2020-03-25 12:26:55 +00:00
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2020-03-25 12:26:55 +00:00
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2020-03-08 13:31:15 +00:00
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Tue, 24 Mar 2020 18:28:22 +0000 (UTC)
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2020-03-08 13:31:15 +00:00
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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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2020-03-12 13:01:59 +00:00
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To: linux-kernel@vger.kernel.org, Florian Fainelli <f.fainelli@gmail.com>,
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Ray Jui <rjui@broadcom.com>, Scott Branden <sbranden@broadcom.com>,
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bcm-kernel-feedback-list@broadcom.com,
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Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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2020-03-25 12:26:55 +00:00
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Subject: [PATCH v6 1/4] soc: bcm2835: Sync xHCI reset firmware property with
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2020-03-08 13:31:15 +00:00
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downstream
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2020-03-25 12:26:55 +00:00
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Date: Tue, 24 Mar 2020 19:28:09 +0100
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References: <20200324182812.20420-1-nsaenzjulienne@suse.de>
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2020-03-08 13:31:15 +00:00
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2020-03-12 13:01:59 +00:00
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Cc: tim.gover@raspberrypi.org, sergei.shtylyov@cogentembedded.com,
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gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
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linux-rpi-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
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linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
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The property is needed in order to trigger VL805's firmware load. Note
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that there is a gap between the property introduced and the previous
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one. This is also the case downstream.
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Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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---
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include/soc/bcm2835/raspberrypi-firmware.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
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index 7800e12ee042..cc9cdbc66403 100644
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--- a/include/soc/bcm2835/raspberrypi-firmware.h
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+++ b/include/soc/bcm2835/raspberrypi-firmware.h
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@@ -90,7 +90,7 @@ enum rpi_firmware_property_tag {
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RPI_FIRMWARE_SET_PERIPH_REG = 0x00038045,
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RPI_FIRMWARE_GET_POE_HAT_VAL = 0x00030049,
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RPI_FIRMWARE_SET_POE_HAT_VAL = 0x00030050,
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-
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+ RPI_FIRMWARE_NOTIFY_XHCI_RESET = 0x00030058,
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/* Dispmanx TAGS */
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RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE = 0x00040001,
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2020-03-25 12:26:55 +00:00
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From patchwork Tue Mar 24 18:28:10 2020
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X-Patchwork-Submitter: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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2020-03-25 12:26:55 +00:00
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X-Patchwork-Id: 11456191
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2020-03-08 13:31:15 +00:00
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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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2020-03-25 12:26:55 +00:00
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To: linux-kernel@vger.kernel.org,
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Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
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Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
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Scott Branden <sbranden@broadcom.com>,
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bcm-kernel-feedback-list@broadcom.com
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Subject: [PATCH v6 2/4] firmware: raspberrypi: Introduce vl805 init routine
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Date: Tue, 24 Mar 2020 19:28:10 +0100
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---- ----------------------
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2020-03-12 13:01:59 +00:00
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Cc: tim.gover@raspberrypi.org, sergei.shtylyov@cogentembedded.com,
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gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
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linux-rpi-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
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linux-arm-kernel@lists.infradead.org, wahrenst@gmx.net
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2020-03-08 13:31:15 +00:00
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Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
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Errors-To:
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linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
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On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be
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loaded directly from an EEPROM or, if not present, by the SoC's
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VideCore. The function informs VideCore that VL805 was just reset, or
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requests for a probe defer.
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Based on Tim Gover's downstream implementation.
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Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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---
|
2020-03-12 13:01:59 +00:00
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Changes since v4:
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- Inline function definition when RASPBERRYPI_FIRMWARE is not defined
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2020-03-08 13:31:15 +00:00
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Changes since v1:
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- Move include into .c file and add forward declaration to .h
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drivers/firmware/raspberrypi.c | 38 ++++++++++++++++++++++
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include/soc/bcm2835/raspberrypi-firmware.h | 7 ++++
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2 files changed, 45 insertions(+)
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diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
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index da26a584dca0..cbb495aff6a0 100644
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--- a/drivers/firmware/raspberrypi.c
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+++ b/drivers/firmware/raspberrypi.c
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@@ -12,6 +12,7 @@
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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+#include <linux/pci.h>
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#include <soc/bcm2835/raspberrypi-firmware.h>
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#define MBOX_MSG(chan, data28) (((data28) & ~0xf) | ((chan) & 0xf))
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@@ -286,6 +287,43 @@ struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
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}
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EXPORT_SYMBOL_GPL(rpi_firmware_get);
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+/*
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+ * On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be
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+ * loaded directly from an EEPROM or, if not present, by the SoC's VideCore.
