/*
 * pluto2.c - Satelco Easywatch Mobile Terrestrial Receiver [DVB-T]
 *
 * Copyright (C) 2005 Andreas Oberritter <obi@linuxtv.org>
 *
 * based on pluto2.c 1.10 - http://instinct-wp8.no-ip.org/pluto/
 * 	by Dany Salman <salmandany@yahoo.fr>
 *	Copyright (c) 2004 TDF
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>

#include "demux.h"
#include "dmxdev.h"
#include "dvb_demux.h"
#include "dvb_frontend.h"
#include "dvb_net.h"
#include "dvbdev.h"
#include "tda1004x.h"

#define DRIVER_NAME		"pluto2"

#define REG_PIDn(n)		((n) << 2)	/* PID n pattern registers */
#define REG_PCAR		0x0020		/* PC address register */
#define REG_TSCR		0x0024		/* TS ctrl & status */
#define REG_MISC		0x0028		/* miscellaneous */
#define REG_MMAC		0x002c		/* MSB MAC address */
#define REG_IMAC		0x0030		/* ISB MAC address */
#define REG_LMAC		0x0034		/* LSB MAC address */
#define REG_SPID		0x0038		/* SPI data */
#define REG_SLCS		0x003c		/* serial links ctrl/status */

#define PID0_NOFIL		(0x0001 << 16)
#define PIDn_ENP		(0x0001 << 15)
#define PID0_END		(0x0001 << 14)
#define PID0_AFIL		(0x0001 << 13)
#define PIDn_PID		(0x1fff <<  0)

#define TSCR_NBPACKETS		(0x00ff << 24)
#define TSCR_DEM		(0x0001 << 17)
#define TSCR_DE			(0x0001 << 16)
#define TSCR_RSTN		(0x0001 << 15)
#define TSCR_MSKO		(0x0001 << 14)
#define TSCR_MSKA		(0x0001 << 13)
#define TSCR_MSKL		(0x0001 << 12)
#define TSCR_OVR		(0x0001 << 11)
#define TSCR_AFUL		(0x0001 << 10)
#define TSCR_LOCK		(0x0001 <<  9)
#define TSCR_IACK		(0x0001 <<  8)
#define TSCR_ADEF		(0x007f <<  0)

#define MISC_DVR		(0x0fff <<  4)
#define MISC_ALED		(0x0001 <<  3)
#define MISC_FRST		(0x0001 <<  2)
#define MISC_LED1		(0x0001 <<  1)
#define MISC_LED0		(0x0001 <<  0)

#define SPID_SPIDR		(0x00ff <<  0)

#define SLCS_SCL		(0x0001 <<  7)
#define SLCS_SDA		(0x0001 <<  6)
#define SLCS_CSN		(0x0001 <<  2)
#define SLCS_OVR		(0x0001 <<  1)
#define SLCS_SWC		(0x0001 <<  0)

#define TS_DMA_PACKETS		(8)
#define TS_DMA_BYTES		(188 * TS_DMA_PACKETS)

#define I2C_ADDR_TDA10046	0x10
#define I2C_ADDR_TUA6034	0xc2
#define NHWFILTERS		8

struct pluto {
	/* pci */
	struct pci_dev *pdev;
	u8 __iomem *io_mem;

	/* dvb */
	struct dmx_frontend hw_frontend;
	struct dmx_frontend mem_frontend;
	struct dmxdev dmxdev;
	struct dvb_adapter dvb_adapter;
	struct dvb_demux demux;
	struct dvb_frontend *fe;
	struct dvb_net dvbnet;
	unsigned int full_ts_users;
	unsigned int users;

	/* i2c */
	struct i2c_algo_bit_data i2c_bit;
	struct i2c_adapter i2c_adap;
	unsigned int i2cbug;

	/* irq */
	unsigned int overflow;

