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authorArnd Bergmann <arnd@arndb.de>2018-03-09 11:41:49 -0500
committerArnd Bergmann <arnd@arndb.de>2018-03-26 09:56:52 -0400
commit9a1651dcc123e8650d8da0b31fd6dc94940a935d (patch)
tree29fa5ca2f46d5c2fa9ccf4b24fb80e1c2adff956
parent9a3daf58f98bae1d40a3629a8e59c98589801a11 (diff)
cpufreq: remove cris specific drivers
The cris architecture is getting removed, including the artpec3 and etraxfs SoCs, so these cpufreq drivers are now unused. Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat
-rw-r--r--drivers/cpufreq/Makefile2
-rw-r--r--drivers/cpufreq/cris-artpec3-cpufreq.c93
-rw-r--r--drivers/cpufreq/cris-etraxfs-cpufreq.c92
3 files changed, 0 insertions, 187 deletions
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index 43e42542aa19..b2cbdc016c77 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -101,8 +101,6 @@ obj-$(CONFIG_POWERNV_CPUFREQ) += powernv-cpufreq.o
101################################################################################## 101##################################################################################
102# Other platform drivers 102# Other platform drivers
103obj-$(CONFIG_BMIPS_CPUFREQ) += bmips-cpufreq.o 103obj-$(CONFIG_BMIPS_CPUFREQ) += bmips-cpufreq.o
104obj-$(CONFIG_CRIS_MACH_ARTPEC3) += cris-artpec3-cpufreq.o
105obj-$(CONFIG_ETRAXFS) += cris-etraxfs-cpufreq.o
106obj-$(CONFIG_IA64_ACPI_CPUFREQ) += ia64-acpi-cpufreq.o 104obj-$(CONFIG_IA64_ACPI_CPUFREQ) += ia64-acpi-cpufreq.o
107obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o 105obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o
108obj-$(CONFIG_LOONGSON1_CPUFREQ) += loongson1-cpufreq.o 106obj-$(CONFIG_LOONGSON1_CPUFREQ) += loongson1-cpufreq.o
diff --git a/drivers/cpufreq/cris-artpec3-cpufreq.c b/drivers/cpufreq/cris-artpec3-cpufreq.c
deleted file mode 100644
index 455b4fb78cba..000000000000
--- a/drivers/cpufreq/cris-artpec3-cpufreq.c
+++ /dev/null
@@ -1,93 +0,0 @@
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/init.h>
3#include <linux/module.h>
4#include <linux/cpufreq.h>
5#include <hwregs/reg_map.h>
6#include <hwregs/reg_rdwr.h>
7#include <hwregs/clkgen_defs.h>
8#include <hwregs/ddr2_defs.h>
9
10static int
11cris_sdram_freq_notifier(struct notifier_block *nb, unsigned long val,
12 void *data);
13
14static struct notifier_block cris_sdram_freq_notifier_block = {
15 .notifier_call = cris_sdram_freq_notifier
16};
17
18static struct cpufreq_frequency_table cris_freq_table[] = {
19 {0, 0x01, 6000},
20 {0, 0x02, 200000},
21 {0, 0, CPUFREQ_TABLE_END},
22};
23
24static unsigned int cris_freq_get_cpu_frequency(unsigned int cpu)
25{
26 reg_clkgen_rw_clk_ctrl clk_ctrl;
27 clk_ctrl = REG_RD(clkgen, regi_clkgen, rw_clk_ctrl);
28 return clk_ctrl.pll ? 200000 : 6000;
29}
30
31static int cris_freq_target(struct cpufreq_policy *policy, unsigned int state)
32{
33 reg_clkgen_rw_clk_ctrl clk_ctrl;
34 clk_ctrl = REG_RD(clkgen, regi_clkgen, rw_clk_ctrl);
35
36 local_irq_disable();
37
38 /* Even though we may be SMP they will share the same clock
39 * so all settings are made on CPU0. */
40 if (cris_freq_table[state].frequency == 200000)
41 clk_ctrl.pll = 1;
42 else
43 clk_ctrl.pll = 0;
44 REG_WR(clkgen, regi_clkgen, rw_clk_ctrl, clk_ctrl);
45
46 local_irq_enable();
47
48 return 0;
49}
50
51static int cris_freq_cpu_init(struct cpufreq_policy *policy)
52{
53 return cpufreq_generic_init(policy, cris_freq_table, 1000000);
54}
55
56static struct cpufreq_driver cris_freq_driver = {
57 .get = cris_freq_get_cpu_frequency,
58 .verify = cpufreq_generic_frequency_table_verify,
59 .target_index = cris_freq_target,
