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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> | |
e2998e10 | 29 | #include <linux/i2c-id.h> |
33b687cf | 30 | #include <linux/videodev2.h> |
825c6aa2 | 31 | #include <media/v4l2-device.h> |
74cab31c | 32 | #include <media/v4l2-chip-ident.h> |
5fed935c | 33 | #include <media/v4l2-i2c-drv.h> |
f4067fd4 HV |
34 | |
35 | MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC"); | |
36 | MODULE_AUTHOR("Martin Vaughan"); | |
37 | MODULE_LICENSE("GPL"); | |
38 | ||
4c05de9c | 39 | static int debug; |
f4067fd4 HV |
40 | |
41 | module_param(debug, bool, 0644); | |
42 | ||
61a2d07d | 43 | MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); |
f4067fd4 | 44 | |
f4067fd4 HV |
45 | |
46 | /* ----------------------------------------------------------------------- */ | |
47 | ||
825c6aa2 | 48 | static int cs53l32a_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
f4067fd4 | 49 | { |
825c6aa2 HV |
50 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
51 | ||
f4067fd4 HV |
52 | return i2c_smbus_write_byte_data(client, reg, value); |
53 | } | |
54 | ||
825c6aa2 | 55 | static int cs53l32a_read(struct v4l2_subdev *sd, u8 reg) |
f4067fd4 | 56 | { |
825c6aa2 HV |
57 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
58 | ||
f4067fd4 HV |
59 | return i2c_smbus_read_byte_data(client, reg); |
60 | } | |
61 | ||
5325b427 HV |
62 | static int cs53l32a_s_routing(struct v4l2_subdev *sd, |
63 | u32 input, u32 output, u32 config) | |
f4067fd4 | 64 | { |
825c6aa2 HV |
65 | /* There are 2 physical inputs, but the second input can be |
66 | placed in two modes, the first mode bypasses the PGA (gain), | |
67 | the second goes through the PGA. Hence there are three | |
68 | possible inputs to choose from. */ | |
5325b427 HV |
69 | if (input > 2) { |
70 | v4l2_err(sd, "Invalid input %d.\n", input); | |
f4067fd4 HV |
71 | return -EINVAL; |
72 | } | |
5325b427 | 73 | cs53l32a_write(sd, 0x01, 0x01 + (input << 4)); |
825c6aa2 HV |
74 | return 0; |
75 | } | |
76 | ||
77 | static int cs53l32a_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | |
78 | { | |
79 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { | |
80 | ctrl->value = (cs53l32a_read(sd, 0x03) & 0xc0) != 0; | |
81 | return 0; | |
82 | } | |
83 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) | |
84 | return -EINVAL; | |
85 | ctrl->value = (s8)cs53l32a_read(sd, 0x04); | |
86 | return 0; | |
87 | } | |
88 | ||
89 | static int cs53l32a_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | |
90 | { | |
91 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { | |
92 | cs53l32a_write(sd, 0x03, ctrl->value ? 0xf0 : 0x30); | |
93 | return 0; | |
94 | } | |
95 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) | |
96 | return -EINVAL; | |
97 | if (ctrl->value > 12 || ctrl->value < -96) | |
98 | return -EINVAL; | |
99 | cs53l32a_write(sd, 0x04, (u8) ctrl->value); | |
100 | cs53l32a_write(sd, 0x05, (u8) ctrl->value); | |
f4067fd4 HV |
101 | return 0; |
102 | } | |
103 | ||
aecde8b5 | 104 | static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) |
825c6aa2 HV |
105 | { |
106 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
107 | ||
108 | return v4l2_chip_ident_i2c_client(client, | |
109 | chip, V4L2_IDENT_CS53l32A, 0); | |
110 | } | |
111 | ||
112 | static int cs53l32a_log_status(struct v4l2_subdev *sd) | |
113 | { | |
114 | u8 v = cs53l32a_read(sd, 0x01); | |
115 | u8 m = cs53l32a_read(sd, 0x03); | |
116 | s8 vol = cs53l32a_read(sd, 0x04); | |
117 | ||
118 | v4l2_info(sd, "Input: %d%s\n", (v >> 4) & 3, | |
