linux-kernel - [PATCH 1/4] Bluetooth: hci_qca: Update regulator_set

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Date:   Thu, 17 Oct 2019 22:24:01 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>
Cc:     linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>,
        linux-arm-msm@...r.kernel.org
Subject: [PATCH 1/4] Bluetooth: hci_qca: Update regulator_set_load() usage

Since the introduction of '5451781dadf8 ("regulator: core: Only count
load for enabled consumers")' in v5.0, the requested load of a regulator
consumer is only accounted for when said consumer is voted enabled.

So there's no need to vote for load ever time the regulator is
enabled or disabled.

Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---
 drivers/bluetooth/hci_qca.c | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index e3164c200eac..c07c529b0d81 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1393,13 +1393,6 @@ static int qca_enable_regulator(struct qca_vreg vregs,
 	if (ret)
 		return ret;
 
-	if (vregs.load_uA)
-		ret = regulator_set_load(regulator,
-					 vregs.load_uA);
-
-	if (ret)
-		return ret;
-
 	return regulator_enable(regulator);
 
 }
@@ -1409,8 +1402,6 @@ static void qca_disable_regulator(struct qca_vreg vregs,
 {
 	regulator_disable(regulator);
 	regulator_set_voltage(regulator, 0, vregs.max_uV);
-	if (vregs.load_uA)
-		regulator_set_load(regulator, 0);
 
 }
 
@@ -1462,18 +1453,30 @@ static int qca_power_setup(struct hci_uart *hu, bool on)
 static int qca_init_regulators(struct qca_power *qca,
 				const struct qca_vreg *vregs, size_t num_vregs)
 {
+	struct regulator_bulk_data *bulk;
+	int ret;
 	int i;
 
-	qca->vreg_bulk = devm_kcalloc(qca->dev, num_vregs,
-				      sizeof(struct regulator_bulk_data),
-				      GFP_KERNEL);
-	if (!qca->vreg_bulk)
+	bulk = devm_kcalloc(qca->dev, num_vregs, sizeof(*bulk), GFP_KERNEL);
+	if (!bulk)
 		return -ENOMEM;
 
 	for (i = 0; i < num_vregs; i++)
-		qca->vreg_bulk[i].supply = vregs[i].name;
+		bulk[i].supply = vregs[i].name;
+
+	ret = devm_regulator_bulk_get(qca->dev, num_vregs, bulk);
+	if (ret < 0)
+		return ret;
 
-	return devm_regulator_bulk_get(qca->dev, num_vregs, qca->vreg_bulk);
+	for (i = 0; i < num_vregs; i++) {
+		ret = regulator_set_load(bulk[i].consumer, vregs[i].load_uA);
+		if (ret)
+			return ret;
+	}
+
+	qca->vreg_bulk = bulk;
+
+	return 0;
 }
 
 static int qca_serdev_probe(struct serdev_device *serdev)
-- 
2.23.0