1 files changed, 522 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb/friio.c b/drivers/media/usb/dvb-usb/friio.c
new file mode 100644
index 000000000000..474a17e4db0c
--- /dev/null
+++ b/drivers/media/usb/dvb-usb/friio.c
@@ -0,0 +1,522 @@
+/* DVB USB compliant Linux driver for the Friio USB2.0 ISDB-T receiver.
+ *
+ * Copyright (C) 2009 Akihiro Tsukada <tskd2@yahoo.co.jp>
+ *
+ * This module is based off the the gl861 and vp702x modules.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, version 2.
+ *
+ * see Documentation/dvb/README.dvb-usb for more information
+ */
+#include "friio.h"
+
+/* debug */
+int dvb_usb_friio_debug;
+module_param_named(debug, dvb_usb_friio_debug, int, 0644);
+MODULE_PARM_DESC(debug,
+		 "set debugging level (1=info,2=xfer,4=rc,8=fe (or-able))."
+		 DVB_USB_DEBUG_STATUS);
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+/**
+ * Indirect I2C access to the PLL via FE.
+ * whole I2C protocol data to the PLL is sent via the FE's I2C register.
+ * This is done by a control msg to the FE with the I2C data accompanied, and
+ * a specific USB request number is assigned for that purpose.
+ *
+ * this func sends wbuf[1..] to the I2C register wbuf[0] at addr (= at FE).
+ * TODO: refoctored, smarter i2c functions.
+ */
+static int gl861_i2c_ctrlmsg_data(struct dvb_usb_device *d, u8 addr,
+				  u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
+{
+	u16 index = wbuf[0];	/* must be JDVBT90502_2ND_I2C_REG(=0xFE) */
+	u16 value = addr << (8 + 1);
+	int wo = (rbuf == NULL || rlen == 0);	/* write only */
+	u8 req, type;
+
+	deb_xfer("write to PLL:0x%02x via FE reg:0x%02x, len:%d\n",
+		 wbuf[1], wbuf[0], wlen - 1);
+
+	if (wo && wlen >= 2) {
+		req = GL861_REQ_I2C_DATA_CTRL_WRITE;
+		type = GL861_WRITE;
+		udelay(20);
+		return usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
+				       req, type, value, index,
+				       &wbuf[1], wlen - 1, 2000);
+	}
+
+	deb_xfer("not supported ctrl-msg, aborting.");
+	return -EINVAL;
+}
+
+/* normal I2C access (without extra data arguments).
+ * write to the register wbuf[0] at I2C address addr with the value wbuf[1],
+ *  or read from the register wbuf[0].
+ * register address can be 16bit (wbuf[2]<<8 | wbuf[0]) if wlen==3
+ */
+static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr,
+			 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
+{
+	u16 index;
+	u16 value = addr << (8 + 1);
+	int wo = (rbuf == NULL || rlen == 0);	/* write-only */
+	u8 req, type;
+	unsigned int pipe;
+
+	/* special case for the indirect I2C access to the PLL via FE, */
+	if (addr == friio_fe_config.demod_address &&
+	    wbuf[0] == JDVBT90502_2ND_I2C_REG)
+		return gl861_i2c_ctrlmsg_data(d, addr, wbuf, wlen, rbuf, rlen);
+
+	if (wo) {
+		req = GL861_REQ_I2C_WRITE;
+		type = GL861_WRITE;
+		pipe = usb_sndctrlpipe(d->udev, 0);
+	} else {		/* rw */
+		req = GL861_REQ_I2C_READ;
+		type = GL861_READ;
+		pipe = usb_rcvctrlpipe(d->udev, 0);
+	}
+
+	switch (wlen) {
+	case 1:
+		index = wbuf[0];
+		break;
+	case 2:
+		index = wbuf[0];
+		value = value + wbuf[1];
+		break;
+	case 3:
+		/* special case for 16bit register-address */
+		index = (wbuf[2] << 8) | wbuf[0];
+		value = value + wbuf[1];
+		break;
+	default:
+		deb_xfer("wlen = %x, aborting.", wlen);
+		return -EINVAL;
+	}
