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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
f4067fd4 HV |
2 | /* |
3 | * cs53l32a (Adaptec AVC-2010 and AVC-2410) i2c ivtv driver. | |
4 | * Copyright (C) 2005 Martin Vaughan | |
5 | * | |
6 | * Audio source switching for Adaptec AVC-2410 added by Trev Jackson | |
f4067fd4 HV |
7 | */ |
8 | ||
9 | ||
10 | #include <linux/module.h> | |
11 | #include <linux/types.h> | |
5a0e3ad6 | 12 | #include <linux/slab.h> |
f4067fd4 | 13 | #include <linux/ioctl.h> |
7c0f6ba6 | 14 | #include <linux/uaccess.h> |
f4067fd4 | 15 | #include <linux/i2c.h> |
33b687cf | 16 | #include <linux/videodev2.h> |
825c6aa2 | 17 | #include <media/v4l2-device.h> |
251190cf | 18 | #include <media/v4l2-ctrls.h> |
f4067fd4 HV |
19 | |
20 | MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC"); | |
21 | MODULE_AUTHOR("Martin Vaughan"); | |
22 | MODULE_LICENSE("GPL"); | |
23 | ||
90ab5ee9 | 24 | static bool debug; |
f4067fd4 HV |
25 | |
26 | module_param(debug, bool, 0644); | |
27 | ||
61a2d07d | 28 | MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On"); |
f4067fd4 | 29 | |
f4067fd4 | 30 | |
251190cf HV |
31 | struct cs53l32a_state { |
32 | struct v4l2_subdev sd; | |
33 | struct v4l2_ctrl_handler hdl; | |
34 | }; | |
35 | ||
36 | static inline struct cs53l32a_state *to_state(struct v4l2_subdev *sd) | |
37 | { | |
38 | return container_of(sd, struct cs53l32a_state, sd); | |
39 | } | |
40 | ||
41 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) | |
42 | { | |
43 | return &container_of(ctrl->handler, struct cs53l32a_state, hdl)->sd; | |
44 | } | |
45 | ||
f4067fd4 HV |
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 | ||
251190cf | 77 | static int cs53l32a_s_ctrl(struct v4l2_ctrl *ctrl) |
825c6aa2 | 78 | { |
251190cf | 79 | struct v4l2_subdev *sd = to_sd(ctrl); |
825c6aa2 | 80 | |
251190cf HV |
81 | switch (ctrl->id) { |
82 | case V4L2_CID_AUDIO_MUTE: | |
83 | cs53l32a_write(sd, 0x03, ctrl->val ? 0xf0 : 0x30); | |
84 | return 0; | |
85 | case V4L2_CID_AUDIO_VOLUME: | |
86 | cs53l32a_write(sd, 0x04, (u8)ctrl->val); | |
87 | cs53l32a_write(sd, 0x05, (u8)ctrl->val); | |
825c6aa2 HV |
88 | return 0; |
89 | } | |
251190cf | 90 | return -EINVAL; |
f4067fd4 HV |
91 | } |
92 | ||
825c6aa2 HV |
93 | static int cs53l32a_log_status(struct v4l2_subdev *sd) |
94 | { | |
251190cf | 95 | struct cs53l32a_state *state = to_state(sd); |
825c6aa2 | 96 | u8 v = cs53l32a_read(sd, 0x01); |
825c6aa2 | 97 | |
251190cf HV |
98 | v4l2_info(sd, "Input: %d\n", (v >> 4) & 3); |
99 | v4l2_ctrl_handler_log_status(&state->hdl, sd->name); | |
825c6aa2 HV |
100 | return 0; |
101 | } | |
102 | ||
825c6aa2 HV |
103 | /* ----------------------------------------------------------------------- */ |
104 | ||
251190cf HV |
105 | static const struct v4l2_ctrl_ops cs53l32a_ctrl_ops = { |
106 | .s_ctrl = cs53l32a_s_ctrl, | |
107 | }; | |
108 | ||
825c6aa2 HV |
109 | static const struct v4l2_subdev_core_ops cs53l32a_core_ops = { |
110 | .log_status = cs53l32a_log_status, | |
825c6aa2 HV |
111 | }; |
112 | ||
113 | static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = { | |
114 | .s_routing = cs53l32a_s_routing, | |
115 | }; | |
116 | ||
117 | static const struct v4l2_subdev_ops cs53l32a_ops = { | |
118 | .core = &cs53l32a_core_ops, | |
119 | .audio = &cs53l32a_audio_ops, | |
120 | }; | |
121 | ||
f4067fd4 HV |
122 | /* ----------------------------------------------------------------------- */ |
123 | ||
124 | /* i2c implementation */ | |
125 | ||
126 | /* | |
