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Hans Verkuil6fb377f2007-12-18 19:40:44 -03001/*
2 * cs5345 Cirrus Logic 24-bit, 192 kHz Stereo Audio ADC
3 * Copyright (C) 2007 Hans Verkuil
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20
Hans Verkuil6fb377f2007-12-18 19:40:44 -030021#include <linux/module.h>
22#include <linux/kernel.h>
23#include <linux/i2c.h>
24#include <linux/videodev2.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090025#include <linux/slab.h>
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030026#include <media/v4l2-device.h>
Hans Verkuil34a078d2010-12-12 07:53:28 -030027#include <media/v4l2-ctrls.h>
Hans Verkuil6fb377f2007-12-18 19:40:44 -030028
29MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC");
30MODULE_AUTHOR("Hans Verkuil");
31MODULE_LICENSE("GPL");
32
Rusty Russell90ab5ee2012-01-13 09:32:20 +103033static bool debug;
Hans Verkuil6fb377f2007-12-18 19:40:44 -030034
35module_param(debug, bool, 0644);
36
Niels de Vos61a2d072008-07-31 00:07:23 -070037MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");
Hans Verkuil6fb377f2007-12-18 19:40:44 -030038
Hans Verkuil34a078d2010-12-12 07:53:28 -030039struct cs5345_state {
40 struct v4l2_subdev sd;
41 struct v4l2_ctrl_handler hdl;
42};
43
44static inline struct cs5345_state *to_state(struct v4l2_subdev *sd)
45{
46 return container_of(sd, struct cs5345_state, sd);
47}
48
49static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
50{
51 return &container_of(ctrl->handler, struct cs5345_state, hdl)->sd;
52}
Hans Verkuil6fb377f2007-12-18 19:40:44 -030053
54/* ----------------------------------------------------------------------- */
55
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030056static inline int cs5345_write(struct v4l2_subdev *sd, u8 reg, u8 value)
Hans Verkuil6fb377f2007-12-18 19:40:44 -030057{
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030058 struct i2c_client *client = v4l2_get_subdevdata(sd);
59
Hans Verkuil6fb377f2007-12-18 19:40:44 -030060 return i2c_smbus_write_byte_data(client, reg, value);
61}
62
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030063static inline int cs5345_read(struct v4l2_subdev *sd, u8 reg)
Hans Verkuil6fb377f2007-12-18 19:40:44 -030064{
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030065 struct i2c_client *client = v4l2_get_subdevdata(sd);
66
Hans Verkuil6fb377f2007-12-18 19:40:44 -030067 return i2c_smbus_read_byte_data(client, reg);
68}
69
Hans Verkuil5325b422009-04-02 11:26:22 -030070static int cs5345_s_routing(struct v4l2_subdev *sd,
71 u32 input, u32 output, u32 config)
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030072{
Hans Verkuil5325b422009-04-02 11:26:22 -030073 if ((input & 0xf) > 6) {
74 v4l2_err(sd, "Invalid input %d.\n", input);
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030075 return -EINVAL;
76 }
Hans Verkuil5325b422009-04-02 11:26:22 -030077 cs5345_write(sd, 0x09, input & 0xf);
78 cs5345_write(sd, 0x05, input & 0xf0);
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030079 return 0;
80}
81
Hans Verkuil34a078d2010-12-12 07:53:28 -030082static int cs5345_s_ctrl(struct v4l2_ctrl *ctrl)
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030083{
Hans Verkuil34a078d2010-12-12 07:53:28 -030084 struct v4l2_subdev *sd = to_sd(ctrl);
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030085
Hans Verkuil34a078d2010-12-12 07:53:28 -030086 switch (ctrl->id) {
87 case V4L2_CID_AUDIO_MUTE:
88 cs5345_write(sd, 0x04, ctrl->val ? 0x80 : 0);
89 return 0;
90 case V4L2_CID_AUDIO_VOLUME:
91 cs5345_write(sd, 0x07, ((u8)ctrl->val) & 0x3f);
92 cs5345_write(sd, 0x08, ((u8)ctrl->val) & 0x3f);
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030093 return 0;
94 }
Hans Verkuil34a078d2010-12-12 07:53:28 -030095 return -EINVAL;
Hans Verkuilb3ee7e22008-12-19 10:34:22 -030096}
97
98#ifdef CONFIG_VIDEO_ADV_DEBUG
Hans Verkuilaecde8b52008-12-30 07:14:19 -030099static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300100{
Hans Verkuilaecde8b52008-12-30 07:14:19 -0300101 reg->size = 1;
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300102 reg->val = cs5345_read(sd, reg->reg & 0x1f);
103 return 0;
104}
105
Hans Verkuil977ba3b2013-03-24 08:28:46 -0300106static int cs5345_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300107{
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300108 cs5345_write(sd, reg->reg & 0x1f, reg->val & 0xff);
109 return 0;
110}
111#endif
112
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300113static int cs5345_log_status(struct v4l2_subdev *sd)
114{
115 u8 v = cs5345_read(sd, 0x09) & 7;
