Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755292Ab3HPC3T (ORCPT ); Thu, 15 Aug 2013 22:29:19 -0400 Received: from mail-pa0-f46.google.com ([209.85.220.46]:38468 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755214Ab3HPC3N (ORCPT ); Thu, 15 Aug 2013 22:29:13 -0400 From: Viresh Kumar To: rjw@sisk.pl Cc: linaro-kernel@lists.linaro.org, patches@linaro.org, cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Viresh Kumar , Kukjin Kim Subject: [PATCH 27/34] cpufreq: s3c: remove calls to cpufreq_notify_transition() Date: Fri, 16 Aug 2013 07:55:24 +0530 Message-Id: <0be9b361e489242664f6f9369c4352d01bf4f009.1376619363.git.viresh.kumar@linaro.org> X-Mailer: git-send-email 1.7.12.rc2.18.g61b472e In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5568 Lines: 180 Most of the drivers do following in their ->target_index() routines: struct cpufreq_freqs freqs; freqs.old = old freq... freqs.new = new freq... cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); /* Change rate here */ cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); This is replicated over all cpufreq drivers today and there doesn't exists a good enough reason why this shouldn't be moved to cpufreq core instead. Earlier patches have added support in cpufreq core to do cpufreq notification on frequency change, this one removes it from this driver. Some related minor cleanups are also done along with it. Cc: Kukjin Kim Signed-off-by: Viresh Kumar --- drivers/cpufreq/s3c2416-cpufreq.c | 21 ++++------------- drivers/cpufreq/s3c64xx-cpufreq.c | 48 +++++++++++++-------------------------- 2 files changed, 20 insertions(+), 49 deletions(-) diff --git a/drivers/cpufreq/s3c2416-cpufreq.c b/drivers/cpufreq/s3c2416-cpufreq.c index 9b22cc4..0e13914 100644 --- a/drivers/cpufreq/s3c2416-cpufreq.c +++ b/drivers/cpufreq/s3c2416-cpufreq.c @@ -220,7 +220,7 @@ static int s3c2416_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index) { struct s3c2416_data *s3c_freq = &s3c2416_cpufreq; - struct cpufreq_freqs freqs; + unsigned int new_freq; int idx, ret, to_dvs = 0; mutex_lock(&cpufreq_lock); @@ -237,25 +237,14 @@ static int s3c2416_cpufreq_set_target(struct cpufreq_policy *policy, goto out; } - freqs.flags = 0; - freqs.old = s3c_freq->is_dvs ? FREQ_DVS - : clk_get_rate(s3c_freq->armclk) / 1000; - /* When leavin dvs mode, always switch the armdiv to the hclk rate * The S3C2416 has stability issues when switching directly to * higher frequencies. */ - freqs.new = (s3c_freq->is_dvs && !to_dvs) + new_freq = (s3c_freq->is_dvs && !to_dvs) ? clk_get_rate(s3c_freq->hclk) / 1000 : s3c_freq->freq_table[index].frequency; - pr_debug("cpufreq: Transition %d-%dkHz\n", freqs.old, freqs.new); - - if (!to_dvs && freqs.old == freqs.new) - goto out; - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - if (to_dvs) { pr_debug("cpufreq: enter dvs\n"); ret = s3c2416_cpufreq_enter_dvs(s3c_freq, idx); @@ -263,12 +252,10 @@ static int s3c2416_cpufreq_set_target(struct cpufreq_policy *policy, pr_debug("cpufreq: leave dvs\n"); ret = s3c2416_cpufreq_leave_dvs(s3c_freq, idx); } else { - pr_debug("cpufreq: change armdiv to %dkHz\n", freqs.new); - ret = s3c2416_cpufreq_set_armdiv(s3c_freq, freqs.new); + pr_debug("cpufreq: change armdiv to %dkHz\n", new_freq); + ret = s3c2416_cpufreq_set_armdiv(s3c_freq, new_freq); } - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - out: mutex_unlock(&cpufreq_lock); diff --git a/drivers/cpufreq/s3c64xx-cpufreq.c b/drivers/cpufreq/s3c64xx-cpufreq.c index 5357dc4..a983559 100644 --- a/drivers/cpufreq/s3c64xx-cpufreq.c +++ b/drivers/cpufreq/s3c64xx-cpufreq.c @@ -65,54 +65,46 @@ static unsigned int s3c64xx_cpufreq_get_speed(unsigned int cpu) static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index) { - int ret; - struct cpufreq_freqs freqs; struct s3c64xx_dvfs *dvfs; + unsigned int old_freq, new_freq; + int ret; - freqs.old = clk_get_rate(armclk) / 1000; - freqs.new = s3c64xx_freq_table[index].frequency; - freqs.flags = 0; + old_freq = clk_get_rate(armclk) / 1000; + new_freq = s3c64xx_freq_table[index].frequency; dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[index].driver_data]; - pr_debug("Transition %d-%dkHz\n", freqs.old, freqs.new); - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - #ifdef CONFIG_REGULATOR - if (vddarm && freqs.new > freqs.old) { + if (vddarm && new_freq > old_freq) { ret = regulator_set_voltage(vddarm, dvfs->vddarm_min, dvfs->vddarm_max); if (ret != 0) { pr_err("Failed to set VDDARM for %dkHz: %d\n", - freqs.new, ret); - freqs.new = freqs.old; - goto post_notify; + new_freq, ret); + return ret; } } #endif - ret = clk_set_rate(armclk, freqs.new * 1000); + ret = clk_set_rate(armclk, new_freq * 1000); if (ret < 0) { pr_err("Failed to set rate %dkHz: %d\n", - freqs.new, ret); - freqs.new = freqs.old; + new_freq, ret); + return ret; } -post_notify: - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - if (ret) - goto err; - #ifdef CONFIG_REGULATOR - if (vddarm && freqs.new < freqs.old) { + if (vddarm && new_freq < old_freq) { ret = regulator_set_voltage(vddarm, dvfs->vddarm_min, dvfs->vddarm_max); if (ret != 0) { pr_err("Failed to set VDDARM for %dkHz: %d\n", - freqs.new, ret); - goto err_clk; + new_freq, ret); + if (clk_set_rate(armclk, old_freq * 1000) < 0) + pr_err("Failed to restore original clock rate\n"); + + return ret; } } #endif @@ -121,14 +113,6 @@ post_notify: clk_get_rate(armclk) / 1000); return 0; - -err_clk: - if (clk_set_rate(armclk, freqs.old * 1000) < 0) - pr_err("Failed to restore original clock rate\n"); -err: - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - - return ret; } #ifdef CONFIG_REGULATOR -- 1.7.12.rc2.18.g61b472e -- 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/