diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0882-Bluetooth-hci_bcm-Drive-RTS-only-for-BCM43438.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0882-Bluetooth-hci_bcm-Drive-RTS-only-for-BCM43438.patch | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0882-Bluetooth-hci_bcm-Drive-RTS-only-for-BCM43438.patch b/target/linux/bcm27xx/patches-5.4/950-0882-Bluetooth-hci_bcm-Drive-RTS-only-for-BCM43438.patch new file mode 100644 index 0000000000..507f21ab66 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0882-Bluetooth-hci_bcm-Drive-RTS-only-for-BCM43438.patch @@ -0,0 +1,92 @@ +From b2e19dbff471eb6b9b39ff8f21c8d38e4fac8fe6 Mon Sep 17 00:00:00 2001 +From: Stefan Wahren <wahrenst@gmx.net> +Date: Wed, 1 Jan 2020 15:01:34 +0100 +Subject: [PATCH] Bluetooth: hci_bcm: Drive RTS only for BCM43438 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +commit e601daed271e9eb1b923972a0a1af65f8c7bb77b upstream. + +The commit 3347a80965b3 ("Bluetooth: hci_bcm: Fix RTS handling during +startup") is causing at least a regression for AP6256 on Orange Pi 3. +So do the RTS line handing during startup only on the necessary platform. + +Fixes: 3347a80965b3 ("Bluetooth: hci_bcm: Fix RTS handling during startup") +Reported-by: Ondřej Jirman <megous@megous.com> +Signed-off-by: Stefan Wahren <wahrenst@gmx.net> +Signed-off-by: Marcel Holtmann <marcel@holtmann.org> +--- + drivers/bluetooth/hci_bcm.c | 21 +++++++++++++++++---- + 1 file changed, 17 insertions(+), 4 deletions(-) + +--- a/drivers/bluetooth/hci_bcm.c ++++ b/drivers/bluetooth/hci_bcm.c +@@ -53,6 +53,7 @@ + */ + struct bcm_device_data { + bool no_early_set_baudrate; ++ bool drive_rts_on_open; + }; + + /** +@@ -123,6 +124,7 @@ struct bcm_device { + bool is_suspended; + #endif + bool no_early_set_baudrate; ++ bool drive_rts_on_open; + u8 pcm_int_params[5]; + }; + +@@ -459,7 +461,9 @@ static int bcm_open(struct hci_uart *hu) + + out: + if (bcm->dev) { +- hci_uart_set_flow_control(hu, true); ++ if (bcm->dev->drive_rts_on_open) ++ hci_uart_set_flow_control(hu, true); ++ + hu->init_speed = bcm->dev->init_speed; + + /* If oper_speed is set, ldisc/serdev will set the baudrate +@@ -469,7 +473,10 @@ out: + hu->oper_speed = bcm->dev->oper_speed; + + err = bcm_gpio_set_power(bcm->dev, true); +- hci_uart_set_flow_control(hu, false); ++ ++ if (bcm->dev->drive_rts_on_open) ++ hci_uart_set_flow_control(hu, false); ++ + if (err) + goto err_unset_hu; + } +@@ -1450,8 +1457,10 @@ static int bcm_serdev_probe(struct serde + dev_err(&serdev->dev, "Failed to power down\n"); + + data = device_get_match_data(bcmdev->dev); +- if (data) ++ if (data) { + bcmdev->no_early_set_baudrate = data->no_early_set_baudrate; ++ bcmdev->drive_rts_on_open = data->drive_rts_on_open; ++ } + + return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto); + } +@@ -1468,11 +1477,15 @@ static struct bcm_device_data bcm4354_de + .no_early_set_baudrate = true, + }; + ++static struct bcm_device_data bcm43438_device_data = { ++ .drive_rts_on_open = true, ++}; ++ + static const struct of_device_id bcm_bluetooth_of_match[] = { + { .compatible = "brcm,bcm20702a1" }, + { .compatible = "brcm,bcm4345c5" }, + { .compatible = "brcm,bcm4330-bt" }, +- { .compatible = "brcm,bcm43438-bt" }, ++ { .compatible = "brcm,bcm43438-bt", .data = &bcm43438_device_data }, + { .compatible = "brcm,bcm43540-bt", .data = &bcm4354_device_data }, + { .compatible = "brcm,bcm4335a0" }, + { }, |