Lines Matching +full:clk +full:- +full:out +full:- +full:frequency
1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2013 - 2019 ARM Ltd.
14 #include <linux/clk.h>
51 static struct clk *clk[MAX_CLUSTERS]; variable
56 static unsigned int clk_little_max; /* Maximum clock frequency (Little) */
93 u32 rate = clk_get_rate(clk[cur_cluster]) / 1000; in clk_get_cpu_rate()
130 ret = clk_set_rate(clk[new_cluster], new_rate * 1000); in ve_spc_cpufreq_set_rate()
136 * current design of the clk core layer. To work around this in ve_spc_cpufreq_set_rate()
138 * correct. This needs to be removed once clk core is fixed. in ve_spc_cpufreq_set_rate()
140 if (clk_get_rate(clk[new_cluster]) != new_rate * 1000) in ve_spc_cpufreq_set_rate()
141 ret = -EIO; in ve_spc_cpufreq_set_rate()
169 clk_set_rate(clk[old_cluster], new_rate * 1000)) { in ve_spc_cpufreq_set_rate()
179 /* Set clock frequency */
183 u32 cpu = policy->cpu, cur_cluster, new_cluster, actual_cluster; in ve_spc_cpufreq_set_target()
189 freqs_new = freq_table[cur_cluster][index].frequency; in ve_spc_cpufreq_set_target()
207 for (count = 0; table[count].frequency != CPUFREQ_TABLE_END; count++) in get_table_count()
213 /* get the minimum frequency in the cpufreq_frequency_table */
220 if (pos->frequency < min_freq) in get_table_min()
221 min_freq = pos->frequency; in get_table_min()
225 /* get the maximum frequency in the cpufreq_frequency_table */
232 if (pos->frequency > max_freq) in get_table_max()
233 max_freq = pos->frequency; in get_table_max()
243 if (table[count].frequency == freq) in search_frequency()
260 return -ENOMEM; in merge_cluster_tables()
265 for (i = MAX_CLUSTERS - 1; i >= 0; i--, count = k) { in merge_cluster_tables()
266 for (j = 0; freq_table[i][j].frequency != CPUFREQ_TABLE_END; in merge_cluster_tables()
269 search_frequency(table, count, freq_table[i][j].frequency)) in merge_cluster_tables()
271 table[k++].frequency = in merge_cluster_tables()
272 VIRT_FREQ(i, freq_table[i][j].frequency); in merge_cluster_tables()
277 table[k].frequency = CPUFREQ_TABLE_END; in merge_cluster_tables()
285 u32 cluster = raw_cpu_to_cluster(cpu_dev->id); in _put_cluster_clk_and_freq_table()
290 clk_put(clk[cluster]); in _put_cluster_clk_and_freq_table()
297 u32 cluster = cpu_to_cluster(cpu_dev->id); in put_cluster_clk_and_freq_table()
322 u32 cluster = raw_cpu_to_cluster(cpu_dev->id); in _get_cluster_clk_and_freq_table()
330 * so just check if the OPP count is non-zero in _get_cluster_clk_and_freq_table()
334 goto out; in _get_cluster_clk_and_freq_table()
338 goto out; in _get_cluster_clk_and_freq_table()
340 clk[cluster] = clk_get(cpu_dev, NULL); in _get_cluster_clk_and_freq_table()
341 if (!IS_ERR(clk[cluster])) in _get_cluster_clk_and_freq_table()
344 dev_err(cpu_dev, "%s: Failed to get clk for cpu: %d, cluster: %d\n", in _get_cluster_clk_and_freq_table()
345 __func__, cpu_dev->id, cluster); in _get_cluster_clk_and_freq_table()
346 ret = PTR_ERR(clk[cluster]); in _get_cluster_clk_and_freq_table()
349 out: in _get_cluster_clk_and_freq_table()
358 u32 cluster = cpu_to_cluster(cpu_dev->id); in get_cluster_clk_and_freq_table()
379 return -ENODEV; in get_cluster_clk_and_freq_table()
402 return -ENODEV; in get_cluster_clk_and_freq_table()
412 /* Per-CPU initialization */
415 u32 cur_cluster = cpu_to_cluster(policy->cpu); in ve_spc_cpufreq_init()
419 cpu_dev = get_cpu_device(policy->cpu); in ve_spc_cpufreq_init()
422 policy->cpu); in ve_spc_cpufreq_init()
423 return -ENODEV; in ve_spc_cpufreq_init()
429 dev_pm_opp_get_sharing_cpus(cpu_dev, policy->cpus); in ve_spc_cpufreq_init()
431 for_each_cpu(cpu, policy->cpus) in ve_spc_cpufreq_init()
435 per_cpu(physical_cluster, policy->cpu) = A15_CLUSTER; in ve_spc_cpufreq_init()
438 ret = get_cluster_clk_and_freq_table(cpu_dev, policy->cpus); in ve_spc_cpufreq_init()
442 policy->freq_table = freq_table[cur_cluster]; in ve_spc_cpufreq_init()
443 policy->cpuinfo.transition_latency = 1000000; /* 1 ms */ in ve_spc_cpufreq_init()
445 dev_pm_opp_of_register_em(cpu_dev, policy->cpus); in ve_spc_cpufreq_init()
448 per_cpu(cpu_last_req_freq, policy->cpu) = in ve_spc_cpufreq_init()
449 clk_get_cpu_rate(policy->cpu); in ve_spc_cpufreq_init()
451 dev_info(cpu_dev, "%s: CPU %d initialized\n", __func__, policy->cpu); in ve_spc_cpufreq_init()
458 int cur_cluster = cpu_to_cluster(policy->cpu); in ve_spc_cpufreq_exit()
465 cpu_dev = get_cpu_device(policy->cpu); in ve_spc_cpufreq_exit()
468 policy->cpu); in ve_spc_cpufreq_exit()
469 return -ENODEV; in ve_spc_cpufreq_exit()
472 put_cluster_clk_and_freq_table(cpu_dev, policy->related_cpus); in ve_spc_cpufreq_exit()
478 int cur_cluster = cpu_to_cluster(policy->cpu); in ve_spc_cpufreq_ready()
488 .name = "vexpress-spc",
580 pr_info("%s: Un-registered platform driver: %s\n", __func__, in ve_spc_cpufreq_remove()
587 .name = "vexpress-spc-cpufreq",