Serkan, I haven't tried modifying the PWM driver myself, but when I was investigating the PRGB problem, I found that the PINMUX1 settings are being modified for the PWMs in arch/arm/mach-davinci/clock.c. The function name is:
static int board_setup_peripheral(unsigned int id) You will need to search the kernel to find where this function is being called (presumably from the PWM driver code) with the id parameter set to any of DAVINCI_LPSC_PWM0, DAVINCI_LPSC_PWM1, or DAVINCI_LPSC_PWM2. I suspect you will have to remove these calls or somehow modify the configuration so these calls never occur. I hope this points you in the right direction. I am interested to know what solution you find. -Greg Gregory B. Ingersoll, M.Sc., P.E. // senior electrical engineer LOGIC Product Development 411 Washington Ave N. Suite 400 Minneapolis, MN 55401 T // 612.436.5163 F // 612.672.9489 [EMAIL PROTECTED] www.logicpd.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of serkan erdogan Sent: Wednesday, March 05, 2008 08:23 To: [email protected] Subject: DM355 PWM Driver & PINMUX1 Setting ! Hii Friends, I have posted a mail asking how to PRGB interface problem which the COUT pins are not active. Thanks for very valuable answers. I have disabled PWM driver and know PRGB is working correctly but now i need one of pwm pins on DM355. It must PWM3 ofcourse because it is not multiplexed with PRGB pins so i need to edit PWM driver like Gregory B. Ingersoll says from LOGIC Product Development. But when i opened the davinci_pwm.c and davinci_pwh.h files i couldn't find any codeline that set PINMUX1 for used to assign pins for PWM . It just contains a line "#define PINMUX1 __REG(0x01c40004)" for defining the register but not anymore code for setting this register. Please tell me there is another file which reachs this register and set it when davinci_pwm driver is enabled. If my PRGB is working properly while PWM driver disabled in configuration script and there is any code that sets the PINMUX1 register in PWM driver file so as a result there must be any code file to set this register before dawinci_pwm.o object file take its turn. I want to find this external file(s) to understand the all of picture. Actually, i also wonder the sequence of driver loading in davinci kernel load. Which file includes the data about which driver or module will be loaded after which driver? Why the pwm driver is chosen to be loaded after fbdev driver? I also want play with this driver registration squence but where to find additional information about this driver registration process in kernel source tree. Thanks so much for reading patiently and further valuable help. Serkan Erdoğan. _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
