[media] dvb-usb: move it to drivers/media/usb/dvb-usb

As media/dvb will be removed, move it to a proper place.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 146 insertions, 0 deletions

diff --git a/drivers/media/usb/dvb-usb/dvb-usb-firmware.c b/drivers/media/usb/dvb-usb/dvb-usb-firmware.c
new file mode 100644
index 000000000000..733a7ff7b207
--- /dev/null
+++ b/drivers/media/usb/dvb-usb/dvb-usb-firmware.c
@@ -0,0 +1,146 @@
+/* dvb-usb-firmware.c is part of the DVB USB library.
+ *
+ * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
+ * see dvb-usb-init.c for copyright information.
+ *
+ * This file contains functions for downloading the firmware to Cypress FX 1 and 2 based devices.
+ *
+ * FIXME: This part does actually not belong to dvb-usb, but to the usb-subsystem.
+ */
+#include "dvb-usb-common.h"
+
+#include <linux/usb.h>
+
+struct usb_cypress_controller {
+        int id;
+        const char *name;       /* name of the usb controller */
+        u16 cpu_cs_register;    /* needs to be restarted, when the firmware has been downloaded. */
+};
+
+static struct usb_cypress_controller cypress[] = {
+        { .id = DEVICE_SPECIFIC, .name = "Device specific", .cpu_cs_register = 0 },
+        { .id = CYPRESS_AN2135,  .name = "Cypress AN2135",  .cpu_cs_register = 0x7f92 },
+        { .id = CYPRESS_AN2235,  .name = "Cypress AN2235",  .cpu_cs_register = 0x7f92 },
+        { .id = CYPRESS_FX2,     .name = "Cypress FX2",     .cpu_cs_register = 0xe600 },
+};
+
+/*
+ * load a firmware packet to the device
+ */
+static int usb_cypress_writemem(struct usb_device *udev,u16 addr,u8 *data, u8 len)
+{
+        return usb_control_msg(udev, usb_sndctrlpipe(udev,0),
+                        0xa0, USB_TYPE_VENDOR, addr, 0x00, data, len, 5000);
+}
+
+int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type)
+{
+        struct hexline hx;
+        u8 reset;
+        int ret,pos=0;
+
+        /* stop the CPU */
+        reset = 1;
+        if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1)) != 1)
+                err("could not stop the USB controller CPU.");
+
+        while ((ret = dvb_usb_get_hexline(fw,&hx,&pos)) > 0) {
+                deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx.addr,hx.len,hx.chk);
+                ret = usb_cypress_writemem(udev,hx.addr,hx.data,hx.len);
+
+                if (ret != hx.len) {
+                        err("error while transferring firmware "
+                                "(transferred size: %d, block size: %d)",
+                                ret,hx.len);
+                        ret = -EINVAL;
+                        break;
+                }
+        }
+        if (ret < 0) {
+                err("firmware download failed at %d with %d",pos,ret);
+                return ret;
+        }
+
+        if (ret == 0) {
+                /* restart the CPU */
+                reset = 0;
+                if (ret || usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1) != 1) {
+                        err("could not restart the USB controller CPU.");
+                        ret = -EINVAL;
+                }
+        } else
+                ret = -EIO;
+
+        return ret;
+}
+EXPORT_SYMBOL(usb_cypress_load_firmware);
+
+int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_device_properties *props)
+{
+        int ret;
+        const struct firmware *fw = NULL;
+
+        if ((ret = request_firmware(&fw, props->firmware, &udev->dev)) != 0) {
+                err("did not find the firmware file. (%s) "
+                        "Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
+                        props->firmware,ret);
+                return ret;
+        }
+
+        info("downloading firmware from file '%s'",props->firmware);
+
+        switch (props->usb_ctrl) {
+                case CYPRESS_AN2135:
+                case CYPRESS_AN2235:
+                case CYPRESS_FX2:
+                        ret = usb_cypress_load_firmware(udev, fw, props->usb_ctrl);
+                        break;
+                case DEVICE_SPECIFIC:
+                        if (props->download_firmware)
+                                ret = props->download_firmware(udev,fw);
+                        else {
+                                err("BUG: driver didn't specified a download_firmware-callback, although it claims to have a DEVICE_SPECIFIC one.");
+                                ret = -EINVAL;
+                        }
+                        break;
+                default:
+                        ret = -EINVAL;
+                        break;
+        }
+
+        release_firmware(fw);
+        return ret;
+}
+
+int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx,
+                               int *pos)
+{
+        u8 *b = (u8 *) &fw->data[*pos];
+        int data_offs = 4;
+        if (*pos >= fw->size)
+                return 0;
+
+        memset(hx,0,sizeof(struct hexline));
+
+        hx->len  = b[0];
+
+        if ((*pos + hx->len + 4) >= fw->size)
+                return -EINVAL;
+
+        hx->addr = b[1] | (b[2] << 8);
+        hx->type = b[3];
+
+        if (hx->type == 0x04) {
+                /* b[4] and b[5] are the Extended linear address record data field */
+                hx->addr |= (b[4] << 24) | (b[5] << 16);
+/*              hx->len -= 2;
+                data_offs += 2; */
+        }
+        memcpy(hx->data,&b[data_offs],hx->len);
+        hx->chk = b[hx->len + data_offs];
+
+        *pos += hx->len + 5;
+
+        return *pos;
+}
+EXPORT_SYMBOL(dvb_usb_get_hexline);