diff options
Diffstat (limited to 'bsps/arm/atsam/include/bsp')
| -rw-r--r-- | bsps/arm/atsam/include/bsp/atsam-clock-config.h | 62 | ||||
| -rw-r--r-- | bsps/arm/atsam/include/bsp/atsam-i2c.h | 74 | ||||
| -rw-r--r-- | bsps/arm/atsam/include/bsp/atsam-spi.h | 36 | ||||
| -rw-r--r-- | bsps/arm/atsam/include/bsp/i2c.h | 36 | ||||
| -rw-r--r-- | bsps/arm/atsam/include/bsp/irq.h | 30 | ||||
| -rw-r--r-- | bsps/arm/atsam/include/bsp/pin-config.h | 36 | ||||
| -rw-r--r-- | bsps/arm/atsam/include/bsp/power.h | 245 | ||||
| -rw-r--r-- | bsps/arm/atsam/include/bsp/sc16is752.h | 68 | ||||
| -rw-r--r-- | bsps/arm/atsam/include/bsp/spi.h | 36 |
9 files changed, 623 insertions, 0 deletions
diff --git a/bsps/arm/atsam/include/bsp/atsam-clock-config.h b/bsps/arm/atsam/include/bsp/atsam-clock-config.h new file mode 100644 index 0000000000..396986894b --- /dev/null +++ b/bsps/arm/atsam/include/bsp/atsam-clock-config.h @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2017 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. + */ + +#ifndef ATSAM_CLOCK_CONFIG_H +#define ATSAM_CLOCK_CONFIG_H + +#include <rtems.h> +#include <bsp/linker-symbols.h> +#include <bspopts.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#if ATSAM_CHANGE_CLOCK_FROM_SRAM != 0 +/* Note: fast_text is the simplest section to put this code into. Other + * possibilities would include creating a new section. */ +#define ATSAM_START_SRAM_SECTION BSP_FAST_TEXT_SECTION +#else +#define ATSAM_START_SRAM_SECTION +#endif + +struct atsam_clock_config { + /* Initialization value for the PMC_PLLAR. */ + uint32_t pllar_init; + /* Initialization value for the PMC_MCKR. */ + uint32_t mckr_init; + /* Resulting frequency in Hz. */ + uint32_t mck_freq; +}; + +ATSAM_START_SRAM_SECTION +extern const struct atsam_clock_config atsam_clock_config; + +#define BOARD_MCK (atsam_clock_config.mck_freq) + +struct BOARD_Sdram_Config { + uint32_t sdramc_tr; + uint32_t sdramc_cr; + uint32_t sdramc_mdr; + uint32_t sdramc_cfr1; +}; + +ATSAM_START_SRAM_SECTION +extern const struct BOARD_Sdram_Config BOARD_Sdram_Config; + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* ATSAM_CLOCK_CONFIG_H */ diff --git a/bsps/arm/atsam/include/bsp/atsam-i2c.h b/bsps/arm/atsam/include/bsp/atsam-i2c.h new file mode 100644 index 0000000000..7425db9f7b --- /dev/null +++ b/bsps/arm/atsam/include/bsp/atsam-i2c.h @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2016 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <info@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. + */ + +#ifndef LIBBSP_ARM_ATSAM_ATSAM_I2C_H +#define LIBBSP_ARM_ATSAM_ATSAM_I2C_H + +#include <libchip/chip.h> +#include <libchip/include/pio.h> + +#include <bsp.h> +#include <dev/i2c/i2c.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define TWI_AMOUNT_PINS 2 + +typedef enum { + TX_SEND_DATA, + TX_SEND_STOP, + TX_CONT_MESSAGE_NEEDED, + RX_SEND_DATA, + RX_SEND_STOP, + RX_CONT_MESSAGE_NEEDED, + TX_RX_STOP_SENT +}transfer_state; + +typedef struct { + uint8_t status; + uint8_t *data; + bool stop_request; + uint32_t data_size; + uint32_t already_transferred; + transfer_state trans_state; +} transfer_desc; + +typedef struct { + i2c_bus base; + i2c_msg *msgs; + Twihs *regs; + transfer_desc trans_desc; + uint32_t msg_todo; + uint32_t current_msg_todo; + uint8_t *current_msg_byte; + uint32_t input_clock; + bool read; + rtems_id task_id; + rtems_vector_number irq; +} atsam_i2c_bus; + +int i2c_bus_register_atsam( + const char *bus_path, + Twihs *register_base, + rtems_vector_number irq, + const Pin pins[TWI_AMOUNT_PINS] +); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_ATSAM_ATSAM_I2C_H */ diff --git a/bsps/arm/atsam/include/bsp/atsam-spi.h b/bsps/arm/atsam/include/bsp/atsam-spi.h new file mode 100644 index 0000000000..548dd544f4 --- /dev/null +++ b/bsps/arm/atsam/include/bsp/atsam-spi.