2019-05-27 06:55:05 +00:00
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// SPDX-License-Identifier: GPL-2.0-or-later
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2012-07-16 13:12:02 +00:00
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/*
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*
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* Bluetooth HCI Three-wire UART driver
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*
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* Copyright (C) 2012 Intel Corporation
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*/
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2018-08-02 14:57:19 +00:00
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#include <linux/acpi.h>
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2012-07-16 13:12:02 +00:00
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#include <linux/errno.h>
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2018-08-02 14:57:21 +00:00
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#include <linux/gpio/consumer.h>
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2018-08-02 14:57:19 +00:00
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#include <linux/kernel.h>
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#include <linux/mod_devicetable.h>
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2020-02-17 08:14:55 +00:00
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#include <linux/of_device.h>
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2021-07-23 11:31:57 +00:00
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#include <linux/pm_runtime.h>
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2018-08-02 14:57:18 +00:00
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#include <linux/serdev.h>
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2012-07-16 13:12:02 +00:00
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#include <linux/skbuff.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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2018-08-02 14:57:20 +00:00
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#include "btrtl.h"
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2012-07-16 13:12:02 +00:00
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#include "hci_uart.h"
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2021-07-23 11:31:57 +00:00
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#define SUSPEND_TIMEOUT_MS 6000
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2012-07-16 13:12:06 +00:00
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#define HCI_3WIRE_ACK_PKT 0
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#define HCI_3WIRE_LINK_PKT 15
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2012-07-16 13:12:18 +00:00
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/* Sliding window size */
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#define H5_TX_WIN_MAX 4
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2012-07-16 13:12:04 +00:00
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#define H5_ACK_TIMEOUT msecs_to_jiffies(250)
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2012-07-16 13:12:09 +00:00
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#define H5_SYNC_TIMEOUT msecs_to_jiffies(100)
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2012-07-16 13:12:04 +00:00
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2012-07-16 13:12:05 +00:00
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/*
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* Maximum Three-wire packet:
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* 4 byte header + max value for 12-bit length + 2 bytes for CRC
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*/
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#define H5_MAX_LEN (4 + 0xfff + 2)
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2012-07-16 13:12:07 +00:00
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/* Convenience macros for reading Three-wire header values */
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#define H5_HDR_SEQ(hdr) ((hdr)[0] & 0x07)
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#define H5_HDR_ACK(hdr) (((hdr)[0] >> 3) & 0x07)
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#define H5_HDR_CRC(hdr) (((hdr)[0] >> 6) & 0x01)
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#define H5_HDR_RELIABLE(hdr) (((hdr)[0] >> 7) & 0x01)
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#define H5_HDR_PKT_TYPE(hdr) ((hdr)[1] & 0x0f)
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2015-11-19 09:29:11 +00:00
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#define H5_HDR_LEN(hdr) ((((hdr)[1] >> 4) & 0x0f) + ((hdr)[2] << 4))
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2012-07-16 13:12:07 +00:00
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2012-07-16 13:12:05 +00:00
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#define SLIP_DELIMITER 0xc0
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#define SLIP_ESC 0xdb
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#define SLIP_ESC_DELIM 0xdc
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#define SLIP_ESC_ESC 0xdd
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2012-07-16 13:12:19 +00:00
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/* H5 state flags */
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enum {
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2021-07-23 11:31:55 +00:00
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H5_RX_ESC, /* SLIP escape mode */
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H5_TX_ACK_REQ, /* Pending ack to send */
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H5_WAKEUP_DISABLE, /* Device cannot wake host */
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2021-07-23 11:31:56 +00:00
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H5_HW_FLOW_CONTROL, /* Use HW flow control */
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2012-07-16 13:12:19 +00:00
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};
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2012-07-16 13:12:03 +00:00
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struct h5 {
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2018-08-02 14:57:18 +00:00
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/* Must be the first member, hci_serdev.c expects this. */
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struct hci_uart serdev_hu;
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2012-07-16 13:12:05 +00:00
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struct sk_buff_head unack; /* Unack'ed packets queue */
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struct sk_buff_head rel; /* Reliable packets queue */
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struct sk_buff_head unrel; /* Unreliable packets queue */
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2012-07-16 13:12:19 +00:00
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unsigned long flags;
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2012-07-16 13:12:05 +00:00
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struct sk_buff *rx_skb; /* Receive buffer */
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size_t rx_pending; /* Expecting more bytes */
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2012-07-16 13:12:08 +00:00
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u8 rx_ack; /* Last ack number received */
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2012-07-16 13:12:03 +00:00
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2015-07-23 11:22:56 +00:00
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int (*rx_func)(struct hci_uart *hu, u8 c);
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2012-07-16 13:12:03 +00:00
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2012-07-16 13:12:05 +00:00
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struct timer_list timer; /* Retransmission timer */
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2017-10-05 00:54:29 +00:00
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struct hci_uart *hu; /* Parent HCI UART */
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2012-07-16 13:12:04 +00:00
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2012-07-16 13:12:08 +00:00
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u8 tx_seq; /* Next seq number to send */
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2012-07-16 13:12:09 +00:00
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u8 tx_ack; /* Next ack number to send */
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2012-07-16 13:12:18 +00:00
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u8 tx_win; /* Sliding window size */
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2012-07-16 13:12:14 +00:00
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2012-07-16 13:12:15 +00:00
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enum {
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H5_UNINITIALIZED,
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H5_INITIALIZED,
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H5_ACTIVE,
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} state;
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2012-07-16 13:12:16 +00:00
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enum {
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H5_AWAKE,
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H5_SLEEPING,
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H5_WAKING_UP,
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} sleep;
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2018-08-02 14:57:19 +00:00
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const struct h5_vnd *vnd;
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const char *id;
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2018-08-02 14:57:21 +00:00
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struct gpio_desc *enable_gpio;
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struct gpio_desc *device_wake_gpio;
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2018-08-02 14:57:19 +00:00
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};
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2021-07-23 11:31:55 +00:00
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enum h5_driver_info {
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H5_INFO_WAKEUP_DISABLE = BIT(0),
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};
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2018-08-02 14:57:19 +00:00
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struct h5_vnd {
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int (*setup)(struct h5 *h5);
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void (*open)(struct h5 *h5);
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void (*close)(struct h5 *h5);
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2018-10-30 13:17:22 +00:00
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int (*suspend)(struct h5 *h5);
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int (*resume)(struct h5 *h5);
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2018-08-02 14:57:21 +00:00
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const struct acpi_gpio_mapping *acpi_gpio_map;
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2012-07-16 13:12:03 +00:00
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};
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2021-07-23 11:31:55 +00:00
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struct h5_device_data {
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uint32_t driver_info;
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struct h5_vnd *vnd;
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};
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2012-07-16 13:12:05 +00:00
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static void h5_reset_rx(struct h5 *h5);
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2012-07-16 13:12:15 +00:00
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static void h5_link_control(struct hci_uart *hu, const void *data, size_t len)
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{
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struct h5 *h5 = hu->priv;
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struct sk_buff *nskb;
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nskb = alloc_skb(3, GFP_ATOMIC);
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if (!nskb)
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return;
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2015-11-05 06:33:56 +00:00
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hci_skb_pkt_type(nskb) = HCI_3WIRE_LINK_PKT;
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2012-07-16 13:12:15 +00:00
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networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
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-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
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-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
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-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
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-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 12:29:20 +00:00
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skb_put_data(nskb, data, len);
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2012-07-16 13:12:15 +00:00
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skb_queue_tail(&h5->unrel, nskb);
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}
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2012-07-16 13:12:18 +00:00
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static u8 h5_cfg_field(struct h5 *h5)
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{
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/* Sliding window size (first 3 bits) */
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2015-11-26 14:49:34 +00:00
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return h5->tx_win & 0x07;
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2012-07-16 13:12:18 +00:00
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}
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2017-10-05 00:54:29 +00:00
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static void h5_timed_event(struct timer_list *t)
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2012-07-16 13:12:04 +00:00
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{
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2012-07-16 13:12:15 +00:00
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const unsigned char sync_req[] = { 0x01, 0x7e };
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2015-12-10 15:03:43 +00:00
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unsigned char conf_req[3] = { 0x03, 0xfc };
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2017-10-05 00:54:29 +00:00
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struct h5 *h5 = from_timer(h5, t, timer);
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struct hci_uart *hu = h5->hu;
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2012-07-16 13:12:04 +00:00
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struct sk_buff *skb;
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unsigned long flags;
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2012-07-16 13:12:16 +00:00
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BT_DBG("%s", hu->hdev->name);
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2012-07-16 13:12:15 +00:00
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if (h5->state == H5_UNINITIALIZED)
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h5_link_control(hu, sync_req, sizeof(sync_req));
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2012-07-16 13:12:18 +00:00
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if (h5->state == H5_INITIALIZED) {
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conf_req[2] = h5_cfg_field(h5);
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2012-07-16 13:12:15 +00:00
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h5_link_control(hu, conf_req, sizeof(conf_req));
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2012-07-16 13:12:18 +00:00
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}
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2012-07-16 13:12:15 +00:00
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if (h5->state != H5_ACTIVE) {
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mod_timer(&h5->timer, jiffies + H5_SYNC_TIMEOUT);
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goto wakeup;
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}
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2012-07-16 13:12:16 +00:00
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if (h5->sleep != H5_AWAKE) {
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h5->sleep = H5_SLEEPING;
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goto wakeup;
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}
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2012-07-16 13:12:04 +00:00
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BT_DBG("hu %p retransmitting %u pkts", hu, h5->unack.qlen);
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spin_lock_irqsave_nested(&h5->unack.lock, flags, SINGLE_DEPTH_NESTING);
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while ((skb = __skb_dequeue_tail(&h5->unack)) != NULL) {
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2012-07-16 13:12:08 +00:00
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h5->tx_seq = (h5->tx_seq - 1) & 0x07;
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2012-07-16 13:12:04 +00:00
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skb_queue_head(&h5->rel, skb);
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}
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spin_unlock_irqrestore(&h5->unack.lock, flags);
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2012-07-16 13:12:15 +00:00
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wakeup:
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2012-07-16 13:12:04 +00:00
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hci_uart_tx_wakeup(hu);
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}
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2014-10-08 14:54:28 +00:00
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static void h5_peer_reset(struct hci_uart *hu)
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{
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struct h5 *h5 = hu->priv;
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2020-03-09 21:57:23 +00:00
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bt_dev_err(hu->hdev, "Peer device has reset");
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2014-10-08 14:54:28 +00:00
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h5->state = H5_UNINITIALIZED;
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del_timer(&h5->timer);
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skb_queue_purge(&h5->rel);
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skb_queue_purge(&h5->unrel);
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skb_queue_purge(&h5->unack);
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h5->tx_seq = 0;
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h5->tx_ack = 0;
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2014-11-02 07:15:39 +00:00
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/* Send reset request to upper stack */
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hci_reset_dev(hu->hdev);
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2014-10-08 14:54:28 +00:00
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}
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2012-07-16 13:12:02 +00:00
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static int h5_open(struct hci_uart *hu)
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{
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2012-07-16 13:12:03 +00:00
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struct h5 *h5;
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2012-07-16 13:12:09 +00:00
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const unsigned char sync[] = { 0x01, 0x7e };
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2012-07-16 13:12:03 +00:00
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BT_DBG("hu %p", hu);
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2018-08-02 14:57:18 +00:00
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if (hu->serdev) {
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h5 = serdev_device_get_drvdata(hu->serdev);
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} else {
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h5 = kzalloc(sizeof(*h5), GFP_KERNEL);
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if (!h5)
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return -ENOMEM;
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}
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2012-07-16 13:12:03 +00:00
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hu->priv = h5;
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2017-10-05 00:54:29 +00:00
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h5->hu = hu;
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2012-07-16 13:12:03 +00:00
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skb_queue_head_init(&h5->unack);
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skb_queue_head_init(&h5->rel);
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skb_queue_head_init(&h5->unrel);
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2012-07-16 13:12:05 +00:00
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h5_reset_rx(h5);
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2017-10-05 00:54:29 +00:00
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timer_setup(&h5->timer, h5_timed_event, 0);
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2012-07-16 13:12:04 +00:00
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2012-07-16 13:12:18 +00:00
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h5->tx_win = H5_TX_WIN_MAX;
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2018-08-02 14:57:19 +00:00
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if (h5->vnd && h5->vnd->open)
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h5->vnd->open(h5);
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2012-07-16 13:12:12 +00:00
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set_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags);
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2012-07-16 13:12:09 +00:00
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/* Send initial sync request */
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h5_link_control(hu, sync, sizeof(sync));
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mod_timer(&h5->timer, jiffies + H5_SYNC_TIMEOUT);
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2012-07-16 13:12:03 +00:00
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return 0;
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2012-07-16 13:12:02 +00:00
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}
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static int h5_close(struct hci_uart *hu)
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{
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2012-07-16 13:12:03 +00:00
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struct h5 *h5 = hu->priv;
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2014-02-18 08:48:08 +00:00
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del_timer_sync(&h5->timer);
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2012-07-16 13:12:03 +00:00
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skb_queue_purge(&h5->unack);
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skb_queue_purge(&h5->rel);
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skb_queue_purge(&h5->unrel);
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2020-10-16 13:14:47 +00:00
