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review.evervolv.com / android_kernel_oneplus_msm8996 / c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 / . / sound / usb / 6fire / control.c
blob: 248463511186380b707d71dd2f240dd5596dabf5 [file] [log] [blame]
Torsten Schenkc6d43ba2011-01-24 18:45:30 +0100[diff] [blame^]1/*
2 * Linux driver for TerraTec DMX 6Fire USB
3 *
4 * Mixer control
5 *
6 * Author: Torsten Schenk <torsten.schenk@zoho.com>
7 * Created: Jan 01, 2011
8 * Version: 0.3.0
9 * Copyright: (C) Torsten Schenk
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 */
16
17#include <linux/interrupt.h>
18#include <sound/control.h>
19
20#include "control.h"
21#include "comm.h"
22#include "chip.h"
23
24static char *opt_coax_texts[2] = { "Optical", "Coax" };
25static char *line_phono_texts[2] = { "Line", "Phono" };
26
27/*
28 * calculated with $value\[i\] = 128 \cdot sqrt[3]{\frac{i}{128}}$
29 * this is done because the linear values cause rapid degredation
30 * of volume in the uppermost region.
31 */
32static const u8 log_volume_table[128] = {
33 0x00, 0x19, 0x20, 0x24, 0x28, 0x2b, 0x2e, 0x30, 0x32, 0x34,
34 0x36, 0x38, 0x3a, 0x3b, 0x3d, 0x3e, 0x40, 0x41, 0x42, 0x43,
35 0x44, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e,
36 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x53, 0x54, 0x55, 0x56,
37 0x56, 0x57, 0x58, 0x58, 0x59, 0x5a, 0x5b, 0x5b, 0x5c, 0x5c,
38 0x5d, 0x5e, 0x5e, 0x5f, 0x60, 0x60, 0x61, 0x61, 0x62, 0x62,
39 0x63, 0x63, 0x64, 0x65, 0x65, 0x66, 0x66, 0x67, 0x67, 0x68,
40 0x68, 0x69, 0x69, 0x6a, 0x6a, 0x6b, 0x6b, 0x6c, 0x6c, 0x6c,
41 0x6d, 0x6d, 0x6e, 0x6e, 0x6f, 0x6f, 0x70, 0x70, 0x70, 0x71,
42 0x71, 0x72, 0x72, 0x73, 0x73, 0x73, 0x74, 0x74, 0x75, 0x75,
43 0x75, 0x76, 0x76, 0x77, 0x77, 0x77, 0x78, 0x78, 0x78, 0x79,
44 0x79, 0x7a, 0x7a, 0x7a, 0x7b, 0x7b, 0x7b, 0x7c, 0x7c, 0x7c,
45 0x7d, 0x7d, 0x7d, 0x7e, 0x7e, 0x7e, 0x7f, 0x7f };
46
47/*
48 * data that needs to be sent to device. sets up card internal stuff.
49 * values dumped from windows driver and filtered by trial'n'error.
50 */
51static const struct {
52 u8 type;
53 u8 reg;
54 u8 value;
55}
56init_data[] = {
57 { 0x22, 0x00, 0x00 }, { 0x20, 0x00, 0x08 }, { 0x22, 0x01, 0x01 },
58 { 0x20, 0x01, 0x08 }, { 0x22, 0x02, 0x00 }, { 0x20, 0x02, 0x08 },
59 { 0x22, 0x03, 0x00 }, { 0x20, 0x03, 0x08 }, { 0x22, 0x04, 0x00 },
60 { 0x20, 0x04, 0x08 }, { 0x22, 0x05, 0x01 }, { 0x20, 0x05, 0x08 },
61 { 0x22, 0x04, 0x01 }, { 0x12, 0x04, 0x00 }, { 0x12, 0x05, 0x00 },
62 { 0x12, 0x0d, 0x78 }, { 0x12, 0x21, 0x82 }, { 0x12, 0x22, 0x80 },
63 { 0x12, 0x23, 0x00 }, { 0x12, 0x06, 0x02 }, { 0x12, 0x03, 0x00 },
64 { 0x12, 0x02, 0x00 }, { 0x22, 0x03, 0x01 },
65 { 0 } /* TERMINATING ENTRY */
66};
67
68static void usb6fire_control_master_vol_update(struct control_runtime *rt)
69{
70 struct comm_runtime *comm_rt = rt->chip->comm;
71 if (comm_rt) {
72 /* set volume */
73 comm_rt->write8(comm_rt, 0x12, 0x0f, 0x7f -
74 log_volume_table[rt->master_vol]);
75 /* unmute */
76 comm_rt->write8(comm_rt, 0x12, 0x0e, 0x00);
77 }
78}
79
80static void usb6fire_control_line_phono_update(struct control_runtime *rt)
81{
82 struct comm_runtime *comm_rt = rt->chip->comm;
83 if (comm_rt) {
84 comm_rt->write8(comm_rt, 0x22, 0x02, rt->line_phono_switch);
85 comm_rt->write8(comm_rt, 0x21, 0x02, rt->line_phono_switch);
86 }
87}
88
89static void usb6fire_control_opt_coax_update(struct control_runtime *rt)
90{
91 struct comm_runtime *comm_rt = rt->chip->comm;
92 if (comm_rt) {
93 comm_rt->write8(comm_rt, 0x22, 0x00, rt->opt_coax_switch);
94 comm_rt->write8(comm_rt, 0x21, 0x00, rt->opt_coax_switch);
95 }
96}
97
98static int usb6fire_control_master_vol_info(struct snd_kcontrol *kcontrol,
99 struct snd_ctl_elem_info *uinfo)
100{
101 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
102 uinfo->count = 1;
103 uinfo->value.integer.min = 0;
104 uinfo->value.integer.max = 127;
105 return 0;
106}
107
108static int usb6fire_control_master_vol_put(struct snd_kcontrol *kcontrol,
109 struct snd_ctl_elem_value *ucontrol)
110{
111 struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
112 int changed = 0;
113 if (rt->master_vol != ucontrol->value.integer.value[0]) {
114 rt->master_vol = ucontrol->value.integer.value[0];
115 usb6fire_control_master_vol_update(rt);
116 changed = 1;
117 }
118 return changed;
119}
120
121static int usb6fire_control_master_vol_get(struct snd_kcontrol *kcontrol,
122 struct snd_ctl_elem_value *ucontrol)
123{
