1 files changed, 0 insertions, 380 deletions
diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c
deleted file mode 100644
index 3cae4529f959..000000000000
--- a/drivers/cpufreq/ppc-corenet-cpufreq.c
+++ /dev/null
@@ -1,380 +0,0 @@
-/*
- * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * CPU Frequency Scaling driver for Freescale PowerPC corenet SoCs.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
-
-#include <linux/clk.h>
-#include <linux/cpufreq.h>
-#include <linux/errno.h>
-#include <sysdev/fsl_soc.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-#include <linux/smp.h>
-
-/**
- * struct cpu_data - per CPU data struct
- * @clk: the clk of CPU
- * @parent: the parent node of cpu clock
- * @table: frequency table
- */
-struct cpu_data {
-	struct clk *clk;
-	struct device_node *parent;
-	struct cpufreq_frequency_table *table;
-};
-
-/**
- * struct soc_data - SoC specific data
- * @freq_mask: mask the disallowed frequencies
- * @flag: unique flags
- */
-struct soc_data {
-	u32 freq_mask[4];
-	u32 flag;
-};
-
-#define FREQ_MASK	1
-/* see hardware specification for the allowed frqeuencies */
-static const struct soc_data sdata[] = {
-	{ /* used by p2041 and p3041 */
-		.freq_mask = {0x8, 0x8, 0x2, 0x2},
-		.flag = FREQ_MASK,
-	},
-	{ /* used by p5020 */
-		.freq_mask = {0x8, 0x2},
-		.flag = FREQ_MASK,
-	},
-	{ /* used by p4080, p5040 */
-		.freq_mask = {0},
-		.flag = 0,
-	},
-};
-
-/*
- * the minimum allowed core frequency, in Hz
- * for chassis v1.0, >= platform frequency
- * for chassis v2.0, >= platform frequency / 2
- */
-static u32 min_cpufreq;
-static const u32 *fmask;
-
-/* serialize frequency changes  */
-static DEFINE_MUTEX(cpufreq_lock);
-static DEFINE_PER_CPU(struct cpu_data *, cpu_data);
-
-/* cpumask in a cluster */
-static DEFINE_PER_CPU(cpumask_var_t, cpu_mask);
-
-#ifndef CONFIG_SMP
-static inline const struct cpumask *cpu_core_mask(int cpu)
-{
-	return cpumask_of(0);
-}
-#endif
-
-static unsigned int corenet_cpufreq_get_speed(unsigned int cpu)
-{
-	struct cpu_data *data = per_cpu(cpu_data, cpu);
-
-	return clk_get_rate(data->clk) / 1000;
-}
-
-/* reduce the duplicated frequencies in frequency table */
-static void freq_table_redup(struct cpufreq_frequency_table *freq_table,
-		int count)
-{
-	int i, j;
-
-	for (i = 1; i < count; i++) {
-		for (j = 0; j < i; j++) {
-			if (freq_table[j].frequency == CPUFREQ_ENTRY_INVALID ||
-					freq_table[j].frequency !=
-					freq_table[i].frequency)
-				continue;
-
-			freq_table[i].frequency = CPUFREQ_ENTRY_INVALID;
-			break;
-		}
-	}
-}
-
-/* sort the frequencies in frequency table in descenting order */
-static void freq_table_sort(struct cpufreq_frequency_table *freq_table,
-		int count)
-{
-	int i, j, ind;
-	unsigned int freq, max_freq;
-	struct cpufreq_frequency_table table;
-	for (i = 0; i < count - 1; i++) {
-		max_freq = freq_table[i].frequency;
-		ind = i;
-		for (j = i + 1; j < count; j++) {
-			freq = freq_table[j].frequency;
-			if (freq == CPUFREQ_ENTRY_INVALID ||
-					freq <= max_freq)
-				continue;
-			ind = j;
-			max_freq = freq;
-		}
-
-		if (ind != i) {
-			/* exchange the frequencies */
-			table.driver_data = freq_table[i].driver_data;
