MPU/CORE latency and Power domain latency modeling

Index: linux-omap-2.6/arch/arm/mach-omap2/resource34xx.h
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+/*
+ * linux/arch/arm/mach-omap2/resource34xx.h
+ *
+ * OMAP3 resource definitions
+ *
+ * Copyright (C) 2007-2008 Texas Instruments, Inc.
+ * Written by Rajendra Nayak <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * History:
+ *
+ */
+
+#ifndef __ARCH_ARM_MACH_OMAP2_RESOURCE_H
+#define __ARCH_ARM_MACH_OMAP2_RESOURCE_H
+
+#include <asm/arch/resource.h>
+#include <asm/arch/powerdomain.h>
+
+/**
+ * mpu_latency/core_latency are used to control the cpuidle C state.
+ */
+void init_latency(struct shared_resource *resp);
+int set_latency(struct shared_resource *resp, u32 target_level);
+
+static u8 mpu_qos_req_added;
+static u8 core_qos_req_added;
+
+static struct shared_resource_ops lat_res_ops = {
+	.init 		= init_latency,
+	.change_level   = set_latency,
+};
+
+static struct shared_resource mpu_latency = {
+	.name 		= "mpu_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+	.resource_data  = &mpu_qos_req_added,
+	.ops 		= &lat_res_ops,
+};
+
+static struct shared_resource core_latency = {
+	.name 		= "core_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+	.resource_data	= &core_qos_req_added,
+	.ops 		= &lat_res_ops,
+};
+
+/**
+ * Power domain Latencies are used to control the target Power
+ * domain state once all clocks for the power domain
+ * are released.
+ */
+void init_pd_latency(struct shared_resource *resp);
+int set_pd_latency(struct shared_resource *resp, u32 target_level);
+
+/* Power Domain Latency levels */
+#define PD_LATENCY_OFF		0x0
+#define PD_LATENCY_RET		0x1
+#define PD_LATENCY_INACT	0x2
+#define PD_LATENCY_ON		0x3
+
+#define PD_LATENCY_MAXLEVEL 	0x4
+
+struct pd_latency_db {
+	char *pwrdm_name;
+	struct powerdomain *pd;
+	/* Latencies for each state transition, stored in us */
+	unsigned long latency[PD_LATENCY_MAXLEVEL];
+};
+
+static struct shared_resource_ops pd_lat_res_ops = {
+	.init		= init_pd_latency,
+	.change_level 	= set_pd_latency,
+};
+
+static struct pd_latency_db iva2_pwrdm_lat_db = {
+	.pwrdm_name = "iva2_pwrdm",
+	.latency[PD_LATENCY_OFF] = 1000,
+	.latency[PD_LATENCY_RET] = 100,
+	.latency[PD_LATENCY_INACT] = 0,
+	.latency[PD_LATENCY_ON] = 0
+};
+
+static struct shared_resource iva2_pwrdm_latency = {
+	.name		= "iva2_pwrdm_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+	.resource_data	= &iva2_pwrdm_lat_db,
+	.ops		= &pd_lat_res_ops,
+};
+
+static struct pd_latency_db gfx_pwrdm_lat_db = {
+	.pwrdm_name = "gfx_pwrdm",
+	.latency[PD_LATENCY_OFF] = 1000,
+	.latency[PD_LATENCY_RET] = 100,
+	.latency[PD_LATENCY_INACT] = 0,
+	.latency[PD_LATENCY_ON]	 = 0
+};
+
+static struct shared_resource gfx_pwrdm_latency = {
+	.name		= "gfx_pwrdm_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430ES1),
+	.resource_data	= &gfx_pwrdm_lat_db,
+	.ops		= &pd_lat_res_ops,
+};
+
+static struct shared_resource sgx_pwrdm_latency = {
+	.name 		= "sgx_pwrdm_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430ES2),
