[PATCH 07/22] cpufreq: remove the sh-cpufreq driver

Christoph Hellwig
2023-01-13T06:27:31Z

Now that arch/sh is removed this driver is dead code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/cpufreq/Kconfig | 14 ---
drivers/cpufreq/Makefile | 1 -
drivers/cpufreq/sh-cpufreq.c | 175 -----------------------------------
3 files changed, 190 deletions(-)
delete mode 100644 drivers/cpufreq/sh-cpufreq.c

diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index 2a84fc63371e2e..75a7a486308d8c 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -298,20 +298,6 @@ config SPARC_US2E_CPUFREQ
If in doubt, say N.
endif

-if SUPERH
-config SH_CPU_FREQ
- tristate "SuperH CPU Frequency driver"
- help
- This adds the cpufreq driver for SuperH. Any CPU that supports
- clock rate rounding through the clock framework can use this
- driver. While it will make the kernel slightly larger, this is
- harmless for CPUs that don't support rate rounding. The driver
- will also generate a notice in the boot log before disabling
- itself if the CPU in question is not capable of rate rounding.
-
- If unsure, say N.
-endif
-
config QORIQ_CPUFREQ
tristate "CPU frequency scaling driver for Freescale QorIQ SoCs"
depends on OF && COMMON_CLK
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index 32a7029e25ed81..9c16e77e3e87c0 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -112,6 +112,5 @@ obj-$(CONFIG_BMIPS_CPUFREQ) += bmips-cpufreq.o
obj-$(CONFIG_IA64_ACPI_CPUFREQ) += ia64-acpi-cpufreq.o
obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o
obj-$(CONFIG_LOONGSON1_CPUFREQ) += loongson1-cpufreq.o
-obj-$(CONFIG_SH_CPU_FREQ) += sh-cpufreq.o
obj-$(CONFIG_SPARC_US2E_CPUFREQ) += sparc-us2e-cpufreq.o
obj-$(CONFIG_SPARC_US3_CPUFREQ) += sparc-us3-cpufreq.o
diff --git a/drivers/cpufreq/sh-cpufreq.c b/drivers/cpufreq/sh-cpufreq.c
deleted file mode 100644
index b8704232c27b24..00000000000000
--- a/drivers/cpufreq/sh-cpufreq.c
+++ /dev/null
@@ -1,175 +0,0 @@
-/*
- * cpufreq driver for the SuperH processors.
- *
- * Copyright (C) 2002 - 2012 Paul Mundt
- * Copyright (C) 2002 M. R. Brown
- *
- * Clock framework bits from arch/avr32/mach-at32ap/cpufreq.c
- *
- * Copyright (C) 2004-2007 Atmel Corporation
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#define pr_fmt(fmt) "cpufreq: " fmt
-
-#include <linux/types.h>
-#include <linux/cpufreq.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/cpumask.h>
-#include <linux/cpu.h>
-#include <linux/smp.h>
-#include <linux/clk.h>
-#include <linux/percpu.h>
-#include <linux/sh_clk.h>
-
-static DEFINE_PER_CPU(struct clk, sh_cpuclk);
-
-struct cpufreq_target {
- struct cpufreq_policy *policy;
- unsigned int freq;
-};
-
-static unsigned int sh_cpufreq_get(unsigned int cpu)
-{
- return (clk_get_rate(&per_cpu(sh_cpuclk, cpu)) + 500) / 1000;
-}
-
-static long __sh_cpufreq_target(void *arg)
-{
- struct cpufreq_target *target = arg;
- struct cpufreq_policy *policy = target->policy;
- int cpu = policy->cpu;
- struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
- struct cpufreq_freqs freqs;
- struct device *dev;
- long freq;
-
- if (smp_processor_id() != cpu)
- return -ENODEV;
-
- dev = get_cpu_device(cpu);
-
- /* Convert target_freq from kHz to Hz */