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kfree_skb(h5->rx_skb);
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h5->rx_skb = NULL;
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2018-08-02 14:57:19 +00:00
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if (h5->vnd && h5->vnd->close)
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h5->vnd->close(h5);
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2020-11-22 12:17:25 +00:00
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if (!hu->serdev)
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kfree(h5);
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2012-07-16 13:12:03 +00:00
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return 0;
|
2012-07-16 13:12:02 +00:00
|
|
|
}
|
|
|
|
|
2018-08-02 14:57:19 +00:00
|
|
|
static int h5_setup(struct hci_uart *hu)
|
|
|
|
{
|
|
|
|
struct h5 *h5 = hu->priv;
|
|
|
|
|
|
|
|
if (h5->vnd && h5->vnd->setup)
|
|
|
|
return h5->vnd->setup(h5);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:08 +00:00
|
|
|
static void h5_pkt_cull(struct h5 *h5)
|
|
|
|
{
|
|
|
|
struct sk_buff *skb, *tmp;
|
|
|
|
unsigned long flags;
|
|
|
|
int i, to_remove;
|
|
|
|
u8 seq;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&h5->unack.lock, flags);
|
|
|
|
|
|
|
|
to_remove = skb_queue_len(&h5->unack);
|
2012-07-16 13:12:09 +00:00
|
|
|
if (to_remove == 0)
|
|
|
|
goto unlock;
|
2012-07-16 13:12:08 +00:00
|
|
|
|
|
|
|
seq = h5->tx_seq;
|
|
|
|
|
|
|
|
while (to_remove > 0) {
|
|
|
|
if (h5->rx_ack == seq)
|
|
|
|
break;
|
|
|
|
|
|
|
|
to_remove--;
|
2014-08-08 17:07:16 +00:00
|
|
|
seq = (seq - 1) & 0x07;
|
2012-07-16 13:12:08 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (seq != h5->rx_ack)
|
|
|
|
BT_ERR("Controller acked invalid packet");
|
|
|
|
|
|
|
|
i = 0;
|
|
|
|
skb_queue_walk_safe(&h5->unack, skb, tmp) {
|
|
|
|
if (i++ >= to_remove)
|
|
|
|
break;
|
|
|
|
|
|
|
|
__skb_unlink(skb, &h5->unack);
|
|
|
|
kfree_skb(skb);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (skb_queue_empty(&h5->unack))
|
|
|
|
del_timer(&h5->timer);
|
|
|
|
|
2012-07-16 13:12:09 +00:00
|
|
|
unlock:
|
2012-07-16 13:12:08 +00:00
|
|
|
spin_unlock_irqrestore(&h5->unack.lock, flags);
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:05 +00:00
|
|
|
static void h5_handle_internal_rx(struct hci_uart *hu)
|
|
|
|
{
|
2012-07-16 13:12:09 +00:00
|
|
|
struct h5 *h5 = hu->priv;
|
|
|
|
const unsigned char sync_req[] = { 0x01, 0x7e };
|
|
|
|
const unsigned char sync_rsp[] = { 0x02, 0x7d };
|
2015-12-10 15:03:43 +00:00
|
|
|
unsigned char conf_req[3] = { 0x03, 0xfc };
|
2012-07-16 13:12:18 +00:00
|
|
|
const unsigned char conf_rsp[] = { 0x04, 0x7b };
|
2012-07-16 13:12:14 +00:00
|
|
|
const unsigned char wakeup_req[] = { 0x05, 0xfa };
|
|
|
|
const unsigned char woken_req[] = { 0x06, 0xf9 };
|
|
|
|
const unsigned char sleep_req[] = { 0x07, 0x78 };
|
2012-07-16 13:12:09 +00:00
|
|
|
const unsigned char *hdr = h5->rx_skb->data;
|
|
|
|
const unsigned char *data = &h5->rx_skb->data[4];
|
|
|
|
|
2012-07-16 13:12:05 +00:00
|
|
|
BT_DBG("%s", hu->hdev->name);
|
2012-07-16 13:12:09 +00:00
|
|
|
|
|
|
|
if (H5_HDR_PKT_TYPE(hdr) != HCI_3WIRE_LINK_PKT)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (H5_HDR_LEN(hdr) < 2)
|
|
|
|
return;
|
|
|
|
|
2012-07-16 13:12:18 +00:00
|
|
|
conf_req[2] = h5_cfg_field(h5);
|
|
|
|
|
2012-07-16 13:12:09 +00:00
|
|
|
if (memcmp(data, sync_req, 2) == 0) {
|
2014-10-08 14:54:28 +00:00
|
|
|
if (h5->state == H5_ACTIVE)
|
|
|
|
h5_peer_reset(hu);
|
2012-07-16 13:12:09 +00:00
|
|
|
h5_link_control(hu, sync_rsp, 2);
|
|
|
|
} else if (memcmp(data, sync_rsp, 2) == 0) {
|
2014-10-08 14:54:28 +00:00
|
|
|
if (h5->state == H5_ACTIVE)
|
|
|
|
h5_peer_reset(hu);
|
2012-07-16 13:12:15 +00:00
|
|
|
h5->state = H5_INITIALIZED;
|
2012-07-16 13:12:09 +00:00
|
|
|
h5_link_control(hu, conf_req, 3);
|
|
|
|
} else if (memcmp(data, conf_req, 2) == 0) {
|
|
|
|
h5_link_control(hu, conf_rsp, 2);
|
|
|
|
h5_link_control(hu, conf_req, 3);
|
|
|
|
} else if (memcmp(data, conf_rsp, 2) == 0) {
|
2012-07-16 13:12:18 +00:00
|
|
|
if (H5_HDR_LEN(hdr) > 2)
|
2015-11-26 14:49:33 +00:00
|
|
|
h5->tx_win = (data[2] & 0x07);
|
2012-07-16 13:12:18 +00:00
|
|
|
BT_DBG("Three-wire init complete. tx_win %u", h5->tx_win);
|
2012-07-16 13:12:15 +00:00
|
|
|
h5->state = H5_ACTIVE;
|
2012-07-16 13:12:12 +00:00
|
|
|
hci_uart_init_ready(hu);
|
2012-07-16 13:12:09 +00:00
|
|
|
return;
|
2012-07-16 13:12:14 +00:00
|
|
|
} else if (memcmp(data, sleep_req, 2) == 0) {
|
|
|
|
BT_DBG("Peer went to sleep");
|
2012-07-16 13:12:16 +00:00
|
|
|
h5->sleep = H5_SLEEPING;
|
|
|
|
return;
|
2012-07-16 13:12:14 +00:00
|
|
|
} else if (memcmp(data, woken_req, 2) == 0) {
|
|
|
|
BT_DBG("Peer woke up");
|
2012-07-16 13:12:16 +00:00
|
|
|
h5->sleep = H5_AWAKE;
|
|
|
|
} else if (memcmp(data, wakeup_req, 2) == 0) {
|
|
|
|
BT_DBG("Peer requested wakeup");
|
|
|
|
h5_link_control(hu, woken_req, 2);
|
|
|
|
h5->sleep = H5_AWAKE;
|
2012-07-16 13:12:09 +00:00
|
|
|
} else {
|
|
|
|
BT_DBG("Link Control: 0x%02hhx 0x%02hhx", data[0], data[1]);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
hci_uart_tx_wakeup(hu);
|
2012-07-16 13:12:05 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void h5_complete_rx_pkt(struct hci_uart *hu)
|
|
|
|
{
|
|
|
|
struct h5 *h5 = hu->priv;
|
2012-07-16 13:12:08 +00:00
|
|
|
const unsigned char *hdr = h5->rx_skb->data;
|
2012-07-16 13:12:05 +00:00
|
|
|
|
2012-07-16 13:12:08 +00:00
|
|
|
if (H5_HDR_RELIABLE(hdr)) {
|
2012-07-16 13:12:09 +00:00
|
|
|
h5->tx_ack = (h5->tx_ack + 1) % 8;
|
2012-07-16 13:12:19 +00:00
|
|
|
set_bit(H5_TX_ACK_REQ, &h5->flags);
|
2012-07-16 13:12:09 +00:00
|
|
|
hci_uart_tx_wakeup(hu);
|
2012-07-16 13:12:08 +00:00
|
|
|
}
|
2012-07-16 13:12:05 +00:00
|
|
|
|
2012-07-16 13:12:08 +00:00
|
|
|
h5->rx_ack = H5_HDR_ACK(hdr);
|
|
|
|
|
|
|
|
h5_pkt_cull(h5);
|
|
|
|
|
|
|
|
switch (H5_HDR_PKT_TYPE(hdr)) {
|
2012-07-16 13:12:05 +00:00
|
|
|
case HCI_EVENT_PKT:
|
|
|
|
case HCI_ACLDATA_PKT:
|
|
|
|
case HCI_SCODATA_PKT:
|
2020-01-15 21:02:20 +00:00
|
|
|
case HCI_ISODATA_PKT:
|
2015-11-05 06:33:56 +00:00
|
|
|
hci_skb_pkt_type(h5->rx_skb) = H5_HDR_PKT_TYPE(hdr);
|
2012-07-16 13:12:05 +00:00
|
|
|
|
|
|
|
/* Remove Three-wire header */
|
|
|
|
skb_pull(h5->rx_skb, 4);
|
|
|
|
|
2013-10-10 23:52:43 +00:00
|
|
|
hci_recv_frame(hu->hdev, h5->rx_skb);
|
2012-07-16 13:12:05 +00:00
|
|
|
h5->rx_skb = NULL;
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
h5_handle_internal_rx(hu);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
h5_reset_rx(h5);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int h5_rx_crc(struct hci_uart *hu, unsigned char c)
|
|
|
|
{
|
|
|
|
h5_complete_rx_pkt(hu);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int h5_rx_payload(struct hci_uart *hu, unsigned char c)
|
|
|
|
{
|
|
|
|
struct h5 *h5 = hu->priv;
|
|
|
|
const unsigned char *hdr = h5->rx_skb->data;
|
|
|
|
|
2012-07-16 13:12:08 +00:00
|
|
|
if (H5_HDR_CRC(hdr)) {
|
2012-07-16 13:12:05 +00:00
|
|
|
h5->rx_func = h5_rx_crc;
|
|
|
|
h5->rx_pending = 2;
|
|
|
|
} else {
|
|
|
|
h5_complete_rx_pkt(hu);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int h5_rx_3wire_hdr(struct hci_uart *hu, unsigned char c)
|
|
|
|
{
|
|
|
|
struct h5 *h5 = hu->priv;
|
|
|
|
const unsigned char *hdr = h5->rx_skb->data;
|
|
|
|
|
2012-07-16 13:12:09 +00:00
|
|
|
BT_DBG("%s rx: seq %u ack %u crc %u rel %u type %u len %u",
|
|
|
|
hu->hdev->name, H5_HDR_SEQ(hdr), H5_HDR_ACK(hdr),
|
|
|
|
H5_HDR_CRC(hdr), H5_HDR_RELIABLE(hdr), H5_HDR_PKT_TYPE(hdr),
|
|
|
|
H5_HDR_LEN(hdr));
|
|
|
|
|
2012-07-16 13:12:05 +00:00
|
|
|
if (((hdr[0] + hdr[1] + hdr[2] + hdr[3]) & 0xff) != 0xff) {
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Invalid header checksum");
|
2012-07-16 13:12:05 +00:00
|
|
|
h5_reset_rx(h5);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:09 +00:00
|
|
|
if (H5_HDR_RELIABLE(hdr) && H5_HDR_SEQ(hdr) != h5->tx_ack) {
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Out-of-order packet arrived (%u != %u)",
|
|
|
|
H5_HDR_SEQ(hdr), h5->tx_ack);
|
2012-07-16 13:12:08 +00:00
|
|
|
