Add support to set voltage/current of various regulators to power
up/down
BT QCA chips attached to MSM.
Change-Id: I3600dd7bc97c753bc9cf7f8ac39d7b90bc21c67d
Signed-off-by: Rupesh Tatiya <rtatiya@xxxxxxxxxxxxxx>
---
drivers/bluetooth/Makefile | 5 +-
drivers/bluetooth/btqca_power.c | 177
++++++++++++++++++++++++++++++++++++++++
drivers/bluetooth/btqca_power.h | 71 ++++++++++++++++
3 files changed, 251 insertions(+), 2 deletions(-)
create mode 100644 drivers/bluetooth/btqca_power.c
create mode 100644 drivers/bluetooth/btqca_power.h
diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile
index 4e4e44d..f963909 100644
--- a/drivers/bluetooth/Makefile
+++ b/drivers/bluetooth/Makefile
@@ -24,8 +24,9 @@ obj-$(CONFIG_BT_WILINK) += btwilink.o
obj-$(CONFIG_BT_QCOMSMD) += btqcomsmd.o
obj-$(CONFIG_BT_BCM) += btbcm.o
obj-$(CONFIG_BT_RTL) += btrtl.o
-obj-$(CONFIG_BT_QCA) += btqca.o
-
+obj-$(CONFIG_BT_QCA) += btqca_uart.o
+btqca_uart-$(CONFIG_BT_QCA) += btqca.o
+btqca_uart-$(CONFIG_BT_QCA) += btqca_power.o
obj-$(CONFIG_BT_HCIUART_NOKIA) += hci_nokia.o
btmrvl-y := btmrvl_main.o
diff --git a/drivers/bluetooth/btqca_power.c
b/drivers/bluetooth/btqca_power.c
new file mode 100644
index 0000000..a189ff1
--- /dev/null
+++ b/drivers/bluetooth/btqca_power.c
@@ -0,0 +1,177 @@
+/* Copyright (c) 2009-2010, 2013-2018 The Linux Foundation.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+/*
+ * Bluetooth Power Switch Module
+ * controls power to external Bluetooth device
+ * with interface to power management device
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/regulator/consumer.h>
+#include <linux/of_device.h>
+#include <net/bluetooth/bluetooth.h>
+
+#include "btqca_power.h"
+
+static struct btqca_power *qca;
+
+static const struct btqca_vreg_data cherokee_data = {
+ .soc_type = BTQCA_CHEROKEE,
+ .vregs = (struct btqca_vreg []) {
+ { "vddio", 1352000, 1352000, 0 },
+ { "vddxtal", 1904000, 2040000, 0 },
+ { "vddcore", 1800000, 1800000, 1 },
+ { "vddpa", 130400, 1304000, 1 },
+ { "vddldo", 3000000, 3312000, 1 },
+ { "vddpwd", 3312000, 3600000, 0 },
+ },
+ .num_vregs = 6,
+};
+
+static const struct of_device_id btqca_power_match_table[] = {
+ { .compatible = "qca,wcn3990", .data = &cherokee_data},
+ {}
+};
+
+int btqca_get_soc_type(enum btqca_soc_t *type)
+{
+ if (!qca || !qca->vreg_data)
+ return -EINVAL;
+
+ *type = qca->vreg_data->soc_type;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btqca_get_soc_type);
+
+int btqca_power_setup(int on)
+{
+ int ret = 0;
+ int i;
+ struct btqca_vreg *vregs;
+
+ if (!qca || !qca->vreg_data || !qca->vreg_bulk)
+ return -EINVAL;
+ vregs = qca->vreg_data->vregs;
+
+ BT_DBG("on: %d", on);
+
+ if (on) {
+ for (i = 0; i < qca->vreg_data->num_vregs; i++) {
+ regulator_set_voltage(qca->vreg_bulk[i].consumer,
+ vregs[i].min_v,
+ vregs[i].max_v);
+
+ if (vregs[i].load_ua)
+ regulator_set_load(qca->vreg_bulk[i].consumer,
+ vregs[i].load_ua);
+
+ regulator_enable(qca->vreg_bulk[i].consumer);
+ }
+ } else {
+ for (i = 0; i < qca->vreg_data->num_vregs; i++) {
+ regulator_disable(qca->vreg_bulk[i].consumer);
+
+ regulator_set_voltage(qca->vreg_bulk[i].consumer,
+ 0, vregs[i].max_v);
+
+ regulator_set_load(qca->vreg_bulk[i].consumer, 0);
+ }
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(btqca_power_setup);
