[DM/FEATURE] DM Device IDA management

Drivers can manage their own IDs without having to concern themselves with the register/unregister in system Link: https://github.com/RT-Thread/rt-thread/issues/9534 Signed-off-by: GuEe-GUI <2991707448@qq.com>
2026-09-22 03:09:16 +08:00 · 2024-11-18 14:23:25 +08:00
parent 45aba1bcd7
commit 3b22dbd049
4 changed files with 247 additions and 0 deletions
@@ -13,6 +13,7 @@

 #include <rthw.h>
 #include <rtdef.h>
+#include <bitmap.h>
 #include <ioremap.h>
 #include <drivers/misc.h>
 #include <drivers/byteorder.h>
@@ -27,6 +28,24 @@ extern int rt_hw_cpu_id(void);

 void rt_dm_secondary_cpu_init(void);

+/* ID Allocation */
+struct rt_dm_ida
+{
+    rt_uint8_t master_id;
+
+#define RT_DM_IDA_NUM 256
+    RT_BITMAP_DECLARE(map, RT_DM_IDA_NUM);
+    struct rt_spinlock lock;
+};
+
+#define RT_DM_IDA_INIT(id)  { .master_id = MASTER_ID_##id }
+
+int rt_dm_ida_alloc(struct rt_dm_ida *ida);
+rt_bool_t rt_dm_ida_take(struct rt_dm_ida *ida, int id);
+void rt_dm_ida_free(struct rt_dm_ida *ida, int id);
+
+rt_device_t rt_dm_device_find(int master_id, int device_id);
+
 int rt_dm_dev_set_name_auto(rt_device_t dev, const char *prefix);
 int rt_dm_dev_get_name_id(rt_device_t dev);

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-04-20     GuEe-GUI     the first version
+ */
+
+#ifndef __RT_DM_MASTER_ID_H__
+#define __RT_DM_MASTER_ID_H__
+
+#define MASTER_ID_CUSTOM                                0
+
+/* Block */
+#define MASTER_ID_NVME                                  1
+#define MASTER_ID_SCSI_SD                               2
+#define MASTER_ID_SCSI_CDROM                            3
+#define MASTER_ID_SDIO                                  4
+#define MASTER_ID_VIRTUAL_BLOCK                         5
+
+/* Char */
+#define MASTER_ID_RPMSG_EPT                             11
+#define MASTER_ID_RPMSG_CHAR                            12
+#define MASTER_ID_SERIAL                                13
+
+/* Clock Timer */
+#define MASTER_ID_HWTIMER                               21
+#define MASTER_ID_PTP                                   22
+#define MASTER_ID_RTC                                   23
+
+/* Graphic Display */
+#define MASTER_ID_GRAPHIC_BACKLIGHT                     31
+#define MASTER_ID_GRAPHIC_FRAMEBUFFER                   32
+#define MASTER_ID_LED                                   33
+
+/* Hardware Monitor */
+#define MASTER_ID_DVFS                                  41
+#define MASTER_ID_SENSOR                                42
+#define MASTER_ID_THERMAL                               43
+#define MASTER_ID_WATCHDOG                              44
+
+/* I2C */
+#define MASTER_ID_I2C_BUS                               51
+#define MASTER_ID_I2C_DEV                               52
+
+/* IO Contorl */
+#define MASTER_ID_ADC                                   61
+#define MASTER_ID_DAC                                   62
+#define MASTER_ID_PIN                                   63
+#define MASTER_ID_PWM                                   64
+
+/* Memory */
+#define MASTER_ID_MEM                                   71
+#define MASTER_ID_MTD                                   72
+
+/* MISC */
+#define MASTER_ID_MISC                                  81
+
+/* Multimedia */
+#define MASTER_ID_AUDIO                                 91
+
+/* Net */
+#define MASTER_ID_CAN                                   101
+#define MASTER_ID_ETH                                   102
+#define MASTER_ID_PHY                                   103
+#define MASTER_ID_WLAN                                  104
+
+/* Input */
+#define MASTER_ID_INPUT                                 111
+#define MASTER_ID_TOUCH                                 112
+
+/* Security */
+#define MASTER_ID_HWCRYPTO                              121
+#define MASTER_ID_RNG                                   122
+#define MASTER_ID_TEE                                   123
+
+/* SPI */
+#define MASTER_ID_SPI_BUS                               131
+#define MASTER_ID_SPI_DEV                               132
+
+/* TTY */
+#define MASTER_ID_TTY                                   141
+#define MASTER_ID_TTY_SLAVES                            142
+#define MASTER_ID_TTY_ALTERNATE                        	143
+#define MASTER_ID_PTMX                                  144
+
+/* USB */
+#define MASTER_ID_USB_DEV                               151
+#define MASTER_ID_USB_BUS                               152
+#define MASTER_ID_USB_OTG                               153
+
+#endif /* __RT_DM_MASTER_ID_H__ */