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authorViresh Kumar <viresh.kumar@linaro.org>2013-04-04 08:54:17 -0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-04-10 07:19:25 -0400
commit81c720c90e6fbda5a1f53f932035de899f27adb6 (patch)
tree04a21b626b16a0d39b9270ac89c831f28d8132ab /arch/avr32
parent59a2e613d07fbd592ff711c87458eabcf9c98902 (diff)
cpufreq: AVR32: move cpufreq driver to drivers/cpufreq
This patch moves cpufreq driver of AVR32 based at32ap platform to drivers/cpufreq. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch/avr32')
-rw-r--r--arch/avr32/Kconfig13
-rw-r--r--arch/avr32/configs/atngw100_defconfig2
-rw-r--r--arch/avr32/configs/atngw100_evklcd100_defconfig2
-rw-r--r--arch/avr32/configs/atngw100_evklcd101_defconfig2
-rw-r--r--arch/avr32/configs/atngw100_mrmt_defconfig2
-rw-r--r--arch/avr32/configs/atngw100mkii_defconfig2
-rw-r--r--arch/avr32/configs/atngw100mkii_evklcd100_defconfig2
-rw-r--r--arch/avr32/configs/atngw100mkii_evklcd101_defconfig2
-rw-r--r--arch/avr32/configs/atstk1002_defconfig2
-rw-r--r--arch/avr32/configs/atstk1003_defconfig2
-rw-r--r--arch/avr32/configs/atstk1004_defconfig2
-rw-r--r--arch/avr32/configs/atstk1006_defconfig2
-rw-r--r--arch/avr32/configs/favr-32_defconfig2
-rw-r--r--arch/avr32/configs/hammerhead_defconfig2
-rw-r--r--arch/avr32/configs/mimc200_defconfig2
-rw-r--r--arch/avr32/mach-at32ap/Makefile1
-rw-r--r--arch/avr32/mach-at32ap/cpufreq.c123
17 files changed, 14 insertions, 151 deletions
diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig
index c1a868d398bd..22c40308360b 100644
--- a/arch/avr32/Kconfig
+++ b/arch/avr32/Kconfig
@@ -250,20 +250,7 @@ config ARCH_SUSPEND_POSSIBLE
250 def_bool y 250 def_bool y
251 251
252menu "CPU Frequency scaling" 252menu "CPU Frequency scaling"
253
254source "drivers/cpufreq/Kconfig" 253source "drivers/cpufreq/Kconfig"
255
256config CPU_FREQ_AT32AP
257 bool "CPU frequency driver for AT32AP"
258 depends on CPU_FREQ && PLATFORM_AT32AP
259 default n
260 help
261 This enables the CPU frequency driver for AT32AP processors.
262
263 For details, take a look in <file:Documentation/cpu-freq>.
264
265 If in doubt, say N.
266
267endmenu 254endmenu
268 255
269endmenu 256endmenu
diff --git a/arch/avr32/configs/atngw100_defconfig b/arch/avr32/configs/atngw100_defconfig
index f4025db184ff..d5aff36ade92 100644
--- a/arch/avr32/configs/atngw100_defconfig
+++ b/arch/avr32/configs/atngw100_defconfig
@@ -26,7 +26,7 @@ CONFIG_CPU_FREQ=y
26# CONFIG_CPU_FREQ_STAT is not set 26# CONFIG_CPU_FREQ_STAT is not set
27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
28CONFIG_CPU_FREQ_GOV_USERSPACE=y 28CONFIG_CPU_FREQ_GOV_USERSPACE=y
29CONFIG_CPU_FREQ_AT32AP=y 29CONFIG_AVR32_AT32AP_CPUFREQ=y
30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
31CONFIG_NET=y 31CONFIG_NET=y
32CONFIG_PACKET=y 32CONFIG_PACKET=y
diff --git a/arch/avr32/configs/atngw100_evklcd100_defconfig b/arch/avr32/configs/atngw100_evklcd100_defconfig
index c76a49b9e9d0..4abcf435d599 100644
--- a/arch/avr32/configs/atngw100_evklcd100_defconfig
+++ b/arch/avr32/configs/atngw100_evklcd100_defconfig
@@ -28,7 +28,7 @@ CONFIG_CPU_FREQ=y
28# CONFIG_CPU_FREQ_STAT is not set 28# CONFIG_CPU_FREQ_STAT is not set
29CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 29CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
30CONFIG_CPU_FREQ_GOV_USERSPACE=y 30CONFIG_CPU_FREQ_GOV_USERSPACE=y
31CONFIG_CPU_FREQ_AT32AP=y 31CONFIG_AVR32_AT32AP_CPUFREQ=y
32CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 32CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
33CONFIG_NET=y 33CONFIG_NET=y
34CONFIG_PACKET=y 34CONFIG_PACKET=y
diff --git a/arch/avr32/configs/atngw100_evklcd101_defconfig b/arch/avr32/configs/atngw100_evklcd101_defconfig
index 2d8ab089a64e..18f3fa0470ff 100644
--- a/arch/avr32/configs/atngw100_evklcd101_defconfig
+++ b/arch/avr32/configs/atngw100_evklcd101_defconfig
@@ -27,7 +27,7 @@ CONFIG_CPU_FREQ=y
27# CONFIG_CPU_FREQ_STAT is not set 27# CONFIG_CPU_FREQ_STAT is not set
28CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 28CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
29CONFIG_CPU_FREQ_GOV_USERSPACE=y 29CONFIG_CPU_FREQ_GOV_USERSPACE=y
30CONFIG_CPU_FREQ_AT32AP=y 30CONFIG_AVR32_AT32AP_CPUFREQ=y
31CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 31CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
32CONFIG_NET=y 32CONFIG_NET=y
33CONFIG_PACKET=y 33CONFIG_PACKET=y
diff --git a/arch/avr32/configs/atngw100_mrmt_defconfig b/arch/avr32/configs/atngw100_mrmt_defconfig
index b189e0cab04b..06e389cfcd12 100644
--- a/arch/avr32/configs/atngw100_mrmt_defconfig
+++ b/arch/avr32/configs/atngw100_mrmt_defconfig
@@ -23,7 +23,7 @@ CONFIG_CPU_FREQ=y
23CONFIG_CPU_FREQ_GOV_POWERSAVE=y 23CONFIG_CPU_FREQ_GOV_POWERSAVE=y
24CONFIG_CPU_FREQ_GOV_USERSPACE=y 24CONFIG_CPU_FREQ_GOV_USERSPACE=y
25CONFIG_CPU_FREQ_GOV_ONDEMAND=y 25CONFIG_CPU_FREQ_GOV_ONDEMAND=y
26CONFIG_CPU_FREQ_AT32AP=y 26CONFIG_AVR32_AT32AP_CPUFREQ=y
27CONFIG_NET=y 27CONFIG_NET=y
28CONFIG_PACKET=y 28CONFIG_PACKET=y
29CONFIG_UNIX=y 29CONFIG_UNIX=y
diff --git a/arch/avr32/configs/atngw100mkii_defconfig b/arch/avr32/configs/atngw100mkii_defconfig
index 2e4de42a53c4..2518a1368d7c 100644
--- a/arch/avr32/configs/atngw100mkii_defconfig
+++ b/arch/avr32/configs/atngw100mkii_defconfig
@@ -26,7 +26,7 @@ CONFIG_CPU_FREQ=y
26# CONFIG_CPU_FREQ_STAT is not set 26# CONFIG_CPU_FREQ_STAT is not set
27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
28CONFIG_CPU_FREQ_GOV_USERSPACE=y 28CONFIG_CPU_FREQ_GOV_USERSPACE=y
29CONFIG_CPU_FREQ_AT32AP=y 29CONFIG_AVR32_AT32AP_CPUFREQ=y
30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
31CONFIG_NET=y 31CONFIG_NET=y
32CONFIG_PACKET=y 32CONFIG_PACKET=y
diff --git a/arch/avr32/configs/atngw100mkii_evklcd100_defconfig b/arch/avr32/configs/atngw100mkii_evklcd100_defconfig
index fad3cd22dfd3..245ef6bd0fa6 100644
--- a/arch/avr32/configs/atngw100mkii_evklcd100_defconfig
+++ b/arch/avr32/configs/atngw100mkii_evklcd100_defconfig
@@ -29,7 +29,7 @@ CONFIG_CPU_FREQ=y
29# CONFIG_CPU_FREQ_STAT is not set 29# CONFIG_CPU_FREQ_STAT is not set
30CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 30CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
31CONFIG_CPU_FREQ_GOV_USERSPACE=y 31CONFIG_CPU_FREQ_GOV_USERSPACE=y
32CONFIG_CPU_FREQ_AT32AP=y 32CONFIG_AVR32_AT32AP_CPUFREQ=y
33CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 33CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
34CONFIG_NET=y 34CONFIG_NET=y
