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[media] bttv: Convert to generic TEA575x interface

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Remove tea575x-specific code from bttv and use the common driver instead.

Only set_frequency is implemented (signal/stereo detection or seek would
require more changes to bttv).

It works fine on Video Highway Xtreme (it actually makes the radio usable as
it currently cannot be tuned properly).

Miro/Pinnacle is untested but seems to be simple and should work.

However, I don't understand the Terratec Active Radio Upgrade code. The HW
seems to need IOR, IOW and CSEL signals that were taken from ISA bus on
older cards (IOR and IOW directly and CSEL from some address decoder) and
are emulated here using GPIOs. But the code manipulating these signals in
bttv seems to be broken - it never asserts the IOR signal. If anyone has
this HW, please test if I got that right.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Ondrej Zary 2015-01-15 17:10:45 -03:00 committed by Mauro Carvalho Chehab
parent 36eb6c41ce
commit 1b50037315
4 changed files with 125 additions and 215 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/media/pci/bt8xx/Kconfig
View File

@ -4,12 +4,15 @@ config VIDEO_BT848
select I2C_ALGOBIT
select VIDEOBUF_DMA_SG
depends on RC_CORE
depends on MEDIA_RADIO_SUPPORT
select VIDEO_TUNER
select VIDEO_TVEEPROM
select VIDEO_MSP3400 if MEDIA_SUBDRV_AUTOSELECT
select VIDEO_TVAUDIO if MEDIA_SUBDRV_AUTOSELECT
select VIDEO_TDA7432 if MEDIA_SUBDRV_AUTOSELECT
select VIDEO_SAA6588 if MEDIA_SUBDRV_AUTOSELECT
select RADIO_ADAPTERS
select RADIO_TEA575X
---help---
Support for BT848 based frame grabber/overlay boards. This includes
the Miro, Hauppauge and STB boards. Please read the material in

