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-rw-r--r--mpm/lib/spi/CMakeLists.txt8
-rw-r--r--mpm/lib/spi/mock_spi.cpp117
-rw-r--r--mpm/lib/spi/mock_spi.h10
-rw-r--r--mpm/lib/spi/spi_config.cpp37
-rw-r--r--mpm/lib/spi/spi_config.h44
-rw-r--r--mpm/lib/spi/spi_lock.cpp26
-rw-r--r--mpm/lib/spi/spi_lock.h25
-rw-r--r--mpm/lib/spi/spidev_iface.cpp155
8 files changed, 422 insertions, 0 deletions
diff --git a/mpm/lib/spi/CMakeLists.txt b/mpm/lib/spi/CMakeLists.txt
new file mode 100644
index 000000000..b84c0de73
--- /dev/null
+++ b/mpm/lib/spi/CMakeLists.txt
@@ -0,0 +1,8 @@
+SET(SPI_SOURCES
+ ${CMAKE_CURRENT_SOURCE_DIR}/spi_lock.cpp
+ ${CMAKE_CURRENT_SOURCE_DIR}/spi_config.cpp
+ ${CMAKE_CURRENT_SOURCE_DIR}/mock_spi.cpp
+ ${CMAKE_CURRENT_SOURCE_DIR}/spidev_iface.cpp
+)
+
+USRP_PERIPHS_ADD_OBJECT(spi ${SPI_SOURCES})
diff --git a/mpm/lib/spi/mock_spi.cpp b/mpm/lib/spi/mock_spi.cpp
new file mode 100644
index 000000000..2508de3ce
--- /dev/null
+++ b/mpm/lib/spi/mock_spi.cpp
@@ -0,0 +1,117 @@
+//
+// Copyright 2014 Ettus Research (National Instruments)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+
+/*
+#include <uhd/config.hpp>
+#include <uhd/exception.hpp>
+#include "n310_spi.h"
+
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/types.h>
+#include <linux/spi/spidev.h>
+
+
+class spidev_impl : public spi
+{
+public:
+
+ spidev_impl(const std::string &device)
+ : _mode(SPI_CPHA),
+ _speed(2000000),
+ _bits(8),
+ _delay(0)
+ {
+ int ret;
+ _fd = open(device.c_str(), O_RDWR);
+ if (_fd < 0)
+ throw uhd::runtime_error(str(boost::format("Could not open spidev device %s") % device));
+
+ ret = ioctl(_fd, SPI_IOC_WR_MODE, &_mode);
+ if (ret == -1)
+ throw uhd::runtime_error("Could not set spidev mode");
+
+ ret = ioctl(_fd, SPI_IOC_RD_MODE, &_mode);
+ if (ret == -1)
+ throw uhd::runtime_error("Could not get spidev mode");
+
+ ret = ioctl(_fd, SPI_IOC_WR_BITS_PER_WORD, &_bits);
+ if (ret == -1)
+ throw uhd::runtime_error("Could not set spidev bits per word");
+
+ ret = ioctl(_fd, SPI_IOC_RD_BITS_PER_WORD, &_bits);
+ if (ret == -1)
+ throw uhd::runtime_error("Could not get spidev bits per word");
+
+ ret = ioctl(_fd, SPI_IOC_WR_MAX_SPEED_HZ, &_speed);
+ if (ret == -1)
+ throw uhd::runtime_error("Could not set spidev max speed");
+
+ ret = ioctl(_fd, SPI_IOC_RD_MAX_SPEED_HZ, &_speed);
+ if (ret == -1)
+ throw uhd::runtime_error("Could not get spidev max speed");
+ }
+
+ virtual ~spidev_impl()
+ {
+ close(_fd);
+ }
+
+ uint32_t transact_spi(int, const uhd::spi_config_t &,
+ uint32_t data, size_t num_bits,
+ bool)
+ {
+ int ret(0);
+ struct spi_ioc_transfer tr;
+
+ uint8_t *tx_data = reinterpret_cast<uint8_t *>(&data);
+
+
+ UHD_ASSERT_THROW(num_bits == 24);
+ uint8_t tx[] = { tx_data[2], tx_data[1], tx_data[0] };
+
+ uint8_t rx[3];
+ tr.tx_buf = (unsigned long)&tx[0];
+ tr.rx_buf = (unsigned long)&rx[0];
