V4L/DVB (6423): Add tuner-xc2028 driver

Add support for Xceive XC2028/XC3028 tuner driver

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 391 insertions, 0 deletions

diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c
new file mode 100644
index 000000000000..cfcc1fe68c5c
--- /dev/null
+++ b/drivers/media/video/tuner-xc2028.c
@@ -0,0 +1,391 @@
+/* tuner-xc2028
+ *
+ * Copyright (c) 2007 Mauro Carvalho Chehab (mchehab@infradead.org)
+ * This code is placed under the terms of the GNU General Public License v2
+ */
+
+#include <linux/i2c.h>
+#include <asm/div64.h>
+#include <linux/firmware.h>
+#include <linux/videodev.h>
+#include <linux/delay.h>
+#include "tuner-driver.h"
+#include "tuner-xc2028.h"
+
+/* Firmwares used on tm5600/tm6000 + xc2028/xc3028 */
+static const char *firmware_6M = "tm6000_xc3028_DTV_6M.fw";
+static const char *firmware_8M = "tm6000_xc3028_78M.fw";
+static const char *firmware_DK = "tm6000_xc3028_DK_PAL_MTS.fw";
+static const char *firmware_MN = "tm6000_xc3028_MN_BTSC.fw";
+
+struct xc2028_data {
+	v4l2_std_id	firm_type;	/* video stds supported by current firmware */
+	int		bandwidth;	/* Firmware bandwidth: 6M, 7M or 8M */
+	int		need_load_generic; /* The generic firmware were loaded? */
+};
+
+#define i2c_send(rc,c,buf,size)						\
+if (size != (rc = i2c_master_send(c, buf, size)))			\
+	tuner_warn("i2c output error: rc = %d (should be %d)\n",	\
+	rc, (int)size);
+
+#define i2c_rcv(rc,c,buf,size)						\
+if (size != (rc = i2c_master_recv(c, buf, size)))			\
+	tuner_warn("i2c input error: rc = %d (should be %d)\n",		\
+	rc, (int)size);
+
+#define send_seq(c, data...)						\
+{	int rc;								\
+	const static u8 _val[] = data;					\
+	if (sizeof(_val) !=						\
+				(rc = i2c_master_send 			\
+				(c, _val, sizeof(_val)))) {		\
+		printk(KERN_ERR "Error on line %d: %d\n",__LINE__,rc);	\
+		return;							\
+	}								\
+	msleep (10);							\
+}
+
+static int xc2028_get_reg(struct i2c_client *c, u16 reg)
+{
+	int rc;
+	unsigned char buf[1];
+	struct tuner *t = i2c_get_clientdata(c);
+
+	buf[0]= reg;
+
+	i2c_send(rc, c, buf, sizeof(buf));
+	if (rc<0)
+		return rc;
+
+	if (t->tuner_callback) {
+		rc = t->tuner_callback( c->adapter->algo_data,
+					XC2028_RESET_CLK, 0);
+		if (rc<0)
+			return rc;
+	}
+
+	i2c_rcv(rc, c, buf, 2);
+	if (rc<0)
+		return rc;
+
+	return (buf[1])|(buf[0]<<8);
+}
+
+static int load_firmware (struct i2c_client *c, const char *name)
+{
+	const struct firmware *fw=NULL;
+	struct tuner          *t = i2c_get_clientdata(c);
+	unsigned char         *p, *endp;
+	int                   len=0, rc=0;
+	static const char     firmware_ver[] = "tm6000/xcv v1";
+
+	tuner_info("Loading firmware %s\n", name);
+	rc = request_firmware(&fw, name, &c->dev);
+	if (rc < 0) {
+		tuner_info("Error %d while requesting firmware\n", rc);
+		return rc;
+	}
+	p=fw->data;
+	endp=p+fw->size;
+
+	if(fw->size==0) {
+		tuner_info("Error: firmware size is zero!\n");
+		rc=-EINVAL;
+		goto err;
+	}
+	if (fw->size<sizeof(firmware_ver)-1) {
+		/* Firmware is incorrect */
+		tuner_info("Error: firmware size is less than header (%d<%d)!\n",
+			   (int)fw->size,(int)sizeof(firmware_ver)-1);
+		rc=-EINVAL;
+		goto err;
+	}
+
+	if (memcmp(p,firmware_ver,sizeof(firmware_ver)-1)) {
+		/* Firmware is incorrect */
+		tuner_info("Error: firmware is not for tm5600/6000 + Xcv2028/3028!\n");