	/* dma */
	dma_addr_t dma_addr;
	u8 dma_buf[TS_DMA_BYTES];
	u8 dummy[4096];
};

static inline struct pluto *feed_to_pluto(struct dvb_demux_feed *feed)
{
	return container_of(feed->demux, struct pluto, demux);
}

static inline struct pluto *frontend_to_pluto(struct dvb_frontend *fe)
{
	return container_of(fe->dvb, struct pluto, dvb_adapter);
}

static inline u32 pluto_readreg(struct pluto *pluto, u32 reg)
{
	return readl(&pluto->io_mem[reg]);
}

static inline void pluto_writereg(struct pluto *pluto, u32 reg, u32 val)
{
	writel(val, &pluto->io_mem[reg]);
}

static inline void pluto_rw(struct pluto *pluto, u32 reg, u32 mask, u32 bits)
{
	u32 val = readl(&pluto->io_mem[reg]);
	val &= ~mask;
	val |= bits;
	writel(val, &pluto->io_mem[reg]);
}

static void pluto_setsda(void *data, int state)
{
	struct pluto *pluto = data;

	if (state)
		pluto_rw(pluto, REG_SLCS, SLCS_SDA, SLCS_SDA);
	else
		pluto_rw(pluto, REG_SLCS, SLCS_SDA, 0);
}

static void pluto_setscl(void *data, int state)
{
	struct pluto *pluto = data;

	if (state)
		pluto_rw(pluto, REG_SLCS, SLCS_SCL, SLCS_SCL);
	else
		pluto_rw(pluto, REG_SLCS, SLCS_SCL, 0);

	/* try to detect i2c_inb() to workaround hardware bug:
	 * reset SDA to high after SCL has been set to low */
	if ((state) && (pluto->i2cbug == 0)) {
		pluto->i2cbug = 1;
	} else {
		if ((!state) && (pluto->i2cbug == 1))
			pluto_setsda(pluto, 1);
		pluto->i2cbug = 0;
	}
}

static int pluto_getsda(void *data)
{
	struct pluto *pluto = data;

	return pluto_readreg(pluto, REG_SLCS) & SLCS_SDA;
}

static int pluto_getscl(void *data)
{
	struct pluto *pluto = data;

	return pluto_readreg(pluto, REG_SLCS) & SLCS_SCL;
}

static void pluto_reset_frontend(struct pluto *pluto, int reenable)
{
	u32 val = pluto_readreg(pluto, REG_MISC);

	if (val & MISC_FRST) {
		val &= ~MISC_FRST;
		pluto_writereg(pluto, REG_MISC, val);
	}
	if (reenable) {
		val |= MISC_FRST;
		pluto_writereg(pluto, REG_MISC, val);
	}
}

static void pluto_reset_ts(struct pluto *pluto, int reenable)
{
	u32 val = pluto_readreg(pluto, REG_TSCR);

	if (val & TSCR_RSTN) {
		val &= ~TSCR_RSTN;
		pluto_writereg(pluto, REG_TSCR, val);
	}
	if (reenable) {
		val |= TSCR_RSTN;
		pluto_writereg(pluto, REG_TSCR, val);
	}
}

static void pluto_set_dma_addr(struct pluto *pluto)
{
	pluto_writereg(pluto, REG_PCAR, cpu_to_le32(pluto->dma_addr));
}

static int __devinit pluto_dma_map(struct pluto *pluto)
{
	pluto->dma_addr = pci_map_single(pluto->pdev, pluto->dma_buf,
			TS_DMA_BYTES, PCI_DMA_FROMDEVICE);

	return pci_dma_mapping_error(pluto->dma_addr);
}

static void pluto_dma_unmap(struct pluto *pluto)
{
	pci_unmap_single(pluto->pdev, pluto->dma_addr,
			TS_DMA_BYTES, PCI_DMA_FROMDEVICE);
}

static int pluto_start_feed(struct dvb_demux_feed *f)
{
	struct pluto *pluto = feed_to_pluto(f);

