Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934293Ab3IMN0O (ORCPT ); Fri, 13 Sep 2013 09:26:14 -0400 Received: from mail-pa0-f54.google.com ([209.85.220.54]:48288 "EHLO mail-pa0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934276Ab3IMN0G (ORCPT ); Fri, 13 Sep 2013 09:26:06 -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 , Shawn Guo Subject: [PATCH 194/228] cpufreq: imx6q: remove calls to cpufreq_notify_transition() Date: Fri, 13 Sep 2013 18:32:20 +0530 Message-Id: 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: 4497 Lines: 136 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: Shawn Guo Signed-off-by: Viresh Kumar --- drivers/cpufreq/imx6q-cpufreq.c | 37 +++++++++++++++---------------------- 1 file changed, 15 insertions(+), 22 deletions(-) diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index e8846d7..a3829a0 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -41,14 +41,14 @@ static unsigned int imx6q_get_speed(unsigned int cpu) static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index) { - struct cpufreq_freqs freqs; struct opp *opp; unsigned long freq_hz, volt, volt_old; + unsigned int old_freq, new_freq; int ret; - freqs.new = freq_table[index].frequency; - freq_hz = freqs.new * 1000; - freqs.old = clk_get_rate(arm_clk) / 1000; + new_freq = freq_table[index].frequency; + freq_hz = new_freq * 1000; + old_freq = clk_get_rate(arm_clk) / 1000; rcu_read_lock(); opp = opp_find_freq_ceil(cpu_dev, &freq_hz); @@ -63,26 +63,23 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index) volt_old = regulator_get_voltage(arm_reg); dev_dbg(cpu_dev, "%u MHz, %ld mV --> %u MHz, %ld mV\n", - freqs.old / 1000, volt_old / 1000, - freqs.new / 1000, volt / 1000); - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + old_freq / 1000, volt_old / 1000, + new_freq / 1000, volt / 1000); /* scaling up? scale voltage before frequency */ - if (freqs.new > freqs.old) { + if (new_freq > old_freq) { ret = regulator_set_voltage_tol(arm_reg, volt, 0); if (ret) { dev_err(cpu_dev, "failed to scale vddarm up: %d\n", ret); - freqs.new = freqs.old; - goto post_notify; + return ret; } /* * Need to increase vddpu and vddsoc for safety * if we are about to run at 1.2 GHz. */ - if (freqs.new == FREQ_1P2_GHZ / 1000) { + if (new_freq == FREQ_1P2_GHZ / 1000) { regulator_set_voltage_tol(pu_reg, PU_SOC_VOLTAGE_HIGH, 0); regulator_set_voltage_tol(soc_reg, @@ -102,21 +99,20 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index) clk_set_parent(step_clk, pll2_pfd2_396m_clk); clk_set_parent(pll1_sw_clk, step_clk); if (freq_hz > clk_get_rate(pll2_pfd2_396m_clk)) { - clk_set_rate(pll1_sys_clk, freqs.new * 1000); + clk_set_rate(pll1_sys_clk, new_freq * 1000); clk_set_parent(pll1_sw_clk, pll1_sys_clk); } /* Ensure the arm clock divider is what we expect */ - ret = clk_set_rate(arm_clk, freqs.new * 1000); + ret = clk_set_rate(arm_clk, new_freq * 1000); if (ret) { dev_err(cpu_dev, "failed to set clock rate: %d\n", ret); regulator_set_voltage_tol(arm_reg, volt_old, 0); - freqs.new = freqs.old; - goto post_notify; + return ret; } /* scaling down? scale voltage after frequency */ - if (freqs.new < freqs.old) { + if (new_freq < old_freq) { ret = regulator_set_voltage_tol(arm_reg, volt, 0); if (ret) { dev_warn(cpu_dev, @@ -124,7 +120,7 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index) ret = 0; } - if (freqs.old == FREQ_1P2_GHZ / 1000) { + if (old_freq == FREQ_1P2_GHZ / 1000) { regulator_set_voltage_tol(pu_reg, PU_SOC_VOLTAGE_NORMAL, 0); regulator_set_voltage_tol(soc_reg, @@ -132,10 +128,7 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index) } } -post_notify: - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - - return ret; + return 0; } static int imx6q_cpufreq_init(struct cpufreq_policy *policy) -- 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/