- freq = clk_round_rate(cpuclk, target->freq * 1000);
-
- if (freq < (policy->min * 1000) || freq > (policy->max * 1000))
- return -EINVAL;
-
- dev_dbg(dev, "requested frequency %u Hz\n", target->freq * 1000);
-
- freqs.old = sh_cpufreq_get(cpu);
- freqs.new = (freq + 500) / 1000;
- freqs.flags = 0;
-
- cpufreq_freq_transition_begin(target->policy, &freqs);
- clk_set_rate(cpuclk, freq);
- cpufreq_freq_transition_end(target->policy, &freqs, 0);
-
- dev_dbg(dev, "set frequency %lu Hz\n", freq);
- return 0;
-}
-
-/*
- * Here we notify other drivers of the proposed change and the final change.
- */
-static int sh_cpufreq_target(struct cpufreq_policy *policy,
- unsigned int target_freq,
- unsigned int relation)
-{
- struct cpufreq_target data = { .policy = policy, .freq = target_freq };
-
- return work_on_cpu(policy->cpu, __sh_cpufreq_target, &data);
-}
-
-static int sh_cpufreq_verify(struct cpufreq_policy_data *policy)
-{
- struct clk *cpuclk = &per_cpu(sh_cpuclk, policy->cpu);
- struct cpufreq_frequency_table *freq_table;
-
- freq_table = cpuclk->nr_freqs ? cpuclk->freq_table : NULL;
- if (freq_table)
- return cpufreq_frequency_table_verify(policy, freq_table);
-
- cpufreq_verify_within_cpu_limits(policy);
-
- policy->min = (clk_round_rate(cpuclk, 1) + 500) / 1000;
- policy->max = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
-
- cpufreq_verify_within_cpu_limits(policy);
- return 0;
-}
-
-static int sh_cpufreq_cpu_init(struct cpufreq_policy *policy)
-{
- unsigned int cpu = policy->cpu;
- struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
- struct cpufreq_frequency_table *freq_table;
- struct device *dev;
-
- dev = get_cpu_device(cpu);
-
- cpuclk = clk_get(dev, "cpu_clk");
- if (IS_ERR(cpuclk)) {
- dev_err(dev, "couldn't get CPU clk\n");
- return PTR_ERR(cpuclk);
- }
-
- freq_table = cpuclk->nr_freqs ? cpuclk->freq_table : NULL;
- if (freq_table) {
- policy->freq_table = freq_table;
- } else {
- dev_notice(dev, "no frequency table found, falling back "
- "to rate rounding.\n");
-
- policy->min = policy->cpuinfo.min_freq =
- (clk_round_rate(cpuclk, 1) + 500) / 1000;
- policy->max = policy->cpuinfo.max_freq =
- (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
- }
-
- return 0;
-}
-
-static int sh_cpufreq_cpu_exit(struct cpufreq_policy *policy)
-{
- unsigned int cpu = policy->cpu;
- struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
-
- clk_put(cpuclk);
-
- return 0;
-}
-
-static struct cpufreq_driver sh_cpufreq_driver = {
- .name = "sh",
- .flags = CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING,
- .get = sh_cpufreq_get,
- .target = sh_cpufreq_target,
- .verify = sh_cpufreq_verify,
- .init = sh_cpufreq_cpu_init,
- .exit = sh_cpufreq_cpu_exit,
- .attr = cpufreq_generic_attr,
-};
-
-static int __init sh_cpufreq_module_init(void)
-{
- pr_notice("SuperH CPU frequency driver.\n");
- return cpufreq_register_driver(&sh_cpufreq_driver);
-}
-
-static void __exit sh_cpufreq_module_exit(void)
-{
- cpufreq_unregister_driver(&sh_cpufreq_driver);
-}
-
-module_init(sh_cpufreq_module_init);
-module_exit(sh_cpufreq_module_exit);
-
-MODULE_AUTHOR("Paul Mundt <lethal@linux-sh.org>");
-MODULE_DESCRIPTION("cpufreq driver for SuperH");
-MODULE_LICENSE("GPL");
--
2.39.0