h5_reset_rx(h5);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:15 +00:00
|
|
|
if (h5->state != H5_ACTIVE &&
|
|
|
|
H5_HDR_PKT_TYPE(hdr) != HCI_3WIRE_LINK_PKT) {
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Non-link packet received in non-active state");
|
2012-07-16 13:12:15 +00:00
|
|
|
h5_reset_rx(h5);
|
2014-06-23 15:42:44 +00:00
|
|
|
return 0;
|
2012-07-16 13:12:15 +00:00
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:05 +00:00
|
|
|
h5->rx_func = h5_rx_payload;
|
2012-07-16 13:12:08 +00:00
|
|
|
h5->rx_pending = H5_HDR_LEN(hdr);
|
2012-07-16 13:12:05 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int h5_rx_pkt_start(struct hci_uart *hu, unsigned char c)
|
|
|
|
{
|
|
|
|
struct h5 *h5 = hu->priv;
|
|
|
|
|
|
|
|
if (c == SLIP_DELIMITER)
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
h5->rx_func = h5_rx_3wire_hdr;
|
|
|
|
h5->rx_pending = 4;
|
|
|
|
|
|
|
|
h5->rx_skb = bt_skb_alloc(H5_MAX_LEN, GFP_ATOMIC);
|
|
|
|
if (!h5->rx_skb) {
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Can't allocate mem for new packet");
|
2012-07-16 13:12:05 +00:00
|
|
|
h5_reset_rx(h5);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
2015-09-30 13:02:05 +00:00
|
|
|
h5->rx_skb->dev = (void *)hu->hdev;
|
2012-07-16 13:12:05 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int h5_rx_delimiter(struct hci_uart *hu, unsigned char c)
|
|
|
|
{
|
|
|
|
struct h5 *h5 = hu->priv;
|
|
|
|
|
|
|
|
if (c == SLIP_DELIMITER)
|
|
|
|
h5->rx_func = h5_rx_pkt_start;
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void h5_unslip_one_byte(struct h5 *h5, unsigned char c)
|
|
|
|
{
|
|
|
|
const u8 delim = SLIP_DELIMITER, esc = SLIP_ESC;
|
|
|
|
const u8 *byte = &c;
|
|
|
|
|
2012-07-16 13:12:19 +00:00
|
|
|
if (!test_bit(H5_RX_ESC, &h5->flags) && c == SLIP_ESC) {
|
|
|
|
set_bit(H5_RX_ESC, &h5->flags);
|
2012-07-16 13:12:05 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:19 +00:00
|
|
|
if (test_and_clear_bit(H5_RX_ESC, &h5->flags)) {
|
2012-07-16 13:12:05 +00:00
|
|
|
switch (c) {
|
|
|
|
case SLIP_ESC_DELIM:
|
|
|
|
byte = &delim;
|
|
|
|
break;
|
|
|
|
case SLIP_ESC_ESC:
|
|
|
|
byte = &esc;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
BT_ERR("Invalid esc byte 0x%02hhx", c);
|
|
|
|
h5_reset_rx(h5);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 12:29:20 +00:00
|
|
|
skb_put_data(h5->rx_skb, byte, 1);
|
2012-07-16 13:12:05 +00:00
|
|
|
h5->rx_pending--;
|
|
|
|
|
2019-04-23 14:50:22 +00:00
|
|
|
BT_DBG("unslipped 0x%02hhx, rx_pending %zu", *byte, h5->rx_pending);
|
2012-07-16 13:12:05 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void h5_reset_rx(struct h5 *h5)
|
|
|
|
{
|
|
|
|
if (h5->rx_skb) {
|
|
|
|
kfree_skb(h5->rx_skb);
|
|
|
|
h5->rx_skb = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
h5->rx_func = h5_rx_delimiter;
|
|
|
|
h5->rx_pending = 0;
|
2012-07-16 13:12:19 +00:00
|
|
|
clear_bit(H5_RX_ESC, &h5->flags);
|
2012-07-16 13:12:05 +00:00
|
|
|
}
|
|
|
|
|
2015-04-05 03:59:41 +00:00
|
|
|
static int h5_recv(struct hci_uart *hu, const void *data, int count)
|
2012-07-16 13:12:02 +00:00
|
|
|
{
|
2012-07-16 13:12:05 +00:00
|
|
|
struct h5 *h5 = hu->priv;
|
2015-04-05 03:59:41 +00:00
|
|
|
const unsigned char *ptr = data;
|
2012-07-16 13:12:05 +00:00
|
|
|
|
2012-07-16 13:12:13 +00:00
|
|
|
BT_DBG("%s pending %zu count %d", hu->hdev->name, h5->rx_pending,
|
|
|
|
count);
|
2012-07-16 13:12:05 +00:00
|
|
|
|
|
|
|
while (count > 0) {
|
|
|
|
int processed;
|
|
|
|
|
|
|
|
if (h5->rx_pending > 0) {
|
|
|
|
if (*ptr == SLIP_DELIMITER) {
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Too short H5 packet");
|
2012-07-16 13:12:05 +00:00
|
|
|
h5_reset_rx(h5);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
h5_unslip_one_byte(h5, *ptr);
|
|
|
|
|
|
|
|
ptr++; count--;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
processed = h5->rx_func(hu, *ptr);
|
|
|
|
if (processed < 0)
|
|
|
|
return processed;
|
|
|
|
|
|
|
|
ptr += processed;
|
|
|
|
count -= processed;
|
|
|
|
}
|
|
|
|
|
2021-09-02 20:27:56 +00:00
|
|
|
if (hu->serdev) {
|
|
|
|
pm_runtime_get(&hu->serdev->dev);
|
|
|
|
pm_runtime_mark_last_busy(&hu->serdev->dev);
|
|
|
|
pm_runtime_put_autosuspend(&hu->serdev->dev);
|
|
|
|
}
|
2021-07-23 11:31:57 +00:00
|
|
|
|
2012-07-16 13:12:05 +00:00
|
|
|
return 0;
|
2012-07-16 13:12:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int h5_enqueue(struct hci_uart *hu, struct sk_buff *skb)
|
|
|
|
{
|
2012-07-16 13:12:03 +00:00
|
|
|
struct h5 *h5 = hu->priv;
|
|
|
|
|
|
|
|
if (skb->len > 0xfff) {
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Packet too long (%u bytes)", skb->len);
|
2012-07-16 13:12:03 +00:00
|
|
|
kfree_skb(skb);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:15 +00:00
|
|
|
if (h5->state != H5_ACTIVE) {
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Ignoring HCI data in non-active state");
|
2012-07-16 13:12:15 +00:00
|
|
|
kfree_skb(skb);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-11-05 06:33:56 +00:00
|
|
|
switch (hci_skb_pkt_type(skb)) {
|
2012-07-16 13:12:03 +00:00
|
|
|
case HCI_ACLDATA_PKT:
|
|
|
|
case HCI_COMMAND_PKT:
|
|
|
|
skb_queue_tail(&h5->rel, skb);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case HCI_SCODATA_PKT:
|
2020-01-15 21:02:20 +00:00
|
|
|
case HCI_ISODATA_PKT:
|
2012-07-16 13:12:03 +00:00
|
|
|
skb_queue_tail(&h5->unrel, skb);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Unknown packet type %u", hci_skb_pkt_type(skb));
|
2012-07-16 13:12:03 +00:00
|
|
|
kfree_skb(skb);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2022-03-13 17:49:36 +00:00
|
|
|
if (hu->serdev) {
|
|
|
|
pm_runtime_get_sync(&hu->serdev->dev);
|
|
|
|
pm_runtime_mark_last_busy(&hu->serdev->dev);
|
|
|
|
pm_runtime_put_autosuspend(&hu->serdev->dev);
|
|
|
|
}
|
2021-07-23 11:31:57 +00:00
|
|
|
|
2012-07-16 13:12:03 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:06 +00:00
|
|
|
static void h5_slip_delim(struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
const char delim = SLIP_DELIMITER;
|
|
|
|
|
networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 12:29:20 +00:00
|
|
|
skb_put_data(skb, &delim, 1);
|
2012-07-16 13:12:06 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void h5_slip_one_byte(struct sk_buff *skb, u8 c)
|
|
|
|
{
|
|
|
|
const char esc_delim[2] = { SLIP_ESC, SLIP_ESC_DELIM };
|
|
|
|
const char esc_esc[2] = { SLIP_ESC, SLIP_ESC_ESC };
|
|
|
|
|
|
|
|
switch (c) {
|
|
|
|
case SLIP_DELIMITER:
|
networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 12:29:20 +00:00
|
|
|
skb_put_data(skb, &esc_delim, 2);
|
2012-07-16 13:12:06 +00:00
|
|
|
break;
|
|
|
|
case SLIP_ESC:
|
networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 12:29:20 +00:00
|
|
|
skb_put_data(skb, &esc_esc, 2);
|
2012-07-16 13:12:06 +00:00
|
|
|
break;
|
|
|
|
default:
|
networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 12:29:20 +00:00
|
|
|
skb_put_data(skb, &c, 1);
|
2012-07-16 13:12:06 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:17 +00:00
|
|
|
static bool valid_packet_type(u8 type)
|
|
|
|
{
|
|
|
|
switch (type) {
|
|
|
|
case HCI_ACLDATA_PKT:
|
|
|
|
case HCI_COMMAND_PKT:
|
|
|
|
case HCI_SCODATA_PKT:
|
2020-01-15 21:02:20 +00:00
|
|
|
case HCI_ISODATA_PKT:
|
2012-07-16 13:12:17 +00:00
|
|
|
case HCI_3WIRE_LINK_PKT:
|
|
|
|
case HCI_3WIRE_ACK_PKT:
|
|
|
|
return true;
|
|
|
|
default:
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct sk_buff *h5_prepare_pkt(struct hci_uart *hu, u8 pkt_type,
|
|
|
|
const u8 *data, size_t len)
|
2012-07-16 13:12:03 +00:00
|
|
|
{
|
2012-07-16 13:12:09 +00:00
|
|
|
struct h5 *h5 = hu->priv;
|
2012-07-16 13:12:06 +00:00
|
|
|
struct sk_buff *nskb;
|
|
|
|
u8 hdr[4];
|
|
|
|
int i;
|
|
|
|
|
2012-07-16 13:12:17 +00:00
|
|
|
if (!valid_packet_type(pkt_type)) {
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Unknown packet type %u", pkt_type);
|
2012-07-16 13:12:17 +00:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:06 +00:00
|
|
|
/*
|
|
|
|
* Max len of packet: (original len + 4 (H5 hdr) + 2 (crc)) * 2
|
|
|
|
* (because bytes 0xc0 and 0xdb are escaped, worst case is when
|
|
|
|
* the packet is all made of 0xc0 and 0xdb) + 2 (0xc0
|
|
|
|
* delimiters at start and end).
