1 // SPDX-License-Identifier: GPL-2.0-or-later
4 Merging GPIO support into driver:
5 Copyright (C) 2004 Chris Kennedy <c@groovy.org>
6 Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
10 #include "ivtv-driver.h"
11 #include "ivtv-cards.h"
12 #include "ivtv-gpio.h"
13 #include "tuner-xc2028.h"
14 #include <media/tuner.h>
15 #include <media/v4l2-ctrls.h>
18 * GPIO assignment of Yuan MPG600/MPG160
20 * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
21 * OUTPUT IN1 IN0 AM3 AM2 AM1 AM0
24 * IN* : Input selection
32 * AM3 0: Normal 1: Mixed(Sub+Main channel)
33 * AM2 0: Subchannel 1: Main channel
34 * AM1 0: Stereo 1: Mono
35 * AM0 0: Normal 1: Mute
37 * DM* : Detected tuner audio Mode
38 * DM1 0: Stereo 1: Mono
39 * DM0 0: Multiplex 1: Normal
41 * GPIO Initial Settings
44 * OUTPUT 0x000C 0x400C
46 * Special thanks to Makoto Iguchi <iguchi@tahoo.org> and Mr. Anonymous
47 * for analyzing GPIO of MPG160.
49 *****************************************************************************
51 * GPIO assignment of Avermedia M179 (per information direct from AVerMedia)
53 * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
54 * OUTPUT IN0 AM0 IN1 AM1 AM2 IN2 BR0 BR1
57 * IN* : Input selection
61 * 1 0 0 TV Tuner Audio
67 * 0 0 0 TV Tuner Audio: L_OUT=(L+R)/2, R_OUT=SAP
68 * 0 0 1 TV Tuner Audio: L_OUT=R_OUT=SAP (SAP)
69 * 0 1 0 TV Tuner Audio: L_OUT=L, R_OUT=R (stereo)
70 * 0 1 1 TV Tuner Audio: mute
71 * 1 * * TV Tuner Audio: L_OUT=R_OUT=(L+R)/2 (mono)
73 * BR* : Audio Sample Rate (BR stands for bitrate for some reason)
79 * DM* : Detected tuner audio Mode
82 * Special thanks to AVerMedia Technologies, Inc. and Jiun-Kuei Jung at
83 * AVerMedia for providing the GPIO information used to add support
87 /********************* GPIO stuffs *********************/
90 #define IVTV_REG_GPIO_IN 0x9008
91 #define IVTV_REG_GPIO_OUT 0x900c
92 #define IVTV_REG_GPIO_DIR 0x9020
94 void ivtv_reset_ir_gpio(struct ivtv *itv)
98 if (itv->card->type != IVTV_CARD_PVR_150)
100 IVTV_DEBUG_INFO("Resetting PVR150 IR\n");
101 curout = read_reg(IVTV_REG_GPIO_OUT);
102 curdir = read_reg(IVTV_REG_GPIO_DIR);
104 write_reg(curdir, IVTV_REG_GPIO_DIR);
105 curout = (curout & ~0xF) | 1;
106 write_reg(curout, IVTV_REG_GPIO_OUT);
107 /* We could use something else for smaller time */
108 schedule_timeout_interruptible(msecs_to_jiffies(1));
110 write_reg(curout, IVTV_REG_GPIO_OUT);
112 write_reg(curdir, IVTV_REG_GPIO_DIR);
115 /* Xceive tuner reset function */
116 int ivtv_reset_tuner_gpio(void *dev, int component, int cmd, int value)
118 struct i2c_algo_bit_data *algo = dev;
119 struct ivtv *itv = algo->data;
122 if (cmd != XC2028_TUNER_RESET)
124 IVTV_DEBUG_INFO("Resetting tuner\n");
125 curout = read_reg(IVTV_REG_GPIO_OUT);
126 curout &= ~(1 << itv->card->xceive_pin);
127 write_reg(curout, IVTV_REG_GPIO_OUT);
128 schedule_timeout_interruptible(msecs_to_jiffies(1));
130 curout |= 1 << itv->card->xceive_pin;
131 write_reg(curout, IVTV_REG_GPIO_OUT);
132 schedule_timeout_interruptible(msecs_to_jiffies(1));
136 static inline struct ivtv *sd_to_ivtv(struct v4l2_subdev *sd)
138 return container_of(sd, struct ivtv, sd_gpio);
141 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
143 return &container_of(ctrl->handler, struct ivtv, hdl_gpio)->sd_gpio;
146 static int subdev_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
148 struct ivtv *itv = sd_to_ivtv(sd);
151 mask = itv->card->gpio_audio_freq.mask;
154 data = itv->card->gpio_audio_freq.f32000;
157 data = itv->card->gpio_audio_freq.f44100;
161 data = itv->card->gpio_audio_freq.f48000;
165 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
169 static int subdev_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
171 struct ivtv *itv = sd_to_ivtv(sd);
174 mask = itv->card->gpio_audio_detect.mask;
175 if (mask == 0 || (read_reg(IVTV_REG_GPIO_IN) & mask))
176 vt->rxsubchans = V4L2_TUNER_SUB_STEREO |
177 V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
179 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
183 static int subdev_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
