path: root/drivers/media/dvb/dvb-usb/m920x.c

/* DVB USB compliant linux driver for MSI Mega Sky 580 DVB-T USB2.0 receiver
 *
 * Copyright (C) 2006 Aapo Tahkola (aet@rasterburn.org)
 *
 *	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 "m920x.h"

#include "mt352.h"
#include "mt352_priv.h"
#include "qt1010.h"
#include "tda1004x.h"
#include "tda827x.h"

#include <media/tuner.h>
#include "tuner-simple.h"
#include <asm/unaligned.h>

/* debug */
static int dvb_usb_m920x_debug;
module_param_named(debug,dvb_usb_m920x_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

static int m920x_set_filter(struct dvb_usb_device *d, int type, int idx, int pid);

static inline int m920x_read(struct usb_device *udev, u8 request, u16 value,
			     u16 index, void *data, int size)
{
	int ret;

	ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
			      request, USB_TYPE_VENDOR | USB_DIR_IN,
			      value, index, data, size, 2000);
	if (ret < 0) {
		printk(KERN_INFO "m920x_read = error: %d\n", ret);
		return ret;
	}

	if (ret != size) {
		deb("m920x_read = no data\n");
		return -EIO;
	}

	return 0;
}

static inline int m920x_write(struct usb_device *udev, u8 request,
			      u16 value, u16 index)
{
	int ret;

	ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
			      request, USB_TYPE_VENDOR | USB_DIR_OUT,
			      value, index, NULL, 0, 2000);

	return ret;
}

static int m920x_init(struct dvb_usb_device *d, struct m920x_inits *rc_seq)
{
	int ret = 0, i, epi, flags = 0;
	int adap_enabled[M9206_MAX_ADAPTERS] = { 0 };

	/* Remote controller init. */
	if (d->props.rc.legacy.rc_query) {
		deb("Initialising remote control\n");
		while (rc_seq->address) {
			if ((ret = m920x_write(d->udev, M9206_CORE,
					       rc_seq->data,
					       rc_seq->address)) != 0) {
				deb("Initialising remote control failed\n");
				return ret;
			}

			rc_seq++;
		}

		deb("Initialising remote control success\n");
	}

	for (i = 0; i < d->props.num_adapters; i++)
		flags |= d->adapter[i].props.fe[0].caps;

	/* Some devices(Dposh) might crash if we attempt touch at all. */
	if (flags & DVB_USB_ADAP_HAS_PID_FILTER) {
		for (i = 0; i < d->props.num_adapters; i++) {
			epi = d->adapter[i].props.fe[0].stream.endpoint - 0x81;

			if (epi < 0 || epi >= M9206_MAX_ADAPTERS) {
				printk(KERN_INFO "m920x: Unexpected adapter endpoint!\n");
				return -EINVAL;
			}

			adap_enabled[epi] = 1;
		}

		for (i = 0; i < M9206_MAX_ADAPTERS; i++) {
			if (adap_enabled[i])
				continue;

			if ((ret = m920x_set_filter(d, 0x81 + i, 0, 0x0)) != 0)
				return ret;

			if ((ret = m920x_set_filter(d, 0x81 + i, 0, 0x02f5)) != 0)
				return ret;
		}
	}

	return ret;
}

static int m920x_init_ep(struct usb_interface *intf)
{
	struct usb_device *udev = interface_to_usbdev(intf);
	struct usb_host_interface *alt;

	if ((alt = usb_altnum_to_altsetting(intf, 1)) == NULL) {
		deb("No alt found!\n");
		return -ENODEV;
	}

	return usb_set_interface(udev, alt->desc.bInterfaceNumber,
				 alt->desc.bAlternateSetting);
}

static int m920x_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
{
	struct m920x_state *m = d->priv;
	int i, ret = 0;
	u8 *rc_state;

	rc_state = kmalloc(2, GFP_KERNEL);
	if (!rc_state)
		return -ENOMEM;

	if ((ret = m920x_read(d->udev, M9206_CORE, 0x0, M9206_RC_STATE, rc_state, 1)) != 0)
		goto out;

	if ((ret = m920x_read(d->udev, M9206_CORE, 0x0, M9206_RC_KEY, rc_state + 1, 1)) != 0)
		goto out;

	for (i = 0; i < d->props.rc.legacy.rc_map_size; i++)
		if (rc5_data(&d->props.rc.legacy.rc_map_table[i]) == rc_state[1]) {
			*event = d->props.rc.legacy.rc_map_table[i].keycode;

			switch(rc_state[0]) {
			case 0x80:
				*state = REMOTE_NO_KEY_PRESSED;
				goto out;

			case 0x88: /* framing error or "invalid code" */
			case 0x99:
			case 0xc0:
			case 0xd8:
				*state = REMOTE_NO_KEY_PRESSED;
				m->rep_count = 0;
				goto out;

			case 0x93:
			case 0x92:
			case 0x83: /* pinnacle PCTV310e */
			case 0x82:
				m->rep_count = 0;
				*state = REMOTE_KEY_PRESSED;
				goto out;

			case 0x91:
			case 0x81: /* pinnacle PCTV310e */
				/* prevent immediate auto-repeat */
				if (++m->rep_count > 2)
					*state = REMOTE_KEY_REPEAT;
				else
					*state = REMOTE_NO_KEY_PRESSED;
				goto out;

			default:
				deb("Unexpected rc state %02x\n", rc_state[0]);
				*state = REMOTE_NO_KEY_PRESSED;
				goto out;
			}
		}

	if (rc_state[1] != 0)
		deb("Unknown rc key %02x\n", rc_state[1]);

	*state = REMOTE_NO_KEY_PRESSED;

 out:
	kfree(rc_state);
	return ret;
}

/* I2C */
static int m920x_i2c_xfer