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gerrit-public.fairphone.software / kernel / msm-4.9 / 7b3a0d49e3e929b810ade38926342faca53e867d / . / drivers / media / video / ivtv / ivtv-gpio.c
blob: 132fb5f713663769df3a99642c91078c5dcfc02b [file] [log] [blame]
Hans Verkuil1a0adaf2007-04-27 12:31:25 -0300[diff] [blame]1/*
2 gpio functions.
3 Merging GPIO support into driver:
4 Copyright (C) 2004 Chris Kennedy <c@groovy.org>
5 Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include "ivtv-driver.h"
23#include "ivtv-cards.h"
24#include "ivtv-gpio.h"
25#include <media/tuner.h>
26
27/*
28 * GPIO assignment of Yuan MPG600/MPG160
29 *
30 * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
31 * OUTPUT IN1 IN0 AM3 AM2 AM1 AM0
32 * INPUT DM1 DM0
33 *
34 * IN* : Input selection
35 * IN1 IN0
36 * 1 1 N/A
37 * 1 0 Line
38 * 0 1 N/A
39 * 0 0 Tuner
40 *
41 * AM* : Audio Mode
42 * AM3 0: Normal 1: Mixed(Sub+Main channel)
43 * AM2 0: Subchannel 1: Main channel
44 * AM1 0: Stereo 1: Mono
45 * AM0 0: Normal 1: Mute
46 *
47 * DM* : Detected tuner audio Mode
48 * DM1 0: Stereo 1: Mono
49 * DM0 0: Multiplex 1: Normal
50 *
51 * GPIO Initial Settings
52 * MPG600 MPG160
53 * DIR 0x3080 0x7080
54 * OUTPUT 0x000C 0x400C
55 *
56 * Special thanks to Makoto Iguchi <iguchi@tahoo.org> and Mr. Anonymous
57 * for analyzing GPIO of MPG160.
58 *
59 *****************************************************************************
60 *
61 * GPIO assignment of Avermedia M179 (per information direct from AVerMedia)
62 *
63 * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
64 * OUTPUT IN0 AM0 IN1 AM1 AM2 IN2 BR0 BR1
65 * INPUT
66 *
67 * IN* : Input selection
68 * IN0 IN1 IN2
69 * * 1 * Mute
70 * 0 0 0 Line-In
71 * 1 0 0 TV Tuner Audio
72 * 0 0 1 FM Audio
73 * 1 0 1 Mute
74 *
75 * AM* : Audio Mode
76 * AM0 AM1 AM2
77 * 0 0 0 TV Tuner Audio: L_OUT=(L+R)/2, R_OUT=SAP
78 * 0 0 1 TV Tuner Audio: L_OUT=R_OUT=SAP (SAP)
79 * 0 1 0 TV Tuner Audio: L_OUT=L, R_OUT=R (stereo)
80 * 0 1 1 TV Tuner Audio: mute
81 * 1 * * TV Tuner Audio: L_OUT=R_OUT=(L+R)/2 (mono)
82 *
83 * BR* : Audio Sample Rate (BR stands for bitrate for some reason)
84 * BR0 BR1
85 * 0 0 32 kHz
86 * 0 1 44.1 kHz
87 * 1 0 48 kHz
88 *
89 * DM* : Detected tuner audio Mode
90 * Unknown currently
91 *
92 * Special thanks to AVerMedia Technologies, Inc. and Jiun-Kuei Jung at
93 * AVerMedia for providing the GPIO information used to add support
94 * for the M179 cards.
95 */
96
97/********************* GPIO stuffs *********************/
98
99/* GPIO registers */
100#define IVTV_REG_GPIO_IN 0x9008
101#define IVTV_REG_GPIO_OUT 0x900c
102#define IVTV_REG_GPIO_DIR 0x9020
103
104void ivtv_reset_ir_gpio(struct ivtv *itv)
105{
106 int curdir, curout;
107
108 if (itv->card->type != IVTV_CARD_PVR_150)
109 return;
110 IVTV_DEBUG_INFO("Resetting PVR150 IR\n");
111 curout = read_reg(IVTV_REG_GPIO_OUT);
112 curdir = read_reg(IVTV_REG_GPIO_DIR);
113 curdir |= 0x80;
114 write_reg(curdir, IVTV_REG_GPIO_DIR);
115 curout = (curout & ~0xF) | 1;
116 write_reg(curout, IVTV_REG_GPIO_OUT);
117 /* We could use something else for smaller time */
Robert P. J. Day97989ad2007-07-16 10:47:51 -0300[diff] [blame]118 schedule_timeout_interruptible(msecs_to_jiffies(1));
Hans Verkuil1a0adaf2007-04-27 12:31:25 -0300[diff] [blame]119 curout |= 2;
120 write_reg(curout, IVTV_REG_GPIO_OUT);
121 curdir &= ~0x80;
122 write_reg(curdir, IVTV_REG_GPIO_DIR);
123}
124
Hans Verkuil1a0adaf2007-04-27 12:31:25 -0300[diff] [blame]125
126void ivtv_gpio_init(struct ivtv *itv)
127{
128 if (itv->card->gpio_init.direction == 0)
129 return;
130
131 IVTV_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n",
132 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT));
133
134 /* init output data then direction */
135 write_reg(itv->card->gpio_init.initial_value, IVTV_REG_GPIO_OUT);
