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linux/drivers/media/video/cx231xx/cx231xx-cards.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

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/*
cx231xx-cards.c - driver for Conexant Cx23100/101/102
USB video capture devices
Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
Based on em28xx driver
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/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/usb.h>
#include <media/tuner.h>
#include <media/tveeprom.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
#include <media/cx25840.h>
#include "xc5000.h"
#include "cx231xx.h"
static int tuner = -1;
module_param(tuner, int, 0444);
MODULE_PARM_DESC(tuner, "tuner type");
static unsigned int disable_ir;
module_param(disable_ir, int, 0444);
MODULE_PARM_DESC(disable_ir, "disable infrared remote support");
/* Bitmask marking allocated devices from 0 to CX231XX_MAXBOARDS */
static unsigned long cx231xx_devused;
/*
* Reset sequences for analog/digital modes
*/
static struct cx231xx_reg_seq RDE250_XCV_TUNER[] = {
{0x03, 0x01, 10},
{0x03, 0x00, 30},
{0x03, 0x01, 10},
{-1, -1, -1},
};
/*
* Board definitions
*/
struct cx231xx_board cx231xx_boards[] = {
[CX231XX_BOARD_UNKNOWN] = {
.name = "Unknown CX231xx video grabber",
.tuner_type = TUNER_ABSENT,
.input = {{
.type = CX231XX_VMUX_TELEVISION,
.vmux = CX231XX_VIN_3_1,
.amux = CX231XX_AMUX_VIDEO,
.gpio = NULL,
}, {
.type = CX231XX_VMUX_COMPOSITE1,
.vmux = CX231XX_VIN_2_1,
.amux = CX231XX_AMUX_LINE_IN,
.gpio = NULL,
}, {
.type = CX231XX_VMUX_SVIDEO,
.vmux = CX231XX_VIN_1_1 |
(CX231XX_VIN_1_2 << 8) |
CX25840_SVIDEO_ON,
.amux = CX231XX_AMUX_LINE_IN,
.gpio = NULL,
}
},
},
[CX231XX_BOARD_CNXT_RDE_250] = {
.name = "Conexant Hybrid TV - RDE250",
.tuner_type = TUNER_XC5000,
.tuner_addr = 0x61,
.tuner_gpio = RDE250_XCV_TUNER,
.tuner_sif_gpio = 0x05,
.tuner_scl_gpio = 0x1a,
.tuner_sda_gpio = 0x1b,
.decoder = CX231XX_AVDECODER,
.demod_xfer_mode = 0,
.ctl_pin_status_mask = 0xFFFFFFC4,
.agc_analog_digital_select_gpio = 0x0c,
.gpio_pin_status_mask = 0x4001000,
.tuner_i2c_master = 1,
.demod_i2c_master = 2,
.has_dvb = 1,
.demod_addr = 0x02,
.norm = V4L2_STD_PAL,
.input = {{
.type = CX231XX_VMUX_TELEVISION,
.vmux = CX231XX_VIN_3_1,
.amux = CX231XX_AMUX_VIDEO,
.gpio = NULL,
}, {
.type = CX231XX_VMUX_COMPOSITE1,
.vmux = CX231XX_VIN_2_1,
.amux = CX231XX_AMUX_LINE_IN,
.gpio = NULL,
}, {
.type = CX231XX_VMUX_SVIDEO,
.vmux = CX231XX_VIN_1_1 |
(CX231XX_VIN_1_2 << 8) |
CX25840_SVIDEO_ON,
.amux = CX231XX_AMUX_LINE_IN,
.gpio = NULL,
}
},
},
[CX231XX_BOARD_CNXT_RDU_250] = {
.name = "Conexant Hybrid TV - RDU250",
.tuner_type = TUNER_XC5000,
.tuner_addr = 0x61,
.tuner_gpio = RDE250_XCV_TUNER,
.tuner_sif_gpio = 0x05,
.tuner_scl_gpio = 0x1a,
.tuner_sda_gpio = 0x1b,
.decoder = CX231XX_AVDECODER,
.demod_xfer_mode = 0,
.ctl_pin_status_mask = 0xFFFFFFC4,
.agc_analog_digital_select_gpio = 0x0c,
.gpio_pin_status_mask = 0x4001000,
.tuner_i2c_master = 1,
.demod_i2c_master = 2,
.has_dvb = 1,
.demod_addr = 0x32,
.norm = V4L2_STD_NTSC,
.input = {{
.type = CX231XX_VMUX_TELEVISION,
.vmux = CX231XX_VIN_3_1,
.amux = CX231XX_AMUX_VIDEO,
.gpio = NULL,
}, {
.type = CX231XX_VMUX_COMPOSITE1,
.vmux = CX231XX_VIN_2_1,
.amux = CX231XX_AMUX_LINE_IN,
.gpio = NULL,
}, {
.type = CX231XX_VMUX_SVIDEO,
.vmux = CX231XX_VIN_1_1 |
(CX231XX_VIN_1_2 << 8) |
CX25840_SVIDEO_ON,
.amux = CX231XX_AMUX_LINE_IN,
.gpio = NULL,
}
},
},
};
