[PATCH] bttv: Convert to generic TEA575x interface

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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).

Tested on Video Highway Xtreme.
I don't have the Miro/Pinnacle or Terratec Active Radio Upgrade to test.

Miro/Pinnacle 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@xxxxxxxxxxxxxxxxxxxx>
---
 drivers/media/pci/bt8xx/Kconfig       |    1 +
 drivers/media/pci/bt8xx/bttv-cards.c  |  317 ++++++++++++---------------------
 drivers/media/pci/bt8xx/bttv-driver.c |    6 +-
 drivers/media/pci/bt8xx/bttvp.h       |   14 +-
 drivers/media/radio/Kconfig           |    4 +-
 5 files changed, 125 insertions(+), 217 deletions(-)

diff --git a/drivers/media/pci/bt8xx/Kconfig b/drivers/media/pci/bt8xx/Kconfig
index 61d09e0..4936dcb1 100644
--- a/drivers/media/pci/bt8xx/Kconfig
+++ b/drivers/media/pci/bt8xx/Kconfig
@@ -11,6 +11,7 @@ config VIDEO_BT848
 	select VIDEO_TVAUDIO if MEDIA_SUBDRV_AUTOSELECT
 	select VIDEO_TDA7432 if MEDIA_SUBDRV_AUTOSELECT
 	select VIDEO_SAA6588 if MEDIA_SUBDRV_AUTOSELECT
+	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
diff --git a/drivers/media/pci/bt8xx/bttv-cards.c b/drivers/media/pci/bt8xx/bttv-cards.c
index d85cb0a..4a444e8 100644
--- a/drivers/media/pci/bt8xx/bttv-cards.c
+++ b/drivers/media/pci/bt8xx/bttv-cards.c
@@ -83,8 +83,7 @@ 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);
@@ -3053,12 +3052,12 @@ 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;
@@ -3072,7 +3071,7 @@ 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 */
@@ -3347,12 +3346,12 @@ 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:
@@ -3710,33 +3709,112 @@ static void hauppauge_eeprom(struct bttv *btv)
 		btv->radio_uses_msp_demodulator = 1;
 }
 
-static int terratec_active_radio_upgrade(struct bttv *btv)
+/* ----------------------------------------------------------------------- */
+
+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)
 {
-	int freq;
+	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)
+{
 	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;
 }
 
@@ -4167,181 +4245,6 @@ init_RTV24 (struct bttv *btv)
 	pr_info("%d: Adlink RTV-24 initialisation complete\n", btv->c.nr);
 }
 
-
-
-/* ----------------------------------------------------------------------- */
-/* Miro Pro radio stuff -- the tea5757 is connected to some GPIO ports     */
-/*
- * Copyright (c) 1999 Csaba Halasz <qgehali@xxxxxxxxxxxxxx>
- * This code is placed under the terms of the GNU General Public License
- *
- * Brutally hacked by Dan Sheridan <dan.sheridan@xxxxxxxxxxxxxx> 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
diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c
index a3b1ee9..51ffbc1 100644
--- a/drivers/media/pci/bt8xx/bttv-driver.c
+++ b/drivers/media/pci/bt8xx/bttv-driver.c
@@ -1875,8 +1875,10 @@ 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;
 	}
diff --git a/drivers/media/pci/bt8xx/bttvp.h b/drivers/media/pci/bt8xx/bttvp.h
index 6eefb59..157af4e 100644
--- a/drivers/media/pci/bt8xx/bttvp.h
+++ b/drivers/media/pci/bt8xx/bttvp.h
@@ -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"
@@ -361,6 +362,10 @@ struct bttv_suspend_state {
 	struct bttv_buffer     *vbi;
 };
 
+struct bttv_tea575x_gpio {
+	u8 data, clk, wren, most;
+};
+
 struct bttv {
 	struct bttv_core c;
 
@@ -447,12 +452,9 @@ 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;
diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index 6ecdc39..992ebe3 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -10,11 +10,11 @@ menuconfig RADIO_ADAPTERS
 	---help---
 	  Say Y here to enable selecting AM/FM radio adapters.
 
-if RADIO_ADAPTERS && VIDEO_V4L2
-
 config RADIO_TEA575X
 	tristate
 
+if RADIO_ADAPTERS && VIDEO_V4L2
+
 config RADIO_SI470X
 	bool "Silicon Labs Si470x FM Radio Receiver support"
 	depends on VIDEO_V4L2
-- 
Ondrej Zary

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Input]     [Video for Linux]     [Gstreamer Embedded]     [Mplayer Users]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux