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kernel_optimize_test/drivers/media/dvb/pluto2/pluto2.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

804 lines
19 KiB
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/*
* 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 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_tuner_set_params(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);
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 __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,
.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;
}
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 __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, 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.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, &pdev->dev);
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");
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