+		rc=-EINVAL;
+		goto err;
+	}
+	p+=sizeof(firmware_ver)-1;
+
+	while(p<endp) {
+		if ((*p) & 0x80) {
+			/* Special callback command received */
+			rc = t->tuner_callback(c->adapter->algo_data,
+					     XC2028_TUNER_RESET, (*p)&0x7f);
+			if (rc<0) {
+				tuner_info("Error at RESET code %d\n",
+								(*p)&0x7f);
+				goto err;
+			}
+			p++;
+			continue;
+		}
+		len=*p;
+		p++;
+		if (p+len+1>endp) {
+			/* Firmware is incorrect */
+			tuner_info("Error: firmware is truncated!\n");
+			rc=-EINVAL;
+			goto err;
+		}
+		if (len<=0) {
+			tuner_info("Error: firmware file is corrupted!\n");
+			rc=-EINVAL;
+			goto err;
+		}
+
+		i2c_send(rc, c, p, len);
+		if (rc<0)
+			goto err;
+		p+=len;
+
+		if (*p)
+			msleep(*p);
+		p++;
+	}
+
+
+err:
+	release_firmware(fw);
+
+	return rc;
+}
+
+static int check_firmware(struct i2c_client *c)
+{
+	int			rc, version;
+	struct tuner		*t = i2c_get_clientdata(c);
+	struct xc2028_data	*xc2028 = t->priv;
+	const char		*name;
+
+	if (!t->tuner_callback) {
+		printk(KERN_ERR "xc2028: need tuner_callback to load firmware\n");
+		return -EINVAL;
+	}
+
+	if (xc2028->need_load_generic) {
+		if (xc2028->bandwidth==6)
+			name = firmware_6M;
+		else
+			name = firmware_8M;
+
+		/* Reset is needed before loading firmware */
+		rc = t->tuner_callback(c->adapter->algo_data,
+				     XC2028_TUNER_RESET, 0);
+		if (rc<0)
+			return rc;
+
+		rc = load_firmware(c,name);
+		if (rc<0)
+			return rc;
+
+		xc2028->need_load_generic=0;
+		xc2028->firm_type=0;
+	}
+
+	if (xc2028->firm_type & t->std)
+		return 0;
+
+	if (t->std & V4L2_STD_MN)
+		name=firmware_MN;
+	else
+		name=firmware_DK;
+
+	rc = load_firmware(c,name);
+	if (rc<0)
+		return rc;
+
+	version = xc2028_get_reg(c, 0x4);
+	tuner_info("Firmware version is %d.%d\n",
+					(version>>4)&0x0f,(version)&0x0f);
+
+	xc2028->firm_type=t->std;
+
+	return 0;
+}
+
+static int xc2028_signal(struct i2c_client *c)
+{
+	int lock, signal;
+
+	if (check_firmware(c)<0)
+		return 0;
+
+	lock = xc2028_get_reg(c, 0x2);
+	if (lock<=0)
+		return lock;
+
+	/* Frequency is locked. Return signal quality */
+
+	signal = xc2028_get_reg(c, 0x40);
+
+	if(signal<=0)
+		return lock;
+
+	return signal;
+}
+
+#define DIV 15625
+
+static void set_tv_freq(struct i2c_client *c, unsigned int freq)
+{
+	int           rc;
+	unsigned char buf[5];
+	struct tuner  *t  = i2c_get_clientdata(c);
+	unsigned long div = (freq*62500l+DIV/2)/DIV;
+
+	if (check_firmware(c)<0)
+		return;
+
+	/* Reset GPIO 1 */
+	if (t->tuner_callback) {
+		rc = t->tuner_callback( c->adapter->algo_data,
+					XC2028_TUNER_RESET, 0);
+		if (rc<0)
+			return;
+	}
+	msleep(10);
+
+	send_seq (c, {0x12, 0x39});
+	send_seq (c, {0x0c, 0x80, 0xf0, 0xf7, 0x3e, 0x75, 0xc1, 0x8a, 0xe4});
+	send_seq (c, {0x0c, 0x02, 0x00});
+	send_seq (c, {0x05, 0x0f, 0xee, 0xaa, 0x5f, 0xea, 0x90});
+	send_seq (c, {0x06, 0x00, 0x0a, 0x4d, 0x8c, 0xf2, 0xd8, 0xcf, 0x30});
+	send_seq (c, {0x06, 0x79, 0x9f});
+	send_seq (c, {0x0b, 0x0d, 0xa4, 0x6c});
+	send_seq (c, {0x0a, 0x01, 0x67, 0x24, 0x40, 0x08, 0xc3, 0x20, 0x10});
+	send_seq (c, {0x0a, 0x64, 0x3c, 0xfa, 0xf7, 0xe1, 0x0c, 0x2c});
+	send_seq (c, {0x09, 0x0b});
+	send_seq (c, {0x10, 0x13});
+	send_seq (c, {0x16, 0x12});
+	send_seq (c, {0x1f, 0x02});
+	send_seq (c, {0x21, 0x02});
+	send_seq (c, {0x01, 0x02});
+	send_seq (c, {0x2b, 0x10});
+	send_seq (c, {0x02, 0x02});