const unsigned int cx231xx_bcount = ARRAY_SIZE(cx231xx_boards);
/* table of devices that work with this driver */
struct usb_device_id cx231xx_id_table[] = {
{USB_DEVICE(0x0572, 0x5A3C),
.driver_info = CX231XX_BOARD_UNKNOWN},
{USB_DEVICE(0x0572, 0x58A2),
.driver_info = CX231XX_BOARD_CNXT_RDE_250},
{USB_DEVICE(0x0572, 0x58A1),
.driver_info = CX231XX_BOARD_CNXT_RDU_250},
{},
};
MODULE_DEVICE_TABLE(usb, cx231xx_id_table);
/* cx231xx_tuner_callback
* will be used to reset XC5000 tuner using GPIO pin
*/
int cx231xx_tuner_callback(void *ptr, int component, int command, int arg)
{
int rc = 0;
struct cx231xx *dev = ptr;
if (dev->tuner_type == TUNER_XC5000) {
if (command == XC5000_TUNER_RESET) {
cx231xx_info
("Tuner CB: RESET: cmd %d : tuner type %d \n",
command, dev->tuner_type);
cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit,
1);
msleep(10);
cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit,
0);
msleep(330);
cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit,
1);
msleep(10);
}
}
return rc;
}
EXPORT_SYMBOL_GPL(cx231xx_tuner_callback);
static inline void cx231xx_set_model(struct cx231xx *dev)
{
memcpy(&dev->board, &cx231xx_boards[dev->model], sizeof(dev->board));
}
/* Since cx231xx_pre_card_setup() requires a proper dev->model,
* this won't work for boards with generic PCI IDs
*/
void cx231xx_pre_card_setup(struct cx231xx *dev)
{
cx231xx_set_model(dev);
cx231xx_info("Identified as %s (card=%d)\n",
dev->board.name, dev->model);
/* set the direction for GPIO pins */
cx231xx_set_gpio_direction(dev, dev->board.tuner_gpio->bit, 1);
cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit, 1);
cx231xx_set_gpio_direction(dev, dev->board.tuner_sif_gpio, 1);
/* request some modules if any required */
/* reset the Tuner */
cx231xx_gpio_set(dev, dev->board.tuner_gpio);
/* set the mode to Analog mode initially */
cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
/* Unlock device */
/* cx231xx_set_mode(dev, CX231XX_SUSPEND); */
}
static void cx231xx_config_tuner(struct cx231xx *dev)
{
struct tuner_setup tun_setup;
struct v4l2_frequency f;
if (dev->tuner_type == TUNER_ABSENT)
return;
tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
tun_setup.type = dev->tuner_type;
tun_setup.addr = dev->tuner_addr;
tun_setup.tuner_callback = cx231xx_tuner_callback;
tuner_call(dev, tuner, s_type_addr, &tun_setup);
#if 0
if (tun_setup.type == TUNER_XC5000) {
static struct xc2028_ctrl ctrl = {
.fname = XC5000_DEFAULT_FIRMWARE,
.max_len = 64,
.demod = 0;
};
struct v4l2_priv_tun_config cfg = {
.tuner = dev->tuner_type,
.priv = &ctrl,
};
tuner_call(dev, tuner, s_config, &cfg);
}
#endif
/* configure tuner */
f.tuner = 0;
f.type = V4L2_TUNER_ANALOG_TV;
f.frequency = 9076; /* just a magic number */
dev->ctl_freq = f.frequency;
call_all(dev, tuner, s_frequency, &f);
}
/* ----------------------------------------------------------------------- */
void cx231xx_register_i2c_ir(struct cx231xx *dev)
{
if (disable_ir)
return;
/* REVISIT: instantiate IR device */
/* detect & configure */
switch (dev->model) {
case CX231XX_BOARD_CNXT_RDE_250:
break;
case CX231XX_BOARD_CNXT_RDU_250:
break;
default:
break;
}
}
void cx231xx_card_setup(struct cx231xx *dev)
{
cx231xx_set_model(dev);
dev->tuner_type = cx231xx_boards[dev->model].tuner_type;
if (cx231xx_boards[dev->model].tuner_addr)
dev->tuner_addr = cx231xx_boards[dev->model].tuner_addr;
/* request some modules */
if (dev->board.decoder == CX231XX_AVDECODER) {
dev->sd_cx25840 = v4l2_i2c_new_subdev(&dev->v4l2_dev,
