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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-11-02 02:54:37 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-11-02 02:54:37 +0300
commit394f7164e65a734f815543d918c7bdc0587593a6 (patch)
tree19e57816a0c95a67e5f8cd20276673bc69df0556 /drivers/cpufreq
parentdcf3d0183f100a14f60eb5993e124a4a1322ee9a (diff)
parenta6eed752f5fb40990eb28fddb2b93258fb7e3be0 (diff)
downloadlinux-394f7164e65a734f815543d918c7bdc0587593a6.tar.xz
Merge branch 'pm-opp'
* pm-opp: PM / OPP: passing NULL to PTR_ERR() PM / OPP: Move cpu specific code to opp/cpu.c PM / OPP: Move opp core to its own directory PM / OPP: Prefix exported opp routines with dev_pm_opp_ PM / OPP: Rename opp init/free table routines PM / OPP: reuse of_parse_phandle()
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/Makefile1
-rw-r--r--drivers/cpufreq/arm_big_little.h2
-rw-r--r--drivers/cpufreq/arm_big_little_dt.c4
-rw-r--r--drivers/cpufreq/cpufreq-dt.c10
-rw-r--r--drivers/cpufreq/cpufreq_opp.c114
-rw-r--r--drivers/cpufreq/exynos5440-cpufreq.c6
-rw-r--r--drivers/cpufreq/imx6q-cpufreq.c6
-rw-r--r--drivers/cpufreq/mt8173-cpufreq.c6
8 files changed, 17 insertions, 132 deletions
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index 47a7ebbcf998..d11309c487d0 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -1,6 +1,5 @@
# CPUfreq core
obj-$(CONFIG_CPU_FREQ) += cpufreq.o freq_table.o
-obj-$(CONFIG_PM_OPP) += cpufreq_opp.o
# CPUfreq stats
obj-$(CONFIG_CPU_FREQ_STAT) += cpufreq_stats.o
diff --git a/drivers/cpufreq/arm_big_little.h b/drivers/cpufreq/arm_big_little.h
index a211f7db9d32..b88889d9387e 100644
--- a/drivers/cpufreq/arm_big_little.h
+++ b/drivers/cpufreq/arm_big_little.h
@@ -28,7 +28,7 @@ struct cpufreq_arm_bL_ops {
/*
* This must set opp table for cpu_dev in a similar way as done by
- * of_init_opp_table().
+ * dev_pm_opp_of_add_table().
*/
int (*init_opp_table)(struct device *cpu_dev);
diff --git a/drivers/cpufreq/arm_big_little_dt.c b/drivers/cpufreq/arm_big_little_dt.c
index 36d91dba2965..16ddeefe9443 100644
--- a/drivers/cpufreq/arm_big_little_dt.c
+++ b/drivers/cpufreq/arm_big_little_dt.c
@@ -54,7 +54,7 @@ static int dt_init_opp_table(struct device *cpu_dev)
return -ENOENT;
}
- ret = of_init_opp_table(cpu_dev);
+ ret = dev_pm_opp_of_add_table(cpu_dev);
of_node_put(np);
return ret;
@@ -82,7 +82,7 @@ static struct cpufreq_arm_bL_ops dt_bL_ops = {
.name = "dt-bl",
.get_transition_latency = dt_get_transition_latency,
.init_opp_table = dt_init_opp_table,
- .free_opp_table = of_free_opp_table,
+ .free_opp_table = dev_pm_opp_of_remove_table,
};
static int generic_bL_probe(struct platform_device *pdev)
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index 7c0d70e2a861..90d64081ddb3 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -216,7 +216,7 @@ static int cpufreq_init(struct cpufreq_policy *policy)
}
/* Get OPP-sharing information from "operating-points-v2" bindings */
- ret = of_get_cpus_sharing_opps(cpu_dev, policy->cpus);
+ ret = dev_pm_opp_of_get_sharing_cpus(cpu_dev, policy->cpus);
if (ret) {
/*
* operating-points-v2 not supported, fallback to old method of
@@ -238,7 +238,7 @@ static int cpufreq_init(struct cpufreq_policy *policy)
*
* OPPs might be populated at runtime, don't check for error here
*/
- of_cpumask_init_opp_table(policy->cpus);
+ dev_pm_opp_of_cpumask_add_table(policy->cpus);
/*
* But we need OPP table to function so if it is not there let's
@@ -261,7 +261,7 @@ static int cpufreq_init(struct cpufreq_policy *policy)
* OPP tables are initialized only for policy->cpu, do it for
* others as well.
