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 "tuner-xc2028.h"
26 #include <media/tuner.h>
27
28 /*
29 * GPIO assignment of Yuan MPG600/MPG160
30 *
31 * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
32 * OUTPUT IN1 IN0 AM3 AM2 AM1 AM0
33 * INPUT DM1 DM0
34 *
35 * IN* : Input selection
36 * IN1 IN0
37 * 1 1 N/A
38 * 1 0 Line
39 * 0 1 N/A
40 * 0 0 Tuner
41 *
42 * AM* : Audio Mode
43 * AM3 0: Normal 1: Mixed(Sub+Main channel)
44 * AM2 0: Subchannel 1: Main channel
45 * AM1 0: Stereo 1: Mono
46 * AM0 0: Normal 1: Mute
47 *
48 * DM* : Detected tuner audio Mode
49 * DM1 0: Stereo 1: Mono
50 * DM0 0: Multiplex 1: Normal
51 *
52 * GPIO Initial Settings
53 * MPG600 MPG160
54 * DIR 0x3080 0x7080
55 * OUTPUT 0x000C 0x400C
56 *
57 * Special thanks to Makoto Iguchi <iguchi@tahoo.org> and Mr. Anonymous
58 * for analyzing GPIO of MPG160.
59 *
60 *****************************************************************************
61 *
62 * GPIO assignment of Avermedia M179 (per information direct from AVerMedia)
63 *
64 * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
65 * OUTPUT IN0 AM0 IN1 AM1 AM2 IN2 BR0 BR1
66 * INPUT
67 *
68 * IN* : Input selection
69 * IN0 IN1 IN2
70 * * 1 * Mute
71 * 0 0 0 Line-In
72 * 1 0 0 TV Tuner Audio
73 * 0 0 1 FM Audio
74 * 1 0 1 Mute
75 *
76 * AM* : Audio Mode
77 * AM0 AM1 AM2
78 * 0 0 0 TV Tuner Audio: L_OUT=(L+R)/2, R_OUT=SAP
79 * 0 0 1 TV Tuner Audio: L_OUT=R_OUT=SAP (SAP)
80 * 0 1 0 TV Tuner Audio: L_OUT=L, R_OUT=R (stereo)
81 * 0 1 1 TV Tuner Audio: mute
82 * 1 * * TV Tuner Audio: L_OUT=R_OUT=(L+R)/2 (mono)
83 *
84 * BR* : Audio Sample Rate (BR stands for bitrate for some reason)
85 * BR0 BR1
86 * 0 0 32 kHz
87 * 0 1 44.1 kHz
88 * 1 0 48 kHz
89 *
90 * DM* : Detected tuner audio Mode
91 * Unknown currently
92 *
93 * Special thanks to AVerMedia Technologies, Inc. and Jiun-Kuei Jung at
94 * AVerMedia for providing the GPIO information used to add support
95 * for the M179 cards.
96 */
97
98 /********************* GPIO stuffs *********************/
99
100 /* GPIO registers */
101 #define IVTV_REG_GPIO_IN 0x9008
102 #define IVTV_REG_GPIO_OUT 0x900c
103 #define IVTV_REG_GPIO_DIR 0x9020
104
ivtv_reset_ir_gpio(struct ivtv * itv)105 void ivtv_reset_ir_gpio(struct ivtv *itv)
106 {
107 int curdir, curout;
108
109 if (itv->card->type != IVTV_CARD_PVR_150)
110 return;
111 IVTV_DEBUG_INFO("Resetting PVR150 IR\n");
112 curout = read_reg(IVTV_REG_GPIO_OUT);
113 curdir = read_reg(IVTV_REG_GPIO_DIR);
114 curdir |= 0x80;
115 write_reg(curdir, IVTV_REG_GPIO_DIR);
116 curout = (curout & ~0xF) | 1;
117 write_reg(curout, IVTV_REG_GPIO_OUT);
118 /* We could use something else for smaller time */
119 schedule_timeout_interruptible(msecs_to_jiffies(1));
120 curout |= 2;
121 write_reg(curout, IVTV_REG_GPIO_OUT);
122 curdir &= ~0x80;
123 write_reg(curdir, IVTV_REG_GPIO_DIR);
124 }
125
126 /* Xceive tuner reset function */
ivtv_reset_tuner_gpio(void * dev,int component,int cmd,int value)127 int ivtv_reset_tuner_gpio(void *dev, int component, int cmd, int value)
128 {
129 struct i2c_algo_bit_data *algo = dev;
130 struct ivtv *itv = algo->data;
131 u32 curout;
132
133 if (cmd != XC2028_TUNER_RESET)
134 return 0;
135 IVTV_DEBUG_INFO("Resetting tuner\n");
136 curout = read_reg(IVTV_REG_GPIO_OUT);
137 curout &= ~(1 << itv->card->xceive_pin);
138 write_reg(curout, IVTV_REG_GPIO_OUT);
139 schedule_timeout_interruptible(msecs_to_jiffies(1));
140
141 curout |= 1 << itv->card->xceive_pin;
142 write_reg(curout, IVTV_REG_GPIO_OUT);
143 schedule_timeout_interruptible(msecs_to_jiffies(1));
144 return 0;
145 }
146
sd_to_ivtv(struct v4l2_subdev * sd)147 static inline struct ivtv *sd_to_ivtv(struct v4l2_subdev *sd)
148 {
149 return container_of(sd, struct ivtv, sd_gpio);
