linux/drivers/media/dvb/siano/smsusb.c

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/*
* Driver for the Siano SMS10xx 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"
#define USB1_BUFFER_SIZE 0x1000
#define USB2_BUFFER_SIZE 0x4000
#define MAX_BUFFERS 50
#define MAX_URBS 10
/* TO DO: move these to a header file */
#define USB_VID_SIANO 0x187f
#define USB_PID_STELLAR 0x0100
#define USB_PID_NOVA_A 0x0200
#define USB_PID_NOVA_B 0x0201
#define USB_PID_VEGA 0x0300
typedef struct _smsusb_device smsusb_device_t;
typedef struct _smsusb_urb
{
smscore_buffer_t *cb;
smsusb_device_t *dev;
struct urb urb;
} smsusb_urb_t;
typedef struct _smsusb_device
{
struct usb_device *udev;
smscore_device_t *coredev;
smsusb_urb_t surbs[MAX_URBS];
int response_alignment;
int buffer_size;
} *psmsusb_device_t;
int smsusb_submit_urb(smsusb_device_t *dev, smsusb_urb_t *surb);
void smsusb_onresponse(struct urb *urb)
{
smsusb_urb_t *surb = (smsusb_urb_t *) urb->context;
smsusb_device_t *dev = surb->dev;
if (urb->status < 0)
{
printk(KERN_INFO "%s error, urb status %d, %d bytes\n", __func__, urb->status, urb->actual_length);
return;
}
if (urb->actual_length > 0)
{
SmsMsgHdr_ST *phdr = (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)
{
printk("%s: invalid response msglen %d offset %d size %d\n", __func__, 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(SmsMsgHdr_ST));
}
else
surb->cb->offset = 0;
smscore_onresponse(dev->coredev, surb->cb);
surb->cb = NULL;
}
else
{
printk("%s invalid response msglen %d actual %d\n", __func__, phdr->msgLength, urb->actual_length);
}
}
exit_and_resubmit:
smsusb_submit_urb(dev, surb);
}
int smsusb_submit_urb(smsusb_device_t *dev, smsusb_urb_t *surb)
{
if (!surb->cb)
{
surb->cb = smscore_getbuffer(dev->coredev);
if (!surb->cb)
{
printk(KERN_INFO "%s smscore_getbuffer(...) returned NULL\n", __func__);
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);
}
void smsusb_stop_streaming(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;
}
}
}
int smsusb_start_streaming(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)
{
printk(KERN_INFO "%s smsusb_submit_urb(...) failed\n", __func__);
smsusb_stop_streaming(dev);
break;
}
}
return rc;
}
int smsusb_sendrequest(void *context, void *buffer, size_t size)
{
smsusb_device_t *dev = (smsusb_device_t *) context;
int dummy;
return usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2), buffer, size, &dummy, 1000);
}
char *smsusb1_fw_lkup[] =
{
"dvbt_stellar_usb.inp",
"dvbh_stellar_usb.inp",
"tdmb_stellar_usb.inp",
"none",
"dvbt_bda_stellar_usb.inp",
};
int smsusb1_load_firmware(struct usb_device *udev, int id)
{
const struct firmware *fw;
u8 *fw_buffer;
int rc, dummy;
if (id < DEVICE_MODE_DVBT || id > DEVICE_MODE_DVBT_BDA)
{
printk(KERN_INFO "%s invalid firmware id specified %d\n", __func__, id);
return -EINVAL;
}
rc = request_firmware(&fw, smsusb1_fw_lkup[id], &udev->dev);
if (rc < 0)
{
printk(KERN_INFO "%s failed to open \"%s\" mode %d\n", __func__, smsusb1_fw_lkup[id], 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);
printk(KERN_INFO "%s: sent %d(%d) bytes, rc %d\n", __func__, fw->size, dummy, rc);
kfree(fw_buffer);
}
else
{
printk(KERN_INFO "failed to allocate firmware buffer\n");
rc = -ENOMEM;
}
release_firmware(fw);
return rc;
}
void smsusb1_detectmode(void *context, int *mode)
{
char *product_string = ((smsusb_device_t *) context)->udev->product;
*mode = DEVICE_MODE_NONE;
if (!product_string)
{
product_string = "none";
printk("%s product string not found\n", __func__);
}
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;
}
printk("%s: %d \"%s\"\n", __func__, *mode, product_string);
}
int smsusb1_setmode(void *context, int mode)
{
SmsMsgHdr_ST Msg = { MSG_SW_RELOAD_REQ, 0, HIF_TASK, sizeof(SmsMsgHdr_ST), 0 };
if (mode < DEVICE_MODE_DVBT || mode > DEVICE_MODE_DVBT_BDA)
{
printk(KERN_INFO "%s invalid firmware id specified %d\n", __func__, mode);
