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Subject[RFC PATCH 3/3] es1968: add radio (tea575x tuner) support
Date
Add TEA5757 radio tuner support to es1968 driver. This is found at least on 
MediaForte SF64-PCE2 sound cards.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>

diff -urp linux-2.6.38-rc4-orig/sound/pci/es1968.c linux-2.6.38-rc4/sound/pci/es1968.c
--- linux-2.6.38-rc4-orig/sound/pci/es1968.c 2011-02-08 01:03:55.000000000 +0100
+++ linux-2.6.38-rc4/sound/pci/es1968.c 2011-03-18 22:51:48.000000000 +0100
@@ -112,6 +112,10 @@
#include <sound/ac97_codec.h>
#include <sound/initval.h>

+#ifdef CONFIG_SND_ES1968_RADIO
+#include <sound/tea575x-tuner.h>
+#endif
+
#define CARD_NAME "ESS Maestro1/2"
#define DRIVER_NAME "ES1968"

@@ -553,6 +557,10 @@ struct es1968 {
spinlock_t ac97_lock;
struct tasklet_struct hwvol_tq;
#endif
+
+#ifdef CONFIG_SND_ES1968_RADIO
+ struct snd_tea575x tea;
+#endif
};

static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id);
@@ -2571,6 +2579,111 @@ static int __devinit snd_es1968_input_re
}
#endif /* CONFIG_SND_ES1968_INPUT */

+#ifdef CONFIG_SND_ES1968_RADIO
+#define GPIO_DATA 0x60
+#define IO_MASK 4 /* mask register offset from GPIO_DATA
+ bits 1=unmask write to given bit */
+#define IO_DIR 8 /* direction register offset from GPIO_DATA
+ bits 0/1=read/write direction */
+/* mask bits for GPIO lines */
+#define STR_DATA 0x0040 /* GPIO6 */
+#define STR_CLK 0x0080 /* GPIO7 */
+#define STR_WREN 0x0100 /* GPIO8 */
+#define STR_MOST 0x0200 /* GPIO9 */
+
+static void snd_es1968_tea575x_write(struct snd_tea575x *tea, unsigned int val)
+{
+ struct es1968 *chip = tea->private_data;
+ unsigned long io = chip->io_port + GPIO_DATA;
+ u16 l, bits;
+ u16 omask, odir;
+
+ 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);
+
+ 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);
+}
+
+static unsigned int snd_es1968_tea575x_read(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);
+
+ return data & 0x3ffe;
+}
+
+static void snd_es1968_tea575x_mute(struct snd_tea575x *tea, unsigned int mute)
+{
+ struct es1968 *chip = tea->private_data;
+ unsigned long io = chip->io_port + GPIO_DATA;
+ u16 omask;
+
+ 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);
+}
+
+static struct snd_tea575x_ops snd_es1968_tea_ops = {
+ .write = snd_es1968_tea575x_write,
+ .read = snd_es1968_tea575x_read,
+ .mute = snd_es1968_tea575x_mute,
+};
+#endif
+
static int snd_es1968_free(struct es1968 *chip)
{
#ifdef CONFIG_SND_ES1968_INPUT
@@ -2585,6 +2698,10 @@ static int snd_es1968_free(struct es1968
outw(0, chip->io_port + ESM_PORT_HOST_IRQ); /* disable IRQ */
}

+#ifdef CONFIG_SND_ES1968_RADIO
+ snd_tea575x_exit(&chip->tea);
+#endif
+
if (chip->irq >= 0)
free_irq(chip->irq, chip);
snd_es1968_free_gameport(chip);
@@ -2723,6 +2840,14 @@ static int __devinit snd_es1968_create(s

snd_card_set_dev(card, &pci->dev);

+#ifdef CONFIG_SND_ES1968_RADIO
+ chip->tea.card = card;
+ chip->tea.freq_fixup = 10700;
+ chip->tea.private_data = chip;
+ chip->tea.ops = &snd_es1968_tea_ops;
+ snd_tea575x_init(&chip->tea);
+#endif
+
*chip_ret = chip;

return 0;
diff -urp linux-2.6.38-rc4-orig/sound/pci/Kconfig linux-2.6.38-rc4/sound/pci/Kconfig
--- linux-2.6.38-rc4-orig/sound/pci/Kconfig 2011-02-08 01:03:55.000000000 +0100
+++ linux-2.6.38-rc4/sound/pci/Kconfig 2011-03-13 00:01:26.000000000 +0100
@@ -528,6 +528,14 @@ config SND_ES1968_INPUT
If you say N the buttons will directly control the master volume.
It is recommended to say Y.

+config SND_ES1968_RADIO
+ bool "Enable TEA5757 radio tuner support for es1968"
+ depends on SND_ES1968
+ depends on VIDEO_V4L2=y || VIDEO_V4L2=SND_ES1968
+ help
+ Say Y here to include support for TEA5757 radio tuner integrated on
+ some MediaForte cards (e.g. SF64-PCE2).
+
config SND_FM801
tristate "ForteMedia FM801"
select SND_OPL3_LIB
@@ -549,10 +557,10 @@ config SND_FM801_TEA575X_BOOL
FM801 chip with a TEA5757 tuner connected to GPIO1-3 pins (Media
Forte SF256-PCS-02) into the snd-fm801 driver.

-config SND_FM801_TEA575X
+config SND_TEA575X
tristate
- depends on SND_FM801_TEA575X_BOOL
- default SND_FM801
+ depends on SND_FM801_TEA575X_BOOL || SND_ES1968_RADIO
+ default SND_FM801 || SND_ES1968

source "sound/pci/hda/Kconfig"

diff -urp linux-2.6.38-rc4-orig/sound/i2c/other/Makefile linux-2.6.38-rc4/sound/i2c/other/Makefile
--- linux-2.6.38-rc4-orig/sound/i2c/other/Makefile 2011-02-08 01:03:55.000000000 +0100
+++ linux-2.6.38-rc4/sound/i2c/other/Makefile 2011-03-12 23:59:37.000000000 +0100
@@ -14,4 +14,4 @@ snd-tea575x-tuner-objs := tea575x-tuner.
obj-$(CONFIG_SND_PDAUDIOCF) += snd-ak4117.o
obj-$(CONFIG_SND_ICE1712) += snd-ak4xxx-adda.o
obj-$(CONFIG_SND_ICE1724) += snd-ak4114.o snd-ak4113.o snd-ak4xxx-adda.o snd-pt2258.o
-obj-$(CONFIG_SND_FM801_TEA575X) += snd-tea575x-tuner.o
+obj-$(CONFIG_SND_TEA575X) += snd-tea575x-tuner.o

--
Ondrej Zary


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