Embedded linux - Write dummy backlight device driver to mimic specific device
$30-250 USD
着払い
I have an application that controls the brightness of a screen directly by writing to "/sys/devices/platform/imx28-fb/pwm-backlight.0/backlight/pwm-backlight.0/brightness".
Since writing the application, the screen has been replaced and the kernel upgraded, so the new path does not match the path used by the application.
The application cannot be updated, so i need a dummy device driver to create the path "/sys/devices/platform/imx28-fb/pwm-backlight.0/backlight/pwm-backlight.0/brightness" , and be able to read and write a value between 0 and 4096 to the file "brightness".
The driver does not need any other function then read and write to "brightness".
The kernel version is 3.7.4.
The BSP is built using and old version of PTXDist.
プロジェクトID: #17185583
プロジェクトについて
10人のフリーランサーが、平均$148 で、この仕事に入札しています。
I have many years experience in linux driver delopment on imx6 SoC. I could do what you want. Thank you.
What driver is the one in use? Is its source code available? I feel that all that may be required is just a ln -s somewhere that the file *actually* is, if your application depends on the path that is there.
I have 2+ year of experience on Linux programing which includes adding service to kernel, device driver, kernel porting and developed application based on systems call. I will take less time to finish
Maybe a symbolic link can meet with your requirement. Event if not, I still think that writing a linux kernel driver is not the best choice.
I have a experience in Linux kernel development and have patched the mainline a couple of times. Relevant Skills and Experience Kernel programming is one my key areas of expertise and we can deliver according to the r もっと
Worked with PWM driver on a different platform. Has experience of writing character device drivers to enable sysfs entries and read/write to the same.
