// SPDX-License-Identifier: GPL-2.0-or-later /* gpio functions. Merging GPIO support into driver: Copyright (C) 2004 Chris Kennedy <c@groovy.org> Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl> */ #include "ivtv-driver.h" #include "ivtv-cards.h" #include "ivtv-gpio.h" #include "xc2028.h" #include <media/tuner.h> #include <media/v4l2-ctrls.h> /* * GPIO assignment of Yuan MPG600/MPG160 * * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0 * OUTPUT IN1 IN0 AM3 AM2 AM1 AM0 * INPUT DM1 DM0 * * IN* : Input selection * IN1 IN0 * 1 1 N/A * 1 0 Line * 0 1 N/A * 0 0 Tuner * * AM* : Audio Mode * AM3 0: Normal 1: Mixed(Sub+Main channel) * AM2 0: Subchannel 1: Main channel * AM1 0: Stereo 1: Mono * AM0 0: Normal 1: Mute * * DM* : Detected tuner audio Mode * DM1 0: Stereo 1: Mono * DM0 0: Multiplex 1: Normal * * GPIO Initial Settings * MPG600 MPG160 * DIR 0x3080 0x7080 * OUTPUT 0x000C 0x400C * * Special thanks to Makoto Iguchi <iguchi@tahoo.org> and Mr. Anonymous * for analyzing GPIO of MPG160. * ***************************************************************************** * * GPIO assignment of Avermedia M179 (per information direct from AVerMedia) * * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0 * OUTPUT IN0 AM0 IN1 AM1 AM2 IN2 BR0 BR1 * INPUT * * IN* : Input selection * IN0 IN1 IN2 * * 1 * Mute * 0 0 0 Line-In * 1 0 0 TV Tuner Audio * 0 0 1 FM Audio * 1 0 1 Mute * * AM* : Audio Mode * AM0 AM1 AM2 * 0 0 0 TV Tuner Audio: L_OUT=(L+R)/2, R_OUT=SAP * 0 0 1 TV Tuner Audio: L_OUT=R_OUT=SAP (SAP) * 0 1 0 TV Tuner Audio: L_OUT=L, R_OUT=R (stereo) * 0 1 1 TV Tuner Audio: mute * 1 * * TV Tuner Audio: L_OUT=R_OUT=(L+R)/2 (mono) * * BR* : Audio Sample Rate (BR stands for bitrate for some reason) * BR0 BR1 * 0 0 32 kHz * 0 1 44.1 kHz * 1 0 48 kHz * * DM* : Detected tuner audio Mode * Unknown currently * * Special thanks to AVerMedia Technologies, Inc. and Jiun-Kuei Jung at * AVerMedia for providing the GPIO information used to add support * for the M179 cards. */ /********************* GPIO stuffs *********************/ /* GPIO registers */ #define IVTV_REG_GPIO_IN 0x9008 #define IVTV_REG_GPIO_OUT 0x900c #define IVTV_REG_GPIO_DIR 0x9020 void ivtv_reset_ir_gpio(struct ivtv *itv) { int curdir, curout; if (itv->card->type != IVTV_CARD_PVR_150) return; IVTV_DEBUG_INFO("Resetting PVR150 IR\n"); curout = read_reg(IVTV_REG_GPIO_OUT); curdir = read_reg(IVTV_REG_GPIO_DIR); curdir |= 0x80; write_reg(curdir, IVTV_REG_GPIO_DIR); curout = (curout & ~0xF) | 1; write_reg(curout, IVTV_REG_GPIO_OUT); /* We could use something else for smaller time */ schedule_timeout_interruptible(msecs_to_jiffies(1)); curout |= 2; write_reg(curout, IVTV_REG_GPIO_OUT); curdir &= ~0x80; write_reg(curdir, IVTV_REG_GPIO_DIR); } /* Xceive tuner reset function */ int ivtv_reset_tuner_gpio(void *dev, int component, int cmd, int value) { struct i2c_algo_bit_data *algo = dev; struct ivtv *itv = algo->data; u32 curout; if (cmd != XC2028_TUNER_RESET) return 0; IVTV_DEBUG_INFO("Resetting tuner\n"); curout = read_reg(IVTV_REG_GPIO_OUT); curout &= ~(1 << itv->card->xceive_pin); write_reg(curout, IVTV_REG_GPIO_OUT); schedule_timeout_interruptible(msecs_to_jiffies(1)); curout |= 1 << itv->card->xceive_pin; write_reg(curout, IVTV_REG_GPIO_OUT); schedule_timeout_interruptible(msecs_to_jiffies(1)); return 0; } static inline struct ivtv *sd_to_ivtv(struct v4l2_subdev *sd) { return container_of(sd, struct ivtv, sd_gpio); } static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) { return &container_of(ctrl->handler, struct ivtv, hdl_gpio)->sd_gpio; } static int subdev_s_clock_freq(struct v4l2_subdev *sd, u32 freq) { struct ivtv *itv = sd_to_ivtv(sd); u16 mask, data; mask = itv->card->gpio_audio_freq.mask; switch (freq) { case 32000: data = itv->card->gpio_audio_freq.f32000; break; case 44100: data = itv->card->gpio_audio_freq.f44100; break; case 48000: default: data = itv->card->gpio_audio_freq.f48000; break; } if (mask) write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT); return 0; } static int subdev_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) { struct ivtv *itv = sd_to_ivtv(sd); u16 mask; mask = itv->card->gpio_audio_detect.mask; if (mask == 0 || (read_reg(IVTV_REG_GPIO_IN) & mask)) vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; else vt->rxsubchans = V4L2_TUNER_SUB_MONO; return 