diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/lpc24xx/misc/io.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/lpc24xx/misc/io.c | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/c/src/lib/libbsp/arm/lpc24xx/misc/io.c b/c/src/lib/libbsp/arm/lpc24xx/misc/io.c deleted file mode 100644 index c28b5182f0..0000000000 --- a/c/src/lib/libbsp/arm/lpc24xx/misc/io.c +++ /dev/null @@ -1,570 +0,0 @@ -/** - * @file - * - * @ingroup lpc24xx_io - * - * @brief Input and output module. - */ - -/* - * Copyright (c) 2009-2012 embedded brains GmbH. All rights reserved. - * - * embedded brains GmbH - * Obere Lagerstr. 30 - * 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 <bsp.h> -#include <bsp/io.h> -#include <bsp/start.h> -#include <bsp/system-clocks.h> - -#define LPC24XX_PIN_SELECT(index) ((index) >> 4U) - -#define LPC24XX_PIN_SELECT_SHIFT(index) (((index) & 0xfU) << 1U) - -#define LPC24XX_PIN_SELECT_MASK 0x3U - -rtems_status_code lpc24xx_gpio_config( - unsigned index, - lpc24xx_gpio_settings settings -) -{ - if (index <= LPC24XX_IO_INDEX_MAX) { - rtems_interrupt_level level; - uint32_t port = LPC24XX_IO_PORT(index); - uint32_t port_bit = LPC24XX_IO_PORT_BIT(index); - uint32_t output = (settings & LPC24XX_GPIO_OUTPUT) != 0 ? 1U : 0U; - uint32_t resistor = settings & 0x3U; - #ifdef ARM_MULTILIB_ARCH_V4 - uint32_t select = LPC24XX_PIN_SELECT(index); - uint32_t shift = LPC24XX_PIN_SELECT_SHIFT(index); - - /* Get resistor flags */ - switch (resistor) { - case LPC24XX_GPIO_RESISTOR_PULL_UP: - resistor = 0x0U; - break; - case LPC24XX_GPIO_RESISTOR_NONE: - resistor = 0x2U; - break; - case LPC24XX_GPIO_RESISTOR_PULL_DOWN: - resistor = 0x3U; - break; - default: - return RTEMS_INVALID_NUMBER; - } - #else - uint32_t iocon_mask = IOCON_HYS | IOCON_INV - | IOCON_SLEW | IOCON_OD | IOCON_FILTER; - uint32_t iocon = (settings & iocon_mask) | IOCON_ADMODE; - uint32_t iocon_invalid = settings & ~(iocon_mask | LPC24XX_GPIO_OUTPUT); - - /* Get resistor flags */ - switch (resistor) { - case LPC24XX_GPIO_RESISTOR_NONE: - resistor = IOCON_MODE(0); - break; - case LPC24XX_GPIO_RESISTOR_PULL_DOWN: - resistor = IOCON_MODE(1); - break; - case LPC24XX_GPIO_RESISTOR_PULL_UP: - resistor = IOCON_MODE(2); - break; - case LPC17XX_GPIO_HYSTERESIS: - resistor = IOCON_MODE(3); - break; - } - iocon |= resistor; - - if (iocon_invalid != 0) { - return RTEMS_INVALID_NUMBER; - } - - if (output && (settings & LPC17XX_GPIO_INPUT_INVERT) != 0) { - return RTEMS_INVALID_NUMBER; - } - - if ((settings & LPC17XX_GPIO_INPUT_FILTER) == 0) { - iocon |= IOCON_FILTER; - } else { - iocon &= ~IOCON_FILTER; - } - #endif - - rtems_interrupt_disable(level); - - #ifdef ARM_MULTILIB_ARCH_V4 - /* Resistor */ - LPC24XX_PINMODE [select] = - (LPC24XX_PINMODE [select] & ~(LPC24XX_PIN_SELECT_MASK << shift)) - | ((resistor & LPC24XX_PIN_SELECT_MASK) << shift); - #else - LPC17XX_IOCON [index] = iocon; - #endif - - rtems_interrupt_flash(level); - - /* Input or output */ - LPC24XX_FIO [port].dir = - (LPC24XX_FIO [port].dir & ~(1U << port_bit)) | (output << port_bit); - - rtems_interrupt_enable(level); - } else { - return RTEMS_INVALID_ID; - } - - return RTEMS_SUCCESSFUL; -} - -#define LPC24XX_MODULE_ENTRY(mod, pwr, clk, idx) \ - [mod] = { \ - .power = pwr, \ - .clock = clk, \ - .index = idx \ - } - -typedef struct { - unsigned char power : 1; - unsigned char clock : 1; - unsigned char index : 6; -} lpc24xx_module_entry; - -static const lpc24xx_module_entry lpc24xx_module_table [] = { - #ifdef ARM_MULTILIB_ARCH_V4 - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_ACF, 0, 1, 15), - #endif - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_ADC, 1, 1, 12), - #ifdef ARM_MULTILIB_ARCH_V4 - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_BAT_RAM, 0, 1, 16), - #endif - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_CAN_0, 1, 1, 13), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_CAN_1, 1, 1, 14), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_DAC, 0, 1, 11), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_EMC, 1, 0, 11), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_ETHERNET, 1, 0, 30), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_GPDMA, 1, 1, 29), - #ifdef ARM_MULTILIB_ARCH_V4 - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_GPIO, 0, 1, 17), - #else - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_GPIO, 0, 1, 15), - #endif - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_I2C_0, 1, 1, 7), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_I2C_1, 1, 1, 19), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_I2C_2, 1, 1, 26), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_I2S, 1, 1, 27), - #ifdef ARM_MULTILIB_ARCH_V4 - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_LCD, 1, 0, 20), - #else - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_LCD, 1, 0, 0), - #endif - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_MCI, 1, 1, 28), - #ifdef ARM_MULTILIB_ARCH_V7M - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_MCPWM, 1, 1, 17), - #endif - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_PCB, 0, 1, 18), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_PWM_0, 1, 1, 5), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_PWM_1, 1, 1, 6), - #ifdef ARM_MULTILIB_ARCH_V7M - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_QEI, 1, 1, 18), - #endif - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_RTC, 1, 1, 9), - #ifdef ARM_MULTILIB_ARCH_V4 - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_SPI, 1, 1, 8), - #endif - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_SSP_0, 1, 1, 21), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_SSP_1, 1, 1, 10), - #ifdef ARM_MULTILIB_ARCH_V7M - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_SSP_2, 1, 1, 20), - #endif - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_SYSCON, 0, 1, 30), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_TIMER_0, 1, 1, 1), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_TIMER_1, 1, 1, 2), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_TIMER_2, 1, 1, 22), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_TIMER_3, 1, 1, 23), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_UART_0, 1, 1, 3), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_UART_1, 1, 1, 4), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_UART_2, 1, 1, 24), - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_UART_3, 1, 1, 25), - #ifdef ARM_MULTILIB_ARCH_V7M - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_UART_4, 1, 1, 8), - #endif - #ifdef ARM_MULTILIB_ARCH_V4 - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_WDT, 0, 1, 0), - #endif - LPC24XX_MODULE_ENTRY(LPC24XX_MODULE_USB, 1, 0, 31) -}; - -static rtems_status_code lpc24xx_module_do_enable( - lpc24xx_module module, - lpc24xx_module_clock clock, - bool enable -) -{ - rtems_interrupt_level level; - bool has_power = false; - bool has_clock = false; - unsigned index = 0; - #ifdef ARM_MULTILIB_ARCH_V7M - volatile lpc17xx_scb *scb = &LPC17XX_SCB; - #endif - - if ((unsigned) module >= LPC24XX_MODULE_COUNT) { - return RTEMS_INVALID_ID; - } - - #ifdef ARM_MULTILIB_ARCH_V4 - if (clock == LPC24XX_MODULE_PCLK_DEFAULT) { - #if LPC24XX_PCLKDIV == 1U - clock = LPC24XX_MODULE_CCLK; - #elif LPC24XX_PCLKDIV == 2U - clock = LPC24XX_MODULE_CCLK_2; - #elif LPC24XX_PCLKDIV == 4U - clock = LPC24XX_MODULE_CCLK_4; - #elif LPC24XX_PCLKDIV == 8U - clock = LPC24XX_MODULE_CCLK_8; - #endif - } - - if ((clock & ~LPC24XX_MODULE_CLOCK_MASK) != 0U) { - return RTEMS_INVALID_CLOCK; - } - #else - if (clock != LPC24XX_MODULE_PCLK_DEFAULT) { - return RTEMS_INVALID_CLOCK; - } - #endif - - has_power = lpc24xx_module_table [module].power; - has_clock = lpc24xx_module_table [module].clock; - index = lpc24xx_module_table [module].index; - - /* Enable or disable module */ - if (enable) { - if (has_power) { - rtems_interrupt_disable(level); - #ifdef ARM_MULTILIB_ARCH_V4 - PCONP |= 1U << index; - #else - scb->pconp |= 1U << index; - #endif - rtems_interrupt_enable(level); - } - - if (module != LPC24XX_MODULE_USB) { - if (has_clock) { - #ifdef ARM_MULTILIB_ARCH_V4 - unsigned clock_shift = 2U * index; - - rtems_interrupt_disable(level); - if (clock_shift < 32U) { - PCLKSEL0 = (PCLKSEL0 & ~(LPC24XX_MODULE_CLOCK_MASK << clock_shift)) - | (clock << clock_shift); - } else { - clock_shift -= 32U; - PCLKSEL1 = (PCLKSEL1 & ~(LPC24XX_MODULE_CLOCK_MASK << clock_shift)) - | (clock << clock_shift); - } - rtems_interrupt_enable(level); - #endif - } - } else { - #ifdef ARM_MULTILIB_ARCH_V4 - unsigned pllclk = lpc24xx_pllclk(); - unsigned usbsel = pllclk / 48000000U - 1U; - - if ( - usbsel > 15U - || (usbsel % 2U != 1U) - || (pllclk % 48000000U) != 0U - ) { - return RTEMS_INCORRECT_STATE; - } - - USBCLKCFG = usbsel; - #else - uint32_t pllclk = lpc24xx_pllclk(); - uint32_t usbclk = 48000000U; - - if (pllclk % usbclk == 0U) { - uint32_t usbdiv = pllclk / usbclk; - - scb->usbclksel = LPC17XX_SCB_USBCLKSEL_USBDIV(usbdiv) - | LPC17XX_SCB_USBCLKSEL_USBSEL(1); - } else { - return RTEMS_INCORRECT_STATE; - } - #endif - } - } else { - if (has_power) { - rtems_interrupt_disable(level); - #ifdef