&dev->i2c_bus[0].i2c_adap,
"cx25840", "cx25840", 0x88 >> 1, NULL);
if (dev->sd_cx25840 == NULL)
cx231xx_info("cx25840 subdev registration failure\n");
cx25840_call(dev, core, load_fw);
}
if (dev->board.tuner_type != TUNER_ABSENT) {
dev->sd_tuner = v4l2_i2c_new_subdev(&dev->v4l2_dev,
&dev->i2c_bus[1].i2c_adap,
"tuner", "tuner", 0xc2 >> 1, NULL);
if (dev->sd_tuner == NULL)
cx231xx_info("tuner subdev registration failure\n");
cx231xx_config_tuner(dev);
}
cx231xx_config_tuner(dev);
#if 0
/* TBD IR will be added later */
cx231xx_ir_init(dev);
#endif
}
/*
* cx231xx_config()
* inits registers with sane defaults
*/
int cx231xx_config(struct cx231xx *dev)
{
/* TBD need to add cx231xx specific code */
dev->mute = 1; /* maybe not the right place... */
dev->volume = 0x1f;
return 0;
}
/*
* cx231xx_config_i2c()
* configure i2c attached devices
*/
void cx231xx_config_i2c(struct cx231xx *dev)
{
/* u32 input = INPUT(dev->video_input)->vmux; */
call_all(dev, video, s_stream, 1);
}
/*
* cx231xx_realease_resources()
* unregisters the v4l2,i2c and usb devices
* called when the device gets disconected or at module unload
*/
void cx231xx_release_resources(struct cx231xx *dev)
{
#if 0 /* TBD IR related */
if (dev->ir)
cx231xx_ir_fini(dev);
#endif
cx231xx_release_analog_resources(dev);
cx231xx_remove_from_devlist(dev);
cx231xx_dev_uninit(dev);
usb_put_dev(dev->udev);
/* Mark device as unused */
cx231xx_devused &= ~(1 << dev->devno);
}
/*
* cx231xx_init_dev()
* allocates and inits the device structs, registers i2c bus and v4l device
*/
static int cx231xx_init_dev(struct cx231xx **devhandle, struct usb_device *udev,
int minor)
{
struct cx231xx *dev = *devhandle;
int retval = -ENOMEM;
int errCode;
unsigned int maxh, maxw;
dev->udev = udev;
mutex_init(&dev->lock);
mutex_init(&dev->ctrl_urb_lock);
mutex_init(&dev->gpio_i2c_lock);
spin_lock_init(&dev->video_mode.slock);
spin_lock_init(&dev->vbi_mode.slock);
spin_lock_init(&dev->sliced_cc_mode.slock);
init_waitqueue_head(&dev->open);
init_waitqueue_head(&dev->wait_frame);
init_waitqueue_head(&dev->wait_stream);
dev->cx231xx_read_ctrl_reg = cx231xx_read_ctrl_reg;
dev->cx231xx_write_ctrl_reg = cx231xx_write_ctrl_reg;
dev->cx231xx_send_usb_command = cx231xx_send_usb_command;
dev->cx231xx_gpio_i2c_read = cx231xx_gpio_i2c_read;
dev->cx231xx_gpio_i2c_write = cx231xx_gpio_i2c_write;
/* Query cx231xx to find what pcb config it is related to */
initialize_cx231xx(dev);
/* Cx231xx pre card setup */
cx231xx_pre_card_setup(dev);
errCode = cx231xx_config(dev);
if (errCode) {
cx231xx_errdev("error configuring device\n");
return -ENOMEM;
}
/* set default norm */
dev->norm = dev->board.norm;
/* register i2c bus */
errCode = cx231xx_dev_init(dev);
if (errCode < 0) {
cx231xx_errdev("%s: cx231xx_i2c_register - errCode [%d]!\n",
__func__, errCode);
return errCode;
}
/* Do board specific init */
cx231xx_card_setup(dev);
/* configure the device */
cx231xx_config_i2c(dev);
maxw = norm_maxw(dev);
maxh = norm_maxh(dev);
/* set default image size */
dev->width = maxw;
dev->height = maxh;
dev->interlaced = 0;
dev->hscale = 0;
dev->vscale = 0;
dev->video_input = 0;
errCode = cx231xx_config(dev);
if (errCode < 0) {
cx231xx_errdev("%s: cx231xx_config - errCode [%d]!\n",
__func__, errCode);
return errCode;
}
/* init video dma queues */
INIT_LIST_HEAD(&dev->video_mode.vidq.active);
INIT_LIST_HEAD(&dev->video_mode.vidq.queued);
/* init vbi dma queues */
INIT_LIST_HEAD(&dev->vbi_mode.vidq.active);
