*
* Sample code on how to use request_firmware() from drivers.
*
- * Note that register_firmware() is currently useless.
- *
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
+#include <linux/string.h>
#include "linux/firmware.h"
-#define WE_CAN_NEED_FIRMWARE_BEFORE_USERSPACE_IS_AVAILABLE
-#ifdef WE_CAN_NEED_FIRMWARE_BEFORE_USERSPACE_IS_AVAILABLE
-char __init inkernel_firmware[] = "let's say that this is firmware\n";
-#endif
-
static struct device ghost_device = {
- .name = "Ghost Device",
.bus_id = "ghost0",
};
u8 buf[size+1];
memcpy(buf, firmware, size);
buf[size] = '\0';
- printk("firmware_sample_driver: firmware: %s\n", buf);
+ printk(KERN_INFO "firmware_sample_driver: firmware: %s\n", buf);
}
static void sample_probe_default(void)
{
/* uses the default method to get the firmware */
const struct firmware *fw_entry;
- printk("firmware_sample_driver: a ghost device got inserted :)\n");
+ printk(KERN_INFO "firmware_sample_driver: a ghost device got inserted :)\n");
if(request_firmware(&fw_entry, "sample_driver_fw", &ghost_device)!=0)
{
/* NOTE: This currently doesn't work */
- printk("firmware_sample_driver: a ghost device got inserted :)\n");
+ printk(KERN_INFO "firmware_sample_driver: a ghost device got inserted :)\n");
if(request_firmware(NULL, "sample_driver_fw", &ghost_device)!=0)
{
return;
}
- printk("firmware_sample_driver: device pointer \"%s\"\n",
+ printk(KERN_INFO "firmware_sample_driver: device pointer \"%s\"\n",
(char *)context);
sample_firmware_load(fw->data, fw->size);
}
{
/* Let's say that I can't sleep */
int error;
- error = request_firmware_nowait (THIS_MODULE,
+ error = request_firmware_nowait (THIS_MODULE, FW_ACTION_NOHOTPLUG,
"sample_driver_fw", &ghost_device,
"my device pointer",
sample_probe_async_cont);
static int sample_init(void)
{
-#ifdef WE_CAN_NEED_FIRMWARE_BEFORE_USERSPACE_IS_AVAILABLE
- register_firmware("sample_driver_fw", inkernel_firmware,
- sizeof(inkernel_firmware));
-#endif
device_initialize(&ghost_device);
/* since there is no real hardware insertion I just call the
* sample probe functions here */