bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 74 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0881-Bluetooth-hci_bcm-Support-pcm-params-in-dts.patch b/target/linux/bcm27xx/patches-5.4/950-0881-Bluetooth-hci_bcm-Support-pcm-params-in-dts.patch
new file mode 100644
index 0000000000..fa2de56bfe
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0881-Bluetooth-hci_bcm-Support-pcm-params-in-dts.patch
@@ -0,0 +1,74 @@
+From 8b4d7321625cc8403a9ce7f050bd8d1b4ef7446d Mon Sep 17 00:00:00 2001
+From: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
+Date: Tue, 26 Nov 2019 08:17:32 +0100
+Subject: [PATCH] Bluetooth: hci_bcm: Support pcm params in dts
+
+commit eb762b94111b646b4f116ebfdbfcadbad14e12b3 upstream.
+
+BCM chips may require configuration of PCM to operate correctly and
+there is a vendor specific HCI command to do this. Add support in the
+hci_bcm driver to parse this from devicetree and configure the chip.
+
+Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
+Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
+Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
+---
+ drivers/bluetooth/hci_bcm.c | 19 +++++++++++++++++++
+ 1 file changed, 19 insertions(+)
+
+--- a/drivers/bluetooth/hci_bcm.c
++++ b/drivers/bluetooth/hci_bcm.c
+@@ -123,6 +123,7 @@ struct bcm_device {
+ 	bool			is_suspended;
+ #endif
+ 	bool			no_early_set_baudrate;
++	u8			pcm_int_params[5];
+ };
+ 
+ /* generic bcm uart resources */
+@@ -597,6 +598,16 @@ static int bcm_setup(struct hci_uart *hu
+ 			host_set_baudrate(hu, speed);
+ 	}
+ 
++	/* PCM parameters if provided */
++	if (bcm->dev && bcm->dev->pcm_int_params[0] != 0xff) {
++		struct bcm_set_pcm_int_params params;
++
++		btbcm_read_pcm_int_params(hu->hdev, &params);
++
++		memcpy(&params, bcm->dev->pcm_int_params, 5);
++		btbcm_write_pcm_int_params(hu->hdev, &params);
++	}
++
+ finalize:
+ 	release_firmware(fw);
+ 
+@@ -1134,6 +1145,8 @@ static int bcm_acpi_probe(struct bcm_dev
+ static int bcm_of_probe(struct bcm_device *bdev)
+ {
+ 	device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed);
++	device_property_read_u8_array(bdev->dev, "brcm,bt-pcm-int-params",
++				      bdev->pcm_int_params, 5);
+ 	return 0;
+ }
+ 
+@@ -1149,6 +1162,9 @@ static int bcm_probe(struct platform_dev
+ 	dev->dev = &pdev->dev;
+ 	dev->irq = platform_get_irq(pdev, 0);
+ 
++	/* Initialize routing field to an unused value */
++	dev->pcm_int_params[0] = 0xff;
++
+ 	if (has_acpi_companion(&pdev->dev)) {
+ 		ret = bcm_acpi_probe(dev);
+ 		if (ret)
+@@ -1409,6 +1425,9 @@ static int bcm_serdev_probe(struct serde
+ 	bcmdev->serdev_hu.serdev = serdev;
+ 	serdev_device_set_drvdata(serdev, bcmdev);
+ 
++	/* Initialize routing field to an unused value */
++	bcmdev->pcm_int_params[0] = 0xff;
++
+ 	if (has_acpi_companion(&serdev->dev))
+ 		err = bcm_acpi_probe(bcmdev);
+ 	else