*/
- ret = set_cpus_sharing_opps(cpu_dev, policy->cpus);
+ ret = dev_pm_opp_set_sharing_cpus(cpu_dev, policy->cpus);
if (ret)
dev_err(cpu_dev, "%s: failed to mark OPPs as shared: %d\n",
__func__, ret);
@@ -368,7 +368,7 @@ out_free_cpufreq_table:
out_free_priv:
kfree(priv);
out_free_opp:
- of_cpumask_free_opp_table(policy->cpus);
+ dev_pm_opp_of_cpumask_remove_table(policy->cpus);
out_node_put:
of_node_put(np);
out_put_reg_clk:
@@ -385,7 +385,7 @@ static int cpufreq_exit(struct cpufreq_policy *policy)
cpufreq_cooling_unregister(priv->cdev);
dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table);
- of_cpumask_free_opp_table(policy->related_cpus);
+ dev_pm_opp_of_cpumask_remove_table(policy->related_cpus);
clk_put(policy->clk);
if (!IS_ERR(priv->cpu_reg))
regulator_put(priv->cpu_reg);
diff --git a/drivers/cpufreq/cpufreq_opp.c b/drivers/cpufreq/cpufreq_opp.c
deleted file mode 100644
index 0f5e6d5f6da0..000000000000
--- a/drivers/cpufreq/cpufreq_opp.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * Generic OPP helper interface for CPUFreq drivers
- *
- * Copyright (C) 2009-2014 Texas Instruments Incorporated.
- * Nishanth Menon
- * Romit Dasgupta
- * Kevin Hilman
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/export.h>
-#include <linux/kernel.h>
-#include <linux/pm_opp.h>
-#include <linux/rcupdate.h>
-#include <linux/slab.h>
-
-/**
- * dev_pm_opp_init_cpufreq_table() - create a cpufreq table for a device
- * @dev: device for which we do this operation
- * @table: Cpufreq table returned back to caller
- *
- * Generate a cpufreq table for a provided device- this assumes that the
- * opp list is already initialized and ready for usage.
- *
- * This function allocates required memory for the cpufreq table. It is
- * expected that the caller does the required maintenance such as freeing
- * the table as required.
- *
- * Returns -EINVAL for bad pointers, -ENODEV if the device is not found, -ENOMEM
- * if no memory available for the operation (table is not populated), returns 0
- * if successful and table is populated.
- *
- * WARNING: It is important for the callers to ensure refreshing their copy of
- * the table if any of the mentioned functions have been invoked in the interim.
- *
- * Locking: The internal device_opp and opp structures are RCU protected.
- * Since we just use the regular accessor functions to access the internal data
- * structures, we use RCU read lock inside this function. As a result, users of
- * this function DONOT need to use explicit locks for invoking.
- */
-int dev_pm_opp_init_cpufreq_table(struct device *dev,
- struct cpufreq_frequency_table **table)
-{
- struct dev_pm_opp *opp;
- struct cpufreq_frequency_table *freq_table = NULL;
- int i, max_opps, ret = 0;
- unsigned long rate;
-
- rcu_read_lock();
-
- max_opps = dev_pm_opp_get_opp_count(dev);
- if (max_opps <= 0) {
- ret = max_opps ? max_opps : -ENODATA;
- goto out;
- }
-
- freq_table = kcalloc((max_opps + 1), sizeof(*freq_table), GFP_ATOMIC);
- if (!freq_table) {
- ret = -ENOMEM;
- goto out;
- }
-
- for (i = 0, rate = 0; i < max_opps; i++, rate++) {
- /* find next rate */
- opp = dev_pm_opp_find_freq_ceil(dev, &rate);
- if (IS_ERR(opp)) {
- ret = PTR_ERR(opp);
- goto out;
- }
- freq_table[i].driver_data = i;
- freq_table[i].frequency = rate / 1000;
-
- /* Is Boost/turbo opp ? */
- if (dev_pm_opp_is_turbo(opp))
- freq_table[i].flags = CPUFREQ_BOOST_FREQ;
- }
-
- freq_table[i].driver_data = i;
- freq_table[i].frequency = CPUFREQ_TABLE_END;
-
- *table = &freq_table[0];
-
-out:
- rcu_read_unlock();
- if (ret)
- kfree(freq_table);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_init_cpufreq_table);
