bsp/atsam: Add SC16IS752 support

1 files changed, 67 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/arm/atsam/include/sc16is752.h b/c/src/lib/libbsp/arm/atsam/include/sc16is752.h
new file mode 100644
index 0000000000..31f96609f6
--- /dev/null
+++ b/c/src/lib/libbsp/arm/atsam/include/sc16is752.h
@@ -0,0 +1,67 @@
+/*
+ * 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 1, not 0).
+ * @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 */