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Commit 9e8fa0e6 authored by Ondrej Zary's avatar Ondrej Zary Committed by Mauro Carvalho Chehab
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[media] radio-sf16fmr2: convert to generic TEA575x interface 

Convert radio-sf16fmr2 to use generic TEA575x implementation. Most of the
driver code goes away as SF16-FMR2 is basically just a TEA5757 tuner
connected to ISA bus.
The card can optionally be equipped with PT2254A volume control (equivalent
of TC9154AP) - the volume setting is completely reworked (with balance control
added) and tested.
Signed-off-by: default avatarOndrej Zary <linux@rainbow-software.org>
Acked-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent d2940930
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Showing with 145 additions and 390 deletions
drivers/media/radio/radio-sf16fmr2.c
View file @ 9e8fa0e6
/* SF16FMR2 radio driver for Linux radio support
* heavily based on fmi driver...
* (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
/* SF16-FMR2 radio driver for Linux
* Copyright (c) 2011 Ondrej Zary
*
* Notes on the hardware
*
* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
* No volume control - only mute/unmute - you have to use line volume
*
* For read stereo/mono you must wait 0.1 sec after set frequency and
* card unmuted so I set frequency on unmute
* Signal handling seem to work only on autoscanning (not implemented)
*
* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
* Original driver was (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
* but almost nothing remained here after conversion to generic TEA575x
* implementation
*/
#include <linux/delay.h>
#include <linux/module.h> /* Modules */
#include <linux/init.h> /* Initdata */
#include <linux/ioport.h> /* request_region */
#include <linux/delay.h> /* udelay */
#include <linux/videodev2.h> /* kernel radio structs */
#include <linux/mutex.h>
#include <linux/version.h> /* for KERNEL_VERSION MACRO */
#include <linux/io.h> /* outb, outb_p */
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <sound/tea575x-tuner.h>
MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
MODULE_AUTHOR("Ondrej Zary");
MODULE_DESCRIPTION("MediaForte SF16-FMR2 FM radio card driver");
MODULE_LICENSE("GPL");
static int io = 0x384;
static int radio_nr = -1;
module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
module_param(radio_nr, int, 0);
#define RADIO_VERSION KERNEL_VERSION(0,0,2)
#define AUD_VOL_INDEX 1
#undef DEBUG
//#define DEBUG 1
#ifdef DEBUG
# define debug_print(s) printk s
#else
# define debug_print(s)
#endif
/* this should be static vars for module size */
struct fmr2
{
struct v4l2_device v4l2_dev;
struct video_device vdev;
struct mutex lock;
struct fmr2 {
int io;
int curvol; /* 0-15 */
int mute;
int stereo; /* card is producing stereo audio */
unsigned long curfreq; /* freq in kHz */
int card_type;
struct snd_tea575x tea;
struct v4l2_ctrl *volume;
struct v4l2_ctrl *balance;
};
/* the port is hardwired so no need to support multiple cards */
#define FMR2_PORT 0x384
static struct fmr2 fmr2_card;
/* hw precision is 12.5 kHz
