[net-next-2.6.git] / drivers / media / dvb / dvb-usb / dib0700_core.c

/* Linux driver for devices based on the DiBcom DiB0700 USB bridge
 *
 *	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.
 *
 *  Copyright (C) 2005-6 DiBcom, SA
 */
#include "dib0700.h"

/* debug */
int dvb_usb_dib0700_debug;
module_param_named(debug,dvb_usb_dib0700_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS);

int dvb_usb_dib0700_ir_proto = 1;
module_param(dvb_usb_dib0700_ir_proto, int, 0644);
MODULE_PARM_DESC(dvb_usb_dib0700_ir_proto, "set ir protocol (0=NEC, 1=RC5 (default), 2=RC6).");

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);


int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion,
			u32 *romversion, u32 *ramversion, u32 *fwtype)
{
	u8 b[16];
	int ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
				  REQUEST_GET_VERSION,
				  USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
				  b, sizeof(b), USB_CTRL_GET_TIMEOUT);
	*hwversion  = (b[0] << 24)  | (b[1] << 16)  | (b[2] << 8)  | b[3];
	*romversion = (b[4] << 24)  | (b[5] << 16)  | (b[6] << 8)  | b[7];
	*ramversion = (b[8] << 24)  | (b[9] << 16)  | (b[10] << 8) | b[11];
	*fwtype     = (b[12] << 24) | (b[13] << 16) | (b[14] << 8) | b[15];
	return ret;
}

/* expecting rx buffer: request data[0] data[1] ... data[2] */
static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen)
{
	int status;

	deb_data(">>> ");
	debug_dump(tx,txlen,deb_data);

	status = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev,0),
		tx[0], USB_TYPE_VENDOR | USB_DIR_OUT, 0, 0, tx, txlen,
		USB_CTRL_GET_TIMEOUT);

	if (status != txlen)
		deb_data("ep 0 write error (status = %d, len: %d)\n",status,txlen);

	return status < 0 ? status : 0;
}

/* expecting tx buffer: request data[0] ... data[n] (n <= 4) */
int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
{
	u16 index, value;
	int status;

	if (txlen < 2) {
		err("tx buffer length is smaller than 2. Makes no sense.");
		return -EINVAL;
	}
	if (txlen > 4) {
		err("tx buffer length is larger than 4. Not supported.");
		return -EINVAL;
	}

	deb_data(">>> ");
	debug_dump(tx,txlen,deb_data);

	value = ((txlen - 2) << 8) | tx[1];
	index = 0;
	if (txlen > 2)
		index |= (tx[2] << 8);
	if (txlen > 3)
		index |= tx[3];

	status = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev,0), tx[0],
			USB_TYPE_VENDOR | USB_DIR_IN, value, index, rx, rxlen,
			USB_CTRL_GET_TIMEOUT);

	if (status < 0)
		deb_info("ep 0 read error (status = %d)\n",status);

	deb_data("<<< ");
	debug_dump(rx,rxlen,deb_data);

	return status; /* length in case of success */
}

int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val)
{
	u8 buf[3] = { REQUEST_SET_GPIO, gpio, ((gpio_dir & 0x01) << 7) | ((gpio_val & 0x01) << 6) };
	return dib0700_ctrl_wr(d,buf,3);
}

/*
 * I2C master xfer function (supported in 1.20 firmware)
 */
static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg,
				int num)
{
	/* The new i2c firmware messages are more reliable and in particular
	   properly support i2c read calls not preceded by a write */

	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	uint8_t bus_mode = 1;  /* 0=eeprom bus, 1=frontend bus */
	uint8_t gen_mode = 0; /* 0=master i2c, 1=gpio i2c */
	uint8_t en_start = 0;
	uint8_t en_stop = 0;
	uint8_t buf[255]; /* TBV: malloc ? */
	int result, i;

	/* Ensure nobody else hits the i2c bus while we're sending our
	   sequence of messages, (such as the remote control thread) */
	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
		return -EAGAIN;

	for (i = 0; i < num; i++) {
		if (i == 0) {
			/* First message in the transaction */
			en_start = 1;
		} else if (!(msg[i].flags & I2C_M_NOSTART)) {
			/* Device supports repeated-start */
			en_start = 1;
		} else {
			/* Not the first packet and device doesn't support
			   repeated start */
			en_start = 0;
		}
		if (i == (num - 1)) {
			/* Last message in the transaction */
			en_stop = 1;
		}

		if (msg[i].flags & I2C_M_RD) {
			/* Read request */
			u16 index, value;
			uint8_t i2c_dest;

			i2c_dest = (msg[i].addr << 1);
			value = ((en_start << 7) | (en_stop << 6) |
				 (msg[i].len & 0x3F)) << 8 | i2c_dest;
			/* I2C ctrl + FE bus; */
			index = ((gen_mode<<6)&0xC0) | ((bus_mode<<4)&0x30);

			result = usb_control_msg(d->udev,
						 usb_rcvctrlpipe(d->udev, 0),
						 REQUEST_NEW_I2C_READ,
						 USB_TYPE_VENDOR | USB_DIR_IN,
						 value, index, msg[i].buf,
						 msg[i].len,
						 USB_CTRL_GET_TIMEOUT);
			if (result < 0) {
				err("i2c read error (status = %d)\n", result);
				break;
			}
		} else {
			/* Write request */
			buf[0] = REQUEST_NEW_I2C_WRITE;
			buf[1] = (msg[i].addr << 1);
			buf[2] = (en_start << 7) | (en_stop << 6) |
				(msg[i].len & 0x3F);
			/* I2C ctrl + FE bus; */
			buf[3] = ((gen_mode<<6)&0xC0) | ((bus_mode<<4)&0x30);
			/* The Actual i2c payload */
			memcpy(&buf[4], msg[i].buf, msg[i].len);

			result = usb_control_msg(d->udev,
						 usb_sndctrlpipe(d->udev, 0),
						 REQUEST_NEW_I2C_WRITE,
						 USB_TYPE_VENDOR | USB_DIR_OUT,
						 0, 0, buf, msg[i].len + 4,
						 USB_CTRL_GET_TIMEOUT);
			if (result < 0) {
				err("i2c write error (status = %d)\n", result);
				break;
			}
		}
	}
	mutex_unlock(&d->i2c_mutex);
	return i;
}

/*
 * I2C master xfer function (pre-1.20 firmware)
 */
static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
				   struct i2c_msg *msg, int num)
{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	int i,len;
	u8 buf[255];

	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
		return -EAGAIN;

	for (i = 0; i < num; i++) {
		/* fill in the address */
		buf[1] = (msg[i].addr << 1);
		/* fill the buffer */
		memcpy(&buf[2], msg[i].buf, msg[i].len);

		/* write/read request */
		if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
			buf[0] = REQUEST_I2C_READ;
			buf[1] |= 1;

			/* special thing in the current firmware: when length is zero the read-failed */
			if ((len = dib0700_ctrl_rd(d, buf, msg[i].len + 2, msg[i+1].buf, msg[i+1].len)) <= 0) {
				deb_info("I2C read failed on address 0x%02x\n",
					 msg[i].addr);
				break;
			}

			msg[i+1].len = len;

			i++;
		} else {
			buf[0] = REQUEST_I2C_WRITE;
			if (dib0700_ctrl_wr(d, buf, msg[i].len + 2) < 0)
				break;
		}
	}

	mutex_unlock(&d->i2c_mutex);
	return i;
}

static int dib0700_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
			    int num)
{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	struct dib0700_state *st = d->priv;

	if (st->fw_use_new_i2c_api == 1) {
		/* User running at least fw 1.20 */
		return dib0700_i2c_xfer_new(adap, msg, num);
	} else {
		/* Use legacy calls */
		return dib0700_i2c_xfer_legacy(adap, msg, num);
	}
}

static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
{
	return I2C_FUNC_I2C;
}

struct i2c_algorithm dib0700_i2c_algo = {
	.master_xfer   = dib0700_i2c_xfer,
	.functionality = dib0700_i2c_func,
};

int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props,
			struct dvb_usb_device_description **desc, int *cold)
{
	u8 b[16];
	s16 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev,0),
		REQUEST_GET_VERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT);

	deb_info("FW GET_VERSION length: %d\n",ret);

