[PATCH v2 5/5] ARM: imx: Remove cpufreq driver
Markus Pargmann
mpa at pengutronix.de
Wed Mar 27 09:01:34 EDT 2013
The old cpufreq driver is not necessary anymore with DT and
cpufreq-cpu0.
Signed-off-by: Markus Pargmann <mpa at pengutronix.de>
---
arch/arm/Kconfig | 7 --
arch/arm/mach-imx/Makefile | 1 -
arch/arm/mach-imx/cpu_op-mx51.c | 31 -----
arch/arm/mach-imx/cpu_op-mx51.h | 14 ---
arch/arm/mach-imx/cpufreq.c | 206 ----------------------------------
arch/arm/mach-imx/mach-cpuimx51sd.c | 5 -
arch/arm/mach-imx/mach-mx51_babbage.c | 4 -
7 files changed, 268 deletions(-)
delete mode 100644 arch/arm/mach-imx/cpu_op-mx51.c
delete mode 100644 arch/arm/mach-imx/cpu_op-mx51.h
delete mode 100644 arch/arm/mach-imx/cpufreq.c
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 13b7394..c5ed84c 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2153,13 +2153,6 @@ if ARCH_HAS_CPUFREQ
source "drivers/cpufreq/Kconfig"
-config CPU_FREQ_IMX
- tristate "CPUfreq driver for i.MX CPUs"
- depends on ARCH_MXC && CPU_FREQ
- select CPU_FREQ_TABLE
- help
- This enables the CPUfreq driver for i.MX CPUs.
-
config CPU_FREQ_SA1100
bool
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index c4ce090..e313433 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -27,7 +27,6 @@ obj-$(CONFIG_IRAM_ALLOC) += iram_alloc.o
obj-$(CONFIG_MXC_ULPI) += ulpi.o
obj-$(CONFIG_MXC_USE_EPIT) += epit.o
obj-$(CONFIG_MXC_DEBUG_BOARD) += 3ds_debugboard.o
-obj-$(CONFIG_CPU_FREQ_IMX) += cpufreq.o
ifeq ($(CONFIG_CPU_IDLE),y)
obj-y += cpuidle.o
diff --git a/arch/arm/mach-imx/cpu_op-mx51.c b/arch/arm/mach-imx/cpu_op-mx51.c
deleted file mode 100644
index b9ef692..0000000
--- a/arch/arm/mach-imx/cpu_op-mx51.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
- */
-
-/*
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <linux/bug.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include "hardware.h"
-
-static struct cpu_op mx51_cpu_op[] = {
- {
- .cpu_rate = 160000000,},
- {
- .cpu_rate = 800000000,},
-};
-
-struct cpu_op *mx51_get_cpu_op(int *op)
-{
- *op = ARRAY_SIZE(mx51_cpu_op);
- return mx51_cpu_op;
-}
diff --git a/arch/arm/mach-imx/cpu_op-mx51.h b/arch/arm/mach-imx/cpu_op-mx51.h
deleted file mode 100644
index 97477fe..0000000
--- a/arch/arm/mach-imx/cpu_op-mx51.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
- */
-
-/*
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-extern struct cpu_op *mx51_get_cpu_op(int *op);
diff --git a/arch/arm/mach-imx/cpufreq.c b/arch/arm/mach-imx/cpufreq.c
deleted file mode 100644
index d8c75c3..0000000
--- a/arch/arm/mach-imx/cpufreq.c
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
- */
-
-/*
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-/*
- * A driver for the Freescale Semiconductor i.MXC CPUfreq module.
- * The CPUFREQ driver is for controlling CPU frequency. It allows you to change
- * the CPU clock speed on the fly.
