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Bluetooth: hci_h5: Add support for the RTL8723BS

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Implement support for the RTL8723BS chip.

Signed-off-by: Jeremy Cline <jeremy@jcline.org>
[hdegoede@redhat.com: Port from bt3wire.c to hci_h5.c, drop broken GPIO code]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Jeremy Cline 2018-08-02 16:57:20 +02:00 committed by Marcel Holtmann
parent 4eb3cbc4c4
commit b825d7c405
1 changed files with 69 additions and 0 deletions
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69
drivers/bluetooth/hci_h5.c
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@ -31,6 +31,7 @@
#include <net/bluetooth/bluetooth.h> #include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h> #include <net/bluetooth/hci_core.h>
#include "btrtl.h"
#include "hci_uart.h" #include "hci_uart.h"
#define HCI_3WIRE_ACK_PKT 0 #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); 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 = { static struct serdev_device_driver h5_serdev_driver = {
.probe = h5_serdev_probe, .probe = h5_serdev_probe,
.remove = h5_serdev_remove, .remove = h5_serdev_remove,
.driver = { .driver = {
.name = "hci_uart_h5", .name = "hci_uart_h5",
.acpi_match_table = ACPI_PTR(h5_acpi_match),
}, },
}; };