185 struct ivtv *itv = sd_to_ivtv(sd);
188 mask = itv->card->gpio_audio_mode.mask;
189 switch (vt->audmode) {
190 case V4L2_TUNER_MODE_LANG1:
191 data = itv->card->gpio_audio_mode.lang1;
193 case V4L2_TUNER_MODE_LANG2:
194 data = itv->card->gpio_audio_mode.lang2;
196 case V4L2_TUNER_MODE_MONO:
197 data = itv->card->gpio_audio_mode.mono;
199 case V4L2_TUNER_MODE_STEREO:
200 case V4L2_TUNER_MODE_LANG1_LANG2:
202 data = itv->card->gpio_audio_mode.stereo;
206 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
210 static int subdev_s_radio(struct v4l2_subdev *sd)
212 struct ivtv *itv = sd_to_ivtv(sd);
215 mask = itv->card->gpio_audio_input.mask;
216 data = itv->card->gpio_audio_input.radio;
218 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
222 static int subdev_s_audio_routing(struct v4l2_subdev *sd,
223 u32 input, u32 output, u32 config)
225 struct ivtv *itv = sd_to_ivtv(sd);
230 mask = itv->card->gpio_audio_input.mask;
233 data = itv->card->gpio_audio_input.tuner;
236 data = itv->card->gpio_audio_input.linein;
240 data = itv->card->gpio_audio_input.radio;
244 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
248 static int subdev_s_ctrl(struct v4l2_ctrl *ctrl)
250 struct v4l2_subdev *sd = to_sd(ctrl);
251 struct ivtv *itv = sd_to_ivtv(sd);
255 case V4L2_CID_AUDIO_MUTE:
256 mask = itv->card->gpio_audio_mute.mask;
257 data = ctrl->val ? itv->card->gpio_audio_mute.mute : 0;
259 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) |
260 (data & mask), IVTV_REG_GPIO_OUT);
267 static int subdev_log_status(struct v4l2_subdev *sd)
269 struct ivtv *itv = sd_to_ivtv(sd);
271 IVTV_INFO("GPIO status: DIR=0x%04x OUT=0x%04x IN=0x%04x\n",
272 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT),
273 read_reg(IVTV_REG_GPIO_IN));
274 v4l2_ctrl_handler_log_status(&itv->hdl_gpio, sd->name);
278 static int subdev_s_video_routing(struct v4l2_subdev *sd,
279 u32 input, u32 output, u32 config)
281 struct ivtv *itv = sd_to_ivtv(sd);
284 if (input > 2) /* 0:Tuner 1:Composite 2:S-Video */
286 mask = itv->card->gpio_video_input.mask;
288 data = itv->card->gpio_video_input.tuner;
290 data = itv->card->gpio_video_input.composite;
292 data = itv->card->gpio_video_input.svideo;
294 write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
298 static const struct v4l2_ctrl_ops gpio_ctrl_ops = {
299 .s_ctrl = subdev_s_ctrl,
302 static const struct v4l2_subdev_core_ops subdev_core_ops = {
303 .log_status = subdev_log_status,
306 static const struct v4l2_subdev_tuner_ops subdev_tuner_ops = {
307 .s_radio = subdev_s_radio,
308 .g_tuner = subdev_g_tuner,
309 .s_tuner = subdev_s_tuner,
312 static const struct v4l2_subdev_audio_ops subdev_audio_ops = {
313 .s_clock_freq = subdev_s_clock_freq,
314 .s_routing = subdev_s_audio_routing,
317 static const struct v4l2_subdev_video_ops subdev_video_ops = {
318 .s_routing = subdev_s_video_routing,
321 static const struct v4l2_subdev_ops subdev_ops = {
322 .core = &subdev_core_ops,
323 .tuner = &subdev_tuner_ops,
324 .audio = &subdev_audio_ops,
325 .video = &subdev_video_ops,
328 int ivtv_gpio_init(struct ivtv *itv)
332 if (itv->card->xceive_pin)
333 pin = 1 << itv->card->xceive_pin;
335 if ((itv->card->gpio_init.direction | pin) == 0)
338 IVTV_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n",
339 read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT));
341 /* init output data then direction */
342 write_reg(itv->card->gpio_init.initial_value | pin, IVTV_REG_GPIO_OUT);
343 write_reg(itv->card->gpio_init.direction | pin, IVTV_REG_GPIO_DIR);
344 v4l2_subdev_init(&itv->sd_gpio, &subdev_ops);
345 snprintf(itv->sd_gpio.name, sizeof(itv->sd_gpio.name), "%s-gpio", itv->v4l2_dev.name);
346 itv->sd_gpio.grp_id = IVTV_HW_GPIO;
347 v4l2_ctrl_handler_init(&itv->hdl_gpio, 1);
348 v4l2_ctrl_new_std(&itv->hdl_gpio, &gpio_ctrl_ops,
349 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
350 if (itv->hdl_gpio.error)
351 return itv->hdl_gpio.error;
352 itv->sd_gpio.ctrl_handler = &itv->hdl_gpio;
353 v4l2_ctrl_handler_setup(&itv->hdl_gpio);
354 return v4l2_device_register_subdev(&itv->v4l2_dev, &itv->sd_gpio);