	*cold = ret <= 0;

	deb_info("cold: %d\n", *cold);
	return 0;
}

static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
	u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv,
	u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
{
	u8 b[10];
	b[0] = REQUEST_SET_CLOCK;
	b[1] = (en_pll << 7) | (pll_src << 6) | (pll_range << 5) | (clock_gpio3 << 4);
	b[2] = (pll_prediv >> 8)  & 0xff; // MSB
	b[3] =  pll_prediv        & 0xff; // LSB
	b[4] = (pll_loopdiv >> 8) & 0xff; // MSB
	b[5] =  pll_loopdiv       & 0xff; // LSB
	b[6] = (free_div >> 8)    & 0xff; // MSB
	b[7] =  free_div          & 0xff; // LSB
	b[8] = (dsuScaler >> 8)   & 0xff; // MSB
	b[9] =  dsuScaler         & 0xff; // LSB

	return dib0700_ctrl_wr(d, b, 10);
}

int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3)
{
	switch (clk_MHz) {
		case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break;
		default: return -EINVAL;
	}
	return 0;
}

static int dib0700_jumpram(struct usb_device *udev, u32 address)
{
	int ret, actlen;
	u8 buf[8] = { REQUEST_JUMPRAM, 0, 0, 0,
		(address >> 24) & 0xff,
		(address >> 16) & 0xff,
		(address >> 8)  & 0xff,
		 address        & 0xff };

	if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
		deb_fw("jumpram to 0x%x failed\n",address);
		return ret;
	}
	if (actlen != 8) {
		deb_fw("jumpram to 0x%x failed\n",address);
		return -EIO;
	}
	return 0;
}

int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw)
{
	struct hexline hx;
	int pos = 0, ret, act_len;

	u8 buf[260];

	while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
		deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",hx.addr, hx.len, hx.chk);

		buf[0] = hx.len;
		buf[1] = (hx.addr >> 8) & 0xff;
		buf[2] =  hx.addr       & 0xff;
		buf[3] = hx.type;
		memcpy(&buf[4],hx.data,hx.len);
		buf[4+hx.len] = hx.chk;

		ret = usb_bulk_msg(udev,
			usb_sndbulkpipe(udev, 0x01),
			buf,
			hx.len + 5,
			&act_len,
			1000);

		if (ret < 0) {
			err("firmware download failed at %d with %d",pos,ret);
			return ret;
		}
	}

	if (ret == 0) {
		/* start the firmware */
		if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) {
			info("firmware started successfully.");
			msleep(500);
		}
	} else
		ret = -EIO;

	return ret;
}

int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
	struct dib0700_state *st = adap->dev->priv;
	u8 b[4];

	b[0] = REQUEST_ENABLE_VIDEO;
	b[1] = (onoff << 4) | 0x00; /* this bit gives a kind of command, rather than enabling something or not */

	if (st->disable_streaming_master_mode == 1)
		b[2] = 0x00;
	else
		b[2] = (0x01 << 4); /* Master mode */

	b[3] = 0x00;

	deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);

	if (onoff)
		st->channel_state |=   1 << adap->id;
	else
		st->channel_state &= ~(1 << adap->id);

	b[2] |= st->channel_state;

	deb_info("data for streaming: %x %x\n",b[1],b[2]);

	return dib0700_ctrl_wr(adap->dev, b, 4);
}

int dib0700_rc_setup(struct dvb_usb_device *d)
{
	u8 rc_setup[3] = {REQUEST_SET_RC, dvb_usb_dib0700_ir_proto, 0};
	int i = dib0700_ctrl_wr(d, rc_setup, 3);
	if (i<0) {
		err("ir protocol setup failed");
		return -1;
	}
	return 0;
}

static int dib0700_probe(struct usb_interface *intf,
		const struct usb_device_id *id)
{
	int i;
	struct dvb_usb_device *dev;

	for (i = 0; i < dib0700_device_count; i++)
		if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE,
					&dev, adapter_nr) == 0)
		{
			dib0700_rc_setup(dev);
			return 0;
		}

	return -ENODEV;
}

static struct usb_driver dib0700_driver = {
	.name       = "dvb_usb_dib0700",
	.probe      = dib0700_probe,
	.disconnect = dvb_usb_device_exit,
	.id_table   = dib0700_usb_id_table,
};

/* module stuff */
static int __init dib0700_module_init(void)
{
	int result;
	info("loaded with support for %d different device-types", dib0700_device_count);
	if ((result = usb_register(&dib0700_driver))) {
		err("usb_register failed. Error number %d",result);
		return result;
	}

	return 0;
}

static void __exit dib0700_module_exit(void)
{
	/* deregister this driver from the USB subsystem */
	usb_deregister(&dib0700_driver);
}

module_init (dib0700_module_init);
module_exit (dib0700_module_exit);

MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
MODULE_VERSION("1.0");
MODULE_LICENSE("GPL");
Commit	Line	Data
b7f54910 PB	1	/* Linux driver for devices based on the DiBcom DiB0700 USB bridge
	2	*
	3	* This program is free software; you can redistribute it and/or modify it
	4	* under the terms of the GNU General Public License as published by the Free
	5	* Software Foundation, version 2.
	6	*
	7	* Copyright (C) 2005-6 DiBcom, SA
	8	*/
	9	#include "dib0700.h"
	10
	11	/* debug */
	12	int dvb_usb_dib0700_debug;
	13	module_param_named(debug,dvb_usb_dib0700_debug, int, 0644);
	14	MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS);
	15
58e6f95e	16	int dvb_usb_dib0700_ir_proto = 1;
89f4267d JG	17	module_param(dvb_usb_dib0700_ir_proto, int, 0644);
	18	MODULE_PARM_DESC(dvb_usb_dib0700_ir_proto, "set ir protocol (0=NEC, 1=RC5 (default), 2=RC6).");
	19
78e92006 JG	20	DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
78e92006 JG	21
99afb989 DH	22
	23	int dib0700_get_version(struct dvb_usb_device d, u32 hwversion,
	24	u32 romversion, u32 ramversion, u32 *fwtype)
	25	{
	26	u8 b[16];
	27	int ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
	28	REQUEST_GET_VERSION,
	29	USB_TYPE_VENDOR \| USB_DIR_IN, 0, 0,
	30	b, sizeof(b), USB_CTRL_GET_TIMEOUT);
	31	*hwversion = (b[0] << 24) \| (b[1] << 16) \| (b[2] << 8) \| b[3];
	32	*romversion = (b[4] << 24) \| (b[5] << 16) \| (b[6] << 8) \| b[7];
	33	*ramversion = (b[8] << 24) \| (b[9] << 16) \| (b[10] << 8) \| b[11];
	34	*fwtype = (b[12] << 24) \| (b[13] << 16) \| (b[14] << 8) \| b[15];
	35	return ret;
	36	}
	37
b7f54910 PB	38	/* expecting rx buffer: request data[0] data[1] ... data[2] */
	39	static int dib0700_ctrl_wr(struct dvb_usb_device d, u8 tx, u8 txlen)
	40	{
	41	int status;
	42
	43	deb_data(">>> ");
	44	debug_dump(tx,txlen,deb_data);
	45
	46	status = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev,0),
	47	tx[0], USB_TYPE_VENDOR \| USB_DIR_OUT, 0, 0, tx, txlen,
	48	USB_CTRL_GET_TIMEOUT);
	49
	50	if (status != txlen)
6958effe	51	deb_data("ep 0 write error (status = %d, len: %d)\n",status,txlen);
b7f54910 PB	52
	53	return status < 0 ? status : 0;
	54	}
	55
	56	/* expecting tx buffer: request data[0] ... data[n] (n <= 4) */
54d75eba	57	int dib0700_ctrl_rd(struct dvb_usb_device d, u8 tx, u8 txlen, u8 *rx, u8 rxlen)
b7f54910 PB	58	{
	59	u16 index, value;
	60	int status;
	61
	62	if (txlen < 2) {
	63	err("tx buffer length is smaller than 2. Makes no sense.");
	64	return -EINVAL;
	65	}
	66	if (txlen > 4) {
	67	err("tx buffer length is larger than 4. Not supported.");
	68	return -EINVAL;
	69	}
	70
	71	deb_data(">>> ");
	72	debug_dump(tx,txlen,deb_data);
	73
	74	value = ((txlen - 2) << 8) \| tx[1];
	75	index = 0;
	76	if (txlen > 2)
	77	index \|= (tx[2] << 8);
	78	if (txlen > 3)
	79	index \|= tx[3];
	80
b7f54910 PB	81	status = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev,0), tx[0],
	82	USB_TYPE_VENDOR \| USB_DIR_IN, value, index, rx, rxlen,
	83	USB_CTRL_GET_TIMEOUT);
	84
	85	if (status < 0)
6958effe	86	deb_info("ep 0 read error (status = %d)\n",status);
b7f54910 PB	87
	88	deb_data("<<< ");
	89	debug_dump(rx,rxlen,deb_data);
	90
	91	return status; /* length in case of success */
	92	}
	93
	94	int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val)
	95	{
	96	u8 buf[3] = { REQUEST_SET_GPIO, gpio, ((gpio_dir & 0x01) << 7) \| ((gpio_val & 0x01) << 6) };
	97	return dib0700_ctrl_wr(d,buf,3);
	98	}
	99
	100	/*
