diff options
| author | Abhishek Pandit-Subedi <abhishekpandit@chromium.org> | 2019-11-26 08:17:32 +0100 |
|---|---|---|
| committer | Johan Hedberg <johan.hedberg@intel.com> | 2019-11-27 09:10:06 +0200 |
| commit | eb762b94111b646b4f116ebfdbfcadbad14e12b3 (patch) | |
| tree | 65a9422bd1423389ea2fb461d64813c61206c170 /drivers/bluetooth/hci_bcm.c | |
| parent | 6fc0e19036d6198b9287bb74c0c9df7c17ec8c2e (diff) | |
| download | lwn-eb762b94111b646b4f116ebfdbfcadbad14e12b3.tar.gz lwn-eb762b94111b646b4f116ebfdbfcadbad14e12b3.zip | |
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: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'drivers/bluetooth/hci_bcm.c')
| -rw-r--r-- | drivers/bluetooth/hci_bcm.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c index 0200eff12bc9..f8f5c593a05c 100644 --- a/drivers/bluetooth/hci_bcm.c +++ b/drivers/bluetooth/hci_bcm.c @@ -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, ¶ms); + + memcpy(¶ms, bcm->dev->pcm_int_params, 5); + btbcm_write_pcm_int_params(hu->hdev, ¶ms); + } + 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 |