136 write_reg(itv->card->gpio_init.direction, IVTV_REG_GPIO_DIR);
137}
138
139static struct v4l2_queryctrl gpio_ctrl_mute = {
140 .id = V4L2_CID_AUDIO_MUTE,
141 .type = V4L2_CTRL_TYPE_BOOLEAN,
142 .name = "Mute",
143 .minimum = 0,
144 .maximum = 1,
145 .step = 1,
146 .default_value = 1,
147 .flags = 0,
148};
149
150int ivtv_gpio(struct ivtv *itv, unsigned int command, void *arg)
151{
152 struct v4l2_tuner *tuner = arg;
153 struct v4l2_control *ctrl = arg;
154 struct v4l2_routing *route = arg;
155 u16 mask, data;
156
157 switch (command) {
158 case VIDIOC_INT_AUDIO_CLOCK_FREQ:
159 mask = itv->card->gpio_audio_freq.mask;
160 switch (*(u32 *)arg) {
161 case 32000:
162 data = itv->card->gpio_audio_freq.f32000;
163 break;
164 case 44100:
165 data = itv->card->gpio_audio_freq.f44100;
166 break;
167 case 48000:
168 default:
169 data = itv->card->gpio_audio_freq.f48000;
170 break;
171 }
172 break;
173
174 case VIDIOC_G_TUNER:
175 mask = itv->card->gpio_audio_detect.mask;
176 if (mask == 0 || (read_reg(IVTV_REG_GPIO_IN) & mask))
177 tuner->rxsubchans = V4L2_TUNER_MODE_STEREO |
178 V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
179 else
180 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
181 return 0;
182
183 case VIDIOC_S_TUNER:
184 mask = itv->card->gpio_audio_mode.mask;
185 switch (tuner->audmode) {
186 case V4L2_TUNER_MODE_LANG1:
187 data = itv->card->gpio_audio_mode.lang1;
188 break;
189 case V4L2_TUNER_MODE_LANG2:
190 data = itv->card->gpio_audio_mode.lang2;
191 break;
192 case V4L2_TUNER_MODE_MONO:
193 data = itv->card->gpio_audio_mode.mono;
194 break;
195 case V4L2_TUNER_MODE_STEREO:
196 case V4L2_TUNER_MODE_LANG1_LANG2:
197 default:
198 data = itv->card->gpio_audio_mode.stereo;
199 break;
200 }
201 break;
202
203 case AUDC_SET_RADIO:
204 mask = itv->card->gpio_audio_input.mask;
205 data = itv->card->gpio_audio_input.radio;
206 break;
207
208 case VIDIOC_S_STD:
209 mask = itv->card->gpio_audio_input.mask;
210 data = itv->card->gpio_audio_input.tuner;
211 break;
212
213 case VIDIOC_INT_S_AUDIO_ROUTING:
214 if (route->input > 2)
215 return -EINVAL;
216 mask = itv->card->gpio_audio_input.mask;
217 switch (route->input) {
218 case 0:
219 data = itv->card->gpio_audio_input.tuner;
220 break;
221 case 1:
222 data = itv->card->gpio_audio_input.linein;
223 break;
224 case 2:
225 default:
226 data = itv->card->gpio_audio_input.radio;
227 break;
228 }
229 break;
230
231 case VIDIOC_G_CTRL:
232 if (ctrl->id != V4L2_CID_AUDIO_MUTE)
233 return -EINVAL;
234 mask = itv->card->gpio_audio_mute.mask;
235 data = itv->card->gpio_audio_mute.mute;
236 ctrl->value = (read_reg(IVTV_REG_GPIO_OUT) & mask) == data;
237 return 0;
238
239 case VIDIOC_S_CTRL:
240 if (ctrl->id != V4L2_CID_AUDIO_MUTE)
241 return -EINVAL;
242 mask = itv->card->gpio_audio_mute.mask;
243 data = ctrl->value ? itv->card->gpio_audio_mute.mute : 0;
244 break;
245
246 case VIDIOC_QUERYCTRL:
247 {
248 struct v4l2_queryctrl *qc = arg;
249
250 if (qc->id != V4L2_CID_AUDIO_MUTE)
251 return -EINVAL;
252 *qc = gpio_ctrl_mute;
253 return 0;
254 }
255
256 case VIDIOC_LOG_STATUS:
257 IVTV_INFO("GPIO status: DIR=0x%04x OUT=0x%04x IN=0x%04x\n",
258 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT),
259 read_reg(IVTV_REG_GPIO_IN));
260 return 0;
261
262 case VIDIOC_INT_S_VIDEO_ROUTING:
263 if (route->input > 2) /* 0:Tuner 1:Composite 2:S-Video */
264 return -EINVAL;
265 mask = itv->card->gpio_video_input.mask;
266 if (route->input == 0)
267 data = itv->card->gpio_video_input.tuner;
268 else if (route->input == 1)
269 data = itv->card->gpio_video_input.composite;
270 else
271 data = itv->card->gpio_video_input.svideo;
272 break;
273
274 default:
275 return -EINVAL;
276 }
277 if (mask)
278 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
279 return 0;
280}