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> | |
25 | #include <linux/ioctl.h> | |
26 | #include <asm/uaccess.h> | |
27 | #include <linux/i2c.h> | |
e2998e10 | 28 | #include <linux/i2c-id.h> |
33b687cf | 29 | #include <linux/videodev2.h> |
825c6aa2 | 30 | #include <media/v4l2-device.h> |
74cab31c | 31 | #include <media/v4l2-chip-ident.h> |
5fed935c | 32 | #include <media/v4l2-i2c-drv.h> |
f4067fd4 HV |
33 | |
34 | MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC"); | |
35 | MODULE_AUTHOR("Martin Vaughan"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | ||
4c05de9c | 38 | static int 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 HV |
44 | |
45 | /* ----------------------------------------------------------------------- */ | |
46 | ||
825c6aa2 | 47 | static int cs53l32a_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
f4067fd4 | 48 | { |
825c6aa2 HV |
49 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
50 | ||
f4067fd4 HV |
51 | return i2c_smbus_write_byte_data(client, reg, value); |
52 | } | |
53 | ||
825c6aa2 | 54 | static int cs53l32a_read(struct v4l2_subdev *sd, u8 reg) |
f4067fd4 | 55 | { |
825c6aa2 HV |
56 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
57 | ||
f4067fd4 HV |
58 | return i2c_smbus_read_byte_data(client, reg); |
59 | } | |
60 | ||
5325b427 HV |
61 | static int cs53l32a_s_routing(struct v4l2_subdev *sd, |
62 | u32 input, u32 output, u32 config) | |
f4067fd4 | 63 | { |
825c6aa2 HV |
64 | /* There are 2 physical inputs, but the second input can be |
65 | placed in two modes, the first mode bypasses the PGA (gain), | |
66 | the second goes through the PGA. Hence there are three | |
67 | possible inputs to choose from. */ | |
5325b427 HV |
68 | if (input > 2) { |
69 | v4l2_err(sd, "Invalid input %d.\n", input); | |
f4067fd4 HV |
70 | return -EINVAL; |
71 | } | |
5325b427 | 72 | cs53l32a_write(sd, 0x01, 0x01 + (input << 4)); |
825c6aa2 HV |
73 | return 0; |
74 | } | |
75 | ||
76 | static int cs53l32a_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | |
77 | { | |
78 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { | |
79 | ctrl->value = (cs53l32a_read(sd, 0x03) & 0xc0) != 0; | |
80 | return 0; | |
81 | } | |
82 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) | |
83 | return -EINVAL; | |
84 | ctrl->value = (s8)cs53l32a_read(sd, 0x04); | |
85 | return 0; | |
86 | } | |
87 | ||
88 | static int cs53l32a_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | |
89 | { | |
90 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { | |
91 | cs53l32a_write(sd, 0x03, ctrl->value ? 0xf0 : 0x30); | |
92 | return 0; | |
93 | } | |
94 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) | |
95 | return -EINVAL; | |
96 | if (ctrl->value > 12 || ctrl->value < -96) | |
97 | return -EINVAL; | |
98 | cs53l32a_write(sd, 0x04, (u8) ctrl->value); | |
99 | cs53l32a_write(sd, 0x05, (u8) ctrl->value); | |
f4067fd4 HV |
100 | return 0; |
101 | } | |
102 | ||
aecde8b5 | 103 | static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) |
825c6aa2 HV |
104 | { |
105 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
106 | ||
107 | return v4l2_chip_ident_i2c_client(client, | |
108 | chip, V4L2_IDENT_CS53l32A, 0); | |
109 | } | |
110 | ||
111 | static int cs53l32a_log_status(struct v4l2_subdev *sd) | |
112 | { | |
113 | u8 v = cs53l32a_read(sd, 0x01); | |
114 | u8 m = cs53l32a_read(sd, 0x03); | |
115 | s8 vol = cs53l32a_read(sd, 0x04); | |
116 | ||
117 | v4l2_info(sd, "Input: %d%s\n", (v >> 4) & 3, | |
118 | (m & 0xC0) ? " (muted)" : ""); | |
