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-rw-r--r--arch/arm/mach-s3c64xx/Makefile4
-rw-r--r--arch/arm/mach-s3c64xx/cpufreq.c270
-rw-r--r--arch/arm/mach-s3c64xx/dma.c14
-rw-r--r--arch/arm/mach-s3c64xx/pm.c2
-rw-r--r--arch/arm/mach-s3c64xx/sleep.S23
5 files changed, 8 insertions, 305 deletions
diff --git a/arch/arm/mach-s3c64xx/Makefile b/arch/arm/mach-s3c64xx/Makefile
index 4657363f0674..f5a7144a052f 100644
--- a/arch/arm/mach-s3c64xx/Makefile
+++ b/arch/arm/mach-s3c64xx/Makefile
@@ -23,10 +23,6 @@ obj-$(CONFIG_CPU_S3C6410) += s3c6410.o
obj-y += irq.o
obj-y += irq-eint.o
-# CPU frequency scaling
-
-obj-$(CONFIG_CPU_FREQ_S3C64XX) += cpufreq.o
-
# DMA support
obj-$(CONFIG_S3C64XX_DMA) += dma.o
diff --git a/arch/arm/mach-s3c64xx/cpufreq.c b/arch/arm/mach-s3c64xx/cpufreq.c
deleted file mode 100644
index 4375b97588b8..000000000000
--- a/arch/arm/mach-s3c64xx/cpufreq.c
+++ /dev/null
@@ -1,270 +0,0 @@
-/* linux/arch/arm/plat-s3c64xx/cpufreq.c
- *
- * Copyright 2009 Wolfson Microelectronics plc
- *
- * S3C64xx CPUfreq Support
- *
- * 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.
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/cpufreq.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/regulator/consumer.h>
-
-static struct clk *armclk;
-static struct regulator *vddarm;
-static unsigned long regulator_latency;
-
-#ifdef CONFIG_CPU_S3C6410
-struct s3c64xx_dvfs {
- unsigned int vddarm_min;
- unsigned int vddarm_max;
-};
-
-static struct s3c64xx_dvfs s3c64xx_dvfs_table[] = {
- [0] = { 1000000, 1150000 },
- [1] = { 1050000, 1150000 },
- [2] = { 1100000, 1150000 },
- [3] = { 1200000, 1350000 },
-};
-
-static struct cpufreq_frequency_table s3c64xx_freq_table[] = {
- { 0, 66000 },
- { 0, 133000 },
- { 1, 222000 },
- { 1, 266000 },
- { 2, 333000 },
- { 2, 400000 },
- { 2, 532000 },
- { 2, 533000 },
- { 3, 667000 },
- { 0, CPUFREQ_TABLE_END },
-};
-#endif
-
-static int s3c64xx_cpufreq_verify_speed(struct cpufreq_policy *policy)
-{
- if (policy->cpu != 0)
- return -EINVAL;
-
- return cpufreq_frequency_table_verify(policy, s3c64xx_freq_table);
-}
-
-static unsigned int s3c64xx_cpufreq_get_speed(unsigned int cpu)
-{
- if (cpu != 0)
- return 0;
-
- return clk_get_rate(armclk) / 1000;
-}
-
-static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
- unsigned int target_freq,
- unsigned int relation)
-{
- int ret;
- unsigned int i;
- struct cpufreq_freqs freqs;
- struct s3c64xx_dvfs *dvfs;
-
- ret = cpufreq_frequency_table_target(policy, s3c64xx_freq_table,
- target_freq, relation, &i);
- if (ret != 0)
- return ret;
-
- freqs.cpu = 0;
- freqs.old = clk_get_rate(armclk) / 1000;
- freqs.new = s3c64xx_freq_table[i].frequency;
- freqs.flags = 0;
- dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[i].index];
-
- if (freqs.old == freqs.new)
- return 0;
-
- pr_debug("cpufreq: Transition %d-%dkHz\n", freqs.old, freqs.new);
-
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
-#ifdef CONFIG_REGULATOR
- if (vddarm && freqs.new > freqs.old) {
- ret = regulator_set_voltage(vddarm,
- dvfs->vddarm_min,
- dvfs->vddarm_max);
- if (ret != 0) {
- pr_err("cpufreq: Failed to set VDDARM for %dkHz: %d\n",
- freqs.new, ret);
- goto err;
- }
- }
-#endif
-
- ret = clk_set_rate(armclk, freqs.new * 1000);
