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61d4e27607
Define specific QoS notifier for common clk framework and protect it with CONFIG_COMMON_CLK This new API will first get min/max requirements from pm_qos and set min/max freq values in devfreq A call to update_devfreq() will then ensure that new estimated frequency is clipped appropriately between min and max values This also ensures that frequency is set along with all the book-keeping Add below platform specific notifier callback and use it with pm_qos_add_notifier() int (*qos_notify)() If qos_notify is set, then only register the callback We currently support only one qos_id which is treated as notifier for min frequency Remove dependency on qos_id, and use appropriate QoS APIs like pm_qos_read_min/max_bound() Store devfreq's min/max frequency in struct gk20a for reference Bug 1772462 Change-Id: I63d6d17451d19c9d376b67df7db775b38929287d Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/1161161 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/*
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* gk20a clock scaling profile
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*
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* Copyright (c) 2013-2016, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GK20A_SCALE_H
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#define GK20A_SCALE_H
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#include <linux/devfreq.h>
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struct clk;
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struct gk20a_scale_profile {
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struct device *dev;
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ktime_t last_event_time;
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struct devfreq_dev_profile devfreq_profile;
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struct devfreq_dev_status dev_stat;
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struct notifier_block qos_notify_block;
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void *private_data;
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};
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/* Initialization and de-initialization for module */
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void gk20a_scale_init(struct device *);
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void gk20a_scale_exit(struct device *);
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void gk20a_scale_hw_init(struct device *dev);
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#if defined(CONFIG_GK20A_DEVFREQ)
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/*
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* call when performing submit to notify scaling mechanism that the module is
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* in use
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*/
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void gk20a_scale_notify_busy(struct device *);
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void gk20a_scale_notify_idle(struct device *);
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void gk20a_scale_suspend(struct device *);
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void gk20a_scale_resume(struct device *);
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int gk20a_scale_qos_notify(struct notifier_block *nb,
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unsigned long n, void *p);
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#else
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static inline void gk20a_scale_notify_busy(struct device *dev) {}
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static inline void gk20a_scale_notify_idle(struct device *dev) {}
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static inline void gk20a_scale_suspend(struct device *dev) {}
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static inline void gk20a_scale_resume(struct device *dev) {}
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static inline int gk20a_scale_qos_notify(struct notifier_block *nb,
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unsigned long n, void *p)
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{
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return -ENOSYS;
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}
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#endif
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#endif
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