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This series a couple bug fixes and a couple fixes that make this

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driver support recently added OMAP-based SoCs.
 
 The 'get_cpu_device' patch is needed due to a change in the OMAP
 OMAP PM core code which enforces use of get_cpu_device() instead of
 a deprecated OMAP-specific API.
 
 The usage of plat/*.h headers breaks single zImage, so platforms are
 cleaning up and/or removing plat/*.h so the driver needs to be fixed
 accordingly.
 
 This series is based on the merge of Rafael's pm-for-3.7-rc1 tag into
 Linus' master branch: commit 16642a2e7b.
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Merge tag 'for_3.7-fixes-cpufreq' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-v3.7-rc1/fixes-cpufreq

This series a couple bug fixes and a couple fixes that make this
driver support recently added OMAP-based SoCs.

The 'get_cpu_device' patch is needed due to a change in the OMAP
OMAP PM core code which enforces use of get_cpu_device() instead of
a deprecated OMAP-specific API.

The usage of plat/*.h headers breaks single zImage, so platforms are
cleaning up and/or removing plat/*.h so the driver needs to be fixed
accordingly.

This series is based on the merge of Rafael's pm-for-3.7-rc1 tag into
Linus' master branch: commit 16642a2e7b.
This commit is contained in:
Tony Lindgren 2012-10-08 15:54:14 -07:00
commit 37fedb4c42
4 changed files with 40 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
arch/arm/mach-omap2/opp.c
View File

@ -18,6 +18,7 @@
*/
#include <linux/module.h>
#include <linux/opp.h>
#include <linux/cpu.h>
#include <plat/omap_device.h>
@ -62,13 +63,23 @@ int __init omap_init_opp_table(struct omap_opp_def *opp_def,
__func__, i);
return -EINVAL;
}
oh = omap_hwmod_lookup(opp_def->hwmod_name);
if (!oh || !oh->od) {
pr_debug("%s: no hwmod or odev for %s, [%d] cannot add OPPs.\n",
__func__, opp_def->hwmod_name, i);
continue;
if (!strncmp(opp_def->hwmod_name, "mpu", 3)) {
/*
* All current OMAPs share voltage rail and
* clock source, so CPU0 is used to represent
* the MPU-SS.
*/
dev = get_cpu_device(0);
} else {
oh = omap_hwmod_lookup(opp_def->hwmod_name);
if (!oh || !oh->od) {
pr_debug("%s: no hwmod or odev for %s, [%d] cannot add OPPs.\n",
__func__, opp_def->hwmod_name, i);
continue;
}
dev = &oh->od->pdev->dev;
}
dev = &oh->od->pdev->dev;
r = opp_add(dev, opp_def->freq, opp_def->u_volt);
if (r) {

11
arch/arm/mach-omap2/pm.c
View File

@ -16,6 +16,7 @@
#include <linux/opp.h>
#include <linux/export.h>
#include <linux/suspend.h>
#include <linux/cpu.h>
#include <asm/system_misc.h>
@ -169,7 +170,15 @@ static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
goto exit;
}
dev = omap_device_get_by_hwmod_name(oh_name);
if (!strncmp(oh_name, "mpu", 3))
/*
* All current OMAPs share voltage rail and clock
* source, so CPU0 is used to represent the MPU-SS.
*/
dev = get_cpu_device(0);
else
dev = omap_device_get_by_hwmod_name(oh_name);
if (IS_ERR(dev)) {
pr_err("%s: Unable to get dev pointer for hwmod %s\n",
__func__, oh_name);

2
arch/arm/mach-omap2/twl-common.c
View File

@ -158,7 +158,7 @@ static struct regulator_init_data omap3_vpll2_idata = {
};
static struct regulator_consumer_supply omap3_vdd1_supply[] = {
REGULATOR_SUPPLY("vcc", "mpu.0"),
REGULATOR_SUPPLY("vcc", "cpu0"),
};
static struct regulator_consumer_supply omap3_vdd2_supply[] = {

36
drivers/cpufreq/omap-cpufreq.c
View File

@ -30,20 +30,12 @@
#include <asm/smp_plat.h>
#include <asm/cpu.h>
#include <plat/clock.h>
#include <plat/omap-pm.h>
#include <plat/common.h>
#include <plat/omap_device.h>
#include <mach/hardware.h>
/* OPP tolerance in percentage */
#define OPP_TOLERANCE 4
static struct cpufreq_frequency_table *freq_table;
static atomic_t freq_table_users = ATOMIC_INIT(0);
static struct clk *mpu_clk;
static char *mpu_clk_name;
static struct device *mpu_dev;
static struct regulator *mpu_reg;
@ -108,6 +100,14 @@ static int omap_target(struct cpufreq_policy *policy,
}
freq = freqs.new * 1000;
ret = clk_round_rate(mpu_clk, freq);
if (IS_ERR_VALUE(ret)) {
dev_warn(mpu_dev,
"CPUfreq: Cannot find matching frequency for %lu\n",
freq);
return ret;
}
freq = ret;
if (mpu_reg) {
opp = opp_find_freq_ceil(mpu_dev, &freq);
@ -172,7 +172,7 @@ static int __cpuinit omap_cpu_init(struct cpufreq_policy *policy)
{
int result = 0;
mpu_clk = clk_get(NULL, mpu_clk_name);
mpu_clk = clk_get(NULL, "cpufreq_ck");
if (IS_ERR(mpu_clk))
return PTR_ERR(mpu_clk);
@ -253,22 +253,10 @@ static struct cpufreq_driver omap_driver = {
static int __init omap_cpufreq_init(void)
{
if (cpu_is_omap24xx())
mpu_clk_name = "virt_prcm_set";
else if (cpu_is_omap34xx())
mpu_clk_name = "dpll1_ck";
else if (cpu_is_omap44xx())
mpu_clk_name = "dpll_mpu_ck";
if (!mpu_clk_name) {
pr_err("%s: unsupported Silicon?\n", __func__);
return -EINVAL;
}
mpu_dev = omap_device_get_by_hwmod_name("mpu");
if (IS_ERR(mpu_dev)) {
mpu_dev = get_cpu_device(0);
if (!mpu_dev) {
pr_warning("%s: unable to get the mpu device\n", __func__);
return PTR_ERR(mpu_dev);
return -EINVAL;
}
mpu_reg = regulator_get(mpu_dev, "vcc");