- if (ret < 0) {
- pr_err("cpufreq: Failed to set rate %dkHz: %d\n",
- freqs.new, ret);
- goto err;
- }
-
-#ifdef CONFIG_REGULATOR
- if (vddarm && freqs.new < freqs.old) {
- ret = regulator_set_voltage(vddarm,
- dvfs->vddarm_min,
- dvfs->vddarm_max);
- if (ret != 0) {
- pr_err("cpufreq: Failed to set VDDARM for %dkHz: %d\n",
- freqs.new, ret);
- goto err_clk;
- }
- }
-#endif
-
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
- pr_debug("cpufreq: Set actual frequency %lukHz\n",
- clk_get_rate(armclk) / 1000);
-
- return 0;
-
-err_clk:
- if (clk_set_rate(armclk, freqs.old * 1000) < 0)
- pr_err("Failed to restore original clock rate\n");
-err:
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
- return ret;
-}
-
-#ifdef CONFIG_REGULATOR
-static void __init s3c64xx_cpufreq_config_regulator(void)
-{
- int count, v, i, found;
- struct cpufreq_frequency_table *freq;
- struct s3c64xx_dvfs *dvfs;
-
- count = regulator_count_voltages(vddarm);
- if (count < 0) {
- pr_err("cpufreq: Unable to check supported voltages\n");
- }
-
- freq = s3c64xx_freq_table;
- while (count > 0 && freq->frequency != CPUFREQ_TABLE_END) {
- if (freq->frequency == CPUFREQ_ENTRY_INVALID)
- continue;
-
- dvfs = &s3c64xx_dvfs_table[freq->index];
- found = 0;
-
- for (i = 0; i < count; i++) {
- v = regulator_list_voltage(vddarm, i);
- if (v >= dvfs->vddarm_min && v <= dvfs->vddarm_max)
- found = 1;
- }
-
- if (!found) {
- pr_debug("cpufreq: %dkHz unsupported by regulator\n",
- freq->frequency);
- freq->frequency = CPUFREQ_ENTRY_INVALID;
- }
-
- freq++;
- }
-
- /* Guess based on having to do an I2C/SPI write; in future we
- * will be able to query the regulator performance here. */
- regulator_latency = 1 * 1000 * 1000;
-}
-#endif
-
-static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
-{
- int ret;
- struct cpufreq_frequency_table *freq;
-
- if (policy->cpu != 0)
- return -EINVAL;
-
- if (s3c64xx_freq_table == NULL) {
- pr_err("cpufreq: No frequency information for this CPU\n");
- return -ENODEV;
- }
-
- armclk = clk_get(NULL, "armclk");
- if (IS_ERR(armclk)) {
- pr_err("cpufreq: Unable to obtain ARMCLK: %ld\n",
- PTR_ERR(armclk));
- return PTR_ERR(armclk);
- }
-
-#ifdef CONFIG_REGULATOR
- vddarm = regulator_get(NULL, "vddarm");
- if (IS_ERR(vddarm)) {
- ret = PTR_ERR(vddarm);
- pr_err("cpufreq: Failed to obtain VDDARM: %d\n", ret);
- pr_err("cpufreq: Only frequency scaling available\n");
- vddarm = NULL;
- } else {
- s3c64xx_cpufreq_config_regulator();
- }
-#endif
-
- freq = s3c64xx_freq_table;
- while (freq->frequency != CPUFREQ_TABLE_END) {
- unsigned long r;
-
- /* Check for frequencies we can generate */
- r = clk_round_rate(armclk, freq->frequency * 1000);
- r /= 1000;
- if (r != freq->frequency) {
- pr_debug("cpufreq: %dkHz unsupported by clock\n",
- freq->frequency);
- freq->frequency = CPUFREQ_ENTRY_INVALID;
- }
-
- /* If we have no regulator then assume startup
- * frequency is the maximum we can support. */
- if (!vddarm && freq->frequency > s3c64xx_cpufreq_get_speed(0))
- freq->frequency = CPUFREQ_ENTRY_INVALID;
-
- freq++;
- }
-
- policy->cur = clk_get_rate(armclk) / 1000;
-
- /* Datasheet says PLL stabalisation time (if we were to use
- * the PLLs, which we don't currently) is ~300us worst case,
- * but add some fudge.