124 struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
125 ucontrol->value.integer.value[0] = rt->master_vol;
126 return 0;
127}
128
129static int usb6fire_control_line_phono_info(struct snd_kcontrol *kcontrol,
130 struct snd_ctl_elem_info *uinfo)
131{
132 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
133 uinfo->count = 1;
134 uinfo->value.enumerated.items = 2;
135 if (uinfo->value.enumerated.item > 1)
136 uinfo->value.enumerated.item = 1;
137 strcpy(uinfo->value.enumerated.name,
138 line_phono_texts[uinfo->value.enumerated.item]);
139 return 0;
140}
141
142static int usb6fire_control_line_phono_put(struct snd_kcontrol *kcontrol,
143 struct snd_ctl_elem_value *ucontrol)
144{
145 struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
146 int changed = 0;
147 if (rt->line_phono_switch != ucontrol->value.integer.value[0]) {
148 rt->line_phono_switch = ucontrol->value.integer.value[0];
149 usb6fire_control_line_phono_update(rt);
150 changed = 1;
151 }
152 return changed;
153}
154
155static int usb6fire_control_line_phono_get(struct snd_kcontrol *kcontrol,
156 struct snd_ctl_elem_value *ucontrol)
157{
158 struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
159 ucontrol->value.integer.value[0] = rt->line_phono_switch;
160 return 0;
161}
162
163static int usb6fire_control_opt_coax_info(struct snd_kcontrol *kcontrol,
164 struct snd_ctl_elem_info *uinfo)
165{
166 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
167 uinfo->count = 1;
168 uinfo->value.enumerated.items = 2;
169 if (uinfo->value.enumerated.item > 1)
170 uinfo->value.enumerated.item = 1;
171 strcpy(uinfo->value.enumerated.name,
172 opt_coax_texts[uinfo->value.enumerated.item]);
173 return 0;
174}
175
176static int usb6fire_control_opt_coax_put(struct snd_kcontrol *kcontrol,
177 struct snd_ctl_elem_value *ucontrol)
178{
179 struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
180 int changed = 0;
181
182 if (rt->opt_coax_switch != ucontrol->value.enumerated.item[0]) {
183 rt->opt_coax_switch = ucontrol->value.enumerated.item[0];
184 usb6fire_control_opt_coax_update(rt);
185 changed = 1;
186 }
187 return changed;
188}
189
190static int usb6fire_control_opt_coax_get(struct snd_kcontrol *kcontrol,
191 struct snd_ctl_elem_value *ucontrol)
192{
193 struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
194 ucontrol->value.enumerated.item[0] = rt->opt_coax_switch;
195 return 0;
196}
197
198static struct __devinitdata snd_kcontrol_new elements[] = {
199 {
200 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
201 .name = "Master Playback Volume",
202 .index = 0,
203 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
204 .info = usb6fire_control_master_vol_info,
205 .get = usb6fire_control_master_vol_get,
206 .put = usb6fire_control_master_vol_put
207 },
208 {
209 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
210 .name = "Line/Phono Capture Route",
211 .index = 0,
212 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
213 .info = usb6fire_control_line_phono_info,
214 .get = usb6fire_control_line_phono_get,
215 .put = usb6fire_control_line_phono_put
216 },
217 {
218 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
219 .name = "Opt/Coax Capture Route",
220 .index = 0,
221 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
222 .info = usb6fire_control_opt_coax_info,
223 .get = usb6fire_control_opt_coax_get,
224 .put = usb6fire_control_opt_coax_put
225 },
226 {}
227};
228
229int __devinit usb6fire_control_init(struct sfire_chip *chip)
230{
231 int i;
232 int ret;
233 struct control_runtime *rt = kzalloc(sizeof(struct control_runtime),
234 GFP_KERNEL);
235 struct comm_runtime *comm_rt = chip->comm;
236
237 if (!rt)
238 return -ENOMEM;
239
240 rt->chip = chip;
241
242 i = 0;
243 while (init_data[i].type) {
244 comm_rt->write8(comm_rt, init_data[i].type, init_data[i].reg,
245 init_data[i].value);
246 i++;
247 }
248
249 usb6fire_control_opt_coax_update(rt);
250 usb6fire_control_line_phono_update(rt);
251 usb6fire_control_master_vol_update(rt);
252
253 i = 0;
254 while (elements[i].name) {
255 ret = snd_ctl_add(chip->card, snd_ctl_new1(&elements[i], rt));
256 if (ret < 0) {
257 kfree(rt);
258 snd_printk(KERN_ERR PREFIX "cannot add control.\n");
259 return ret;
260 }
261 i++;
262 }
263
264 chip->control = rt;
265 return 0;
266}
267
268void usb6fire_control_abort(struct sfire_chip *chip)
269{}
270
271void usb6fire_control_destroy(struct sfire_chip *chip)
272{
273 kfree(chip->control);
274 chip->control = NULL;
275}