	/* enable PID filtering */
	if (pluto->users++ == 0)
		pluto_rw(pluto, REG_PIDn(0), PID0_AFIL | PID0_NOFIL, 0);

	if ((f->pid < 0x2000) && (f->index < NHWFILTERS))
		pluto_rw(pluto, REG_PIDn(f->index), PIDn_ENP | PIDn_PID, PIDn_ENP | f->pid);
	else if (pluto->full_ts_users++ == 0)
		pluto_rw(pluto, REG_PIDn(0), PID0_NOFIL, PID0_NOFIL);

	return 0;
}

static int pluto_stop_feed(struct dvb_demux_feed *f)
{
	struct pluto *pluto = feed_to_pluto(f);

	/* disable PID filtering */
	if (--pluto->users == 0)
		pluto_rw(pluto, REG_PIDn(0), PID0_AFIL, PID0_AFIL);

	if ((f->pid < 0x2000) && (f->index < NHWFILTERS))
		pluto_rw(pluto, REG_PIDn(f->index), PIDn_ENP | PIDn_PID, 0x1fff);
	else if (--pluto->full_ts_users == 0)
		pluto_rw(pluto, REG_PIDn(0), PID0_NOFIL, 0);

	return 0;
}

static void pluto_dma_end(struct pluto *pluto, unsigned int nbpackets)
{
	/* synchronize the DMA transfer with the CPU
	 * first so that we see updated contents. */
	pci_dma_sync_single_for_cpu(pluto->pdev, pluto->dma_addr,
			TS_DMA_BYTES, PCI_DMA_FROMDEVICE);

	/* Workaround for broken hardware:
	 * [1] On startup NBPACKETS seems to contain an uninitialized value,
	 *     but no packets have been transfered.
	 * [2] Sometimes (actually very often) NBPACKETS stays at zero
	 *     although one packet has been transfered.
	 */
	if ((nbpackets == 0) || (nbpackets > TS_DMA_PACKETS)) {
		unsigned int i = 0;
		while (pluto->dma_buf[i] == 0x47)
			i += 188;
		nbpackets = i / 188;
	}

	dvb_dmx_swfilter_packets(&pluto->demux, pluto->dma_buf, nbpackets);

	/* clear the dma buffer. this is needed to be able to identify
	 * new valid ts packets above */
	memset(pluto->dma_buf, 0, nbpackets * 188);

	/* reset the dma address */
	pluto_set_dma_addr(pluto);

	/* sync the buffer and give it back to the card */
	pci_dma_sync_single_for_device(pluto->pdev, pluto->dma_addr,
			TS_DMA_BYTES, PCI_DMA_FROMDEVICE);
}

static irqreturn_t pluto_irq(int irq, void *dev_id, struct pt_regs *regs)
{
	struct pluto *pluto = dev_id;
	u32 tscr;

	/* check whether an interrupt occured on this device */
	tscr = pluto_readreg(pluto, REG_TSCR);
	if (!(tscr & (TSCR_DE | TSCR_OVR)))
		return IRQ_NONE;

	if (tscr == 0xffffffff) {
		// FIXME: maybe recover somehow
		dev_err(&pluto->pdev->dev, "card hung up :(\n");
		return IRQ_HANDLED;
	}

	/* dma end interrupt */
	if (tscr & TSCR_DE) {
		pluto_dma_end(pluto, (tscr & TSCR_NBPACKETS) >> 24);
		/* overflow interrupt */
		if (tscr & TSCR_OVR)
			pluto->overflow++;
		if (pluto->overflow) {
			dev_err(&pluto->pdev->dev, "overflow irq (%d)\n",
					pluto->overflow);
			pluto_reset_ts(pluto, 1);
			pluto->overflow = 0;
		}
	} else if (tscr & TSCR_OVR) {
		pluto->overflow++;
	}

