tea5767.c, Makefile, tuner-core.c, tuner-simple.c, tuner.h:

        - Support for radio chip tea5767hn included.
        - It is used on several TV+FM cards, like cards with Tvision
tuners (maybe also Tenna?).
	- This chip is always at I2C address 0xC0.

1 files changed, 247 insertions, 0 deletions

diff --git a/linux/drivers/media/video/tea5767.c b/linux/drivers/media/video/tea5767.c
new file mode 100644
index 000000000..e49a53a1b
--- /dev/null
+++ b/linux/drivers/media/video/tea5767.c
@@ -0,0 +1,247 @@
+/*
+ * For Philips TEA5767 FM Chip used on some TV Cards like Prolink Pixelview
+ * I2C address is allways 0xC0.
+ *
+ * $Id: tea5767.c,v 1.1 2005/06/05 17:44:04 mchehab Exp $
+ *
+ * Copyright (c) 2005 Mauro Carvalho Chehab (mchehab@brturbo.com.br)
+ * This code is placed under the terms of the GNU General Public License
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/videodev.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
+#include "tuner.h"
+#include "i2c-compat.h"
+#else
+#include <media/tuner.h>
+#endif
+
+/* Write mode register values */
+
+/* First register */
+#define TEA5767_MUTE		0x80 /* Mutes output */
+#define TEA5767_SEARCH		0x40 /* Activates station search */
+/* Bits 0-5 for divider MSB */
+
+/* Second register */
+/* Bits 0-7 for divider LSB */
+
+/* Third register */
+
+/* Station search from botton to up */
+#define TEA5767_SEARCH_UP	0x80 
+
+/* Searches with ADC output = 10 */
+#define TEA5767_SRCH_HIGH_LVL	0x60 
+
+/* Searches with ADC output = 10 */
+#define TEA5767_SRCH_MID_LVL	0x40
+
+/* Searches with ADC output = 5 */
+#define TEA5767_SRCH_LOW_LVL	0x20
+
+/* if on, div=4*(Frf+Fif)/Fref otherwise, div=4*(Frf-Fif)/Freq) */
+#define TEA5767_HIGH_LO_INJECT	0x10
+
+/* Disable stereo */
+#define TEA5767_MONO		0x08 
+
+/* Disable right channel and turns to mono */
+#define TEA5767_MUTE_RIGHT	0x04
+
+/* Disable left channel and turns to mono */
+#define TEA5767_MUTE_LEFT	0x02
+
+#define TEA5767_PORT1_HIGH	0x01
+
+/* Forth register */
+#define TEA5767_PORT2_HIGH	0x80
+/* Chips stops working. Only I2C bus remains on */
+#define TEA5767_STDBY		0x40
+
+/* Japan freq (76-108 MHz. If disabled, 87.5-108 MHz */
+#define TEA5767_JAPAN_BAND	0x20 
+
+/* Unselected means 32.768 KHz freq as reference. Otherwise Xtal at 13 MHz */
+#define TEA5767_XTAL_32768	0x10
+
+/* Cuts weak signals */
+#define TEA5767_SOFT_MUTE	0x08
+
+/* Activates high cut control */
+#define TEA5767_HIGH_CUT_CTRL	0x04
+
+/* Activates stereo noise control */
+#define TEA5767_ST_NOISE_CTL	0x02
+
+/* If activate PORT 1 indicates SEARCH or else it is used as PORT1 */
+#define TEA5767_SRCH_IND	0x01
+
+/* Fiveth register */
+
+/* By activating, it will use Xtal at 13 MHz as reference for divider */
+#define TEA5767_PLLREF_ENABLE	0x80
+
+/* By activating, deemphasis=50, or else, deemphasis of 50us */
+#define TEA5767_DEEMPH_75	0X40
+/* Read mode register values */
+/* First register */
+#define TEA5767_READY_FLAG_MASK	0x80
+#define TEA5767_BAND_LIMIT_MASK	0X40
+/* Bits 0-5 for divider MSB after search or preset */
+
+/* Second register */
+/* Bits 0-7 for divider LSB after search or preset */
+
+/* Third register */
+#define TEA5767_STEREO_MASK	0x80
+#define TEA5767_IF_CNTR_MASK	0x7f
+
+/* Four register */
+#define TEA5767_ADC_LEVEL_MASK	0xf0
+
+/* should be 0 */
+#define TEA5767_CHIP_ID_MASK	0x0f
+
+/* Fiveth register */
+/* Reserved for future extensions */
+#define TEA5767_RESERVED_MASK	0xff
+
+
+enum v4l_radio_tuner {
+	RADIO_TUNER_UNSET	= 0,
+	TEA5767_HIGH_LO_32768	= 1,
+	TEA5767_LOW_LO_32768	= 2,
+	TEA5767_HIGH_LO_13MHz	= 3,
+	TEA5767_LOW_LO_13MHz	= 4,
+};
+
