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