	/* ACK the interrupt */
	pluto_writereg(pluto, REG_TSCR, tscr | TSCR_IACK);

	return IRQ_HANDLED;
}

static void __devinit pluto_enable_irqs(struct pluto *pluto)
{
	u32 val = pluto_readreg(pluto, REG_TSCR);

	/* set the number of packets */
	val &= ~TSCR_ADEF;
	val |= TS_DMA_PACKETS / 2;
	/* disable AFUL and LOCK interrupts */
	val |= (TSCR_MSKA | TSCR_MSKL);
	/* enable DMA and OVERFLOW interrupts */
	val &= ~(TSCR_DEM | TSCR_MSKO);
	/* clear pending interrupts */
	val |= TSCR_IACK;

	pluto_writereg(pluto, REG_TSCR, val);
}

static void pluto_disable_irqs(struct pluto *pluto)
{
	u32 val = pluto_readreg(pluto, REG_TSCR);

	/* disable all interrupts */
	val |= (TSCR_DEM | TSCR_MSKO | TSCR_MSKA | TSCR_MSKL);
	/* clear pending interrupts */
	val |= TSCR_IACK;

	pluto_writereg(pluto, REG_TSCR, val);
}

static int __devinit pluto_hw_init(struct pluto *pluto)
{
	pluto_reset_frontend(pluto, 1);

	/* set automatic LED control by FPGA */
	pluto_rw(pluto, REG_MISC, MISC_ALED, MISC_ALED);

	/* set data endianess */
#ifdef __LITTLE_ENDIAN
	pluto_rw(pluto, REG_PIDn(0), PID0_END, PID0_END);
#else
	pluto_rw(pluto, REG_PIDn(0), PID0_END, 0);
#endif
	/* map DMA and set address */
	pluto_dma_map(pluto);
	pluto_set_dma_addr(pluto);

	/* enable interrupts */
	pluto_enable_irqs(pluto);

	/* reset TS logic */
	pluto_reset_ts(pluto, 1);

	return 0;
}

static void pluto_hw_exit(struct pluto *pluto)
{
	/* disable interrupts */
	pluto_disable_irqs(pluto);

	pluto_reset_ts(pluto, 0);

	/* LED: disable automatic control, enable yellow, disable green */
	pluto_rw(pluto, REG_MISC, MISC_ALED | MISC_LED1 | MISC_LED0, MISC_LED1);

	/* unmap DMA */
	pluto_dma_unmap(pluto);

	pluto_reset_frontend(pluto, 0);
}

static inline u32 divide(u32 numerator, u32 denominator)
{
	if (denominator == 0)
		return ~0;

	return (numerator + denominator / 2) / denominator;
}

/* LG Innotek TDTE-E001P (Infineon TUA6034) */
static int lg_tdtpe001p_pll_set(struct dvb_frontend *fe,
				struct dvb_frontend_parameters *p)
{
	struct pluto *pluto = frontend_to_pluto(fe);
	struct i2c_msg msg;
	int ret;
	u8 buf[4];
	u32 div;

	// Fref = 166.667 Hz
	// Fref * 3 = 500.000 Hz
	// IF = 36166667
	// IF / Fref = 217
	//div = divide(p->frequency + 36166667, 166667);
	div = divide(p->frequency * 3, 500000) + 217;
	buf[0] = (div >> 8) & 0x7f;
	buf[1] = (div >> 0) & 0xff;

	if (p->frequency < 611000000)
		buf[2] = 0xb4;
	else if (p->frequency < 811000000)
		buf[2] = 0xbc;
	else
		buf[2] = 0xf4;