INIT_LIST_HEAD(&dev->vbi_mode.vidq.queued);
/* Reset other chips required if they are tied up with GPIO pins */
cx231xx_add_into_devlist(dev);
retval = cx231xx_register_analog_devices(dev);
if (retval < 0) {
cx231xx_release_resources(dev);
goto fail_reg_devices;
}
cx231xx_init_extension(dev);
return 0;
fail_reg_devices:
mutex_unlock(&dev->lock);
return retval;
}
#if defined(CONFIG_MODULES) && defined(MODULE)
static void request_module_async(struct work_struct *work)
{
struct cx231xx *dev = container_of(work,
struct cx231xx, request_module_wk);
if (dev->has_alsa_audio)
request_module("cx231xx-alsa");
if (dev->board.has_dvb)
request_module("cx231xx-dvb");
}
static void request_modules(struct cx231xx *dev)
{
INIT_WORK(&dev->request_module_wk, request_module_async);
schedule_work(&dev->request_module_wk);
}
#else
#define request_modules(dev)
#endif /* CONFIG_MODULES */
/*
* cx231xx_usb_probe()
* checks for supported devices
*/
static int cx231xx_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_device *udev;
struct usb_interface *uif;
struct cx231xx *dev = NULL;
int retval = -ENODEV;
int nr = 0, ifnum;
int i, isoc_pipe = 0;
char *speed;
char descr[255] = "";
struct usb_interface *lif = NULL;
int skip_interface = 0;
struct usb_interface_assoc_descriptor *assoc_desc;
udev = usb_get_dev(interface_to_usbdev(interface));
ifnum = interface->altsetting[0].desc.bInterfaceNumber;
if (!ifnum) {
/*
* Interface number 0 - IR interface
*/
/* Check to see next free device and mark as used */
nr = find_first_zero_bit(&cx231xx_devused, CX231XX_MAXBOARDS);
cx231xx_devused |= 1 << nr;
if (nr >= CX231XX_MAXBOARDS) {
cx231xx_err(DRIVER_NAME ": Supports only %i cx231xx boards.\n",
CX231XX_MAXBOARDS);
cx231xx_devused &= ~(1 << nr);
return -ENOMEM;
}
/* allocate memory for our device state and initialize it */
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
cx231xx_err(DRIVER_NAME ": out of memory!\n");
cx231xx_devused &= ~(1 << nr);
return -ENOMEM;
}
snprintf(dev->name, 29, "cx231xx #%d", nr);
dev->devno = nr;
dev->model = id->driver_info;
dev->video_mode.alt = -1;
dev->interface_count++;
/* reset gpio dir and value */
dev->gpio_dir = 0;
dev->gpio_val = 0;
dev->xc_fw_load_done = 0;
dev->has_alsa_audio = 1;
dev->power_mode = -1;
/* 0 - vbi ; 1 -sliced cc mode */
dev->vbi_or_sliced_cc_mode = 0;
/* get maximum no.of IAD interfaces */
assoc_desc = udev->actconfig->intf_assoc[0];
dev->max_iad_interface_count = assoc_desc->bInterfaceCount;
/* init CIR module TBD */
/* store the current interface */
lif = interface;
switch (udev->speed) {
case USB_SPEED_LOW:
speed = "1.5";
break;
case USB_SPEED_UNKNOWN:
case USB_SPEED_FULL:
speed = "12";
break;
case USB_SPEED_HIGH:
speed = "480";
break;
default:
speed = "unknown";
}
if (udev->manufacturer)
strlcpy(descr, udev->manufacturer, sizeof(descr));
if (udev->product) {
if (*descr)
strlcat(descr, " ", sizeof(descr));
strlcat(descr, udev->product, sizeof(descr));
}
if (*descr)
strlcat(descr, " ", sizeof(descr));
cx231xx_info("New device %s@ %s Mbps "
"(%04x:%04x) with %d interfaces\n",
descr,
speed,
le16_to_cpu(udev->descriptor.idVendor),
le16_to_cpu(udev->descriptor.idProduct),
dev->max_iad_interface_count);
} else {
/* Get dev structure first */
dev = usb_get_intfdata(udev->actconfig->interface[0]);
if (dev == NULL) {
cx231xx_err(DRIVER_NAME ": out of first interface!\n");
return -ENODEV;
}
/* store the interface 0 back */
lif = udev->actconfig->interface[0];
/* increment interface count */
