305 lines
7.3 KiB
C
305 lines
7.3 KiB
C
/* Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __ARCH_ARM_MACH_MSM_RPM_RESOURCES_H
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#define __ARCH_ARM_MACH_MSM_RPM_RESOURCES_H
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#include <mach/rpm.h>
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#include <linux/notifier.h>
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#include "pm.h"
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#include "test-lpm.h"
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enum {
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MSM_RPMRS_ID_PXO_CLK = 0,
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MSM_RPMRS_ID_L2_CACHE_CTL = 1,
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MSM_RPMRS_ID_VDD_DIG_0 = 2,
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MSM_RPMRS_ID_VDD_DIG_1 = 3,
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MSM_RPMRS_ID_VDD_MEM_0 = 4,
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MSM_RPMRS_ID_VDD_MEM_1 = 5,
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MSM_RPMRS_ID_RPM_CTL = 6,
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MSM_RPMRS_ID_LAST,
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};
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enum {
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MSM_RPMRS_PXO_OFF = 0,
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MSM_RPMRS_PXO_ON = 1,
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};
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enum {
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MSM_RPMRS_L2_CACHE_HSFS_OPEN = 0,
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MSM_RPMRS_L2_CACHE_GDHS = 1,
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MSM_RPMRS_L2_CACHE_RETENTION = 2,
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MSM_RPMRS_L2_CACHE_ACTIVE = 3,
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};
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enum {
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MSM_RPMRS_MASK_RPM_CTL_CPU_HALT = 1,
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MSM_RPMRS_MASK_RPM_CTL_MULTI_TIER = 2,
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};
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enum {
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MSM_RPMRS_VDD_MEM_RET_LOW = 0,
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MSM_RPMRS_VDD_MEM_RET_HIGH = 1,
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MSM_RPMRS_VDD_MEM_ACTIVE = 2,
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MSM_RPMRS_VDD_MEM_MAX = 3,
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MSM_RPMRS_VDD_MEM_LAST,
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};
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enum {
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MSM_RPMRS_VDD_DIG_RET_LOW = 0,
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MSM_RPMRS_VDD_DIG_RET_HIGH = 1,
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MSM_RPMRS_VDD_DIG_ACTIVE = 2,
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MSM_RPMRS_VDD_DIG_MAX = 3,
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MSM_RPMRS_VDD_DIG_LAST,
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};
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#define MSM_RPMRS_LIMITS(_pxo, _l2, _vdd_upper_b, _vdd) { \
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MSM_RPMRS_PXO_##_pxo, \
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MSM_RPMRS_L2_CACHE_##_l2, \
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MSM_RPMRS_VDD_MEM_##_vdd_upper_b, \
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MSM_RPMRS_VDD_MEM_##_vdd, \
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MSM_RPMRS_VDD_DIG_##_vdd_upper_b, \
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MSM_RPMRS_VDD_DIG_##_vdd, \
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{0}, {0}, \
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}
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struct msm_rpmrs_limits {
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uint32_t pxo;
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uint32_t l2_cache;
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uint32_t vdd_mem_upper_bound;
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uint32_t vdd_mem;
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uint32_t vdd_dig_upper_bound;
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uint32_t vdd_dig;
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uint32_t latency_us[NR_CPUS];
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uint32_t power[NR_CPUS];
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};
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struct msm_rpmrs_level {
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enum msm_pm_sleep_mode sleep_mode;
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struct msm_rpmrs_limits rs_limits;
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bool available;
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uint32_t latency_us;
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uint32_t steady_state_power;
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uint32_t energy_overhead;
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uint32_t time_overhead_us;
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};
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struct msm_rpmrs_platform_data {
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struct msm_rpmrs_level *levels;
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unsigned int num_levels;
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unsigned int vdd_mem_levels[MSM_RPMRS_VDD_MEM_LAST];
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unsigned int vdd_dig_levels[MSM_RPMRS_VDD_DIG_LAST];
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unsigned int vdd_mask;
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unsigned int rpmrs_target_id[MSM_RPMRS_ID_LAST];
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};
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enum {
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MSM_LPM_STATE_ENTER = 0,
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MSM_LPM_STATE_EXIT = 1,
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};
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/**
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* struct msm_lpm_sleep_data - abstraction to get sleep data
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* @limits: pointer to the msm_rpmrs_limits structure
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* @kernel_sleep: kernel sleep time as decided by the power calculation
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* algorithm
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*
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* This structure is an abstraction to get the limits and kernel sleep time
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* during enter sleep.
