Merge tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux

Pull clock framework changes from Mike Turquette:
 "The common clock framework changes for 3.8 are comprised of lots of
  fixes for existing platforms as well as new ports for some ARM
  platforms.  In addition there are new clk drivers for audio devices
  and MFDs."

Fix up trivial conflict in <linux/clk-provider.h> (removal of 'inline'
clashing with return type fixes)

* tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux: (51 commits)
  MAINTAINERS: bad email address for Mike Turquette
  clk: introduce optional disable_unused callback
  clk: ux500: fix bit error
  clk: clock multiplexers may register out of order
  clk: ux500: Initial support for abx500 clock driver
  CLK: SPEAr: Remove unused dummy apb_pclk
  CLK: SPEAr: Correct index scanning done for clock synths
  CLK: SPEAr: Update clock rate table
  CLK: SPEAr: Add missing clocks
  CLK: SPEAr: Set CLK_SET_RATE_PARENT for few clocks
  CLK: SPEAr13xx: fix parent names of multiple clocks
  CLK: SPEAr13xx: Fix mux clock names
  CLK: SPEAr: Fix dev_id & con_id for multiple clocks
  clk: move IM-PD1 clocks to drivers/clk
  clk: make ICST driver handle the VCO registers
  clk: add GPLv2 headers to the Versatile clock files
  clk: mxs: Use a better name for the USB PHY clock
  clk: spear: Add stub functions for spear3[0|1|2]0_clk_init()
  CLK: clk-twl6040: fix return value check in twl6040_clk_probe()
  clk: ux500: Register nomadik keypad clock lookups for u8500
  ...

1 files changed, 55 insertions, 46 deletions

diff --git a/drivers/cpufreq/db8500-cpufreq.c b/drivers/cpufreq/db8500-cpufreq.c
index 74b830b..4f154bc 100644
--- a/drivers/cpufreq/db8500-cpufreq.c
+++ b/drivers/cpufreq/db8500-cpufreq.c
@@ -8,43 +8,17 @@
  * Author: Jonas Aaberg <jonas.aberg@stericsson.com>
  *
  */
+#include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/cpufreq.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
-#include <linux/mfd/dbx500-prcmu.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
 #include <mach/id.h>
 
-static struct cpufreq_frequency_table freq_table[] = {
-	[0] = {
-		.index = 0,
-		.frequency = 200000,
-	},
-	[1] = {
-		.index = 1,
-		.frequency = 400000,
-	},
-	[2] = {
-		.index = 2,
-		.frequency = 800000,
-	},
-	[3] = {
-		/* Used for MAX_OPP, if available */
-		.index = 3,
-		.frequency = CPUFREQ_TABLE_END,
-	},
-	[4] = {
-		.index = 4,
-		.frequency = CPUFREQ_TABLE_END,
-	},
-};
-
-static enum arm_opp idx2opp[] = {
-	ARM_EXTCLK,
-	ARM_50_OPP,
-	ARM_100_OPP,
-	ARM_MAX_OPP
-};
+static struct cpufreq_frequency_table *freq_table;
+static struct clk *armss_clk;
 
 static struct freq_attr *db8500_cpufreq_attr[] = {
 	&cpufreq_freq_attr_scaling_available_freqs,
@@ -85,9 +59,9 @@ static int db8500_cpufreq_target(struct cpufreq_policy *policy,
 	for_each_cpu(freqs.cpu, policy->cpus)
 		cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
 
-	/* request the PRCM unit for opp change */
-	if (prcmu_set_arm_opp(idx2opp[idx])) {
-		pr_err("db8500-cpufreq:  Failed to set OPP level\n");
+	/* update armss clk frequency */
+	if (clk_set_rate(armss_clk, freq_table[idx].frequency * 1000)) {
+		pr_err("db8500-cpufreq: Failed to update armss clk\n");
 		return -EINVAL;
 	}
 
@@ -100,25 +74,36 @@ static int db8500_cpufreq_target(struct cpufreq_policy *policy,
 
 static unsigned int db8500_cpufreq_getspeed(unsigned int cpu)
 {
-	int i;
-	/* request the prcm to get the current ARM opp */
-	for (i = 0; prcmu_get_arm_opp() != idx2opp[i]; i++)
-		;
-	return freq_table[i].frequency;
+	int i = 0;
+	unsigned long freq = clk_get_rate(armss_clk) / 1000;
+
+	while (freq_table[i].frequency != CPUFREQ_TABLE_END) {
+		if (freq <= freq_table[i].frequency)
+			return freq_table[i].frequency;
+		i++;
+	}
+
+	/* We could not find a corresponding frequency. */
+	pr_err("db8500-cpufreq: Failed to find cpufreq speed\n");
+	return 0;
 }
 
 static int __cpuinit db8500_cpufreq_init(struct cpufreq_policy *policy)
 {
-	int i, res;
-
-	BUILD_BUG_ON(ARRAY_SIZE(idx2opp) + 1 != ARRAY_SIZE(freq_table));
+	int i = 0;
+	int res;
 
-	if (prcmu_has_arm_maxopp())
-		freq_table[3].frequency = 1000000;
+	armss_clk = clk_get(NULL, "armss");
+	if (IS_ERR(armss_clk)) {
+		pr_err("db8500-cpufreq : Failed to get armss clk\n");
+		return PTR_ERR(armss_clk);
+	}
 
 	pr_info("db8500-cpufreq : Available frequencies:\n");
-	for (i = 0; freq_table[i].frequency != CPUFREQ_TABLE_END; i++)
+	while (freq_table[i].frequency != CPUFREQ_TABLE_END) {
 		pr_info("  %d Mhz\n", freq_table[i].frequency/1000);
+		i++;
+	}
 
 	/* get policy fields based on the table */
 	res = cpufreq_frequency_table_cpuinfo(policy, freq_table);
@@ -126,6 +111,7 @@ static int __cpuinit db8500_cpufreq_init(struct cpufreq_policy *policy)
 		cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
 	else {
 		pr_err("db8500-cpufreq : Failed to read policy table\n");
+		clk_put(armss_clk);
 		return res;
 	}
 
@@ -159,12 +145,35 @@ static struct cpufreq_driver db8500_cpufreq_driver = {
 	.attr   = db8500_cpufreq_attr,
 };
 
+static int db8500_cpufreq_probe(struct platform_device *pdev)
+{
+	freq_table = dev_get_platdata(&pdev->dev);
+
+	if (!freq_table) {
+		pr_err("db8500-cpufreq: Failed to fetch cpufreq table\n");
+		return -ENODEV;
+	}
+
+	return cpufreq_register_driver(&db8500_cpufreq_driver);
+}
+
+static struct platform_driver db8500_cpufreq_plat_driver = {
+	.driver = {
+		.name = "cpufreq-u8500",
+		.owner = THIS_MODULE,
+	},
+	.probe = db8500_cpufreq_probe,
+};
+
 static int __init db8500_cpufreq_register(void)
 {
 	if (!cpu_is_u8500_family())
 		return -ENODEV;
 
 	pr_info("cpufreq for DB8500 started\n");
-	return cpufreq_register_driver(&db8500_cpufreq_driver);
+	return platform_driver_register(&db8500_cpufreq_plat_driver);
 }
 device_initcall(db8500_cpufreq_register);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("cpufreq driver for DB8500");