116 u8 m = cs5345_read(sd, 0x04);
117 int vol = cs5345_read(sd, 0x08) & 0x3f;
118
119 v4l2_info(sd, "Input: %d%s\n", v,
120 (m & 0x80) ? " (muted)" : "");
121 if (vol >= 32)
122 vol = vol - 64;
123 v4l2_info(sd, "Volume: %d dB\n", vol);
124 return 0;
125}
126
Hans Verkuil6fb377f2007-12-18 19:40:44 -0300127/* ----------------------------------------------------------------------- */
128
Hans Verkuil34a078d2010-12-12 07:53:28 -0300129static const struct v4l2_ctrl_ops cs5345_ctrl_ops = {
130 .s_ctrl = cs5345_s_ctrl,
131};
132
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300133static const struct v4l2_subdev_core_ops cs5345_core_ops = {
134 .log_status = cs5345_log_status,
Hans Verkuil34a078d2010-12-12 07:53:28 -0300135 .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
136 .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
137 .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
138 .g_ctrl = v4l2_subdev_g_ctrl,
139 .s_ctrl = v4l2_subdev_s_ctrl,
140 .queryctrl = v4l2_subdev_queryctrl,
141 .querymenu = v4l2_subdev_querymenu,
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300142#ifdef CONFIG_VIDEO_ADV_DEBUG
143 .g_register = cs5345_g_register,
144 .s_register = cs5345_s_register,
145#endif
146};
147
148static const struct v4l2_subdev_audio_ops cs5345_audio_ops = {
149 .s_routing = cs5345_s_routing,
150};
151
152static const struct v4l2_subdev_ops cs5345_ops = {
153 .core = &cs5345_core_ops,
154 .audio = &cs5345_audio_ops,
155};
156
157/* ----------------------------------------------------------------------- */
158
Jean Delvared2653e92008-04-29 23:11:39 +0200159static int cs5345_probe(struct i2c_client *client,
160 const struct i2c_device_id *id)
Hans Verkuil6fb377f2007-12-18 19:40:44 -0300161{
Hans Verkuil34a078d2010-12-12 07:53:28 -0300162 struct cs5345_state *state;
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300163 struct v4l2_subdev *sd;
164
Hans Verkuil6fb377f2007-12-18 19:40:44 -0300165 /* Check if the adapter supports the needed features */
166 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
167 return -EIO;
168
169 v4l_info(client, "chip found @ 0x%x (%s)\n",
170 client->addr << 1, client->adapter->name);
171
Laurent Pinchartc02b2112013-05-02 08:29:43 -0300172 state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
Hans Verkuil34a078d2010-12-12 07:53:28 -0300173 if (state == NULL)
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300174 return -ENOMEM;
Hans Verkuil34a078d2010-12-12 07:53:28 -0300175 sd = &state->sd;
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300176 v4l2_i2c_subdev_init(sd, client, &cs5345_ops);
177
Hans Verkuil34a078d2010-12-12 07:53:28 -0300178 v4l2_ctrl_handler_init(&state->hdl, 2);
179 v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops,
180 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
181 v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops,
182 V4L2_CID_AUDIO_VOLUME, -24, 24, 1, 0);
183 sd->ctrl_handler = &state->hdl;
184 if (state->hdl.error) {
185 int err = state->hdl.error;
186
187 v4l2_ctrl_handler_free(&state->hdl);
Hans Verkuil34a078d2010-12-12 07:53:28 -0300188 return err;
189 }
190 /* set volume/mute */
191 v4l2_ctrl_handler_setup(&state->hdl);
192
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300193 cs5345_write(sd, 0x02, 0x00);
194 cs5345_write(sd, 0x04, 0x01);
195 cs5345_write(sd, 0x09, 0x01);
196 return 0;
197}
198
199/* ----------------------------------------------------------------------- */
200
201static int cs5345_remove(struct i2c_client *client)
202{
203 struct v4l2_subdev *sd = i2c_get_clientdata(client);
Hans Verkuil34a078d2010-12-12 07:53:28 -0300204 struct cs5345_state *state = to_state(sd);
Hans Verkuilb3ee7e22008-12-19 10:34:22 -0300205
206 v4l2_device_unregister_subdev(sd);
Hans Verkuil34a078d2010-12-12 07:53:28 -0300207 v4l2_ctrl_handler_free(&state->hdl);
Hans Verkuil6fb377f2007-12-18 19:40:44 -0300208 return 0;
209}
210
211/* ----------------------------------------------------------------------- */
212
Jean Delvareaf294862008-05-18 20:49:40 +0200213static const struct i2c_device_id cs5345_id[] = {
214 { "cs5345", 0 },
215 { }
216};
217MODULE_DEVICE_TABLE(i2c, cs5345_id);
218
Hans Verkuil51e86842010-09-15 15:00:07 -0300219static struct i2c_driver cs5345_driver = {
220 .driver = {
221 .owner = THIS_MODULE,
222 .name = "cs5345",
223 },
224 .probe = cs5345_probe,
225 .remove = cs5345_remove,
226 .id_table = cs5345_id,
Hans Verkuil6fb377f2007-12-18 19:40:44 -0300227};
Hans Verkuil51e86842010-09-15 15:00:07 -0300228
Axel Linc6e8d862012-02-12 06:56:32 -0300229module_i2c_driver(cs5345_driver);