From: Thomas Abraham <ta.omasab@gmail.com> To: linux-samsung-soc@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: rjw@rjwysocki.net, kgene.kim@samsung.com, t.figa@samsung.com, l.majewski@samsung.com, viresh.kumar@linaro.org, thomas.ab@samsung.com, Nishanth Menon <nm@ti.com> Subject: [PATCH v3 1/2] cpufreq / OPP: Allow boost frequency to be looked up from device tree Date: Wed, 14 May 2014 06:32:59 +0530 [thread overview] Message-ID: <1400029380-5372-2-git-send-email-thomas.ab@samsung.com> (raw) In-Reply-To: <1400029380-5372-1-git-send-email-thomas.ab@samsung.com> From: Thomas Abraham <thomas.ab@samsung.com> Commit 6f19efc0 ("cpufreq: Add boost frequency support in core") adds support for CPU boost mode. This patch adds support for finding available boost frequencies from device tree and marking them as usable in boost mode. Cc: Nishanth Menon <nm@ti.com> Cc: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> --- drivers/cpufreq/cpufreq_opp.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 files changed, 39 insertions(+), 0 deletions(-) diff --git a/drivers/cpufreq/cpufreq_opp.c b/drivers/cpufreq/cpufreq_opp.c index c0c6f4a..e3c97f3 100644 --- a/drivers/cpufreq/cpufreq_opp.c +++ b/drivers/cpufreq/cpufreq_opp.c @@ -19,6 +19,7 @@ #include <linux/pm_opp.h> #include <linux/rcupdate.h> #include <linux/slab.h> +#include <linux/of.h> /** * dev_pm_opp_init_cpufreq_table() - create a cpufreq table for a device @@ -51,6 +52,10 @@ int dev_pm_opp_init_cpufreq_table(struct device *dev, struct cpufreq_frequency_table *freq_table = NULL; int i, max_opps, ret = 0; unsigned long rate; +#ifdef CONFIG_CPU_FREQ_BOOST_SW + int j, len; + u32 *boost_freqs = NULL; +#endif rcu_read_lock(); @@ -82,6 +87,40 @@ int dev_pm_opp_init_cpufreq_table(struct device *dev, *table = &freq_table[0]; +#ifdef CONFIG_CPU_FREQ_BOOST_SW + if (of_find_property(dev->of_node, "boost-frequency", &len)) { + if (len == 0 || (len & (sizeof(u32) - 1)) != 0) { + dev_err(dev, "%s: invalid boost frequency\n", __func__); + ret = -EINVAL; + goto out; + } + + boost_freqs = kzalloc(len, GFP_KERNEL); + if (!boost_freqs) { + dev_warn(dev, "%s: no memory for boost freq table\n", + __func__); + ret = -ENOMEM; + goto out; + } + of_property_read_u32_array(dev->of_node, "boost-frequency", + boost_freqs, len / sizeof(u32)); + } + + for (j = 0; j < len / sizeof(u32) && boost_freqs; j++) { + for (i = 0; freq_table[i].frequency != CPUFREQ_TABLE_END; i++) { + if (boost_freqs[j] == freq_table[i].frequency) { + freq_table[i].flags |= CPUFREQ_BOOST_FREQ; + break; + } + } + if (freq_table[i].frequency == CPUFREQ_TABLE_END) + pr_err("%s: invalid boost frequency %d\n", + __func__, boost_freqs[j]); + } + + kfree(boost_freqs); +#endif + out: rcu_read_unlock(); if (ret) -- 1.7.4.4
WARNING: multiple messages have this Message-ID (diff)
From: ta.omasab@gmail.com (Thomas Abraham) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 1/2] cpufreq / OPP: Allow boost frequency to be looked up from device tree Date: Wed, 14 May 2014 06:32:59 +0530 [thread overview] Message-ID: <1400029380-5372-2-git-send-email-thomas.ab@samsung.com> (raw) In-Reply-To: <1400029380-5372-1-git-send-email-thomas.ab@samsung.com> From: Thomas Abraham <thomas.ab@samsung.com> Commit 6f19efc0 ("cpufreq: Add boost frequency support in core") adds support for CPU boost mode. This patch adds support for finding available boost frequencies from device tree and marking them as usable in boost mode. Cc: Nishanth Menon <nm@ti.com> Cc: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> --- drivers/cpufreq/cpufreq_opp.