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-rw-r--r--c/src/lib/libbsp/arm/lpc176x/misc/io.c349
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diff --git a/c/src/lib/libbsp/arm/lpc176x/misc/io.c b/c/src/lib/libbsp/arm/lpc176x/misc/io.c
deleted file mode 100644
index c25fe94c0b..0000000000
--- a/c/src/lib/libbsp/arm/lpc176x/misc/io.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/**
- * @file io.c
- *
- * @ingroup lpc176x
- *
- * @brief Input/output module methods.
- */
-
-/*
- * Copyright (c) 2014 Taller Technologies.
- *
- * @author Boretto Martin (martin.boretto@tallertechnologies.com)
- * @author Diaz Marcos (marcos.diaz@tallertechnologies.com)
- * @author Lenarduzzi Federico (federico.lenarduzzi@tallertechnologies.com)
- * @author Daniel Chicco (daniel.chicco@tallertechnologies.com)
- *
- * 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/status-checks.h>
-#include <bsp.h>
-#include <bsp/io.h>
-#include <bsp/start.h>
-#include <bsp/system-clocks.h>
-
-/**
- * @brief Modules table according to the LPC176x
- */
-static const lpc176x_module_entry lpc176x_module_table[] = {
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_WD, 0, 1, 0 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_ADC, 1, 1, 12 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_CAN_0, 1, 1, 13 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_CAN_1, 1, 1, 14 ),
- LPC176X_MODULE_ENTRY(LPC176X_MODULE_ACCF, 0, 1, 15),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_DAC, 0, 1, 11 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_GPDMA, 1, 1, 29 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_GPIO, 0, 1, 15 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_I2S, 1, 1, 27 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_MCI, 1, 1, 28 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_MCPWM, 1, 1, 17 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_PCB, 0, 1, 18 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_PWM_0, 1, 1, 5 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_PWM_1, 1, 1, 6 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_QEI, 1, 1, 18 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_RTC, 1, 1, 9 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_SYSCON, 0, 1, 30 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_TIMER_0, 1, 1, 1 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_TIMER_1, 1, 1, 2 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_TIMER_2, 1, 1, 22 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_TIMER_3, 1, 1, 23 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_UART_0, 1, 1, 3 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_UART_1, 1, 1, 4 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_UART_2, 1, 1, 24 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_UART_3, 1, 1, 25 ),
- LPC176X_MODULE_ENTRY( LPC176X_MODULE_USB, 1, 0, 31 )
-};
-
-inline void lpc176x_pin_select(
- const uint32_t pin,
- const lpc176x_pin_function function
-)
-{
- assert( pin <= LPC176X_IO_INDEX_MAX
- && function < LPC176X_PIN_FUNCTION_COUNT );
- const uint32_t pin_selected = LPC176X_PIN_SELECT( pin );
- volatile uint32_t *const pinsel = &LPC176X_PINSEL[ pin_selected ];
- const uint32_t shift = LPC176X_PIN_SELECT_SHIFT( pin );
- *pinsel = SET_FIELD( *pinsel, function,
- LPC176X_PIN_SELECT_MASK << shift, shift );
-}
-
-void lpc176x_pin_set_mode(
- const uint32_t pin,
- const lpc176x_pin_mode mode
-)
-{
- assert( pin <= LPC176X_IO_INDEX_MAX
- && mode < LPC176X_PIN_MODE_COUNT );
- const uint32_t pin_selected = LPC176X_PIN_SELECT( pin );
- volatile uint32_t *const pinmode = &LPC176X_PINMODE[ pin_selected ];
- const uint32_t shift = LPC176X_PIN_SELECT_SHIFT( pin );
- *pinmode = SET_FIELD( *pinmode, mode,
- LPC176X_PIN_SELECT_MASK << shift, shift );
-}
-
-/**
- * @brief Checks if the module has power.
- *
- * @param has_power Power.
- * @param index Index to shift.
- * @param turn_on Turn on/off the power.
- * @param level Interrupts value.
