dt_spi_host.c

Go to the documentation of this file.

// Copyright lowRISC contributors (OpenTitan project).
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
//
// Device table API auto-generated by `dtgen`
 
/**
 * @file
 * @brief Device Tables (DT) for IP spi_host and top englishbreakfast.
 */
 
#include "dt/dt_spi_host.h"
 
 
 
/**
 * Description of instances.
 */
typedef struct dt_desc_spi_host {
  dt_instance_id_t inst_id; /**< Instance ID */
  uint32_t base_addr[kDtSpiHostRegBlockCount]; /**< Base address of each register block */
  /**
   * PLIC ID of the first IRQ of this instance
   * 
   * This can be `kDtPlicIrqIdNone` if the block is not connected to the PLIC.
   */
  top_englishbreakfast_plic_irq_id_t first_irq;
  dt_clock_t clock[kDtSpiHostClockCount]; /**< Clock signal connected to each clock port */
  dt_reset_t reset[kDtSpiHostResetCount]; /**< Reset signal connected to each reset port */
  dt_periph_io_t periph_io[kDtSpiHostPeriphIoCount]; /**< Description of each peripheral I/O */
} dt_desc_spi_host_t;
 
 
 
 
static const dt_desc_spi_host_t spi_host_desc[kDtSpiHostCount] = {
  [kDtSpiHost0] = {
    .inst_id = kDtInstanceIdSpiHost0,
    .base_addr = {
      [kDtSpiHostRegBlockCore] = 0x40060000,
    },
    .first_irq = kTopEnglishbreakfastPlicIrqIdSpiHost0Error,
    .clock = {
      [kDtSpiHostClockClk] = kDtClockIo,
    },
    .reset = {
      [kDtSpiHostResetRst] = kDtResetSpiHost0,
    },
    .periph_io = {
      [kDtSpiHostPeriphIoSck] = {
        .__internal = {
          .type = kDtPeriphIoTypeDio,
          .dir = kDtPeriphIoDirOut,
          .periph_input_or_direct_pad = kTopEnglishbreakfastDirectPadsSpiHost0Sck,
          .outsel_or_dt_pad = kDtPadSpiHost0Sck,
        },
      },
      [kDtSpiHostPeriphIoCsb] = {
        .__internal = {
          .type = kDtPeriphIoTypeDio,
          .dir = kDtPeriphIoDirOut,
          .periph_input_or_direct_pad = kTopEnglishbreakfastDirectPadsSpiHost0Csb,
          .outsel_or_dt_pad = kDtPadSpiHost0Csb,
        },
      },
      [kDtSpiHostPeriphIoSd0] = {
        .__internal = {
          .type = kDtPeriphIoTypeDio,
          .dir = kDtPeriphIoDirInout,
          .periph_input_or_direct_pad = kTopEnglishbreakfastDirectPadsSpiHost0Sd0,
          .outsel_or_dt_pad = kDtPadSpiHost0Sd0,
        },
      },
      [kDtSpiHostPeriphIoSd1] = {
        .__internal = {
          .type = kDtPeriphIoTypeDio,
          .dir = kDtPeriphIoDirInout,
          .periph_input_or_direct_pad = kTopEnglishbreakfastDirectPadsSpiHost0Sd1,
          .outsel_or_dt_pad = kDtPadSpiHost0Sd1,
        },
      },
      [kDtSpiHostPeriphIoSd2] = {
        .__internal = {
          .type = kDtPeriphIoTypeDio,
          .dir = kDtPeriphIoDirInout,
          .periph_input_or_direct_pad = kTopEnglishbreakfastDirectPadsSpiHost0Sd2,
          .outsel_or_dt_pad = kDtPadSpiHost0Sd2,
        },
      },
      [kDtSpiHostPeriphIoSd3] = {
        .__internal = {
          .type = kDtPeriphIoTypeDio,
          .dir = kDtPeriphIoDirInout,
          .periph_input_or_direct_pad = kTopEnglishbreakfastDirectPadsSpiHost0Sd3,
          .outsel_or_dt_pad = kDtPadSpiHost0Sd3,
        },
      },
    },
  },
};
 
/**
 * Return a pointer to the `dt_spi_host_desc_t` structure of the requested
 * `dt` if it's a valid index. Otherwise, this macro will `return` (i.e. exit
 * the function) with the provided default value.
 */
#define TRY_GET_DT(dt, default)   ({     if ((dt) < (dt_spi_host_t)0 || (dt) >= kDtSpiHostCount)       return (default);     &spi_host_desc[dt];   })
 
dt_spi_host_t dt_spi_host_from_instance_id(dt_instance_id_t inst_id) {
  if (inst_id >= kDtInstanceIdSpiHost0 && inst_id <= kDtInstanceIdSpiHost0) {
    return (dt_spi_host_t)(inst_id - kDtInstanceIdSpiHost0);
  }
  return (dt_spi_host_t)0;
}
 
dt_instance_id_t dt_spi_host_instance_id(
    dt_spi_host_t dt) {
  return TRY_GET_DT(dt, kDtInstanceIdUnknown)->inst_id;
}
 
uint32_t dt_spi_host_reg_block(
    dt_spi_host_t dt,
    dt_spi_host_reg_block_t reg_block) {
  // Return a recognizable address in case of wrong argument.
  return TRY_GET_DT(dt, 0xdeadbeef)->base_addr[reg_block];
}
 
dt_plic_irq_id_t dt_spi_host_irq_to_plic_id(
    dt_spi_host_t dt,
    dt_spi_host_irq_t irq) {
  dt_plic_irq_id_t first_irq = TRY_GET_DT(dt, kDtPlicIrqIdNone)->first_irq;
  if (first_irq == kDtPlicIrqIdNone) {
    return kDtPlicIrqIdNone;
  }
  return (dt_plic_irq_id_t)((uint32_t)first_irq + (uint32_t)irq);
}
 
dt_spi_host_irq_t dt_spi_host_irq_from_plic_id(
    dt_spi_host_t dt,
    dt_plic_irq_id_t irq) {
  dt_spi_host_irq_t count = kDtSpiHostIrqCount;
  dt_plic_irq_id_t first_irq = TRY_GET_DT(dt, count)->first_irq;
  if (first_irq == kDtPlicIrqIdNone) {
    return count;
  }
  if (irq < first_irq || irq >= first_irq + (dt_plic_irq_id_t)count) {
    return count;
  }
  return (dt_spi_host_irq_t)(irq - first_irq);
}
 
 
 
dt_periph_io_t dt_spi_host_periph_io(
    dt_spi_host_t dt,
    dt_spi_host_periph_io_t sig) {
  // Return a harmless value in case of wrong argument.
  return TRY_GET_DT(dt, kDtPeriphIoConstantHighZ)->periph_io[sig];
}
 
dt_clock_t dt_spi_host_clock(
    dt_spi_host_t dt,
    dt_spi_host_clock_t clk) {
  // Return the first clock in case of invalid argument.
  return TRY_GET_DT(dt, (dt_clock_t)0)->clock[clk];
}
 
dt_reset_t dt_spi_host_reset(
    dt_spi_host_t dt,
    dt_spi_host_reset_t rst) {
  const dt_spi_host_reset_t count = kDtSpiHostResetCount;
  if (rst >= count) {
    return kDtResetUnknown;
  }
  return TRY_GET_DT(dt, kDtResetUnknown)->reset[rst];
}