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>
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.
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.
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
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>
29 * GPIO assignment of Yuan MPG600/MPG160
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
35 * IN* : Input selection
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
48 * DM* : Detected tuner audio Mode
49 * DM1 0: Stereo 1: Mono
50 * DM0 0: Multiplex 1: Normal
52 * GPIO Initial Settings
55 * OUTPUT 0x000C 0x400C
57 * Special thanks to Makoto Iguchi <iguchi@tahoo.org> and Mr. Anonymous
58 * for analyzing GPIO of MPG160.
60 *****************************************************************************
62 * GPIO assignment of Avermedia M179 (per information direct from AVerMedia)
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
68 * IN* : Input selection
72 * 1 0 0 TV Tuner Audio
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)
84 * BR* : Audio Sample Rate (BR stands for bitrate for some reason)
90 * DM* : Detected tuner audio Mode
93 * Special thanks to AVerMedia Technologies, Inc. and Jiun-Kuei Jung at
94 * AVerMedia for providing the GPIO information used to add support
98 /********************* GPIO stuffs *********************/
101 #define IVTV_REG_GPIO_IN 0x9008
102 #define IVTV_REG_GPIO_OUT 0x900c
103 #define IVTV_REG_GPIO_DIR 0x9020
105 void ivtv_reset_ir_gpio(struct ivtv *itv)
109 if (itv->card->type != IVTV_CARD_PVR_150)
111 IVTV_DEBUG_INFO("Resetting PVR150 IR\n");
112 curout = read_reg(IVTV_REG_GPIO_OUT);
113 curdir = read_reg(IVTV_REG_GPIO_DIR);
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));
121 write_reg(curout, IVTV_REG_GPIO_OUT);
123 write_reg(curdir, IVTV_REG_GPIO_DIR);
126 /* Xceive tuner reset function */
127 int ivtv_reset_tuner_gpio(void *dev, int component, int cmd, int value)
129 struct i2c_algo_bit_data *algo = dev;
130 struct ivtv *itv = algo->data;
133 if (cmd != XC2028_TUNER_RESET)
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));
141 curout |= 1 << itv->card->xceive_pin;
142 write_reg(curout, IVTV_REG_GPIO_OUT);
143 schedule_timeout_interruptible(msecs_to_jiffies(1));
147 static inline struct ivtv *sd_to_ivtv(struct v4l2_subdev *sd)
149 return container_of(sd, struct ivtv, sd_gpio);
152 static struct v4l2_queryctrl gpio_ctrl_mute = {
153 .id = V4L2_CID_AUDIO_MUTE,
154 .type = V4L2_CTRL_TYPE_BOOLEAN,
163 static int subdev_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
165 struct ivtv *itv = sd_to_ivtv(sd);
168 mask = itv->card->gpio_audio_freq.mask;
171 data = itv->card->gpio_audio_freq.f32000;
174 data = itv->card->gpio_audio_freq.f44100;
178 data = itv->card->gpio_audio_freq.f48000;
182 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
186 static int subdev_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
188 struct ivtv *itv = sd_to_ivtv(sd);
191 mask = itv->card->gpio_audio_detect.mask;
192 if (mask == 0 || (read_reg(IVTV_REG_GPIO_IN) & mask))
193 vt->rxsubchans = V4L2_TUNER_SUB_STEREO |
194 V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
196 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
200 static int subdev_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
202 struct ivtv *itv = sd_to_ivtv(sd);
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;
210 case V4L2_TUNER_MODE_LANG2:
211 data = itv->card->gpio_audio_mode.lang2;
213 case V4L2_TUNER_MODE_MONO:
214 data = itv->card->gpio_audio_mode.mono;
216 case V4L2_TUNER_MODE_STEREO:
217 case V4L2_TUNER_MODE_LANG1_LANG2:
219 data = itv->card->gpio_audio_mode.stereo;
223 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
227 static int subdev_s_radio(struct v4l2_subdev *sd)
229 struct ivtv *itv = sd_to_ivtv(sd);