bdc203e1	101	* I2C master xfer function (supported in 1.20 firmware)
b7f54910	102	*/
bdc203e1 DH	103	static int dib0700_i2c_xfer_new(struct i2c_adapter adap, struct i2c_msg msg,
	104	int num)
	105	{
	106	/* The new i2c firmware messages are more reliable and in particular
	107	properly support i2c read calls not preceded by a write */
	108
	109	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	110	uint8_t bus_mode = 1; /* 0=eeprom bus, 1=frontend bus */
	111	uint8_t gen_mode = 0; /* 0=master i2c, 1=gpio i2c */
	112	uint8_t en_start = 0;
	113	uint8_t en_stop = 0;
	114	uint8_t buf[255]; /* TBV: malloc ? */
	115	int result, i;
	116
	117	/* Ensure nobody else hits the i2c bus while we're sending our
	118	sequence of messages, (such as the remote control thread) */
	119	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
	120	return -EAGAIN;
	121
	122	for (i = 0; i < num; i++) {
	123	if (i == 0) {
	124	/* First message in the transaction */
	125	en_start = 1;
	126	} else if (!(msg[i].flags & I2C_M_NOSTART)) {
	127	/* Device supports repeated-start */
	128	en_start = 1;
	129	} else {
	130	/* Not the first packet and device doesn't support
	131	repeated start */
	132	en_start = 0;
	133	}
	134	if (i == (num - 1)) {
	135	/* Last message in the transaction */
	136	en_stop = 1;
	137	}
	138
	139	if (msg[i].flags & I2C_M_RD) {
	140	/* Read request */
	141	u16 index, value;
	142	uint8_t i2c_dest;
	143
	144	i2c_dest = (msg[i].addr << 1);
	145	value = ((en_start << 7) \| (en_stop << 6) \|
	146	(msg[i].len & 0x3F)) << 8 \| i2c_dest;
	147	/* I2C ctrl + FE bus; */
	148	index = ((gen_mode<<6)&0xC0) \| ((bus_mode<<4)&0x30);
	149
	150	result = usb_control_msg(d->udev,
	151	usb_rcvctrlpipe(d->udev, 0),
	152	REQUEST_NEW_I2C_READ,
	153	USB_TYPE_VENDOR \| USB_DIR_IN,
	154	value, index, msg[i].buf,
	155	msg[i].len,
	156	USB_CTRL_GET_TIMEOUT);
	157	if (result < 0) {
	158	err("i2c read error (status = %d)\n", result);
	159	break;
	160	}
	161	} else {
	162	/* Write request */
	163	buf[0] = REQUEST_NEW_I2C_WRITE;
	164	buf[1] = (msg[i].addr << 1);
	165	buf[2] = (en_start << 7) \| (en_stop << 6) \|
	166	(msg[i].len & 0x3F);
167	/* I2C ctrl + FE bus; */
168	buf[3] = ((gen_mode<<6)&0xC0) \| ((bus_mode<<4)&0x30);
169	/* The Actual i2c payload */
170	memcpy(&buf[4], msg[i].buf, msg[i].len);
171
172	result = usb_control_msg(d->udev,
173	usb_sndctrlpipe(d->udev, 0),
174	REQUEST_NEW_I2C_WRITE,
175	USB_TYPE_VENDOR \| USB_DIR_OUT,
176	0, 0, buf, msg[i].len + 4,
177	USB_CTRL_GET_TIMEOUT);
178	if (result < 0) {
179	err("i2c write error (status = %d)\n", result);
180	break;
181	}
182	}
183	}
184	mutex_unlock(&d->i2c_mutex);
185	return i;
186	}
187
188	/*
189	* I2C master xfer function (pre-1.20 firmware)
190	*/
191	static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
192	struct i2c_msg *msg, int num)
b7f54910 PB	193	{
	194	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	195	int i,len;
	196	u8 buf[255];
	197
	198	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
	199	return -EAGAIN;
	200
	201	for (i = 0; i < num; i++) {
	202	/* fill in the address */
	203	buf[1] = (msg[i].addr << 1);
	204	/* fill the buffer */
	205	memcpy(&buf[2], msg[i].buf, msg[i].len);
	206
	207	/* write/read request */
	208	if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
	209	buf[0] = REQUEST_I2C_READ;
	210	buf[1] \|= 1;
	211
	212	/* special thing in the current firmware: when length is zero the read-failed */