+	msleep(1);
+	return usb_control_msg(d->udev, pipe, req, type,
+			       value, index, rbuf, rlen, 2000);
+}
+
+/* I2C */
+static int gl861_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
+			  int num)
+{
+	struct dvb_usb_device *d = i2c_get_adapdata(adap);
+	int i;
+
+
+	if (num > 2)
+		return -EINVAL;
+
+	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+		return -EAGAIN;
+
+	for (i = 0; i < num; i++) {
+		/* write/read request */
+		if (i + 1 < num && (msg[i + 1].flags & I2C_M_RD)) {
+			if (gl861_i2c_msg(d, msg[i].addr,
+					  msg[i].buf, msg[i].len,
+					  msg[i + 1].buf, msg[i + 1].len) < 0)
+				break;
+			i++;
+		} else
+			if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf,
+					  msg[i].len, NULL, 0) < 0)
+				break;
+	}
+
+	mutex_unlock(&d->i2c_mutex);
+	return i;
+}
+
+static u32 gl861_i2c_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_I2C;
+}
+
+static int friio_ext_ctl(struct dvb_usb_adapter *adap,
+			 u32 sat_color, int lnb_on)
+{
+	int i;
+	int ret;
+	struct i2c_msg msg;
+	u8 *buf;
+	u32 mask;
+	u8 lnb = (lnb_on) ? FRIIO_CTL_LNB : 0;
+
+	buf = kmalloc(2, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	msg.addr = 0x00;
+	msg.flags = 0;
+	msg.len = 2;
+	msg.buf = buf;
+
+	buf[0] = 0x00;
+
+	/* send 2bit header (&B10) */
+	buf[1] = lnb | FRIIO_CTL_LED | FRIIO_CTL_STROBE;
+	ret = gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
+	buf[1] |= FRIIO_CTL_CLK;
+	ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
+
+	buf[1] = lnb | FRIIO_CTL_STROBE;
+	ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
+	buf[1] |= FRIIO_CTL_CLK;
+	ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
+
+	/* send 32bit(satur, R, G, B) data in serial */
+	mask = 1 << 31;
+	for (i = 0; i < 32; i++) {
+		buf[1] = lnb | FRIIO_CTL_STROBE;
+		if (sat_color & mask)
+			buf[1] |= FRIIO_CTL_LED;
+		ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
+		buf[1] |= FRIIO_CTL_CLK;
+		ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
+		mask >>= 1;
+	}
+
+	/* set the strobe off */
+	buf[1] = lnb;
+	ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
+	buf[1] |= FRIIO_CTL_CLK;
+	ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
+
+	kfree(buf);
+	return (ret == 70);
+}
+
+
+static int friio_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff);
+
+/* TODO: move these init cmds to the FE's init routine? */
+static u8 streaming_init_cmds[][2] = {
+	{0x33, 0x08},
+	{0x37, 0x40},
+	{0x3A, 0x1F},
+	{0x3B, 0xFF},
+	{0x3C, 0x1F},
+	{0x3D, 0xFF},
+	{0x38, 0x00},
+	{0x35, 0x00},
+	{0x39, 0x00},
+	{0x36, 0x00},
+};
+static int cmdlen = sizeof(streaming_init_cmds) / 2;
+
+/*
+ * Command sequence in this init function is a replay
+ *  of the captured USB commands from the Windows proprietary driver.
+ */
+static int friio_initialize(struct dvb_usb_device *d)
+{
+	int ret;
+	int i;
+	int retry = 0;
+	u8 *rbuf, *wbuf;
+
+	deb_info("%s called.\n", __func__);
+
+	wbuf = kmalloc(3, GFP_KERNEL);
+	if (!wbuf)
+		return -ENOMEM;
+
+	rbuf = kmalloc(2, GFP_KERNEL);
+	if (!rbuf) {
+		kfree(wbuf);
+		return -ENOMEM;
+	}
+
+	/* use gl861_i2c_msg instead of gl861_i2c_xfer(), */
+	/* because the i2c device is not set up yet. */
+	wbuf[0] = 0x11;
+	wbuf[1] = 0x02;
+	ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
+	if (ret < 0)