+	send_seq (c, {0x02, 0x03});
+	send_seq (c, {0x00, 0x8c});
+
+	send_seq (c, {0x00, 0x01, 0x00, 0x00});
+	send_seq (c, {0x00, 0xcc, 0x20, 0x06});
+	send_seq (c, {0x2b, 0x1a});
+	send_seq (c, {0x2b, 0x1b});
+	send_seq (c, {0x14, 0x01, 0x1b, 0x19, 0xb5, 0x29, 0xab, 0x09, 0x55});
+	send_seq (c, {0x14, 0x44, 0x05, 0x65});
+	send_seq (c, {0x13, 0x18, 0x08, 0x00, 0x00, 0x6c, 0x18, 0x16, 0x8c});
+	send_seq (c, {0x13, 0x49, 0x2a, 0xab});
+	send_seq (c, {0x0d, 0x01, 0x4b, 0x03, 0x97, 0x55, 0xc7, 0xd7, 0x00});
+	send_seq (c, {0x0d, 0xa1, 0xeb, 0x8f, 0x5c});
+	send_seq (c, {0x1a, 0x00, 0x00, 0x16, 0x8a, 0x40, 0x00, 0x00, 0x00, 0x20});
+	send_seq (c, {0x2d, 0x01});
+	send_seq (c, {0x18, 0x00});
+	send_seq (c, {0x1b, 0x0d, 0x86, 0x51, 0xd2, 0x35, 0xa4, 0x92, 0xa5});
+	send_seq (c, {0x1b, 0xb5, 0x25, 0x65});
+	send_seq (c, {0x1d, 0x00});
+	send_seq (c, {0x0f, 0x00, 0x29, 0x56, 0xb0, 0x00, 0xb6});
+	send_seq (c, {0x20, 0x00});
+	send_seq (c, {0x1e, 0x09, 0x02, 0x5b, 0x6c, 0x00, 0x4b, 0x81, 0x56});
+	send_seq (c, {0x1e, 0x46, 0x69, 0x0b});
+	send_seq (c, {0x22, 0x32});
+	send_seq (c, {0x23, 0x0a});
+	send_seq (c, {0x25, 0x00, 0x09, 0x90, 0x09, 0x06, 0x64, 0x02, 0x41});
+	send_seq (c, {0x26, 0xcc});
+	send_seq (c, {0x29, 0x40});
+	send_seq (c, {0x21, 0x03});
+	send_seq (c, {0x00, 0x8c});
+	send_seq (c, {0x00, 0x00, 0x00, 0x00});
+
+	/* CMD= Set frequency */
+	send_seq(c, {0x00, 0x02, 0x00, 0x00});
+	if (t->tuner_callback) {
+		rc = t->tuner_callback( c->adapter->algo_data,
+					XC2028_RESET_CLK, 1);
+		if (rc<0)
+			return;
+	}
+
+	msleep(10);
+//	send_seq(c, {0x00, 0x00, 0x10, 0xd0, 0x00});
+//	msleep(100);
+	buf[0]= 0xff & (div>>24);
+	buf[1]= 0xff & (div>>16);
+	buf[2]= 0xff & (div>>8);
+	buf[3]= 0xff & (div);
+	buf[4]= 0;
+
+	i2c_send(rc, c, buf, sizeof(buf));
+	if (rc<0)
+		return;
+	msleep(100);
+
+	printk("divider= %02x %02x %02x %02x (freq=%d.%02d)\n",
+		 buf[1],buf[2],buf[3],buf[4],
+		 freq / 16, freq % 16 * 100 / 16);
+//	printk("signal=%d\n",xc2028_signal(c));
+}
+
+
+static void xc2028_release(struct i2c_client *c)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+
+	kfree(t->priv);
+	t->priv = NULL;
+}
+
+static struct tuner_operations tea5767_tuner_ops = {
+	.set_tv_freq    = set_tv_freq,
+	.has_signal     = xc2028_signal,
+	.release        = xc2028_release,
+//	.is_stereo      = xc2028_stereo,
+};
+
+
+static int init=0;
+
+int xc2028_tuner_init(struct i2c_client *c)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+	int version = xc2028_get_reg(c, 0x4);
+	int prd_id = xc2028_get_reg(c, 0x8);
+	struct xc2028_data *xc2028;
+
+	if (init) {
+		printk (KERN_ERR "Module already initialized!\n");
+		return 0;
+	}
+	init++;
+
+	xc2028 = kzalloc(sizeof(*xc2028), GFP_KERNEL);
+	if (!xc2028)
+		return -ENOMEM;
+	t->priv = xc2028;
+
+#ifdef HACK
+	xc2028->firm_type=1;
+	xc2028->bandwidth=6;
+#endif
+	xc2028->bandwidth=6;
+	xc2028->need_load_generic=1;
+
+	/* FIXME: Check where t->priv will be freed */
+
+	if (version<0)
+		version=0;
+
+	if (prd_id<0)
+		prd_id=0;
+
+	strlcpy(c->name, "xc2028", sizeof(c->name));
+	tuner_info("type set to %d (%s, hw ver=%d.%d, fw ver=%d.%d, id=0x%04x)\n",
+		   t->type, c->name,
+		   (version>>12)&0x0f,(version>>8)&0x0f,
+		   (version>>4)&0x0f,(version)&0x0f, prd_id);
+
+	memcpy(&t->ops, &tea5767_tuner_ops, sizeof(struct tuner_operations));
+
+	return 0;
+}