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 files changed, 39 insertions(+), 0 deletions(-) diff --git a/drivers/cpufreq/cpufreq_opp.c b/drivers/cpufreq/cpufreq_opp.c index c0c6f4a..e3c97f3 100644 --- a/drivers/cpufreq/cpufreq_opp.c +++ b/drivers/cpufreq/cpufreq_opp.c @@ -19,6 +19,7 @@ #include <linux/pm_opp.h> #include <linux/rcupdate.h> #include <linux/slab.h> +#include <linux/of.h> /** * dev_pm_opp_init_cpufreq_table() - create a cpufreq table for a device @@ -51,6 +52,10 @@ int dev_pm_opp_init_cpufreq_table(struct device *dev, struct cpufreq_frequency_table *freq_table = NULL; int i, max_opps, ret = 0; unsigned long rate; +#ifdef CONFIG_CPU_FREQ_BOOST_SW + int j, len; + u32 *boost_freqs = NULL; +#endif rcu_read_lock(); @@ -82,6 +87,40 @@ int dev_pm_opp_init_cpufreq_table(struct device *dev, *table = &freq_table[0]; +#ifdef CONFIG_CPU_FREQ_BOOST_SW + if (of_find_property(dev->of_node, "boost-frequency", &len)) { + if (len == 0 || (len & (sizeof(u32) - 1)) != 0) { + dev_err(dev, "%s: invalid boost frequency\n", __func__); + ret = -EINVAL; + goto out; + } + + boost_freqs = kzalloc(len, GFP_KERNEL); + if (!boost_freqs) { + dev_warn(dev, "%s: no memory for boost freq table\n", + __func__); + ret = -ENOMEM; + goto out; + } + of_property_read_u32_array(dev->of_node, "boost-frequency", + boost_freqs, len / sizeof(u32)); + } + + for (j = 0; j < len / sizeof(u32) && boost_freqs; j++) { + for (i = 0; freq_table[i].frequency != CPUFREQ_TABLE_END; i++) { + if (boost_freqs[j] == freq_table[i].frequency) { + freq_table[i].flags |= CPUFREQ_BOOST_FREQ; + break; + } + } + if (freq_table[i].frequency == CPUFREQ_TABLE_END) + pr_err("%s: invalid boost frequency %d\n", + __func__, boost_freqs[j]); + } + + kfree(boost_freqs); +#endif + out: rcu_read_unlock(); if (ret) -- 1.7.4.4
next prev parent reply other threads:[~2014-05-14 1:02 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-05-14 1:02 [PATCH v3 0/2] cpufreq: opp: Add device tree based lookup of boost mode frequency Thomas Abraham 2014-05-14 1:02 ` Thomas Abraham 2014-05-14 1:02 ` Thomas Abraham [this message] 2014-05-14 1:02 ` [PATCH v3 1/2] cpufreq / OPP: Allow boost frequency to be looked up from device tree Thomas Abraham 2014-05-14 3:40 ` Viresh Kumar 2014-05-14 3:40 ` Viresh Kumar 2014-05-14 4:05 ` Nishanth Menon 2014-05-14 4:05 ` Nishanth Menon 2014-05-14 6:09 ` Lukasz Majewski 2014-05-14 6:09 ` Lukasz Majewski 2014-05-14 6:24 ` Viresh Kumar 2014-05-14 6:24 ` Viresh Kumar 2014-05-14 13:49 ` Thomas Abraham 2014-05-14 13:49 ` Thomas Abraham 2014-05-14 14:31 ` Nishanth Menon 2014-05-14 14:31 ` Nishanth Menon 2014-05-14 13:46 ` Thomas Abraham 2014-05-14 13:46 ` Thomas Abraham 2014-05-14 13:54 ` Viresh Kumar 2014-05-14 13:54 ` Viresh Kumar 2014-05-14 1:03 ` [PATCH v3 2/2] Documentation: devicetree: Add boost-frequency binding to list boost mode frequency Thomas Abraham 2014-05-14 1:03 ` Thomas Abraham 2014-05-14 2:02 ` Nishanth Menon 2014-05-14 2:02 ` Nishanth Menon 2014-05-14 13:17 ` Thomas Abraham 2014-05-14 13:17 ` Thomas Abraham 2014-05-14 15:06 ` Sudeep Holla 2014-05-14 15:06 ` Sudeep Holla
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