303cbeaa	213	if ((len = dib0700_ctrl_rd(d, buf, msg[i].len + 2, msg[i+1].buf, msg[i+1].len)) <= 0) {
8db12cdf DH	214	deb_info("I2C read failed on address 0x%02x\n",
8db12cdf DH	215	msg[i].addr);
b7f54910	216	break;
303cbeaa	217	}
b7f54910 PB	218
	219	msg[i+1].len = len;
	220
	221	i++;
	222	} else {
	223	buf[0] = REQUEST_I2C_WRITE;
	224	if (dib0700_ctrl_wr(d, buf, msg[i].len + 2) < 0)
	225	break;
	226	}
	227	}
	228
	229	mutex_unlock(&d->i2c_mutex);
	230	return i;
	231	}
	232
bdc203e1 DH	233	static int dib0700_i2c_xfer(struct i2c_adapter adap, struct i2c_msg msg,
	234	int num)
	235	{
	236	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	237	struct dib0700_state *st = d->priv;
	238
	239	if (st->fw_use_new_i2c_api == 1) {
	240	/* User running at least fw 1.20 */
	241	return dib0700_i2c_xfer_new(adap, msg, num);
	242	} else {
	243	/* Use legacy calls */
	244	return dib0700_i2c_xfer_legacy(adap, msg, num);
	245	}
	246	}
	247
b7f54910 PB	248	static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
	249	{
	250	return I2C_FUNC_I2C;
	251	}
	252
	253	struct i2c_algorithm dib0700_i2c_algo = {
	254	.master_xfer = dib0700_i2c_xfer,
	255	.functionality = dib0700_i2c_func,
	256	};
	257
6958effe PB	258	int dib0700_identify_state(struct usb_device udev, struct dvb_usb_device_properties props,
	259	struct dvb_usb_device_description *desc, int cold)
	260	{
a75763ff PB	261	u8 b[16];
	262	s16 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev,0),
	263	REQUEST_GET_VERSION, USB_TYPE_VENDOR \| USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT);
	264
	265	deb_info("FW GET_VERSION length: %d\n",ret);
	266
	267	*cold = ret <= 0;
6958effe PB	268
6958effe PB	269	deb_info("cold: %d\n", *cold);
6958effe PB	270	return 0;
	271	}
	272
a75763ff PB	273	static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
	274	u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv,
	275	u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
	276	{
	277	u8 b[10];
	278	b[0] = REQUEST_SET_CLOCK;
	279	b[1] = (en_pll << 7) \| (pll_src << 6) \| (pll_range << 5) \| (clock_gpio3 << 4);
	280	b[2] = (pll_prediv >> 8) & 0xff; // MSB
	281	b[3] = pll_prediv & 0xff; // LSB
	282	b[4] = (pll_loopdiv >> 8) & 0xff; // MSB
	283	b[5] = pll_loopdiv & 0xff; // LSB
	284	b[6] = (free_div >> 8) & 0xff; // MSB
	285	b[7] = free_div & 0xff; // LSB
	286	b[8] = (dsuScaler >> 8) & 0xff; // MSB
	287	b[9] = dsuScaler & 0xff; // LSB
	288
	289	return dib0700_ctrl_wr(d, b, 10);
	290	}
	291
	292	int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3)
	293	{
	294	switch (clk_MHz) {
	295	case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break;
	296	default: return -EINVAL;
	297	}
	298	return 0;
	299	}
	300
b7f54910 PB	301	static int dib0700_jumpram(struct usb_device *udev, u32 address)
	302	{
	303	int ret, actlen;
	304	u8 buf[8] = { REQUEST_JUMPRAM, 0, 0, 0,
	305	(address >> 24) & 0xff,
	306	(address >> 16) & 0xff,
	307	(address >> 8) & 0xff,
	308	address & 0xff };
	309
	310	if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
	311	deb_fw("jumpram to 0x%x failed\n",address);
	312	return ret;
	313	}
	314	if (actlen != 8) {
	315	deb_fw("jumpram to 0x%x failed\n",address);
	316	return -EIO;
	317	}
	318	return 0;
	319	}
	320
	321	int dib0700_download_firmware(struct usb_device udev, const struct firmware fw)
	322	{
	323	struct hexline hx;
	324	int pos = 0, ret, act_len;
	325
	326	u8 buf[260];
	327
	328	while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
