Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754805Ab3HPC1x (ORCPT ); Thu, 15 Aug 2013 22:27:53 -0400 Received: from mail-pa0-f46.google.com ([209.85.220.46]:59472 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754580Ab3HPC1u (ORCPT ); Thu, 15 Aug 2013 22:27:50 -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 , Andrew Lunn Subject: [PATCH 16/34] cpufreq: kirkwood: remove calls to cpufreq_notify_transition() Date: Fri, 16 Aug 2013 07:55:13 +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: 3269 Lines: 107 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: Andrew Lunn Signed-off-by: Viresh Kumar --- drivers/cpufreq/kirkwood-cpufreq.c | 54 ++++++++++++++------------------------ 1 file changed, 20 insertions(+), 34 deletions(-) diff --git a/drivers/cpufreq/kirkwood-cpufreq.c b/drivers/cpufreq/kirkwood-cpufreq.c index c3d6987..fcf461e 100644 --- a/drivers/cpufreq/kirkwood-cpufreq.c +++ b/drivers/cpufreq/kirkwood-cpufreq.c @@ -58,48 +58,34 @@ static unsigned int kirkwood_cpufreq_get_cpu_frequency(unsigned int cpu) static int kirkwood_cpufreq_target(struct cpufreq_policy *policy, unsigned int index) { - struct cpufreq_freqs freqs; unsigned int state = kirkwood_freq_table[index].driver_data; unsigned long reg; - freqs.old = kirkwood_cpufreq_get_cpu_frequency(0); - freqs.new = kirkwood_freq_table[index].frequency; + local_irq_disable(); - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + /* Disable interrupts to the CPU */ + reg = readl_relaxed(priv.base); + reg |= CPU_SW_INT_BLK; + writel_relaxed(reg, priv.base); - dev_dbg(priv.dev, "Attempting to set frequency to %i KHz\n", - kirkwood_freq_table[index].frequency); - dev_dbg(priv.dev, "old frequency was %i KHz\n", - kirkwood_cpufreq_get_cpu_frequency(0)); - - if (freqs.old != freqs.new) { - local_irq_disable(); - - /* Disable interrupts to the CPU */ - reg = readl_relaxed(priv.base); - reg |= CPU_SW_INT_BLK; - writel_relaxed(reg, priv.base); - - switch (state) { - case STATE_CPU_FREQ: - clk_disable(priv.powersave_clk); - break; - case STATE_DDR_FREQ: - clk_enable(priv.powersave_clk); - break; - } + switch (state) { + case STATE_CPU_FREQ: + clk_disable(priv.powersave_clk); + break; + case STATE_DDR_FREQ: + clk_enable(priv.powersave_clk); + break; + } - /* Wait-for-Interrupt, while the hardware changes frequency */ - cpu_do_idle(); + /* Wait-for-Interrupt, while the hardware changes frequency */ + cpu_do_idle(); - /* Enable interrupts to the CPU */ - reg = readl_relaxed(priv.base); - reg &= ~CPU_SW_INT_BLK; - writel_relaxed(reg, priv.base); + /* Enable interrupts to the CPU */ + reg = readl_relaxed(priv.base); + reg &= ~CPU_SW_INT_BLK; + writel_relaxed(reg, priv.base); - local_irq_enable(); - } - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); + local_irq_enable(); return 0; } -- 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/