diff options
| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2002-11-13 17:55:09 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2002-11-13 17:55:09 +0000 |
| commit | 3d6669ccf7960af91b93d5b8781b78160547c0d1 (patch) | |
| tree | 80667b374c0bcd965f95072ee63cbe5902d98509 /c/src/lib/libbsp/arm/edb7312/clock/clockdrv.c | |
| parent | 2002-11-13 Jay Monkman <jtm@smoothsmoothie.com> (diff) | |
| download | rtems-3d6669ccf7960af91b93d5b8781b78160547c0d1.tar.bz2 | |
2002-11-13 Jay Monkman <jtm@smoothsmoothie.com>
* New BSP.
* .cvsignore, ChangeLog, Makefile.am, bsp_specs, configure.ac, README,
times, clock/.cvsignore, clock/Makefile.am, clock/clockdrv.c,
console/.cvsignore, console/Makefile.am, console/uart.c,
include/.cvsignore, include/Makefile.am, include/bsp.h,
include/ep7312.h, irq/.cvsignore, irq/Makefile.am, irq/bsp_irq_asm.S,
irq/bsp_irq_init.c, irq/irq.c, irq/irq.h, network/Makefile.am,
network/network.c, start/.cvsignore, start/Makefile.am,
start/start.S, startup/.cvsignore, startup/Makefile.am,
startup/bspstart.c, startup/exit.c, startup/linkcmds,
timer/.cvsignore, timer/Makefile.am, timer/timer.c,
wrapup/.cvsignore, wrapup/Makefile.am: New file.
Diffstat (limited to 'c/src/lib/libbsp/arm/edb7312/clock/clockdrv.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/edb7312/clock/clockdrv.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/edb7312/clock/clockdrv.c b/c/src/lib/libbsp/arm/edb7312/clock/clockdrv.c new file mode 100644 index 0000000000..46a22ca4a9 --- /dev/null +++ b/c/src/lib/libbsp/arm/edb7312/clock/clockdrv.c @@ -0,0 +1,78 @@ +/* + * Cirrus EP7312 Clock driver + * + * Copyright (c) 2002 by Jay Monkman <jtm@smoothsmoothie.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * + * http://www.OARcorp.com/rtems/license.html. + * + * + * $Id$ +*/ +#include <rtems.h> +#include <ep7312.h> +#include <bsp.h> +#include <irq.h> + + +rtems_isr clock_isr(rtems_vector_number vector); +rtems_isr Clock_isr(rtems_vector_number vector); +static void clock_isr_on(const rtems_irq_connect_data *unused); +static void clock_isr_off(const rtems_irq_connect_data *unused); +static int clock_isr_is_on(const rtems_irq_connect_data *irq); + +rtems_irq_connect_data clock_isr_data = {BSP_TC1OI, + (rtems_irq_hdl)Clock_isr, + clock_isr_on, + clock_isr_off, + clock_isr_is_on, + 3, + 0 }; + +#define CLOCK_VECTOR 0 + +#define Clock_driver_support_at_tick() \ + do { \ + *EP7312_TC1EOI = 0xffffffff; \ + } while(0) + +#define Clock_driver_support_install_isr( _new, _old ) \ + do { \ + BSP_install_rtems_irq_handler(&clock_isr_data); \ + } while(0) + + +/* + * Set up the clock hardware +*/ +#define Clock_driver_support_initialize_hardware() \ + do { \ + *EP7312_SYSCON1 |= EP7312_SYSCON1_TC1_PRESCALE; \ + *EP7312_TC1D =(BSP_Configuration.microseconds_per_tick * 2000)/1000000; \ + *EP7312_TC1EOI = 0xFFFFFFFF; \ + } while (0) + +#define Clock_driver_support_shutdown_hardware() \ + do { \ + BSP_remove_rtems_irq_handler(&clock_isr_data); \ + } while (0) + +static void clock_isr_on(const rtems_irq_connect_data *unused) +{ + return; +} + +static void clock_isr_off(const rtems_irq_connect_data *unused) +{ + return; +} + +static int clock_isr_is_on(const rtems_irq_connect_data *irq) +{ + return 1; +} + + +#include "../../../shared/clockdrv_shell.c" |