ARM_MULTILIB_ARCH_V4 - PCONP &= ~(1U << index); - #else - scb->pconp &= ~(1U << index); - #endif - rtems_interrupt_enable(level); - } - } - - return RTEMS_SUCCESSFUL; -} - -rtems_status_code lpc24xx_module_enable( - lpc24xx_module module, - lpc24xx_module_clock clock -) -{ - return lpc24xx_module_do_enable(module, clock, true); -} - -rtems_status_code lpc24xx_module_disable( - lpc24xx_module module -) -{ - return lpc24xx_module_do_enable( - module, - LPC24XX_MODULE_PCLK_DEFAULT, - false - ); -} - -bool lpc24xx_module_is_enabled(lpc24xx_module module) -{ - bool enabled = false; - - if ((unsigned) module < LPC24XX_MODULE_COUNT) { - bool has_power = lpc24xx_module_table [module].power; - - if (has_power) { - unsigned index = lpc24xx_module_table [module].index; - #ifdef ARM_MULTILIB_ARCH_V4 - uint32_t pconp = PCONP; - #else - uint32_t pconp = LPC17XX_SCB.pconp; - #endif - - enabled = (pconp & (1U << index)) != 0; - } else { - enabled = true; - } - } - - return enabled; -} - -typedef rtems_status_code (*lpc24xx_pin_visitor)( - #ifdef ARM_MULTILIB_ARCH_V4 - volatile uint32_t *pinsel, - uint32_t pinsel_mask, - uint32_t pinsel_value, - #else - volatile uint32_t *iocon, - lpc24xx_pin_range pin_range, - #endif - volatile uint32_t *fio_dir, - uint32_t fio_bit -); - -static BSP_START_TEXT_SECTION __attribute__((flatten)) rtems_status_code -lpc24xx_pin_set_function( - #ifdef ARM_MULTILIB_ARCH_V4 - volatile uint32_t *pinsel, - uint32_t pinsel_mask, - uint32_t pinsel_value, - #else - volatile uint32_t *iocon, - lpc24xx_pin_range pin_range, - #endif - volatile uint32_t *fio_dir, - uint32_t fio_bit -) -{ - #ifdef ARM_MULTILIB_ARCH_V4 - rtems_interrupt_level level; - - rtems_interrupt_disable(level); - *pinsel = (*pinsel & ~pinsel_mask) | pinsel_value; - rtems_interrupt_enable(level); - #else - uint32_t iocon_extra = 0; - uint32_t iocon_not_analog = IOCON_ADMODE; - - /* TODO */ - switch (pin_range.fields.type) { - case LPC17XX_PIN_TYPE_ADC: - case LPC17XX_PIN_TYPE_DAC: - iocon_not_analog = 0; - break; - case LPC17XX_PIN_TYPE_I2C_FAST_PLUS: - iocon_extra |= IOCON_HS; - break; - case LPC17XX_PIN_TYPE_OPEN_DRAIN: - iocon_extra |= IOCON_OD; - break; - default: - break; - } - - *iocon = IOCON_FUNC(pin_range.fields.function) | iocon_extra | iocon_not_analog; - #endif - - return RTEMS_SUCCESSFUL; -} - -static BSP_START_TEXT_SECTION rtems_status_code lpc24xx_pin_check_function( - #ifdef ARM_MULTILIB_ARCH_V4 - volatile uint32_t *pinsel, - uint32_t pinsel_mask, - uint32_t pinsel_value, - #else - volatile uint32_t *iocon, - lpc24xx_pin_range pin_range, - #endif - volatile uint32_t *fio_dir, - uint32_t fio_bit -) -{ - #ifdef ARM_MULTILIB_ARCH_V4 - if ((*pinsel & pinsel_mask) == pinsel_value) { - return RTEMS_SUCCESSFUL; - } else { - return RTEMS_IO_ERROR; - } - #else - /* TODO */ - return RTEMS_IO_ERROR; - #endif -} - -static BSP_START_TEXT_SECTION __attribute__((flatten)) rtems_status_code -lpc24xx_pin_set_input( - #ifdef ARM_MULTILIB_ARCH_V4 - volatile uint32_t *pinsel, - uint32_t pinsel_mask, - uint32_t pinsel_value, - #else - volatile