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path: root/drivers/usb/misc/emi26.c
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Diffstat (limited to 'drivers/usb/misc/emi26.c')
-rw-r--r--drivers/usb/misc/emi26.c183
1 files changed, 92 insertions, 91 deletions
diff --git a/drivers/usb/misc/emi26.c b/drivers/usb/misc/emi26.c
index 4a09b87bdd2..8950fa5e973 100644
--- a/drivers/usb/misc/emi26.c
+++ b/drivers/usb/misc/emi26.c
@@ -13,21 +13,10 @@
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/module.h>
-#include <linux/init.h>
#include <linux/usb.h>
#include <linux/delay.h>
-
-#define MAX_INTEL_HEX_RECORD_LENGTH 16
-typedef struct _INTEL_HEX_RECORD
-{
- __u32 length;
- __u32 address;
- __u32 type;
- __u8 data[MAX_INTEL_HEX_RECORD_LENGTH];
-} INTEL_HEX_RECORD, *PINTEL_HEX_RECORD;
-
-/* include firmware (variables) */
-#include "emi26_fw.h"
+#include <linux/firmware.h>
+#include <linux/ihex.h>
#define EMI26_VENDOR_ID 0x086a /* Emagic Soft-und Hardware GmBH */
#define EMI26_PRODUCT_ID 0x0100 /* EMI 2|6 without firmware */
@@ -40,23 +29,24 @@ typedef struct _INTEL_HEX_RECORD
#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, unsigned char *data, int length, __u8 bRequest);
+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);
-static int __init emi26_init (void);
-static void __exit emi26_exit (void);
-
/* thanks to drivers/usb/serial/keyspan_pda.c code */
-static int emi26_writememory (struct usb_device *dev, int address, unsigned char *data, int length, __u8 request)
+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) {
- err("emi26: kmalloc(%d) failed.", length);
+ dev_err(&dev->dev, "kmalloc(%d) failed.\n", length);
return -ENOMEM;
}
/* Note: usb_control_msg returns negative value on error or length of the
@@ -70,11 +60,11 @@ static int emi26_writememory (struct usb_device *dev, int address, unsigned char
static int emi26_set_reset (struct usb_device *dev, unsigned char reset_bit)
{
int response;
- info("%s - %d", __FUNCTION__, reset_bit);
- /* printk(KERN_DEBUG "%s - %d", __FUNCTION__, reset_bit); */
+ 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) {
- err("emi26: set_reset (%d) failed", reset_bit);
+ dev_err(&dev->dev, "set_reset (%d) failed\n", reset_bit);
}
return response;
}
@@ -83,121 +73,132 @@ static int emi26_set_reset (struct usb_device *dev, unsigned char reset_bit)
static int emi26_load_firmware (struct usb_device *dev)
{
- int err;
+ 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;
- int pos = 0; /* Position in hex record */
__u32 addr; /* Address to write */
__u8 *buf;
buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL);
- if (!buf) {
- err( "%s - error loading firmware: error = %d", __FUNCTION__, -ENOMEM);
- err = -ENOMEM;
+ 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) {
- err( "%s - error loading firmware: error = %d", __FUNCTION__, err);
+ 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 */
- for (i=0; g_Loader[i].type == 0; i++) {
- err = emi26_writememory(dev, g_Loader[i].address, g_Loader[i].data, g_Loader[i].length, ANCHOR_LOAD_INTERNAL);
- if (err < 0) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ 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) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ 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 = g_bitstream[pos].address;
+ addr = be32_to_cpu(rec->addr);
/* intel hex records are terminated with type 0 element */
- while ((g_bitstream[pos].type == 0) && (i + g_bitstream[pos].length < FW_LOAD_SIZE)) {
- memcpy(buf + i, g_bitstream[pos].data, g_bitstream[pos].length);
- i += g_bitstream[pos].length;
- pos++;
+ 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) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ if (err < 0)
goto wraperr;
- }
- } while (i > 0);
+ } while (rec);
/* Assert reset (stop the CPU in the EMI) */
err = emi26_set_reset(dev,1);
- if (err < 0) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ if (err < 0)
goto wraperr;
- }
/* 3. We need to put the loader for the firmware into the EZ-USB (again...) */
- for (i=0; g_Loader[i].type == 0; i++) {
- err = emi26_writememory(dev, g_Loader[i].address, g_Loader[i].data, g_Loader[i].length, ANCHOR_LOAD_INTERNAL);
- if (err < 0) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ 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) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ if (err < 0)
goto wraperr;
- }
/* 4. We put the part of the firmware that lies in the external RAM into the EZ-USB */
- for (i=0; g_Firmware[i].type == 0; i++) {
- if (!INTERNAL_RAM(g_Firmware[i].address)) {
- err = emi26_writememory(dev, g_Firmware[i].address, g_Firmware[i].data, g_Firmware[i].length, ANCHOR_LOAD_EXTERNAL);
- if (err < 0) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+
+ 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) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ if (err < 0)
goto wraperr;
- }
- for (i=0; g_Firmware[i].type == 0; i++) {
- if (INTERNAL_RAM(g_Firmware[i].address)) {
- err = emi26_writememory(dev, g_Firmware[i].address, g_Firmware[i].data, g_Firmware[i].length, ANCHOR_LOAD_INTERNAL);
- if (err < 0) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ 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) {
- err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+ if (err < 0)
goto wraperr;
- }
msleep(250); /* let device settle */
/* return 1 to fail the driver inialization
@@ -205,11 +206,19 @@ static int emi26_load_firmware (struct usb_device *dev)
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 struct usb_device_id id_table [] = {
+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 */
@@ -221,7 +230,7 @@ static int emi26_probe(struct usb_interface *intf, const struct usb_device_id *i
{
struct usb_device *dev = interface_to_usbdev(intf);
- info("%s start", __FUNCTION__);
+ dev_info(&intf->dev, "%s start\n", __func__);
emi26_load_firmware(dev);
@@ -240,22 +249,14 @@ static struct usb_driver emi26_driver = {
.id_table = id_table,
};
-static int __init emi26_init (void)
-{
- return usb_register(&emi26_driver);
-}
-
-static void __exit emi26_exit (void)
-{
- usb_deregister (&emi26_driver);
-}
-
-module_init(emi26_init);
-module_exit(emi26_exit);
+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
*/
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 01:58:50 +0000