* It is only useful to give freq in interval of 200 (=0.0125Mhz),
* other bits will be truncated
*/
#define RSF16_ENCODE(x) ((x) / 200 + 856)
#define RSF16_MINFREQ (87 * 16000)
#define RSF16_MAXFREQ (108 * 16000)
static inline void wait(int n, int io)
{
for (; n; --n)
inb(io);
}
static void outbits(int bits, unsigned int data, int nWait, int io)
{
int bit;
for (; --bits >= 0;) {
bit = (data >> bits) & 1;
outb(bit, io);
wait(nWait, io);
outb(bit | 2, io);
wait(nWait, io);
outb(bit, io);
wait(nWait, io);
}
}
static inline void fmr2_mute(int io)
{
outb(0x00, io);
wait(4, io);
}
static inline void fmr2_unmute(int io)
{
outb(0x04, io);
wait(4, io);
}
static inline int fmr2_stereo_mode(int io)
{
int n = inb(io);
outb(6, io);
inb(io);
n = ((n >> 3) & 1) ^ 1;
debug_print((KERN_DEBUG "stereo: %d\n", n));
return n;
}
static int fmr2_product_info(struct fmr2 *dev)
{
int n = inb(dev->io);
n &= 0xC1;
if (n == 0) {
/* this should support volume set */
dev->card_type = 12;
return 0;
}
/* not volume (mine is 11) */
dev->card_type = (n == 128) ? 11 : 0;
return n;
}
/* TEA575x tuner pins */
#define STR_DATA (1 << 0)
#define STR_CLK (1 << 1)
#define STR_WREN (1 << 2)
#define STR_MOST (1 << 3)
/* PT2254A/TC9154A volume control pins */
#define PT_ST (1 << 4)
#define PT_CK (1 << 5)
#define PT_DATA (1 << 6)
/* volume control presence pin */
#define FMR2_HASVOL (1 << 7)
static inline int fmr2_getsigstr(struct fmr2 *dev)
static void fmr2_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
{
/* !!! works only if scanning freq */
int res = 0xffff;
outb(5, dev->io);
wait(4, dev->io);
if (!(inb(dev->io) & 1))
res = 0;
debug_print((KERN_DEBUG "signal: %d\n", res));
return res;
}
/* set frequency and unmute card */
static int fmr2_setfreq(struct fmr2 *dev)
{
unsigned long freq = dev->curfreq;
fmr2_mute(dev->io);
/* 0x42 for mono output
* 0x102 forward scanning
* 0x182 scansione avanti
*/
outbits(9, 0x2, 3, dev->io);
outbits(16, RSF16_ENCODE(freq), 2, dev->io);
fmr2_unmute(dev->io);
struct fmr2 *fmr2 = tea->private_data;
u8 bits = 0;
/* wait 0.11 sec */
msleep(110);
bits |= (pins & TEA575X_DATA) ? STR_DATA : 0;
bits |= (pins & TEA575X_CLK) ? STR_CLK : 0;
/* WRITE_ENABLE is inverted, DATA must be high during read */
bits |= (pins & TEA575X_WREN) ? 0 : STR_WREN | STR_DATA;
/* NOTE if mute this stop radio
you must set freq on unmute */
dev->stereo = fmr2_stereo_mode(dev->io);
return 0;
}
/* !!! not tested, in my card this doesn't work !!! */
static int fmr2_setvolume(struct fmr2 *dev)
{
int vol[16] = { 0x021, 0x084, 0x090, 0x104,
0x110, 0x204, 0x210, 0x402,
0x404, 0x408, 0x410, 0x801,
0x802, 0x804, 0x808, 0x810 };
int i, a;
int n = vol[dev->curvol & 0x0f];
if (dev->card_type != 11)
return 1;
for (i = 12; --i >= 0; ) {
a = ((n >> i) & 1) << 6; /* if (a==0) a = 0; else a = 0x40; */
outb(a | 4, dev->io);
wait(4, dev->io);
outb(a | 0x24, dev->io);
wait(4, dev->io);
outb(a | 4, dev->io);
wait(4, dev->io);
}
for (i = 6; --i >= 0; ) {
a = ((0x18 >> i) & 1) << 6;
outb(a | 4, dev->io);
wait(4, dev->io);
outb(a | 0x24, dev->io);
wait(4, dev->io);
outb(a | 4, dev->io);
wait(4, dev->io);
}
wait(4, dev->io);