+ tr.len = num_bits >> 3;
+ tr.bits_per_word = _bits;
+ tr.tx_nbits = 1;
+ tr.rx_nbits = 1;
+ tr.speed_hz = _speed;
+ tr.delay_usecs = _delay;
+
+ ret = ioctl(_fd, SPI_IOC_MESSAGE(1), &tr);
+ if (ret < 1)
+ throw uhd::runtime_error("Could not send spidev message");
+
+ return rx[2];
+ }
+
+private:
+ int _fd;
+ uint8_t _mode;
+ uint32_t _speed;
+ uint8_t _bits;
+ uint16_t _delay;
+
+};
+
+spi::sptr spi::make(const std::string &device)
+{
+ return spi::sptr(new spidev_impl(device));
+}
+*/ \ No newline at end of file
diff --git a/mpm/lib/spi/mock_spi.h b/mpm/lib/spi/mock_spi.h
new file mode 100644
index 000000000..c289faa16
--- /dev/null
+++ b/mpm/lib/spi/mock_spi.h
@@ -0,0 +1,10 @@
+#pragma once
+
+#include <uhd/types/serial.hpp>
+
+class mock_spi : public virtual uhd::spi_iface
+{
+public:
+ typedef boost::shared_ptr<spi> sptr;
+ static sptr make(const std::string &device);
+};
diff --git a/mpm/lib/spi/spi_config.cpp b/mpm/lib/spi/spi_config.cpp
new file mode 100644
index 000000000..69d6d9c2a
--- /dev/null
+++ b/mpm/lib/spi/spi_config.cpp
@@ -0,0 +1,37 @@
+#include "spi_config.h"
+
+
+spi_config_t::spi_config_t(const spi_hwd_settings_t hwd_settings, const spi_device_settings_t device_settings) :
+ full_settings({
+ _convert_to_adi_settings(hwd_settings.chip_select_index, device_settings),
+ hwd_settings })
+{
+
+}
+
+spiSettings_t spi_config_t::_convert_to_adi_settings(const uint8_t chip_select_index, const spi_device_settings_t device_settings)
+{
+ return {
+ chip_select_index,
+ device_settings.writeBitPolarity,
+ device_settings.longInstructionWord,
+ device_settings.MSBFirst,
+ device_settings.CPHA,
+ device_settings.CPOL,
+ device_settings.enSpiStreaming,
+ device_settings.autoIncAddrUp,
+ device_settings.fourWireMode,
+ device_settings.spiClkFreq_Hz,
+ };
+}
+
+const spiSettings_t* spi_config_t::get_spi_settings() const
+{
+ return &(full_settings.adi_settings);
+}
+
+const spi_full_settings_t* spi_config_t::recover_full_spi_settings(const spiSettings_t* settings)
+{
+ // TODO: make this better
+ return reinterpret_cast<const spi_full_settings_t*>(settings);
+}
diff --git a/mpm/lib/spi/spi_config.h b/mpm/lib/spi/spi_config.h
new file mode 100644
index 000000000..a29a9bc64
--- /dev/null
+++ b/mpm/lib/spi/spi_config.h
@@ -0,0 +1,44 @@
+#pragma once
+
+#include "../mykonos/adi/common.h"
+
+// contains information about the spi configuration
+
+struct spi_device_settings_t
+{
+ uint8_t writeBitPolarity;
+ uint8_t longInstructionWord; ///< 1 = 16bit instruction word, 0 = 8bit instruction word
+ uint8_t MSBFirst; ///< 1 = MSBFirst, 0 = LSBFirst
+ uint8_t CPHA; ///< clock phase, sets which clock edge the data updates (valid 0 or 1)
+ uint8_t CPOL; ///< clock polarity 0 = clock starts low, 1 = clock starts high
+ uint8_t enSpiStreaming; ///< Not implemented. SW feature to improve SPI throughput.