35CONFIG_PACKET=y 35CONFIG_PACKET=y
diff --git a/arch/avr32/configs/atngw100mkii_evklcd101_defconfig b/arch/avr32/configs/atngw100mkii_evklcd101_defconfig
index 29986230aaa5..fa6cbac6e418 100644
--- a/arch/avr32/configs/atngw100mkii_evklcd101_defconfig
+++ b/arch/avr32/configs/atngw100mkii_evklcd101_defconfig
@@ -28,7 +28,7 @@ CONFIG_CPU_FREQ=y
28# CONFIG_CPU_FREQ_STAT is not set 28# CONFIG_CPU_FREQ_STAT is not set
29CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 29CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
30CONFIG_CPU_FREQ_GOV_USERSPACE=y 30CONFIG_CPU_FREQ_GOV_USERSPACE=y
31CONFIG_CPU_FREQ_AT32AP=y 31CONFIG_AVR32_AT32AP_CPUFREQ=y
32CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 32CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
33CONFIG_NET=y 33CONFIG_NET=y
34CONFIG_PACKET=y 34CONFIG_PACKET=y
diff --git a/arch/avr32/configs/atstk1002_defconfig b/arch/avr32/configs/atstk1002_defconfig
index a582465e1cef..bbd5131021a5 100644
--- a/arch/avr32/configs/atstk1002_defconfig
+++ b/arch/avr32/configs/atstk1002_defconfig
@@ -25,7 +25,7 @@ CONFIG_CPU_FREQ=y
25# CONFIG_CPU_FREQ_STAT is not set 25# CONFIG_CPU_FREQ_STAT is not set
26CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 26CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
27CONFIG_CPU_FREQ_GOV_USERSPACE=y 27CONFIG_CPU_FREQ_GOV_USERSPACE=y
28CONFIG_CPU_FREQ_AT32AP=y 28CONFIG_AVR32_AT32AP_CPUFREQ=y
29CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 29CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
30CONFIG_NET=y 30CONFIG_NET=y
31CONFIG_PACKET=y 31CONFIG_PACKET=y
diff --git a/arch/avr32/configs/atstk1003_defconfig b/arch/avr32/configs/atstk1003_defconfig
index 57a79df2ce5d..c1cd726f9012 100644
--- a/arch/avr32/configs/atstk1003_defconfig
+++ b/arch/avr32/configs/atstk1003_defconfig
@@ -26,7 +26,7 @@ CONFIG_CPU_FREQ=y
26# CONFIG_CPU_FREQ_STAT is not set 26# CONFIG_CPU_FREQ_STAT is not set
27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
28CONFIG_CPU_FREQ_GOV_USERSPACE=y 28CONFIG_CPU_FREQ_GOV_USERSPACE=y
29CONFIG_CPU_FREQ_AT32AP=y 29CONFIG_AVR32_AT32AP_CPUFREQ=y
30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
31CONFIG_NET=y 31CONFIG_NET=y
32CONFIG_PACKET=y 32CONFIG_PACKET=y
diff --git a/arch/avr32/configs/atstk1004_defconfig b/arch/avr32/configs/atstk1004_defconfig
index 1a49bd8c6340..754ae56b2767 100644
--- a/arch/avr32/configs/atstk1004_defconfig
+++ b/arch/avr32/configs/atstk1004_defconfig
@@ -26,7 +26,7 @@ CONFIG_CPU_FREQ=y
26# CONFIG_CPU_FREQ_STAT is not set 26# CONFIG_CPU_FREQ_STAT is not set
27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
28CONFIG_CPU_FREQ_GOV_USERSPACE=y 28CONFIG_CPU_FREQ_GOV_USERSPACE=y
29CONFIG_CPU_FREQ_AT32AP=y 29CONFIG_AVR32_AT32AP_CPUFREQ=y
30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
31CONFIG_NET=y 31CONFIG_NET=y
32CONFIG_PACKET=y 32CONFIG_PACKET=y
diff --git a/arch/avr32/configs/atstk1006_defconfig b/arch/avr32/configs/atstk1006_defconfig
index 206a1b67f763..58589d8cc0ac 100644
--- a/arch/avr32/configs/atstk1006_defconfig
+++ b/arch/avr32/configs/atstk1006_defconfig
@@ -26,7 +26,7 @@ CONFIG_CPU_FREQ=y
26# CONFIG_CPU_FREQ_STAT is not set 26# CONFIG_CPU_FREQ_STAT is not set
27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 27CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
