From 51315cdfa0521fff3059cec5fb8ffecc7f37cba7 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Sun, 19 Oct 2014 11:30:27 +0200 Subject: cpufreq: allow driver-specific data This commit extends the cpufreq_driver structure with an additional 'void *driver_data' field that can be filled by the ->probe() function of a cpufreq driver to pass additional custom information to the driver itself. A new function called cpufreq_get_driver_data() is added to allow a cpufreq driver to retrieve those driver data, since they are typically needed from a cpufreq_policy->init() callback, which does not have access to the cpufreq_driver structure. This function call is similar to the existing cpufreq_get_current_driver() function call. Signed-off-by: Thomas Petazzoni Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 138336b6bb04..503b085b7832 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -219,6 +219,7 @@ __ATTR(_name, 0644, show_##_name, store_##_name) struct cpufreq_driver { char name[CPUFREQ_NAME_LEN]; u8 flags; + void *driver_data; /* needed by all drivers */ int (*init) (struct cpufreq_policy *policy); @@ -312,6 +313,7 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data); int cpufreq_unregister_driver(struct cpufreq_driver *driver_data); const char *cpufreq_get_current_driver(void); +void *cpufreq_get_driver_data(void); static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, unsigned int min, unsigned int max) -- cgit v1.2.3 From 34e5a5273d6aa0ee8836bd5d6111b135ffae6931 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Sun, 19 Oct 2014 11:30:28 +0200 Subject: cpufreq: cpufreq-dt: extend with platform_data This commit extends the cpufreq-dt driver to take a platform_data structure. This structure is for now used to tell the cpufreq-dt driver the layout of the clocks on the platform, i.e whether all CPUs share the same clock or whether each CPU has a separate clock. Signed-off-by: Thomas Petazzoni Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq-dt.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/cpufreq-dt.h (limited to 'include') diff --git a/include/linux/cpufreq-dt.h b/include/linux/cpufreq-dt.h new file mode 100644 index 000000000000..0414009e2c30 --- /dev/null +++ b/include/linux/cpufreq-dt.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2014 Marvell + * Thomas Petazzoni + * + * 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. + */ + +#ifndef __CPUFREQ_DT_H__ +#define __CPUFREQ_DT_H__ + +struct cpufreq_dt_platform_data { + /* + * True when each CPU has its own clock to control its + * frequency, false when all CPUs are controlled by a single + * clock. + */ + bool independent_clocks; +}; + +#endif /* __CPUFREQ_DT_H__ */ -- cgit v1.2.3