ALSA: es1968: convert TEA575x support to new interface

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>

1 files changed, 24 insertions, 71 deletions

diff --git a/sound/pci/es1968.c b/sound/pci/es1968.c
index faf9138970ae..75c5e0ed6955 100644
--- a/sound/pci/es1968.c
+++ b/sound/pci/es1968.c
@@ -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;
-
-        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);
+        u16 val = inw(io);
 
-        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;