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-rw-r--r--samples/firmware_class/firmware_sample_driver.c45
-rw-r--r--samples/firmware_class/firmware_sample_firmware_class.c33
2 files changed, 40 insertions, 38 deletions
diff --git a/samples/firmware_class/firmware_sample_driver.c b/samples/firmware_class/firmware_sample_driver.c
index ff0f2f2..165cff9 100644
--- a/samples/firmware_class/firmware_sample_driver.c
+++ b/samples/firmware_class/firmware_sample_driver.c
@@ -12,8 +12,7 @@
#include <linux/init.h>
#include <linux/device.h>
#include <linux/string.h>
-
-#include "linux/firmware.h"
+#include <linux/firmware.h>
static struct device ghost_device = {
.bus_id = "ghost0",
@@ -31,11 +30,14 @@ static void sample_firmware_load(char *firmware, int size)
static void sample_probe_default(void)
{
/* uses the default method to get the firmware */
- const struct firmware *fw_entry;
- printk(KERN_INFO "firmware_sample_driver: a ghost device got inserted :)\n");
+ const struct firmware *fw_entry;
+ int retval;
+
+ printk(KERN_INFO "firmware_sample_driver: "
+ "a ghost device got inserted :)\n");
- if(request_firmware(&fw_entry, "sample_driver_fw", &ghost_device)!=0)
- {
+ retval = request_firmware(&fw_entry, "sample_driver_fw", &ghost_device);
+ if (retval) {
printk(KERN_ERR
"firmware_sample_driver: Firmware not available\n");
return;
@@ -47,17 +49,20 @@ static void sample_probe_default(void)
/* finish setting up the device */
}
+
static void sample_probe_specific(void)
{
+ int retval;
/* Uses some specific hotplug support to get the firmware from
* userspace directly into the hardware, or via some sysfs file */
/* NOTE: This currently doesn't work */
- printk(KERN_INFO "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)
- {
+ retval = request_firmware(NULL, "sample_driver_fw", &ghost_device);
+ if (retval) {
printk(KERN_ERR
"firmware_sample_driver: Firmware load failed\n");
return;
@@ -70,7 +75,7 @@ static void sample_probe_specific(void)
}
static void sample_probe_async_cont(const struct firmware *fw, void *context)
{
- if(!fw){
+ if (!fw) {
printk(KERN_ERR
"firmware_sample_driver: firmware load failed\n");
return;
@@ -80,19 +85,18 @@ static void sample_probe_async_cont(const struct firmware *fw, void *context)
(char *)context);
sample_firmware_load(fw->data, fw->size);
}
+
static void sample_probe_async(void)
{
/* Let's say that I can't sleep */
int error;
- error = request_firmware_nowait (THIS_MODULE, FW_ACTION_NOHOTPLUG,
- "sample_driver_fw", &ghost_device,
- "my device pointer",
- sample_probe_async_cont);
- if(error){
- printk(KERN_ERR
- "firmware_sample_driver:"
+ error = request_firmware_nowait(THIS_MODULE, FW_ACTION_NOHOTPLUG,
+ "sample_driver_fw", &ghost_device,
+ "my device pointer",
+ sample_probe_async_cont);
+ if (error)
+ printk(KERN_ERR "firmware_sample_driver:"
" request_firmware_nowait failed\n");
- }
}
static int sample_init(void)
@@ -105,11 +109,12 @@ static int sample_init(void)
sample_probe_async();
return 0;
}
+
static void __exit sample_exit(void)
{
}
-module_init (sample_init);
-module_exit (sample_exit);
+module_init(sample_init);
+module_exit(sample_exit);
MODULE_LICENSE("GPL");
diff --git a/samples/firmware_class/firmware_sample_firmware_class.c b/samples/firmware_class/firmware_sample_firmware_class.c
index 2799c47..9392116 100644
--- a/samples/firmware_class/firmware_sample_firmware_class.c
+++ b/samples/firmware_class/firmware_sample_firmware_class.c
@@ -25,30 +25,27 @@ MODULE_LICENSE("GPL");
static inline struct class_device *to_class_dev(struct kobject *obj)
{
- return container_of(obj,struct class_device,kobj);
+ return container_of(obj, struct class_device, kobj);
}
+
static inline
struct class_device_attribute *to_class_dev_attr(struct attribute *_attr)
{
- return container_of(_attr,struct class_device_attribute,attr);
+ return container_of(_attr, struct class_device_attribute, attr);
}
-int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr);
-int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr);
-
struct firmware_priv {
char fw_id[FIRMWARE_NAME_MAX];
s32 loading:2;
u32 abort:1;
};
-extern struct class firmware_class;
-
static ssize_t firmware_loading_show(struct class_device *class_dev, char *buf)
{
struct firmware_priv *fw_priv = class_get_devdata(class_dev);
return sprintf(buf, "%d\n", fw_priv->loading);
}
+
static ssize_t firmware_loading_store(struct class_device *class_dev,
const char *buf, size_t count)
{
@@ -57,7 +54,7 @@ static ssize_t firmware_loading_store(struct class_device *class_dev,
fw_priv->loading = simple_strtol(buf, NULL, 10);
- switch(fw_priv->loading){
+ switch (fw_priv->loading) {
case -1:
/* abort load an panic */
break;
@@ -65,7 +62,7 @@ static ssize_t firmware_loading_store(struct class_device *class_dev,
/* setup load */
break;
case 0:
- if(prev_loading==1){
+ if (prev_loading == 1) {
/* finish load and get the device back to working
* state */
}
@@ -130,24 +127,24 @@ static int fw_setup_class_device(struct class_device *class_dev,
class_dev->class = &firmware_class,
class_set_devdata(class_dev, fw_priv);
retval = class_device_register(class_dev);
- if (retval){
+ if (retval) {
printk(KERN_ERR "%s: class_device_register failed\n",
- __FUNCTION__);
+ __func__);
goto error_free_fw_priv;
}
retval = sysfs_create_bin_file(&class_dev->kobj, &firmware_attr_data);
- if (retval){
+ if (retval) {
printk(KERN_ERR "%s: sysfs_create_bin_file failed\n",
- __FUNCTION__);
+ __func__);
goto error_unreg_class_dev;
}
retval = class_device_create_file(class_dev,
&class_device_attr_loading);
- if (retval){
+ if (retval) {
printk(KERN_ERR "%s: class_device_create_file failed\n",
- __FUNCTION__);
+ __func__);
goto error_remove_data;
}
@@ -183,16 +180,16 @@ static int __init firmware_sample_init(void)
device_initialize(&my_device);
class_dev = kmalloc(sizeof(struct class_device), GFP_KERNEL);
- if(!class_dev)
+ if (!class_dev)
return -ENOMEM;
error = fw_setup_class_device(class_dev, "my_firmware_image",
&my_device);
- if(error){
+ if (error) {
kfree(class_dev);
return error;
}
- return 0;
+ return 0;
}
static void __exit firmware_sample_exit(void)
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