-			table.frequency = freq_table[i].frequency;
-			freq_table[i].driver_data = freq_table[ind].driver_data;
-			freq_table[i].frequency = freq_table[ind].frequency;
-			freq_table[ind].driver_data = table.driver_data;
-			freq_table[ind].frequency = table.frequency;
-		}
-	}
-}
-
-static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy)
-{
-	struct device_node *np;
-	int i, count, ret;
-	u32 freq, mask;
-	struct clk *clk;
-	struct cpufreq_frequency_table *table;
-	struct cpu_data *data;
-	unsigned int cpu = policy->cpu;
-
-	np = of_get_cpu_node(cpu, NULL);
-	if (!np)
-		return -ENODEV;
-
-	data = kzalloc(sizeof(*data), GFP_KERNEL);
-	if (!data) {
-		pr_err("%s: no memory\n", __func__);
-		goto err_np;
-	}
-
-	data->clk = of_clk_get(np, 0);
-	if (IS_ERR(data->clk)) {
-		pr_err("%s: no clock information\n", __func__);
-		goto err_nomem2;
-	}
-
-	data->parent = of_parse_phandle(np, "clocks", 0);
-	if (!data->parent) {
-		pr_err("%s: could not get clock information\n", __func__);
-		goto err_nomem2;
-	}
-
-	count = of_property_count_strings(data->parent, "clock-names");
-	table = kcalloc(count + 1, sizeof(*table), GFP_KERNEL);
-	if (!table) {
-		pr_err("%s: no memory\n", __func__);
-		goto err_node;
-	}
-
-	if (fmask)
-		mask = fmask[get_hard_smp_processor_id(cpu)];
-	else
-		mask = 0x0;
-
-	for (i = 0; i < count; i++) {
-		clk = of_clk_get(data->parent, i);
-		freq = clk_get_rate(clk);
-		/*
-		 * the clock is valid if its frequency is not masked
-		 * and large than minimum allowed frequency.
-		 */
-		if (freq < min_cpufreq || (mask & (1 << i)))
-			table[i].frequency = CPUFREQ_ENTRY_INVALID;
-		else
-			table[i].frequency = freq / 1000;
-		table[i].driver_data = i;
-	}
-	freq_table_redup(table, count);
-	freq_table_sort(table, count);
-	table[i].frequency = CPUFREQ_TABLE_END;
-
-	/* set the min and max frequency properly */
-	ret = cpufreq_frequency_table_cpuinfo(policy, table);
-	if (ret) {
-		pr_err("invalid frequency table: %d\n", ret);
-		goto err_nomem1;
-	}
-
-	data->table = table;
-	per_cpu(cpu_data, cpu) = data;
-
-	/* update ->cpus if we have cluster, no harm if not */
-	cpumask_copy(policy->cpus, per_cpu(cpu_mask, cpu));
-	for_each_cpu(i, per_cpu(cpu_mask, cpu))
-		per_cpu(cpu_data, i) = data;
-
-	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
-	policy->cur = corenet_cpufreq_get_speed(policy->cpu);
-
-	cpufreq_frequency_table_get_attr(table, cpu);
-	of_node_put(np);
-
-	return 0;
-
-err_nomem1:
-	kfree(table);
-err_node:
-	of_node_put(data->parent);
-err_nomem2:
-	per_cpu(cpu_data, cpu) = NULL;
-	kfree(data);
-err_np:
-	of_node_put(np);
-
-	return -ENODEV;
-}
-
-static int __exit corenet_cpufreq_cpu_exit(struct cpufreq_policy *policy)
-{
-	struct cpu_data *data = per_cpu(cpu_data, policy->cpu);
-	unsigned int cpu;
-
-	cpufreq_frequency_table_put_attr(policy->cpu);
-	of_node_put(data->parent);
-	kfree(data->table);
-	kfree(data);
-
-	for_each_cpu(cpu, per_cpu(cpu_mask, policy->cpu))
-		per_cpu(cpu_data, cpu) = NULL;
-
-	return 0;
-}
-
-static int corenet_cpufreq_verify(struct cpufreq_policy *policy)
-{
-	struct cpufreq_frequency_table *table =
-		per_cpu(cpu_data, policy->cpu)->table;
-
-	return cpufreq_frequency_table_verify(policy, table);