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2016 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <info@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. + */ + +#ifndef LIBBSP_ARM_ATSAM_ATSAM_SPI_H +#define LIBBSP_ARM_ATSAM_ATSAM_SPI_H + +#include <libchip/chip.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +int spi_bus_register_atsam( + const char *bus_path, + uint8_t spi_peripheral_id, + Spi *spi_regs, + const Pin *pins, + size_t pin_count +); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_ATSAM_ATSAM_SPI_H */ diff --git a/bsps/arm/atsam/include/bsp/i2c.h b/bsps/arm/atsam/include/bsp/i2c.h new file mode 100644 index 0000000000..1ea1204ff5 --- /dev/null +++ b/bsps/arm/atsam/include/bsp/i2c.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2016 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <info@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. + */ + +#ifndef LIBBSP_ARM_ATSAM_I2C_H +#define LIBBSP_ARM_ATSAM_I2C_H + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define ATSAM_I2C_0_BUS_PATH "/dev/i2c-0" +#define ATSAM_I2C_1_BUS_PATH "/dev/i2c-1" +#define ATSAM_I2C_2_BUS_PATH "/dev/i2c-2" + +int atsam_register_i2c_0(void); + +int atsam_register_i2c_1(void); + +int atsam_register_i2c_2(void); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_ATSAM_I2C_H */ diff --git a/bsps/arm/atsam/include/bsp/irq.h b/bsps/arm/atsam/include/bsp/irq.h new file mode 100644 index 0000000000..19370e4852 --- /dev/null +++ b/bsps/arm/atsam/include/bsp/irq.h @@ -0,0 +1,30 @@ +/* + * Copyright (c) 2016 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. + */ + +#ifndef LIBBSP_ARM_ATSAM_ESV_70_IRQ_H +#define LIBBSP_ARM_ATSAM_ESV_70_IRQ_H + +#include <bspopts.h> + +#ifndef ASM + #include <rtems.h> + #include <rtems/irq.h> + #include <rtems/irq-extension.h> +#endif + +#define BSP_INTERRUPT_VECTOR_MIN 0 + +#define BSP_INTERRUPT_VECTOR_MAX 64 + +#endif /* LIBBSP_ARM_ATSAM_ESV_70_IRQ_H */ diff --git a/bsps/arm/atsam/include/bsp/pin-config.h b/bsps/arm/atsam/include/bsp/pin-config.h new file mode 100644 index 0000000000..8f4a61428f --- /dev/null +++ b/bsps/arm/atsam/include/bsp/pin-config.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2016 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. + */ + +#ifndef LIBBSP_ARM_ATSAM_PIN_CONFIG_H +#define LIBBSP_ARM_ATSAM_PIN_CONFIG_H + +#include <libchip/chip.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +extern const Pin atsam_pin_config[]; + +extern const size_t atsam_pin_config_count; + +extern const uint32_t atsam_matrix_ccfg_sysio; + +/** @} */ + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_ATSAM_PIN_CONFIG_H */ diff --git a/bsps/arm/atsam/include/bsp/power.h b/bsps/arm/atsam/include/bsp/power.h new file mode 100644 index 0000000000..a352386a0e --- /dev/null +++ b/bsps/arm/atsam/include/bsp/power.h @@ -0,0 +1,245 @@ +/* + * Copyright (c) 2016 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. + */ + +#ifndef LIBBSP_ARM_ATSAM_POWER_H +#define LIBBSP_ARM_ATSAM_POWER_H + +#include <sys/types.h> + +#include <stdint.h> + +#ifdef __cplusplus +extern "C"{ +#endif /* __cplusplus */ + +/** + * @brief Status of the Low Power Support + */ +typedef enum { + /** + * @brief Used for Initialization of Handlers + */ + ATSAM_POWER_INIT, + /** + * @brief Used for Switching On of Handlers + */ + ATSAM_POWER_ON, + /** + * @brief Used for Switching Off of Handlers + */ + ATSAM_POWER_OFF +} atsam_power_state; + +/** + * @brief Control structure for power control handling + */ +typedef struct atsam_power_control { + /** + * @brief Data pointer