- */
-
-#include <linux/module.h>
-#include <linux/cpufreq.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-
-#include "hardware.h"
-
-#define CLK32_FREQ 32768
-#define NANOSECOND (1000 * 1000 * 1000)
-
-struct cpu_op *(*get_cpu_op)(int *op);
-
-static int cpu_freq_khz_min;
-static int cpu_freq_khz_max;
-
-static struct clk *cpu_clk;
-static struct cpufreq_frequency_table *imx_freq_table;
-
-static int cpu_op_nr;
-static struct cpu_op *cpu_op_tbl;
-
-static int set_cpu_freq(int freq)
-{
- int ret = 0;
- int org_cpu_rate;
-
- org_cpu_rate = clk_get_rate(cpu_clk);
- if (org_cpu_rate == freq)
- return ret;
-
- ret = clk_set_rate(cpu_clk, freq);
- if (ret != 0) {
- printk(KERN_DEBUG "cannot set CPU clock rate\n");
- return ret;
- }
-
- return ret;
-}
-
-static int mxc_verify_speed(struct cpufreq_policy *policy)
-{
- if (policy->cpu != 0)
- return -EINVAL;
-
- return cpufreq_frequency_table_verify(policy, imx_freq_table);
-}
-
-static unsigned int mxc_get_speed(unsigned int cpu)
-{
- if (cpu)
- return 0;
-
- return clk_get_rate(cpu_clk) / 1000;
-}
-
-static int mxc_set_target(struct cpufreq_policy *policy,
- unsigned int target_freq, unsigned int relation)
-{
- struct cpufreq_freqs freqs;
- int freq_Hz;
- int ret = 0;
- unsigned int index;
-
- cpufreq_frequency_table_target(policy, imx_freq_table,
- target_freq, relation, &index);
- freq_Hz = imx_freq_table[index].frequency * 1000;
-
- freqs.old = clk_get_rate(cpu_clk) / 1000;
- freqs.new = freq_Hz / 1000;
- freqs.cpu = 0;
- freqs.flags = 0;
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
- ret = set_cpu_freq(freq_Hz);
-
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
- return ret;
-}
-
-static int mxc_cpufreq_init(struct cpufreq_policy *policy)
-{
- int ret;
- int i;
-
- printk(KERN_INFO "i.MXC CPU frequency driver\n");
-
- if (policy->cpu != 0)
- return -EINVAL;
-
- if (!get_cpu_op)
- return -EINVAL;
-
- cpu_clk = clk_get(NULL, "cpu_clk");
- if (IS_ERR(cpu_clk)) {
- printk(KERN_ERR "%s: failed to get cpu clock\n", __func__);
- return PTR_ERR(cpu_clk);
- }
-
- cpu_op_tbl = get_cpu_op(&cpu_op_nr);
-
- cpu_freq_khz_min = cpu_op_tbl[0].cpu_rate / 1000;
- cpu_freq_khz_max = cpu_op_tbl[0].cpu_rate / 1000;
-
- imx_freq_table = kmalloc(
- sizeof(struct cpufreq_frequency_table) * (cpu_op_nr + 1),
- GFP_KERNEL);
- if (!imx_freq_table) {
- ret = -ENOMEM;
- goto err1;
- }
-
- for (i = 0; i < cpu_op_nr; i++) {
- imx_freq_table[i].index = i;
- imx_freq_table[i].frequency = cpu_op_tbl[i].cpu_rate / 1000;
-
- if ((cpu_op_tbl[i].cpu_rate / 1000) < cpu_freq_khz_min)
- cpu_freq_khz_min = cpu_op_tbl[i].cpu_rate / 1000;
-
- if ((cpu_op_tbl[i].cpu_rate / 1000) > cpu_freq_khz_max)
- cpu_freq_khz_max = cpu_op_tbl[i].cpu_rate / 1000;
- }
-
- imx_freq_table[i].index = i;
- imx_freq_table[i].frequency = CPUFREQ_TABLE_END;
-
- policy->cur = clk_get_rate(cpu_clk) / 1000;
