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path: root/drivers/media/dvb/b2c2/b2c2-usb-core.c
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Diffstat (limited to 'drivers/media/dvb/b2c2/b2c2-usb-core.c')
-rw-r--r--drivers/media/dvb/b2c2/b2c2-usb-core.c549
1 files changed, 549 insertions, 0 deletions
diff --git a/drivers/media/dvb/b2c2/b2c2-usb-core.c b/drivers/media/dvb/b2c2/b2c2-usb-core.c
new file mode 100644
index 00000000000..9306da046c9
--- /dev/null
+++ b/drivers/media/dvb/b2c2/b2c2-usb-core.c
@@ -0,0 +1,549 @@
+/*
+ * Copyright (C) 2004 Patrick Boettcher <patrick.boettcher@desy.de>,
+ * Luca Bertagnolio <>,
+ *
+ * based on information provided by John Jurrius from BBTI, Inc.
+ *
+ * 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, version 2.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/usb.h>
+#include <linux/moduleparam.h>
+#include <linux/pci.h>
+#include <linux/version.h>
+
+#include "dmxdev.h"
+#include "dvb_demux.h"
+#include "dvb_filter.h"
+#include "dvb_net.h"
+#include "dvb_frontend.h"
+
+/* debug */
+#define dprintk(level,args...) \
+ do { if ((debug & level)) { printk(args); } } while (0)
+#define debug_dump(b,l) if (debug) {\
+ int i; deb_xfer("%s: %d > ",__FUNCTION__,l); \
+ for (i = 0; i < l; i++) deb_xfer("%02x ", b[i]); \
+ deb_xfer("\n");\
+}
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level (1=info,ts=2,ctrl=4 (or-able)).");
+
+#define deb_info(args...) dprintk(0x01,args)
+#define deb_ts(args...) dprintk(0x02,args)
+#define deb_ctrl(args...) dprintk(0x04,args)
+
+/* Version information */
+#define DRIVER_VERSION "0.0"
+#define DRIVER_DESC "Driver for B2C2/Technisat Air/Cable/Sky-2-PC USB devices"
+#define DRIVER_AUTHOR "Patrick Boettcher, patrick.boettcher@desy.de"
+
+/* transfer parameters */
+#define B2C2_USB_FRAMES_PER_ISO 4
+#define B2C2_USB_NUM_ISO_URB 4 /* TODO check out a good value */
+
+#define B2C2_USB_CTRL_PIPE_IN usb_rcvctrlpipe(b2c2->udev,0)
+#define B2C2_USB_CTRL_PIPE_OUT usb_sndctrlpipe(b2c2->udev,0)
+#define B2C2_USB_DATA_PIPE usb_rcvisocpipe(b2c2->udev,0x81)
+
+struct usb_b2c2_usb {
+ struct usb_device *udev;
+ struct usb_interface *uintf;
+
+ u8 *iso_buffer;
+ int buffer_size;
+ dma_addr_t iso_dma_handle;
+ struct urb *iso_urb[B2C2_USB_NUM_ISO_URB];
+};
+
+
+/*
+ * USB
+ * 10 90 34 12 78 56 04 00
+ * usb_control_msg(udev, usb_sndctrlpipe(udev,0),
+ * 0x90,
+ * 0x10,
+ * 0x1234,
+ * 0x5678,
+ * buf,
+ * 4,
+ * 5*HZ);
+ *
+ * extern int usb_control_msg(struct usb_device *dev, unsigned int pipe,
+ * __u8 request,
+ * __u8 requesttype,
+ * __u16 value,
+ * __u16 index,
+ * void *data,
+ * __u16 size,
+ * int timeout);
+ *
+ */
+
