> If you want to be able to manipulate the LED in other ways than the
> driver supports you could look into adding a debugfs file that
> manipulates the driver's led variables (allow_blinking,
> last_blink_time, ...). There is already a readable led file in debugfs,
> but not writable.
>
> Reinette
Ok, I have tried that with partial success. It allows me to change led
status "mid-flight" but if led is blinking it sometimes works only
after second try. Also my understanding of C and kernel programming is
very limited so I probably made some mistakes. Could you please look
at it?
Thank you.
--- iwl-debugfs.c.old 2010-05-14 15:20:16.000000000 +0200
+++ iwl-debugfs.c 2010-05-28 12:37:47.706991952 +0200
@@ -40,6 +40,7 @@
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-calib.h"
+#include "iwl-agn-led.c"
/* create and remove of files */
#define DEBUGFS_ADD_FILE(name, parent, mode) do { \
@@ -702,6 +703,34 @@
return ret;
}
+static ssize_t iwl_dbgfs_ledw_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+
+ struct iwl_priv *priv = file->private_data;
+ char buf[8];
+ int buf_size;
+ int status;
+
+ memset(buf, 0, sizeof(buf));
+ buf_size = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+ if (sscanf(buf, "%d", &status) != 1)
+ return -EFAULT;
+
+ priv->last_blink_time = 0;
+ priv->allow_blinking = 0; // i set the mode manually -> stop
blinking (doesn't work very well)
+
+ if(status == 0)
+ iwl_led_off_reg(priv);
+ else
+ iwl_led_on_reg(priv);
+
+ return count;
+}
+
static ssize_t iwl_dbgfs_thermal_throttling_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
@@ -872,6 +901,7 @@
DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
DEBUGFS_READ_FILE_OPS(qos);
DEBUGFS_READ_FILE_OPS(led);
+DEBUGFS_WRITE_FILE_OPS(ledw);
DEBUGFS_READ_FILE_OPS(thermal_throttling);
DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override);
@@ -2334,6 +2364,7 @@
DEBUGFS_ADD_FILE(interrupt, dir_data, S_IWUSR | S_IRUSR);
DEBUGFS_ADD_FILE(qos, dir_data, S_IRUSR);
DEBUGFS_ADD_FILE(led, dir_data, S_IRUSR);
+ DEBUGFS_ADD_FILE(ledw, dir_data, S_IWUSR);
DEBUGFS_ADD_FILE(sleep_level_override, dir_data, S_IWUSR | S_IRUSR);
DEBUGFS_ADD_FILE(current_sleep_command, dir_data, S_IRUSR);
DEBUGFS_ADD_FILE(thermal_throttling, dir_data, S_IRUSR);
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