/* * Emagic EMI 2|6 usb audio interface firmware loader. * Copyright (C) 2002 * Tapio Laxström (tapio.laxstrom@iptime.fi) * * 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. * * emi26.c,v 1.13 2002/03/08 13:10:26 tapio Exp */ #include #include #include #include #include #include #include #include #define EMI26_VENDOR_ID 0x086a /* Emagic Soft-und Hardware GmBH */ #define EMI26_PRODUCT_ID 0x0100 /* EMI 2|6 without firmware */ #define EMI26B_PRODUCT_ID 0x0102 /* EMI 2|6 without firmware */ #define ANCHOR_LOAD_INTERNAL 0xA0 /* Vendor specific request code for Anchor Upload/Download (This one is implemented in the core) */ #define ANCHOR_LOAD_EXTERNAL 0xA3 /* This command is not implemented in the core. Requires firmware */ #define ANCHOR_LOAD_FPGA 0xA5 /* This command is not implemented in the core. Requires firmware. Emagic extension */ #define MAX_INTERNAL_ADDRESS 0x1B3F /* This is the highest internal RAM address for the AN2131Q */ #define CPUCS_REG 0x7F92 /* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */ #define INTERNAL_RAM(address) (address <= MAX_INTERNAL_ADDRESS) static int emi26_writememory( struct usb_device *dev, int address, const unsigned char *data, int length, __u8 bRequest); static int emi26_set_reset(struct usb_device *dev, unsigned char reset_bit); static int emi26_load_firmware (struct usb_device *dev); static int emi26_probe(struct usb_interface *intf, const struct usb_device_id *id); static void emi26_disconnect(struct usb_interface *intf); /* thanks to drivers/usb/serial/keyspan_pda.c code */ static int emi26_writememory (struct usb_device *dev, int address, const unsigned char *data, int length, __u8 request) { int result; unsigned char *buffer = kmemdup(data, length, GFP_KERNEL); if (!buffer) { dev_err(&dev->dev, "kmalloc(%d) failed.\n", length); return -ENOMEM; } /* Note: usb_control_msg returns negative value on error or length of the * data that was written! */ result = usb_control_msg (dev, usb_sndctrlpipe(dev, 0), request, 0x40, address, 0, buffer, length, 300); kfree (buffer); return result; } /* thanks to drivers/usb/serial/keyspan_pda.c code */ static int emi26_set_reset (struct usb_device *dev, unsigned char reset_bit) { int response; dev_info(&dev->dev, "%s - %d\n", __func__, reset_bit); /* printk(KERN_DEBUG "%s - %d", __func__, reset_bit); */ response = emi26_writememory (dev, CPUCS_REG, &reset_bit, 1, 0xa0); if (response < 0) { dev_err(&dev->dev, "set_reset (%d) failed\n", reset_bit); } return response; } #define FW_LOAD_SIZE 1023 static int emi26_load_firmware (struct usb_device *dev) { const struct firmware *loader_fw = NULL; const struct firmware *bitstream_fw = NULL; const struct firmware *firmware_fw = NULL; const struct ihex_binrec *rec; int err = -ENOMEM; int i; __u32 addr; /* Address to write */ __u8 *buf; buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL); if (!buf) goto wraperr; err = request_ihex_firmware(&loader_fw, "emi26/loader.fw", &dev->dev); if (err) goto nofw; err = request_ihex_firmware(&bitstream_fw, "emi26/bitstream.fw", &dev->dev); if (err) goto nofw; err = request_ihex_firmware(&firmware_fw, "emi26/firmware.fw", &dev->dev); if (err) { nofw: dev_err(&dev->dev, "%s - request_firmware() failed\n", __func__); goto wraperr; } /* Assert reset (stop the CPU in the EMI) */ err = emi26_set_reset(dev,1); if (err < 0) goto wraperr; rec = (const struct ihex_binrec *)loader_fw->data; /* 1. We need to put the loader for the FPGA into the EZ-USB */ while (rec) { err = emi26_writememory(dev, be32_to_cpu(rec->addr), rec->data, be16_to_cpu(rec->len), ANCHOR_LOAD_INTERNAL); if (err < 0) goto wraperr; rec = ihex_next_binrec(rec); } /* De-assert reset (let the CPU run) */ err = emi26_set_reset(dev,0); if (err < 0) goto wraperr; msleep(250); /* let device settle */ /* 2. We upload the FPGA firmware into the EMI * Note: collect up to 1023 (yes!) bytes and send them with * a single request. This is _much_ faster! */ rec = (const struct ihex_binrec *)bitstream_fw->data; do { i = 0; addr = be32_to_cpu(rec->addr); /* intel hex records are terminated with type 0 element */ while (rec && (i + be16_to_cpu(rec->len) < FW_LOAD_SIZE)) { memcpy(buf + i, rec->data, be16_to_cpu(rec->len)); i += be16_to_cpu(rec->len); rec = ihex_next_binrec(rec); } err = emi26_writememory(dev, addr, buf, i, ANCHOR_LOAD_FPGA); if (err < 0) goto