to the handler with its desired state + */ + void (*handler)( + const struct atsam_power_control *control, + atsam_power_state state + ); + /** + * @brief Data chunk that is used by the handler + */ + union { + void *arg; + struct { + uint8_t first; + uint8_t last; + } peripherals; + } data; +} atsam_power_control; + +/** + * @brief Performs a power state change according to the state parameter. + * + * The handlers of the control table are invoked in forward order (invocation + * starts with table index zero) for the ATSAM_POWER_INIT and ATSAM_POWER_OFF + * states, otherwise the handlers are invoked in reverse order (invocation + * starts with the last table index). + * + * @param controls Table with power controls. + * @param n Count of power control table entries. + * @param state The desired power state. + * + * @code + * #include <rtems.h> + * #include <pthread.h> + * + * #include <bsp/power.h> + * + * static atsam_power_data_rtc_driver rtc_data = { .interval = 5 }; + * + * static const atsam_power_control power_controls[] = { + * ATSAM_POWER_CLOCK_DRIVER, + * ATSAM_POWER_RTC_DRIVER(&rtc_data), + * ATSAM_POWER_SLEEP_MODE + * }; + * + * static pthread_once_t once = PTHREAD_ONCE_INIT; + * + * static void init(void) + * { + * atsam_power_change_state( + * &power_controls[0], + * RTEMS_ARRAY_SIZE(power_controls), + * ATSAM_POWER_INIT + * ); + * } + * + * void power_init(void) + * { + * pthread_once(&once, init); + * } + * + * void low_power(void) + * { + * atsam_power_change_state( + * &power_controls[0], + * RTEMS_ARRAY_SIZE(power_controls), + * ATSAM_POWER_OFF + * ); + * atsam_power_change_state( + * &power_controls[0], + * RTEMS_ARRAY_SIZE(power_controls), + * ATSAM_POWER_ON + * ); + * } + * @end + */ +void atsam_power_change_state( + const atsam_power_control *controls, + size_t n, + atsam_power_state state +); + +/** + * @brief Power handler for a set of peripherals according to the specified + * peripheral indices. + * + * For the power off state, the peripherals are enabled in the PMC. + * + * For the power on state, the peripherals are disabled in the Power Management + * Controller (PMC). + * + * @see ATSAM_POWER_PERIPHERAL(). + */ +void atsam_power_handler_peripheral( + const atsam_power_control *controls, + atsam_power_state state +); + +/** + * @brief Power handler for the clock driver. + * + * For the power off state, the system tick is disabled. + * + * For the power on state, the system tick is enabled. In case no clock driver + * is used by the application, then this may lead to a spurious interrupt + * resulting in a fatal error. + * + * @see ATSAM_POWER_CLOCK_DRIVER(). + */ +void atsam_power_handler_clock_driver( + const atsam_power_control *controls, + atsam_power_state state +); + +/** + * @brief Power handler for the RTC driver. + * + * This handler installs an interrupt handler during power support initialization. + * + * For the power off state, the RTC alarm interrupt is set up according to the + * interval of the corresponding handler data. + * + * For the power on state, the RTC alarm interrupt is disabled. + * + * @see ATSAM_POWER_RTC_DRIVER(). + */ +void atsam_power_handler_rtc_driver( + const atsam_power_control *controls, + atsam_power_state state +); + +/** + * @brief Power handler to enter the processor sleep mode. + * + * For the power off state, the processor is set into the sleep mode and issues + * a wait for interrupt instruction. + * + * @see ATSAM_POWER_SLEEP_MODE(). + */ +void atsam_power_handler_sleep_mode( + const atsam_power_control *controls, + atsam_power_state state +); + +/** + * @brief Initializer for a peripheral power support. + * + * @param f The first peripheral index. + * @param l The last