Publish LumaOps source

2026-09-03 01:18:36 +02:00
commit 7f1c0e5f71
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+/*---------------------------------------------------------*\
+| i2c_smbus.h                                               |
+|                                                           |
+|   Device-independent i2c/SMBus communication functions    |
+|                                                           |
+|   Adam Honse (CalcProgrammer1)                08 Aug 2018 |
+|   Portions based on Linux source code                     |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-or-later               |
+\*---------------------------------------------------------*/
+
+#ifndef I2C_SMBUS_H
+#define I2C_SMBUS_H
+
+#include <atomic>
+#include <thread>
+#include <condition_variable>
+#include <mutex>
+
+typedef unsigned char   u8;
+typedef unsigned short  u16;
+typedef unsigned int    u32;
+typedef int             s32;
+
+#ifdef _WIN32
+
+//Data for SMBus Messages
+#define I2C_SMBUS_BLOCK_MAX     32
+
+union i2c_smbus_data
+{
+    u8          byte;
+    u16         word;
+    u8          block[I2C_SMBUS_BLOCK_MAX + 2];
+};
+
+#endif /* _WIN32 */
+
+#ifdef __linux__
+
+#include <linux/i2c.h>
+
+#endif  /* __linux__ */
+
+#if defined(__APPLE__) || defined(__FreeBSD__)
+
+//Data for SMBus Messages
+#define I2C_SMBUS_BLOCK_MAX     32
+
+union i2c_smbus_data
+{
+    u8          byte;
+    u16         word;
+    u8          block[I2C_SMBUS_BLOCK_MAX + 2];
+};
+
+#endif /* __APPLE__ or __FreeBSD__ */
+
+// i2c_smbus_xfer read or write markers
+#define I2C_SMBUS_READ  1
+#define I2C_SMBUS_WRITE 0
+
+// SMBus transaction types (size parameter in the above functions)
+#define I2C_SMBUS_QUICK             0
+#define I2C_SMBUS_BYTE              1
+#define I2C_SMBUS_BYTE_DATA         2
+#define I2C_SMBUS_WORD_DATA         3
+#define I2C_SMBUS_PROC_CALL         4
+#define I2C_SMBUS_BLOCK_DATA        5
+#define I2C_SMBUS_I2C_BLOCK_BROKEN  6
+#define I2C_SMBUS_BLOCK_PROC_CALL   7           /* SMBus 2.0 */
+#define I2C_SMBUS_I2C_BLOCK_DATA    8
+
+
+class i2c_smbus_interface
+{
+public:
+    char device_name[512];
+
+    int port_id;
+    int pci_device;
+    int pci_vendor;
+    int pci_subsystem_device;
+    int pci_subsystem_vendor;
+
+    int bus_id;
+
+    i2c_smbus_interface();
+    virtual ~i2c_smbus_interface();
+
+    //Functions derived from i2c-core.c
+    s32 i2c_smbus_write_quick(u8 addr, u8 value);
+    s32 i2c_smbus_read_byte(u8 addr);
+    s32 i2c_smbus_write_byte(u8 addr, u8 value);
+    s32 i2c_smbus_read_byte_data(u8 addr, u8 command);
+    s32 i2c_smbus_write_byte_data(u8 addr, u8 command, u8 value);
+    s32 i2c_smbus_read_word_data(u8 addr, u8 command);
+	s32 i2c_smbus_write_word_data(u8 addr, u8 command, u16 value);
+    s32 i2c_smbus_read_block_data(u8 addr, u8 command, u8 *values);
+	s32 i2c_smbus_write_block_data(u8 addr, u8 command, u8 length, const u8 *values);
+    s32 i2c_smbus_read_i2c_block_data(u8 addr, u8 command, u8 length, u8 *values);
+    s32 i2c_smbus_write_i2c_block_data(u8 addr, u8 command, u8 length, const u8 *values);
+
+    //Addtional functions added for pure I2C block operations
+    s32 i2c_read_block(u8 addr, int* size, u8* data);
+    s32 i2c_write_block(u8 addr, int size, u8* data);
+
+    //Handle SMBus and I2C transfer calls in a single thread
+    s32 i2c_smbus_xfer_call(u8 addr, char read_write, u8 command, int size, i2c_smbus_data* data);
+    s32 i2c_xfer_call(u8 addr, char read_write, int* size, u8 *data);
+
+    virtual s32 i2c_smbus_xfer(u8 addr, char read_write, u8 command, int size, i2c_smbus_data* data) = 0;
+    virtual s32 i2c_xfer(u8 addr, char read_write, int* size, u8* data) = 0;
+
+private:
+    std::mutex              i2c_smbus_xfer_mutex;
+
+};
+
+#endif /* I2C_SMBUS_H */