Return-Path: From: Loic Poulain To: marcel@holtmann.org, johan.hedberg@gmail.com, robh+dt@kernel.org Cc: linux-bluetooth@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, bjorn.andersson@linaro.org, Loic Poulain Subject: [PATCH v5 3/3] Bluetooth: btqcomsmd: retieve BD address from DT Date: Tue, 5 Sep 2017 20:58:43 +0200 Message-Id: <1504637923-21652-3-git-send-email-loic.poulain@linaro.org> In-Reply-To: <1504637923-21652-1-git-send-email-loic.poulain@linaro.org> References: <1504637923-21652-1-git-send-email-loic.poulain@linaro.org> List-ID: Retrieve BD address from the DT local-bd-address property. This address must be unique and is usually added in the DT by the bootloader which has access to the provisioned data. Signed-off-by: Loic Poulain --- v2: Set device as unconfigured if default address detected Add warning if BD addr retrieved from DT v3: if no addr retrieved from DT, unconditionally set the invalid BD addr flag. swap and set bdaddr in the platform probe v4: Add dt-bindings documentation split patch in two parts (setup, dt prop) use local-bd-address name instead of local-mac-address v5: remove 2/3 merged in bluetooth-next tree Add bluetooth.txt for common BT bindings expect local-bd-address in little-endian format drivers/bluetooth/btqcomsmd.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/bluetooth/btqcomsmd.c b/drivers/bluetooth/btqcomsmd.c index bd810d0..c6d3fd9 100644 --- a/drivers/bluetooth/btqcomsmd.c +++ b/drivers/bluetooth/btqcomsmd.c @@ -15,6 +15,8 @@ #include #include #include +#include + #include #include @@ -135,6 +137,7 @@ static int btqcomsmd_setup(struct hci_dev *hdev) static int btqcomsmd_probe(struct platform_device *pdev) { + const bdaddr_t *bdaddr; struct btqcomsmd *btq; struct hci_dev *hdev; void *wcnss; @@ -156,6 +159,15 @@ static int btqcomsmd_probe(struct platform_device *pdev) if (IS_ERR(btq->cmd_channel)) return PTR_ERR(btq->cmd_channel); + /* The local-bd-address DT property is usually injected by the + * bootloader which has access to the allocated BD address. + */ + bdaddr = of_get_property(pdev->dev.of_node, "local-bd-address", &ret); + if (bdaddr && ret == sizeof(bdaddr_t)) { + BT_INFO("BD address %pMR retrieved from device-tree", bdaddr); + bacpy(&btq->bdaddr, bdaddr); + } + hdev = hci_alloc_dev(); if (!hdev) return -ENOMEM; -- 1.9.1