60 .init = cris_freq_cpu_init,
61 .name = "cris_freq",
62 .attr = cpufreq_generic_attr,
63};
64
65static int __init cris_freq_init(void)
66{
67 int ret;
68 ret = cpufreq_register_driver(&cris_freq_driver);
69 cpufreq_register_notifier(&cris_sdram_freq_notifier_block,
70 CPUFREQ_TRANSITION_NOTIFIER);
71 return ret;
72}
73
74static int
75cris_sdram_freq_notifier(struct notifier_block *nb, unsigned long val,
76 void *data)
77{
78 int i;
79 struct cpufreq_freqs *freqs = data;
80 if (val == CPUFREQ_PRECHANGE) {
81 reg_ddr2_rw_cfg cfg =
82 REG_RD(ddr2, regi_ddr2_ctrl, rw_cfg);
83 cfg.ref_interval = (freqs->new == 200000 ? 1560 : 46);
84
85 if (freqs->new == 200000)
86 for (i = 0; i < 50000; i++);
87 REG_WR(bif_core, regi_bif_core, rw_sdram_timing, timing);
88 }
89 return 0;
90}
91
92
93module_init(cris_freq_init);
diff --git a/drivers/cpufreq/cris-etraxfs-cpufreq.c b/drivers/cpufreq/cris-etraxfs-cpufreq.c
deleted file mode 100644
index 4c4b5dd685e3..000000000000
--- a/drivers/cpufreq/cris-etraxfs-cpufreq.c
+++ /dev/null
@@ -1,92 +0,0 @@
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/init.h>
3#include <linux/module.h>
4#include <linux/cpufreq.h>
5#include <hwregs/reg_map.h>
6#include <arch/hwregs/reg_rdwr.h>
7#include <arch/hwregs/config_defs.h>
8#include <arch/hwregs/bif_core_defs.h>
9
10static int
11cris_sdram_freq_notifier(struct notifier_block *nb, unsigned long val,
12 void *data);
13
14static struct notifier_block cris_sdram_freq_notifier_block = {
15 .notifier_call = cris_sdram_freq_notifier
16};
17
18static struct cpufreq_frequency_table cris_freq_table[] = {
19 {0, 0x01, 6000},
20 {0, 0x02, 200000},
21 {0, 0, CPUFREQ_TABLE_END},
22};
23
24static unsigned int cris_freq_get_cpu_frequency(unsigned int cpu)
25{
26 reg_config_rw_clk_ctrl clk_ctrl;
27 clk_ctrl = REG_RD(config, regi_config, rw_clk_ctrl);
28 return clk_ctrl.pll ? 200000 : 6000;
29}
30
31static int cris_freq_target(struct cpufreq_policy *policy, unsigned int state)
32{
33 reg_config_rw_clk_ctrl clk_ctrl;
34 clk_ctrl = REG_RD(config, regi_config, rw_clk_ctrl);
35
36 local_irq_disable();
37
38 /* Even though we may be SMP they will share the same clock
39 * so all settings are made on CPU0. */
40 if (cris_freq_table[state].frequency == 200000)
41 clk_ctrl.pll = 1;
42 else
43 clk_ctrl.pll = 0;
44 REG_WR(config, regi_config, rw_clk_ctrl, clk_ctrl);
45
46 local_irq_enable();
47
48 return 0;
49}
50
51static int cris_freq_cpu_init(struct cpufreq_policy *policy)
52{
53 return cpufreq_generic_init(policy, cris_freq_table, 1000000);
54}
55
56static struct cpufreq_driver cris_freq_driver = {
57 .get = cris_freq_get_cpu_frequency,
58 .verify = cpufreq_generic_frequency_table_verify,
59 .target_index = cris_freq_target,
60 .init = cris_freq_cpu_init,
61 .name = "cris_freq",
62 .attr = cpufreq_generic_attr,
63};
64
65static int __init cris_freq_init(void)
66{
67 int ret;
68 ret = cpufreq_register_driver(&cris_freq_driver);
69 cpufreq_register_notifier(&cris_sdram_freq_notifier_block,
70 CPUFREQ_TRANSITION_NOTIFIER);
71 return ret;
72}
73
74static int
75cris_sdram_freq_notifier(struct notifier_block *nb, unsigned long val,
76 void *data)
77{
78 int i;
79 struct cpufreq_freqs *freqs = data;
80 if (val == CPUFREQ_PRECHANGE) {
81 reg_bif_core_rw_sdram_timing timing =
82 REG_RD(bif_core, regi_bif_core, rw_sdram_timing);
83 timing.cpd = (freqs->new == 200000 ? 0 : 1);
84
85 if (freqs->new == 200000)
86 for (i = 0; i < 50000; i++) ;
87 REG_WR(bif_core, regi_bif_core, rw_sdram_timing, timing);
88 }
89 return 0;
90}
91
92module_init(cris_freq_init);
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-27 14:06:14 -0400