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