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Commit b825d7c4 authored by Jeremy Cline's avatar Jeremy Cline Committed by Marcel Holtmann
Browse files

Bluetooth: hci_h5: Add support for the RTL8723BS 



Implement support for the RTL8723BS chip.

Signed-off-by: default avatarJeremy Cline <jeremy@jcline.org>
[hdegoede@redhat.com: Port from bt3wire.c to hci_h5.c, drop broken GPIO code]
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 4eb3cbc4

drivers/bluetooth/hci_h5.c

+69 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ 
#include <net/bluetooth/bluetooth.h>

#include <net/bluetooth/hci_core.h>



#include "btrtl.h"

#include "hci_uart.h"



#define HCI_3WIRE_ACK_PKT	0
@@ -822,11 +823,79 @@ static void h5_serdev_remove(struct serdev_device *serdev) 
	hci_uart_unregister_device(&h5->serdev_hu);

}



static int h5_btrtl_setup(struct h5 *h5)

{

	struct btrtl_device_info *btrtl_dev;

	struct sk_buff *skb;

	__le32 baudrate_data;

	u32 device_baudrate;

	unsigned int controller_baudrate;

	bool flow_control;

	int err;



	btrtl_dev = btrtl_initialize(h5->hu->hdev, h5->id);

	if (IS_ERR(btrtl_dev))

		return PTR_ERR(btrtl_dev);



	err = btrtl_get_uart_settings(h5->hu->hdev, btrtl_dev,

				      &controller_baudrate, &device_baudrate,

				      &flow_control);

	if (err)

		goto out_free;



	baudrate_data = cpu_to_le32(device_baudrate);

	skb = __hci_cmd_sync(h5->hu->hdev, 0xfc17, sizeof(baudrate_data),

			     &baudrate_data, HCI_INIT_TIMEOUT);

	if (IS_ERR(skb)) {

		rtl_dev_err(h5->hu->hdev, "set baud rate command failed\n");

		err = PTR_ERR(skb);

		goto out_free;

	} else {

		kfree_skb(skb);

	}

	/* Give the device some time to set up the new baudrate. */

	usleep_range(10000, 20000);



	serdev_device_set_baudrate(h5->hu->serdev, controller_baudrate);

	serdev_device_set_flow_control(h5->hu->serdev, flow_control);



	err = btrtl_download_firmware(h5->hu->hdev, btrtl_dev);

	/* Give the device some time before the hci-core sends it a reset */

	usleep_range(10000, 20000);



out_free:

	btrtl_free(btrtl_dev);



	return err;

}



static void h5_btrtl_open(struct h5 *h5)

{

	/* Devices always start with these fixed parameters */

	serdev_device_set_flow_control(h5->hu->serdev, false);

	serdev_device_set_parity(h5->hu->serdev, SERDEV_PARITY_EVEN);

	serdev_device_set_baudrate(h5->hu->serdev, 115200);

}



static struct h5_vnd rtl_vnd = {

	.setup		= h5_btrtl_setup,

	.open		= h5_btrtl_open,

};



#ifdef CONFIG_ACPI

static const struct acpi_device_id h5_acpi_match[] = {

	{ "OBDA8723", (kernel_ulong_t)&rtl_vnd },

	{ },

};

MODULE_DEVICE_TABLE(acpi, h5_acpi_match);

#endif



static struct serdev_device_driver h5_serdev_driver = {

	.probe = h5_serdev_probe,

	.remove = h5_serdev_remove,

	.driver = {

		.name = "hci_uart_h5",

		.acpi_match_table = ACPI_PTR(h5_acpi_match),

	},

};