119 | v4l2_info(sd, "Volume: %d dB\n", vol); | |
120 | return 0; | |
121 | } | |
122 | ||
825c6aa2 HV |
123 | /* ----------------------------------------------------------------------- */ |
124 | ||
125 | static const struct v4l2_subdev_core_ops cs53l32a_core_ops = { | |
126 | .log_status = cs53l32a_log_status, | |
127 | .g_chip_ident = cs53l32a_g_chip_ident, | |
128 | .g_ctrl = cs53l32a_g_ctrl, | |
129 | .s_ctrl = cs53l32a_s_ctrl, | |
130 | }; | |
131 | ||
132 | static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = { | |
133 | .s_routing = cs53l32a_s_routing, | |
134 | }; | |
135 | ||
136 | static const struct v4l2_subdev_ops cs53l32a_ops = { | |
137 | .core = &cs53l32a_core_ops, | |
138 | .audio = &cs53l32a_audio_ops, | |
139 | }; | |
140 | ||
f4067fd4 HV |
141 | /* ----------------------------------------------------------------------- */ |
142 | ||
143 | /* i2c implementation */ | |
144 | ||
145 | /* | |
146 | * Generic i2c probe | |
147 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
148 | */ | |
149 | ||
d2653e92 JD |
150 | static int cs53l32a_probe(struct i2c_client *client, |
151 | const struct i2c_device_id *id) | |
f4067fd4 | 152 | { |
825c6aa2 | 153 | struct v4l2_subdev *sd; |
f4067fd4 HV |
154 | int i; |
155 | ||
156 | /* Check if the adapter supports the needed features */ | |
e8e6b991 | 157 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 158 | return -EIO; |
f4067fd4 | 159 | |
af294867 JD |
160 | if (!id) |
161 | strlcpy(client->name, "cs53l32a", sizeof(client->name)); | |
f4067fd4 | 162 | |
4c05de9c HV |
163 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
164 | client->addr << 1, client->adapter->name); | |
f4067fd4 | 165 | |
825c6aa2 HV |
166 | sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL); |
167 | if (sd == NULL) | |
168 | return -ENOMEM; | |
169 | v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops); | |
170 | ||
f4067fd4 | 171 | for (i = 1; i <= 7; i++) { |
825c6aa2 | 172 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 173 | |
825c6aa2 | 174 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 HV |
175 | } |
176 | ||
177 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ | |
178 | ||
825c6aa2 HV |
179 | cs53l32a_write(sd, 0x01, (u8) 0x21); |
180 | cs53l32a_write(sd, 0x02, (u8) 0x29); | |
181 | cs53l32a_write(sd, 0x03, (u8) 0x30); | |
182 | cs53l32a_write(sd, 0x04, (u8) 0x00); | |
183 | cs53l32a_write(sd, 0x05, (u8) 0x00); | |
184 | cs53l32a_write(sd, 0x06, (u8) 0x00); | |
185 | cs53l32a_write(sd, 0x07, (u8) 0x00); | |
f4067fd4 HV |
186 | |
187 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ | |
188 | ||
189 | for (i = 1; i <= 7; i++) { | |
825c6aa2 | 190 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 191 | |
825c6aa2 | 192 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 | 193 | } |
f4067fd4 HV |
194 | return 0; |
195 | } | |
196 | ||
825c6aa2 HV |
197 | static int cs53l32a_remove(struct i2c_client *client) |
198 | { | |
199 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
200 | ||
201 | v4l2_device_unregister_subdev(sd); | |
202 | kfree(sd); | |
203 | return 0; | |
204 | } | |
205 | ||
af294867 JD |
206 | static const struct i2c_device_id cs53l32a_id[] = { |
207 | { "cs53l32a", 0 }, | |
208 | { } | |
209 | }; | |
210 | MODULE_DEVICE_TABLE(i2c, cs53l32a_id); | |
211 | ||
e8e6b991 HV |
212 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { |
213 | .name = "cs53l32a", | |
825c6aa2 | 214 | .remove = cs53l32a_remove, |
e8e6b991 | 215 | .probe = cs53l32a_probe, |
af294867 | 216 | .id_table = cs53l32a_id, |
f4067fd4 | 217 | }; |