+static void set_tv_freq(struct i2c_client *c, unsigned int freq)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+
+	tuner_warn("This tuner doesn't support TV freq.\n");
+}
+
+static void set_radio_freq(struct i2c_client *c, unsigned int frq)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+        unsigned char buffer[5];
+	unsigned div;
+	int rc;
+
+	buffer[2] = TEA5767_PORT1_HIGH;
+	buffer[3] = TEA5767_PORT2_HIGH | TEA5767_HIGH_CUT_CTRL | TEA5767_ST_NOISE_CTL;
+	buffer[4]=0;
+	
+	switch (t->type) {
+
+	case TEA5767_HIGH_LO_13MHz:
+		tuner_dbg("TEA5767 radio HIGH LO inject xtal @ 13 MHz\n");
+		buffer[2] |= TEA5767_HIGH_LO_INJECT;
+		buffer[4] |= TEA5767_PLLREF_ENABLE;
+		div = (frq*4000/16+225+25)/50;
+		break;
+	case TEA5767_LOW_LO_13MHz:
+		tuner_dbg("TEA5767 radio LOW LO inject xtal @ 13 MHz\n");
+		
+		buffer[4] |= TEA5767_PLLREF_ENABLE;
+		div = (frq*4000/16-225+25)/50;
+		break;
+	case TEA5767_LOW_LO_32768:
+		tuner_dbg("TEA5767 radio LOW LO inject xtal @ 32,768 MHz\n");
+		
+		buffer[3] |= TEA5767_XTAL_32768;
+		div = (1000*(frq*4000/16+225)+16384)/32768;
+		break;
+	case TEA5767_HIGH_LO_32768:
+	default:
+		tuner_dbg("TEA5767 radio HIGH LO inject xtal @ 32,768 MHz\n");
+		
+		buffer[2] |= TEA5767_HIGH_LO_INJECT;
+		buffer[3] |= TEA5767_XTAL_32768;
+		div = (1000*(frq*4000/16+225)+16384)/32768;
+		break;
+	}
+        buffer[0] = (div>>8) & 0x3f;
+        buffer[1] = div      & 0xff;
+
+	tuner_dbg("TEA5767 radio SET 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\n",
+	       buffer[0],buffer[1],buffer[2],buffer[3],buffer[4]);
+
+        if (5 != (rc = i2c_master_send(c,buffer,5)))
+		tuner_warn("i2c i/o error: rc == %d (should be 5)\n",rc);
+}
+
+static int tea5767_signal(struct i2c_client *c)
+{
+	unsigned char buffer[5];
+	int rc;
+	struct tuner *t = i2c_get_clientdata(c);
+
+	memset(buffer,0,sizeof(buffer));
+        if (5 != (rc = i2c_master_recv(c,buffer,5)))
+                tuner_warn ( "i2c i/o error: rc == %d (should be 5)\n",rc);
+		
+	tuner_dbg("TEA5767 radio SIG GET 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\n",
+	       buffer[0],buffer[1],buffer[2],buffer[3],buffer[4]);
+
+	return ( (buffer[0] & TEA5767_READY_FLAG_MASK) ? 0x7<<13 : 0);
+}
+
+static int tea5767_stereo(struct i2c_client *c)
+{
+	unsigned char buffer[5];
+	int rc;
+	struct tuner *t = i2c_get_clientdata(c);
+
+	memset(buffer,0,sizeof(buffer));
+        if (5 != (rc = i2c_master_recv(c,buffer,5)))
+                tuner_warn ( "i2c i/o error: rc == %d (should be 5)\n",rc);
+	
+	tuner_dbg("TEA5767 radio ST GET 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\n",
+	       buffer[0],buffer[1],buffer[2],buffer[3],buffer[4]);
+
+	return ( (buffer[2] & TEA5767_STEREO_MASK) ? 0x10: 0);
+}
+
+int tea5767_tuner_init(struct i2c_client *c)
+{
+	/* TEA5767 is always on 0xC0, according with Philips datasheet */
+	struct tuner_addr tun_addr = { V4L2_TUNER_RADIO, 0xc0>>1 };
+	
+	struct tuner *t = i2c_get_clientdata(c);
+
+	 /***************************************************************************
+		HACKING FOR TESTING PURPOSES ONLY. Should have an option to configure
+	  ***************************************************************************/
+	t->type= TEA5767_HIGH_LO_32768;
+//	t->type= TEA5767_LOW_LO_32768;
+	strlcpy(c->name, "TEA5767", sizeof("TEA5767"));
+	tuner_info("type set to TEA5797\n");
+
+	if (c->driver->command) {
+		c->driver->command(c, TUNER_SET_ADDR, &tun_addr);
+	} else {
+		tuner_warn("TAE5797 Couldn't set Radio tuner I2C address to 0xc0\n");
+		return -1;
+	}
+	
+	t->tv_freq    = set_tv_freq;
+	t->radio_freq = set_radio_freq;
+	t->has_signal = tea5767_signal;
+	t->is_stereo  = tea5767_stereo;
+	return 0;
+}