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Wysocki" , Viresh Kumar , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Matthias Brugger , AngeloGioacchino Del Regno CC: , , , , , Subject: [PATCH v2 3/4] cpufreq: mediatek: Add CPUFREQ_ASYNC_NOTIFICATION flag Date: Fri, 8 Nov 2024 14:39:41 +0800 Message-ID: <20241108063942.19744-4-chun-jen.tseng@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20241108063942.19744-1-chun-jen.tseng@mediatek.com> References: <20241108063942.19744-1-chun-jen.tseng@mediatek.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241107_223957_122396_CCA993B5 X-CRM114-Status: GOOD ( 11.63 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add CPUFREQ_ASYNC_NOTIFICATION flages for cpufreq policy because some of process will get CPU frequency by cpufreq sysfs node. It may get wrong frequency then call cpufreq_out_of_sync() to fixed frequency. Signed-off-by: Mark Tseng --- drivers/cpufreq/mediatek-cpufreq.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c index 6b3cd2b803bf..3369bdd9a348 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -209,12 +209,16 @@ static int mtk_cpufreq_set_target(struct cpufreq_policy *policy, struct dev_pm_opp *opp; long freq_hz, pre_freq_hz; int vproc, pre_vproc, inter_vproc, target_vproc, ret; + struct cpufreq_freqs freqs; mutex_lock(&mtk_policy_lock); inter_vproc = info->intermediate_voltage; + pre_freq_hz = policy->cur * 1000; - pre_freq_hz = clk_get_rate(cpu_clk); + freqs.old = policy->cur; + freqs.new = freq_table[index].frequency; + cpufreq_freq_transition_begin(policy, &freqs); if (unlikely(info->pre_vproc <= 0)) pre_vproc = regulator_get_voltage(info->proc_reg); @@ -309,6 +313,7 @@ static int mtk_cpufreq_set_target(struct cpufreq_policy *policy, info->current_freq = freq_hz; out: + cpufreq_freq_transition_end(policy, &freqs, false); mutex_unlock(&mtk_policy_lock); return ret; @@ -632,6 +637,7 @@ static unsigned int mtk_cpufreq_get(unsigned int cpu) static struct cpufreq_driver mtk_cpufreq_driver = { .flags = CPUFREQ_NEED_INITIAL_FREQ_CHECK | CPUFREQ_HAVE_GOVERNOR_PER_POLICY | + CPUFREQ_ASYNC_NOTIFICATION | CPUFREQ_IS_COOLING_DEV, .verify = cpufreq_generic_frequency_table_verify, .target_index = mtk_cpufreq_set_target,