|
|
|
|
*/
|
|
|
|
nskb = alloc_skb((len + 6) * 2 + 2, GFP_ATOMIC);
|
|
|
|
if (!nskb)
|
|
|
|
return NULL;
|
|
|
|
|
2015-11-05 06:33:56 +00:00
|
|
|
hci_skb_pkt_type(nskb) = pkt_type;
|
2012-07-16 13:12:06 +00:00
|
|
|
|
|
|
|
h5_slip_delim(nskb);
|
|
|
|
|
2012-07-16 13:12:09 +00:00
|
|
|
hdr[0] = h5->tx_ack << 3;
|
2012-07-16 13:12:19 +00:00
|
|
|
clear_bit(H5_TX_ACK_REQ, &h5->flags);
|
2012-07-16 13:12:06 +00:00
|
|
|
|
2012-07-16 13:12:17 +00:00
|
|
|
/* Reliable packet? */
|
|
|
|
if (pkt_type == HCI_ACLDATA_PKT || pkt_type == HCI_COMMAND_PKT) {
|
2012-07-16 13:12:06 +00:00
|
|
|
hdr[0] |= 1 << 7;
|
2012-07-16 13:12:08 +00:00
|
|
|
hdr[0] |= h5->tx_seq;
|
|
|
|
h5->tx_seq = (h5->tx_seq + 1) % 8;
|
2012-07-16 13:12:06 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
hdr[1] = pkt_type | ((len & 0x0f) << 4);
|
|
|
|
hdr[2] = len >> 4;
|
|
|
|
hdr[3] = ~((hdr[0] + hdr[1] + hdr[2]) & 0xff);
|
|
|
|
|
2012-07-16 13:12:09 +00:00
|
|
|
BT_DBG("%s tx: seq %u ack %u crc %u rel %u type %u len %u",
|
|
|
|
hu->hdev->name, H5_HDR_SEQ(hdr), H5_HDR_ACK(hdr),
|
|
|
|
H5_HDR_CRC(hdr), H5_HDR_RELIABLE(hdr), H5_HDR_PKT_TYPE(hdr),
|
|
|
|
H5_HDR_LEN(hdr));
|
|
|
|
|
2012-07-16 13:12:06 +00:00
|
|
|
for (i = 0; i < 4; i++)
|
|
|
|
h5_slip_one_byte(nskb, hdr[i]);
|
|
|
|
|
|
|
|
for (i = 0; i < len; i++)
|
|
|
|
h5_slip_one_byte(nskb, data[i]);
|
|
|
|
|
|
|
|
h5_slip_delim(nskb);
|
|
|
|
|
|
|
|
return nskb;
|
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:02 +00:00
|
|
|
static struct sk_buff *h5_dequeue(struct hci_uart *hu)
|
|
|
|
{
|
2012-07-16 13:12:03 +00:00
|
|
|
struct h5 *h5 = hu->priv;
|
2012-07-16 13:12:04 +00:00
|
|
|
unsigned long flags;
|
2012-07-16 13:12:03 +00:00
|
|
|
struct sk_buff *skb, *nskb;
|
|
|
|
|
2012-07-16 13:12:16 +00:00
|
|
|
if (h5->sleep != H5_AWAKE) {
|
|
|
|
const unsigned char wakeup_req[] = { 0x05, 0xfa };
|
|
|
|
|
|
|
|
if (h5->sleep == H5_WAKING_UP)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
h5->sleep = H5_WAKING_UP;
|
|
|
|
BT_DBG("Sending wakeup request");
|
|
|
|
|
|
|
|
mod_timer(&h5->timer, jiffies + HZ / 100);
|
|
|
|
return h5_prepare_pkt(hu, HCI_3WIRE_LINK_PKT, wakeup_req, 2);
|
|
|
|
}
|
|
|
|
|
2013-08-12 15:46:00 +00:00
|
|
|
skb = skb_dequeue(&h5->unrel);
|
2015-09-30 13:02:05 +00:00
|
|
|
if (skb) {
|
2015-11-05 06:33:56 +00:00
|
|
|
nskb = h5_prepare_pkt(hu, hci_skb_pkt_type(skb),
|
2012-07-16 13:12:06 +00:00
|
|
|
skb->data, skb->len);
|
2012-07-16 13:12:03 +00:00
|
|
|
if (nskb) {
|
|
|
|
kfree_skb(skb);
|
|
|
|
return nskb;
|
|
|
|
}
|
|
|
|
|
|
|
|
skb_queue_head(&h5->unrel, skb);
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Could not dequeue pkt because alloc_skb failed");
|
2012-07-16 13:12:03 +00:00
|
|
|
}
|
|
|
|
|
2012-07-16 13:12:04 +00:00
|
|
|
spin_lock_irqsave_nested(&h5->unack.lock, flags, SINGLE_DEPTH_NESTING);
|
|
|
|
|
2012-07-16 13:12:18 +00:00
|
|
|
if (h5->unack.qlen >= h5->tx_win)
|
2012-07-16 13:12:04 +00:00
|
|
|
goto unlock;
|
|
|
|
|
2013-08-12 15:46:00 +00:00
|
|
|
skb = skb_dequeue(&h5->rel);
|
2015-09-30 13:02:05 +00:00
|
|
|
if (skb) {
|
2015-11-05 06:33:56 +00:00
|
|
|
nskb = h5_prepare_pkt(hu, hci_skb_pkt_type(skb),
|
2012-07-16 13:12:06 +00:00
|
|
|
skb->data, skb->len);
|
2012-07-16 13:12:04 +00:00
|
|
|
if (nskb) {
|
|
|
|
__skb_queue_tail(&h5->unack, skb);
|
|
|
|
mod_timer(&h5->timer, jiffies + H5_ACK_TIMEOUT);
|
|
|
|
spin_unlock_irqrestore(&h5->unack.lock, flags);
|
|
|
|
return nskb;
|
|
|
|
}
|
|
|
|
|
|
|
|
skb_queue_head(&h5->rel, skb);
|
2020-03-09 21:57:23 +00:00
|
|
|
bt_dev_err(hu->hdev, "Could not dequeue pkt because alloc_skb failed");
|
2012-07-16 13:12:04 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
unlock:
|
|
|
|
spin_unlock_irqrestore(&h5->unack.lock, flags);
|
|
|
|
|
2012-07-16 13:12:19 +00:00
|
|
|
if (test_bit(H5_TX_ACK_REQ, &h5->flags))
|
2012-07-16 13:12:09 +00:00
|
|
|
return h5_prepare_pkt(hu, HCI_3WIRE_ACK_PKT, NULL, 0);
|
2012-07-16 13:12:03 +00:00
|
|
|
|
2012-07-16 13:12:02 +00:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int h5_flush(struct hci_uart *hu)
|
|
|
|
{
|
2012-07-16 13:12:03 +00:00
|
|
|
BT_DBG("hu %p", hu);
|
|
|
|
return 0;
|
2012-07-16 13:12:02 +00:00
|
|
|
}
|
|
|
|
|
2015-04-05 05:11:43 +00:00
|
|
|
static const struct hci_uart_proto h5p = {
|
2012-07-16 13:12:02 +00:00
|
|
|
.id = HCI_UART_3WIRE,
|
2015-04-05 05:27:34 +00:00
|
|
|
.name = "Three-wire (H5)",
|
2012-07-16 13:12:02 +00:00
|
|
|
.open = h5_open,
|
|
|
|
.close = h5_close,
|
2018-08-02 14:57:19 +00:00
|
|
|
.setup = h5_setup,
|
2012-07-16 13:12:02 +00:00
|
|
|
.recv = h5_recv,
|
|
|
|
.enqueue = h5_enqueue,
|
|
|
|
.dequeue = h5_dequeue,
|
|
|
|
.flush = h5_flush,
|
|
|
|
};
|
|
|
|
|
2018-08-02 14:57:18 +00:00
|
|
|
static int h5_serdev_probe(struct serdev_device *serdev)
|
|
|
|
{
|
|
|
|
struct device *dev = &serdev->dev;
|
|
|
|
struct h5 *h5;
|
2021-07-23 11:31:55 +00:00
|
|
|
const struct h5_device_data *data;
|
2018-08-02 14:57:18 +00:00
|
|
|
|
|
|
|
h5 = devm_kzalloc(dev, sizeof(*h5), GFP_KERNEL);
|
|
|
|
if (!h5)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
h5->hu = &h5->serdev_hu;
|
|
|
|
h5->serdev_hu.serdev = serdev;
|
|
|
|