uint32_t *iocon, - lpc24xx_pin_range pin_range, - #endif - volatile uint32_t *fio_dir, - uint32_t fio_bit -) -{ - rtems_interrupt_level level; - - rtems_interrupt_disable(level); - *fio_dir &= ~fio_bit; - #ifdef ARM_MULTILIB_ARCH_V4 - *pinsel &= ~pinsel_mask; - #else - *iocon = IOCON_MODE(2) | IOCON_ADMODE | IOCON_FILTER; - #endif - rtems_interrupt_enable(level); - - return RTEMS_SUCCESSFUL; -} - -static BSP_START_TEXT_SECTION rtems_status_code lpc24xx_pin_check_input( - #ifdef ARM_MULTILIB_ARCH_V4 - volatile uint32_t *pinsel, - uint32_t pinsel_mask, - uint32_t pinsel_value, - #else - volatile uint32_t *iocon, - lpc24xx_pin_range pin_range, - #endif - volatile uint32_t *fio_dir, - uint32_t fio_bit -) -{ - rtems_status_code sc = RTEMS_IO_ERROR; - bool is_input = (*fio_dir & fio_bit) == 0; - - if (is_input) { - #ifdef ARM_MULTILIB_ARCH_V4 - bool is_gpio = (*pinsel & pinsel_mask) == 0; - #else - bool is_gpio = IOCON_FUNC_GET(*iocon) == 0; - #endif - - if (is_gpio) { - sc = RTEMS_SUCCESSFUL; - } - } - - return sc; -} - -static BSP_START_DATA_SECTION const lpc24xx_pin_visitor - lpc24xx_pin_visitors [] = { - [LPC24XX_PIN_SET_FUNCTION] = lpc24xx_pin_set_function, - [LPC24XX_PIN_CHECK_FUNCTION] = lpc24xx_pin_check_function, - [LPC24XX_PIN_SET_INPUT] = lpc24xx_pin_set_input, - [LPC24XX_PIN_CHECK_INPUT] = lpc24xx_pin_check_input -}; - -BSP_START_TEXT_SECTION rtems_status_code lpc24xx_pin_config( - const lpc24xx_pin_range *pins, - lpc24xx_pin_action action -) -{ - rtems_status_code sc = RTEMS_SUCCESSFUL; - - if ((unsigned) action <= LPC24XX_PIN_CHECK_INPUT) { - lpc24xx_pin_visitor visitor = lpc24xx_pin_visitors [action]; - lpc24xx_pin_range terminal = LPC24XX_PIN_TERMINAL; - lpc24xx_pin_range pin_range = *pins; - uint32_t previous_port_bit = pin_range.fields.port_bit; - - while (sc == RTEMS_SUCCESSFUL && pin_range.value != terminal.value) { - uint32_t port = pin_range.fields.port; - uint32_t port_bit = pin_range.fields.port_bit; - uint32_t port_bit_last = port_bit; - uint32_t range = pin_range.fields.range; - #ifdef ARM_MULTILIB_ARCH_V4 - uint32_t function = pin_range.fields.function; - #endif - volatile uint32_t *fio_dir = &LPC24XX_FIO [port].dir; - - if (range) { - port_bit = previous_port_bit; - } - - while (sc == RTEMS_SUCCESSFUL && port_bit <= port_bit_last) { - uint32_t index = LPC24XX_IO_INDEX_BY_PORT(port, port_bit); - uint32_t fio_bit = 1U << port_bit; - #ifdef ARM_MULTILIB_ARCH_V4 - uint32_t select = LPC24XX_PIN_SELECT(index); - uint32_t shift = LPC24XX_PIN_SELECT_SHIFT(index); - volatile uint32_t *pinsel = &LPC24XX_PINSEL [select]; - uint32_t pinsel_mask = LPC24XX_PIN_SELECT_MASK << shift; - uint32_t pinsel_value = (function & LPC24XX_PIN_SELECT_MASK) << shift; - - sc = (*visitor)(pinsel, pinsel_mask, pinsel_value, fio_dir, fio_bit); - #else - volatile uint32_t *iocon = &LPC17XX_IOCON [index]; - - sc = (*visitor)(iocon, pin_range, fio_dir, fio_bit); - #endif - - ++port_bit; - } - - ++pins; - previous_port_bit = port_bit; - pin_range = *pins; - } - } else { - sc = RTEMS_NOT_DEFINED; - } - - return sc; -} |