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mei: fix KDoc documentation formatting
[linux/fpc-iii.git] / drivers / media / pci / ivtv / ivtv-gpio.c
blobaf52def700cc25ec80c1b9c9726e4c655575af53
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 #include <media/v4l2-ctrls.h>
28
29 /*
30 * GPIO assignment of Yuan MPG600/MPG160
31 *
32 * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
33 * OUTPUT IN1 IN0 AM3 AM2 AM1 AM0
34 * INPUT DM1 DM0
35 *
36 * IN* : Input selection
37 * IN1 IN0
38 * 1 1 N/A
39 * 1 0 Line
40 * 0 1 N/A
41 * 0 0 Tuner
42 *
43 * AM* : Audio Mode
44 * AM3 0: Normal 1: Mixed(Sub+Main channel)
45 * AM2 0: Subchannel 1: Main channel
46 * AM1 0: Stereo 1: Mono
47 * AM0 0: Normal 1: Mute
48 *
49 * DM* : Detected tuner audio Mode
50 * DM1 0: Stereo 1: Mono
51 * DM0 0: Multiplex 1: Normal
52 *
53 * GPIO Initial Settings
54 * MPG600 MPG160
55 * DIR 0x3080 0x7080
56 * OUTPUT 0x000C 0x400C
57 *
58 * Special thanks to Makoto Iguchi <iguchi@tahoo.org> and Mr. Anonymous
59 * for analyzing GPIO of MPG160.
60 *
61 *****************************************************************************
62 *
63 * GPIO assignment of Avermedia M179 (per information direct from AVerMedia)
64 *
65 * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
66 * OUTPUT IN0 AM0 IN1 AM1 AM2 IN2 BR0 BR1
67 * INPUT
68 *
69 * IN* : Input selection
70 * IN0 IN1 IN2
71 * * 1 * Mute
72 * 0 0 0 Line-In
73 * 1 0 0 TV Tuner Audio
74 * 0 0 1 FM Audio
75 * 1 0 1 Mute
76 *
77 * AM* : Audio Mode
78 * AM0 AM1 AM2
79 * 0 0 0 TV Tuner Audio: L_OUT=(L+R)/2, R_OUT=SAP
80 * 0 0 1 TV Tuner Audio: L_OUT=R_OUT=SAP (SAP)
81 * 0 1 0 TV Tuner Audio: L_OUT=L, R_OUT=R (stereo)
82 * 0 1 1 TV Tuner Audio: mute
83 * 1 * * TV Tuner Audio: L_OUT=R_OUT=(L+R)/2 (mono)
84 *
85 * BR* : Audio Sample Rate (BR stands for bitrate for some reason)
86 * BR0 BR1
87 * 0 0 32 kHz
88 * 0 1 44.1 kHz
89 * 1 0 48 kHz
90 *
91 * DM* : Detected tuner audio Mode
92 * Unknown currently
93 *
94 * Special thanks to AVerMedia Technologies, Inc. and Jiun-Kuei Jung at
95 * AVerMedia for providing the GPIO information used to add support
96 * for the M179 cards.
97 */
98
99 /********************* GPIO stuffs *********************/
100
101 /* GPIO registers */
102 #define IVTV_REG_GPIO_IN 0x9008
103 #define IVTV_REG_GPIO_OUT 0x900c
104 #define IVTV_REG_GPIO_DIR 0x9020
105
106 void ivtv_reset_ir_gpio(struct ivtv *itv)
107 {
108 int curdir, curout;
109
110 if (itv->card->type != IVTV_CARD_PVR_150)
111 return;
112 IVTV_DEBUG_INFO("Resetting PVR150 IR\n");
113 curout = read_reg(IVTV_REG_GPIO_OUT);
114 curdir = read_reg(IVTV_REG_GPIO_DIR);
115 curdir |= 0x80;
116 write_reg(curdir, IVTV_REG_GPIO_DIR);
117 curout = (curout & ~0xF) | 1;
118 write_reg(curout, IVTV_REG_GPIO_OUT);
119 /* We could use something else for smaller time */
120 schedule_timeout_interruptible(msecs_to_jiffies(1));
121 curout |= 2;
122 write_reg(curout, IVTV_REG_GPIO_OUT);
123 curdir &= ~0x80;
124 write_reg(curdir, IVTV_REG_GPIO_DIR);
125 }
126
127 /* Xceive tuner reset function */
128 int ivtv_reset_tuner_gpio(void *dev, int component, int cmd, int value)
129 {
130 struct i2c_algo_bit_data *algo = dev;
131 struct ivtv *itv = algo->data;
132 u32 curout;
133
134 if (cmd != XC2028_TUNER_RESET)
135 return 0;
136 IVTV_DEBUG_INFO("Resetting tuner\n");
137 curout = read_reg(IVTV_REG_GPIO_OUT);
138 curout &= ~(1 << itv->card->xceive_pin);
139 write_reg(curout, IVTV_REG_GPIO_OUT);