outb(0x14, dev->io);
return 0;
outb(bits, fmr2->io);
}
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *v)
static u8 fmr2_tea575x_get_pins(struct snd_tea575x *tea)
{
strlcpy(v->driver, "radio-sf16fmr2", sizeof(v->driver));
strlcpy(v->card, "SF16-FMR2 radio", sizeof(v->card));
strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
v->version = RADIO_VERSION;
v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
return 0;
}
static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
struct fmr2 *fmr2 = video_drvdata(file);
if (v->index > 0)
return -EINVAL;
struct fmr2 *fmr2 = tea->private_data;
u8 bits = inb(fmr2->io);
strlcpy(v->name, "FM", sizeof(v->name));
v->type = V4L2_TUNER_RADIO;
v->rangelow = RSF16_MINFREQ;
v->rangehigh = RSF16_MAXFREQ;
v->rxsubchans = fmr2->stereo ? V4L2_TUNER_SUB_STEREO :
V4L2_TUNER_SUB_MONO;
v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW;
v->audmode = V4L2_TUNER_MODE_STEREO;
mutex_lock(&fmr2->lock);
v->signal = fmr2_getsigstr(fmr2);
mutex_unlock(&fmr2->lock);
return 0;
return (bits & STR_DATA) ? TEA575X_DATA : 0 |
(bits & STR_MOST) ? TEA575X_MOST : 0;
}
static int vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
static void fmr2_tea575x_set_direction(struct snd_tea575x *tea, bool output)
{
return v->index ? -EINVAL : 0;
}
static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct fmr2 *fmr2 = video_drvdata(file);
static struct snd_tea575x_ops fmr2_tea_ops = {
.set_pins = fmr2_tea575x_set_pins,
.get_pins = fmr2_tea575x_get_pins,
.set_direction = fmr2_tea575x_set_direction,
};
if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
return -EINVAL;
if (f->frequency < RSF16_MINFREQ ||
f->frequency > RSF16_MAXFREQ)
return -EINVAL;
/* rounding in steps of 200 to match the freq
that will be used */
fmr2->curfreq = (f->frequency / 200) * 200;
/* set card freq (if not muted) */
if (fmr2->curvol && !fmr2->mute) {
mutex_lock(&fmr2->lock);
fmr2_setfreq(fmr2);
mutex_unlock(&fmr2->lock);
/* TC9154A/PT2254A volume control */
/* 18-bit shift register bit definitions */
#define TC9154A_ATT_MAJ_0DB (1 << 0)
#define TC9154A_ATT_MAJ_10DB (1 << 1)
#define TC9154A_ATT_MAJ_20DB (1 << 2)
#define TC9154A_ATT_MAJ_30DB (1 << 3)
#define TC9154A_ATT_MAJ_40DB (1 << 4)
#define TC9154A_ATT_MAJ_50DB (1 << 5)
#define TC9154A_ATT_MAJ_60DB (1 << 6)
#define TC9154A_ATT_MIN_0DB (1 << 7)
#define TC9154A_ATT_MIN_2DB (1 << 8)
#define TC9154A_ATT_MIN_4DB (1 << 9)
#define TC9154A_ATT_MIN_6DB (1 << 10)
#define TC9154A_ATT_MIN_8DB (1 << 11)
/* bit 12 is ignored */
#define TC9154A_CHANNEL_LEFT (1 << 13)
#define TC9154A_CHANNEL_RIGHT (1 << 14)
/* bits 15, 16, 17 must be 0 */
#define TC9154A_ATT_MAJ(x) (1 << x)
#define TC9154A_ATT_MIN(x) (1 << (7 + x))
static void tc9154a_set_pins(struct fmr2 *fmr2, u8 pins)
{
if (!fmr2->tea.mute)
pins |= STR_WREN;
outb(pins, fmr2->io);
}
static void tc9154a_set_attenuation(struct fmr2 *fmr2, int att, u32 channel)
{
int i;
u32 reg;
u8 bit;
reg = TC9154A_ATT_MAJ(att / 10) | TC9154A_ATT_MIN((att % 10) / 2);
reg |= channel;
/* write 18-bit shift register, LSB first */
for (i = 0; i < 18; i++) {
bit = reg & (1 << i) ? PT_DATA : 0;
