emi26: use request_firmware()

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 66 insertions, 30 deletions

diff --git a/drivers/usb/misc/emi26.c b/drivers/usb/misc/emi26.c
index 4b9dc81b8453..4b994a0cd272 100644
--- a/drivers/usb/misc/emi26.c
+++ b/drivers/usb/misc/emi26.c
@@ -16,18 +16,8 @@
 #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 */
@@ -40,7 +30,9 @@ 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);
@@ -50,7 +42,9 @@ 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);
@@ -83,9 +77,12 @@ static int emi26_set_reset (struct usb_device *dev, unsigned char reset_bit)
 
 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;
         int i;
-        int pos = 0;    /* Position in hex record */
         __u32 addr;     /* Address to write */
         __u8 *buf;
 
@@ -96,6 +93,23 @@ static int emi26_load_firmware (struct usb_device *dev)
                 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:
+                err( "%s - request_firmware() failed", __func__);
+                goto wraperr;
+        }
+
         /* Assert reset (stop the CPU in the EMI) */
         err = emi26_set_reset(dev,1);
         if (err < 0) {
@@ -103,13 +117,17 @@ static int emi26_load_firmware (struct usb_device *dev)
                 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);
+        while (rec) {
+                err = emi26_writememory(dev, be32_to_cpu(rec->addr),
+                                        rec->data, be16_to_cpu(rec->len),
+                                        ANCHOR_LOAD_INTERNAL);
                 if (err < 0) {
                         err("%s - error loading firmware: error = %d", __func__, err);
                         goto wraperr;
                 }
+                rec = ihex_next_binrec(rec);
         }
 
         /* De-assert reset (let the CPU run) */
@@ -123,15 +141,16 @@ static int emi26_load_firmware (struct usb_device *dev)
         /* 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) {
@@ -148,8 +167,11 @@ static int emi26_load_firmware (struct usb_device *dev)
         }
 
         /* 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);
+        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) {
                         err("%s - error loading firmware: error = %d", __func__, err);
                         goto wraperr;
@@ -165,9 +187,13 @@ static int emi26_load_firmware (struct usb_device *dev)
         }
 
         /* 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);
+
+        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) {
                                 err("%s - error loading firmware: error = %d", __func__, err);
                                 goto wraperr;
@@ -182,9 +208,12 @@ static int emi26_load_firmware (struct usb_device *dev)
                 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);
+        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) {
                                 err("%s - error loading firmware: error = %d", __func__, err);
                                 goto wraperr;
@@ -205,6 +234,10 @@ static int emi26_load_firmware (struct usb_device *dev)
         err = 1;
 
 wraperr:
+        release_firmware(loader_fw);
+        release_firmware(bitstream_fw);
+        release_firmware(firmware_fw);
+
         kfree(buf);
         return err;
 }
@@ -257,5 +290,8 @@ 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
  */