- */
-static rtems_status_code check_power(
- const bool has_power,
- const unsigned index,
- const bool turn_on,
- rtems_interrupt_level level
-)
-{
- rtems_status_code status_code = RTEMS_INVALID_NUMBER;
-
- if ( index <= LPC176X_MODULE_BITS_COUNT ) {
- if ( has_power ) {
- rtems_interrupt_disable( level );
-
- if ( turn_on ) {
- LPC176X_SCB.pconp |= 1u << index;
- } else {
- LPC176X_SCB.pconp &= ~( 1u << index );
- }
-
- rtems_interrupt_enable( level );
- }
-
- /* else implies that the module has not power. Also,
- there is nothing to do. */
-
- status_code = RTEMS_SUCCESSFUL;
- }
-
- /* else implies an invalid index number. Also, the function
- does not return successful. */
-
- return status_code;
-}
-
-/**
- * @brief Sets the correct value according to the specific peripheral clock.
- *
- * @param is_first_pclksel Represents the first pclksel.
- * @param clock The clock to set for this module.
- * @param clock_shift Value to clock shift.
- */
-static inline void set_pclksel_value(
- const uint32_t pclksel,
- const lpc176x_module_clock clock,
- const unsigned clock_shift
-)
-{
- assert( pclksel < LPC176X_SCB_PCLKSEL_COUNT );
- const uint32_t setclock = ( clock << clock_shift );
- const uint32_t mask = ~( LPC176X_MODULE_CLOCK_MASK << clock_shift );
- LPC176X_SCB.pclksel[ pclksel ] = ( LPC176X_SCB.pclksel[ pclksel ] & mask ) |
- setclock;
-}
-
-/**
- * @brief Checks if the module has clock.
- *
- * @param has_clock Clock.
- * @param index Index to shift.
- * @param clock The clock to set for this module.
- * @param level Interrupts value.
- */
-static rtems_status_code check_clock(
- const bool has_clock,
- const unsigned index,
- const lpc176x_module_clock clock,
- rtems_interrupt_level level
-)
-{
- rtems_status_code status_code = RTEMS_INVALID_NUMBER;
-
- if ( index <= LPC176X_MODULE_BITS_COUNT ) {
- if ( has_clock ) {
- unsigned clock_shift = 2u * index;
- rtems_interrupt_disable( level );
-
- if ( clock_shift < LPC176X_MODULE_BITS_COUNT ) {
- /* Sets the pclksel 0. */
- set_pclksel_value( LPC176X_SCB_PCLKSEL0, clock, clock_shift );
- } else {
- /* Sets the pclksel 1. */
- clock_shift -= LPC176X_MODULE_BITS_COUNT;
- set_pclksel_value( LPC176X_SCB_PCLKSEL1, clock, clock_shift );
- }
-
- rtems_interrupt_enable( level );
- }
-
- /* else implies that the module has not clock. Also,
- there is nothing to do. */
-
- status_code = RTEMS_SUCCESSFUL;
- }
-
- /* else implies an invalid index number. Also, the function
- does not return successful. */
-
- return status_code;
-}
-
-/**
- * @brief Checks the usb module.
- *
- * @return RTEMS_SUCCESFUL if the usb module is correct.
- */
-static rtems_status_code check_usb_module( void )
-{
- rtems_status_code status_code = RTEMS_INCORRECT_STATE;
- const uint32_t pllclk = lpc176x_pllclk();
- const uint32_t usbclk = LPC176X_USB_CLOCK;
-
- if ( pllclk % usbclk == 0u ) {
- const uint32_t usbdiv = pllclk / usbclk;
-
- LPC176X_SCB.usbclksel = LPC176X_SCB_USBCLKSEL_USBDIV( usbdiv ) |
- LPC176X_SCB_USBCLKSEL_USBSEL( 1 );
- status_code = RTEMS_SUCCESSFUL;
- }
-
- /* else implies that the module has an incorrect pllclk or usbclk value.
- Also, there is nothing to do. */
-
- return status_code;
-}
-
-/**
- * @brief Enables the current module.
- *
- * @param module Current module to enable/disable.
- * @param clock The clock to set for this module.
- * @param enable TRUE if the module is enable.