dev->interface_count++;
/* get device number */
nr = dev->devno;
/*
* set skip interface, for all interfaces but
* interface 1 and the last one
*/
if ((ifnum != 1) && ((dev->interface_count - 1)
!= dev->max_iad_interface_count))
skip_interface = 1;
if (ifnum == 1) {
assoc_desc = udev->actconfig->intf_assoc[0];
if (assoc_desc->bFirstInterface != ifnum) {
cx231xx_err(DRIVER_NAME ": Not found "
"matching IAD interface\n");
return -ENODEV;
}
}
}
if (skip_interface)
return -ENODEV;
cx231xx_info("registering interface %d\n", ifnum);
/* save our data pointer in this interface device */
usb_set_intfdata(lif, dev);
if ((dev->interface_count - 1) != dev->max_iad_interface_count)
return 0;
/*
* AV device initialization - only done at the last interface
*/
/* Create v4l2 device */
retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
if (retval) {
cx231xx_errdev("v4l2_device_register failed\n");
cx231xx_devused &= ~(1 << nr);
kfree(dev);
return -EIO;
}
/* allocate device struct */
retval = cx231xx_init_dev(&dev, udev, nr);
if (retval) {
cx231xx_devused &= ~(1 << dev->devno);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
return retval;
}
/* compute alternate max packet sizes for video */
uif = udev->actconfig->interface[dev->current_pcb_config.
hs_config_info[0].interface_info.video_index + 1];
dev->video_mode.end_point_addr = le16_to_cpu(uif->altsetting[0].
endpoint[isoc_pipe].desc.bEndpointAddress);
dev->video_mode.num_alt = uif->num_altsetting;
cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n",
dev->video_mode.end_point_addr,
dev->video_mode.num_alt);
dev->video_mode.alt_max_pkt_size =
kmalloc(32 * dev->video_mode.num_alt, GFP_KERNEL);
if (dev->video_mode.alt_max_pkt_size == NULL) {
cx231xx_errdev("out of memory!\n");
cx231xx_devused &= ~(1 << nr);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
return -ENOMEM;
}
for (i = 0; i < dev->video_mode.num_alt; i++) {
u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].
desc.wMaxPacketSize);
dev->video_mode.alt_max_pkt_size[i] =
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
cx231xx_info("Alternate setting %i, max size= %i\n", i,
dev->video_mode.alt_max_pkt_size[i]);
}
/* compute alternate max packet sizes for vbi */
uif = udev->actconfig->interface[dev->current_pcb_config.
hs_config_info[0].interface_info.
vanc_index + 1];
dev->vbi_mode.end_point_addr =
le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].desc.
bEndpointAddress);
dev->vbi_mode.num_alt = uif->num_altsetting;
cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n",
dev->vbi_mode.end_point_addr,
dev->vbi_mode.num_alt);
dev->vbi_mode.alt_max_pkt_size =
kmalloc(32 * dev->vbi_mode.num_alt, GFP_KERNEL);
if (dev->vbi_mode.alt_max_pkt_size == NULL) {
cx231xx_errdev("out of memory!\n");
cx231xx_devused &= ~(1 << nr);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
return -ENOMEM;
}
for (i = 0; i < dev->vbi_mode.num_alt; i++) {
u16 tmp =
le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].
desc.wMaxPacketSize);
dev->vbi_mode.alt_max_pkt_size[i] =
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
cx231xx_info("Alternate setting %i, max size= %i\n", i,
dev->vbi_mode.alt_max_pkt_size[i]);
}
/* compute alternate max packet sizes for sliced CC */
uif = udev->actconfig->interface[dev->current_pcb_config.
hs_config_info[0].interface_info.
hanc_index + 1];
dev->sliced_cc_mode.end_point_addr =
le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].desc.