+		goto error;
+	msleep(2);
+
+	wbuf[0] = 0x11;
+	wbuf[1] = 0x00;
+	ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
+	if (ret < 0)
+		goto error;
+	msleep(1);
+
+	/* following msgs should be in the FE's init code? */
+	/* cmd sequence to identify the device type? (friio black/white) */
+	wbuf[0] = 0x03;
+	wbuf[1] = 0x80;
+	/* can't use gl861_i2c_cmd, as the register-addr is 16bit(0x0100) */
+	ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
+			      GL861_REQ_I2C_DATA_CTRL_WRITE, GL861_WRITE,
+			      0x1200, 0x0100, wbuf, 2, 2000);
+	if (ret < 0)
+		goto error;
+
+	msleep(2);
+	wbuf[0] = 0x00;
+	wbuf[2] = 0x01;		/* reg.0x0100 */
+	wbuf[1] = 0x00;
+	ret = gl861_i2c_msg(d, 0x12 >> 1, wbuf, 3, rbuf, 2);
+	/* my Friio White returns 0xffff. */
+	if (ret < 0 || rbuf[0] != 0xff || rbuf[1] != 0xff)
+		goto error;
+
+	msleep(2);
+	wbuf[0] = 0x03;
+	wbuf[1] = 0x80;
+	ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
+			      GL861_REQ_I2C_DATA_CTRL_WRITE, GL861_WRITE,
+			      0x9000, 0x0100, wbuf, 2, 2000);
+	if (ret < 0)
+		goto error;
+
+	msleep(2);
+	wbuf[0] = 0x00;
+	wbuf[2] = 0x01;		/* reg.0x0100 */
+	wbuf[1] = 0x00;
+	ret = gl861_i2c_msg(d, 0x90 >> 1, wbuf, 3, rbuf, 2);
+	/* my Friio White returns 0xffff again. */
+	if (ret < 0 || rbuf[0] != 0xff || rbuf[1] != 0xff)
+		goto error;
+
+	msleep(1);
+
+restart:
+	/* ============ start DEMOD init cmds ================== */
+	/* read PLL status to clear the POR bit */
+	wbuf[0] = JDVBT90502_2ND_I2C_REG;
+	wbuf[1] = (FRIIO_PLL_ADDR << 1) + 1;	/* +1 for reading */
+	ret = gl861_i2c_msg(d, FRIIO_DEMOD_ADDR, wbuf, 2, NULL, 0);
+	if (ret < 0)
+		goto error;
+
+	msleep(5);
+	/* note: DEMODULATOR has 16bit register-address. */
+	wbuf[0] = 0x00;
+	wbuf[2] = 0x01;		/* reg addr: 0x0100 */
+	wbuf[1] = 0x00;		/* val: not used */
+	ret = gl861_i2c_msg(d, FRIIO_DEMOD_ADDR, wbuf, 3, rbuf, 1);
+	if (ret < 0)
+		goto error;
+/*
+	msleep(1);
+	wbuf[0] = 0x80;
+	wbuf[1] = 0x00;
+	ret = gl861_i2c_msg(d, FRIIO_DEMOD_ADDR, wbuf, 2, rbuf, 1);
+	if (ret < 0)
+		goto error;
+ */
+	if (rbuf[0] & 0x80) {	/* still in PowerOnReset state? */
+		if (++retry > 3) {
+			deb_info("failed to get the correct"
+				 " FE demod status:0x%02x\n", rbuf[0]);
+			goto error;
+		}
+		msleep(100);
+		goto restart;
+	}
+
+	/* TODO: check return value in rbuf */
+	/* =========== end DEMOD init cmds ===================== */
+	msleep(1);
+
+	wbuf[0] = 0x30;
+	wbuf[1] = 0x04;
+	ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
+	if (ret < 0)
+		goto error;
+
+	msleep(2);
+	/* following 2 cmds unnecessary? */
+	wbuf[0] = 0x00;
+	wbuf[1] = 0x01;
+	ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
+	if (ret < 0)
+		goto error;
+
+	wbuf[0] = 0x06;
+	wbuf[1] = 0x0F;
+	ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
+	if (ret < 0)
+		goto error;
+
+	/* some streaming ctl cmds (maybe) */
+	msleep(10);
+	for (i = 0; i < cmdlen; i++) {
+		ret = gl861_i2c_msg(d, 0x00, streaming_init_cmds[i], 2,
+				    NULL, 0);
+		if (ret < 0)
+			goto error;
+		msleep(1);
+	}
+	msleep(20);
+
+	/* change the LED color etc. */
+	ret = friio_streaming_ctrl(&d->adapter[0], 0);
+	if (ret < 0)
+		goto error;
+
+	return 0;
+
+error:
+	kfree(wbuf);
+	kfree(rbuf);
+	deb_info("%s:ret == %d\n", __func__, ret);
+	return -EIO;
+}
+