119 | (m & 0xC0) ? " (muted)" : ""); | |
120 | v4l2_info(sd, "Volume: %d dB\n", vol); | |
121 | return 0; | |
122 | } | |
123 | ||
825c6aa2 HV |
124 | /* ----------------------------------------------------------------------- */ |
125 | ||
126 | static const struct v4l2_subdev_core_ops cs53l32a_core_ops = { | |
127 | .log_status = cs53l32a_log_status, | |
128 | .g_chip_ident = cs53l32a_g_chip_ident, | |
129 | .g_ctrl = cs53l32a_g_ctrl, | |
130 | .s_ctrl = cs53l32a_s_ctrl, | |
131 | }; | |
132 | ||
133 | static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = { | |
134 | .s_routing = cs53l32a_s_routing, | |
135 | }; | |
136 | ||
137 | static const struct v4l2_subdev_ops cs53l32a_ops = { | |
138 | .core = &cs53l32a_core_ops, | |
139 | .audio = &cs53l32a_audio_ops, | |
140 | }; | |
141 | ||
f4067fd4 HV |
142 | /* ----------------------------------------------------------------------- */ |
143 | ||
144 | /* i2c implementation */ | |
145 | ||
146 | /* | |
147 | * Generic i2c probe | |
148 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
149 | */ | |
150 | ||
d2653e92 JD |
151 | static int cs53l32a_probe(struct i2c_client *client, |
152 | const struct i2c_device_id *id) | |
f4067fd4 | 153 | { |
825c6aa2 | 154 | struct v4l2_subdev *sd; |
f4067fd4 HV |
155 | int i; |
156 | ||
157 | /* Check if the adapter supports the needed features */ | |
e8e6b991 | 158 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 159 | return -EIO; |
f4067fd4 | 160 | |
af294867 JD |
161 | if (!id) |
162 | strlcpy(client->name, "cs53l32a", sizeof(client->name)); | |
f4067fd4 | 163 | |
4c05de9c HV |
164 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
165 | client->addr << 1, client->adapter->name); | |
f4067fd4 | 166 | |
825c6aa2 HV |
167 | sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL); |
168 | if (sd == NULL) | |
169 | return -ENOMEM; | |
170 | v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops); | |
171 | ||
f4067fd4 | 172 | for (i = 1; i <= 7; i++) { |
825c6aa2 | 173 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 174 | |
825c6aa2 | 175 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 HV |
176 | } |
177 | ||
178 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ | |
179 | ||
825c6aa2 HV |
180 | cs53l32a_write(sd, 0x01, (u8) 0x21); |
181 | cs53l32a_write(sd, 0x02, (u8) 0x29); | |
182 | cs53l32a_write(sd, 0x03, (u8) 0x30); | |
183 | cs53l32a_write(sd, 0x04, (u8) 0x00); | |
184 | cs53l32a_write(sd, 0x05, (u8) 0x00); | |
185 | cs53l32a_write(sd, 0x06, (u8) 0x00); | |
186 | cs53l32a_write(sd, 0x07, (u8) 0x00); | |
f4067fd4 HV |
187 | |
188 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ | |
189 | ||
190 | for (i = 1; i <= 7; i++) { | |
825c6aa2 | 191 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 192 | |
825c6aa2 | 193 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 | 194 | } |
f4067fd4 HV |
195 | return 0; |
196 | } | |
197 | ||
825c6aa2 HV |
198 | static int cs53l32a_remove(struct i2c_client *client) |
199 | { | |
200 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
201 | ||
202 | v4l2_device_unregister_subdev(sd); | |
203 | kfree(sd); | |
204 | return 0; | |
205 | } | |
206 | ||
af294867 JD |
207 | static const struct i2c_device_id cs53l32a_id[] = { |
208 | { "cs53l32a", 0 }, | |
209 | { } | |
210 | }; | |
211 | MODULE_DEVICE_TABLE(i2c, cs53l32a_id); | |
212 | ||
e8e6b991 HV |
213 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { |
214 | .name = "cs53l32a", | |
825c6aa2 | 215 | .remove = cs53l32a_remove, |
e8e6b991 | 216 | .probe = cs53l32a_probe, |
af294867 | 217 | .id_table = cs53l32a_id, |
f4067fd4 | 218 | }; |