bEndpointAddress);
dev->sliced_cc_mode.num_alt = uif->num_altsetting;
cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n",
dev->sliced_cc_mode.end_point_addr,
dev->sliced_cc_mode.num_alt);
dev->sliced_cc_mode.alt_max_pkt_size =
kmalloc(32 * dev->sliced_cc_mode.num_alt, GFP_KERNEL);
if (dev->sliced_cc_mode.alt_max_pkt_size == NULL) {
cx231xx_errdev("out of memory!\n");
cx231xx_devused &= ~(1 << nr);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
return -ENOMEM;
}
for (i = 0; i < dev->sliced_cc_mode.num_alt; i++) {
u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].
desc.wMaxPacketSize);
dev->sliced_cc_mode.alt_max_pkt_size[i] =
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
cx231xx_info("Alternate setting %i, max size= %i\n", i,
dev->sliced_cc_mode.alt_max_pkt_size[i]);
}
if (dev->current_pcb_config.ts1_source != 0xff) {
/* compute alternate max packet sizes for TS1 */
uif = udev->actconfig->interface[dev->current_pcb_config.
hs_config_info[0].
interface_info.
ts1_index + 1];
dev->ts1_mode.end_point_addr =
le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].
desc.bEndpointAddress);
dev->ts1_mode.num_alt = uif->num_altsetting;
cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n",
dev->ts1_mode.end_point_addr,
dev->ts1_mode.num_alt);
dev->ts1_mode.alt_max_pkt_size =
kmalloc(32 * dev->ts1_mode.num_alt, GFP_KERNEL);
if (dev->ts1_mode.alt_max_pkt_size == NULL) {
cx231xx_errdev("out of memory!\n");
cx231xx_devused &= ~(1 << nr);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
return -ENOMEM;
}
for (i = 0; i < dev->ts1_mode.num_alt; i++) {
u16 tmp = le16_to_cpu(uif->altsetting[i].
endpoint[isoc_pipe].desc.
wMaxPacketSize);
dev->ts1_mode.alt_max_pkt_size[i] =
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
cx231xx_info("Alternate setting %i, max size= %i\n", i,
dev->ts1_mode.alt_max_pkt_size[i]);
}
}
/* load other modules required */
request_modules(dev);
return 0;
}
/*
* cx231xx_usb_disconnect()
* called when the device gets diconencted
* video device will be unregistered on v4l2_close in case it is still open
*/
static void cx231xx_usb_disconnect(struct usb_interface *interface)
{
struct cx231xx *dev;
dev = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
if (!dev)
return;
if (!dev->udev)
return;
/* delete v4l2 device */
v4l2_device_unregister(&dev->v4l2_dev);
/* wait until all current v4l2 io is finished then deallocate
resources */
mutex_lock(&dev->lock);
wake_up_interruptible_all(&dev->open);
if (dev->users) {
cx231xx_warn
("device %s is open! Deregistration and memory "
"deallocation are deferred on close.\n",
video_device_node_name(dev->vdev));
dev->state |= DEV_MISCONFIGURED;
cx231xx_uninit_isoc(dev);
dev->state |= DEV_DISCONNECTED;
wake_up_interruptible(&dev->wait_frame);
wake_up_interruptible(&dev->wait_stream);
} else {
dev->state |= DEV_DISCONNECTED;
cx231xx_release_resources(dev);
}
cx231xx_close_extension(dev);
mutex_unlock(&dev->lock);
if (!dev->users) {
kfree(dev->video_mode.alt_max_pkt_size);
kfree(dev->vbi_mode.alt_max_pkt_size);
kfree(dev->sliced_cc_mode.alt_max_pkt_size);
kfree(dev->ts1_mode.alt_max_pkt_size);
kfree(dev);
}
}
static struct usb_driver cx231xx_usb_driver = {
.name = "cx231xx",
.probe = cx231xx_usb_probe,
.disconnect = cx231xx_usb_disconnect,
.id_table = cx231xx_id_table,
};
static int __init cx231xx_module_init(void)
{
int result;
printk(KERN_INFO DRIVER_NAME " v4l2 driver loaded.\n");
/* register this driver with the USB subsystem */
result = usb_register(&cx231xx_usb_driver);
if (result)
cx231xx_err(DRIVER_NAME
" usb_register failed. Error number %d.\n", result);
return result;
}
static void __exit cx231xx_module_exit(void)
{
/* deregister this driver with the USB subsystem */
usb_deregister(&cx231xx_usb_driver);
}
module_init(cx231xx_module_init);
module_exit(cx231xx_module_exit);
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