+/* Callbacks for DVB USB */
+
+static int friio_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
+{
+	int ret;
+
+	deb_info("%s called.(%d)\n", __func__, onoff);
+
+	/* set the LED color and saturation (and LNB on) */
+	if (onoff)
+		ret = friio_ext_ctl(adap, 0x6400ff64, 1);
+	else
+		ret = friio_ext_ctl(adap, 0x96ff00ff, 1);
+
+	if (ret != 1) {
+		deb_info("%s failed to send cmdx. ret==%d\n", __func__, ret);
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+static int friio_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	if (friio_initialize(adap->dev) < 0)
+		return -EIO;
+
+	adap->fe_adap[0].fe = jdvbt90502_attach(adap->dev);
+	if (adap->fe_adap[0].fe == NULL)
+		return -EIO;
+
+	return 0;
+}
+
+/* DVB USB Driver stuff */
+static struct dvb_usb_device_properties friio_properties;
+
+static int friio_probe(struct usb_interface *intf,
+		       const struct usb_device_id *id)
+{
+	struct dvb_usb_device *d;
+	struct usb_host_interface *alt;
+	int ret;
+
+	if (intf->num_altsetting < GL861_ALTSETTING_COUNT)
+		return -ENODEV;
+
+	alt = usb_altnum_to_altsetting(intf, FRIIO_BULK_ALTSETTING);
+	if (alt == NULL) {
+		deb_rc("not alt found!\n");
+		return -ENODEV;
+	}
+	ret = usb_set_interface(interface_to_usbdev(intf),
+				alt->desc.bInterfaceNumber,
+				alt->desc.bAlternateSetting);
+	if (ret != 0) {
+		deb_rc("failed to set alt-setting!\n");
+		return ret;
+	}
+
+	ret = dvb_usb_device_init(intf, &friio_properties,
+				  THIS_MODULE, &d, adapter_nr);
+	if (ret == 0)
+		friio_streaming_ctrl(&d->adapter[0], 1);
+
+	return ret;
+}
+
+
+struct jdvbt90502_config friio_fe_config = {
+	.demod_address = FRIIO_DEMOD_ADDR,
+	.pll_address = FRIIO_PLL_ADDR,
+};
+
+static struct i2c_algorithm gl861_i2c_algo = {
+	.master_xfer   = gl861_i2c_xfer,
+	.functionality = gl861_i2c_func,
+};
+
+static struct usb_device_id friio_table[] = {
+	{ USB_DEVICE(USB_VID_774, USB_PID_FRIIO_WHITE) },
+	{ }		/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, friio_table);
+
+
+static struct dvb_usb_device_properties friio_properties = {
+	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
+	.usb_ctrl = DEVICE_SPECIFIC,
+
+	.size_of_priv = 0,
+
+	.num_adapters = 1,
+	.adapter = {
+		/* caps:0 =>  no pid filter, 188B TS packet */
+		/* GL861 has a HW pid filter, but no info available. */
+		{
+		.num_frontends = 1,
+		.fe = {{
+			.caps  = 0,
+
+			.frontend_attach  = friio_frontend_attach,
+			.streaming_ctrl = friio_streaming_ctrl,
+
+			.stream = {
+				.type = USB_BULK,
+				/* count <= MAX_NO_URBS_FOR_DATA_STREAM(10) */
+				.count = 8,
+				.endpoint = 0x01,
+				.u = {
+					/* GL861 has 6KB buf inside */
+					.bulk = {
+						.buffersize = 16384,
+					}
+				}
+			},
+		}},
+		}
+	},
+	.i2c_algo = &gl861_i2c_algo,
+
+	.num_device_descs = 1,
+	.devices = {
+		{
+			.name = "774 Friio ISDB-T USB2.0",
+			.cold_ids = { NULL },
+			.warm_ids = { &friio_table[0], NULL },
+		},
+	}
+};
+
+static struct usb_driver friio_driver = {
+	.name		= "dvb_usb_friio",
+	.probe		= friio_probe,
+	.disconnect	= dvb_usb_device_exit,
+	.id_table	= friio_table,
+};
+
+module_usb_driver(friio_driver);
+
+MODULE_AUTHOR("Akihiro Tsukada <tskd2@yahoo.co.jp>");
+MODULE_DESCRIPTION("Driver for Friio ISDB-T USB2.0 Receiver");
+MODULE_VERSION("0.2");
+MODULE_LICENSE("GPL");