-}
-
-static int corenet_cpufreq_target(struct cpufreq_policy *policy,
-		unsigned int target_freq, unsigned int relation)
-{
-	struct cpufreq_freqs freqs;
-	unsigned int new;
-	struct clk *parent;
-	int ret;
-	struct cpu_data *data = per_cpu(cpu_data, policy->cpu);
-
-	cpufreq_frequency_table_target(policy, data->table,
-			target_freq, relation, &new);
-
-	if (policy->cur == data->table[new].frequency)
-		return 0;
-
-	freqs.old = policy->cur;
-	freqs.new = data->table[new].frequency;
-
-	mutex_lock(&cpufreq_lock);
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-
-	parent = of_clk_get(data->parent, data->table[new].driver_data);
-	ret = clk_set_parent(data->clk, parent);
-	if (ret)
-		freqs.new = freqs.old;
-
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-	mutex_unlock(&cpufreq_lock);
-
-	return ret;
-}
-
-static struct freq_attr *corenet_cpufreq_attr[] = {
-	&cpufreq_freq_attr_scaling_available_freqs,
-	NULL,
-};
-
-static struct cpufreq_driver ppc_corenet_cpufreq_driver = {
-	.name		= "ppc_cpufreq",
-	.owner		= THIS_MODULE,
-	.flags		= CPUFREQ_CONST_LOOPS,
-	.init		= corenet_cpufreq_cpu_init,
-	.exit		= __exit_p(corenet_cpufreq_cpu_exit),
-	.verify		= corenet_cpufreq_verify,
-	.target		= corenet_cpufreq_target,
-	.get		= corenet_cpufreq_get_speed,
-	.attr		= corenet_cpufreq_attr,
-};
-
-static const struct of_device_id node_matches[] __initdata = {
-	{ .compatible = "fsl,p2041-clockgen", .data = &sdata[0], },
-	{ .compatible = "fsl,p3041-clockgen", .data = &sdata[0], },
-	{ .compatible = "fsl,p5020-clockgen", .data = &sdata[1], },
-	{ .compatible = "fsl,p4080-clockgen", .data = &sdata[2], },
-	{ .compatible = "fsl,p5040-clockgen", .data = &sdata[2], },
-	{ .compatible = "fsl,qoriq-clockgen-2.0", },
-	{}
-};
-
-static int __init ppc_corenet_cpufreq_init(void)
-{
-	int ret;
-	struct device_node  *np;
-	const struct of_device_id *match;
-	const struct soc_data *data;
-	unsigned int cpu;
-
-	np = of_find_matching_node(NULL, node_matches);
-	if (!np)
-		return -ENODEV;
-
-	for_each_possible_cpu(cpu) {
-		if (!alloc_cpumask_var(&per_cpu(cpu_mask, cpu), GFP_KERNEL))
-			goto err_mask;
-		cpumask_copy(per_cpu(cpu_mask, cpu), cpu_core_mask(cpu));
-	}
-
-	match = of_match_node(node_matches, np);
-	data = match->data;
-	if (data) {
-		if (data->flag)
-			fmask = data->freq_mask;
-		min_cpufreq = fsl_get_sys_freq();
-	} else {
-		min_cpufreq = fsl_get_sys_freq() / 2;
-	}
-
-	of_node_put(np);
-
-	ret = cpufreq_register_driver(&ppc_corenet_cpufreq_driver);
-	if (!ret)
-		pr_info("Freescale PowerPC corenet CPU frequency scaling driver\n");
-
-	return ret;
-
-err_mask:
-	for_each_possible_cpu(cpu)
-		free_cpumask_var(per_cpu(cpu_mask, cpu));
-
-	return -ENOMEM;
-}
-module_init(ppc_corenet_cpufreq_init);
-
-static void __exit ppc_corenet_cpufreq_exit(void)
-{
-	unsigned int cpu;
-
-	for_each_possible_cpu(cpu)
-		free_cpumask_var(per_cpu(cpu_mask, cpu));
-
-	cpufreq_unregister_driver(&ppc_corenet_cpufreq_driver);
-}
-module_exit(ppc_corenet_cpufreq_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Tang Yuantian <Yuantian.Tang@freescale.com>");
-MODULE_DESCRIPTION("cpufreq driver for Freescale e500mc series SoCs");