	// VHF: 174-230 MHz
	// center: 350 MHz
	// UHF: 470-862 MHz
	if (p->frequency < 350000000)
		buf[3] = 0x02;
	else
		buf[3] = 0x04;

	if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
		buf[3] |= 0x08;

	if (sizeof(buf) == 6) {
		buf[4] = buf[2];
		buf[4] &= ~0x1c;
		buf[4] |=  0x18;

		buf[5] = (0 << 7) | (2 << 4);
	}

	msg.addr = I2C_ADDR_TUA6034 >> 1;
	msg.flags = 0;
	msg.buf = buf;
	msg.len = sizeof(buf);

	ret = i2c_transfer(&pluto->i2c_adap, &msg, 1);
	if (ret < 0)
		return ret;
	else if (ret == 0)
		return -EREMOTEIO;

	return 0;
}

static int pluto2_request_firmware(struct dvb_frontend *fe,
				   const struct firmware **fw, char *name)
{
	struct pluto *pluto = frontend_to_pluto(fe);

	return request_firmware(fw, name, &pluto->pdev->dev);
}

static struct tda1004x_config pluto2_fe_config __devinitdata = {
	.demod_address = I2C_ADDR_TDA10046 >> 1,
	.invert = 1,
	.invert_oclk = 0,
	.xtal_freq = TDA10046_XTAL_16M,
	.agc_config = TDA10046_AGC_DEFAULT,
	.if_freq = TDA10046_FREQ_3617,
	.pll_set = lg_tdtpe001p_pll_set,
	.pll_sleep = NULL,
	.request_firmware = pluto2_request_firmware,
};

static int __devinit frontend_init(struct pluto *pluto)
{
	int ret;

	pluto->fe = tda10046_attach(&pluto2_fe_config, &pluto->i2c_adap);
	if (!pluto->fe) {
		dev_err(&pluto->pdev->dev, "could not attach frontend\n");
		return -ENODEV;
	}

	ret = dvb_register_frontend(&pluto->dvb_adapter, pluto->fe);
	if (ret < 0) {
		if (pluto->fe->ops->release)
			pluto->fe->ops->release(pluto->fe);
		return ret;
	}

	return 0;
}

static void __devinit pluto_read_rev(struct pluto *pluto)
{
	u32 val = pluto_readreg(pluto, REG_MISC) & MISC_DVR;
	dev_info(&pluto->pdev->dev, "board revision %d.%d\n",
			(val >> 12) & 0x0f, (val >> 4) & 0xff);
}

static void __devinit pluto_read_mac(struct pluto *pluto, u8 *mac)
{
	u32 val = pluto_readreg(pluto, REG_MMAC);
	mac[0] = (val >> 8) & 0xff;
	mac[1] = (val >> 0) & 0xff;

	val = pluto_readreg(pluto, REG_IMAC);
	mac[2] = (val >> 8) & 0xff;
	mac[3] = (val >> 0) & 0xff;

	val = pluto_readreg(pluto, REG_LMAC);
	mac[4] = (val >> 8) & 0xff;
	mac[5] = (val >> 0) & 0xff;

	dev_info(&pluto->pdev->dev, "MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
			mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
}

static int __devinit pluto_read_serial(struct pluto *pluto)
{
	struct pci_dev *pdev = pluto->pdev;
	unsigned int i, j;
	u8 __iomem *cis;

	cis = pci_iomap(pdev, 1, 0);
	if (!cis)
		return -EIO;

	dev_info(&pdev->dev, "S/N ");

	for (i = 0xe0; i < 0x100; i += 4) {
		u32 val = readl(&cis[i]);
		for (j = 0; j < 32; j += 8) {
			if ((val & 0xff) == 0xff)
				goto out;
			printk("%c", val & 0xff);
			val >>= 8;
		}
	}
out:
	printk("\n");
	pci_iounmap(pdev, cis);

	return 0;
}

static int __devinit pluto2_probe(struct pci_dev *pdev,
				  const struct pci_device_id *ent)
{
	struct pluto *pluto;
	struct dvb_adapter *dvb_adapter;
	struct dvb_demux *dvbdemux;
	struct dmx_demux *dmx;
	int ret = -ENOMEM;

	pluto = kzalloc(sizeof(struct pluto), GFP_KERNEL);
	if (!pluto)
		goto out;

	pluto->pdev = pdev;

	ret = pci_enable_device(pdev);
	if (ret < 0)
		goto err_kfree;

