Commit eb762b94 authored by Abhishek Pandit-Subedi's avatar Abhishek Pandit-Subedi Committed by Johan Hedberg
Browse files

Bluetooth: hci_bcm: Support pcm params in dts 



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: default avatarAbhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent 6fc0e190

drivers/bluetooth/hci_bcm.c

+19 −0
Original line number Diff line number Diff line
@@ -122,6 +122,7 @@ struct bcm_device { 
	bool			is_suspended;

#endif

	bool			no_early_set_baudrate;

	u8			pcm_int_params[5];

};



/* generic bcm uart resources */
@@ -594,6 +595,16 @@ 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);
@@ -1131,6 +1142,8 @@ static int bcm_acpi_probe(struct bcm_device *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;

}
@@ -1146,6 +1159,9 @@ static int bcm_probe(struct platform_device *pdev) 
	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)
@@ -1406,6 +1422,9 @@ static int bcm_serdev_probe(struct serdev_device *serdev) 
	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

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