317
drivers/media/pci/bt8xx/bttv-cards.c
View File

@ -84,8 +84,7 @@ static void gv800s_init(struct bttv *btv);
static void td3116_muxsel(struct bttv *btv, unsigned int input);
static int terratec_active_radio_upgrade(struct bttv *btv);
static int tea5757_read(struct bttv *btv);
static int tea5757_write(struct bttv *btv, int value);
static int tea575x_init(struct bttv *btv);
static void identify_by_eeprom(struct bttv *btv,
unsigned char eeprom_data[256]);
static int pvr_boot(struct bttv *btv);
@ -3085,12 +3084,12 @@ static void miro_pinnacle_gpio(struct bttv *btv)
if (0 == (gpio & 0x20)) {
btv->has_radio = 1;
if (!miro_fmtuner[id]) {
btv->has_matchbox = 1;
btv->mbox_we = (1<<6);
btv->mbox_most = (1<<7);
btv->mbox_clk = (1<<8);
btv->mbox_data = (1<<9);
btv->mbox_mask = (1<<6)|(1<<7)|(1<<8)|(1<<9);
btv->has_tea575x = 1;
btv->tea_gpio.wren = 6;
btv->tea_gpio.most = 7;
btv->tea_gpio.clk = 8;
btv->tea_gpio.data = 9;
tea575x_init(btv);
}
} else {
btv->has_radio = 0;
@ -3104,7 +3103,7 @@ static void miro_pinnacle_gpio(struct bttv *btv)
pr_info("%d: miro: id=%d tuner=%d radio=%s stereo=%s\n",
btv->c.nr, id+1, btv->tuner_type,
!btv->has_radio ? "no" :
(btv->has_matchbox ? "matchbox" : "fmtuner"),
(btv->has_tea575x ? "tea575x" : "fmtuner"),
(-1 == msp) ? "no" : "yes");
} else {
/* new cards with microtune tuner */
@ -3382,12 +3381,12 @@ void bttv_init_card2(struct bttv *btv)
break;
case BTTV_BOARD_VHX:
btv->has_radio = 1;
btv->has_matchbox = 1;
btv->mbox_we = 0x20;
btv->mbox_most = 0;
btv->mbox_clk = 0x08;
btv->mbox_data = 0x10;
btv->mbox_mask = 0x38;
btv->has_tea575x = 1;
btv->tea_gpio.wren = 5;
btv->tea_gpio.most = 6;
btv->tea_gpio.clk = 3;
btv->tea_gpio.data = 4;
tea575x_init(btv);
break;
case BTTV_BOARD_VOBIS_BOOSTAR:
case BTTV_BOARD_TERRATV:
@ -3745,33 +3744,112 @@ static void hauppauge_eeprom(struct bttv *btv)
btv->radio_uses_msp_demodulator = 1;
}
/* ----------------------------------------------------------------------- */
static void bttv_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
{
struct bttv *btv = tea->private_data;
struct bttv_tea575x_gpio gpio = btv->tea_gpio;
u16 val = 0;
val |= (pins & TEA575X_DATA) ? (1 << gpio.data) : 0;
val |= (pins & TEA575X_CLK) ? (1 << gpio.clk) : 0;
val |= (pins & TEA575X_WREN) ? (1 << gpio.wren) : 0;
gpio_bits((1 << gpio.data) | (1 << gpio.clk) | (1 << gpio.wren), val);
if (btv->mbox_ior) {
/* IOW and CSEL active */
gpio_bits(btv->mbox_iow | btv->mbox_csel, 0);
udelay(5);
/* all inactive */
gpio_bits(btv->mbox_ior | btv->mbox_iow | btv->mbox_csel,
btv->mbox_ior | btv->mbox_iow | btv->mbox_csel);
}
}
static u8 bttv_tea575x_get_pins(struct snd_tea575x *tea)
{
struct bttv *btv = tea->private_data;
struct bttv_tea575x_gpio gpio = btv->tea_gpio;
u8 ret = 0;
u16 val;
if (btv->mbox_ior) {
/* IOR and CSEL active */
gpio_bits(btv->mbox_ior | btv->mbox_csel, 0);
udelay(5);
}
val = gpio_read();
if (btv->mbox_ior) {
/* all inactive */
gpio_bits(btv->mbox_ior | btv->mbox_iow | btv->mbox_csel,
btv->mbox_ior | btv->mbox_iow | btv->mbox_csel);
}
if (val & (1 << gpio.data))
ret |= TEA575X_DATA;
if (val & (1 << gpio.most))
ret |= TEA575X_MOST;
return ret;
}
static void bttv_tea575x_set_direction(struct snd_tea575x *tea, bool output)
{
struct bttv *btv = tea->private_data;
struct bttv_tea575x_gpio gpio = btv->tea_gpio;
u32 mask = (1 << gpio.clk) | (1 << gpio.wren) | (1 << gpio.data) |
(1 << gpio.most);
if (output)
gpio_inout(mask, (1 << gpio.data) | (1 << gpio.clk) |
(1 << gpio.wren));
else
gpio_inout(mask, (1 << gpio.clk) | (1 << gpio.wren));
}
static struct snd_tea575x_ops bttv_tea_ops = {
.set_pins = bttv_tea575x_set_pins,
.get_pins = bttv_tea575x_get_pins,
.set_direction = bttv_tea575x_set_direction,
};
static int tea575x_init(struct bttv *btv)
{
btv->tea.private_data = btv;
btv->tea.ops = &bttv_tea_ops;
if (!snd_tea575x_hw_init(&btv->tea)) {
pr_info("%d: detected TEA575x radio\n", btv->c.nr);
btv->tea.mute = false;
return 0;
}
btv->has_tea575x = 0;
btv->has_radio = 0;
return -ENODEV;
}
/* ----------------------------------------------------------------------- */
static int terratec_active_radio_upgrade(struct bttv *btv)
{
int freq;
btv->has_radio = 1;
btv->has_matchbox = 1;
btv->mbox_we = 0x10;
btv->mbox_most = 0x20;
btv->mbox_clk = 0x08;
btv->mbox_data = 0x04;
btv->mbox_mask = 0x3c;
btv->has_tea575x = 1;
btv->tea_gpio.wren = 4;
btv->tea_gpio.most = 5;
btv->tea_gpio.clk = 3;
btv->tea_gpio.data = 2;
btv->mbox_iow = 1 << 8;