- policy->min = policy->cpuinfo.min_freq = cpu_freq_khz_min;
- policy->max = policy->cpuinfo.max_freq = cpu_freq_khz_max;
-
- /* Manual states, that PLL stabilizes in two CLK32 periods */
- policy->cpuinfo.transition_latency = 2 * NANOSECOND / CLK32_FREQ;
-
- ret = cpufreq_frequency_table_cpuinfo(policy, imx_freq_table);
-
- if (ret < 0) {
- printk(KERN_ERR "%s: failed to register i.MXC CPUfreq with error code %d\n",
- __func__, ret);
- goto err;
- }
-
- cpufreq_frequency_table_get_attr(imx_freq_table, policy->cpu);
- return 0;
-err:
- kfree(imx_freq_table);
-err1:
- clk_put(cpu_clk);
- return ret;
-}
-
-static int mxc_cpufreq_exit(struct cpufreq_policy *policy)
-{
- cpufreq_frequency_table_put_attr(policy->cpu);
-
- set_cpu_freq(cpu_freq_khz_max * 1000);
- clk_put(cpu_clk);
- kfree(imx_freq_table);
- return 0;
-}
-
-static struct cpufreq_driver mxc_driver = {
- .flags = CPUFREQ_STICKY,
- .verify = mxc_verify_speed,
- .target = mxc_set_target,
- .get = mxc_get_speed,
- .init = mxc_cpufreq_init,
- .exit = mxc_cpufreq_exit,
- .name = "imx",
-};
-
-static int mxc_cpufreq_driver_init(void)
-{
- return cpufreq_register_driver(&mxc_driver);
-}
-
-static void mxc_cpufreq_driver_exit(void)
-{
- cpufreq_unregister_driver(&mxc_driver);
-}
-
-module_init(mxc_cpufreq_driver_init);
-module_exit(mxc_cpufreq_driver_exit);
-
-MODULE_AUTHOR("Freescale Semiconductor Inc. Yong Shen <yong.shen at linaro.org>");
-MODULE_DESCRIPTION("CPUfreq driver for i.MX");
-MODULE_LICENSE("GPL");
diff --git a/arch/arm/mach-imx/mach-cpuimx51sd.c b/arch/arm/mach-imx/mach-cpuimx51sd.c
index 9b73932..9b5ddf5 100644
--- a/arch/arm/mach-imx/mach-cpuimx51sd.c
+++ b/arch/arm/mach-imx/mach-cpuimx51sd.c
@@ -33,7 +33,6 @@
#include "common.h"
#include "devices-imx51.h"
-#include "cpu_op-mx51.h"
#include "eukrea-baseboards.h"
#include "hardware.h"
#include "iomux-mx51.h"
@@ -285,10 +284,6 @@ static void __init eukrea_cpuimx51sd_init(void)
mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx51sd_pads,
ARRAY_SIZE(eukrea_cpuimx51sd_pads));
-#if defined(CONFIG_CPU_FREQ_IMX)
- get_cpu_op = mx51_get_cpu_op;
-#endif
-
imx51_add_imx_uart(0, &uart_pdata);
imx51_add_mxc_nand(&eukrea_cpuimx51sd_nand_board_info);
imx51_add_imx2_wdt(0);
diff --git a/arch/arm/mach-imx/mach-mx51_babbage.c b/arch/arm/mach-imx/mach-mx51_babbage.c
index 6c4d7fe..f3d264a 100644
--- a/arch/arm/mach-imx/mach-mx51_babbage.c
+++ b/arch/arm/mach-imx/mach-mx51_babbage.c
@@ -27,7 +27,6 @@
#include "common.h"
#include "devices-imx51.h"
-#include "cpu_op-mx51.h"
#include "hardware.h"
#include "iomux-mx51.h"
@@ -371,9 +370,6 @@ static void __init mx51_babbage_init(void)
imx51_soc_init();
-#if defined(CONFIG_CPU_FREQ_IMX)
- get_cpu_op = mx51_get_cpu_op;
-#endif
imx51_babbage_common_init();
imx51_add_imx_uart(0, &uart_pdata);
--
1.8.1.5
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