Merge "msm: rpm-regulator-smd: Add support for software control mode configuration"
diff --git a/arch/arm/mach-msm/include/mach/rpm-regulator-smd.h b/arch/arm/mach-msm/include/mach/rpm-regulator-smd.h
index 9e70510..cfe8ae7 100644
--- a/arch/arm/mach-msm/include/mach/rpm-regulator-smd.h
+++ b/arch/arm/mach-msm/include/mach/rpm-regulator-smd.h
@@ -38,6 +38,32 @@
RPM_REGULATOR_CORNER_SUPER_TURBO,
};
+/**
+ * enum rpm_regulator_mode - control mode for LDO or SMPS type regulators
+ * %RPM_REGULATOR_MODE_AUTO: For SMPS type regulators, use SMPS auto mode so
+ * that the hardware can automatically switch
+ * between PFM and PWM modes based on realtime
+ * load.
+ * LDO type regulators do not support this mode.
+ * %RPM_REGULATOR_MODE_IPEAK: For SMPS type regulators, use aggregated
+ * software current requests to determine
+ * usage of PFM or PWM mode.
+ * For LDO type regulators, use aggregated
+ * software current requests to determine
+ * usage of LPM or HPM mode.
+ * %RPM_REGULATOR_MODE_HPM: For SMPS type regulators, force the
+ * usage of PWM mode.
+ * For LDO type regulators, force the
+ * usage of HPM mode.
+ *
+ * These values should be used in calls to rpm_regulator_set_mode().
+ */
+enum rpm_regulator_mode {
+ RPM_REGULATOR_MODE_AUTO,
+ RPM_REGULATOR_MODE_IPEAK,
+ RPM_REGULATOR_MODE_HPM,
+};
+
#if defined(CONFIG_MSM_RPM_REGULATOR_SMD) || defined(CONFIG_MSM_RPM_REGULATOR)
struct rpm_regulator *rpm_regulator_get(struct device *dev, const char *supply);
@@ -71,6 +97,14 @@
static inline int __init rpm_regulator_smd_driver_init(void) { return 0; }
-#endif /* CONFIG_MSM_RPM_REGULATOR_SMD */
+#endif /* CONFIG_MSM_RPM_REGULATOR_SMD || CONFIG_MSM_RPM_REGULATOR */
+
+#ifdef CONFIG_MSM_RPM_REGULATOR_SMD
+int rpm_regulator_set_mode(struct rpm_regulator *regulator,
+ enum rpm_regulator_mode mode);
+#else
+static inline int rpm_regulator_set_mode(struct rpm_regulator *regulator,
+ enum rpm_regulator_mode mode) { return 0; }
+#endif
#endif
diff --git a/arch/arm/mach-msm/rpm-regulator-smd.c b/arch/arm/mach-msm/rpm-regulator-smd.c
index 55ce4b1..923e647 100644
--- a/arch/arm/mach-msm/rpm-regulator-smd.c
+++ b/arch/arm/mach-msm/rpm-regulator-smd.c
@@ -73,6 +73,17 @@
RPM_REGULATOR_PARAM_MAX,
};
+enum rpm_regulator_smps_mode {
+ RPM_REGULATOR_SMPS_MODE_AUTO = 0,
+ RPM_REGULATOR_SMPS_MODE_IPEAK = 1,
+ RPM_REGULATOR_SMPS_MODE_PWM = 2,
+};
+
+enum rpm_regulator_ldo_mode {
+ RPM_REGULATOR_LDO_MODE_IPEAK = 0,
+ RPM_REGULATOR_LDO_MODE_HPM = 1,
+};
+
#define RPM_SET_CONFIG_ACTIVE BIT(0)
#define RPM_SET_CONFIG_SLEEP BIT(1)
#define RPM_SET_CONFIG_BOTH (RPM_SET_CONFIG_ACTIVE \
@@ -118,6 +129,20 @@
PARAM(FLOOR_CORNER, 1, 1, 0, 0, "vfc", 0, 6, "qcom,init-voltage-floor-corner"),
};
+struct rpm_regulator_mode_map {
+ int ldo_mode;
+ int smps_mode;
+};
+
+static struct rpm_regulator_mode_map mode_mapping[] = {
+ [RPM_REGULATOR_MODE_AUTO]
+ = {-1, RPM_REGULATOR_SMPS_MODE_AUTO},
+ [RPM_REGULATOR_MODE_IPEAK]
+ = {RPM_REGULATOR_LDO_MODE_IPEAK, RPM_REGULATOR_SMPS_MODE_IPEAK},
+ [RPM_REGULATOR_MODE_HPM]
+ = {RPM_REGULATOR_LDO_MODE_HPM, RPM_REGULATOR_SMPS_MODE_PWM},
+};
+
struct rpm_vreg_request {
u32 param[RPM_REGULATOR_PARAM_MAX];
u32 valid;
@@ -1077,6 +1102,71 @@
}
EXPORT_SYMBOL_GPL(rpm_regulator_set_voltage);
+/**
+ * rpm_regulator_set_mode() - set regulator operating mode
+ * @regulator: RPM regulator handle
+ * @mode: operating mode requested for the regulator
+ *
+ * Requests that the mode of the regulator be set to the mode specified. This
+ * parameter is aggregated using a max function such that AUTO < IPEAK < HPM.
+ *
+ * Returns 0 on success or errno on failure.
+ */
+int rpm_regulator_set_mode(struct rpm_regulator *regulator,
+ enum rpm_regulator_mode mode)
+{
+ int index = 0;
+ u32 new_mode, prev_mode;
+ int rc;
+
+ rc = rpm_regulator_check_input(regulator);
+ if (rc)
+ return rc;
+
+ if (mode < 0 || mode >= ARRAY_SIZE(mode_mapping)) {
+ vreg_err(regulator, "invalid mode requested: %d\n", mode);
+ return -EINVAL;
+ }
+
+ switch (regulator->rpm_vreg->regulator_type) {
+ case RPM_REGULATOR_SMD_TYPE_SMPS:
+ index = RPM_REGULATOR_PARAM_MODE_SMPS;
+ new_mode = mode_mapping[mode].smps_mode;
+ break;
+ case RPM_REGULATOR_SMD_TYPE_LDO:
+ index = RPM_REGULATOR_PARAM_MODE_LDO;
+ new_mode = mode_mapping[mode].ldo_mode;
+ break;
+ default:
+ vreg_err(regulator, "unsupported regulator type: %d\n",
+ regulator->rpm_vreg->regulator_type);
+ return -EINVAL;
+ };
+
+ if (new_mode < params[index].min || new_mode > params[index].max) {
+ vreg_err(regulator, "invalid mode requested: %d for type: %d\n",
+ mode, regulator->rpm_vreg->regulator_type);
+ return -EINVAL;
+ }
+
+ rpm_vreg_lock(regulator->rpm_vreg);
+
+ prev_mode = regulator->req.param[index];
+ regulator->req.param[index] = new_mode;
+ regulator->req.modified |= BIT(index);
+
+ rc = rpm_vreg_aggregate_requests(regulator);
+ if (rc) {
+ vreg_err(regulator, "set mode failed, rc=%d", rc);
+ regulator->req.param[index] = prev_mode;
+ }
+
+ rpm_vreg_unlock(regulator->rpm_vreg);
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(rpm_regulator_set_mode);
+
static struct regulator_ops ldo_ops = {
.enable = rpm_vreg_enable,
.disable = rpm_vreg_disable,