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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> |
f4067fd4 | 29 | #include <linux/videodev.h> |
fac9e899 | 30 | #include <media/v4l2-common.h> |
74cab31c | 31 | #include <media/v4l2-chip-ident.h> |
e8e6b991 | 32 | #include <media/v4l2-i2c-drv-legacy.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 | ||
42 | MODULE_PARM_DESC(debug, "Debugging messages\n\t\t\t0=Off (default), 1=On"); | |
43 | ||
f4067fd4 HV |
44 | static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END }; |
45 | ||
46 | ||
47 | I2C_CLIENT_INSMOD; | |
48 | ||
49 | /* ----------------------------------------------------------------------- */ | |
50 | ||
51 | static int cs53l32a_write(struct i2c_client *client, u8 reg, u8 value) | |
52 | { | |
53 | return i2c_smbus_write_byte_data(client, reg, value); | |
54 | } | |
55 | ||
56 | static int cs53l32a_read(struct i2c_client *client, u8 reg) | |
57 | { | |
58 | return i2c_smbus_read_byte_data(client, reg); | |
59 | } | |
60 | ||
4c05de9c | 61 | static int cs53l32a_command(struct i2c_client *client, unsigned cmd, void *arg) |
f4067fd4 | 62 | { |
7fa033b1 | 63 | struct v4l2_routing *route = arg; |
93605351 | 64 | struct v4l2_control *ctrl = arg; |
f4067fd4 HV |
65 | |
66 | switch (cmd) { | |
7fa033b1 HV |
67 | case VIDIOC_INT_G_AUDIO_ROUTING: |
68 | route->input = (cs53l32a_read(client, 0x01) >> 4) & 3; | |
69 | route->output = 0; | |
70 | break; | |
71 | ||
72 | case VIDIOC_INT_S_AUDIO_ROUTING: | |
93605351 HV |
73 | /* There are 2 physical inputs, but the second input can be |
74 | placed in two modes, the first mode bypasses the PGA (gain), | |
75 | the second goes through the PGA. Hence there are three | |
76 | possible inputs to choose from. */ | |
7fa033b1 HV |
77 | if (route->input > 2) { |
78 | v4l_err(client, "Invalid input %d.\n", route->input); | |
f4067fd4 HV |
79 | return -EINVAL; |
80 | } | |
7fa033b1 | 81 | cs53l32a_write(client, 0x01, 0x01 + (route->input << 4)); |
93605351 HV |
82 | break; |
83 | ||
93605351 HV |
84 | case VIDIOC_G_CTRL: |
85 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { | |
86 | ctrl->value = (cs53l32a_read(client, 0x03) & 0xc0) != 0; | |
87 | break; | |
88 | } | |
89 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) | |
90 | return -EINVAL; | |
91 | ctrl->value = (s8)cs53l32a_read(client, 0x04); | |
f4067fd4 HV |
92 | break; |
93 | ||
94 | case VIDIOC_S_CTRL: | |
93605351 HV |
95 | if (ctrl->id == V4L2_CID_AUDIO_MUTE) { |
96 | cs53l32a_write(client, 0x03, ctrl->value ? 0xf0 : 0x30); | |
f4067fd4 HV |
97 | break; |
98 | } | |
93605351 HV |
99 | if (ctrl->id != V4L2_CID_AUDIO_VOLUME) |
100 | return -EINVAL; | |
101 | if (ctrl->value > 12 || ctrl->value < -96) | |
102 | return -EINVAL; | |
103 | cs53l32a_write(client, 0x04, (u8) ctrl->value); | |
104 | cs53l32a_write(client, 0x05, (u8) ctrl->value); | |
105 | break; | |
f4067fd4 | 106 | |
74cab31c | 107 | case VIDIOC_G_CHIP_IDENT: |
4c05de9c HV |
108 | return v4l2_chip_ident_i2c_client(client, |
109 | arg, V4L2_IDENT_CS53l32A, 0); | |
74cab31c | 110 | |
f4067fd4 HV |
111 | case VIDIOC_LOG_STATUS: |
112 | { | |
113 | u8 v = cs53l32a_read(client, 0x01); | |
114 | u8 m = cs53l32a_read(client, 0x03); | |
93605351 | 115 | s8 vol = cs53l32a_read(client, 0x04); |
f4067fd4 | 116 | |
fac9e899 | 117 | v4l_info(client, "Input: %d%s\n", (v >> 4) & 3, |
f4067fd4 | 118 | (m & 0xC0) ? " (muted)" : ""); |
fac9e899 | 119 | v4l_info(client, "Volume: %d dB\n", vol); |
f4067fd4 HV |
120 | break; |
121 | } | |
122 | ||
123 | default: | |
124 | return -EINVAL; | |
125 | } | |
126 | return 0; | |
127 | } | |
128 | ||
129 | /* ----------------------------------------------------------------------- */ | |
130 | ||
131 | /* i2c implementation */ | |
132 | ||
133 | /* | |
134 | * Generic i2c probe | |
135 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
136 | */ | |
137 | ||
e8e6b991 | 138 | static int cs53l32a_probe(struct i2c_client *client) |
f4067fd4 | 139 | { |
f4067fd4 HV |
140 | int i; |
141 | ||
142 | /* Check if the adapter supports the needed features */ | |
e8e6b991 | 143 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 144 | return -EIO; |
f4067fd4 | 145 | |
f4067fd4 HV |
146 | snprintf(client->name, sizeof(client->name) - 1, "cs53l32a"); |
147 | ||
4c05de9c HV |
148 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
149 | client->addr << 1, client->adapter->name); | |
f4067fd4 HV |
150 | |
151 | for (i = 1; i <= 7; i++) { | |
152 | u8 v = cs53l32a_read(client, i); | |
153 | ||
f167cb4e | 154 | v4l_dbg(1, debug, client, "Read Reg %d %02x\n", i, v); |
f4067fd4 HV |
155 | } |
156 | ||
157 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ | |
158 | ||
159 | cs53l32a_write(client, 0x01, (u8) 0x21); | |
160 | cs53l32a_write(client, 0x02, (u8) 0x29); | |
161 | cs53l32a_write(client, 0x03, (u8) 0x30); | |
162 | cs53l32a_write(client, 0x04, (u8) 0x00); | |
163 | cs53l32a_write(client, 0x05, (u8) 0x00); | |
164 | cs53l32a_write(client, 0x06, (u8) 0x00); | |
165 | cs53l32a_write(client, 0x07, (u8) 0x00); | |
166 | ||
167 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ | |
168 | ||
169 | for (i = 1; i <= 7; i++) { | |
170 | u8 v = cs53l32a_read(client, i); | |
171 | ||
f167cb4e | 172 | v4l_dbg(1, debug, client, "Read Reg %d %02x\n", i, v); |
f4067fd4 | 173 | } |
f4067fd4 HV |
174 | return 0; |
175 | } | |
176 | ||
e8e6b991 HV |
177 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { |
178 | .name = "cs53l32a", | |
179 | .driverid = I2C_DRIVERID_CS53L32A, | |
f4067fd4 | 180 | .command = cs53l32a_command, |
e8e6b991 | 181 | .probe = cs53l32a_probe, |
f4067fd4 HV |
182 | }; |
183 |