Commit | Line | Data |
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f4067fd4 HV |
1 | /* |
2 | * cs53l32a (Adaptec AVC-2010 and AVC-2410) i2c ivtv driver. | |
3 | * Copyright (C) 2005 Martin Vaughan | |
4 | * | |
5 | * Audio source switching for Adaptec AVC-2410 added by Trev Jackson | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/types.h> | |
5a0e3ad6 | 25 | #include <linux/slab.h> |
f4067fd4 HV |
26 | #include <linux/ioctl.h> |
27 | #include <asm/uaccess.h> | |
28 | #include <linux/i2c.h> | |
33b687cf | 29 | #include <linux/videodev2.h> |
825c6aa2 | 30 | #include <media/v4l2-device.h> |
74cab31c | 31 | #include <media/v4l2-chip-ident.h> |
251190cf | 32 | #include <media/v4l2-ctrls.h> |
f4067fd4 HV |
33 | |
34 | MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC"); | |
35 | MODULE_AUTHOR("Martin Vaughan"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | ||
90ab5ee9 | 38 | static bool debug; |
f4067fd4 HV |
39 | |
40 | module_param(debug, bool, 0644); | |
41 | ||
61a2d07d | 42 | MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); |
f4067fd4 | 43 | |
f4067fd4 | 44 | |
251190cf HV |
45 | struct cs53l32a_state { |
46 | struct v4l2_subdev sd; | |
47 | struct v4l2_ctrl_handler hdl; | |
48 | }; | |
49 | ||
50 | static inline struct cs53l32a_state *to_state(struct v4l2_subdev *sd) | |
51 | { | |
52 | return container_of(sd, struct cs53l32a_state, sd); | |
53 | } | |
54 | ||
55 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) | |
56 | { | |
57 | return &container_of(ctrl->handler, struct cs53l32a_state, hdl)->sd; | |
58 | } | |
59 | ||
f4067fd4 HV |
60 | /* ----------------------------------------------------------------------- */ |
61 | ||
825c6aa2 | 62 | static int cs53l32a_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
f4067fd4 | 63 | { |
825c6aa2 HV |
64 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
65 | ||
f4067fd4 HV |
66 | return i2c_smbus_write_byte_data(client, reg, value); |
67 | } | |
68 | ||
825c6aa2 | 69 | static int cs53l32a_read(struct v4l2_subdev *sd, u8 reg) |
f4067fd4 | 70 | { |
825c6aa2 HV |
71 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
72 | ||
f4067fd4 HV |
73 | return i2c_smbus_read_byte_data(client, reg); |
74 | } | |
75 | ||
5325b427 HV |
76 | static int cs53l32a_s_routing(struct v4l2_subdev *sd, |
77 | u32 input, u32 output, u32 config) | |
f4067fd4 | 78 | { |
825c6aa2 HV |
79 | /* There are 2 physical inputs, but the second input can be |
80 | placed in two modes, the first mode bypasses the PGA (gain), | |
81 | the second goes through the PGA. Hence there are three | |
82 | possible inputs to choose from. */ | |
5325b427 HV |
83 | if (input > 2) { |
84 | v4l2_err(sd, "Invalid input %d.\n", input); | |
f4067fd4 HV |
85 | return -EINVAL; |
86 | } | |
5325b427 | 87 | cs53l32a_write(sd, 0x01, 0x01 + (input << 4)); |
825c6aa2 HV |
88 | return 0; |
89 | } | |
90 | ||
251190cf | 91 | static int cs53l32a_s_ctrl(struct v4l2_ctrl *ctrl) |
825c6aa2 | 92 | { |
251190cf | 93 | struct v4l2_subdev *sd = to_sd(ctrl); |
825c6aa2 | 94 | |
251190cf HV |
95 | switch (ctrl->id) { |
96 | case V4L2_CID_AUDIO_MUTE: | |
97 | cs53l32a_write(sd, 0x03, ctrl->val ? 0xf0 : 0x30); | |
98 | return 0; | |
99 | case V4L2_CID_AUDIO_VOLUME: | |
100 | cs53l32a_write(sd, 0x04, (u8)ctrl->val); | |
101 | cs53l32a_write(sd, 0x05, (u8)ctrl->val); | |
825c6aa2 HV |
102 | return 0; |
103 | } | |
251190cf | 104 | return -EINVAL; |
f4067fd4 HV |
105 | } |
106 | ||
aecde8b5 | 107 | static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) |
825c6aa2 HV |
108 | { |
109 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
110 | ||
111 | return v4l2_chip_ident_i2c_client(client, | |
112 | chip, V4L2_IDENT_CS53l32A, 0); | |
113 | } | |
114 | ||
115 | static int cs53l32a_log_status(struct v4l2_subdev *sd) | |
116 | { | |
251190cf | 117 | struct cs53l32a_state *state = to_state(sd); |
825c6aa2 | 118 | u8 v = cs53l32a_read(sd, 0x01); |
825c6aa2 | 119 | |
251190cf HV |
120 | v4l2_info(sd, "Input: %d\n", (v >> 4) & 3); |
121 | v4l2_ctrl_handler_log_status(&state->hdl, sd->name); | |
825c6aa2 HV |
122 | return 0; |
123 | } | |
124 | ||
825c6aa2 HV |
125 | /* ----------------------------------------------------------------------- */ |
126 | ||
251190cf HV |
127 | static const struct v4l2_ctrl_ops cs53l32a_ctrl_ops = { |
128 | .s_ctrl = cs53l32a_s_ctrl, | |
129 | }; | |
130 | ||
825c6aa2 HV |
131 | static const struct v4l2_subdev_core_ops cs53l32a_core_ops = { |
132 | .log_status = cs53l32a_log_status, | |
