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android_kernel_google_msm/include/linux/msm_thermal.h

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msm: thermal: Simplify kernel thermal safeguard mechanism Using CPUFreq policy objects and setting the max frequency limit by overriding the policy->max node, leads to race/overwrite conditions with an user trying to use the scaling_max_frequency node. The thermal limits are directly communicated to the 'msm' cpufreq driver and use the cpufreq_update_policy() to ensure that the frequency is limited as per the thermal safeguard requirements. CRs-fixed: 370343 Change-Id: Iab5a15e0f0d25da4b9f6a9417dbfc01bf5d6f8f6 Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
2012-05-25 23:36:07 +00:00
/*
Update copyright to The Linux Foundation Change-Id: Ibead64ce2e901dede2ddd1b86088b88f2350ce92 Signed-off-by: Duy Truong <dtruong@codeaurora.org>
2013-02-12 21:35:08 +00:00
* Copyright (c) 2012, The Linux Foundation. All rights reserved.
msm: thermal: Simplify kernel thermal safeguard mechanism Using CPUFreq policy objects and setting the max frequency limit by overriding the policy->max node, leads to race/overwrite conditions with an user trying to use the scaling_max_frequency node. The thermal limits are directly communicated to the 'msm' cpufreq driver and use the cpufreq_update_policy() to ensure that the frequency is limited as per the thermal safeguard requirements. CRs-fixed: 370343 Change-Id: Iab5a15e0f0d25da4b9f6a9417dbfc01bf5d6f8f6 Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
2012-05-25 23:36:07 +00:00
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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 __MSM_THERMAL_H
#define __MSM_THERMAL_H
struct msm_thermal_data {
uint32_t sensor_id;
uint32_t poll_ms;
msm: Add frequency backoff to thermal monitor Make thermal monitor performance hit more gradual by stepping down limit frequency instead of jumping directly to that frequency. The monitor now steps down to the lowest available cpufreq frequency, instead of fixing the limit frequency to 918MHz. Also update the polling frequency to 250ms to improve responsiveness. Change-Id: I6edb0cfc057284023978de04d7835e9783da5ebd Signed-off-by: Eugene Seah <eseah@codeaurora.org>
2012-06-26 00:16:41 +00:00
uint32_t limit_temp_degC;
uint32_t temp_hysteresis_degC;
uint32_t freq_step;
msm: thermal: Simplify kernel thermal safeguard mechanism Using CPUFreq policy objects and setting the max frequency limit by overriding the policy->max node, leads to race/overwrite conditions with an user trying to use the scaling_max_frequency node. The thermal limits are directly communicated to the 'msm' cpufreq driver and use the cpufreq_update_policy() to ensure that the frequency is limited as per the thermal safeguard requirements. CRs-fixed: 370343 Change-Id: Iab5a15e0f0d25da4b9f6a9417dbfc01bf5d6f8f6 Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
2012-05-25 23:36:07 +00:00
};
#ifdef CONFIG_THERMAL_MONITOR
extern int msm_thermal_init(struct msm_thermal_data *pdata);
thermal: msm_thermal: Define and implement device tree bindings Define device tree bindings for MSM_THERMAL driver, and implement matching code to make the driver abide to these bindings. Change-Id: I6ed08a09f45f8748841cf44db601f28659e49d9c Signed-off-by: Eugene Seah <eseah@codeaurora.org>
2012-07-03 01:28:50 +00:00
extern int msm_thermal_device_init(void);
msm: thermal: Simplify kernel thermal safeguard mechanism Using CPUFreq policy objects and setting the max frequency limit by overriding the policy->max node, leads to race/overwrite conditions with an user trying to use the scaling_max_frequency node. The thermal limits are directly communicated to the 'msm' cpufreq driver and use the cpufreq_update_policy() to ensure that the frequency is limited as per the thermal safeguard requirements. CRs-fixed: 370343 Change-Id: Iab5a15e0f0d25da4b9f6a9417dbfc01bf5d6f8f6 Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
2012-05-25 23:36:07 +00:00
#else
static inline int msm_thermal_init(struct msm_thermal_data *pdata)
{
return -ENOSYS;
}
thermal: msm_thermal: Define and implement device tree bindings Define device tree bindings for MSM_THERMAL driver, and implement matching code to make the driver abide to these bindings. Change-Id: I6ed08a09f45f8748841cf44db601f28659e49d9c Signed-off-by: Eugene Seah <eseah@codeaurora.org>
2012-07-03 01:28:50 +00:00
static inline int msm_thermal_device_init(void)
{
return -ENOSYS;
}
msm: thermal: Simplify kernel thermal safeguard mechanism Using CPUFreq policy objects and setting the max frequency limit by overriding the policy->max node, leads to race/overwrite conditions with an user trying to use the scaling_max_frequency node. The thermal limits are directly communicated to the 'msm' cpufreq driver and use the cpufreq_update_policy() to ensure that the frequency is limited as per the thermal safeguard requirements. CRs-fixed: 370343 Change-Id: Iab5a15e0f0d25da4b9f6a9417dbfc01bf5d6f8f6 Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
2012-05-25 23:36:07 +00:00
#endif
#endif /*__MSM_THERMAL_H*/
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