peripheral index. + */ +#define ATSAM_POWER_PERIPHERAL(f, l) \ + { \ + .handler = atsam_power_handler_peripheral, \ + .data = { .peripherals = { .first = f, .last = l } } \ + } + +#define ATSAM_POWER_HANDLER(h, a) \ + { \ + .handler = h, \ + .data = { .arg = a } \ + } + +#define ATSAM_POWER_CLOCK_DRIVER \ + { .handler = atsam_power_handler_clock_driver } + +#define ATSAM_POWER_SLEEP_MODE \ + { .handler = atsam_power_handler_sleep_mode } + +/** + * @brief Data for RTC driver power support. + * + * @see ATSAM_POWER_RTC_DRIVER(). + */ +typedef struct { + /** + * @brief Interval in seconds for which the power off mode should be active. + */ + uint8_t interval; +} atsam_power_data_rtc_driver; + +/** + * @brief Initializer for RTC driver power support. + * + * @param a Pointer to RTC driver power data. + * + * @see atsam_power_data_rtc_driver. + */ +#define ATSAM_POWER_RTC_DRIVER(a) \ + { \ + .handler = atsam_power_handler_rtc_driver, \ + .data = { .arg = a } \ + } + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_ATSAM_POWER_H */ diff --git a/bsps/arm/atsam/include/bsp/sc16is752.h b/bsps/arm/atsam/include/bsp/sc16is752.h new file mode 100644 index 0000000000..35d298a7ed --- /dev/null +++ b/bsps/arm/atsam/include/bsp/sc16is752.h @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2016 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <info@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. + */ + +#ifndef LIBBSP_ARM_ATSAM_SC16IS752_H +#define LIBBSP_ARM_ATSAM_SC16IS752_H + +#include <libchip/chip.h> + +#include <dev/serial/sc16is752.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +typedef struct { + sc16is752_spi_context base; + Pin irq_pin; +} atsam_sc16is752_spi_context; + +/** + * @brief Creates an SPI connected SC16IS752 device. + * + * This devices uses the interrupt server, see + * rtems_interrupt_server_initialize(). + * + * The device claims the interrupt of the PIO block. + * + * @param[in] ctx The device context. May have an arbitrary content. + * @param[in] device_path The device file path for the new device. + * @param[in] mode The SC16IS752 mode. + * @param[in] input_frequency The input frequency in Hertz of the SC16IS752 + * chip. See XTAL1 and XTAL2 pins. + * @param[in] spi_path The SPI bus device path. + * @param[in] spi_chip_select The SPI chip select (starts with 0, the SPI + * driver uses SPI_ChipSelect(1 << spi_chip_select)). + * @param[in] spi_speed_hz The SPI bus speed in Hertz. + * @param[in] irq_pin The interrupt pin, e.g. { PIO_PD28, PIOD, ID_PIOD, + * PIO_INPUT, PIO_IT_LOW_LEVEL }. + * + * @return See sc16is752_spi_create(). + */ +int atsam_sc16is752_spi_create( + atsam_sc16is752_spi_context *ctx, + const char *device_path, + sc16is752_mode mode, + uint32_t input_frequency, + const char *spi_path, + uint8_t spi_chip_select, + uint32_t spi_speed_hz, + const Pin *irq_pin +); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_ATSAM_SC16IS752_H */ diff --git a/bsps/arm/atsam/include/bsp/spi.h b/bsps/arm/atsam/include/bsp/spi.h new file mode 100644 index 0000000000..958e629ba3 --- /dev/null +++ b/bsps/arm/atsam/include/bsp/spi.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2016 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <info@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. + */ + +#ifndef LIBBSP_ARM_ATSAM_SPI_H +#define LIBBSP_ARM_ATSAM_SPI_H + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define ATSAM_SPI_0_BUS_PATH "/dev/spi-0" +#define ATSAM_SPI_1_BUS_PATH "/dev/spi-1" +#define ATSAM_SPI_2_BUS_PATH "/dev/spi-2" + +int atsam_register_spi_0(void); + +int atsam_register_spi_1(void); + +int atsam_register_spi_2(void); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_ATSAM_SPI_H */ |