150 }
151
152 static struct v4l2_queryctrl gpio_ctrl_mute = {
153 .id = V4L2_CID_AUDIO_MUTE,
154 .type = V4L2_CTRL_TYPE_BOOLEAN,
155 .name = "Mute",
156 .minimum = 0,
157 .maximum = 1,
158 .step = 1,
159 .default_value = 1,
160 .flags = 0,
161 };
162
subdev_s_clock_freq(struct v4l2_subdev * sd,u32 freq)163 static int subdev_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
164 {
165 struct ivtv *itv = sd_to_ivtv(sd);
166 u16 mask, data;
167
168 mask = itv->card->gpio_audio_freq.mask;
169 switch (freq) {
170 case 32000:
171 data = itv->card->gpio_audio_freq.f32000;
172 break;
173 case 44100:
174 data = itv->card->gpio_audio_freq.f44100;
175 break;
176 case 48000:
177 default:
178 data = itv->card->gpio_audio_freq.f48000;
179 break;
180 }
181 if (mask)
182 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
183 return 0;
184 }
185
subdev_g_tuner(struct v4l2_subdev * sd,struct v4l2_tuner * vt)186 static int subdev_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
187 {
188 struct ivtv *itv = sd_to_ivtv(sd);
189 u16 mask;
190
191 mask = itv->card->gpio_audio_detect.mask;
192 if (mask == 0 || (read_reg(IVTV_REG_GPIO_IN) & mask))
193 vt->rxsubchans = V4L2_TUNER_MODE_STEREO |
194 V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
195 else
196 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
197 return 0;
198 }
199
subdev_s_tuner(struct v4l2_subdev * sd,struct v4l2_tuner * vt)200 static int subdev_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
201 {
202 struct ivtv *itv = sd_to_ivtv(sd);
203 u16 mask, data;
204
205 mask = itv->card->gpio_audio_mode.mask;
206 switch (vt->audmode) {
207 case V4L2_TUNER_MODE_LANG1:
208 data = itv->card->gpio_audio_mode.lang1;
209 break;
210 case V4L2_TUNER_MODE_LANG2:
211 data = itv->card->gpio_audio_mode.lang2;
212 break;
213 case V4L2_TUNER_MODE_MONO:
214 data = itv->card->gpio_audio_mode.mono;
215 break;
216 case V4L2_TUNER_MODE_STEREO:
217 case V4L2_TUNER_MODE_LANG1_LANG2:
218 default:
219 data = itv->card->gpio_audio_mode.stereo;
220 break;
221 }
222 if (mask)
223 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
224 return 0;
225 }
226
subdev_s_radio(struct v4l2_subdev * sd)227 static int subdev_s_radio(struct v4l2_subdev *sd)
228 {
229 struct ivtv *itv = sd_to_ivtv(sd);
230 u16 mask, data;
231
232 mask = itv->card->gpio_audio_input.mask;
233 data = itv->card->gpio_audio_input.radio;
234 if (mask)
235 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
236 return 0;
237 }
238
subdev_s_std(struct v4l2_subdev * sd,v4l2_std_id std)239 static int subdev_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
240 {
241 struct ivtv *itv = sd_to_ivtv(sd);
242 u16 mask, data;
243
244 mask = itv->card->gpio_audio_input.mask;
245 data = itv->card->gpio_audio_input.tuner;
246 if (mask)
247 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
248 return 0;
249 }
250
subdev_s_audio_routing(struct v4l2_subdev * sd,const struct v4l2_routing * route)251 static int subdev_s_audio_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
252 {
253 struct ivtv *itv = sd_to_ivtv(sd);
254 u16 mask, data;
255
256 if (route->input > 2)
257 return -EINVAL;
258 mask = itv->card->gpio_audio_input.mask;
259 switch (route->input) {
260 case 0:
261 data = itv->card->gpio_audio_input.tuner;
262 break;
263 case 1:
264 data = itv->card->gpio_audio_input.linein;
265 break;
266 case 2:
267 default:
268 data = itv->card->gpio_audio_input.radio;
269 break;
270 }
271 if (mask)
272 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
273 return 0;
274 }
275
subdev_g_ctrl(struct v4l2_subdev * sd,struct v4l2_control * ctrl)276 static int subdev_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
277 {