wraperr; } while (rec); /* Assert reset (stop the CPU in the EMI) */ err = emi26_set_reset(dev,1); if (err < 0) goto wraperr; /* 3. We need to put the loader for the firmware into the EZ-USB (again...) */ for (rec = (const struct ihex_binrec *)loader_fw->data; rec; rec = ihex_next_binrec(rec)) { err = emi26_writememory(dev, be32_to_cpu(rec->addr), rec->data, be16_to_cpu(rec->len), ANCHOR_LOAD_INTERNAL); if (err < 0) goto wraperr; } msleep(250); /* let device settle */ /* De-assert reset (let the CPU run) */ err = emi26_set_reset(dev,0); if (err < 0) goto wraperr; /* 4. We put the part of the firmware that lies in the external RAM into the EZ-USB */ for (rec = (const struct ihex_binrec *)firmware_fw->data; rec; rec = ihex_next_binrec(rec)) { if (!INTERNAL_RAM(be32_to_cpu(rec->addr))) { err = emi26_writememory(dev, be32_to_cpu(rec->addr), rec->data, be16_to_cpu(rec->len), ANCHOR_LOAD_EXTERNAL); if (err < 0) goto wraperr; } } /* Assert reset (stop the CPU in the EMI) */ err = emi26_set_reset(dev,1); if (err < 0) goto wraperr; for (rec = (const struct ihex_binrec *)firmware_fw->data; rec; rec = ihex_next_binrec(rec)) { if (INTERNAL_RAM(be32_to_cpu(rec->addr))) { err = emi26_writememory(dev, be32_to_cpu(rec->addr), rec->data, be16_to_cpu(rec->len), ANCHOR_LOAD_INTERNAL); if (err < 0) goto wraperr; } } /* De-assert reset (let the CPU run) */ err = emi26_set_reset(dev,0); if (err < 0) goto wraperr; msleep(250); /* let device settle */ /* return 1 to fail the driver inialization * and give real driver change to load */ err = 1; wraperr: if (err < 0) dev_err(&dev->dev,"%s - error loading firmware: error = %d\n", __func__, err); release_firmware(loader_fw); release_firmware(bitstream_fw); release_firmware(firmware_fw); kfree(buf); return err; } static const struct usb_device_id id_table[] = { { USB_DEVICE(EMI26_VENDOR_ID, EMI26_PRODUCT_ID) }, { USB_DEVICE(EMI26_VENDOR_ID, EMI26B_PRODUCT_ID) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE (usb, id_table); static int emi26_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *dev = interface_to_usbdev(intf); dev_info(&intf->dev, "%s start\n", __func__); emi26_load_firmware(dev); /* do not return the driver context, let real audio driver do that */ return -EIO; } static void emi26_disconnect(struct usb_interface *intf) { } static struct usb_driver emi26_driver = { .name = "emi26 - firmware loader", .probe = emi26_probe, .disconnect = emi26_disconnect, .id_table = id_table, }; module_usb_driver(emi26_driver); MODULE_AUTHOR("Tapio Laxström"); MODULE_DESCRIPTION("Emagic EMI 2|6 firmware loader."); MODULE_LICENSE("GPL"); MODULE_FIRMWARE("emi26/loader.fw"); MODULE_FIRMWARE("emi26/bitstream.fw"); MODULE_FIRMWARE("emi26/firmware.fw"); /* vi:ai:syntax=c:sw=8:ts=8:tw=80 */ pointers into that skb. Fix from Eric Dumazet. 12) Fix various bugs in legacy IRQ fallback handling in alx driver, from Tobias Regnery. 13) Do not allow lwtunnel drivers to be unloaded while they are referenced by active instances, from Robert Shearman. 14) Fix truncated PHY LED trigger names, from Geert Uytterhoeven. 15) Fix a few regressions from virtio_net XDP support, from John Fastabend and Jakub Kicinski. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (102 commits) ISDN: eicon: silence misleading array-bounds warning net: phy: micrel: add support for KSZ8795 gtp: fix cross netns recv on gtp socket gtp: clear DF bit on GTP packet tx gtp: add genl family modules alias tcp: don't annotate mark on control socket from tcp_v6_send_response() ravb: unmap descriptors when freeing rings virtio_net: reject XDP programs using header adjustment virtio_net: use dev_kfree_skb for small buffer XDP receive r8152: check rx after napi is enabled r8152: re-schedule napi for tx r8152: avoid start_xmit to schedule napi when napi is disabled r8152: avoid start_xmit to call napi_schedule during autosuspend net: dsa: Bring back device detaching in dsa_slave_suspend() net: phy: leds: Fix truncated LED trigger names net: phy: leds: Break dependency of phy.h on phy_led_triggers.h net: phy: leds: Clear phy_num_led_triggers on failure to avoid crash net-next: ethernet: mediatek: change the compatible string Documentation: devicetree: change the mediatek ethernet compatible string bnxt_en: Fix RTNL lock usage on bnxt_get_port_module_status(). ...
Diffstat (limited to 'sound/soc/mxs')