Merge tag 'for_3.7-fixes-cpufreq' of git://git.kernel.org/pub/scm/lin…

…ux/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 16642a2.

arch/arm/mach-omap2/opp.c

@@ -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) {

arch/arm/mach-omap2/pm.c

@@ -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);

arch/arm/mach-omap2/twl-common.c

@@ -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[] = {

drivers/cpufreq/omap-cpufreq.c

@@ -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");