- * @return RTEMS_SUCCESSFULL if the module was enabled successfully.
- */
-static rtems_status_code enable_disable_module(
- const lpc176x_module module,
- const lpc176x_module_clock clock,
- const bool enable
-)
-{
- rtems_status_code status_code;
- rtems_interrupt_level level = 0u;
-
- const bool has_power = lpc176x_module_table[ module ].power;
- const bool has_clock = lpc176x_module_table[ module ].clock;
- const unsigned index = lpc176x_module_table[ module ].index;
-
- assert( index <= LPC176X_MODULE_BITS_COUNT );
-
- /* Enable or disable module */
- if ( enable ) {
- status_code = check_power( has_power, index, true, level );
- RTEMS_CHECK_SC( status_code,
- "Checking index shift to turn on power of the module." );
-
- if ( module != LPC176X_MODULE_USB ) {
- status_code = check_clock( has_clock, index, clock, level );
- RTEMS_CHECK_SC( status_code,
- "Checking index shift to set pclksel to the current module." );
- } else {
- status_code = check_usb_module();
- RTEMS_CHECK_SC( status_code,
- "Checking pll clock to set usb clock to the current module." );
- }
- } else {
- status_code = check_power( has_power, index, false, level );
- RTEMS_CHECK_SC( status_code,
- "Checking index shift to turn off power of the module." );
- }
-
- return status_code;
-}
-
-/**
- * @brief Enables the module power and clock.
- *
- * @param module Device to enable.
- * @param clock The clock to set for this module.
- * @param enable Enable or disable the module.
- * @return RTEMS_SUCCESSFULL if the module was enabled succesfully.
- */
-static rtems_status_code lpc176x_module_do_enable(
- const lpc176x_module module,
- lpc176x_module_clock clock,
- const bool enable
-)
-{
- rtems_status_code status_code = RTEMS_SUCCESSFUL;
-
- if ( (unsigned) module >= LPC176X_MODULE_COUNT ) {
- return RTEMS_INVALID_ID;
- }
-
- /* else implies that the module has a correct value. Also,
- there is nothing to do. */
-
- if ( clock == LPC176X_MODULE_PCLK_DEFAULT ) {
-#if ( LPC176X_PCLKDIV == 1u )
- clock = LPC176X_MODULE_CCLK;
-#elif ( LPC176X_PCLKDIV == 2u )
- clock = LPC176X_MODULE_CCLK_2;
-#elif ( LPC176X_PCLKDIV == 4u )
- clock = LPC176X_MODULE_CCLK_4;
-#elif ( LPC176X_PCLKDIV == 8u )
- clock = LPC176X_MODULE_CCLK_8;
-#else
-#error "Unexpected clock divisor."
-#endif
- }
-
- /* else implies that the clock has a correct divisor. */
-
- if ( ( clock & ~LPC176X_MODULE_CLOCK_MASK ) == 0u ) {
- status_code = enable_disable_module( module, clock, enable );
- RTEMS_CHECK_SC( status_code, "Checking the module to enable/disable." );
- } else {
- status_code = RTEMS_INVALID_CLOCK;
- }
-
- return status_code;
-}
-
-inline rtems_status_code lpc176x_module_enable(
- const lpc176x_module module,
- lpc176x_module_clock clock
-)
-{
- return lpc176x_module_do_enable( module, clock, true );
-}
-
-inline rtems_status_code lpc176x_module_disable( const lpc176x_module module )
-{
- return lpc176x_module_do_enable( module,
- LPC176X_MODULE_PCLK_DEFAULT,
- false );
-}
-
-bool lpc176x_module_is_enabled( const lpc176x_module module )
-{
- assert( (unsigned) module < LPC176X_MODULE_COUNT );
-
- const bool has_power = lpc176x_module_table[ module ].power;
- bool enabled;
-
- if ( has_power ) {
- const unsigned index = lpc176x_module_table[ module ].index;
- const uint32_t pconp = LPC176X_SCB.pconp;
-
- enabled = ( pconp & ( 1u << index ) ) != 0u;
- } else {
- enabled = true;
- }
-
- return enabled;
-}
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