/*
 * 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.
 *
 */

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

#include <media/demux.h>
#include <media/dmxdev.h>
#include <media/dvb_demux.h>
#include <media/dvb_frontend.h>
#include <media/dvb_net.h>
#include <media/dvbdev.h>
#include "tda1004x.h"

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

#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;
        unsigned int dead;

        /* 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_write_tscr(struct pluto *pluto, u32 val)
{
        /* set the number of packets */
        val &= ~TSCR_ADEF;
        val |= TS_DMA_PACKETS / 2;

        pluto_writereg(pluto, REG_TSCR, val);
}

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_write_tscr(pluto, val);
        }
        if (reenable) {
                val |= TSCR_RSTN;
                pluto_write_tscr(pluto, val);
        }
}

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

static int 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->pdev, 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 transferred.
         * [2] Sometimes (actually very often) NBPACKETS stays at zero
         *     although one packet has been transferred.
         * [3] Sometimes (actually rarely), the card gets into an erroneous
         *     mode where it continuously generates interrupts, claiming it
         *     has received nbpackets>TS_DMA_PACKETS packets, but no packet
         *     has been transferred. Only a reset seems to solve this
         */
        if ((nbpackets == 0) || (nbpackets > TS_DMA_PACKETS)) {
                unsigned int i = 0;
                while (pluto->dma_buf[i] == 0x47)
                        i += 188;
                nbpackets = i / 188;
                if (i == 0) {
                        pluto_reset_ts(pluto, 1);
                        dev_printk(KERN_DEBUG, &pluto->pdev->dev, "resetting TS because of invalid packet counter\n");
                }
        }

        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 pluto *pluto = dev_id;
        u32 tscr;

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

        if (tscr == 0xffffffff) {
                if (pluto->dead == 0)
                        dev_err(&pluto->pdev->dev, "card has hung or been ejected.\n");
                /* It's dead Jim */
                pluto->dead = 1;
                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_write_tscr(pluto, tscr | TSCR_IACK);

        return IRQ_HANDLED;
}

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

        /* 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_write_tscr(pluto, 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_write_tscr(pluto, val);
}

static int 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 endianness */
#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 DIV_ROUND_CLOSEST(numerator, denominator);
}

/* LG Innotek TDTE-E001P (Infineon TUA6034) */
static int lg_tdtpe001p_tuner_set_params(struct dvb_frontend *fe)
{
        struct dtv_frontend_properties *p = &fe->dtv_property_cache;
        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->bandwidth_hz == 8000000)
                buf[3] |= 0x08;

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

        if (fe->ops.i2c_gate_ctrl)
                fe->ops.i2c_gate_ctrl(fe, 1);
        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 = {
        .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,
        .request_firmware = pluto2_request_firmware,
};

static int 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;
        }
        pluto->fe->ops.tuner_ops.set_params = lg_tdtpe001p_tuner_set_params;

        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 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 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 %pM\n", mac);
}

static int 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(KERN_CONT "%c", val & 0xff);
                        val >>= 8;
                }
        }
out:
        printk(KERN_CONT "\n");
        pci_iounmap(pdev, cis);

        return 0;
}

static int 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_BIT_MASK(32));
        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, IRQF_SHARED, 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.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, &pdev->dev, adapter_nr);
        if (ret < 0)
                goto err_i2c_del_adapter;

        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_del_adapter:
        i2c_del_adapter(&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:
        kfree(pluto);
        goto out;
}

static void 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_del_adapter(&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);
        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 const struct pci_device_id pluto2_id_table[] = {
        {
                .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 = pluto2_remove,
};

module_pci_driver(pluto2_driver);

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