From mboxrd@z Thu Jan 1 00:00:00 1970 From: Loic Poulain Subject: [PATCH v4 3/3] Bluetooth: btqcomsmd: retieve BD address from DT Date: Tue, 5 Sep 2017 12:26:04 +0200 Message-ID: <1504607164-12645-3-git-send-email-loic.poulain@linaro.org> References: <1504607164-12645-1-git-send-email-loic.poulain@linaro.org> Return-path: In-Reply-To: <1504607164-12645-1-git-send-email-loic.poulain-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> Sender: linux-bluetooth-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: marcel-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org, johan.hedberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: linux-bluetooth-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, bjorn.andersson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, Loic Poulain List-Id: devicetree@vger.kernel.org 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 drivers/bluetooth/btqcomsmd.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/bluetooth/btqcomsmd.c b/drivers/bluetooth/btqcomsmd.c index c70fae75c4ad..08a83cb30af6 100644 --- a/drivers/bluetooth/btqcomsmd.c +++ b/drivers/bluetooth/btqcomsmd.c @@ -15,6 +15,8 @@ #include #include #include +#include + #include #include @@ -126,6 +128,7 @@ static int btqcomsmd_setup(struct hci_dev *hdev) static int btqcomsmd_probe(struct platform_device *pdev) { + const bdaddr_t *local_bd_addr; struct btqcomsmd *btq; struct hci_dev *hdev; void *wcnss; @@ -147,6 +150,18 @@ 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. + */ + local_bd_addr = of_get_property(pdev->dev.of_node, "local-mac-address", + &ret); + if (local_bd_addr && ret == sizeof(bdaddr_t)) { + /* local-bd-address stored with most significant byte first */ + baswap(&btq->bdaddr, local_bd_addr); + BT_INFO("BD address %pMR retrieved from device-tree", + &btq->bdaddr); + } + hdev = hci_alloc_dev(); if (!hdev) return -ENOMEM; -- 2.13.0