375 lines
10 KiB
C
375 lines
10 KiB
C
/*
|
|
gpio functions.
|
|
Merging GPIO support into driver:
|
|
Copyright (C) 2004 Chris Kennedy <c@groovy.org>
|
|
Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "ivtv-driver.h"
|
|
#include "ivtv-cards.h"
|
|
#include "ivtv-gpio.h"
|
|
#include "tuner-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, 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,
|
|
.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
|
|
.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
|
|
.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
|
|
.g_ctrl = v4l2_subdev_g_ctrl,
|
|
.s_ctrl = v4l2_subdev_s_ctrl,
|
|
.queryctrl = v4l2_subdev_queryctrl,
|
|
.querymenu = v4l2_subdev_querymenu,
|
|
};
|
|
|
|
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);
|
|
}
|