	/* enable interrupts */
	pci_write_config_dword(pdev, 0x6c, 0x8000);

	ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
	if (ret < 0)
		goto err_pci_disable_device;

	pci_set_master(pdev);

	ret = pci_request_regions(pdev, DRIVER_NAME);
	if (ret < 0)
		goto err_pci_disable_device;

	pluto->io_mem = pci_iomap(pdev, 0, 0x40);
	if (!pluto->io_mem) {
		ret = -EIO;
		goto err_pci_release_regions;
	}

	pci_set_drvdata(pdev, pluto);

	ret = request_irq(pdev->irq, pluto_irq, SA_SHIRQ, DRIVER_NAME, pluto);
	if (ret < 0)
		goto err_pci_iounmap;

	ret = pluto_hw_init(pluto);
	if (ret < 0)
		goto err_free_irq;

	/* i2c */
	i2c_set_adapdata(&pluto->i2c_adap, pluto);
	strcpy(pluto->i2c_adap.name, DRIVER_NAME);
	pluto->i2c_adap.owner = THIS_MODULE;
	pluto->i2c_adap.class = I2C_CLASS_TV_DIGITAL;
	pluto->i2c_adap.dev.parent = &pdev->dev;
	pluto->i2c_adap.algo_data = &pluto->i2c_bit;
	pluto->i2c_bit.data = pluto;
	pluto->i2c_bit.setsda = pluto_setsda;
	pluto->i2c_bit.setscl = pluto_setscl;
	pluto->i2c_bit.getsda = pluto_getsda;
	pluto->i2c_bit.getscl = pluto_getscl;
	pluto->i2c_bit.udelay = 10;
	pluto->i2c_bit.timeout = 10;

	/* Raise SCL and SDA */
	pluto_setsda(pluto, 1);
	pluto_setscl(pluto, 1);

	ret = i2c_bit_add_bus(&pluto->i2c_adap);
	if (ret < 0)
		goto err_pluto_hw_exit;

	/* dvb */
	ret = dvb_register_adapter(&pluto->dvb_adapter, DRIVER_NAME, THIS_MODULE);
	if (ret < 0)
		goto err_i2c_bit_del_bus;

	dvb_adapter = &pluto->dvb_adapter;

	pluto_read_rev(pluto);
	pluto_read_serial(pluto);
	pluto_read_mac(pluto, dvb_adapter->proposed_mac);

	dvbdemux = &pluto->demux;
	dvbdemux->filternum = 256;
	dvbdemux->feednum = 256;
	dvbdemux->start_feed = pluto_start_feed;
	dvbdemux->stop_feed = pluto_stop_feed;
	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
			DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
	ret = dvb_dmx_init(dvbdemux);
	if (ret < 0)
		goto err_dvb_unregister_adapter;

	dmx = &dvbdemux->dmx;

	pluto->hw_frontend.source = DMX_FRONTEND_0;
	pluto->mem_frontend.source = DMX_MEMORY_FE;
	pluto->dmxdev.filternum = NHWFILTERS;
	pluto->dmxdev.demux = dmx;

	ret = dvb_dmxdev_init(&pluto->dmxdev, dvb_adapter);
	if (ret < 0)
		goto err_dvb_dmx_release;

	ret = dmx->add_frontend(dmx, &pluto->hw_frontend);
	if (ret < 0)
		goto err_dvb_dmxdev_release;

	ret = dmx->add_frontend(dmx, &pluto->mem_frontend);
	if (ret < 0)
		goto err_remove_hw_frontend;

	ret = dmx->connect_frontend(dmx, &pluto->hw_frontend);
	if (ret < 0)
		goto err_remove_mem_frontend;

