || reg >= TOT_REGS) { |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 76 | v4l2_err(sd, "Invalid register R%d\n", reg); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 77 | return -1; |
| 78 | } |
| 79 | |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 80 | for (i = 0; i < 3; i++) |
| 81 | if (i2c_smbus_write_byte_data(client, |
| 82 | (reg << 1) | (val >> 8), val & 0xff) == 0) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 83 | return 0; |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 84 | 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] | 85 | return -1; |
| 86 | } |
| 87 | |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 88 | static int wm8775_s_routing(struct v4l2_subdev *sd, |
| 89 | u32 input, u32 output, u32 config) |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 90 | { |
| 91 | struct wm8775_state *state = to_state(sd); |
| 92 | |
| 93 | /* There are 4 inputs and one output. Zero or more inputs |
| 94 | are multiplexed together to the output. Hence there are |
| 95 | 16 combinations. |
| 96 | If only one input is active (the normal case) then the |
| 97 | input values 1, 2, 4 or 8 should be used. */ |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 98 | if (input > 15) { |
| 99 | v4l2_err(sd, "Invalid input %d.\n", input); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 100 | return -EINVAL; |
| 101 | } |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 102 | state->input = input; |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 103 | if (!v4l2_ctrl_g_ctrl(state->mute)) |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 104 | return 0; |
| 105 | wm8775_write(sd, R21, 0x0c0); |
| 106 | wm8775_write(sd, R14, 0x1d4); |
| 107 | wm8775_write(sd, R15, 0x1d4); |
| 108 | wm8775_write(sd, R21, 0x100 + state->input); |
| 109 | return 0; |
| 110 | } |
| 111 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 112 | static int wm8775_s_ctrl(struct v4l2_ctrl *ctrl) |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 113 | { |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 114 | struct v4l2_subdev *sd = to_sd(ctrl); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 115 | struct wm8775_state *state = to_state(sd); |
| 116 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 117 | switch (ctrl->id) { |
| 118 | case V4L2_CID_AUDIO_MUTE: |
| 119 | wm8775_write(sd, R21, 0x0c0); |
| 120 | wm8775_write(sd, R14, 0x1d4); |
| 121 | wm8775_write(sd, R15, 0x1d4); |
| 122 | if (!ctrl->val) |
| 123 | wm8775_write(sd, R21, 0x100 + state->input); |
| 124 | return 0; |
| 125 | } |
| 126 | return -EINVAL; |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 127 | } |
| 128 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 129 | 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] | 130 | { |
| 131 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 132 | |
| 133 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_WM8775, 0); |
| 134 | } |
| 135 | |
| 136 | static int wm8775_log_status(struct v4l2_subdev *sd) |
| 137 | { |
| 138 | struct wm8775_state *state = to_state(sd); |
| 139 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 140 | v4l2_info(sd, "Input: %d\n", state->input); |
| 141 | v4l2_ctrl_handler_log_status(&state->hdl, sd->name); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | static int wm8775_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq) |
| 146 | { |
| 147 | struct wm8775_state *state = to_state(sd); |
| 148 | |
| 149 | /* If I remove this, then it can happen that I have no |
| 150 | sound the first time I tune from static to a valid channel. |
| 151 | It's difficult to reproduce and is almost certainly related |
| 152 | to the zero cross detect circuit. */ |
| 153 | wm8775_write(sd, R21, 0x0c0); |
| 154 | wm8775_write(sd, R14, 0x1d4); |
| 155 | wm8775_write(sd, R15, 0x1d4); |
| 156 | wm8775_write(sd, R21, 0x100 + state->input); |
| 157 | return 0; |
| 158 | } |
| 159 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 160 | /* ----------------------------------------------------------------------- */ |
| 161 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 162 | static const struct v4l2_ctrl_ops wm8775_ctrl_ops = { |
| 163 | .s_ctrl = wm8775_s_ctrl, |
| 164 | }; |
| 165 | |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 166 | static const struct v4l2_subdev_core_ops wm8775_core_ops = { |
| 167 | .log_status = wm8775_log_status, |
| 168 | .g_chip_ident = wm8775_g_chip_ident, |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 169 | .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, |
| 170 | .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, |
| 171 | .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, |
| 172 | .g_ctrl = v4l2_subdev_g_ctrl, |
| 173 | .s_ctrl = v4l2_subdev_s_ctrl, |
| 174 | .queryctrl = v4l2_subdev_queryctrl, |
| 175 | .querymenu = v4l2_subdev_querymenu, |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 176 | }; |
| 177 | |
| 178 | static const struct v4l2_subdev_tuner_ops wm8775_tuner_ops = { |
| 179 | .s_frequency = wm8775_s_frequency, |
| 180 | }; |
| 181 | |
| 182 | static const struct v4l2_subdev_audio_ops wm8775_audio_ops = { |
| 183 | .s_routing = wm8775_s_routing, |
| 184 | }; |
| 185 | |
| 186 | static const struct v4l2_subdev_ops wm8775_ops = { |
| 187 | .core = &wm8775_core_ops, |
| 188 | .tuner = &wm8775_tuner_ops, |
| 189 | .audio = &wm8775_audio_ops, |
| 190 | }; |
| 191 | |
| 192 | /* ----------------------------------------------------------------------- */ |
| 193 | |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 194 | /* i2c implementation */ |
| 195 | |
| 196 | /* |
| 197 | * Generic i2c probe |
| 198 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| 199 | */ |
| 200 | |
Jean Delvare | d2653e9 | 2008-04-29 23:11:39 +0200 | [diff] [blame] | 201 | static int wm8775_probe(struct i2c_client *client, |
