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Commit 025a60a7 authored by Amitkumar Karwar's avatar Amitkumar Karwar Committed by Marcel Holtmann
Browse files

Bluetooth: btmrvl: add DT-bindings for gpio-gap 



This can be used to have GPIO host wakeup method suitable for the
platform and configurable GAP for host sleep handshake.

Signed-off-by: default avatarAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: default avatarCathy Luo <cluo@marvell.com>
Signed-off-by: default avatarAvinash Patil <patila@marvell.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 098ea6bc

Documentation/devicetree/bindings/btmrvl.txt

+7 −0
Original line number Diff line number Diff line
@@ -10,8 +10,14 @@ Optional properties: 
  - btmrvl,cal-data : Calibration data downloaded to the device during

		      initialization. This is an array of 28 values(u8).



  - btmrvl,gpio-gap : gpio and gap (in msecs) combination to be

		      configured.



Example:



GPIO pin 13 is configured as a wakeup source and GAP is set to 100 msecs

in below example.



btmrvl {

	compatible = "btmrvl,cfgdata";
@@ -19,4 +25,5 @@ btmrvl { 
		0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04 0x02

		0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00 0x00

		0x00 0x00 0xf0 0x00>;

	btmrvl,gpio-gap = <0x0d64>;

};

drivers/bluetooth/btmrvl_main.c

+9 −3
Original line number Diff line number Diff line
@@ -492,13 +492,18 @@ static int btmrvl_download_cal_data(struct btmrvl_private *priv, 
	return 0;

}



static int btmrvl_cal_data_dt(struct btmrvl_private *priv)

static int btmrvl_check_device_tree(struct btmrvl_private *priv)

{

	struct device_node *dt_node;

	u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];

	int ret;

	u32 val;



	for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") {

		ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val);

		if (!ret)

			priv->btmrvl_dev.gpio_gap = val;



		ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data",

						cal_data + BT_CAL_HDR_LEN,

						BT_CAL_DATA_SIZE);
@@ -523,14 +528,15 @@ static int btmrvl_setup(struct hci_dev *hdev) 


	btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);



	btmrvl_cal_data_dt(priv);

	priv->btmrvl_dev.gpio_gap = 0xffff;



	btmrvl_check_device_tree(priv);



	btmrvl_pscan_window_reporting(priv, 0x01);



	priv->btmrvl_dev.psmode = 1;

	btmrvl_enable_ps(priv);



	priv->btmrvl_dev.gpio_gap = 0xffff;

	btmrvl_send_hscfg_cmd(priv);



	return 0;