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*/
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struct msm_lpm_sleep_data {
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struct msm_rpmrs_limits *limits;
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uint32_t kernel_sleep;
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};
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#define MSM_PM(field) MSM_RPMRS_##field
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/**
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* msm_pm_get_pxo() - get the limits for pxo
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* @limits: pointer to the msm_rpmrs_limits structure
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*
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* This function gets the limits to the resource pxo on
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* 8960
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*/
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uint32_t msm_pm_get_pxo(struct msm_rpmrs_limits *limits);
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/**
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* msm_pm_get_l2_cache() - get the limits for l2 cache
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* @limits: pointer to the msm_rpmrs_limits structure
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*
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* This function gets the limits to the resource l2 cache
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* on 8960
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*/
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uint32_t msm_pm_get_l2_cache(struct msm_rpmrs_limits *limits);
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/**
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* msm_pm_get_vdd_mem() - get the limits for pxo
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* @limits: pointer to the msm_rpmrs_limits structure
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*
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* This function gets the limits to the resource vdd mem
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* on 8960
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*/
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uint32_t msm_pm_get_vdd_mem(struct msm_rpmrs_limits *limits);
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/**
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* msm_pm_get_vdd_dig() - get the limits for vdd dig
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* @limits: pointer to the msm_rpmrs_limits structure
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*
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* This function gets the limits to the resource vdd dig
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* on 8960
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*/
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uint32_t msm_pm_get_vdd_dig(struct msm_rpmrs_limits *limits);
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/**
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* msm_lpm_register_notifier() - register for notifications
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* @cpu: cpu to debug
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* @level_iter: low power level index to debug
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* @nb: notifier block to callback on notifications
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* @is_latency_measure: is it latency measure
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*
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* This function sets the permitted level to the index of the
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* level under test and registers notifier for callback.
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*/
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int msm_lpm_register_notifier(int cpu, int level_iter,
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struct notifier_block *nb, bool is_latency_measure);
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/**
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* msm_lpm_unregister_notifier() - unregister from notifications
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* @cpu: cpu to debug
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* @nb: notifier block to callback on notifications
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*
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* This function sets the permitted level to a value one more than
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* available levels count which indicates that all levels are
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* permitted and it also unregisters notifier for callback.
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*/
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int msm_lpm_unregister_notifier(int cpu, struct notifier_block *nb);
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#if defined(CONFIG_MSM_RPM)
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int msm_rpmrs_set(int ctx, struct msm_rpm_iv_pair *req, int count);
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int msm_rpmrs_set_noirq(int ctx, struct msm_rpm_iv_pair *req, int count);
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int msm_rpmrs_set_bits_noirq(int ctx, struct msm_rpm_iv_pair *req, int count,
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int *mask);
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static inline int msm_rpmrs_set_nosleep(
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int ctx, struct msm_rpm_iv_pair *req, int count)
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{
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unsigned long flags;
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int rc;
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local_irq_save(flags);
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rc = msm_rpmrs_set_noirq(ctx, req, count);
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local_irq_restore(flags);
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return rc;
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}
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int msm_rpmrs_clear(int ctx, struct msm_rpm_iv_pair *req, int count);
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int msm_rpmrs_clear_noirq(int ctx, struct msm_rpm_iv_pair *req, int count);
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static inline int msm_rpmrs_clear_nosleep(
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int ctx, struct msm_rpm_iv_pair *req, int count)
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{
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unsigned long flags;
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int rc;
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local_irq_save(flags);
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rc = msm_rpmrs_clear_noirq(ctx, req, count);
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local_irq_restore(flags);
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return rc;
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}
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void msm_rpmrs_show_resources(void);
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int msm_rpmrs_levels_init(struct msm_rpmrs_platform_data *data);
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#else
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static inline int msm_rpmrs_set(int ctx, struct msm_rpm_iv_pair *req,
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int count)
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{
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return -ENODEV;
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}
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static inline int msm_rpmrs_set_noirq(int ctx, struct msm_rpm_iv_pair *req,
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int count)
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{
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return -ENODEV;
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}
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static inline int msm_rpmrs_set_bits_noirq(int ctx, struct msm_rpm_iv_pair *req,
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int count, int *mask)
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{
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return -ENODEV;
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}
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static inline int msm_rpmrs_set_nosleep(
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int ctx, struct msm_rpm_iv_pair *req, int count)
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{
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return -ENODEV;
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}
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static inline int msm_rpmrs_clear(int ctx, struct msm_rpm_iv_pair *req,
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int count)
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{
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return -ENODEV;
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}
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static inline int msm_rpmrs_clear_noirq(int ctx, struct msm_rpm_iv_pair *req,
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int count)
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{
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return -ENODEV;
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}
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static inline int msm_rpmrs_clear_nosleep(
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int ctx, struct msm_rpm_iv_pair *req, int count)
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{
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return -ENODEV;
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}
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static inline struct msm_rpmrs_limits *msm_rpmrs_lowest_limits(
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bool from_idle, enum msm_pm_sleep_mode sleep_mode, uint32_t latency_us,
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uint32_t sleep_us)
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{
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return NULL;
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}
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static inline int msm_rpmrs_enter_sleep(uint32_t sclk_count,
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struct msm_rpmrs_limits *limits, bool from_idle, bool notify_rpm)
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{
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return -ENODEV;
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}
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static inline void msm_rpmrs_exit_sleep(struct msm_rpmrs_limits *limits,
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bool from_idle, bool notify_rpm, bool collapsed)
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{
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return;
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}
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static inline int msm_rpmrs_levels_init(struct msm_rpmrs_platform_data *data)
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{
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return -ENODEV;
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}
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#endif /* CONFIG_MSM_RPM */
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#endif /* __ARCH_ARM_MACH_MSM_RPM_RESOURCES_H */
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