btv->mbox_ior = 1 << 9;
btv->mbox_csel = 1 << 10;
freq=88000/62.5;
tea5757_write(btv, 5 * freq + 0x358); /* write 0x1ed8 */
if (0x1ed8 == tea5757_read(btv)) {
if (!tea575x_init(btv)) {
pr_info("%d: Terratec Active Radio Upgrade found\n", btv->c.nr);
btv->has_radio = 1;
btv->has_saa6588 = 1;
btv->has_matchbox = 1;
} else {
btv->has_radio = 0;
btv->has_matchbox = 0;
btv->has_saa6588 = 1;
}
return 0;
}
@ -4292,181 +4370,6 @@ init_PCI8604PW(struct bttv *btv)
}
}
/* ----------------------------------------------------------------------- */
/* Miro Pro radio stuff -- the tea5757 is connected to some GPIO ports */
/*
* Copyright (c) 1999 Csaba Halasz <qgehali@uni-miskolc.hu>
* This code is placed under the terms of the GNU General Public License
*
* Brutally hacked by Dan Sheridan <dan.sheridan@contact.org.uk> djs52 8/3/00
*/
static void bus_low(struct bttv *btv, int bit)
{
if (btv->mbox_ior) {
gpio_bits(btv->mbox_ior | btv->mbox_iow | btv->mbox_csel,
btv->mbox_ior | btv->mbox_iow | btv->mbox_csel);
udelay(5);
}
gpio_bits(bit,0);
udelay(5);
if (btv->mbox_ior) {
gpio_bits(btv->mbox_iow | btv->mbox_csel, 0);
udelay(5);
}
}
static void bus_high(struct bttv *btv, int bit)
{
if (btv->mbox_ior) {
gpio_bits(btv->mbox_ior | btv->mbox_iow | btv->mbox_csel,
btv->mbox_ior | btv->mbox_iow | btv->mbox_csel);
udelay(5);
}
gpio_bits(bit,bit);
udelay(5);
if (btv->mbox_ior) {
gpio_bits(btv->mbox_iow | btv->mbox_csel, 0);
udelay(5);
}
}
static int bus_in(struct bttv *btv, int bit)
{
if (btv->mbox_ior) {
gpio_bits(btv->mbox_ior | btv->mbox_iow | btv->mbox_csel,
btv->mbox_ior | btv->mbox_iow | btv->mbox_csel);
udelay(5);
gpio_bits(btv->mbox_iow | btv->mbox_csel, 0);
udelay(5);
}
return gpio_read() & (bit);
}
/* TEA5757 register bits */
#define TEA_FREQ 0:14
#define TEA_BUFFER 15:15
#define TEA_SIGNAL_STRENGTH 16:17
#define TEA_PORT1 18:18
#define TEA_PORT0 19:19
#define TEA_BAND 20:21
#define TEA_BAND_FM 0
#define TEA_BAND_MW 1
#define TEA_BAND_LW 2
#define TEA_BAND_SW 3
#define TEA_MONO 22:22
#define TEA_ALLOW_STEREO 0
#define TEA_FORCE_MONO 1
#define TEA_SEARCH_DIRECTION 23:23
#define TEA_SEARCH_DOWN 0
#define TEA_SEARCH_UP 1
#define TEA_STATUS 24:24
#define TEA_STATUS_TUNED 0
#define TEA_STATUS_SEARCHING 1
/* Low-level stuff */
static int tea5757_read(struct bttv *btv)
{
unsigned long timeout;
int value = 0;
int i;
/* better safe than sorry */
gpio_inout(btv->mbox_mask, btv->mbox_clk | btv->mbox_we);
if (btv->mbox_ior) {
gpio_bits(btv->mbox_ior | btv->mbox_iow | btv->mbox_csel,
btv->mbox_ior | btv->mbox_iow | btv->mbox_csel);
udelay(5);
}
if (bttv_gpio)
bttv_gpio_tracking(btv,"tea5757 read");
bus_low(btv,btv->mbox_we);
bus_low(btv,btv->mbox_clk);
udelay(10);
timeout= jiffies + msecs_to_jiffies(1000);
/* wait for DATA line to go low; error if it doesn't */
while (bus_in(btv,btv->mbox_data) && time_before(jiffies, timeout))
schedule();
if (bus_in(btv,btv->mbox_data)) {
pr_warn("%d: tea5757: read timeout\n", btv->c.nr);
return -1;
}
dprintk("%d: tea5757:", btv->c.nr);
for (i = 0; i < 24; i++) {
udelay(5);
bus_high(btv,btv->mbox_clk);
udelay(5);
dprintk_cont("%c",
bus_in(btv, btv->mbox_most) == 0 ? 'T' : '-');
bus_low(btv,btv->mbox_clk);
value <<= 1;
value |= (bus_in(btv,btv->mbox_data) == 0)?0:1; /* MSB first */
dprintk_cont("%c",
bus_in(btv, btv->mbox_most) == 0 ? 'S' : 'M');
}
dprintk_cont("\n");
dprintk("%d: tea5757: read 0x%X\n", btv->c.nr, value);
return value;
}
static int tea5757_write(struct bttv *btv, int value)
{
int i;
int reg = value;
gpio_inout(btv->mbox_mask, btv->mbox_clk | btv->mbox_we | btv->mbox_data);
if (btv->mbox_ior) {
gpio_bits(btv->mbox_ior | btv->mbox_iow | btv->mbox_csel,
btv->mbox_ior | btv->mbox_iow | btv->mbox_csel);
udelay(5);
}
if (bttv_gpio)
bttv_gpio_tracking(btv,"tea5757 write");
dprintk("%d: tea5757: write 0x%X\n", btv->c.nr, value);
bus_low(btv,btv->mbox_clk);
bus_high(btv,btv->mbox_we);
for (i = 0; i < 25; i++) {
if (reg & 0x1000000)
bus_high(btv,btv->mbox_data);
else
bus_low(btv,btv->mbox_data);
reg <<= 1;
bus_high(btv,btv->mbox_clk);
udelay(10);
bus_low(btv,btv->mbox_clk);
udelay(10);
}
bus_low(btv,btv->mbox_we); /* unmute !!! */
return 0;
}
void tea5757_set_freq(struct bttv *btv, unsigned short freq)
{
dprintk("tea5757_set_freq %d\n",freq);
tea5757_write(btv, 5 * freq + 0x358); /* add 10.7MHz (see docs) */
}
/* RemoteVision MX (rv605) muxsel helper [Miguel Freitas]
*
* This is needed because rv605 don't use a normal multiplex, but a crosspoint