+/* request types */
+typedef enum {
+
+/* something is wrong with this part
+ RTYPE_READ_DW = (1 << 6),
+ RTYPE_WRITE_DW_1 = (3 << 6),
+ RTYPE_READ_V8_MEMORY = (6 << 6),
+ RTYPE_WRITE_V8_MEMORY = (7 << 6),
+ RTYPE_WRITE_V8_FLASH = (8 << 6),
+ RTYPE_GENERIC = (9 << 6),
+*/
+ RTYPE_READ_DW = (3 << 6),
+ RTYPE_WRITE_DW_1 = (1 << 6),
+
+ RTYPE_READ_V8_MEMORY = (6 << 6),
+ RTYPE_WRITE_V8_MEMORY = (7 << 6),
+ RTYPE_WRITE_V8_FLASH = (8 << 6),
+ RTYPE_GENERIC = (9 << 6),
+} b2c2_usb_request_type_t;
+
+/* request */
+typedef enum {
+ B2C2_USB_WRITE_V8_MEM = 0x04,
+ B2C2_USB_READ_V8_MEM = 0x05,
+ B2C2_USB_READ_REG = 0x08,
+ B2C2_USB_WRITE_REG = 0x0A,
+/* B2C2_USB_WRITEREGLO = 0x0A, */
+ B2C2_USB_WRITEREGHI = 0x0B,
+ B2C2_USB_FLASH_BLOCK = 0x10,
+ B2C2_USB_I2C_REQUEST = 0x11,
+ B2C2_USB_UTILITY = 0x12,
+} b2c2_usb_request_t;
+
+/* function definition for I2C_REQUEST */
+typedef enum {
+ USB_FUNC_I2C_WRITE = 0x01,
+ USB_FUNC_I2C_MULTIWRITE = 0x02,
+ USB_FUNC_I2C_READ = 0x03,
+ USB_FUNC_I2C_REPEATWRITE = 0x04,
+ USB_FUNC_GET_DESCRIPTOR = 0x05,
+ USB_FUNC_I2C_REPEATREAD = 0x06,
+/* DKT 020208 - add this to support special case of DiSEqC */
+ USB_FUNC_I2C_CHECKWRITE = 0x07,
+ USB_FUNC_I2C_CHECKRESULT = 0x08,
+} b2c2_usb_i2c_function_t;
+
+/*
+ * function definition for UTILITY request 0x12
+ * DKT 020304 - new utility function
+ */
+typedef enum {
+ UTILITY_SET_FILTER = 0x01,
+ UTILITY_DATA_ENABLE = 0x02,
+ UTILITY_FLEX_MULTIWRITE = 0x03,
+ UTILITY_SET_BUFFER_SIZE = 0x04,
+ UTILITY_FLEX_OPERATOR = 0x05,
+ UTILITY_FLEX_RESET300_START = 0x06,
+ UTILITY_FLEX_RESET300_STOP = 0x07,
+ UTILITY_FLEX_RESET300 = 0x08,
+ UTILITY_SET_ISO_SIZE = 0x09,
+ UTILITY_DATA_RESET = 0x0A,
+ UTILITY_GET_DATA_STATUS = 0x10,
+ UTILITY_GET_V8_REG = 0x11,
+/* DKT 020326 - add function for v1.14 */
+ UTILITY_SRAM_WRITE = 0x12,
+ UTILITY_SRAM_READ = 0x13,
+ UTILITY_SRAM_TESTFILL = 0x14,
+ UTILITY_SRAM_TESTSET = 0x15,
+ UTILITY_SRAM_TESTVERIFY = 0x16,
+} b2c2_usb_utility_function_t;
+
+#define B2C2_WAIT_FOR_OPERATION_RW 1 // 1 s
+#define B2C2_WAIT_FOR_OPERATION_RDW 3 // 3 s
+#define B2C2_WAIT_FOR_OPERATION_WDW 1 // 1 s
+
+#define B2C2_WAIT_FOR_OPERATION_V8READ 3 // 3 s
+#define B2C2_WAIT_FOR_OPERATION_V8WRITE 3 // 3 s
+#define B2C2_WAIT_FOR_OPERATION_V8FLASH 3 // 3 s
+
+/* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits
+ * in the IBI address, to make the V8 code simpler.
+ * PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (these are the six bits used)
+ * in general: 0000 0HHH 000L LL00
+ * IBI ADDRESS FORMAT: RHHH BLLL
+ *
+ * where R is the read(1)/write(0) bit, B is the busy bit
+ * and HHH and LLL are the two sets of three bits from the PCI address.