-
-/**
- * dev_pm_opp_free_cpufreq_table() - free the cpufreq table
- * @dev: device for which we do this operation
- * @table: table to free
- *
- * Free up the table allocated by dev_pm_opp_init_cpufreq_table
- */
-void dev_pm_opp_free_cpufreq_table(struct device *dev,
- struct cpufreq_frequency_table **table)
-{
- if (!table)
- return;
-
- kfree(*table);
- *table = NULL;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_free_cpufreq_table);
diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c
index 21a90ed7f3d8..c0f3373706f4 100644
--- a/drivers/cpufreq/exynos5440-cpufreq.c
+++ b/drivers/cpufreq/exynos5440-cpufreq.c
@@ -360,7 +360,7 @@ static int exynos_cpufreq_probe(struct platform_device *pdev)
goto err_put_node;
}
- ret = of_init_opp_table(dvfs_info->dev);
+ ret = dev_pm_opp_of_add_table(dvfs_info->dev);
if (ret) {
dev_err(dvfs_info->dev, "failed to init OPP table: %d\n", ret);
goto err_put_node;
@@ -424,7 +424,7 @@ static int exynos_cpufreq_probe(struct platform_device *pdev)
err_free_table:
dev_pm_opp_free_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table);
err_free_opp:
- of_free_opp_table(dvfs_info->dev);
+ dev_pm_opp_of_remove_table(dvfs_info->dev);
err_put_node:
of_node_put(np);
dev_err(&pdev->dev, "%s: failed initialization\n", __func__);
@@ -435,7 +435,7 @@ static int exynos_cpufreq_remove(struct platform_device *pdev)
{
cpufreq_unregister_driver(&exynos_driver);
dev_pm_opp_free_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table);
- of_free_opp_table(dvfs_info->dev);
+ dev_pm_opp_of_remove_table(dvfs_info->dev);
return 0;
}
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index 9b4a7bd04dea..ef1fa8145419 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -236,7 +236,7 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
*/
num = dev_pm_opp_get_opp_count(cpu_dev);
if (num < 0) {
- ret = of_init_opp_table(cpu_dev);
+ ret = dev_pm_opp_of_add_table(cpu_dev);
if (ret < 0) {
dev_err(cpu_dev, "failed to init OPP table: %d\n", ret);
goto put_reg;
@@ -346,7 +346,7 @@ free_freq_table:
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
out_free_opp:
if (free_opp)
- of_free_opp_table(cpu_dev);
+ dev_pm_opp_of_remove_table(cpu_dev);
put_reg:
if (!IS_ERR(arm_reg))
regulator_put(arm_reg);
@@ -378,7 +378,7 @@ static int imx6q_cpufreq_remove(struct platform_device *pdev)
cpufreq_unregister_driver(&imx6q_cpufreq_driver);
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
if (free_opp)
- of_free_opp_table(cpu_dev);
+ dev_pm_opp_of_remove_table(cpu_dev);
regulator_put(arm_reg);
if (!IS_ERR(pu_reg))
regulator_put(pu_reg);
diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mt8173-cpufreq.c
index 49caed293a3b..83001dc5b646 100644
--- a/drivers/cpufreq/mt8173-cpufreq.c
+++ b/drivers/cpufreq/mt8173-cpufreq.c
@@ -344,7 +344,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
/* Both presence and absence of sram regulator are valid cases. */
sram_reg = regulator_get_exclusive(cpu_dev, "sram");
- ret = of_init_opp_table(cpu_dev);
+ ret = dev_pm_opp_of_add_table(cpu_dev);
if (ret) {
pr_warn("no OPP table for cpu%d\n", cpu);
goto out_free_resources;
@@ -378,7 +378,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
return 0;
out_free_opp_table:
- of_free_opp_table(cpu_dev);
+ dev_pm_opp_of_remove_table(cpu_dev);
out_free_resources:
if (!IS_ERR(proc_reg))
@@ -404,7 +404,7 @@ static void mtk_cpu_dvfs_info_release(struct mtk_cpu_dvfs_info *info)
if (!IS_ERR(info->inter_clk))
clk_put(info->inter_clk);
- of_free_opp_table(info->cpu_dev);
+ dev_pm_opp_of_remove_table(info->cpu_dev);
}
static int mtk_cpufreq_init(struct cpufreq_policy *policy)