6
drivers/media/pci/bt8xx/bttv-driver.c
View File

@ -1874,8 +1874,10 @@ static void bttv_set_frequency(struct bttv *btv, const struct v4l2_frequency *f)
if (new_freq.type == V4L2_TUNER_RADIO) {
radio_enable(btv);
btv->radio_freq = new_freq.frequency;
if (btv->has_matchbox)
tea5757_set_freq(btv, btv->radio_freq);
if (btv->has_tea575x) {
btv->tea.freq = btv->radio_freq;
snd_tea575x_set_freq(&btv->tea);
}
} else {
btv->tv_freq = new_freq.frequency;
}

14
drivers/media/pci/bt8xx/bttvp.h
View File

@ -42,6 +42,7 @@
#include <media/tveeprom.h>
#include <media/rc-core.h>
#include <media/ir-kbd-i2c.h>
#include <media/tea575x.h>
#include "bt848.h"
#include "bttv.h"
@ -359,6 +360,10 @@ struct bttv_suspend_state {
struct bttv_buffer *vbi;
};
struct bttv_tea575x_gpio {
u8 data, clk, wren, most;
};
struct bttv {
struct bttv_core c;
@ -445,12 +450,9 @@ struct bttv {
/* miro/pinnacle + Aimslab VHX
philips matchbox (tea5757 radio tuner) support */
int has_matchbox;
int mbox_we;
int mbox_data;
int mbox_clk;
int mbox_most;
int mbox_mask;
int has_tea575x;
struct bttv_tea575x_gpio tea_gpio;
struct snd_tea575x tea;
/* ISA stuff (Terratec Active Radio Upgrade) */
int mbox_ior;