+ */
+#define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
+#define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
+
+/*
+ * DKT 020228 - forget about this VENDOR_BUFFER_SIZE, read and write register
+ * deal with DWORD or 4 bytes, that should be should from now on
+ */
+static u32 b2c2_usb_read_dw(struct usb_b2c2_usb *b2c2, u16 wRegOffsPCI)
+{
+ u32 val;
+ u16 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) | 0x0080;
+ int len = usb_control_msg(b2c2->udev,
+ B2C2_USB_CTRL_PIPE_IN,
+ B2C2_USB_READ_REG,
+ RTYPE_READ_DW,
+ wAddress,
+ 0,
+ &val,
+ sizeof(u32),
+ B2C2_WAIT_FOR_OPERATION_RDW * 1000);
+
+ if (len != sizeof(u32)) {
+ err("error while reading dword from %d (%d).",wAddress,wRegOffsPCI);
+ return -EIO;
+ } else
+ return val;
+}
+
+/*
+ * DKT 020228 - from now on, we don't support anything older than firm 1.00
+ * I eliminated the write register as a 2 trip of writing hi word and lo word
+ * and force this to write only 4 bytes at a time.
+ * NOTE: this should work with all the firmware from 1.00 and newer
+ */
+static int b2c2_usb_write_dw(struct usb_b2c2_usb *b2c2, u16 wRegOffsPCI, u32 val)
+{
+ u16 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI);
+ int len = usb_control_msg(b2c2->udev,
+ B2C2_USB_CTRL_PIPE_OUT,
+ B2C2_USB_WRITE_REG,
+ RTYPE_WRITE_DW_1,
+ wAddress,
+ 0,
+ &val,
+ sizeof(u32),
+ B2C2_WAIT_FOR_OPERATION_RDW * 1000);
+
+ if (len != sizeof(u32)) {
+ err("error while reading dword from %d (%d).",wAddress,wRegOffsPCI);
+ return -EIO;
+ } else
+ return 0;
+}
+
+/*
+ * DKT 010817 - add support for V8 memory read/write and flash update
+ */
+static int b2c2_usb_v8_memory_req(struct usb_b2c2_usb *b2c2,
+ b2c2_usb_request_t req, u8 page, u16 wAddress,
+ u16 buflen, u8 *pbBuffer)
+{
+ u8 dwRequestType;
+ u16 wIndex;
+ int nWaitTime,pipe,len;
+
+ wIndex = page << 8;
+
+ switch (req) {
+ case B2C2_USB_READ_V8_MEM:
+ nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
+ dwRequestType = (u8) RTYPE_READ_V8_MEMORY;
+ pipe = B2C2_USB_CTRL_PIPE_IN;
+ break;
+ case B2C2_USB_WRITE_V8_MEM:
+ wIndex |= pbBuffer[0];
+ nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
+ dwRequestType = (u8) RTYPE_WRITE_V8_MEMORY;
+ pipe = B2C2_USB_CTRL_PIPE_OUT;
+ break;
+ case B2C2_USB_FLASH_BLOCK:
+ nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
+ dwRequestType = (u8) RTYPE_WRITE_V8_FLASH;
+ pipe = B2C2_USB_CTRL_PIPE_OUT;
+ break;
+ default:
+ deb_info("unsupported request for v8_mem_req %x.\n",req);
+ return -EINVAL;
+ }
+ len = usb_control_msg(b2c2->udev,pipe,
+ req,
+ dwRequestType,
+ wAddress,
+ wIndex,
+ pbBuffer,
+ buflen,
+ nWaitTime * 1000);
+ return len == buflen ? 0 : -EIO;
+}
+
+static int b2c2_usb_i2c_req(struct usb_b2c2_usb *b2c2,
+ b2c2_usb_request_t req, b2c2_usb_i2c_function_t func,
+ u8 port, u8 chipaddr, u8 addr, u8 buflen, u8 *buf)
+{
+ u16 wValue, wIndex;
+ int nWaitTime,pipe,len;
+ u8 dwRequestType;
+
+ switch (func) {
+ case USB_FUNC_I2C_WRITE:
+ case USB_FUNC_I2C_MULTIWRITE:
+ case USB_FUNC_I2C_REPEATWRITE:
+ /* DKT 020208 - add this to support special case of DiSEqC */
+ case USB_FUNC_I2C_CHECKWRITE:
+ pipe = B2C2_USB_CTRL_PIPE_OUT;
+ nWaitTime = 2;
+ dwRequestType = (u8) RTYPE_GENERIC;
+ break;
+ case USB_FUNC_I2C_READ:
+ case USB_FUNC_I2C_REPEATREAD:
+ pipe = B2C2_USB_CTRL_PIPE_IN;
+ nWaitTime = 2;
+ dwRequestType = (u8) RTYPE_GENERIC;
+ break;
+ default:
+ deb_info("unsupported function for i2c_req %x\n",func);
+ return -EINVAL;
+ }
+ wValue = (func << 8 ) | port;
+ wIndex = (chipaddr << 8 ) | addr;
+
+ len = usb_control_msg(b2c2->udev,pipe,
+ req,
+ dwRequestType,
+ addr,
+ wIndex,
+ buf,
+ buflen,
+ nWaitTime * 1000);
+ return len == buflen ? 0 : -EIO;
+}
+
+int static b2c2_usb_utility_req(struct usb_b2c2_usb *b2c2, int set,
+ b2c2_usb_utility_function_t func, u8 extra, u16 wIndex,
+ u16 buflen, u8 *pvBuffer)
+{
+ u16 wValue;
+ int nWaitTime = 2,
+ pipe = set ? B2C2_USB_CTRL_PIPE_OUT : B2C2_USB_CTRL_PIPE_IN,
+ len;
+
+ wValue = (func << 8) | extra;
+
+ len = usb_control_msg(b2c2->udev,pipe,
+ B2C2_USB_UTILITY,
+ (u8) RTYPE_GENERIC,
+ wValue,
+ wIndex,
+ pvBuffer,
+ buflen,
+ nWaitTime * 1000);
+ return len == buflen ? 0 : -EIO;
+}
+
+
+
+static void b2c2_dumpfourreg(struct usb_b2c2_usb *b2c2, u16 offs)
+{
+ u32 r0,r1,r2,r3;
+ r0 = r1 = r2 = r3 = 0;
+ r0 = b2c2_usb_read_dw(b2c2,offs);
+ r1 = b2c2_usb_read_dw(b2c2,offs + 0x04);
+ r2 = b2c2_usb_read_dw(b2c2,offs + 0x08);
+ r3 = b2c2_usb_read_dw(b2c2,offs + 0x0c);
+ deb_ctrl("dump: offset: %03x, %08x, %08x, %08x, %08x\n",offs,r0,r1,r2,r3);
+}
+
+static void b2c2_urb_complete(struct urb *urb, struct pt_regs *ptregs)
+{
+ struct usb_b2c2_usb *b2c2 = urb->context;
+ deb_ts("urb completed, bufsize: %d\n",urb->transfer_buffer_length);
+
+// urb_submit_urb(urb,GFP_ATOMIC); enable for real action
+}
+
+static void b2c2_exit_usb(struct usb_b2c2_usb *b2c2)
+{
+ int i;
+ for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
+ if (b2c2->iso_urb[i] != NULL) { /* not sure about unlink_urb and iso-urbs TODO */
+ deb_info("unlinking/killing urb no. %d\n",i);
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,7)
+ usb_unlink_urb(b2c2->iso_urb[i]);
+#else
+ usb_kill_urb(b2c2->iso_urb[i]);
+#endif
+ usb_free_urb(b2c2->iso_urb[i]);
+ }
+
+ if (b2c2->iso_buffer != NULL)
+ pci_free_consistent(NULL,b2c2->buffer_size, b2c2->iso_buffer, b2c2->iso_dma_handle);
+
+}
+
+static int b2c2_init_usb(struct usb_b2c2_usb *b2c2)
+{
+ u16 frame_size = le16_to_cpu(b2c2->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
+ int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO * frame_size,i,j,ret;
+ int buffer_offset = 0;
+
+ deb_info("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
+ B2C2_USB_NUM_ISO_URB, B2C2_USB_FRAMES_PER_ISO, frame_size,bufsize);
+
+ b2c2->iso_buffer = pci_alloc_consistent(NULL,bufsize,&b2c2->iso_dma_handle);
+ if (b2c2->iso_buffer == NULL)
+ return -ENOMEM;
+ memset(b2c2->iso_buffer, 0, bufsize);
+ b2c2->buffer_size = bufsize;
+
+ /* creating iso urbs */
+ for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
+ if (!(b2c2->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,GFP_ATOMIC))) {
+ ret = -ENOMEM;
+ goto urb_error;
+ }
+ /* initialising and submitting iso urbs */
+ for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
+ int frame_offset = 0;
+ struct urb *urb = b2c2->iso_urb[i];
+ deb_info("initializing and submitting urb no. %d (buf_offset: %d).\n",i,buffer_offset);
+
+ urb->dev = b2c2->udev;
+ urb->context = b2c2;
+ urb->complete = b2c2_urb_complete;
