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path: root/drivers/media/dvb/siano/smsusb.c
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Diffstat (limited to 'drivers/media/dvb/siano/smsusb.c')
-rw-r--r--drivers/media/dvb/siano/smsusb.c459
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 000000000000..c10b1849c6a3
--- /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 3 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(&params, 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(&params, &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);
+}
+