diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/tms570/clock/clock.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/tms570/clock/clock.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/c/src/lib/libbsp/arm/tms570/clock/clock.c b/c/src/lib/libbsp/arm/tms570/clock/clock.c deleted file mode 100644 index 091bfda2b6..0000000000 --- a/c/src/lib/libbsp/arm/tms570/clock/clock.c +++ /dev/null @@ -1,190 +0,0 @@ -/** - * @file clock.c - * - * @ingroup tms570 - * - * @brief clock functions definitions. - */ - -/* - * Copyright (c) 2014 Premysl Houdek <kom541000@gmail.com> - * - * Google Summer of Code 2014 at - * Czech Technical University in Prague - * Zikova 1903/4 - * 166 36 Praha 6 - * Czech Republic - * - * Based on LPC24xx and LPC1768 BSP - * by embedded brains GmbH and others - * - * 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 <stdlib.h> - -#include <rtems.h> -#include <bsp.h> -#include <bsp/irq.h> -#include <bsp/tms570-rti.h> -#include <rtems/timecounter.h> - -static struct timecounter tms570_rti_tc; - -static uint32_t tms570_rti_get_timecount(struct timecounter *tc) -{ - return TMS570_RTI.CNT[0].FRCx; -} - -#ifndef TMS570_PREFERRED_TC_FREQUENCY -/* - * Define preferred main time base counter frequency - * The value of 1MHz is the best matching RTEMS - * timing system because then there is no need - * to scale RTEMS configuration microseconds_per_tick - * parameter - */ -#define TMS570_PREFERRED_TC_FREQUENCY 1000000 -#endif /* TMS570_PREFERRED_TC_FREQUENCY */ - -/** - * @brief Initialize the HW peripheral for clock driver - * - * Clock driver is implemented by RTI module - * - * @retval Void - */ -static void tms570_clock_driver_support_initialize_hardware( void ) -{ - - uint32_t microsec_per_tick; - uint32_t tc_frequency; - uint32_t tc_prescaler; - uint32_t tc_increments_per_tick; - - microsec_per_tick = rtems_configuration_get_microseconds_per_tick(); - tc_frequency = TMS570_PREFERRED_TC_FREQUENCY; - - tc_prescaler = (BSP_PLL_OUT_CLOCK + tc_frequency) / (tc_frequency * 2); - - /* Recompute actual most close frequency which can be realized */ - tc_frequency = (BSP_PLL_OUT_CLOCK + tc_prescaler) / (tc_prescaler * 2); - - /* - * Recompute tick period to adjust for configurable or exact - * preferred time base 1 usec resolution. - */ - tc_increments_per_tick = ((uint64_t)microsec_per_tick * tc_frequency + - 500000) / 1000000; - - /* Hardware specific initialize */ - TMS570_RTI.GCTRL = 0; - TMS570_RTI.CNT[0].CPUCx = tc_prescaler - 1; - TMS570_RTI.TBCTRL = TMS570_RTI_TBCTRL_INC; - TMS570_RTI.CAPCTRL = 0; - TMS570_RTI.COMPCTRL = 0; - /* set counter to zero */ - TMS570_RTI.CNT[0].UCx = 0; - TMS570_RTI.CNT[0].FRCx = 0; - /* clear interrupts*/ - TMS570_RTI.CLEARINTENA = TMS570_RTI_CLEARINTENA_CLEAROVL1INT | - TMS570_RTI_CLEARINTENA_CLEAROVL0INT | - TMS570_RTI_CLEARINTENA_CLEARTBINT | - TMS570_RTI_CLEARINTENA_CLEARDMA3 | - TMS570_RTI_CLEARINTENA_CLEARDMA2 | - TMS570_RTI_CLEARINTENA_CLEARDMA1 | - TMS570_RTI_CLEARINTENA_CLEARDMA0 | - TMS570_RTI_CLEARINTENA_CLEARINT3 | - TMS570_RTI_CLEARINTENA_CLEARINT2 | - TMS570_RTI_CLEARINTENA_CLEARINT1 | - TMS570_RTI_CLEARINTENA_CLEARINT0; - TMS570_RTI.INTFLAG = TMS570_RTI_INTFLAG_OVL1INT | - TMS570_RTI_INTFLAG_OVL0INT | - TMS570_RTI_INTFLAG_TBINT | - TMS570_RTI_INTFLAG_INT3 | - TMS570_RTI_INTFLAG_INT2 | - TMS570_RTI_INTFLAG_INT1 | - TMS570_RTI_INTFLAG_INT0; - /* set timer */ - TMS570_RTI.CMP[0].COMPx = TMS570_RTI.CNT[0].FRCx + tc_increments_per_tick; - TMS570_RTI.COMP0CLR = TMS570_RTI.CMP[0].COMPx + tc_increments_per_tick / 2; - TMS570_RTI.CMP[0].UDCPx = tc_increments_per_tick; - /* enable interupt */ - TMS570_RTI.SETINTENA = TMS570_RTI_SETINTENA_SETINT0; - /* enable timer */ - TMS570_RTI.GCTRL = TMS570_RTI_GCTRL_CNT0EN; - /* set timecounter */ - tms570_rti_tc.tc_get_timecount = tms570_rti_get_timecount; - tms570_rti_tc.tc_counter_mask = 0xffffffff; - tms570_rti_tc.tc_frequency = tc_frequency; - tms570_rti_tc.tc_quality = RTEMS_TIMECOUNTER_QUALITY_CLOCK_DRIVER; - rtems_timecounter_install(&tms570_rti_tc); -} - -/** - * @brief Clears interrupt source - * - * @retval Void - */ -static void tms570_clock_driver_support_at_tick( void ) -{ - TMS570_RTI.INTFLAG = TMS570_RTI_INTFLAG_INT0; -} - -/** - * @brief registers RTI interrupt handler - * - * @param[in] Clock_isr new ISR handler - * @param[in] Old_ticker old ISR handler (unused and type broken) - * - * @retval Void - */ -static void tms570_clock_driver_support_install_isr( - rtems_isr_entry Clock_isr -) -{ - rtems_status_code sc = RTEMS_SUCCESSFUL; - - sc = rtems_interrupt_handler_install( - TMS570_IRQ_TIMER_0, - "Clock", - RTEMS_INTERRUPT_UNIQUE, - (rtems_interrupt_handler) Clock_isr, - NULL - ); - if ( sc != RTEMS_SUCCESSFUL ) { - rtems_fatal_error_occurred(0xdeadbeef); - } -} - -/** - * @brief disables RTI interrupt - * - * Called when closing clock driver - * - * @retval Void - */ -static void tms570_clock_driver_support_shutdown_hardware( void ) -{ - /* turn off the timer interrupts */ - TMS570_RTI.CLEARINTENA = TMS570_RTI_CLEARINTENA_CLEAROVL0INT | - TMS570_RTI_CLEARINTENA_CLEARINT0; -} - -#define Clock_driver_support_initialize_hardware \ - tms570_clock_driver_support_initialize_hardware -#define Clock_driver_support_at_tick \ - tms570_clock_driver_support_at_tick -#define Clock_driver_support_initialize_hardware \ - tms570_clock_driver_support_initialize_hardware -#define Clock_driver_support_shutdown_hardware \ - tms570_clock_driver_support_shutdown_hardware - -#define Clock_driver_support_install_isr(Clock_isr) \ - tms570_clock_driver_support_install_isr( Clock_isr ) - -void Clock_isr(void *arg); /* to supress warning */ - -#include "../../../shared/clockdrv_shell.h" |