Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ALSA: es1968: convert TEA575x support to new interface

Browse source 
Use common functions to access TEA575x tuner - remove original read/write
functions and provide new pin manipulation functions instead.

Tested with SF64-PCE2 card.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Ondrej Zary 2011-05-09 23:39:37 +02:00 committed by Takashi Iwai
parent 14219d0659
commit 72587173cc
1 changed files with 24 additions and 71 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

95
sound/pci/es1968.c
View file

@ -2591,96 +2591,48 @@ static int __devinit snd_es1968_input_register(struct es1968 *chip)
#define STR_WREN 0x0100 /* GPIO8 */
#define STR_MOST 0x0200 /* GPIO9 */
static void snd_es1968_tea575x_write(struct snd_tea575x *tea, unsigned int val)
static void snd_es1968_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
{
struct es1968 *chip = tea->private_data;
unsigned long io = chip->io_port + GPIO_DATA;
u16 l, bits;
u16 omask, odir;
u16 val = 0;
omask = inw(io + IO_MASK);
odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN);
outw(odir | STR_DATA, io + IO_DIR);
outw(~(STR_DATA | STR_CLK | STR_WREN), io + IO_MASK);
udelay(16);
val |= (pins & TEA575X_DATA) ? STR_DATA : 0;
val |= (pins & TEA575X_CLK) ? STR_CLK : 0;
val |= (pins & TEA575X_WREN) ? STR_WREN : 0;
for (l = 25; l; l--) {
bits = ((val >> 18) & STR_DATA) | STR_WREN;
val <<= 1; /* shift data */
outw(bits, io); /* start strobe */
udelay(2);
outw(bits | STR_CLK, io); /* HI level */
udelay(2);
outw(bits, io); /* LO level */
udelay(4);
}
if (!tea->mute)
outw(0, io);
udelay(4);
outw(omask, io + IO_MASK);
outw(odir, io + IO_DIR);
msleep(125);
outw(val, io);
}
static unsigned int snd_es1968_tea575x_read(struct snd_tea575x *tea)
static u8 snd_es1968_tea575x_get_pins(struct snd_tea575x *tea)
{
struct es1968 *chip = tea->private_data;
unsigned long io = chip->io_port + GPIO_DATA;
u16 l, rdata;
u32 data = 0;
u16 omask;
u16 val = inw(io);
omask = inw(io + IO_MASK);
outw(~(STR_CLK | STR_WREN), io + IO_MASK);
outw(0, io);
udelay(16);
for (l = 24; l--;) {
outw(STR_CLK, io); /* HI state */
udelay(2);
if (!l)
tea->tuned = inw(io) & STR_MOST ? 0 : 1;
outw(0, io); /* LO state */
udelay(2);
data <<= 1; /* shift data */
rdata = inw(io);
if (!l)
tea->stereo = (rdata & STR_MOST) ? 0 : 1;
else if (l && rdata & STR_DATA)
data++;
udelay(2);
}
if (tea->mute)
outw(STR_WREN, io);
udelay(4);
outw(omask, io + IO_MASK);
return data & 0x3ffe;
return (val & STR_DATA) ? TEA575X_DATA : 0 |
(val & STR_MOST) ? TEA575X_MOST : 0;
}
static void snd_es1968_tea575x_mute(struct snd_tea575x *tea, unsigned int mute)
static void snd_es1968_tea575x_set_direction(struct snd_tea575x *tea, bool output)
{
struct es1968 *chip = tea->private_data;
unsigned long io = chip->io_port + GPIO_DATA;
u16 omask;
u16 odir = inw(io + IO_DIR);
omask = inw(io + IO_MASK);
outw(~STR_WREN, io + IO_MASK);
tea->mute = mute;
outw(tea->mute ? STR_WREN : 0, io);
udelay(4);
outw(omask, io + IO_MASK);
msleep(125);
if (output) {
outw(~(STR_DATA | STR_CLK | STR_WREN), io + IO_MASK);
outw(odir | STR_DATA | STR_CLK | STR_WREN, io + IO_DIR);
} else {
outw(~(STR_CLK | STR_WREN | STR_DATA | STR_MOST), io + IO_MASK);
outw((odir & ~(STR_DATA | STR_MOST)) | STR_CLK | STR_WREN, io + IO_DIR);
}
}
static struct snd_tea575x_ops snd_es1968_tea_ops = {
.write = snd_es1968_tea575x_write,
.read = snd_es1968_tea575x_read,
.mute = snd_es1968_tea575x_mute,
.set_pins = snd_es1968_tea575x_set_pins,
.get_pins = snd_es1968_tea575x_get_pins,
.set_direction = snd_es1968_tea575x_set_direction,
};
#endif
@ -2845,7 +2797,8 @@ static int __devinit snd_es1968_create(struct snd_card *card,
chip->tea.freq_fixup = 10700;
chip->tea.private_data = chip;
chip->tea.ops = &snd_es1968_tea_ops;
snd_tea575x_init(&chip->tea);
if (!snd_tea575x_init(&chip->tea))
printk(KERN_INFO "es1968: detected TEA575x radio\n");
#endif
*chip_ret = chip;