tc9154a_set_pins(fmr2, bit);
udelay(5);
tc9154a_set_pins(fmr2, bit | PT_CK);
udelay(5);
tc9154a_set_pins(fmr2, bit);
}
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct fmr2 *fmr2 = video_drvdata(file);
if (f->tuner != 0)
return -EINVAL;
f->type = V4L2_TUNER_RADIO;
f->frequency = fmr2->curfreq;
return 0;
}
static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qc)
{
struct fmr2 *fmr2 = video_drvdata(file);
switch (qc->id) {
case V4L2_CID_AUDIO_MUTE:
return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
case V4L2_CID_AUDIO_VOLUME:
/* Only card_type == 11 implements volume */
if (fmr2->card_type == 11)
return v4l2_ctrl_query_fill(qc, 0, 15, 1, 0);
return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
}
return -EINVAL;
/* latch register data */
udelay(5);
tc9154a_set_pins(fmr2, PT_ST);
udelay(5);
tc9154a_set_pins(fmr2, 0);
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
static int fmr2_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct fmr2 *fmr2 = video_drvdata(file);
struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler);
struct fmr2 *fmr2 = tea->private_data;
int volume, balance, left, right;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value = fmr2->mute;
return 0;
case V4L2_CID_AUDIO_VOLUME:
ctrl->value = fmr2->curvol;
return 0;
}
return -EINVAL;
}
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct fmr2 *fmr2 = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
fmr2->mute = ctrl->value;
volume = ctrl->val;
balance = fmr2->balance->cur.val;
break;
case V4L2_CID_AUDIO_VOLUME:
fmr2->curvol = ctrl->value;
case V4L2_CID_AUDIO_BALANCE:
balance = ctrl->val;
volume = fmr2->volume->cur.val;
break;
default:
return -EINVAL;
}
#ifdef DEBUG
if (fmr2->curvol && !fmr2->mute)
printk(KERN_DEBUG "unmute\n");
else
printk(KERN_DEBUG "mute\n");
#endif
mutex_lock(&fmr2->lock);
if (fmr2->curvol && !fmr2->mute) {
fmr2_setvolume(fmr2);
/* Set frequency and unmute card */
fmr2_setfreq(fmr2);
} else
fmr2_mute(fmr2->io);
mutex_unlock(&fmr2->lock);
return 0;
}
static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
{
*i = 0;
return 0;
}
left = right = volume;
if (balance < 0)
right = max(0, right + balance);
if (balance > 0)
left = max(0, left - balance);
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
{
return i ? -EINVAL : 0;
}
tc9154a_set_attenuation(fmr2, abs(left - 68), TC9154A_CHANNEL_LEFT);
tc9154a_set_attenuation(fmr2, abs(right - 68), TC9154A_CHANNEL_RIGHT);
static int vidioc_g_audio(struct file *file, void *priv,
struct v4l2_audio *a)
{
a->index = 0;
strlcpy(a->name, "Radio", sizeof(a->name));
a->capability = V4L2_AUDCAP_STEREO;
return 0;
}
static int vidioc_s_audio(struct file *file, void *priv,
struct v4l2_audio *a)
static const struct v4l2_ctrl_ops fmr2_ctrl_ops = {
.s_ctrl = fmr2_s_ctrl,
};
static int fmr2_tea_ext_init(struct snd_tea575x *tea)
{
return a->index ? -EINVAL : 0;
}
struct fmr2 *fmr2 = tea->private_data;
static const struct v4l2_file_operations fmr2_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = video_ioctl2,
};
if (inb(fmr2->io) & FMR2_HASVOL) {
fmr2->volume = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_VOLUME, 0, 68, 2, 56);
