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Bluetooth: hci_bcm: Support pcm params in dts

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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>
This commit is contained in:
Abhishek Pandit-Subedi 2019-11-26 08:17:32 +01:00 committed by Johan Hedberg
parent 6fc0e19036
commit eb762b9411
1 changed files with 19 additions and 0 deletions
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19
drivers/bluetooth/hci_bcm.c
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@ -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