127 | * Generic i2c probe | |
128 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
129 | */ | |
130 | ||
d2653e92 JD |
131 | static int cs53l32a_probe(struct i2c_client *client, |
132 | const struct i2c_device_id *id) | |
f4067fd4 | 133 | { |
251190cf | 134 | struct cs53l32a_state *state; |
825c6aa2 | 135 | struct v4l2_subdev *sd; |
f4067fd4 HV |
136 | int i; |
137 | ||
138 | /* Check if the adapter supports the needed features */ | |
e8e6b991 | 139 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 140 | return -EIO; |
f4067fd4 | 141 | |
af294867 | 142 | if (!id) |
c0decac1 | 143 | strscpy(client->name, "cs53l32a", sizeof(client->name)); |
f4067fd4 | 144 | |
4c05de9c HV |
145 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
146 | client->addr << 1, client->adapter->name); | |
f4067fd4 | 147 | |
c02b211d | 148 | state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); |
251190cf | 149 | if (state == NULL) |
825c6aa2 | 150 | return -ENOMEM; |
251190cf | 151 | sd = &state->sd; |
825c6aa2 HV |
152 | v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops); |
153 | ||
f4067fd4 | 154 | for (i = 1; i <= 7; i++) { |
825c6aa2 | 155 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 156 | |
825c6aa2 | 157 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 HV |
158 | } |
159 | ||
251190cf HV |
160 | v4l2_ctrl_handler_init(&state->hdl, 2); |
161 | v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops, | |
162 | V4L2_CID_AUDIO_VOLUME, -96, 12, 1, 0); | |
163 | v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops, | |
164 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); | |
165 | sd->ctrl_handler = &state->hdl; | |
166 | if (state->hdl.error) { | |
167 | int err = state->hdl.error; | |
168 | ||
169 | v4l2_ctrl_handler_free(&state->hdl); | |
251190cf HV |
170 | return err; |
171 | } | |
172 | ||
f4067fd4 HV |
173 | /* Set cs53l32a internal register for Adaptec 2010/2410 setup */ |
174 | ||
251190cf HV |
175 | cs53l32a_write(sd, 0x01, 0x21); |
176 | cs53l32a_write(sd, 0x02, 0x29); | |
177 | cs53l32a_write(sd, 0x03, 0x30); | |
178 | cs53l32a_write(sd, 0x04, 0x00); | |
179 | cs53l32a_write(sd, 0x05, 0x00); | |
180 | cs53l32a_write(sd, 0x06, 0x00); | |
181 | cs53l32a_write(sd, 0x07, 0x00); | |
f4067fd4 HV |
182 | |
183 | /* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */ | |
184 | ||
185 | for (i = 1; i <= 7; i++) { | |
825c6aa2 | 186 | u8 v = cs53l32a_read(sd, i); |
f4067fd4 | 187 | |
825c6aa2 | 188 | v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v); |
f4067fd4 | 189 | } |
f4067fd4 HV |
190 | return 0; |
191 | } | |
192 | ||
825c6aa2 HV |
193 | static int cs53l32a_remove(struct i2c_client *client) |
194 | { | |
195 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
251190cf | 196 | struct cs53l32a_state *state = to_state(sd); |
825c6aa2 HV |
197 | |
198 | v4l2_device_unregister_subdev(sd); | |
251190cf | 199 | v4l2_ctrl_handler_free(&state->hdl); |
825c6aa2 HV |
200 | return 0; |
201 | } | |
202 | ||
af294867 JD |
203 | static const struct i2c_device_id cs53l32a_id[] = { |
204 | { "cs53l32a", 0 }, | |
205 | { } | |
206 | }; | |
207 | MODULE_DEVICE_TABLE(i2c, cs53l32a_id); | |
208 | ||
50337ace HV |
209 | static struct i2c_driver cs53l32a_driver = { |
210 | .driver = { | |
50337ace HV |
211 | .name = "cs53l32a", |
212 | }, | |
213 | .probe = cs53l32a_probe, | |
214 | .remove = cs53l32a_remove, | |
215 | .id_table = cs53l32a_id, | |
f4067fd4 | 216 | }; |
50337ace | 217 | |
c6e8d86f | 218 | module_i2c_driver(cs53l32a_driver); |