fmr2->balance = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_BALANCE, -68, 68, 2, 0);
if (tea->ctrl_handler.error) {
printk(KERN_ERR "radio-sf16fmr2: can't initialize contrls\n");
return tea->ctrl_handler.error;
}
}
static const struct v4l2_ioctl_ops fmr2_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_audio = vidioc_g_audio,
.vidioc_s_audio = vidioc_s_audio,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
.vidioc_queryctrl = vidioc_queryctrl,
.vidioc_g_ctrl = vidioc_g_ctrl,
.vidioc_s_ctrl = vidioc_s_ctrl,
};
return 0;
}
static int __init fmr2_init(void)
{
struct fmr2 *fmr2 = &fmr2_card;
struct v4l2_device *v4l2_dev = &fmr2->v4l2_dev;
int res;
strlcpy(v4l2_dev->name, "sf16fmr2", sizeof(v4l2_dev->name));
fmr2->io = io;
fmr2->stereo = 1;
mutex_init(&fmr2->lock);
fmr2->io = FMR2_PORT;
if (!request_region(fmr2->io, 2, "sf16fmr2")) {
v4l2_err(v4l2_dev, "request_region failed!\n");
if (!request_region(fmr2->io, 2, "SF16-FMR2")) {
printk(KERN_ERR "radio-sf16fmr2: I/O port 0x%x already in use\n", fmr2->io);
return -EBUSY;
}
res = v4l2_device_register(NULL, v4l2_dev);
if (res < 0) {
release_region(fmr2->io, 2);
v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
return res;
}
fmr2->tea.private_data = fmr2;
fmr2->tea.ops = &fmr2_tea_ops;
fmr2->tea.ext_init = fmr2_tea_ext_init;
strlcpy(fmr2->tea.card, "SF16-FMR2", sizeof(fmr2->tea.card));
strcpy(fmr2->tea.bus_info, "ISA");
strlcpy(fmr2->vdev.name, v4l2_dev->name, sizeof(fmr2->vdev.name));
fmr2->vdev.v4l2_dev = v4l2_dev;
fmr2->vdev.fops = &fmr2_fops;
fmr2->vdev.ioctl_ops = &fmr2_ioctl_ops;
fmr2->vdev.release = video_device_release_empty;
video_set_drvdata(&fmr2->vdev, fmr2);
/* mute card - prevents noisy bootups */
fmr2_mute(fmr2->io);
fmr2_product_info(fmr2);
if (video_register_device(&fmr2->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
v4l2_device_unregister(v4l2_dev);
if (snd_tea575x_init(&fmr2->tea)) {
printk(KERN_ERR "radio-sf16fmr2: Unable to detect TEA575x tuner\n");
release_region(fmr2->io, 2);
return -EINVAL;
return -ENODEV;
}
v4l2_info(v4l2_dev, "SF16FMR2 radio card driver at 0x%x.\n", fmr2->io);
debug_print((KERN_DEBUG "card_type %d\n", fmr2->card_type));
printk(KERN_INFO "radio-sf16fmr2: SF16-FMR2 radio card at 0x%x.\n", fmr2->io);
return 0;
}
......@@ -443,22 +211,9 @@ static void __exit fmr2_exit(void)
{
struct fmr2 *fmr2 = &fmr2_card;
video_unregister_device(&fmr2->vdev);
v4l2_device_unregister(&fmr2->v4l2_dev);
snd_tea575x_exit(&fmr2->tea);
release_region(fmr2->io, 2);
}
module_init(fmr2_init);
module_exit(fmr2_exit);
#ifndef MODULE
static int __init fmr2_setup_io(char *str)
{
get_option(&str, &io);
return 1;
}
__setup("sf16fmr2=", fmr2_setup_io);
#endif
sound/pci/Kconfig
View file @ 9e8fa0e6
......@@ -565,8 +565,8 @@ config SND_FM801_TEA575X_BOOL
config SND_TEA575X
tristate
depends on SND_FM801_TEA575X_BOOL || SND_ES1968_RADIO
default SND_FM801 || SND_ES1968
depends on SND_FM801_TEA575X_BOOL || SND_ES1968_RADIO || RADIO_SF16FMR2
default SND_FM801 || SND_ES1968 || RADIO_SF16FMR2
source "sound/pci/hda/Kconfig"
......
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