diff options
Diffstat (limited to 'drivers/media/dvb/siano/smsusb.c')
| -rw-r--r-- | drivers/media/dvb/siano/smsusb.c | 459 |
1 files changed, 459 insertions, 0 deletions
diff --git a/drivers/media/dvb/siano/smsusb.c b/drivers/media/dvb/siano/smsusb.c new file mode 100644 index 00000000000..87a3c24454b --- /dev/null +++ b/drivers/media/dvb/siano/smsusb.c @@ -0,0 +1,459 @@ +/* + * Driver for the Siano SMS1xxx USB dongle + * + * author: Anatoly Greenblat + * + * Copyright (c), 2005-2008 Siano Mobile Silicon, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation; + * + * Software distributed under the License is distributed on an "AS IS" + * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. + * + * 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/kernel.h> +#include <linux/init.h> +#include <linux/usb.h> +#include <linux/firmware.h> + +#include "smscoreapi.h" +#include "sms-cards.h" + +#define USB1_BUFFER_SIZE 0x1000 +#define USB2_BUFFER_SIZE 0x4000 + +#define MAX_BUFFERS 50 +#define MAX_URBS 10 + +struct smsusb_device_t; + +struct smsusb_urb_t { + struct smscore_buffer_t *cb; + struct smsusb_device_t *dev; + + struct urb urb; +}; + +struct smsusb_device_t { + struct usb_device *udev; + struct smscore_device_t *coredev; + + struct smsusb_urb_t surbs[MAX_URBS]; + + int response_alignment; + int buffer_size; +}; + +static int smsusb_submit_urb(struct smsusb_device_t *dev, + struct smsusb_urb_t *surb); + +static void smsusb_onresponse(struct urb *urb) +{ + struct smsusb_urb_t *surb = (struct smsusb_urb_t *) urb->context; + struct smsusb_device_t *dev = surb->dev; + + if (urb->status < 0) { + sms_err("error, urb status %d, %d bytes", + urb->status, urb->actual_length); + return; + } + + if (urb->actual_length > 0) { + struct SmsMsgHdr_ST *phdr = (struct SmsMsgHdr_ST *) surb->cb->p; + + if (urb->actual_length >= phdr->msgLength) { + surb->cb->size = phdr->msgLength; + + if (dev->response_alignment && + (phdr->msgFlags & MSG_HDR_FLAG_SPLIT_MSG)) { + + surb->cb->offset = + dev->response_alignment + + ((phdr->msgFlags >> 8) & 3); + + /* sanity check */ + if (((int) phdr->msgLength + + surb->cb->offset) > urb->actual_length) { + sms_err("invalid response " + "msglen %d offset %d " + "size %d", + phdr->msgLength, + surb->cb->offset, + urb->actual_length); + goto exit_and_resubmit; + } + + /* move buffer pointer and + * copy header to its new location */ + memcpy((char *) phdr + surb->cb->offset, + phdr, sizeof(struct SmsMsgHdr_ST)); + } else + surb->cb->offset = 0; + + smscore_onresponse(dev->coredev, surb->cb); + surb->cb = NULL; + } else { + sms_err("invalid response " + "msglen %d actual %d", + phdr->msgLength, urb->actual_length); + } + } + +exit_and_resubmit: + smsusb_submit_urb(dev, surb); +} + +static int smsusb_submit_urb(struct smsusb_device_t *dev, + struct smsusb_urb_t *surb) +{ + if (!surb->cb) { + surb->cb = smscore_getbuffer(dev->coredev); + if (!surb->cb) { + sms_err("smscore_getbuffer(...) returned NULL"); + return -ENOMEM; + } + } + + usb_fill_bulk_urb( + &surb->urb, + dev->udev, + usb_rcvbulkpipe(dev->udev, 0x81), + surb->cb->p, + dev->buffer_size, + smsusb_onresponse, + surb + ); + surb->urb.transfer_dma = surb->cb->phys; + surb->urb.transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + + return usb_submit_urb(&surb->urb, GFP_ATOMIC); +} + +static void smsusb_stop_streaming(struct smsusb_device_t *dev) +{ + int i; + + for (i = 0; i < MAX_URBS; i++) { + usb_kill_urb(&dev->surbs[i].urb); + + if (dev->surbs[i].cb) { + smscore_putbuffer(dev->coredev, dev->surbs[i].cb); + dev->surbs[i].cb = NULL; + } + } +} + +static int smsusb_start_streaming(struct smsusb_device_t *dev) +{ + int i, rc; + + for (i = 0; i < MAX_URBS; i++) { + rc = smsusb_submit_urb(dev, &dev->surbs[i]); + if (rc < 0) { + sms_err("smsusb_submit_urb(...) failed"); + smsusb_stop_streaming(dev); + break; + } + } + + return rc; +} + +static int smsusb_sendrequest(void *context, void *buffer, size_t size) +{ + struct smsusb_device_t *dev = (struct smsusb_device_t *) context; + int dummy; + + return usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2), + buffer, size, &dummy, 1000); +} + +static char *smsusb1_fw_lkup[] = { + "dvbt_stellar_usb.inp", + "dvbh_stellar_usb.inp", + "tdmb_stellar_usb.inp", + "none", + "dvbt_bda_stellar_usb.inp", +}; + +static inline char *sms_get_fw_name(int mode, int board_id) +{ + char **fw = sms_get_board(board_id)->fw; + return (fw && fw[mode]) ? fw[mode] : smsusb1_fw_lkup[mode]; +} + +static int smsusb1_load_firmware(struct usb_device *udev, int id, int board_id) +{ + const struct firmware *fw; + u8 *fw_buffer; + int rc, dummy; + char *fw_filename; + + if (id < DEVICE_MODE_DVBT || id > DEVICE_MODE_DVBT_BDA) { + sms_err("invalid firmware id specified %d", id); + return -EINVAL; + } + + fw_filename = sms_get_fw_name(id, board_id); + + rc = request_firmware(&fw, fw_filename, &udev->dev); + if (rc < 0) { + sms_warn("failed to open \"%s\" mode %d, " + "trying again with default firmware", fw_filename, id); + + fw_filename = smsusb1_fw_lkup[id]; + rc = request_firmware(&fw, fw_filename, &udev->dev); + if (rc < 0) { + sms_warn("failed to open \"%s\" mode %d", + fw_filename, id); + + return rc; + } + } + + fw_buffer = kmalloc(fw->size, GFP_KERNEL); + if (fw_buffer) { + memcpy(fw_buffer, fw->data, fw->size); + + rc = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 2), + fw_buffer, fw->size, &dummy, 1000); + + sms_info("sent %zd(%d) bytes, rc %d", fw->size, dummy, rc); + + kfree(fw_buffer); + } else { + sms_err("failed to allocate firmware buffer"); + rc = -ENOMEM; + } + sms_info("read FW %s, size=%zd", fw_filename, fw->size); + + release_firmware(fw); + + return rc; +} + +static void smsusb1_detectmode(void *context, int *mode) +{ + char *product_string = + ((struct smsusb_device_t *) context)->udev->product; + + *mode = DEVICE_MODE_NONE; + + if (!product_string) { + product_string = "none"; + sms_err("product string not found"); + } else if (strstr(product_string, "DVBH")) + *mode = 1; + else if (strstr(product_string, "BDA")) + *mode = 4; + else if (strstr(product_string, "DVBT")) + *mode = 0; + else if (strstr(product_string, "TDMB")) + *mode = 2; + + sms_info("%d \"%s\"", *mode, product_string); +} + +static int smsusb1_setmode(void *context, int mode) +{ + struct SmsMsgHdr_ST Msg = { MSG_SW_RELOAD_REQ, 0, HIF_TASK, + sizeof(struct SmsMsgHdr_ST), 0 }; + + if (mode < DEVICE_MODE_DVBT || mode > DEVICE_MODE_DVBT_BDA) { + sms_err("invalid firmware id specified %d", mode); + return -EINVAL; + } + + return smsusb_sendrequest(context, &Msg, sizeof(Msg)); +} + +static void smsusb_term_device(struct usb_interface *intf) +{ + struct smsusb_device_t *dev = + (struct smsusb_device_t *) usb_get_intfdata(intf); + + if (dev) { + smsusb_stop_streaming(dev); + + /* unregister from smscore */ + if (dev->coredev) + smscore_unregister_device(dev->coredev); + + kfree(dev); + + sms_info("device %p destroyed", dev); + } + + usb_set_intfdata(intf, NULL); +} + +static int smsusb_init_device(struct usb_interface *intf, int board_id) +{ + struct smsdevice_params_t params; + struct smsusb_device_t *dev; + int i, rc; + + /* create device object */ + dev = kzalloc(sizeof(struct smsusb_device_t), GFP_KERNEL); + if (!dev) { + sms_err("kzalloc(sizeof(struct smsusb_device_t) failed"); + return -ENOMEM; + } + + memset(¶ms, 