28CONFIG_CPU_FREQ_GOV_USERSPACE=y 28CONFIG_CPU_FREQ_GOV_USERSPACE=y
29CONFIG_CPU_FREQ_AT32AP=y 29CONFIG_AVR32_AT32AP_CPUFREQ=y
30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y 30CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
31CONFIG_NET=y 31CONFIG_NET=y
32CONFIG_PACKET=y 32CONFIG_PACKET=y
diff --git a/arch/avr32/configs/favr-32_defconfig b/arch/avr32/configs/favr-32_defconfig
index 0421498d666b..57788a42ff83 100644
--- a/arch/avr32/configs/favr-32_defconfig
+++ b/arch/avr32/configs/favr-32_defconfig
@@ -27,7 +27,7 @@ CONFIG_CPU_FREQ=y
27# CONFIG_CPU_FREQ_STAT is not set 27# CONFIG_CPU_FREQ_STAT is not set
28CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 28CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
29CONFIG_CPU_FREQ_GOV_USERSPACE=y 29CONFIG_CPU_FREQ_GOV_USERSPACE=y
30CONFIG_CPU_FREQ_AT32AP=y 30CONFIG_AVR32_AT32AP_CPUFREQ=y
31CONFIG_NET=y 31CONFIG_NET=y
32CONFIG_PACKET=y 32CONFIG_PACKET=y
33CONFIG_UNIX=y 33CONFIG_UNIX=y
diff --git a/arch/avr32/configs/hammerhead_defconfig b/arch/avr32/configs/hammerhead_defconfig
index 82f24eb251bd..ba7c31e269cb 100644
--- a/arch/avr32/configs/hammerhead_defconfig
+++ b/arch/avr32/configs/hammerhead_defconfig
@@ -31,7 +31,7 @@ CONFIG_CPU_FREQ=y
31# CONFIG_CPU_FREQ_STAT is not set 31# CONFIG_CPU_FREQ_STAT is not set
32CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 32CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
33CONFIG_CPU_FREQ_GOV_USERSPACE=y 33CONFIG_CPU_FREQ_GOV_USERSPACE=y
34CONFIG_CPU_FREQ_AT32AP=y 34CONFIG_AVR32_AT32AP_CPUFREQ=y
35CONFIG_NET=y 35CONFIG_NET=y
36CONFIG_PACKET=y 36CONFIG_PACKET=y
37CONFIG_UNIX=y 37CONFIG_UNIX=y
diff --git a/arch/avr32/configs/mimc200_defconfig b/arch/avr32/configs/mimc200_defconfig
index 1bee51f22154..0a8bfdc420e0 100644
--- a/arch/avr32/configs/mimc200_defconfig
+++ b/arch/avr32/configs/mimc200_defconfig
@@ -24,7 +24,7 @@ CONFIG_CPU_FREQ=y
24# CONFIG_CPU_FREQ_STAT is not set 24# CONFIG_CPU_FREQ_STAT is not set
25CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 25CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
26CONFIG_CPU_FREQ_GOV_USERSPACE=y 26CONFIG_CPU_FREQ_GOV_USERSPACE=y
27CONFIG_CPU_FREQ_AT32AP=y 27CONFIG_AVR32_AT32AP_CPUFREQ=y
28CONFIG_NET=y 28CONFIG_NET=y
29CONFIG_PACKET=y 29CONFIG_PACKET=y
30CONFIG_UNIX=y 30CONFIG_UNIX=y
diff --git a/arch/avr32/mach-at32ap/Makefile b/arch/avr32/mach-at32ap/Makefile
index 514c9a9b009a..fc09ec4bc725 100644
--- a/arch/avr32/mach-at32ap/Makefile
+++ b/arch/avr32/mach-at32ap/Makefile
@@ -1,7 +1,6 @@
1obj-y += pdc.o clock.o intc.o extint.o pio.o hsmc.o 1obj-y += pdc.o clock.o intc.o extint.o pio.o hsmc.o
2obj-y += hmatrix.o 2obj-y += hmatrix.o
3obj-$(CONFIG_CPU_AT32AP700X) += at32ap700x.o pm-at32ap700x.o 3obj-$(CONFIG_CPU_AT32AP700X) += at32ap700x.o pm-at32ap700x.o
4obj-$(CONFIG_CPU_FREQ_AT32AP) += cpufreq.o
5obj-$(CONFIG_PM) += pm.o 4obj-$(CONFIG_PM) += pm.o
6 5
7ifeq ($(CONFIG_PM_DEBUG),y) 6ifeq ($(CONFIG_PM_DEBUG),y)
diff --git a/arch/avr32/mach-at32ap/cpufreq.c b/arch/avr32/mach-at32ap/cpufreq.c
deleted file mode 100644
index 654488723cb5..000000000000
--- a/arch/avr32/mach-at32ap/cpufreq.c
+++ /dev/null
@@ -1,123 +0,0 @@
1/*
2 * Copyright (C) 2004-2007 Atmel Corporation
