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);
+}
+