+ urb->pipe = B2C2_USB_DATA_PIPE;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->interval = 1;
+ urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
+ urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
+ urb->transfer_buffer = b2c2->iso_buffer + buffer_offset;
+
+ buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
+ for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
+ deb_info("urb no: %d, frame: %d, frame_offset: %d\n",i,j,frame_offset);
+ urb->iso_frame_desc[j].offset = frame_offset;
+ urb->iso_frame_desc[j].length = frame_size;
+ frame_offset += frame_size;
+ }
+
+ if ((ret = usb_submit_urb(b2c2->iso_urb[i],GFP_ATOMIC))) {
+ err("submitting urb %d failed with %d.",i,ret);
+ goto urb_error;
+ }
+ deb_info("submitted urb no. %d.\n",i);
+ }
+
+ ret = 0;
+ goto success;
+urb_error:
+ b2c2_exit_usb(b2c2);
+success:
+ return ret;
+}
+
+static int b2c2_usb_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct usb_b2c2_usb *b2c2 = NULL;
+ int ret;
+
+ b2c2 = kmalloc(sizeof(struct usb_b2c2_usb),GFP_KERNEL);
+ if (b2c2 == NULL) {
+ err("no memory");
+ return -ENOMEM;
+ }
+ b2c2->udev = udev;
+ b2c2->uintf = intf;
+
+ /* use the alternate setting with the larges buffer */
+ usb_set_interface(udev,0,1);
+
+ if ((ret = b2c2_init_usb(b2c2)))
+ goto usb_init_error;
+
+ usb_set_intfdata(intf,b2c2);
+
+ switch (udev->speed) {
+ case USB_SPEED_LOW:
+ err("cannot handle USB speed because it is to sLOW.");
+ break;
+ case USB_SPEED_FULL:
+ info("running at FULL speed.");
+ break;
+ case USB_SPEED_HIGH:
+ info("running at HIGH speed.");
+ break;
+ case USB_SPEED_UNKNOWN: /* fall through */
+ default:
+ err("cannot handle USB speed because it is unkown.");
+ break;
+ }
+
+ b2c2_dumpfourreg(b2c2,0x200);
+ b2c2_dumpfourreg(b2c2,0x300);
+ b2c2_dumpfourreg(b2c2,0x400);
+ b2c2_dumpfourreg(b2c2,0x700);
+
+
+ if (ret == 0)
+ info("%s successfully initialized and connected.",DRIVER_DESC);
+ else
+ info("%s error while loading driver (%d)",DRIVER_DESC,ret);
+
+ ret = 0;
+ goto success;
+
+usb_init_error:
+ kfree(b2c2);
+success:
+ return ret;
+}
+
+static void b2c2_usb_disconnect(struct usb_interface *intf)
+{
+ struct usb_b2c2_usb *b2c2 = usb_get_intfdata(intf);
+ usb_set_intfdata(intf,NULL);
+ if (b2c2 != NULL) {
+ b2c2_exit_usb(b2c2);
+ kfree(b2c2);
+ }
+ info("%s successfully deinitialized and disconnected.",DRIVER_DESC);
+
+}
+
+static struct usb_device_id b2c2_usb_table [] = {
+ { USB_DEVICE(0x0af7, 0x0101) }
+};
+
+/* usb specific object needed to register this driver with the usb subsystem */
+static struct usb_driver b2c2_usb_driver = {
+ .owner = THIS_MODULE,
+ .name = "dvb_b2c2_usb",
+ .probe = b2c2_usb_probe,
+ .disconnect = b2c2_usb_disconnect,
+ .id_table = b2c2_usb_table,
+};
+
+/* module stuff */
+static int __init b2c2_usb_init(void)
+{
+ int result;
+ if ((result = usb_register(&b2c2_usb_driver))) {
+ err("usb_register failed. Error number %d",result);
+ return result;
+ }
+
+ return 0;
+}
+
+static void __exit b2c2_usb_exit(void)
+{
+ /* deregister this driver from the USB subsystem */
+ usb_deregister(&b2c2_usb_driver);
+}
+
+module_init (b2c2_usb_init);
+module_exit (b2c2_usb_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(usb, b2c2_usb_table);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 22:32:25 +0000