patch-2.4.20 linux-2.4.20/arch/mips/vr41xx/common/cmu.c

• Lines: 85
• Date: Thu Nov 28 15:53:10 2002
• Orig file: linux-2.4.19/arch/mips/vr41xx/common/cmu.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/arch/mips/vr41xx/common/cmu.c linux-2.4.20/arch/mips/vr41xx/common/cmu.c
@@ -0,0 +1,84 @@
+/*
+ * FILE NAME
+ *	arch/mips/vr41xx/common/cmu.c
+ *
+ * BRIEF MODULE DESCRIPTION
+ *	Clock Mask Unit routines for the NEC VR4100 series.
+ *
+ * Author: Yoichi Yuasa
+ *         yyuasa@mvista.com or source@mvista.com
+ *
+ * Copyright 2001,2002 MontaVista Software Inc.
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by the
+ *  Free Software Foundation; either version 2 of the License, or (at your
+ *  option) any later version.
+ *
+ *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Changes:
+ *  MontaVista Software Inc. <yyuasa@mvista.com> or <source@mvista.com>
+ *  - Added support for NEC VR4111 and VR4121.
+ *
+ *  MontaVista Software Inc. <yyuasa@mvista.com> or <source@mvista.com>
+ *  - New creation, NEC VR4122 and VR4131 are supported.
+ */
+#include <linux/init.h>
+#include <linux/types.h>
+
+#include <asm/cpu.h>
+#include <asm/io.h>
+
+#define VR4111_CMUCLKMSK	KSEG1ADDR(0x0b000060)
+#define VR4122_CMUCLKMSK	KSEG1ADDR(0x0f000060)
+
+static u32 vr41xx_cmu_base;
+static u16 cmuclkmsk;
+
+#define write_cmu(mask)	writew((mask), vr41xx_cmu_base)
+
+void vr41xx_clock_supply(u16 mask)
+{
+	cmuclkmsk |= mask;
+	write_cmu(cmuclkmsk);
+}
+
+void vr41xx_clock_mask(u16 mask)
+{
+	cmuclkmsk &= ~mask;
+	write_cmu(cmuclkmsk);
+}
+
+void __init vr41xx_cmu_init(u16 mask)
+{
+	switch (mips_cpu.cputype) {
+        case CPU_VR4111:
+        case CPU_VR4121:
+                vr41xx_cmu_base = VR4111_CMUCLKMSK;
+                break;
+        case CPU_VR4122:
+        case CPU_VR4131:
+                vr41xx_cmu_base = VR4122_CMUCLKMSK;
+                break;
+	default:
+		panic("Unexpected CPU of NEC VR4100 series");
+		break;
+        }
+
+	cmuclkmsk = mask;
+}