diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/shared/lpc/clock/lpc-clock-config.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/shared/lpc/clock/lpc-clock-config.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/c/src/lib/libbsp/arm/shared/lpc/clock/lpc-clock-config.c b/c/src/lib/libbsp/arm/shared/lpc/clock/lpc-clock-config.c deleted file mode 100644 index b6a6dc9fb2..0000000000 --- a/c/src/lib/libbsp/arm/shared/lpc/clock/lpc-clock-config.c +++ /dev/null @@ -1,136 +0,0 @@ -/** - * @file - * - * @ingroup lpc_clock - * - * @brief Clock driver configuration. - */ - -/* - * Copyright (c) 2009-2015 embedded brains GmbH. All rights reserved. - * - * embedded brains GmbH - * Dornierstr. 4 - * 82178 Puchheim - * Germany - * <rtems@embedded-brains.de> - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#include <rtems.h> -#include <rtems/timecounter.h> - -#include <bsp/lpc-clock-config.h> -#include <bsp/lpc-timer.h> - -#ifdef ARM_MULTILIB_ARCH_V4 - -/* This is defined in ../../../shared/clockdrv_shell.h */ -void Clock_isr(rtems_irq_hdl_param arg); - -static volatile lpc_timer *const lpc_clock = - (volatile lpc_timer *) LPC_CLOCK_TIMER_BASE; - -static volatile lpc_timer *const lpc_timecounter = - (volatile lpc_timer *) LPC_CLOCK_TIMECOUNTER_BASE; - -static struct timecounter lpc_clock_tc; - -static uint32_t lpc_clock_tc_get_timecount(struct timecounter *tc) -{ - return lpc_timecounter->tc; -} - -static void lpc_clock_at_tick(void) -{ - lpc_clock->ir = LPC_TIMER_IR_MR0; -} - -static void lpc_clock_handler_install(void) -{ - rtems_status_code sc = RTEMS_SUCCESSFUL; - - sc = rtems_interrupt_handler_install( - LPC_CLOCK_INTERRUPT, - "Clock", - RTEMS_INTERRUPT_UNIQUE, - (rtems_interrupt_handler) Clock_isr, - NULL - ); - if (sc != RTEMS_SUCCESSFUL) { - rtems_fatal_error_occurred(0xdeadbeef); - } -} - -static void lpc_clock_initialize(void) -{ - uint64_t interval = ((uint64_t) LPC_CLOCK_REFERENCE - * (uint64_t) rtems_configuration_get_microseconds_per_tick()) / 1000000; - - /* Enable module */ - LPC_CLOCK_MODULE_ENABLE(); - - /* Reset timer */ - lpc_clock->tcr = LPC_TIMER_TCR_RST; - - /* Clear interrupt flags */ - lpc_clock->ir = LPC_TIMER_IR_ALL; - - /* Set timer mode */ - lpc_clock->ccr = 0; - - /* Timer is incremented every PERIPH_CLK tick */ - lpc_clock->pr = 0; - - /* Set match registers */ - lpc_clock->mr0 = (uint32_t) interval; - - /* Generate interrupt and reset counter on match with MR0 */ - lpc_clock->mcr = LPC_TIMER_MCR_MR0_INTR | LPC_TIMER_MCR_MR0_RST; - - /* No external match */ - lpc_clock->emr = 0x0; - - /* Enable timer */ - lpc_clock->tcr = LPC_TIMER_TCR_EN; - - /* Install timecounter */ - lpc_clock_tc.tc_get_timecount = lpc_clock_tc_get_timecount; - lpc_clock_tc.tc_counter_mask = 0xffffffff; - lpc_clock_tc.tc_frequency = LPC_CLOCK_REFERENCE; - lpc_clock_tc.tc_quality = RTEMS_TIMECOUNTER_QUALITY_CLOCK_DRIVER; - rtems_timecounter_install(&lpc_clock_tc); -} - -static void lpc_clock_cleanup(void) -{ - rtems_status_code sc = RTEMS_SUCCESSFUL; - - /* Disable timer */ - lpc_clock->tcr = 0x0; - - /* Remove interrupt handler */ - sc = rtems_interrupt_handler_remove( - LPC_CLOCK_INTERRUPT, - (rtems_interrupt_handler) Clock_isr, - NULL - ); - if (sc != RTEMS_SUCCESSFUL) { - rtems_fatal_error_occurred(0xdeadbeef); - } -} - -#define Clock_driver_support_at_tick() lpc_clock_at_tick() -#define Clock_driver_support_initialize_hardware() lpc_clock_initialize() -#define Clock_driver_support_install_isr(isr) \ - lpc_clock_handler_install() - -#define Clock_driver_support_shutdown_hardware() lpc_clock_cleanup() - -/* Include shared source clock driver code */ -#include "../../../../shared/clockdrv_shell.h" - -#endif /* ARM_MULTILIB_ARCH_V4 */ |