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yam: use request_firmware

Added predef variable in add_mcs() to support predefined mcs data

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
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1 parent 7c757eb commit a7a5eb9d4eb9908709df66e8f8f1724b5b108258 Jaswinder Singh Rajput committed Mar 30, 2009
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@@ -55,6 +55,8 @@
#include <asm/system.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
+#include <linux/firmware.h>
+#include <linux/platform_device.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
@@ -71,8 +73,6 @@
#include <linux/init.h>
#include <linux/yam.h>
-#include "yam9600.h"
-#include "yam1200.h"
/* --------------------------------------------------------------------- */
@@ -82,6 +82,9 @@ static const char yam_drvinfo[] __initdata = KERN_INFO \
/* --------------------------------------------------------------------- */
+#define FIRMWARE_9600 "yam/9600.bin"
+#define FIRMWARE_1200 "yam/1200.bin"
+
#define YAM_9600 1
#define YAM_1200 2
@@ -342,9 +345,51 @@ static int fpga_write(int iobase, unsigned char wrd)
return 0;
}
-static unsigned char *add_mcs(unsigned char *bits, int bitrate)
+/*
+ * predef should be 0 for loading user defined mcs
+ * predef should be YAM_1200 for loading predef 1200 mcs
+ * predef should be YAM_9600 for loading predef 9600 mcs
+ */
+static unsigned char *add_mcs(unsigned char *bits, int bitrate,
+ unsigned int predef)
{
+ const char *fw_name[2] = {FIRMWARE_9600, FIRMWARE_1200};
+ const struct firmware *fw;
+ struct platform_device *pdev;
struct yam_mcs *p;
+ int err;
+
+ switch (predef) {
+ case 0:
+ fw = NULL;
+ break;
+ case YAM_1200:
+ case YAM_9600:
+ predef--;
+ pdev = platform_device_register_simple("yam", 0, NULL, 0);
+ if (IS_ERR(pdev)) {
+ printk(KERN_ERR "yam: Failed to register firmware\n");
+ return NULL;
+ }
+ err = request_firmware(&fw, fw_name[predef], &pdev->dev);
+ platform_device_unregister(pdev);
+ if (err) {
+ printk(KERN_ERR "Failed to load firmware \"%s\"\n",
+ fw_name[predef]);
+ return NULL;
+ }
+ if (fw->size != YAM_FPGA_SIZE) {
+ printk(KERN_ERR "Bogus length %zu in firmware \"%s\"\n",
+ fw->size, fw_name[predef]);
+ release_firmware(fw);
+ return NULL;
+ }
+ bits = (unsigned char *)fw->data;
+ break;
+ default:
+ printk(KERN_ERR "yam: Invalid predef number %u\n", predef);
+ return NULL;
+ }
/* If it already exists, replace the bit data */
p = yam_data;
@@ -359,13 +404,15 @@ static unsigned char *add_mcs(unsigned char *bits, int bitrate)
/* Allocate a new mcs */
if ((p = kmalloc(sizeof(struct yam_mcs), GFP_KERNEL)) == NULL) {
printk(KERN_WARNING "YAM: no memory to allocate mcs\n");
+ release_firmware(fw);
return NULL;
}
memcpy(p->bits, bits, YAM_FPGA_SIZE);
p->bitrate = bitrate;
p->next = yam_data;
yam_data = p;
+ release_firmware(fw);
return p->bits;
}
@@ -383,9 +430,11 @@ static unsigned char *get_mcs(int bitrate)
/* Load predefined mcs data */
switch (bitrate) {
case 1200:
- return add_mcs(bits_1200, bitrate);
+ /* setting predef as YAM_1200 for loading predef 1200 mcs */
+ return add_mcs(NULL, bitrate, YAM_1200);
default:
- return add_mcs(bits_9600, bitrate);
+ /* setting predef as YAM_9600 for loading predef 9600 mcs */
+ return add_mcs(NULL, bitrate, YAM_9600);
}
}
@@ -936,7 +985,8 @@ static int yam_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
kfree(ym);
return -EINVAL;
}
- add_mcs(ym->bits, ym->bitrate);
+ /* setting predef as 0 for loading userdefined mcs data */
+ add_mcs(ym->bits, ym->bitrate, 0);
kfree(ym);
break;
@@ -1159,6 +1209,8 @@ static void __exit yam_cleanup_driver(void)
MODULE_AUTHOR("Frederic Rible F1OAT frible@teaser.fr");
MODULE_DESCRIPTION("Yam amateur radio modem driver");
MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(FIRMWARE_1200);
+MODULE_FIRMWARE(FIRMWARE_9600);
module_init(yam_init_driver);
module_exit(yam_cleanup_driver);
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