From patchwork Wed Jun 13 16:53:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joseph Salisbury X-Patchwork-Id: 928981 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=canonical.com Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 415XsL126Hz9s01; Thu, 14 Jun 2018 02:54:14 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1fT927-00006W-72; Wed, 13 Jun 2018 16:54:07 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.86_2) (envelope-from ) id 1fT920-0008WE-DL for kernel-team@lists.ubuntu.com; Wed, 13 Jun 2018 16:54:00 +0000 Received: from 1.general.jsalisbury.us.vpn ([10.172.67.212] helo=salisbury) by youngberry.canonical.com with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1fT91z-0007ce-VP for kernel-team@lists.ubuntu.com; Wed, 13 Jun 2018 16:54:00 +0000 Received: by salisbury (Postfix, from userid 1000) id C924C7E04A5; Wed, 13 Jun 2018 12:53:58 -0400 (EDT) From: Joseph Salisbury To: kernel-team@lists.ubuntu.com Subject: [SRU][Bionic][PATCH 1/1] Bluetooth: btusb: Apply QCA Rome patches for some ATH3012 models Date: Wed, 13 Jun 2018 12:53:58 -0400 Message-Id: X-Mailer: git-send-email 2.17.0 In-Reply-To: References: In-Reply-To: References: X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" From: Takashi Iwai BugLink: http://bugs.launchpad.net/bugs/1764645 In commit f44cb4b19ed4 ("Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174") we tried to address the non-working Atheros BT devices by changing the quirk from BTUSB_ATH3012 to BTUSB_QCA_ROME. This made such devices working while it turned out to break other existing chips with the very same USB ID, hence it was reverted afterwards. This is another attempt to tackle the issue. The essential point to use BTUSB_QCA_ROME is to apply the btusb_setup_qca() and do RAM- patching. And the previous attempt failed because btusb_setup_qca() returns -ENODEV if the ROM version doesn't match with the expected ones. For some devices that have already the "correct" ROM versions, we may just skip the setup procedure and continue the rest. So, the first fix we'll need is to add a check of the ROM version in the function to skip the setup if the ROM version looks already sane, so that it can be applied for all ath devices. However, the world is a bit more complex than that simple solution. Since BTUSB_ATH3012 quirk checks the bcdDevice and bails out when it's 0x0001 at the beginning of probing, so the device probe always aborts here. In this patch, we add another check of ROM version again, and if the device needs patching, the probe continues. For that, a slight refactoring of btusb_qca_send_vendor_req() was required so that the probe function can pass usb_device pointer directly before allocating hci_dev stuff. Fixes: commit f44cb4b19ed4 ("Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174") Bugzilla: http://bugzilla.opensuse.org/show_bug.cgi?id=1082504 Tested-by: Ivan Levshin Signed-off-by: Takashi Iwai Signed-off-by: Marcel Holtmann (cherry picked from commit 803cdb8ce584198cd45825822910cac7de6378cb) Signed-off-by: Joseph Salisbury Acked-by: Stefan Bader --- drivers/bluetooth/btusb.c | 32 +++++++++++++++++++++++++------- 1 file changed, 25 insertions(+), 7 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index e6e66dd..41dd5b1 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2565,11 +2565,9 @@ static const struct qca_device_info qca_devices_table[] = { { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */ }; -static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request, +static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, void *data, u16 size) { - struct btusb_data *btdata = hci_get_drvdata(hdev); - struct usb_device *udev = btdata->udev; int pipe, err; u8 *buf; @@ -2584,7 +2582,7 @@ static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request, err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); if (err < 0) { - bt_dev_err(hdev, "Failed to access otp area (%d)", err); + dev_err(&udev->dev, "Failed to access otp area (%d)", err); goto done; } @@ -2734,20 +2732,38 @@ static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, return err; } +/* identify the ROM version and check whether patches are needed */ +static bool btusb_qca_need_patch(struct usb_device *udev) +{ + struct qca_version ver; + + if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, + sizeof(ver)) < 0) + return false; + /* only low ROM versions need patches */ + return !(le32_to_cpu(ver.rom_version) & ~0xffffU); +} + static int btusb_setup_qca(struct hci_dev *hdev) { + struct btusb_data *btdata = hci_get_drvdata(hdev); + struct usb_device *udev = btdata->udev; const struct qca_device_info *info = NULL; struct qca_version ver; u32 ver_rom; u8 status; int i, err; - err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver, + err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, sizeof(ver)); if (err < 0) return err; ver_rom = le32_to_cpu(ver.rom_version); + /* Don't care about high ROM versions */ + if (ver_rom & ~0xffffU) + return 0; + for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { if (ver_rom == qca_devices_table[i].rom_version) info = &qca_devices_table[i]; @@ -2757,7 +2773,7 @@ static int btusb_setup_qca(struct hci_dev *hdev) return -ENODEV; } - err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status, + err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, sizeof(status)); if (err < 0) return err; @@ -2965,7 +2981,8 @@ static int btusb_probe(struct usb_interface *intf, /* Old firmware would otherwise let ath3k driver load * patch and sysconfig files */ - if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) + if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && + !btusb_qca_need_patch(udev)) return -ENODEV; } @@ -3130,6 +3147,7 @@ static int btusb_probe(struct usb_interface *intf, } if (id->driver_info & BTUSB_ATH3012) { + data->setup_on_usb = btusb_setup_qca; hdev->set_bdaddr = btusb_set_bdaddr_ath3012; set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);