+ uint8_t autoIncAddrUp; ///< Not implemented. For SPI Streaming, set address increment direction. 1= next addr = addr+1, 0:addr = addr-1
+ uint8_t fourWireMode; ///< 1: Use 4-wire SPI, 0: 3-wire SPI (SDIO pin is bidirectional). NOTE: ADI's FPGA platform always uses 4-wire mode.
+ uint32_t spiClkFreq_Hz;
+};
+
+struct spi_hwd_settings_t
+{
+ uint8_t spidev_index;
+ uint8_t chip_select_index;
+};
+
+struct spi_full_settings_t
+{
+ spiSettings_t adi_settings;
+ spi_hwd_settings_t hwd_settings;
+};
+
+class spi_config_t
+{
+public:
+ spi_config_t(spi_hwd_settings_t hwd_settings, spi_device_settings_t device_settings);
+
+private:
+ const spi_full_settings_t full_settings;
+ static spiSettings_t _convert_to_adi_settings(uint8_t chip_select_index, spi_device_settings_t device_settings);
+
+public:
+ const spiSettings_t* get_spi_settings() const;
+ static const spi_full_settings_t* recover_full_spi_settings(const spiSettings_t* settings);
+};
diff --git a/mpm/lib/spi/spi_lock.cpp b/mpm/lib/spi/spi_lock.cpp
new file mode 100644
index 000000000..1796de46a
--- /dev/null
+++ b/mpm/lib/spi/spi_lock.cpp
@@ -0,0 +1,26 @@
+#include "spi_lock.h"
+
+spi_lock::spi_lock(uint8_t spidev_index) :
+ spidev_index(spidev_index)
+{
+
+}
+
+uint8_t spi_lock::get_spidev() const
+{
+ return spidev_index;
+}
+
+void spi_lock::lock()
+{
+ spi_mutex.lock();
+}
+void spi_lock::unlock()
+{
+ spi_mutex.unlock();
+}
+
+spi_lock::sptr spi_lock::make(uint8_t spidev_index)
+{
+ return std::make_shared<spi_lock>(spidev_index);
+} \ No newline at end of file
diff --git a/mpm/lib/spi/spi_lock.h b/mpm/lib/spi/spi_lock.h
new file mode 100644
index 000000000..55ddb0baf
--- /dev/null
+++ b/mpm/lib/spi/spi_lock.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <boost/noncopyable.hpp>
+#include <memory>
+#include <mutex>
+
+class spi_lock : public boost::noncopyable
+{
+public:
+ using sptr = std::shared_ptr<spi_lock>;
+ static sptr make(uint8_t spidev_index);
+
+ spi_lock(uint8_t spidev_index);
+
+ uint8_t get_spidev() const;
+
+private:
+ const uint8_t spidev_index;
+
+ // BasicLockable implementation for lock_guard
+ mutable std::mutex spi_mutex;
+ friend class std::lock_guard<spi_lock>;
+ void lock();
+ void unlock();
+}; \ No newline at end of file
diff --git a/mpm/lib/spi/spidev_iface.cpp b/mpm/lib/spi/spidev_iface.cpp
new file mode 100644
index 000000000..7108759f8
--- /dev/null
+++ b/mpm/lib/spi/spidev_iface.cpp
@@ -0,0 +1,155 @@
+//
+// Copyright 2017 Ettus Research (National Instruments)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include "mpm/spi/spidev_iface.hpp"
+
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/types.h>
+#include <linux/spi/spidev.h>
+#include <boost/format.hpp>
+
+using namespace mpm::spi;
+
+/******************************************************************************
+ * Implementation
+ *****************************************************************************/
