Messages in this thread Patch in this message | | | From | Konstantin Krivyakin <> | Subject | [PATCH RFC 3/3] Update current cpu power when cpu freq change for exynos. | Date | Thu, 04 Jul 2013 19:17:19 +0400 |
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Signed-off-by: Konstantin Krivyakin <k.krivyakin@samsung.com> --- drivers/cpufreq/exynos-cpufreq.c | 2 ++ drivers/cpufreq/exynos-cpufreq.h | 1 + drivers/cpufreq/exynos4x12-cpufreq.c | 19 ++++++++++++++++++- 3 files changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c index 0d32f02..02f17bc 100644 --- a/drivers/cpufreq/exynos-cpufreq.c +++ b/drivers/cpufreq/exynos-cpufreq.c @@ -178,6 +178,8 @@ static int exynos_target(struct cpufreq_policy *policy, } new_freq = freq_table[index].frequency; + if (exynos_info->power_table) + policy->current_power = exynos_info->power_table[index]; ret = exynos_cpufreq_scale(new_freq); diff --git a/drivers/cpufreq/exynos-cpufreq.h b/drivers/cpufreq/exynos-cpufreq.h index 92b852e..64f964f 100644 --- a/drivers/cpufreq/exynos-cpufreq.h +++ b/drivers/cpufreq/exynos-cpufreq.h @@ -38,6 +38,7 @@ struct exynos_dvfs_info { unsigned int pll_safe_idx; struct clk *cpu_clk; unsigned int *volt_table; + u64 *power_table; struct cpufreq_frequency_table *freq_table; void (*set_freq)(unsigned int, unsigned int); bool (*need_apll_change)(unsigned int, unsigned int); diff --git a/drivers/cpufreq/exynos4x12-cpufreq.c b/drivers/cpufreq/exynos4x12-cpufreq.c index 08b7477..8905f9b 100644 --- a/drivers/cpufreq/exynos4x12-cpufreq.c +++ b/drivers/cpufreq/exynos4x12-cpufreq.c @@ -219,6 +219,7 @@ static void exynos4x12_set_frequency(unsigned int old_index, int exynos4x12_cpufreq_init(struct exynos_dvfs_info *info) { unsigned long rate; + int freq_count; cpu_clk = clk_get(NULL, "armclk"); if (IS_ERR(cpu_clk)) @@ -252,8 +253,24 @@ int exynos4x12_cpufreq_init(struct exynos_dvfs_info *info) info->set_freq = exynos4x12_set_frequency; info->need_apll_change = exynos4x12_pms_change; - return 0; + freq_count = sizeof(exynos4x12_freq_table) / + sizeof(struct cpufreq_frequency_table); + info->power_table = kzalloc(sizeof(u64) * freq_count, GFP_KERNEL); + if (!info->power_table) + goto err_power_table; + + for (i = 0; i <= freq_count; ++i) { + u64 freq = info->freq_table[i].frequency; + u64 volt = info->volt_table[i]; + do_div(freq, 1000); + do_div(volt, 1000); + info->power_table[i] = freq * volt * volt; + } + + return 0; +err_power_table: + clk_put(mout_appl); err_mout_apll: clk_put(mout_mpll); err_mout_mpll: -- 1.7.9.5
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