From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/bluetooth/hci_h5.c | 158 +++++++++++++++++++++++++++++++++++++++++-----------
1 files changed, 124 insertions(+), 34 deletions(-)
diff --git a/kernel/drivers/bluetooth/hci_h5.c b/kernel/drivers/bluetooth/hci_h5.c
index 79b9625..7f70a67 100644
--- a/kernel/drivers/bluetooth/hci_h5.c
+++ b/kernel/drivers/bluetooth/hci_h5.c
@@ -1,24 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* Bluetooth HCI Three-wire UART driver
*
* Copyright (C) 2012 Intel Corporation
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
*/
#include <linux/acpi.h>
@@ -26,6 +11,7 @@
#include <linux/gpio/consumer.h>
#include <linux/kernel.h>
#include <linux/mod_devicetable.h>
+#include <linux/of_device.h>
#include <linux/serdev.h>
#include <linux/skbuff.h>
@@ -115,6 +101,8 @@
int (*setup)(struct h5 *h5);
void (*open)(struct h5 *h5);
void (*close)(struct h5 *h5);
+ int (*suspend)(struct h5 *h5);
+ int (*resume)(struct h5 *h5);
const struct acpi_gpio_mapping *acpi_gpio_map;
};
@@ -190,7 +178,7 @@
{
struct h5 *h5 = hu->priv;
- BT_ERR("Peer device has reset");
+ bt_dev_err(hu->hdev, "Peer device has reset");
h5->state = H5_UNINITIALIZED;
@@ -311,7 +299,7 @@
break;
__skb_unlink(skb, &h5->unack);
- kfree_skb(skb);
+ dev_kfree_skb_irq(skb);
}
if (skb_queue_empty(&h5->unack))
@@ -401,6 +389,7 @@
case HCI_EVENT_PKT:
case HCI_ACLDATA_PKT:
case HCI_SCODATA_PKT:
+ case HCI_ISODATA_PKT:
hci_skb_pkt_type(h5->rx_skb) = H5_HDR_PKT_TYPE(hdr);
/* Remove Three-wire header */
@@ -452,21 +441,21 @@
H5_HDR_LEN(hdr));
if (((hdr[0] + hdr[1] + hdr[2] + hdr[3]) & 0xff) != 0xff) {
- BT_ERR("Invalid header checksum");
+ bt_dev_err(hu->hdev, "Invalid header checksum");
h5_reset_rx(h5);
return 0;
}
if (H5_HDR_RELIABLE(hdr) && H5_HDR_SEQ(hdr) != h5->tx_ack) {
- BT_ERR("Out-of-order packet arrived (%u != %u)",
- H5_HDR_SEQ(hdr), h5->tx_ack);
+ bt_dev_err(hu->hdev, "Out-of-order packet arrived (%u != %u)",
+ H5_HDR_SEQ(hdr), h5->tx_ack);
h5_reset_rx(h5);
return 0;
}
if (h5->state != H5_ACTIVE &&
H5_HDR_PKT_TYPE(hdr) != HCI_3WIRE_LINK_PKT) {
- BT_ERR("Non-link packet received in non-active state");
+ bt_dev_err(hu->hdev, "Non-link packet received in non-active state");
h5_reset_rx(h5);
return 0;
}
@@ -489,7 +478,7 @@
h5->rx_skb = bt_skb_alloc(H5_MAX_LEN, GFP_ATOMIC);
if (!h5->rx_skb) {
- BT_ERR("Can't allocate mem for new packet");
+ bt_dev_err(hu->hdev, "Can't allocate mem for new packet");
h5_reset_rx(h5);
return -ENOMEM;
}
@@ -537,7 +526,7 @@
skb_put_data(h5->rx_skb, byte, 1);
h5->rx_pending--;
- BT_DBG("unsliped 0x%02hhx, rx_pending %zu", *byte, h5->rx_pending);
+ BT_DBG("unslipped 0x%02hhx, rx_pending %zu", *byte, h5->rx_pending);
}
static void h5_reset_rx(struct h5 *h5)
@@ -565,7 +554,7 @@
if (h5->rx_pending > 0) {
if (*ptr == SLIP_DELIMITER) {
- BT_ERR("Too short H5 packet");
+ bt_dev_err(hu->hdev, "Too short H5 packet");
h5_reset_rx(h5);
continue;
}
@@ -592,13 +581,13 @@
struct h5 *h5 = hu->priv;
if (skb->len > 0xfff) {
- BT_ERR("Packet too long (%u bytes)", skb->len);
+ bt_dev_err(hu->hdev, "Packet too long (%u bytes)", skb->len);
kfree_skb(skb);
return 0;
}
if (h5->state != H5_ACTIVE) {
- BT_ERR("Ignoring HCI data in non-active state");
+ bt_dev_err(hu->hdev, "Ignoring HCI data in non-active state");
kfree_skb(skb);
return 0;
}
@@ -610,11 +599,12 @@
break;
case HCI_SCODATA_PKT:
+ case HCI_ISODATA_PKT:
skb_queue_tail(&h5->unrel, skb);
break;
default:
- BT_ERR("Unknown packet type %u", hci_skb_pkt_type(skb));
+ bt_dev_err(hu->hdev, "Unknown packet type %u", hci_skb_pkt_type(skb));
kfree_skb(skb);
break;
}
@@ -652,6 +642,7 @@
case HCI_ACLDATA_PKT:
case HCI_COMMAND_PKT:
case HCI_SCODATA_PKT:
+ case HCI_ISODATA_PKT:
case HCI_3WIRE_LINK_PKT:
case HCI_3WIRE_ACK_PKT:
return true;
@@ -669,7 +660,7 @@
int i;
if (!valid_packet_type(pkt_type)) {
- BT_ERR("Unknown packet type %u", pkt_type);
+ bt_dev_err(hu->hdev, "Unknown packet type %u", pkt_type);
return NULL;
}
@@ -746,7 +737,7 @@
}
skb_queue_head(&h5->unrel, skb);
- BT_ERR("Could not dequeue pkt because alloc_skb failed");
+ bt_dev_err(hu->hdev, "Could not dequeue pkt because alloc_skb failed");
}
spin_lock_irqsave_nested(&h5->unack.lock, flags, SINGLE_DEPTH_NESTING);
@@ -766,7 +757,7 @@
}
skb_queue_head(&h5->rel, skb);
- BT_ERR("Could not dequeue pkt because alloc_skb failed");
+ bt_dev_err(hu->hdev, "Could not dequeue pkt because alloc_skb failed");
}
unlock:
@@ -798,7 +789,6 @@
static int h5_serdev_probe(struct serdev_device *serdev)
{
- const struct acpi_device_id *match;
struct device *dev = &serdev->dev;
struct h5 *h5;
@@ -806,13 +796,13 @@
if (!h5)
return -ENOMEM;
- set_bit(HCI_UART_RESET_ON_INIT, &h5->serdev_hu.hdev_flags);
-
h5->hu = &h5->serdev_hu;
h5->serdev_hu.serdev = serdev;
serdev_device_set_drvdata(serdev, h5);
if (has_acpi_companion(dev)) {
+ const struct acpi_device_id *match;
+
match = acpi_match_device(dev->driver->acpi_match_table, dev);
if (!match)
return -ENODEV;
@@ -823,7 +813,16 @@
if (h5->vnd->acpi_gpio_map)
devm_acpi_dev_add_driver_gpios(dev,
h5->vnd->acpi_gpio_map);
+ } else {
+ const void *data;
+
+ data = of_device_get_match_data(dev);
+ if (!data)
+ return -ENODEV;
+
+ h5->vnd = (const struct h5_vnd *)data;
}
+
h5->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);
if (IS_ERR(h5->enable_gpio))
@@ -842,6 +841,28 @@
struct h5 *h5 = serdev_device_get_drvdata(serdev);
hci_uart_unregister_device(&h5->serdev_hu);
+}
+
+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;
}
#ifdef CONFIG_BT_HCIUART_RTL
@@ -915,6 +936,56 @@
gpiod_set_value_cansleep(h5->enable_gpio, 0);
}
+/* 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
+ * turn it off on suspend and reprobe on resume. This mirrors how RTL devices
+ * are handled in the USB driver, where the USB_QUIRK_RESET_RESUME is used which
+ * 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);
+ gpiod_set_value_cansleep(h5->enable_gpio, 0);
+ 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)
+{
+ struct h5_btrtl_reprobe *reprobe;
+
+ reprobe = kzalloc(sizeof(*reprobe), GFP_KERNEL);
+ if (!reprobe)
+ return -ENOMEM;
+
+ __module_get(THIS_MODULE);
+
+ INIT_WORK(&reprobe->work, h5_btrtl_reprobe_worker);
+ reprobe->dev = get_device(&h5->hu->serdev->dev);
+ queue_work(system_long_wq, &reprobe->work);
+ return 0;
+}
+
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 };
@@ -929,6 +1000,8 @@
.setup = h5_btrtl_setup,
.open = h5_btrtl_open,
.close = h5_btrtl_close,
+ .suspend = h5_btrtl_suspend,
+ .resume = h5_btrtl_resume,
.acpi_gpio_map = acpi_btrtl_gpios,
};
#endif
@@ -943,12 +1016,29 @@
MODULE_DEVICE_TABLE(acpi, h5_acpi_match);
#endif
+static const struct dev_pm_ops h5_serdev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(h5_serdev_suspend, h5_serdev_resume)
+};
+
+static const struct of_device_id rtl_bluetooth_of_match[] = {
+#ifdef CONFIG_BT_HCIUART_RTL
+ { .compatible = "realtek,rtl8822cs-bt",
+ .data = (const void *)&rtl_vnd },
+ { .compatible = "realtek,rtl8723bs-bt",
+ .data = (const void *)&rtl_vnd },
+#endif
+ { },
+};
+MODULE_DEVICE_TABLE(of, rtl_bluetooth_of_match);
+
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),
+ .pm = &h5_serdev_pm_ops,
+ .of_match_table = rtl_bluetooth_of_match,
},
};
--
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