133 | .g_chip_ident = cs53l32a_g_chip_ident, | |
251190cf HV |
134 | .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, |
135 | .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, | |
136 | .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, | |
137 | .g_ctrl = v4l2_subdev_g_ctrl, | |
138 | .s_ctrl = v4l2_subdev_s_ctrl, | |
139 | .queryctrl = v4l2_subdev_queryctrl, | |
140 | .querymenu = v4l2_subdev_querymenu, | |
825c6aa2 HV |
141 | }; |
142 | ||
143 | static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = { | |
144 | .s_routing = cs53l32a_s_routing, | |
145 | }; | |
146 | ||
147 | static const struct v4l2_subdev_ops cs53l32a_ops = { | |
148 | .core = &cs53l32a_core_ops, | |
149 | .audio = &cs53l32a_audio_ops, | |
150 | }; | |
151 | ||
f4067fd4 HV |
152 | /* ----------------------------------------------------------------------- */ |
153 | ||
154 | /* i2c implementation */ | |
155 | ||
156 | /* | |
157 | * Generic i2c probe | |
158 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
159 | */ | |
160 | ||
d2653e92 JD |
161 | static int cs53l32a_probe(struct i2c_client *client, |
162 | const struct i2c_device_id *id) | |
f4067fd4 | 163 | { |
251190cf | 164 | struct cs53l32a_state *state; |
825c6aa2 | 165 | struct v4l2_subdev *sd; |
f4067fd4 HV |
166 | int i; |
167 | ||
168 | /* Check if the adapter supports the needed features */ | |
e8e6b991 | 169 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 170 | return -EIO; |
f4067fd4 | 171 | |
af294867 JD |
172 | if (!id) |
173 | strlcpy(client->name, "cs53l32a", sizeof(client->name)); | |
f4067fd4 | 174 | |
4c05de9c HV |
175 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
176 | client->addr << 1, client->adapter->name); | |
f4067fd4 | 177 | |
251190cf HV |
178 | state = kzalloc(sizeof(struct cs53l32a_state), GFP_KERNEL); |
179 | if (state == NULL) | |
825c6aa2 | 180 | return -ENOMEM; |
251190cf | 181 | sd = &state->sd; |
825c6aa2 HV |
182 | v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops); |
183 | ||
f4067fd4 | 184 | for (i = 1; i <= 7; i++) { |
825c6aa2 | 185 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 186 | |
825c6aa2 | 187 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 HV |
188 | } |
189 | ||
251190cf HV |
190 | v4l2_ctrl_handler_init(&state->hdl, 2); |
191 | v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops, | |
192 | V4L2_CID_AUDIO_VOLUME, -96, 12, 1, 0); | |
193 | v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops, | |
194 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); | |
195 | sd->ctrl_handler = &state->hdl; | |
196 | if (state->hdl.error) { | |
197 | int err = state->hdl.error; | |
198 | ||
199 | v4l2_ctrl_handler_free(&state->hdl); | |
200 | kfree(state); | |
201 | return err; | |
202 | } | |
203 | ||
f4067fd4 HV |
204 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ |
205 | ||
251190cf HV |
206 | cs53l32a_write(sd, 0x01, 0x21); |
207 | cs53l32a_write(sd, 0x02, 0x29); | |
208 | cs53l32a_write(sd, 0x03, 0x30); | |
209 | cs53l32a_write(sd, 0x04, 0x00); | |
210 | cs53l32a_write(sd, 0x05, 0x00); | |
211 | cs53l32a_write(sd, 0x06, 0x00); | |
212 | cs53l32a_write(sd, 0x07, 0x00); | |
f4067fd4 HV |
213 | |
214 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ | |
215 | ||
216 | for (i = 1; i <= 7; i++) { | |
825c6aa2 | 217 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 218 | |
825c6aa2 | 219 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 | 220 | } |
f4067fd4 HV |
221 | return 0; |
222 | } | |
223 | ||
825c6aa2 HV |
224 | static int cs53l32a_remove(struct i2c_client *client) |
225 | { | |
226 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
251190cf | 227 | struct cs53l32a_state *state = to_state(sd); |
825c6aa2 HV |
228 | |
229 | v4l2_device_unregister_subdev(sd); | |
251190cf HV |
230 | v4l2_ctrl_handler_free(&state->hdl); |
231 | kfree(state); | |
825c6aa2 HV |
232 | return 0; |
233 | } | |
234 | ||
af294867 JD |
235 | static const struct i2c_device_id cs53l32a_id[] = { |
236 | { "cs53l32a", 0 }, | |
237 | { } | |
238 | }; | |
239 | MODULE_DEVICE_TABLE(i2c, cs53l32a_id); | |
240 | ||
50337ace HV |
241 | static struct i2c_driver cs53l32a_driver = { |
242 | .driver = { | |
243 | .owner = THIS_MODULE, | |
244 | .name = "cs53l32a", | |
245 | }, | |
246 | .probe = cs53l32a_probe, | |
247 | .remove = cs53l32a_remove, | |
248 | .id_table = cs53l32a_id, | |
f4067fd4 | 249 | }; |
50337ace | 250 | |
c6e8d86f | 251 | module_i2c_driver(cs53l32a_driver); |