cpufreq: qoriq: rename the driver

This driver works on all QorIQ platforms which include
ARM-based cores and PPC-based cores.
Rename it in order to represent better.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 0 insertions, 372 deletions

diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c
deleted file mode 100644
index 9fd51c860308..000000000000
--- a/drivers/cpufreq/ppc-corenet-cpufreq.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * CPU Frequency Scaling driver for Freescale QorIQ 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 <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>
-
-#include <asm/smp.h>	/* for get_hard_smp_processor_id() in UP configs */
-
-/**
- * struct cpu_data
- * @parent: the parent node of cpu clock
- * @table: frequency table
- */
-struct cpu_data {
-	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;
-
-#if defined(CONFIG_ARM)
-static int get_cpu_physical_id(int cpu)
-{
-	return topology_core_id(cpu);
-}
-#else
-static int get_cpu_physical_id(int cpu)
-{
-	return get_hard_smp_processor_id(cpu);
-}
-#endif
-
-static u32 get_bus_freq(void)
-{
-	struct device_node *soc;
-	u32 sysfreq;
-
-	soc = of_find_node_by_type(NULL, "soc");
-	if (!soc)
-		return 0;
-
-	if (of_property_read_u32(soc, "bus-frequency", &sysfreq))
-		sysfreq = 0;
-
-	of_node_put(soc);
-
-	return sysfreq;
-}
-
-static struct device_node *cpu_to_clk_node(int cpu)
-{
-	struct device_node *np, *clk_np;
-
-	if (!cpu_present(cpu))
-		return NULL;
-
-	np = of_get_cpu_node(cpu, NULL);
-	if (!np)
-		return NULL;
-
-	clk_np = of_parse_phandle(np, "clocks", 0);
-	if (!clk_np)
-		return NULL;
-
-	of_node_put(np);
-
-	return clk_np;
-}
-
-/* traverse cpu nodes to get cpu mask of sharing clock wire */
-static void set_affected_cpus(struct cpufreq_policy *policy)
-{
-	struct device_node *np, *clk_np;
-	struct cpumask *dstp = policy->cpus;
-	int i;
-
-	np = cpu_to_clk_node(policy->cpu);
-	if (!np)
-		return;
-
-	for_each_present_cpu(i) {
-		clk_np = cpu_to_clk_node(i);
-		if (!clk_np)
-			continue;
-
-		if (clk_np == np)
-			cpumask_set_cpu(i, dstp);
-
-		of_node_put(clk_np);
-	}
-	of_node_put(np);
-}
-
-/* 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 qoriq_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;
-	u64 u64temp;
-
-	np = of_get_cpu_node(cpu, NULL);
-	if (!np)
-		return -ENODEV;
-
-	data = kzalloc(sizeof(*data), GFP_KERNEL);
-	if (!data)
-		goto err_np;
-
-	policy->clk = of_clk_get(np, 0);
-	if (IS_ERR(policy->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_cpu_physical_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_table_validate_and_show(policy, table);
-	if (ret) {
-		pr_err("invalid frequency table: %d\n", ret);
-		goto err_nomem1;
-	}
-
-	data->table = table;
-
-	/* update ->cpus if we have cluster, no harm if not */
-	set_affected_cpus(policy);
-	policy->driver_data = data;
-
-	/* Minimum transition latency is 12 platform clocks */
-	u64temp = 12ULL * NSEC_PER_SEC;
-	do_div(u64temp, get_bus_freq());
-	policy->cpuinfo.transition_latency = u64temp + 1;
-
-	of_node_put(np);
-
-	return 0;
-
-err_nomem1:
-	kfree(table);
-err_node:
-	of_node_put(data->parent);
-err_nomem2:
-	policy->driver_data = NULL;
-	kfree(data);
-err_np:
-	of_node_put(np);
-
-	return -ENODEV;
-}
-
-static int __exit qoriq_cpufreq_cpu_exit(struct cpufreq_policy *policy)
-{
-	struct cpu_data *data = policy->driver_data;
-
-	of_node_put(data->parent);
-	kfree(data->table);
-	kfree(data);
-	policy->driver_data = NULL;
-
-	return 0;
-}
-
-static int qoriq_cpufreq_target(struct cpufreq_policy *policy,
-		unsigned int index)
-{
-	struct clk *parent;
-	struct cpu_data *data = policy->driver_data;
-
-	parent = of_clk_get(data->parent, data->table[index].driver_data);
-	return clk_set_parent(policy->clk, parent);
-}
-
-static struct cpufreq_driver qoriq_cpufreq_driver = {
-	.name		= "qoriq_cpufreq",
-	.flags		= CPUFREQ_CONST_LOOPS,
-	.init		= qoriq_cpufreq_cpu_init,
-	.exit		= __exit_p(qoriq_cpufreq_cpu_exit),
-	.verify		= cpufreq_generic_frequency_table_verify,
-	.target_index	= qoriq_cpufreq_target,
-	.get		= cpufreq_generic_get,
-	.attr		= cpufreq_generic_attr,
-};
-
-static const struct of_device_id node_matches[] __initconst = {
-	{ .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 qoriq_cpufreq_init(void)
-{
-	int ret;
-	struct device_node  *np;
-	const struct of_device_id *match;
-	const struct soc_data *data;
-
-	np = of_find_matching_node(NULL, node_matches);
-	if (!np)
-		return -ENODEV;
-
-	match = of_match_node(node_matches, np);
-	data = match->data;
-	if (data) {
-		if (data->flag)
-			fmask = data->freq_mask;
-		min_cpufreq = get_bus_freq();
-	} else {
-		min_cpufreq = get_bus_freq() / 2;
-	}
-
-	of_node_put(np);
-
-	ret = cpufreq_register_driver(&qoriq_cpufreq_driver);
-	if (!ret)
-		pr_info("Freescale QorIQ CPU frequency scaling driver\n");
-
-	return ret;
-}
-module_init(qoriq_cpufreq_init);
-
-static void __exit qoriq_cpufreq_exit(void)
-{
-	cpufreq_unregister_driver(&qoriq_cpufreq_driver);
-}
-module_exit(qoriq_cpufreq_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Tang Yuantian <Yuantian.Tang@freescale.com>");
-MODULE_DESCRIPTION("cpufreq driver for Freescale QorIQ series SoCs");