From 9c0ebcf78fde0ffa348a95a544c6d3f2dac5af65 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 25 Oct 2013 19:45:48 +0530 Subject: cpufreq: Implement light weight ->target_index() routine Currently, the prototype of cpufreq_drivers target routines is: int target(struct cpufreq_policy *policy, unsigned int target_freq, unsigned int relation); And most of the drivers call cpufreq_frequency_table_target() to get a valid index of their frequency table which is closest to the target_freq. And they don't use target_freq and relation after that. So, it makes sense to just do this work in cpufreq core before calling cpufreq_frequency_table_target() and simply pass index instead. But this can be done only with drivers which expose their frequency table with cpufreq core. For others we need to stick with the old prototype of target() until those drivers are converted to expose frequency tables. This patch implements the new light weight prototype for target_index() routine. It looks like this: int target_index(struct cpufreq_policy *policy, unsigned int index); CPUFreq core will call cpufreq_frequency_table_target() before calling this routine and pass index to it. Because CPUFreq core now requires to call routines present in freq_table.c CONFIG_CPU_FREQ_TABLE must be enabled all the time. This also marks target() interface as deprecated. So, that new drivers avoid using it. And Documentation is updated accordingly. It also converts existing .target() to newly defined light weight .target_index() routine for many driver. Acked-by: Hans-Christian Egtvedt Acked-by: Jesper Nilsson Acked-by: Linus Walleij Acked-by: Russell King Acked-by: David S. Miller Tested-by: Andrew Lunn Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- arch/arm/mach-sa1100/generic.c | 20 -------------------- arch/arm/mach-sa1100/generic.h | 2 -- 2 files changed, 22 deletions(-) (limited to 'arch/arm/mach-sa1100') diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index cb4b2ca3cf6b..d4ea142c4edd 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -62,26 +62,6 @@ struct cpufreq_frequency_table sa11x0_freq_table[NR_FREQS+1] = { { .frequency = CPUFREQ_TABLE_END, }, }; -/* rounds up(!) */ -unsigned int sa11x0_freq_to_ppcr(unsigned int khz) -{ - int i; - - for (i = 0; i < NR_FREQS; i++) - if (sa11x0_freq_table[i].frequency >= khz) - break; - - return i; -} - -unsigned int sa11x0_ppcr_to_freq(unsigned int idx) -{ - unsigned int freq = 0; - if (idx < NR_FREQS) - freq = sa11x0_freq_table[idx].frequency; - return freq; -} - unsigned int sa11x0_getspeed(unsigned int cpu) { if (cpu) diff --git a/arch/arm/mach-sa1100/generic.h b/arch/arm/mach-sa1100/generic.h index cbdfae744dc5..0d92e119b36b 100644 --- a/arch/arm/mach-sa1100/generic.h +++ b/arch/arm/mach-sa1100/generic.h @@ -21,9 +21,7 @@ extern void sa1110_mb_enable(void); extern void sa1110_mb_disable(void); extern struct cpufreq_frequency_table sa11x0_freq_table[]; -extern unsigned int sa11x0_freq_to_ppcr(unsigned int khz); extern unsigned int sa11x0_getspeed(unsigned int cpu); -extern unsigned int sa11x0_ppcr_to_freq(unsigned int idx); struct flash_platform_data; struct resource; -- cgit v1.2.3