Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756356Ab3GEAvQ (ORCPT ); Thu, 4 Jul 2013 20:51:16 -0400 Received: from mail-ob0-f182.google.com ([209.85.214.182]:37767 "EHLO mail-ob0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753416Ab3GEAvP (ORCPT ); Thu, 4 Jul 2013 20:51:15 -0400 MIME-Version: 1.0 In-Reply-To: <1372951039-10375-4-git-send-email-k.krivyakin@samsung.com> References: <1372951039-10375-1-git-send-email-k.krivyakin@samsung.com> <1372951039-10375-4-git-send-email-k.krivyakin@samsung.com> Date: Fri, 5 Jul 2013 09:51:14 +0900 X-Google-Sender-Auth: GVuVnYMuKM3dpDh_IfBYKCzhIy4 Message-ID: Subject: Re: [PATCH RFC 3/3] Update current cpu power when cpu freq change for exynos. From: Kyungmin Park To: Konstantin Krivyakin , "Rafael J. Wysocki" , viresh.kumar@linaro.org, mingo@redhat.com, Peter Zijlstra Cc: i.zhbanov@samsung.com, e.voevodin@samsung.com, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3423 Lines: 87 + cpufreq maintainers On Fri, Jul 5, 2013 at 12:17 AM, Konstantin Krivyakin wrote: > Signed-off-by: Konstantin Krivyakin > --- > 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 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/