| 202 | const struct i2c_device_id *id) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 203 | { |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 204 | struct wm8775_state *state; |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 205 | struct v4l2_subdev *sd; |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 206 | |
| 207 | /* Check if the adapter supports the needed features */ |
Hans Verkuil | d9a53aa | 2007-09-13 11:08:25 -0300 | [diff] [blame] | 208 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 209 | return -EIO; |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 210 | |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 211 | v4l_info(client, "chip found @ 0x%02x (%s)\n", |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 212 | client->addr << 1, client->adapter->name); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 213 | |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 214 | state = kzalloc(sizeof(struct wm8775_state), GFP_KERNEL); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 215 | if (state == NULL) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 216 | return -ENOMEM; |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 217 | sd = &state->sd; |
| 218 | v4l2_i2c_subdev_init(sd, client, &wm8775_ops); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 219 | state->input = 2; |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 220 | |
| 221 | v4l2_ctrl_handler_init(&state->hdl, 1); |
| 222 | state->mute = v4l2_ctrl_new_std(&state->hdl, &wm8775_ctrl_ops, |
| 223 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); |
| 224 | sd->ctrl_handler = &state->hdl; |
| 225 | if (state->hdl.error) { |
| 226 | int err = state->hdl.error; |
| 227 | |
| 228 | v4l2_ctrl_handler_free(&state->hdl); |
| 229 | kfree(state); |
| 230 | return err; |
| 231 | } |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 232 | |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 233 | /* Initialize wm8775 */ |
| 234 | |
| 235 | /* RESET */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 236 | wm8775_write(sd, R23, 0x000); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 237 | /* Disable zero cross detect timeout */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 238 | wm8775_write(sd, R7, 0x000); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 239 | /* Left justified, 24-bit mode */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 240 | wm8775_write(sd, R11, 0x021); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 241 | /* Master mode, clock ratio 256fs */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 242 | wm8775_write(sd, R12, 0x102); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 243 | /* Powered up */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 244 | wm8775_write(sd, R13, 0x000); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 245 | /* ADC gain +2.5dB, enable zero cross */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 246 | wm8775_write(sd, R14, 0x1d4); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 247 | /* ADC gain +2.5dB, enable zero cross */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 248 | wm8775_write(sd, R15, 0x1d4); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 249 | /* ALC Stereo, ALC target level -1dB FS max gain +8dB */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 250 | wm8775_write(sd, R16, 0x1bf); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 251 | /* Enable gain control, use zero cross detection, |
| 252 | ALC hold time 42.6 ms */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 253 | wm8775_write(sd, R17, 0x185); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 254 | /* 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] | 255 | wm8775_write(sd, R18, 0x0a2); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 256 | /* Enable noise gate, threshold -72dBfs */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 257 | wm8775_write(sd, R19, 0x005); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 258 | /* Transient window 4ms, lower PGA gain limit -1dB */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 259 | wm8775_write(sd, R20, 0x07a); |
Hans Verkuil | 842441d | 2007-11-01 07:35:41 -0300 | [diff] [blame] | 260 | /* LRBOTH = 1, use input 2. */ |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 261 | wm8775_write(sd, R21, 0x102); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 262 | return 0; |
| 263 | } |
| 264 | |
Hans Verkuil | d9a53aa | 2007-09-13 11:08:25 -0300 | [diff] [blame] | 265 | static int wm8775_remove(struct i2c_client *client) |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 266 | { |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 267 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 268 | struct wm8775_state *state = to_state(sd); |
Hans Verkuil | ca085fb | 2008-11-29 13:03:22 -0300 | [diff] [blame] | 269 | |
| 270 | v4l2_device_unregister_subdev(sd); |
Hans Verkuil | 5aa9ae5 | 2010-04-24 08:23:53 -0300 | [diff] [blame] | 271 | v4l2_ctrl_handler_free(&state->hdl); |
| 272 | kfree(state); |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 273 | return 0; |
| 274 | } |
| 275 | |
Jean Delvare | af29486 | 2008-05-18 20:49:40 +0200 | [diff] [blame] | 276 | static const struct i2c_device_id wm8775_id[] = { |
| 277 | { "wm8775", 0 }, |
| 278 | { } |
| 279 | }; |
| 280 | MODULE_DEVICE_TABLE(i2c, wm8775_id); |
| 281 | |
Hans Verkuil | a5b2c49 | 2010-09-15 15:27:48 -0300 | [diff] [blame] | 282 | static struct i2c_driver wm8775_driver = { |
| 283 | .driver = { |
| 284 | .owner = THIS_MODULE, |
| 285 | .name = "wm8775", |
| 286 | }, |
| 287 | .probe = wm8775_probe, |
| 288 | .remove = wm8775_remove, |
| 289 | .id_table = wm8775_id, |
Hans Verkuil | 0edeea4 | 2005-11-08 21:37:25 -0800 | [diff] [blame] | 290 | }; |
Hans Verkuil | a5b2c49 | 2010-09-15 15:27:48 -0300 | [diff] [blame] | 291 | |
| 292 | static __init int init_wm8775(void) |
| 293 | { |
| 294 | return i2c_add_driver(&wm8775_driver); |
| 295 | } |
| 296 | |
| 297 | static __exit void exit_wm8775(void) |
| 298 | { |
| 299 | i2c_del_driver(&wm8775_driver); |
| 300 | } |
| 301 | |
| 302 | module_init(init_wm8775); |
| 303 | module_exit(exit_wm8775); |