return -EINVAL;
}
return smsusb_sendrequest(context, &Msg, sizeof(Msg));
}
void smsusb_term_device(struct usb_interface *intf)
{
smsusb_device_t *dev = (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);
printk(KERN_INFO "%s device %p destroyed\n", __func__, dev);
}
usb_set_intfdata(intf, NULL);
}
int smsusb_init_device(struct usb_interface *intf)
{
smsdevice_params_t params;
smsusb_device_t *dev;
int i, rc;
// create device object
dev = kzalloc(sizeof(smsusb_device_t), GFP_KERNEL);
if (!dev)
{
printk(KERN_INFO "%s kzalloc(sizeof(smsusb_device_t) failed\n", __func__);
return -ENOMEM;
}
memset(&params, 0, sizeof(params));
usb_set_intfdata(intf, dev);
dev->udev = interface_to_usbdev(intf);
switch (dev->udev->descriptor.idProduct) {
case USB_PID_STELLAR:
dev->buffer_size = USB1_BUFFER_SIZE;
params.setmode_handler = smsusb1_setmode;
params.detectmode_handler = smsusb1_detectmode;
params.device_type = SMS_STELLAR;
printk(KERN_INFO "%s stellar device found\n", __func__ );
break;
default:
switch (dev->udev->descriptor.idProduct) {
case USB_PID_NOVA_A:
params.device_type = SMS_NOVA_A0;
printk(KERN_INFO "%s nova A0 found\n", __func__ );
break;
default:
case USB_PID_NOVA_B:
params.device_type = SMS_NOVA_B0;
printk(KERN_INFO "%s nova B0 found\n", __func__);
break;
case USB_PID_VEGA:
params.device_type = SMS_VEGA;
printk(KERN_INFO "%s Vega found\n", __func__);
}
dev->buffer_size = USB2_BUFFER_SIZE;
dev->response_alignment = dev->udev->ep_in[1]->desc.wMaxPacketSize - sizeof(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)
{
printk(KERN_INFO "%s smscore_register_device(...) failed, rc %d\n", __func__, rc);
smsusb_term_device(intf);
return rc;
}
// initialize urbs
for (i = 0; i < MAX_URBS; i ++)
{
dev->surbs[i].dev = dev;
usb_init_urb(&dev->surbs[i].urb);
}
printk(KERN_INFO "%s smsusb_start_streaming(...).\n", __func__);
rc = smsusb_start_streaming(dev);
if (rc < 0)
{
printk(KERN_INFO "%s smsusb_start_streaming(...) failed\n", __func__);
smsusb_term_device(intf);
return rc;
}
rc = smscore_start_device(dev->coredev);
if (rc < 0)
{
printk(KERN_INFO "%s smscore_start_device(...) failed\n", __func__);
smsusb_term_device(intf);
return rc;
}
printk(KERN_INFO "%s device %p created\n", __func__, dev);
return rc;
}
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)
{
printk(KERN_INFO "%s usb_set_interface failed, rc %d\n", __func__, rc);
return rc;
}
}
printk(KERN_INFO "smsusb_probe %d\n", intf->cur_altsetting->desc.bInterfaceNumber);
for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i ++)
printk(KERN_INFO "endpoint %d %02x %02x %d\n", 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)
{
printk(KERN_INFO "rom interface 0 is not used\n");
return -ENODEV;
}
if (intf->cur_altsetting->desc.bInterfaceNumber == 1)
{
snprintf(devpath, sizeof(devpath), "usb\\%d-%s", udev->bus->busnum, udev->devpath);
printk(KERN_INFO "stellar device was found.\n");
return smsusb1_load_firmware(udev, smscore_registry_getmode(devpath));
}
rc = smsusb_init_device(intf);
printk(KERN_INFO "%s rc %d\n", __func__, rc);
return rc;
}
void smsusb_disconnect(struct usb_interface *intf)
{
smsusb_term_device(intf);
}
static struct usb_device_id smsusb_id_table [] = {
{ USB_DEVICE(USB_VID_SIANO, 0x0010) },
{ USB_DEVICE(USB_VID_SIANO, USB_PID_STELLAR) },
{ USB_DEVICE(USB_VID_SIANO, USB_PID_NOVA_A) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, smsusb_id_table);
static struct usb_driver smsusb_driver = {
.name = "smsusb",
.probe = smsusb_probe,
.disconnect = smsusb_disconnect,
.id_table = smsusb_id_table,
};
int smsusb_register(void)
{
int rc = usb_register(&smsusb_driver);
if (rc)
printk(KERN_INFO "usb_register failed. Error number %d\n", rc);
printk(KERN_INFO "%s\n", __func__);
return rc;
}
void smsusb_unregister(void)
{
/* Regular USB Cleanup */
usb_deregister(&smsusb_driver);
printk(KERN_INFO "%s\n", __func__);
}