Hello Deepak, On Tue, 25 Sep 2007 17:33:59 +0630 Deepak Gaur wrote:
> Hi all, > > I am writing a kernel module which is required to parse the characters > received from a > device attached to MPC8560 SCC2 (UART slave mode) on serial interface. This > SCC is > required to be configured for single-buffer, character based operation. > Moreover on > another SCC (SCC1 UART master mode) the board debug interface(console) is > connected. > > While trying to figure out CPM UART device driver interface available in file > drivers/serial/cpm_uart/cpm_uart_core.c for my kernel module I found that > some of the > functions are available when CPM_UART_CONSOLE is enabled. > > My doubt is regarding status of this flag for my hardware setup. Should this > flag be > enabled or not. If it is required to be enabled for supporting SCC1 then how > SCC2 will > be handled? > well, console is normally initialized early, before actual uart driver, that's why those bits are hidden behind CPM_UART_CONSOLE. I suppose you'll just have to get SCC2 uart to work and use ttyCPM1... or if you application is more specific, write another driver using cpm_uart_core.c as a reference. But I would not recommend using CPM_UART_CONSOLE stuff - it's pretty restricted and assumes very early triggering, with plenty of stuff not initialized. > As I am a novice in this area , I shall be grateful if you please guide me in > understanding this driver code. > > with regards, > > Deepak Gaur > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-dev -- Sincerely, Vitaly _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
