diff options
Diffstat (limited to 'drivers/media/video/cx231xx/cx231xx-cards.c')
| -rw-r--r-- | drivers/media/video/cx231xx/cx231xx-cards.c | 914 |
1 files changed, 914 insertions, 0 deletions
diff --git a/drivers/media/video/cx231xx/cx231xx-cards.c b/drivers/media/video/cx231xx/cx231xx-cards.c new file mode 100644 index 0000000..c8a32b1 --- /dev/null +++ b/drivers/media/video/cx231xx/cx231xx-cards.c @@ -0,0 +1,914 @@ +/* + 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/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 = 0, + }, { + .type = CX231XX_VMUX_COMPOSITE1, + .vmux = CX231XX_VIN_2_1, + .amux = CX231XX_AMUX_LINE_IN, + .gpio = 0, + }, { + .type = CX231XX_VMUX_SVIDEO, + .vmux = CX231XX_VIN_1_1 | + (CX231XX_VIN_1_2 << 8) | + CX25840_SVIDEO_ON, + .amux = CX231XX_AMUX_LINE_IN, + .gpio = 0, + } + }, + }, + [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 = 0, + }, { + .type = CX231XX_VMUX_COMPOSITE1, + .vmux = CX231XX_VIN_2_1, + .amux = CX231XX_AMUX_LINE_IN, + .gpio = 0, + }, { + .type = CX231XX_VMUX_SVIDEO, + .vmux = CX231XX_VIN_1_1 | + (CX231XX_VIN_1_2 << 8) | + CX25840_SVIDEO_ON, + .amux = CX231XX_AMUX_LINE_IN, + .gpio = 0, + } + }, + }, + + [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 = 0, + }, { + .type = CX231XX_VMUX_COMPOSITE1, + .vmux = CX231XX_VIN_2_1, + .amux = CX231XX_AMUX_LINE_IN, + .gpio = 0, + }, { + .type = CX231XX_VMUX_SVIDEO, + .vmux = CX231XX_VIN_1_1 | + (CX231XX_VIN_1_2 << 8) | + CX25840_SVIDEO_ON, + .amux = CX231XX_AMUX_LINE_IN, + .gpio = 0, + } + }, + }, +}; +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_set_ir(struct cx231xx *dev, struct IR_i2c *ir) +{ + if (disable_ir) { + ir->get_key = NULL; + return; + } + + /* 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); + 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); + 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 /dev/video%d is open! Deregistration and memory " + "deallocation are deferred on close.\n", dev->vdev->num); + + 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); |