+class spidev_iface_impl : public spidev_iface
+{
+public:
+
+ spidev_iface_impl(
+ const std::string &device
+ ) {
+ int ret;
+
+ _fd = open(device.c_str(), O_RDWR);
+ if (_fd < 0) {
+ throw std::runtime_error(str(
+ boost::format("Could not open spidev device %s")
+ % device
+ ));
+ }
+
+ ret = ioctl(_fd, SPI_IOC_WR_MODE32, &_mode);
+ if (ret == -1) {
+ throw std::runtime_error("Could not set spidev mode");
+ }
+
+ ret = ioctl(_fd, SPI_IOC_RD_MODE32, &_mode);
+ if (ret == -1) {
+ throw std::runtime_error("Could not get spidev mode");
+ }
+
+ ret = ioctl(_fd, SPI_IOC_WR_BITS_PER_WORD, &_bits);
+ if (ret == -1) {
+ throw std::runtime_error("Could not set spidev bits per word");
+ }
+
+ ret = ioctl(_fd, SPI_IOC_RD_BITS_PER_WORD, &_bits);
+ if (ret == -1) {
+ throw std::runtime_error("Could not get spidev bits per word");
+ }
+
+ ret = ioctl(_fd, SPI_IOC_WR_MAX_SPEED_HZ, &_speed);
+ if (ret == -1) {
+ throw std::runtime_error("Could not set spidev max speed");
+ }
+
+ ret = ioctl(_fd, SPI_IOC_RD_MAX_SPEED_HZ, &_speed);
+ if (ret == -1) {
+ throw std::runtime_error("Could not get spidev max speed");
+ }
+ }
+
+ ~spidev_iface_impl()
+ {
+ close(_fd);
+ }
+
+ uint32_t transact_spi(
+ int /* which_slave */,
+ const uhd::spi_config_t & /* config */,
+ uint32_t data,
+ size_t num_bits,
+ bool readback
+ ) {
+ int ret(0);
+
+ uint8_t *tx_data = reinterpret_cast<uint8_t *>(&data);
+
+ assert(num_bits == 24);
+ uint8_t tx[] = {tx_data[2], tx_data[1], tx_data[0]};
+
+ uint8_t rx[3]; // Buffer length must match tx buffer
+
+ struct spi_ioc_transfer tr;
+ tr.tx_buf = (unsigned long) &tx[0];
+ tr.rx_buf = (unsigned long) &rx[0];
+ tr.len = num_bits >> 3;
+ tr.bits_per_word = _bits;
+ tr.tx_nbits = 1; // Standard SPI
+ tr.rx_nbits = 1; // Standard SPI
+ tr.speed_hz = _speed;
+ tr.delay_usecs = _delay;
+
+ ret = ioctl(_fd, SPI_IOC_MESSAGE(1), &tr);
+ if (ret < 1)
+ throw std::runtime_error("Could not send spidev message");
+
+ return rx[2]; // Assumes that only a single byte is being read.
+ }
+
+ uint32_t read_spi(
+ int which_slave,
+ const uhd::spi_config_t &config,
+ uint32_t data,
+ size_t num_bits
+ ) {
+ return transact_spi(
+ which_slave, config, data, num_bits, true
+ );
+ }
+
+ void write_spi(
+ int which_slave,
+ const uhd::spi_config_t &config,
+ uint32_t data,
+ size_t num_bits
+ ) {
+ transact_spi(
+ which_slave, config, data, num_bits, false
+ );
+ }
+
+private:
+ int _fd;
+ uint8_t _mode = SPI_CPHA | SPI_CPOL;
+ uint32_t _speed = 2000000;
+ uint8_t _bits = 8;
+ uint16_t _delay = 0;
+};
+
+/******************************************************************************
+ * Factory
+ *****************************************************************************/
+spidev_iface::sptr spidev_iface::make(
+ const std::string &device
+) {
+ return sptr(new spidev_iface_impl(device));
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 14:57:43 +0000