278 struct ivtv *itv = sd_to_ivtv(sd);
279 u16 mask, data;
280
281 if (ctrl->id != V4L2_CID_AUDIO_MUTE)
282 return -EINVAL;
283 mask = itv->card->gpio_audio_mute.mask;
284 data = itv->card->gpio_audio_mute.mute;
285 ctrl->value = (read_reg(IVTV_REG_GPIO_OUT) & mask) == data;
286 return 0;
287 }
288
subdev_s_ctrl(struct v4l2_subdev * sd,struct v4l2_control * ctrl)289 static int subdev_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
290 {
291 struct ivtv *itv = sd_to_ivtv(sd);
292 u16 mask, data;
293
294 if (ctrl->id != V4L2_CID_AUDIO_MUTE)
295 return -EINVAL;
296 mask = itv->card->gpio_audio_mute.mask;
297 data = ctrl->value ? itv->card->gpio_audio_mute.mute : 0;
298 if (mask)
299 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
300 return 0;
301 }
302
subdev_queryctrl(struct v4l2_subdev * sd,struct v4l2_queryctrl * qc)303 static int subdev_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
304 {
305 if (qc->id != V4L2_CID_AUDIO_MUTE)
306 return -EINVAL;
307 *qc = gpio_ctrl_mute;
308 return 0;
309 }
310
subdev_log_status(struct v4l2_subdev * sd)311 static int subdev_log_status(struct v4l2_subdev *sd)
312 {
313 struct ivtv *itv = sd_to_ivtv(sd);
314
315 IVTV_INFO("GPIO status: DIR=0x%04x OUT=0x%04x IN=0x%04x\n",
316 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT),
317 read_reg(IVTV_REG_GPIO_IN));
318 return 0;
319 }
320
subdev_s_video_routing(struct v4l2_subdev * sd,const struct v4l2_routing * route)321 static int subdev_s_video_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
322 {
323 struct ivtv *itv = sd_to_ivtv(sd);
324 u16 mask, data;
325
326 if (route->input > 2) /* 0:Tuner 1:Composite 2:S-Video */
327 return -EINVAL;
328 mask = itv->card->gpio_video_input.mask;
329 if (route->input == 0)
330 data = itv->card->gpio_video_input.tuner;
331 else if (route->input == 1)
332 data = itv->card->gpio_video_input.composite;
333 else
334 data = itv->card->gpio_video_input.svideo;
335 if (mask)
336 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
337 return 0;
338 }
339
340 static const struct v4l2_subdev_core_ops subdev_core_ops = {
341 .log_status = subdev_log_status,
342 .g_ctrl = subdev_g_ctrl,
343 .s_ctrl = subdev_s_ctrl,
344 .queryctrl = subdev_queryctrl,
345 };
346
347 static const struct v4l2_subdev_tuner_ops subdev_tuner_ops = {
348 .s_std = subdev_s_std,
349 .s_radio = subdev_s_radio,
350 .g_tuner = subdev_g_tuner,
351 .s_tuner = subdev_s_tuner,
352 };
353
354 static const struct v4l2_subdev_audio_ops subdev_audio_ops = {
355 .s_clock_freq = subdev_s_clock_freq,
356 .s_routing = subdev_s_audio_routing,
357 };
358
359 static const struct v4l2_subdev_video_ops subdev_video_ops = {
360 .s_routing = subdev_s_video_routing,
361 };
362
363 static const struct v4l2_subdev_ops subdev_ops = {
364 .core = &subdev_core_ops,
365 .tuner = &subdev_tuner_ops,
366 .audio = &subdev_audio_ops,
367 .video = &subdev_video_ops,
368 };
369
ivtv_gpio_init(struct ivtv * itv)370 int ivtv_gpio_init(struct ivtv *itv)
371 {
372 u16 pin = 0;
373
374 if (itv->card->xceive_pin)
375 pin = 1 << itv->card->xceive_pin;
376
377 if ((itv->card->gpio_init.direction | pin) == 0)
378 return 0;
379
380 IVTV_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n",
381 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT));
382
383 /* init output data then direction */
384 write_reg(itv->card->gpio_init.initial_value | pin, IVTV_REG_GPIO_OUT);
385 write_reg(itv->card->gpio_init.direction | pin, IVTV_REG_GPIO_DIR);
386 v4l2_subdev_init(&itv->sd_gpio, &subdev_ops);
387 snprintf(itv->sd_gpio.name, sizeof(itv->sd_gpio.name), "%s-gpio", itv->device.name);
388 itv->sd_gpio.grp_id = IVTV_HW_GPIO;
389 return v4l2_device_register_subdev(&itv->device, &itv->sd_gpio);
390 }
391