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authorSudeep Holla <sudeep.holla@arm.com>2018-10-24 14:44:58 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-10-25 18:39:02 +0200
commitf174e49e4906d945a0e4de98fbf796de31614f47 (patch)
tree75dc9cba68212b9f72462c69e4ce5071d8fe99c1
parenta7314405d83c8f95736edb0ea7ade5d459b79afe (diff)
downloadlinux-f174e49e4906d945a0e4de98fbf796de31614f47.tar.gz
cpufreq: remove unused arm_big_little_dt driver
Most of the ARM platforms used cpufreq-dt driver irrespective of whether it's big-little(HMP) or SMP system. This arm_big_little_dt is not used actively at all. So let's remove the driver, so that it need not be maintained. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-rw-r--r--MAINTAINERS1
-rw-r--r--drivers/cpufreq/Kconfig.arm7
-rw-r--r--drivers/cpufreq/Makefile3
-rw-r--r--drivers/cpufreq/arm_big_little_dt.c100
4 files changed, 0 insertions, 111 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 16fb17ce1475..874cc7a54e56 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3838,7 +3838,6 @@ W: http://www.arm.com/products/processors/technologies/biglittleprocessing.php
S: Maintained
F: drivers/cpufreq/arm_big_little.h
F: drivers/cpufreq/arm_big_little.c
-F: drivers/cpufreq/arm_big_little_dt.c
CPU POWER MONITORING SUBSYSTEM
M: Thomas Renninger <trenn@suse.com>
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index 040cfedf3e37..4e1131ef85ae 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -35,13 +35,6 @@ config ARM_BIG_LITTLE_CPUFREQ
help
This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
-config ARM_DT_BL_CPUFREQ
- tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
- depends on ARM_BIG_LITTLE_CPUFREQ && OF
- help
- This enables probing via DT for Generic CPUfreq driver for ARM
- big.LITTLE platform. This gets frequency tables from DT.
-
config ARM_SCPI_CPUFREQ
tristate "SCPI based CPUfreq driver"
depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index c1ffeabe4ecf..d5ee4562ed06 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -48,9 +48,6 @@ obj-$(CONFIG_X86_SFI_CPUFREQ) += sfi-cpufreq.o
##################################################################################
# ARM SoC drivers
obj-$(CONFIG_ARM_BIG_LITTLE_CPUFREQ) += arm_big_little.o
-# big LITTLE per platform glues. Keep DT_BL_CPUFREQ as the last entry in all big
-# LITTLE drivers, so that it is probed last.
-obj-$(CONFIG_ARM_DT_BL_CPUFREQ) += arm_big_little_dt.o
obj-$(CONFIG_ARM_ARMADA_37XX_CPUFREQ) += armada-37xx-cpufreq.o
obj-$(CONFIG_ARM_BRCMSTB_AVS_CPUFREQ) += brcmstb-avs-cpufreq.o
diff --git a/drivers/cpufreq/arm_big_little_dt.c b/drivers/cpufreq/arm_big_little_dt.c
deleted file mode 100644
index b944f290c8a4..000000000000
--- a/drivers/cpufreq/arm_big_little_dt.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Generic big.LITTLE CPUFreq Interface driver
- *
- * It provides necessary ops to arm_big_little cpufreq driver and gets
- * Frequency information from Device Tree. Freq table in DT must be in KHz.
- *
- * Copyright (C) 2013 Linaro.
- * Viresh Kumar <viresh.kumar@linaro.org>
- *
- * 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.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/export.h>
-#include <linux/module.h>
-#include <linux/of_device.h>
-#include <linux/pm_opp.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include "arm_big_little.h"
-
-/* get cpu node with valid operating-points */
-static struct device_node *get_cpu_node_with_valid_op(int cpu)
-{
- struct device_node *np = of_cpu_device_node_get(cpu);
-
- if (!of_get_property(np, "operating-points", NULL)) {
- of_node_put(np);
- np = NULL;
- }
-
- return np;
-}
-
-static int dt_get_transition_latency(struct device *cpu_dev)
-{
- struct device_node *np;
- u32 transition_latency = CPUFREQ_ETERNAL;
-
- np = of_node_get(cpu_dev->of_node);
- if (!np) {
- pr_info("Failed to find cpu node. Use CPUFREQ_ETERNAL transition latency\n");
- return CPUFREQ_ETERNAL;
- }
-
- of_property_read_u32(np, "clock-latency", &transition_latency);
- of_node_put(np);
-
- pr_debug("%s: clock-latency: %d\n", __func__, transition_latency);
- return transition_latency;
-}
-
-static const struct cpufreq_arm_bL_ops dt_bL_ops = {
- .name = "dt-bl",
- .get_transition_latency = dt_get_transition_latency,
- .init_opp_table = dev_pm_opp_of_cpumask_add_table,
- .free_opp_table = dev_pm_opp_of_cpumask_remove_table,
-};
-
-static int generic_bL_probe(struct platform_device *pdev)
-{
- struct device_node *np;
-
- np = get_cpu_node_with_valid_op(0);
- if (!np)
- return -ENODEV;
-
- of_node_put(np);
- return bL_cpufreq_register(&dt_bL_ops);
-}
-
-static int generic_bL_remove(struct platform_device *pdev)
-{
- bL_cpufreq_unregister(&dt_bL_ops);
- return 0;
-}
-
-static struct platform_driver generic_bL_platdrv = {
- .driver = {
- .name = "arm-bL-cpufreq-dt",
- },
- .probe = generic_bL_probe,
- .remove = generic_bL_remove,
-};
-module_platform_driver(generic_bL_platdrv);
-
-MODULE_AUTHOR("Viresh Kumar <viresh.kumar@linaro.org>");
-MODULE_DESCRIPTION("Generic ARM big LITTLE cpufreq driver via DT");
-MODULE_LICENSE("GPL v2");