	ret = frontend_init(pluto);
	if (ret < 0)
		goto err_disconnect_frontend;

	dvb_net_init(dvb_adapter, &pluto->dvbnet, dmx);
out:
	return ret;

err_disconnect_frontend:
	dmx->disconnect_frontend(dmx);
err_remove_mem_frontend:
	dmx->remove_frontend(dmx, &pluto->mem_frontend);
err_remove_hw_frontend:
	dmx->remove_frontend(dmx, &pluto->hw_frontend);
err_dvb_dmxdev_release:
	dvb_dmxdev_release(&pluto->dmxdev);
err_dvb_dmx_release:
	dvb_dmx_release(dvbdemux);
err_dvb_unregister_adapter:
	dvb_unregister_adapter(dvb_adapter);
err_i2c_bit_del_bus:
	i2c_bit_del_bus(&pluto->i2c_adap);
err_pluto_hw_exit:
	pluto_hw_exit(pluto);
err_free_irq:
	free_irq(pdev->irq, pluto);
err_pci_iounmap:
	pci_iounmap(pdev, pluto->io_mem);
err_pci_release_regions:
	pci_release_regions(pdev);
err_pci_disable_device:
	pci_disable_device(pdev);
err_kfree:
	pci_set_drvdata(pdev, NULL);
	kfree(pluto);
	goto out;
}

static void __devexit pluto2_remove(struct pci_dev *pdev)
{
	struct pluto *pluto = pci_get_drvdata(pdev);
	struct dvb_adapter *dvb_adapter = &pluto->dvb_adapter;
	struct dvb_demux *dvbdemux = &pluto->demux;
	struct dmx_demux *dmx = &dvbdemux->dmx;

	dmx->close(dmx);
	dvb_net_release(&pluto->dvbnet);
	if (pluto->fe)
		dvb_unregister_frontend(pluto->fe);

	dmx->disconnect_frontend(dmx);
	dmx->remove_frontend(dmx, &pluto->mem_frontend);
	dmx->remove_frontend(dmx, &pluto->hw_frontend);
	dvb_dmxdev_release(&pluto->dmxdev);
	dvb_dmx_release(dvbdemux);
	dvb_unregister_adapter(dvb_adapter);
	i2c_bit_del_bus(&pluto->i2c_adap);
	pluto_hw_exit(pluto);
	free_irq(pdev->irq, pluto);
	pci_iounmap(pdev, pluto->io_mem);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	pci_set_drvdata(pdev, NULL);
	kfree(pluto);
}

#ifndef PCI_VENDOR_ID_SCM
#define PCI_VENDOR_ID_SCM	0x0432
#endif
#ifndef PCI_DEVICE_ID_PLUTO2
#define PCI_DEVICE_ID_PLUTO2	0x0001
#endif

static struct pci_device_id pluto2_id_table[] __devinitdata = {
	{
		.vendor = PCI_VENDOR_ID_SCM,
		.device = PCI_DEVICE_ID_PLUTO2,
		.subvendor = PCI_ANY_ID,
		.subdevice = PCI_ANY_ID,
	}, {
		/* empty */
	},
};

MODULE_DEVICE_TABLE(pci, pluto2_id_table);

static struct pci_driver pluto2_driver = {
	.name = DRIVER_NAME,
	.id_table = pluto2_id_table,
	.probe = pluto2_probe,
	.remove = __devexit_p(pluto2_remove),
};

static int __init pluto2_init(void)
{
	return pci_register_driver(&pluto2_driver);
}

static void __exit pluto2_exit(void)
{
	pci_unregister_driver(&pluto2_driver);
}

module_init(pluto2_init);
module_exit(pluto2_exit);

MODULE_AUTHOR("Andreas Oberritter <obi@linuxtv.org>");
MODULE_DESCRIPTION("Pluto2 driver");
MODULE_LICENSE("GPL");