- */
- policy->cpuinfo.transition_latency = (500 * 1000) + regulator_latency;
-
- ret = cpufreq_frequency_table_cpuinfo(policy, s3c64xx_freq_table);
- if (ret != 0) {
- pr_err("cpufreq: Failed to configure frequency table: %d\n",
- ret);
- regulator_put(vddarm);
- clk_put(armclk);
- }
-
- return ret;
-}
-
-static struct cpufreq_driver s3c64xx_cpufreq_driver = {
- .owner = THIS_MODULE,
- .flags = 0,
- .verify = s3c64xx_cpufreq_verify_speed,
- .target = s3c64xx_cpufreq_set_target,
- .get = s3c64xx_cpufreq_get_speed,
- .init = s3c64xx_cpufreq_driver_init,
- .name = "s3c",
-};
-
-static int __init s3c64xx_cpufreq_init(void)
-{
- return cpufreq_register_driver(&s3c64xx_cpufreq_driver);
-}
-module_init(s3c64xx_cpufreq_init);
diff --git a/arch/arm/mach-s3c64xx/dma.c b/arch/arm/mach-s3c64xx/dma.c
index b197171e7d03..204bfafe4bfc 100644
--- a/arch/arm/mach-s3c64xx/dma.c
+++ b/arch/arm/mach-s3c64xx/dma.c
@@ -113,7 +113,7 @@ found:
return chan;
}
-int s3c2410_dma_config(unsigned int channel, int xferunit)
+int s3c2410_dma_config(enum dma_ch channel, int xferunit)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
@@ -297,7 +297,7 @@ static int s3c64xx_dma_flush(struct s3c2410_dma_chan *chan)
return 0;
}
-int s3c2410_dma_ctrl(unsigned int channel, enum s3c2410_chan_op op)
+int s3c2410_dma_ctrl(enum dma_ch channel, enum s3c2410_chan_op op)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
@@ -331,7 +331,7 @@ EXPORT_SYMBOL(s3c2410_dma_ctrl);
*
*/
-int s3c2410_dma_enqueue(unsigned int channel, void *id,
+int s3c2410_dma_enqueue(enum dma_ch channel, void *id,
dma_addr_t data, int size)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
@@ -415,7 +415,7 @@ err_buff:
EXPORT_SYMBOL(s3c2410_dma_enqueue);
-int s3c2410_dma_devconfig(unsigned int channel,
+int s3c2410_dma_devconfig(enum dma_ch channel,
enum s3c2410_dmasrc source,
unsigned long devaddr)
{
@@ -463,7 +463,7 @@ int s3c2410_dma_devconfig(unsigned int channel,
EXPORT_SYMBOL(s3c2410_dma_devconfig);
-int s3c2410_dma_getposition(unsigned int channel,
+int s3c2410_dma_getposition(enum dma_ch channel,
dma_addr_t *src, dma_addr_t *dst)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
@@ -487,7 +487,7 @@ EXPORT_SYMBOL(s3c2410_dma_getposition);
* get control of an dma channel
*/
-int s3c2410_dma_request(unsigned int channel,
+int s3c2410_dma_request(enum dma_ch channel,
struct s3c2410_dma_client *client,
void *dev)
{
@@ -533,7 +533,7 @@ EXPORT_SYMBOL(s3c2410_dma_request);
* allowed to go through.
*/
-int s3c2410_dma_free(unsigned int channel, struct s3c2410_dma_client *client)
+int s3c2410_dma_free(enum dma_ch channel, struct s3c2410_dma_client *client)
{
struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel);
unsigned long flags;
diff --git a/arch/arm/mach-s3c64xx/pm.c b/arch/arm/mach-s3c64xx/pm.c
index bc1c470b7de6..8bad64370689 100644
--- a/arch/arm/mach-s3c64xx/pm.c
+++ b/arch/arm/mach-s3c64xx/pm.c
@@ -112,7 +112,7 @@ void s3c_pm_save_core(void)
* this.
*/
-static void s3c64xx_cpu_suspend(void)
+static int s3c64xx_cpu_suspend(unsigned long arg)
{
unsigned long tmp;
diff --git a/arch/arm/mach-s3c64xx/sleep.S b/arch/arm/mach-s3c64xx/sleep.S
index 1f87732b2320..34313f9c8792 100644
--- a/arch/arm/mach-s3c64xx/sleep.S
+++ b/arch/arm/mach-s3c64xx/sleep.S
@@ -25,29 +25,6 @@
.text
- /* s3c_cpu_save
- *
- * Save enough processor state to allow the restart of the pm.c
- * code after resume.
- *
- * entry:
- * r1 = v:p offset
- */
-
-ENTRY(s3c_cpu_save)
- stmfd sp!, { r4 - r12, lr }
- ldr r3, =resume_with_mmu
- bl cpu_suspend
-
- @@ call final suspend code
- ldr r0, =pm_cpu_sleep
- ldr pc, [r0]
-
- @@ return to the caller, after the MMU is turned on.
- @@ restore the last bits of the stack and return.
-resume_with_mmu:
- ldmfd sp!, { r4 - r12, pc } @ return, from sp from s3c_cpu_save
-
/* Sleep magic, the word before the resume entry point so that the
* bootloader can check for a resumeable image. */
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-19 22:23:40 +0000