0; } static int subdev_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt) { struct ivtv *itv = sd_to_ivtv(sd); u16 mask, data; mask = itv->card->gpio_audio_mode.mask; switch (vt->audmode) { case V4L2_TUNER_MODE_LANG1: data = itv->card->gpio_audio_mode.lang1; break; case V4L2_TUNER_MODE_LANG2: data = itv->card->gpio_audio_mode.lang2; break; case V4L2_TUNER_MODE_MONO: data = itv->card->gpio_audio_mode.mono; break; case V4L2_TUNER_MODE_STEREO: case V4L2_TUNER_MODE_LANG1_LANG2: default: data = itv->card->gpio_audio_mode.stereo; break; } if (mask) write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT); return 0; } static int subdev_s_radio(struct v4l2_subdev *sd) { struct ivtv *itv = sd_to_ivtv(sd); u16 mask, data; mask = itv->card->gpio_audio_input.mask; data = itv->card->gpio_audio_input.radio; if (mask) write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT); return 0; } static int subdev_s_audio_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) { struct ivtv *itv = sd_to_ivtv(sd); u16 mask, data; if (input > 2) return -EINVAL; mask = itv->card->gpio_audio_input.mask; switch (input) { case 0: data = itv->card->gpio_audio_input.tuner; break; case 1: data = itv->card->gpio_audio_input.linein; break; case 2: default: data = itv->card->gpio_audio_input.radio; break; } if (mask) write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT); return 0; } static int subdev_s_ctrl(struct v4l2_ctrl *ctrl) { struct v4l2_subdev *sd = to_sd(ctrl); struct ivtv *itv = sd_to_ivtv(sd); u16 mask, data; switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: mask = itv->card->gpio_audio_mute.mask; data = ctrl->val ? itv->card->gpio_audio_mute.mute : 0; if (mask) write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT); return 0; } return -EINVAL; } static int subdev_log_status(struct v4l2_subdev *sd) { struct ivtv *itv = sd_to_ivtv(sd); IVTV_INFO("GPIO status: DIR=0x%04x OUT=0x%04x IN=0x%04x\n", read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT), read_reg(IVTV_REG_GPIO_IN)); v4l2_ctrl_handler_log_status(&itv->hdl_gpio, sd->name); return 0; } static int subdev_s_video_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) { struct ivtv *itv = sd_to_ivtv(sd); u16 mask, data; if (input > 2) /* 0:Tuner 1:Composite 2:S-Video */ return -EINVAL; mask = itv->card->gpio_video_input.mask; if (input == 0) data = itv->card->gpio_video_input.tuner; else if (input == 1) data = itv->card->gpio_video_input.composite; else data = itv->card->gpio_video_input.svideo; if (mask) write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT); return 0; } static const struct v4l2_ctrl_ops gpio_ctrl_ops = { .s_ctrl = subdev_s_ctrl, }; static const struct v4l2_subdev_core_ops subdev_core_ops = { .log_status = subdev_log_status, }; static const struct v4l2_subdev_tuner_ops subdev_tuner_ops = { .s_radio = subdev_s_radio, .g_tuner = subdev_g_tuner, .s_tuner = subdev_s_tuner, }; static const struct v4l2_subdev_audio_ops subdev_audio_ops = { .s_clock_freq = subdev_s_clock_freq, .s_routing = subdev_s_audio_routing, }; static const struct v4l2_subdev_video_ops subdev_video_ops = { .s_routing = subdev_s_video_routing, }; static const struct v4l2_subdev_ops subdev_ops = { .core = &subdev_core_ops, .tuner = &subdev_tuner_ops, .audio = &subdev_audio_ops, .video = &subdev_video_ops, }; int ivtv_gpio_init(struct ivtv *itv) { u16 pin = 0; if (itv->card->xceive_pin) pin = 1 << itv->card->xceive_pin; if ((itv->card->gpio_init.direction | pin) == 0) return 0; IVTV_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n", read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT)); /* init output data then direction */ write_reg(itv->card->gpio_init.initial_value | pin, IVTV_REG_GPIO_OUT); write_reg(itv->card->gpio_init.direction | pin, IVTV_REG_GPIO_DIR); v4l2_subdev_init(&itv->sd_gpio, &subdev_ops); snprintf(itv->sd_gpio.name, sizeof(itv->sd_gpio.name), "%s-gpio", itv->v4l2_dev.name); itv->sd_gpio.grp_id = IVTV_HW_GPIO; v4l2_ctrl_handler_init(&itv->hdl_gpio, 1); v4l2_ctrl_new_std(&itv->hdl_gpio, &gpio_ctrl_ops, V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); if (itv->hdl_gpio.error) return itv->hdl_gpio.error; itv->sd_gpio.ctrl_handler = &itv->hdl_gpio; v4l2_ctrl_handler_setup(&itv->hdl_gpio); return v4l2_device_register_subdev(&itv->v4l2_dev, &itv->sd_gpio); }