serdev_device_set_drvdata(serdev, h5);
|
|
|
|
|
2018-08-02 14:57:19 +00:00
|
|
|
if (has_acpi_companion(dev)) {
|
2020-02-18 08:28:58 +00:00
|
|
|
const struct acpi_device_id *match;
|
|
|
|
|
2018-08-02 14:57:19 +00:00
|
|
|
match = acpi_match_device(dev->driver->acpi_match_table, dev);
|
|
|
|
if (!match)
|
|
|
|
return -ENODEV;
|
|
|
|
|
2021-07-23 11:31:55 +00:00
|
|
|
data = (const struct h5_device_data *)match->driver_data;
|
|
|
|
h5->vnd = data->vnd;
|
2018-08-02 14:57:19 +00:00
|
|
|
h5->id = (char *)match->id;
|
2018-08-02 14:57:21 +00:00
|
|
|
|
|
|
|
if (h5->vnd->acpi_gpio_map)
|
|
|
|
devm_acpi_dev_add_driver_gpios(dev,
|
|
|
|
h5->vnd->acpi_gpio_map);
|
2020-02-17 08:14:55 +00:00
|
|
|
} else {
|
|
|
|
data = of_device_get_match_data(dev);
|
|
|
|
if (!data)
|
|
|
|
return -ENODEV;
|
|
|
|
|
2021-07-23 11:31:55 +00:00
|
|
|
h5->vnd = data->vnd;
|
2018-08-02 14:57:19 +00:00
|
|
|
}
|
|
|
|
|
2021-09-20 12:57:39 +00:00
|
|
|
if (data->driver_info & H5_INFO_WAKEUP_DISABLE)
|
|
|
|
set_bit(H5_WAKEUP_DISABLE, &h5->flags);
|
2020-02-17 08:14:55 +00:00
|
|
|
|
2018-08-02 14:57:21 +00:00
|
|
|
h5->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);
|
|
|
|
if (IS_ERR(h5->enable_gpio))
|
|
|
|
return PTR_ERR(h5->enable_gpio);
|
|
|
|
|
|
|
|
h5->device_wake_gpio = devm_gpiod_get_optional(dev, "device-wake",
|
|
|
|
GPIOD_OUT_LOW);
|
|
|
|
if (IS_ERR(h5->device_wake_gpio))
|
|
|
|
return PTR_ERR(h5->device_wake_gpio);
|
|
|
|
|
2021-09-24 09:41:06 +00:00
|
|
|
return hci_uart_register_device(&h5->serdev_hu, &h5p);
|
2018-08-02 14:57:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void h5_serdev_remove(struct serdev_device *serdev)
|
|
|
|
{
|
|
|
|
struct h5 *h5 = serdev_device_get_drvdata(serdev);
|
|
|
|
|
|
|
|
hci_uart_unregister_device(&h5->serdev_hu);
|
|
|
|
}
|
|
|
|
|
2018-10-30 13:17:22 +00:00
|
|
|
static int __maybe_unused h5_serdev_suspend(struct device *dev)
|
|
|
|
{
|
|
|
|
struct h5 *h5 = dev_get_drvdata(dev);
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
if (h5->vnd && h5->vnd->suspend)
|
|
|
|
ret = h5->vnd->suspend(h5);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __maybe_unused h5_serdev_resume(struct device *dev)
|
|
|
|
{
|
|
|
|
struct h5 *h5 = dev_get_drvdata(dev);
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
if (h5->vnd && h5->vnd->resume)
|
|
|
|
ret = h5->vnd->resume(h5);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2018-08-09 08:33:07 +00:00
|
|
|
#ifdef CONFIG_BT_HCIUART_RTL
|
2018-08-02 14:57:20 +00:00
|
|
|
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);
|
|
|
|
|
2021-07-23 11:31:56 +00:00
|
|
|
if (flow_control)
|
|
|
|
set_bit(H5_HW_FLOW_CONTROL, &h5->flags);
|
|
|
|
|
2018-08-02 14:57:20 +00:00
|
|
|
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);
|
|
|
|
|
2021-05-27 07:19:54 +00:00
|
|
|
btrtl_set_quirks(h5->hu->hdev, btrtl_dev);
|
2021-01-19 11:47:00 +00:00
|
|
|
|
2018-08-02 14:57:20 +00:00
|
|
|
out_free:
|
|
|
|
btrtl_free(btrtl_dev);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void h5_btrtl_open(struct h5 *h5)
|
|
|
|
{
|
2021-06-29 19:59:07 +00:00
|
|
|
/*
|
|
|
|
* Since h5_btrtl_resume() does a device_reprobe() the suspend handling
|
|
|
|
* done by the hci_suspend_notifier is not necessary; it actually causes
|
|
|
|
* delays and a bunch of errors to get logged, so disable it.
|
|
|
|
*/
|
2021-07-23 11:31:55 +00:00
|
|
|
if (test_bit(H5_WAKEUP_DISABLE, &h5->flags))
|
|
|
|
set_bit(HCI_UART_NO_SUSPEND_NOTIFIER, &h5->hu->flags);
|
2021-06-29 19:59:07 +00:00
|
|
|
|
2018-08-02 14:57:20 +00:00
|
|
|
/* 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);
|
2018-08-02 14:57:21 +00:00
|
|
|
|
2021-09-20 12:57:39 +00:00
|
|
|
if (!test_bit(H5_WAKEUP_DISABLE, &h5->flags)) {
|
|
|
|
pm_runtime_set_active(&h5->hu->serdev->dev);
|
|
|
|
pm_runtime_use_autosuspend(&h5->hu->serdev->dev);
|
|
|
|
pm_runtime_set_autosuspend_delay(&h5->hu->serdev->dev,
|
|
|
|
SUSPEND_TIMEOUT_MS);
|
|
|
|
pm_runtime_enable(&h5->hu->serdev->dev);
|
|
|
|
}
|
2021-07-23 11:31:57 +00:00
|
|
|
|
2018-08-02 14:57:21 +00:00
|
|
|
/* The controller needs up to 500ms to wakeup */
|
|
|
|
gpiod_set_value_cansleep(h5->enable_gpio, 1);
|
|
|
|
gpiod_set_value_cansleep(h5->device_wake_gpio, 1);
|
|
|
|
msleep(500);
|
2018-08-02 14:57:20 +00:00
|
|
|
}
|
|
|
|
|
2018-08-02 14:57:21 +00:00
|
|
|
static void h5_btrtl_close(struct h5 *h5)
|
|
|
|
{
|
2021-09-20 12:57:39 +00:00
|
|
|
if (!test_bit(H5_WAKEUP_DISABLE, &h5->flags))
|
|
|
|
pm_runtime_disable(&h5->hu->serdev->dev);
|
2021-07-23 11:31:57 +00:00
|
|
|
|
2018-08-02 14:57:21 +00:00
|
|
|
gpiod_set_value_cansleep(h5->device_wake_gpio, 0);
|
|
|
|
gpiod_set_value_cansleep(h5->enable_gpio, 0);
|
|
|
|
}
|
|
|
|
|
2018-10-30 13:17:23 +00:00
|
|
|
/* Suspend/resume support. On many devices the RTL BT device loses power during
|
|
|
|
* suspend/resume, causing it to lose its firmware and all state. So we simply
|
2021-07-23 11:31:55 +00:00
|
|
|
* turn it off on suspend and reprobe on resume. This mirrors how RTL devices
|
|
|
|
* are handled in the USB driver, where the BTUSB_WAKEUP_DISABLE is used which
|
2018-10-30 13:17:23 +00:00
|
|
|
* also causes a reprobe on resume.