5bc63607	329	deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",hx.addr, hx.len, hx.chk);
b7f54910 PB	330
b7f54910 PB	331	buf[0] = hx.len;
5bc63607 PB	332	buf[1] = (hx.addr >> 8) & 0xff;
5bc63607 PB	333	buf[2] = hx.addr & 0xff;
b7f54910 PB	334	buf[3] = hx.type;
	335	memcpy(&buf[4],hx.data,hx.len);
	336	buf[4+hx.len] = hx.chk;
	337
	338	ret = usb_bulk_msg(udev,
	339	usb_sndbulkpipe(udev, 0x01),
	340	buf,
	341	hx.len + 5,
	342	&act_len,
	343	1000);
	344
	345	if (ret < 0) {
	346	err("firmware download failed at %d with %d",pos,ret);
	347	return ret;
	348	}
	349	}
	350
	351	if (ret == 0) {
	352	/* start the firmware */
6958effe	353	if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) {
b7f54910	354	info("firmware started successfully.");
a75763ff	355	msleep(500);
6958effe	356	}
b7f54910 PB	357	} else
	358	ret = -EIO;
	359
	360	return ret;
	361	}
	362
	363	int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
	364	{
	365	struct dib0700_state *st = adap->dev->priv;
	366	u8 b[4];
	367
	368	b[0] = REQUEST_ENABLE_VIDEO;
a162abb0	369	b[1] = (onoff << 4) \| 0x00; /* this bit gives a kind of command, rather than enabling something or not */
cb22cb52 DH	370
	371	if (st->disable_streaming_master_mode == 1)
	372	b[2] = 0x00;
	373	else
	374	b[2] = (0x01 << 4); /* Master mode */
	375
b7f54910 PB	376	b[3] = 0x00;
	377
	378	deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
	379
	380	if (onoff)
	381	st->channel_state \|= 1 << adap->id;
	382	else
	383	st->channel_state &= ~(1 << adap->id);
	384
	385	b[2] \|= st->channel_state;
	386
b7f54910 PB	387	deb_info("data for streaming: %x %x\n",b[1],b[2]);
	388
	389	return dib0700_ctrl_wr(adap->dev, b, 4);
	390	}
	391
58e6f95e	392	int dib0700_rc_setup(struct dvb_usb_device *d)
89f4267d JG	393	{
	394	u8 rc_setup[3] = {REQUEST_SET_RC, dvb_usb_dib0700_ir_proto, 0};
	395	int i = dib0700_ctrl_wr(d, rc_setup, 3);
	396	if (i<0) {
	397	err("ir protocol setup failed");
	398	return -1;
	399	}
	400	return 0;
	401	}
	402
b7f54910 PB	403	static int dib0700_probe(struct usb_interface *intf,
	404	const struct usb_device_id *id)
	405	{
	406	int i;
89f4267d	407	struct dvb_usb_device *dev;
b7f54910 PB	408
b7f54910 PB	409	for (i = 0; i < dib0700_device_count; i++)
78e92006 JG	410	if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE,
78e92006 JG	411	&dev, adapter_nr) == 0)
89f4267d JG	412	{
89f4267d JG	413	dib0700_rc_setup(dev);
b7f54910	414	return 0;
89f4267d	415	}
b7f54910 PB	416
	417	return -ENODEV;
	418	}
	419
	420	static struct usb_driver dib0700_driver = {
	421	.name = "dvb_usb_dib0700",
	422	.probe = dib0700_probe,
	423	.disconnect = dvb_usb_device_exit,
	424	.id_table = dib0700_usb_id_table,
	425	};
	426
	427	/* module stuff */
	428	static int __init dib0700_module_init(void)
	429	{
	430	int result;
	431	info("loaded with support for %d different device-types", dib0700_device_count);
	432	if ((result = usb_register(&dib0700_driver))) {
	433	err("usb_register failed. Error number %d",result);
	434	return result;
	435	}
	436
	437	return 0;
	438	}
	439
	440	static void __exit dib0700_module_exit(void)
	441	{
	442	/* deregister this driver from the USB subsystem */
	443	usb_deregister(&dib0700_driver);
	444	}
	445
	446	module_init (dib0700_module_init);
	447	module_exit (dib0700_module_exit);
	448
	449	MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
	450	MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
	451	MODULE_VERSION("1.0");
	452	MODULE_LICENSE("GPL");