HELP:porting linux PXA audio driver to RTLinux(RTLinux core driver)
Dear Friends, I am trying to port Linux PXA audio driver to RTLinux. I am using pxa-ac7.c and pxa-audio.c and eliminated sound_core.c, and i will register two device /dev/mixer and /dev/dsp to RTLinux kernel. The real need is, i wants to generate a sin wave using audio codec. With in 600us DMA controller should fill the codec FIFO, if that is not met distortion will happen. I think normal linux interrupts and Process scheduling may cause some problems. In porting it seems difficult to port kernel scheduling , dynamic memory allocation(for DMA) and synchronization. Please help me Nobin Mathew __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
HELP:porting linux PXA audio driver to RTLinux(RTLinux core driver)
Dear Friends, I am trying to port Linux PXA audio driver to RTLinux. I am using pxa-ac7.c and pxa-audio.c and eliminated sound_core.c, and i will register two device /dev/mixer and /dev/dsp to RTLinux kernel. The real need is, i wants to generate a sin wave using audio codec. With in 600us DMA controller should fill the codec FIFO, if that is not met distortion will happen. I think normal linux interrupts and Process scheduling may cause some problems. In porting it seems difficult to port kernel scheduling , dynamic memory allocation(for DMA) and synchronization. Please help me Nobin Mathew __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
HELP:(VIPER BOARD)AC'97 controller driver for rtlinux(rtlinux core driver)
Dear friends, I am trying to develop a codec driver (rtlinux driver) from scratch. In Viper board (PXA255) physical memory range 0x4000-0x43FF is used by the PXA255 peripherals.In that address range 0x4050-0x405005FC is needed for AC'97 controller registers. Is this memory range is already mapped to virtual address space, else How to map this to virtual address space. When i tried ioremap() it is giving same virtual address with different physical address(i tried ioremap with another driver(same board)with different physical memory address) Or if this driver already available for RTLinux Please sent me. Nobin Mathew __ Do you Yahoo!? Yahoo! Personals - Better first dates. More second dates. http://personals.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
HELP:(VIPER BOARD)AC'97 controller driver for rtlinux(rtlinux core driver)
Dear friends, I am trying to develop a codec driver (rtlinux driver) from scratch. In Viper board (PXA255) physical memory range 0x4000-0x43FF is used by the PXA255 peripherals.In that address range 0x4050-0x405005FC is needed for AC'97 controller registers. Is this memory range is already mapped to virtual address space, else How to map this to virtual address space. When i tried ioremap() it is giving same virtual address with different physical address(i tried ioremap with another driver(same board)with different physical memory address) Or if this driver already available for RTLinux Please sent me. Nobin Mathew __ Do you Yahoo!? Yahoo! Personals - Better first dates. More second dates. http://personals.yahoo.com - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
HELP: PC104 IO card driver Problem
Dear Friends, Can anybody Help me in this Pc104 driver Problem; What is the basics steps in doing read and write on Pc104 cards. Deatails Given Below: I am writing a Linux device driver for Diamond systems IR104 digital IO card. This is a PC104 bus device(that means it ISA bus compatible). The Platform is Arcom Viper borad(with support for PC104), This is a Xscale, Little endian Platform. The Specification of PC104 interface given in Viper borad manual is: 0x3C00-0x3CFF PC/104 memory space(16MB) 0x3000-0x33FF PC/104 IO space(1KB) Specification given in IR104 manual is: I made the jumber setting so that, the IO space addresses taken by 8 registers will be 0x300-0x307 The driver should do read and write on this registers(character device driver). I took two approaches one is: i added IO space and 0x300, did inb() and oub().(IO space base address and 0x300) otherway i did ioremap on added result, did inb() and oub(). In the second method: I did same procedures using IO memory space both methods are giving errors, i think that is related to paging. i think there is a need for disabling paging in this space. Please help regarding this. How to solve this. Nobin Mathew __ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
HELP: PC104 IO card driver Problem
Dear Friends, Can anybody Help me in this Pc104 driver Problem; What is the basics steps in doing read and write on Pc104 cards. Deatails Given Below: I am writing a Linux device driver for Diamond systems IR104 digital IO card. This is a PC104 bus device(that means it ISA bus compatible). The Platform is Arcom Viper borad(with support for PC104), This is a Xscale, Little endian Platform. The Specification of PC104 interface given in Viper borad manual is: 0x3C00-0x3CFF PC/104 memory space(16MB) 0x3000-0x33FF PC/104 IO space(1KB) Specification given in IR104 manual is: I made the jumber setting so that, the IO space addresses taken by 8 registers will be 0x300-0x307 The driver should do read and write on this registers(character device driver). I took two approaches one is: i added IO space and 0x300, did inb() and oub().(IO space base address and 0x300) otherway i did ioremap on added result, did inb() and oub(). In the second method: I did same procedures using IO memory space both methods are giving errors, i think that is related to paging. i think there is a need for disabling paging in this space. Please help regarding this. How to solve this. Nobin Mathew __ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