140 schedule_timeout_interruptible(msecs_to_jiffies(1));
141
142 curout |= 1 << itv->card->xceive_pin;
143 write_reg(curout, IVTV_REG_GPIO_OUT);
144 schedule_timeout_interruptible(msecs_to_jiffies(1));
145 return 0;
146 }
147
148 static inline struct ivtv *sd_to_ivtv(struct v4l2_subdev *sd)
149 {
150 return container_of(sd, struct ivtv, sd_gpio);
151 }
152
153 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
154 {
155 return &container_of(ctrl->handler, struct ivtv, hdl_gpio)->sd_gpio;
156 }
157
158 static int subdev_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
159 {
160 struct ivtv *itv = sd_to_ivtv(sd);
161 u16 mask, data;
162
163 mask = itv->card->gpio_audio_freq.mask;
164 switch (freq) {
165 case 32000:
166 data = itv->card->gpio_audio_freq.f32000;
167 break;
168 case 44100:
169 data = itv->card->gpio_audio_freq.f44100;
170 break;
171 case 48000:
172 default:
173 data = itv->card->gpio_audio_freq.f48000;
174 break;
175 }
176 if (mask)
177 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
178 return 0;
179 }
180
181 static int subdev_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
182 {
183 struct ivtv *itv = sd_to_ivtv(sd);
184 u16 mask;
185
186 mask = itv->card->gpio_audio_detect.mask;
187 if (mask == 0 || (read_reg(IVTV_REG_GPIO_IN) & mask))
188 vt->rxsubchans = V4L2_TUNER_SUB_STEREO |
189 V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
190 else
191 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
192 return 0;
193 }
194
195 static int subdev_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
196 {
197 struct ivtv *itv = sd_to_ivtv(sd);
198 u16 mask, data;
199
200 mask = itv->card->gpio_audio_mode.mask;
201 switch (vt->audmode) {
202 case V4L2_TUNER_MODE_LANG1:
203 data = itv->card->gpio_audio_mode.lang1;
204 break;
205 case V4L2_TUNER_MODE_LANG2:
206 data = itv->card->gpio_audio_mode.lang2;
207 break;
208 case V4L2_TUNER_MODE_MONO:
209 data = itv->card->gpio_audio_mode.mono;
210 break;
211 case V4L2_TUNER_MODE_STEREO:
212 case V4L2_TUNER_MODE_LANG1_LANG2:
213 default:
214 data = itv->card->gpio_audio_mode.stereo;
215 break;
216 }
217 if (mask)
218 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
219 return 0;
220 }
221
222 static int subdev_s_radio(struct v4l2_subdev *sd)
223 {
224 struct ivtv *itv = sd_to_ivtv(sd);
225 u16 mask, data;
226
227 mask = itv->card->gpio_audio_input.mask;
228 data = itv->card->gpio_audio_input.radio;
229 if (mask)
230 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
231 return 0;
232 }
233
234 static int subdev_s_audio_routing(struct v4l2_subdev *sd,
235 u32 input, u32 output, u32 config)
236 {
237 struct ivtv *itv = sd_to_ivtv(sd);
238 u16 mask, data;
239
240 if (input > 2)
241 return -EINVAL;
242 mask = itv->card->gpio_audio_input.mask;
243 switch (input) {
244 case 0:
245 data = itv->card->gpio_audio_input.tuner;
246 break;
247 case 1:
248 data = itv->card->gpio_audio_input.linein;
249 break;
250 case 2:
251 default:
252 data = itv->card->gpio_audio_input.radio;
253 break;
254 }
255 if (mask)
256 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
257 return 0;
258 }
259
260 static int subdev_s_ctrl(struct v4l2_ctrl *ctrl)
261 {
262 struct v4l2_subdev *sd = to_sd(ctrl);
263 struct ivtv *itv = sd_to_ivtv(sd);
264 u16 mask, data;
265
266 switch (ctrl->id) {
267 case V4L2_CID_AUDIO_MUTE:
268 mask = itv->card->gpio_audio_mute.mask;
269 data = ctrl->val ? itv->card->gpio_audio_mute.mute : 0;
