patch-2.3.9 linux/arch/mips/jazz/kbd-jazz.c

• Lines: 103
• Date: Fri Jun 25 17:40:12 1999
• Orig file: v2.3.8/linux/arch/mips/jazz/kbd-jazz.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.8/linux/arch/mips/jazz/kbd-jazz.c linux/arch/mips/jazz/kbd-jazz.c
@@ -0,0 +1,102 @@
+/* $Id: kbd-jazz.c,v 1.1 1998/10/28 12:38:10 ralf Exp $
+ *
+ * Low-level hardware access stuff for Jazz family machines.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1995, 1996, 1997, 1998 by Ralf Baechle
+ */
+#include <linux/sched.h>
+#include <linux/pc_keyb.h>
+#include <asm/keyboard.h>
+#include <asm/jazz.h>
+
+#define jazz_kh ((keyboard_hardware *) JAZZ_KEYBOARD_ADDRESS)
+
+static void jazz_request_region(void)
+{
+	/* No I/O ports are being used on Jazz.  */
+}
+
+static int jazz_request_irq(void (*handler)(int, void *, struct pt_regs *))
+{
+	int res;
+
+	res = request_irq(JAZZ_KEYBOARD_IRQ, handler, 0, "keyboard", NULL);
+	if (res != 0)
+		return res;
+
+	/* jazz_request_irq() should do this ...  */
+	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
+	                  r4030_read_reg16(JAZZ_IO_IRQ_ENABLE)
+	                  | JAZZ_IE_KEYBOARD);
+
+	return 0;
+}
+
+static int jazz_aux_request_irq(void (*handler)(int, void *, struct pt_regs *))
+{
+	int ret;
+    
+	ret = request_irq(JAZZ_MOUSE_IRQ, handler, 0, "PS/2 Mouse", NULL);
+	if (ret != 0)
+		return ret;
+
+		r4030_write_reg16(JAZZ_IO_IRQ_ENABLE, 
+				  r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) | 
+				  JAZZ_IE_MOUSE);
+	return 0;
+}
+
+static void jazz_aux_free_irq(void)
+{
+	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE, 
+	                  r4030_read_reg16(JAZZ_IO_IRQ_ENABLE)
+	                  | JAZZ_IE_MOUSE);
+	free_irq(JAZZ_MOUSE_IRQ, NULL);
+}
+
+static unsigned char jazz_read_input(void)
+{
+	return jazz_kh->data;
+}
+
+static void jazz_write_output(unsigned char val)
+{
+	int status;
+
+	do {
+		status = jazz_kh->command;
+	} while (status & KBD_STAT_IBF);
+	jazz_kh->data = val;
+}
+
+static void jazz_write_command(unsigned char val)
+{
+	int status;
+
+	do {
+		status = jazz_kh->command;
+	} while (status & KBD_STAT_IBF);
+	jazz_kh->command = val;
+}
+
+static unsigned char jazz_read_status(void)
+{
+	return jazz_kh->command;
+}
+
+struct kbd_ops jazz_kbd_ops = {
+	jazz_request_region,
+	jazz_request_irq,
+
+	jazz_aux_request_irq,
+	jazz_aux_free_irq,
+
+	jazz_read_input,
+	jazz_write_output,
+	jazz_write_command,
+	jazz_read_status
+};