drivers/reset: support rpmsg reset

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>

drivers/drivers_initialize.c

@@ -39,6 +39,7 @@
 #include <nuttx/pci/pci.h>
 #include <nuttx/power/pm.h>
 #include <nuttx/power/regulator.h>
+#include <nuttx/reset/reset-controller.h>
 #include <nuttx/segger/rtt.h>
 #include <nuttx/sensors/sensor.h>
 #include <nuttx/serial/pty.h>
@@ -154,6 +155,10 @@ void drivers_initialize(void)
   regulator_rpmsg_server_init();
 #endif
 
+#if defined(CONFIG_RESET_RPMSG)
+  reset_rpmsg_server_init();
+#endif
+
   /* Initialize the serial device driver */
 
 #ifdef CONFIG_RPMSG_UART

drivers/reset/Kconfig

@@ -8,3 +8,10 @@ menuconfig RESET
 	default n
 	---help---
 		This selection enables building of the "upper-half" reset driver.
+
+config RESET_RPMSG
+	bool "Reset rpmsg driver support"
+	depends on RESET && RPTUN
+	default n
+	---help---
+		This selection enables rpmsg support for reset.

drivers/reset/Make.defs

@@ -24,6 +24,12 @@ ifeq ($(CONFIG_RESET),y)
 
 CSRCS += core.c
 
+ifeq ($(CONFIG_RESET_RPMSG),y)
+
+CSRCS += reset_rpmsg.c
+
+endif
+
 DEPPATH += --dep-path reset
 VPATH += :reset
 CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)drivers$(DELIM)reset

drivers/reset/core.c

@@ -251,6 +251,7 @@ reset_control_get_internal(FAR struct reset_controller_dev *rcdev,
                            unsigned int index, bool shared, bool acquired)
 {
   FAR struct reset_control *rstc;
+  int ret;
 
   DEBUGASSERT(nxmutex_is_locked(&g_reset_list_mutex));
 
@@ -288,6 +289,21 @@ reset_control_get_internal(FAR struct reset_controller_dev *rcdev,
       return NULL;
     }
 
+#if defined(CONFIG_RESET_RPMSG)
+
+  /* Only client defines this function */
+
+  if (rcdev->ops->acquire)
+    {
+      ret = rcdev->ops->acquire(rcdev, index, shared, acquired);
+      if (ret < 0)
+        {
+          kmm_free(rstc);
+          return NULL;
+        }
+    }
+#endif
+
   rstc->rcdev = rcdev;
   list_add_after(&rcdev->reset_control_head, &rstc->list);
   rstc->id = index;
@@ -317,6 +333,17 @@ static void reset_control_put_internal(FAR struct reset_control *rstc)
     {
       DEBUGASSERT(nxmutex_is_locked(&g_reset_list_mutex));
       list_delete(&rstc->list);
+
+#if defined(CONFIG_RESET_RPMSG)
+
+      /* Only client defines this function */
+
+      if (rstc->rcdev->ops->release)
+        {
+          rstc->rcdev->ops->release(rstc->rcdev, rstc->id);
+        }
+#endif
+
       kmm_free(rstc);
     }
 }
@@ -378,6 +405,14 @@ reset_controller_get_by_name(FAR const char *name)
   }
 
   nxmutex_unlock(&g_reset_list_mutex);
+
+#if defined(CONFIG_RESET_RPMSG)
+  if (strchr(name, '/'))
+    {
+      return reset_rpmsg_get(name);
+    }
+#endif
+
   return NULL;
 }
 

include/nuttx/reset/reset-controller.h

@@ -25,6 +25,8 @@
  * Included Files
  ****************************************************************************/
 
+#include <nuttx/config.h>
+
 #include <nuttx/list.h>
 #include <nuttx/compiler.h>
 
@@ -44,13 +46,18 @@ struct reset_controller_dev;
 
 struct reset_control_ops
 {
-  CODE int (*reset)(FAR struct reset_controller_dev *rcdev, unsigned int id);
+  CODE int (*acquire)(FAR struct reset_controller_dev *rcdev,
+                      unsigned int id, bool shared, bool acquired);
+  CODE int (*release)(FAR struct reset_controller_dev *rcdev,
+                      unsigned int id);
+  CODE int (*reset)(FAR struct reset_controller_dev *rcdev,
+                    unsigned int id);
   CODE int (*assert)(FAR struct reset_controller_dev *rcdev,
                      unsigned int id);
   CODE int (*deassert)(FAR struct reset_controller_dev *rcdev,
                        unsigned int id);
   CODE int (*status)(FAR struct reset_controller_dev *rcdev,
-                       unsigned long id);
+                     unsigned int id);
 };
 
 /* struct reset_controller_dev - reset controller entity that might
@@ -73,6 +80,39 @@ struct reset_controller_dev
  * Public Functions Definitions
  ****************************************************************************/
 
+#ifdef CONFIG_RESET_RPMSG
+
+/****************************************************************************
+ * Name: reset_rpmsg_get
+ *
+ * Description:
+ *
+ * Input Parameters:
+ *
+ *   name - the name of the remote reset controller
+ *
+ * Returned Value:
+ *
+ *   Reset controller pointer
+ *
+ ****************************************************************************/
+
+FAR struct reset_controller_dev *reset_rpmsg_get(FAR const char *name);
+
+/****************************************************************************
+ * Name: reset_rpmsg_server_init
+ *
+ * Description:
+ * Server side rpmsg initialization
+ *
+ * Returned Value:
+ *   Returns 0 if success.
+ ****************************************************************************/
+
+int reset_rpmsg_server_init(void);
+
+#endif
+
 /****************************************************************************
  * Name: reset_controller_register()
  *