270 if (mask)
271 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) |
272 (data & mask), IVTV_REG_GPIO_OUT);
273 return 0;
274 }
275 return -EINVAL;
276 }
277
278
279 static int subdev_log_status(struct v4l2_subdev *sd)
280 {
281 struct ivtv *itv = sd_to_ivtv(sd);
282
283 IVTV_INFO("GPIO status: DIR=0x%04x OUT=0x%04x IN=0x%04x\n",
284 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT),
285 read_reg(IVTV_REG_GPIO_IN));
286 v4l2_ctrl_handler_log_status(&itv->hdl_gpio, sd->name);
287 return 0;
288 }
289
290 static int subdev_s_video_routing(struct v4l2_subdev *sd,
291 u32 input, u32 output, u32 config)
292 {
293 struct ivtv *itv = sd_to_ivtv(sd);
294 u16 mask, data;
295
296 if (input > 2) /* 0:Tuner 1:Composite 2:S-Video */
297 return -EINVAL;
298 mask = itv->card->gpio_video_input.mask;
299 if (input == 0)
300 data = itv->card->gpio_video_input.tuner;
301 else if (input == 1)
302 data = itv->card->gpio_video_input.composite;
303 else
304 data = itv->card->gpio_video_input.svideo;
305 if (mask)
306 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
307 return 0;
308 }
309
310 static const struct v4l2_ctrl_ops gpio_ctrl_ops = {
311 .s_ctrl = subdev_s_ctrl,
312 };
313
314 static const struct v4l2_subdev_core_ops subdev_core_ops = {
315 .log_status = subdev_log_status,
316 .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
317 .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
318 .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
319 .g_ctrl = v4l2_subdev_g_ctrl,
320 .s_ctrl = v4l2_subdev_s_ctrl,
321 .queryctrl = v4l2_subdev_queryctrl,
322 .querymenu = v4l2_subdev_querymenu,
323 };
324
325 static const struct v4l2_subdev_tuner_ops subdev_tuner_ops = {
326 .s_radio = subdev_s_radio,
327 .g_tuner = subdev_g_tuner,
328 .s_tuner = subdev_s_tuner,
329 };
330
331 static const struct v4l2_subdev_audio_ops subdev_audio_ops = {
332 .s_clock_freq = subdev_s_clock_freq,
333 .s_routing = subdev_s_audio_routing,
334 };
335
336 static const struct v4l2_subdev_video_ops subdev_video_ops = {
337 .s_routing = subdev_s_video_routing,
338 };
339
340 static const struct v4l2_subdev_ops subdev_ops = {
341 .core = &subdev_core_ops,
342 .tuner = &subdev_tuner_ops,
343 .audio = &subdev_audio_ops,
344 .video = &subdev_video_ops,
345 };
346
347 int ivtv_gpio_init(struct ivtv *itv)
348 {
349 u16 pin = 0;
350
351 if (itv->card->xceive_pin)
352 pin = 1 << itv->card->xceive_pin;
353
354 if ((itv->card->gpio_init.direction | pin) == 0)
355 return 0;
356
357 IVTV_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n",
358 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT));
359
360 /* init output data then direction */
361 write_reg(itv->card->gpio_init.initial_value | pin, IVTV_REG_GPIO_OUT);
362 write_reg(itv->card->gpio_init.direction | pin, IVTV_REG_GPIO_DIR);
363 v4l2_subdev_init(&itv->sd_gpio, &subdev_ops);
364 snprintf(itv->sd_gpio.name, sizeof(itv->sd_gpio.name), "%s-gpio", itv->v4l2_dev.name);
365 itv->sd_gpio.grp_id = IVTV_HW_GPIO;
366 v4l2_ctrl_handler_init(&itv->hdl_gpio, 1);
367 v4l2_ctrl_new_std(&itv->hdl_gpio, &gpio_ctrl_ops,
368 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
369 if (itv->hdl_gpio.error)
370 return itv->hdl_gpio.error;
371 itv->sd_gpio.ctrl_handler = &itv->hdl_gpio;
372 v4l2_ctrl_handler_setup(&itv->hdl_gpio);
373 return v4l2_device_register_subdev(&itv->v4l2_dev, &itv->sd_gpio);
374 }
Linux with added FPC-III support