|
|
|
|
*/
|
|
|
|
static int h5_btrtl_suspend(struct h5 *h5)
|
|
|
|
{
|
|
|
|
serdev_device_set_flow_control(h5->hu->serdev, false);
|
|
|
|
gpiod_set_value_cansleep(h5->device_wake_gpio, 0);
|
2021-07-23 11:31:55 +00:00
|
|
|
|
|
|
|
if (test_bit(H5_WAKEUP_DISABLE, &h5->flags))
|
|
|
|
gpiod_set_value_cansleep(h5->enable_gpio, 0);
|
|
|
|
|
2018-10-30 13:17:23 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct h5_btrtl_reprobe {
|
|
|
|
struct device *dev;
|
|
|
|
struct work_struct work;
|
|
|
|
};
|
|
|
|
|
|
|
|
static void h5_btrtl_reprobe_worker(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct h5_btrtl_reprobe *reprobe =
|
|
|
|
container_of(work, struct h5_btrtl_reprobe, work);
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = device_reprobe(reprobe->dev);
|
|
|
|
if (ret && ret != -EPROBE_DEFER)
|
|
|
|
dev_err(reprobe->dev, "Reprobe error %d\n", ret);
|
|
|
|
|
|
|
|
put_device(reprobe->dev);
|
|
|
|
kfree(reprobe);
|
|
|
|
module_put(THIS_MODULE);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int h5_btrtl_resume(struct h5 *h5)
|
|
|
|
{
|
2021-07-23 11:31:55 +00:00
|
|
|
if (test_bit(H5_WAKEUP_DISABLE, &h5->flags)) {
|
|
|
|
struct h5_btrtl_reprobe *reprobe;
|
2018-10-30 13:17:23 +00:00
|
|
|
|
2021-07-23 11:31:55 +00:00
|
|
|
reprobe = kzalloc(sizeof(*reprobe), GFP_KERNEL);
|
|
|
|
if (!reprobe)
|
|
|
|
return -ENOMEM;
|
2018-10-30 13:17:23 +00:00
|
|
|
|
2021-07-23 11:31:55 +00:00
|
|
|
__module_get(THIS_MODULE);
|
2018-10-30 13:17:23 +00:00
|
|
|
|
2021-07-23 11:31:55 +00:00
|
|
|
INIT_WORK(&reprobe->work, h5_btrtl_reprobe_worker);
|
|
|
|
reprobe->dev = get_device(&h5->hu->serdev->dev);
|
|
|
|
queue_work(system_long_wq, &reprobe->work);
|
|
|
|
} else {
|
|
|
|
gpiod_set_value_cansleep(h5->device_wake_gpio, 1);
|
2021-07-23 11:31:56 +00:00
|
|
|
|
|
|
|
if (test_bit(H5_HW_FLOW_CONTROL, &h5->flags))
|
|
|
|
serdev_device_set_flow_control(h5->hu->serdev, true);
|
2021-07-23 11:31:55 +00:00
|
|
|
}
|
2021-07-23 11:31:56 +00:00
|
|
|
|
2018-10-30 13:17:23 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2018-08-02 14:57:21 +00:00
|
|
|
static const struct acpi_gpio_params btrtl_device_wake_gpios = { 0, 0, false };
|
|
|
|
static const struct acpi_gpio_params btrtl_enable_gpios = { 1, 0, false };
|
|
|
|
static const struct acpi_gpio_params btrtl_host_wake_gpios = { 2, 0, false };
|
|
|
|
static const struct acpi_gpio_mapping acpi_btrtl_gpios[] = {
|
|
|
|
{ "device-wake-gpios", &btrtl_device_wake_gpios, 1 },
|
|
|
|
{ "enable-gpios", &btrtl_enable_gpios, 1 },
|
|
|
|
{ "host-wake-gpios", &btrtl_host_wake_gpios, 1 },
|
|
|
|
{},
|
|
|
|
};
|
|
|
|
|
2018-08-02 14:57:20 +00:00
|
|
|
static struct h5_vnd rtl_vnd = {
|
|
|
|
.setup = h5_btrtl_setup,
|
|
|
|
.open = h5_btrtl_open,
|
2018-08-02 14:57:21 +00:00
|
|
|
.close = h5_btrtl_close,
|
2018-10-30 13:17:23 +00:00
|
|
|
.suspend = h5_btrtl_suspend,
|
|
|
|
.resume = h5_btrtl_resume,
|
2018-08-02 14:57:21 +00:00
|
|
|
.acpi_gpio_map = acpi_btrtl_gpios,
|
2018-08-02 14:57:20 +00:00
|
|
|
};
|
2021-07-23 11:31:55 +00:00
|
|
|
|
|
|
|
static const struct h5_device_data h5_data_rtl8822cs = {
|
|
|
|
.vnd = &rtl_vnd,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct h5_device_data h5_data_rtl8723bs = {
|
|
|
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.driver_info = H5_INFO_WAKEUP_DISABLE,
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|
|
|
.vnd = &rtl_vnd,
|
|
|
|
};
|
2018-08-09 08:33:07 +00:00
|
|
|
#endif
|
2018-08-02 14:57:20 +00:00
|
|
|
|
|
|
|
#ifdef CONFIG_ACPI
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|
|
|
static const struct acpi_device_id h5_acpi_match[] = {
|
2018-08-09 08:33:07 +00:00
|
|
|
#ifdef CONFIG_BT_HCIUART_RTL
|
2021-07-23 11:31:55 +00:00
|
|
|
{ "OBDA0623", (kernel_ulong_t)&h5_data_rtl8723bs },
|
|
|
|
{ "OBDA8723", (kernel_ulong_t)&h5_data_rtl8723bs },
|
2018-08-09 08:33:07 +00:00
|
|
|
#endif
|
2018-08-02 14:57:20 +00:00
|
|
|
{ },
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(acpi, h5_acpi_match);
|
|
|
|
#endif
|
|
|
|
|
2018-10-30 13:17:22 +00:00
|
|
|
static const struct dev_pm_ops h5_serdev_pm_ops = {
|
|
|
|
SET_SYSTEM_SLEEP_PM_OPS(h5_serdev_suspend, h5_serdev_resume)
|
2021-07-23 11:31:57 +00:00
|
|
|
SET_RUNTIME_PM_OPS(h5_serdev_suspend, h5_serdev_resume, NULL)
|
2018-10-30 13:17:22 +00:00
|
|
|
};
|
|
|
|
|
2020-02-17 08:14:55 +00:00
|
|
|
static const struct of_device_id rtl_bluetooth_of_match[] = {
|
|
|
|
#ifdef CONFIG_BT_HCIUART_RTL
|
|
|
|
{ .compatible = "realtek,rtl8822cs-bt",
|
2021-07-23 11:31:55 +00:00
|
|
|
.data = (const void *)&h5_data_rtl8822cs },
|
2020-04-25 15:55:30 +00:00
|
|
|
{ .compatible = "realtek,rtl8723bs-bt",
|
2021-07-23 11:31:55 +00:00
|
|
|
.data = (const void *)&h5_data_rtl8723bs },
|
2021-01-02 21:41:15 +00:00
|
|
|
{ .compatible = "realtek,rtl8723ds-bt",
|
2021-07-23 11:31:55 +00:00
|
|
|
.data = (const void *)&h5_data_rtl8723bs },
|
2020-02-17 08:14:55 +00:00
|
|
|
#endif
|
|
|
|
{ },
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, rtl_bluetooth_of_match);
|
|
|
|
|
2018-08-02 14:57:18 +00:00
|
|
|
static struct serdev_device_driver h5_serdev_driver = {
|
|
|
|
.probe = h5_serdev_probe,
|
|
|
|
.remove = h5_serdev_remove,
|
|
|
|
.driver = {
|
|
|
|
.name = "hci_uart_h5",
|
2018-08-02 14:57:20 +00:00
|
|
|
.acpi_match_table = ACPI_PTR(h5_acpi_match),
|
2018-10-30 13:17:22 +00:00
|
|
|
.pm = &h5_serdev_pm_ops,
|
2020-02-17 08:14:55 +00:00
|
|
|
.of_match_table = rtl_bluetooth_of_match,
|
2018-08-02 14:57:18 +00:00
|
|
|
},
|
|
|
|
};
|
|
|
|
|
2012-07-16 13:12:02 +00:00
|
|
|
int __init h5_init(void)
|
|
|
|
{
|
2018-08-02 14:57:18 +00:00
|
|
|
serdev_device_driver_register(&h5_serdev_driver);
|
2015-04-05 05:27:35 +00:00
|
|
|
return hci_uart_register_proto(&h5p);
|
2012-07-16 13:12:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int __exit h5_deinit(void)
|
|
|
|
{
|
2018-08-02 14:57:18 +00:00
|
|
|
serdev_device_driver_unregister(&h5_serdev_driver);
|
2012-07-16 13:12:02 +00:00
|
|
|
return hci_uart_unregister_proto(&h5p);
|
|
|
|
}
|