arm: msm: add cpu frequency controls

This adds acpuclock-arm11.c from Google. This provides control
over the cpu frequency for arm11 cpu's.

This has shared authorship between Google, and Qualcomm. Most
of it was written by Mike Chan at Google.
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>

arch/arm/mach-msm/Makefile

@@ -2,6 +2,7 @@ obj-y += io.o idle.o irq.o timer.o dma.o
 obj-y += devices.o
 obj-y += proc_comm.o
 obj-y += vreg.o
+obj-y += acpuclock-arm11.o
 obj-y += clock.o clock-7x01a.o
 
 obj-$(CONFIG_MACH_HALIBUT) += board-halibut.o

arch/arm/mach-msm/acpuclock.h

+/* arch/arm/mach-msm/acpuclock.h
+ *
+ * MSM architecture clock driver header
+ *
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (c) 2007 QUALCOMM Incorporated
+ * Author: San Mehat <san@android.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __ARCH_ARM_MACH_MSM_ACPUCLOCK_H
+#define __ARCH_ARM_MACH_MSM_ACPUCLOCK_H
+
+int acpuclk_set_rate(unsigned long rate, int for_power_collapse);
+unsigned long acpuclk_get_rate(void);
+uint32_t acpuclk_get_switch_time(void);
+unsigned long acpuclk_wait_for_irq(void);
+unsigned long acpuclk_power_collapse(void);
+unsigned long acpuclk_get_wfi_rate(void);
+
+
+#endif
+

arch/arm/mach-msm/include/mach/board.h

@@ -27,6 +27,16 @@ struct msm_mddi_platform_data
 	unsigned has_vsync_irq:1;
 };
 
+struct msm_acpu_clock_platform_data
+{
+	uint32_t acpu_switch_time_us;
+	uint32_t max_speed_delta_khz;
+	uint32_t vdd_switch_time_us;
+	unsigned long power_collapse_khz;
+	unsigned long wait_for_irq_khz;
+};
+
+  
 /* common init routines for use by arch/arm/mach-msm/board-*.c */
 
 void __init msm_add_devices(void);
@@ -34,5 +44,6 @@ void __init msm_map_common_io(void);
 void __init msm_init_irq(void);
 void __init msm_init_gpio(void);
 void __init msm_clock_init(void);
+void __init msm_acpu_clock_init(struct msm_acpu_clock_platform_data *);
 
 #endif