232 mask = itv->card->gpio_audio_input.mask;
233 data = itv->card->gpio_audio_input.radio;
235 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
239 static int subdev_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
241 struct ivtv *itv = sd_to_ivtv(sd);
244 mask = itv->card->gpio_audio_input.mask;
245 data = itv->card->gpio_audio_input.tuner;
247 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
251 static int subdev_s_audio_routing(struct v4l2_subdev *sd,
252 u32 input, u32 output, u32 config)
254 struct ivtv *itv = sd_to_ivtv(sd);
259 mask = itv->card->gpio_audio_input.mask;
262 data = itv->card->gpio_audio_input.tuner;
265 data = itv->card->gpio_audio_input.linein;
269 data = itv->card->gpio_audio_input.radio;
273 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
277 static int subdev_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
279 struct ivtv *itv = sd_to_ivtv(sd);
282 if (ctrl->id != V4L2_CID_AUDIO_MUTE)
284 mask = itv->card->gpio_audio_mute.mask;
285 data = itv->card->gpio_audio_mute.mute;
286 ctrl->value = (read_reg(IVTV_REG_GPIO_OUT) & mask) == data;
290 static int subdev_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
292 struct ivtv *itv = sd_to_ivtv(sd);
295 if (ctrl->id != V4L2_CID_AUDIO_MUTE)
297 mask = itv->card->gpio_audio_mute.mask;
298 data = ctrl->value ? itv->card->gpio_audio_mute.mute : 0;
300 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
304 static int subdev_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
306 if (qc->id != V4L2_CID_AUDIO_MUTE)
308 *qc = gpio_ctrl_mute;
312 static int subdev_log_status(struct v4l2_subdev *sd)
314 struct ivtv *itv = sd_to_ivtv(sd);
316 IVTV_INFO("GPIO status: DIR=0x%04x OUT=0x%04x IN=0x%04x\n",
317 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT),
318 read_reg(IVTV_REG_GPIO_IN));
322 static int subdev_s_video_routing(struct v4l2_subdev *sd,
323 u32 input, u32 output, u32 config)
325 struct ivtv *itv = sd_to_ivtv(sd);
328 if (input > 2) /* 0:Tuner 1:Composite 2:S-Video */
330 mask = itv->card->gpio_video_input.mask;
332 data = itv->card->gpio_video_input.tuner;
334 data = itv->card->gpio_video_input.composite;
336 data = itv->card->gpio_video_input.svideo;
338 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
342 static const struct v4l2_subdev_core_ops subdev_core_ops = {
343 .log_status = subdev_log_status,
344 .g_ctrl = subdev_g_ctrl,
345 .s_ctrl = subdev_s_ctrl,
346 .queryctrl = subdev_queryctrl,
347 .s_std = subdev_s_std,
350 static const struct v4l2_subdev_tuner_ops subdev_tuner_ops = {
351 .s_radio = subdev_s_radio,
352 .g_tuner = subdev_g_tuner,
353 .s_tuner = subdev_s_tuner,
356 static const struct v4l2_subdev_audio_ops subdev_audio_ops = {
357 .s_clock_freq = subdev_s_clock_freq,
358 .s_routing = subdev_s_audio_routing,
361 static const struct v4l2_subdev_video_ops subdev_video_ops = {
362 .s_routing = subdev_s_video_routing,
365 static const struct v4l2_subdev_ops subdev_ops = {
366 .core = &subdev_core_ops,
367 .tuner = &subdev_tuner_ops,
368 .audio = &subdev_audio_ops,
369 .video = &subdev_video_ops,
372 int ivtv_gpio_init(struct ivtv *itv)
376 if (itv->card->xceive_pin)
377 pin = 1 << itv->card->xceive_pin;
379 if ((itv->card->gpio_init.direction | pin) == 0)
382 IVTV_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n",
383 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT));
385 /* init output data then direction */
386 write_reg(itv->card->gpio_init.initial_value | pin, IVTV_REG_GPIO_OUT);
387 write_reg(itv->card->gpio_init.direction | pin, IVTV_REG_GPIO_DIR);
388 v4l2_subdev_init(&itv->sd_gpio, &subdev_ops);
389 snprintf(itv->sd_gpio.name, sizeof(itv->sd_gpio.name), "%s-gpio", itv->v4l2_dev.name);
390 itv->sd_gpio.grp_id = IVTV_HW_GPIO;
391 return v4l2_device_register_subdev(&itv->v4l2_dev, &itv->sd_gpio);