0, sizeof(params)); + usb_set_intfdata(intf, dev); + dev->udev = interface_to_usbdev(intf); + + params.device_type = sms_get_board(board_id)->type; + + switch (params.device_type) { + case SMS_STELLAR: + dev->buffer_size = USB1_BUFFER_SIZE; + + params.setmode_handler = smsusb1_setmode; + params.detectmode_handler = smsusb1_detectmode; + break; + default: + sms_err("Unspecified sms device type!"); + /* fall-thru */ + case SMS_NOVA_A0: + case SMS_NOVA_B0: + case SMS_VEGA: + dev->buffer_size = USB2_BUFFER_SIZE; + dev->response_alignment = + dev->udev->ep_in[1]->desc.wMaxPacketSize - + sizeof(struct SmsMsgHdr_ST); + + params.flags |= SMS_DEVICE_FAMILY2; + break; + } + + params.device = &dev->udev->dev; + params.buffer_size = dev->buffer_size; + params.num_buffers = MAX_BUFFERS; + params.sendrequest_handler = smsusb_sendrequest; + params.context = dev; + snprintf(params.devpath, sizeof(params.devpath), + "usb\\%d-%s", dev->udev->bus->busnum, dev->udev->devpath); + + /* register in smscore */ + rc = smscore_register_device(¶ms, &dev->coredev); + if (rc < 0) { + sms_err("smscore_register_device(...) failed, rc %d", rc); + smsusb_term_device(intf); + return rc; + } + + smscore_set_board_id(dev->coredev, board_id); + + /* initialize urbs */ + for (i = 0; i < MAX_URBS; i++) { + dev->surbs[i].dev = dev; + usb_init_urb(&dev->surbs[i].urb); + } + + sms_info("smsusb_start_streaming(...)."); + rc = smsusb_start_streaming(dev); + if (rc < 0) { + sms_err("smsusb_start_streaming(...) failed"); + smsusb_term_device(intf); + return rc; + } + + rc = smscore_start_device(dev->coredev); + if (rc < 0) { + sms_err("smscore_start_device(...) failed"); + smsusb_term_device(intf); + return rc; + } + + sms_info("device %p created", dev); + + return rc; +} + +static int smsusb_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *udev = interface_to_usbdev(intf); + char devpath[32]; + int i, rc; + + rc = usb_clear_halt(udev, usb_rcvbulkpipe(udev, 0x81)); + rc = usb_clear_halt(udev, usb_rcvbulkpipe(udev, 0x02)); + + if (intf->num_altsetting > 0) { + rc = usb_set_interface( + udev, intf->cur_altsetting->desc.bInterfaceNumber, 0); + if (rc < 0) { + sms_err("usb_set_interface failed, rc %d", rc); + return rc; + } + } + + sms_info("smsusb_probe %d", + intf->cur_altsetting->desc.bInterfaceNumber); + for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) + sms_info("endpoint %d %02x %02x %d", i, + intf->cur_altsetting->endpoint[i].desc.bEndpointAddress, + intf->cur_altsetting->endpoint[i].desc.bmAttributes, + intf->cur_altsetting->endpoint[i].desc.wMaxPacketSize); + + if ((udev->actconfig->desc.bNumInterfaces == 2) && + (intf->cur_altsetting->desc.bInterfaceNumber == 0)) { + sms_err("rom interface 0 is not used"); + return -ENODEV; + } + + if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { + snprintf(devpath, sizeof(devpath), "usb\\%d-%s", + udev->bus->busnum, udev->devpath); + sms_info("stellar device was found."); + return smsusb1_load_firmware( + udev, smscore_registry_getmode(devpath), + id->driver_info); + } + + rc = smsusb_init_device(intf, id->driver_info); + sms_info("rc %d", rc); + return rc; +} + +static void smsusb_disconnect(struct usb_interface *intf) +{ + smsusb_term_device(intf); +} + +static struct usb_driver smsusb_driver = { + .name = "sms1xxx", + .probe = smsusb_probe, + .disconnect = smsusb_disconnect, + .id_table = smsusb_id_table, +}; + +int smsusb_register(void) +{ + int rc = usb_register(&smsusb_driver); + if (rc) + sms_err("usb_register failed. Error number %d", rc); + + sms_debug(""); + + return rc; +} + +void smsusb_unregister(void) +{ + sms_debug(""); + /* Regular USB Cleanup */ + usb_deregister(&smsusb_driver); +} + |