3 *
4 * Based on MIPS implementation arch/mips/kernel/time.c
5 * Copyright 2001 MontaVista Software Inc.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12/*#define DEBUG*/
13
14#include <linux/kernel.h>
15#include <linux/types.h>
16#include <linux/init.h>
17#include <linux/cpufreq.h>
18#include <linux/io.h>
19#include <linux/clk.h>
20#include <linux/err.h>
21#include <linux/export.h>
22
23static struct clk *cpuclk;
24
25static int at32_verify_speed(struct cpufreq_policy *policy)
26{
27 if (policy->cpu != 0)
28 return -EINVAL;
29
30 cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
31 policy->cpuinfo.max_freq);
32 return 0;
33}
34
35static unsigned int at32_get_speed(unsigned int cpu)
36{
37 /* No SMP support */
38 if (cpu)
39 return 0;
40 return (unsigned int)((clk_get_rate(cpuclk) + 500) / 1000);
41}
42
43static unsigned int ref_freq;
44static unsigned long loops_per_jiffy_ref;
45
46static int at32_set_target(struct cpufreq_policy *policy,
47 unsigned int target_freq,
48 unsigned int relation)
49{
50 struct cpufreq_freqs freqs;
51 long freq;
52
53 /* Convert target_freq from kHz to Hz */
54 freq = clk_round_rate(cpuclk, target_freq * 1000);
55
56 /* Check if policy->min <= new_freq <= policy->max */
57 if(freq < (policy->min * 1000) || freq > (policy->max * 1000))
58 return -EINVAL;
59
60 pr_debug("cpufreq: requested frequency %u Hz\n", target_freq * 1000);
61
62 freqs.old = at32_get_speed(0);
63 freqs.new = (freq + 500) / 1000;
64 freqs.flags = 0;
65
66 if (!ref_freq) {
67 ref_freq = freqs.old;
68 loops_per_jiffy_ref = boot_cpu_data.loops_per_jiffy;
69 }
70
71 cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
72 if (freqs.old < freqs.new)
73 boot_cpu_data.loops_per_jiffy = cpufreq_scale(
74 loops_per_jiffy_ref, ref_freq, freqs.new);
75 clk_set_rate(cpuclk, freq);
76 if (freqs.new < freqs.old)
77 boot_cpu_data.loops_per_jiffy = cpufreq_scale(
78 loops_per_jiffy_ref, ref_freq, freqs.new);
79 cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
80
81 pr_debug("cpufreq: set frequency %lu Hz\n", freq);
82
83 return 0;
84}
85
86static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy)
87{
88 if (policy->cpu != 0)
89 return -EINVAL;
90
91 cpuclk = clk_get(NULL, "cpu");
92 if (IS_ERR(cpuclk)) {
93 pr_debug("cpufreq: could not get CPU clk\n");
94 return PTR_ERR(cpuclk);
95 }
96
97 policy->cpuinfo.min_freq = (clk_round_rate(cpuclk, 1) + 500) / 1000;
98 policy->cpuinfo.max_freq = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
99 policy->cpuinfo.transition_latency = 0;
100 policy->cur = at32_get_speed(0);
101 policy->min = policy->cpuinfo.min_freq;
102 policy->max = policy->cpuinfo.max_freq;
103
104 printk("cpufreq: AT32AP CPU frequency driver\n");
105
106 return 0;
107}
108
109static struct cpufreq_driver at32_driver = {
110 .name = "at32ap",
111 .owner = THIS_MODULE,
112 .init = at32_cpufreq_driver_init,
113 .verify = at32_verify_speed,
114 .target = at32_set_target,
115 .get = at32_get_speed,
116 .flags = CPUFREQ_STICKY,
117};
118
119static int __init at32_cpufreq_init(void)
120{
121 return cpufreq_register_driver(&at32_driver);
122}
123late_initcall(at32_cpufreq_init);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-22 23:57:33 -0500