Add initial DT support.
Signed-off-by: Aaro Koskinen <aaro.koskinen@xxxxxx>
---
Documentation/devicetree/bindings/mfd/menelaus.txt | 30 +++++++++++++
drivers/mfd/menelaus.c | 52 ++++++++++++++++++++--
2 files changed, 78 insertions(+), 4 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mfd/menelaus.txt
diff --git a/Documentation/devicetree/bindings/mfd/menelaus.txt b/Documentation/devicetree/bindings/mfd/menelaus.txt
new file mode 100644
index 0000000..5f69f23
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/menelaus.txt
@@ -0,0 +1,30 @@
+Menelaus (Texas Instruments TWL92330) Power Management chip
+
+Menelaus provides facilities to control the power resources.
+
+Required properties:
+- compatible: must be "menelaus"
+- reg: I2C address of the chip
+
+Optional properties:
+- interrupts: the interrupt
+- ti,autosleep: All regulators are put to sleep by default.
+- ti,vcore-min-microvolt: Range floor for the HW controlled VCORE
+- ti,vcore-max-microvolt: Range roof for the HW controlled VCORE
+
+The use of ti,autosleep is recommended at least on Nokia N800/N810.
+
+Example:
+
+&i2c1 {
+ clock-frequency = <400000>;
+
+ pmic@72 {
+ compatible = "menelaus";
+ reg = <0x72>;
+ interrupts = <7 IRQ_TYPE_EDGE_RISING>;
+ ti,autosleep;
+ ti,vcore-min-microvolt = <1050000>;
+ ti,vcore-max-microvolt = <1400000>;
+ };
+};
diff --git a/drivers/mfd/menelaus.c b/drivers/mfd/menelaus.c
index 917fa86..3e04c64 100644
--- a/drivers/mfd/menelaus.c
+++ b/drivers/mfd/menelaus.c
@@ -16,6 +16,8 @@
* Amit Kucheria <amit.kucheria@xxxxxxxxx>
* Copyright (C) 2005, 2006 Nokia Corporation
*
+ * Cleanups and DT modifications by Aaro Koskinen <aaro.koskinen@xxxxxx>.
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
@@ -767,6 +769,22 @@ out:
return ret;
}
+static int menelaus_auto_sleep_regulators(void)
+{
+ u32 val;
+ int ret;
+
+ val = EN_VPLL_SLEEP | EN_VMMC_SLEEP | EN_VAUX_SLEEP | EN_VIO_SLEEP | \
+ EN_VMEM_SLEEP | EN_DC3_SLEEP | EN_VC_SLEEP | EN_DC2_SLEEP;
+ ret = menelaus_set_regulator_sleep(1, val);
+ if (ret < 0) {
+ dev_err(&the_menelaus->client->dev,
+ "could not set regulators to sleep: %d\n", ret);
+ return ret;
+ }
+ return 0;
+}
+
/*-----------------------------------------------------------------------*/
/* Handles Menelaus interrupts. Does not run in interrupt context */
@@ -1162,6 +1180,7 @@ static int menelaus_probe(struct i2c_client *client,
struct menelaus_chip *menelaus;
int rev = 0;
int err = 0;
+ struct device_node *np = client->dev.of_node;
struct menelaus_platform_data *menelaus_pdata =
dev_get_platdata(&client->dev);
@@ -1221,10 +1240,35 @@ static int menelaus_probe(struct i2c_client *client,
else
menelaus->vcore_hw_mode = 0;
- if (menelaus_pdata != NULL && menelaus_pdata->late_init != NULL) {
- err = menelaus_pdata->late_init(&client->dev);
- if (err < 0)
- goto fail;
+ if (menelaus_pdata != NULL) {
+ if (menelaus_pdata->late_init != NULL) {
+ err = menelaus_pdata->late_init(&client->dev);
+ if (err < 0)
+ goto fail;
+ }
+ } else if (np) {
+ u32 vcore_min;
+ u32 vcore_max;
+
+ if (!of_property_read_u32(np, "ti,vcore-min-microvolt",
+ &vcore_min) &&
+ !of_property_read_u32(np, "ti,vcore-max-microvolt",
+ &vcore_max)) {
+ err = menelaus_set_vcore_hw(vcore_max / 1000,
+ vcore_min / 1000);
+ if (err < 0) {
+ dev_err(&client->dev,
+ "could not set VCORE voltage: %d\n",
+ err);
+ goto fail;
+ }
+ }
+
+ if (of_property_read_bool(np, "ti,autosleep")) {
+ err = menelaus_auto_sleep_regulators();
+ if (err < 0)
+ goto fail;
+ }
}
menelaus_rtc_init(menelaus);
--
2.2.0
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