Changeset 797ab95 in mainline

Timestamp:

2025-03-07T22:35:36Z (4 weeks ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

master

Children:

0ae9e18

Parents:

b9cc81c6

Message:

Implement quiesce in i8042.

Location:

uspace/drv/char/i8042

Files:

• i8042.c (modified) (2 diffs)
• i8042.h (modified) (2 diffs)
• main.c (modified) (2 diffs)

uspace/drv/char/i8042/i8042.c

@@ -1 +1 @@
 /*
+ * Copyright (c) 2025 Jiri Svoboda
  * Copyright (c) 2001-2004 Jakub Jermar
  * Copyright (c) 2006 Josef Cejka
- * Copyright (c) 2021 Jiri Svoboda
  * Copyright (c) 2011 Jan Vesely
  * All rights reserved.
@@ -346 +346 @@
 }
 
+/** Quiesce i8042.
+ *
+ * @param dev i8042 instance.
+ */
+void i8042_quiesce(i8042_t *dev)
+{
+        /* Disable port interrupts. */
+        wait_ready(dev);
+        pio_write_8(&dev->regs->status, i8042_CMD_WRITE_CMDB);
+        wait_ready(dev);
+        pio_write_8(&dev->regs->data, i8042_KBD_TRANSLATE);
+}
+
 /** Write data to i8042 port.
  *

uspace/drv/char/i8042/i8042.h

@@ -1 +1 @@
 /*
- * Copyright (c) 2024 Jiri Svoboda
+ * Copyright (c) 2025 Jiri Svoboda
  * Copyright (c) 2006 Josef Cejka
  * Copyright (c) 2011 Jan Vesely
@@ -95 +95 @@
 
 extern errno_t i8042_init(i8042_t *, addr_range_t *, int, int, ddf_dev_t *);
+extern void i8042_quiesce(i8042_t *);
 
 #endif

uspace/drv/char/i8042/main.c

@@ -1 +1 @@
 /*
+ * Copyright (c) 2025 Jiri Svoboda
  * Copyright (c) 2011 Jan Vesely
  * All rights reserved.
@@ -135 +136 @@
 }
 
+/** Initialize a new ddf driver instance of i8042 driver
+ *
+ * @param[in] device DDF instance of the device to initialize.
+ *
+ * @return Error code.
+ *
+ */
+static errno_t i8042_dev_quiesce(ddf_dev_t *device)
+{
+        i8042_t *i8042;
+
+        ddf_msg(LVL_DEBUG, "i8042_dev_quiesce()");
+
+        i8042 = (i8042_t *)ddf_dev_data_get(device);
+        i8042_quiesce(i8042);
+        return EOK;
+}
+
 /** DDF driver operations. */
 static driver_ops_t i8042_driver_ops = {
         .dev_add = i8042_dev_add,
+        .dev_quiesce = i8042_dev_quiesce
 };