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authorColin Foe-Parker <colin.foeparker@logicpd.com>2012-11-20 13:48:44 +0400
committerSamuel Ortiz <sameo@linux.intel.com>2012-11-21 19:07:55 +0400
commiteb433dad48b49f757255f2860db5c2bd61dcae0d (patch)
tree9cbe2fdd7ea582ff6f095dfe3a8fd0efb75ebd30 /drivers/mfd/tps65217.c
parent433e075c7f3b45c946c539ceeddc641c61adef5e (diff)
downloadlinux-eb433dad48b49f757255f2860db5c2bd61dcae0d.tar.xz
mfd: tps65217: Set PMIC to shutdown on PWR_EN toggle
Set tps65217 PMIC status to OFF if power enable toggle is supported. By setting this bit to 1 to enter PMIC to OFF state when PWR_EN pin is pulled low. Also adds a DT flag to specify that device pmic supports shutdown control or not. Signed-off-by: Colin Foe-Parker <colin.foeparker@logicpd.com> [anilkumar@ti.com: move the additions to tps65217 MFD driver] Signed-off-by: AnilKumar Ch <anilkumar@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/tps65217.c')
-rw-r--r--drivers/mfd/tps65217.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mfd/tps65217.c b/drivers/mfd/tps65217.c
index 3fb32e655254..c7f17d86db78 100644
--- a/drivers/mfd/tps65217.c
+++ b/drivers/mfd/tps65217.c
@@ -160,6 +160,7 @@ static int __devinit tps65217_probe(struct i2c_client *client,
unsigned int version;
unsigned int chip_id = ids->driver_data;
const struct of_device_id *match;
+ bool status_off = false;
int ret;
if (client->dev.of_node) {
@@ -170,6 +171,8 @@ static int __devinit tps65217_probe(struct i2c_client *client,
return -EINVAL;
}
chip_id = (unsigned int)match->data;
+ status_off = of_property_read_bool(client->dev.of_node,
+ "ti,pmic-shutdown-controller");
}
if (!chip_id) {
@@ -207,6 +210,15 @@ static int __devinit tps65217_probe(struct i2c_client *client,
return ret;
}
+ /* Set the PMIC to shutdown on PWR_EN toggle */
+ if (status_off) {
+ ret = tps65217_set_bits(tps, TPS65217_REG_STATUS,
+ TPS65217_STATUS_OFF, TPS65217_STATUS_OFF,
+ TPS65217_PROTECT_NONE);
+ if (ret)
+ dev_warn(tps->dev, "unable to set the status OFF\n");
+ }
+
dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n",
(version & TPS65217_CHIPID_CHIP_MASK) >> 4,
version & TPS65217_CHIPID_REV_MASK);