+	.resource_data  = &gfx_pwrdm_lat_db,
+	.ops		= &pd_lat_res_ops,
+};
+
+static struct pd_latency_db dss_pwrdm_lat_db = {
+	.pwrdm_name = "dss_pwrdm",
+	.latency[PD_LATENCY_OFF] = 70,
+	.latency[PD_LATENCY_RET] = 20,
+	.latency[PD_LATENCY_INACT] = 0,
+	.latency[PD_LATENCY_ON]	 = 0
+};
+
+static struct shared_resource dss_pwrdm_latency = {
+	.name		= "dss_pwrdm_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+	.resource_data	= &dss_pwrdm_lat_db,
+	.ops		= &pd_lat_res_ops,
+};
+
+static struct pd_latency_db cam_pwrdm_lat_db = {
+	.pwrdm_name = "cam_pwrdm",
+	.latency[PD_LATENCY_OFF] = 850,
+	.latency[PD_LATENCY_RET] = 35,
+	.latency[PD_LATENCY_INACT] = 0,
+	.latency[PD_LATENCY_ON]	 = 0
+};
+
+static struct shared_resource cam_pwrdm_latency = {
+	.name		= "cam_pwrdm_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+	.resource_data	= &cam_pwrdm_lat_db,
+	.ops		= &pd_lat_res_ops,
+};
+
+static struct pd_latency_db per_pwrdm_lat_db = {
+	.pwrdm_name = "per_pwrdm",
+	.latency[PD_LATENCY_OFF] = 200,
+	.latency[PD_LATENCY_RET] = 110,
+	.latency[PD_LATENCY_INACT] = 0,
+	.latency[PD_LATENCY_ON]	 = 0
+};
+
+static struct shared_resource per_pwrdm_latency = {
+	.name		= "per_pwrdm_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+	.resource_data	= &per_pwrdm_lat_db,
+	.ops		= &pd_lat_res_ops,
+};
+
+static struct pd_latency_db neon_pwrdm_lat_db = {
+	.pwrdm_name = "neon_pwrdm",
+	.latency[PD_LATENCY_OFF] = 1000,
+	.latency[PD_LATENCY_RET] = 100,
+	.latency[PD_LATENCY_INACT] = 0,
+	.latency[PD_LATENCY_ON]	 = 0
+};
+
+static struct shared_resource neon_pwrdm_latency = {
+	.name		= "neon_pwrdm_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+	.resource_data	= &neon_pwrdm_lat_db,
+	.ops		= &pd_lat_res_ops,
+};
+
+static struct pd_latency_db usbhost_pwrdm_lat_db = {
+	.pwrdm_name = "usbhost_pwrdm",
+	.latency[PD_LATENCY_OFF] = 1000,
+	.latency[PD_LATENCY_RET] = 100,
+	.latency[PD_LATENCY_INACT] = 0,
+	.latency[PD_LATENCY_ON]	 = 0
+};
+
+static struct shared_resource usbhost_pwrdm_latency = {
+	.name		= "usbhost_pwrdm_latency",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430ES2),
+	.resource_data  = &usbhost_pwrdm_lat_db,
+	.ops		= &pd_lat_res_ops,
+};
+
+static struct pd_latency_db emu_pwrdm_lat_db = {
+	.pwrdm_name = "emu_pwrdm",
+	.latency[PD_LATENCY_OFF] = 1000,
+	.latency[PD_LATENCY_RET] = 100,
+	.latency[PD_LATENCY_INACT] = 0,
+	.latency[PD_LATENCY_ON]  = 0
+};
+
+static struct shared_resource emu_pwrdm_latency = {
+	.name           = "emu_pwrdm",
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+	.resource_data  = &emu_pwrdm_lat_db,
+	.ops		= &pd_lat_res_ops,
+};
+
+static struct shared_resource *resources_omap[] __initdata = {
+	&mpu_latency,
+	&core_latency,
+	/* Power Domain Latency resources */
+	&iva2_pwrdm_latency,
+	&gfx_pwrdm_latency,
+	&sgx_pwrdm_latency,
+	&dss_pwrdm_latency,
+	&cam_pwrdm_latency,
+	&per_pwrdm_latency,
+	&neon_pwrdm_latency,
+	&usbhost_pwrdm_latency,
+	&emu_pwrdm_latency,
+	NULL
+};
+
+#endif /* __ARCH_ARM_MACH_OMAP2_RESOURCE_H */