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+ * Inform VideCore that VL805 was just reset, or defer xhci's probe if not yet
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+ * joinable trough the mailbox interface.
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+ */
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+int rpi_firmware_init_vl805(struct pci_dev *pdev)
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+{
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+ struct device_node *fw_np;
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+ struct rpi_firmware *fw;
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+ u32 dev_addr;
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+ int ret;
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+
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+ fw_np = of_find_compatible_node(NULL, NULL,
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+ "raspberrypi,bcm2835-firmware");
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+ if (!fw_np)
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+ return 0;
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+
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+ fw = rpi_firmware_get(fw_np);
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+ of_node_put(fw_np);
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+ if (!fw)
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+ return -EPROBE_DEFER;
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+
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+ dev_addr = pdev->bus->number << 20 | PCI_SLOT(pdev->devfn) << 15 |
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+ PCI_FUNC(pdev->devfn) << 12;
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+
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+ ret = rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_XHCI_RESET,
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+ &dev_addr, sizeof(dev_addr));
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+ if (ret)
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+ return ret;
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+
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+ dev_dbg(&pdev->dev, "loaded Raspberry Pi's VL805 firmware\n");
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+
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+ return 0;
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+}
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+EXPORT_SYMBOL_GPL(rpi_firmware_init_vl805);
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+
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static const struct of_device_id rpi_firmware_of_match[] = {
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{ .compatible = "raspberrypi,bcm2835-firmware", },
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{},
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diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
|
2020-03-12 13:01:59 +00:00
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index cc9cdbc66403..3025aca3c358 100644
|
2020-03-08 13:31:15 +00:00
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--- a/include/soc/bcm2835/raspberrypi-firmware.h
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+++ b/include/soc/bcm2835/raspberrypi-firmware.h
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@@ -10,6 +10,7 @@
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|
#include <linux/of_device.h>
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struct rpi_firmware;
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+struct pci_dev;
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enum rpi_firmware_property_status {
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RPI_FIRMWARE_STATUS_REQUEST = 0,
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@@ -141,6 +142,7 @@ int rpi_firmware_property(struct rpi_firmware *fw,
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int rpi_firmware_property_list(struct rpi_firmware *fw,
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void *data, size_t tag_size);
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struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
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|
+int rpi_firmware_init_vl805(struct pci_dev *pdev);
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#else
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|
static inline int rpi_firmware_property(struct rpi_firmware *fw, u32 tag,
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void *data, size_t len)
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@@ -158,6 +160,11 @@ static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware
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|
{
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|
return NULL;
|
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|
}
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+
|
2020-03-12 13:01:59 +00:00
|
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|
+static inline int rpi_firmware_init_vl805(struct pci_dev *pdev)
|
2020-03-08 13:31:15 +00:00
|
|
|
+{
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|
+ return 0;
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|
+}
|
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|
#endif
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|
#endif /* __SOC_RASPBERRY_FIRMWARE_H__ */
|
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|
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|
2020-03-25 12:26:55 +00:00
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From patchwork Tue Mar 24 18:28:11 2020
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2020-03-08 13:31:15 +00:00
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X-Patchwork-Submitter: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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2020-03-25 12:26:55 +00:00
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X-Patchwork-Id: 11456189
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2020-03-08 13:31:15 +00:00
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Return-Path:
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2020-03-25 12:26:55 +00:00
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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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To: linux-kernel@vger.kernel.org,
|
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Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
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Florian Fainelli <f.fainelli@gmail.com>,
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bcm-kernel-feedback-list@broadcom.com,
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Andrew Murray <amurray@thegoodpenguin.co.uk>
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2020-03-25 12:26:55 +00:00
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Subject: [PATCH v6 3/4] PCI: brcmstb: Wait for Raspberry Pi's firmware when
|
2020-03-08 13:31:15 +00:00
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present
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2020-03-25 12:26:55 +00:00
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Date: Tue, 24 Mar 2020 19:28:11 +0100
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|
2020-03-12 13:01:59 +00:00
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Cc: tim.gover@raspberrypi.org, sergei.shtylyov@cogentembedded.com,
|
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gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
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linux-rpi-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
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Bjorn Helgaas <bhelgaas@google.com>, linux-arm-kernel@lists.infradead.org,
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wahrenst@gmx.net
|
2020-03-08 13:31:15 +00:00
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Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
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Errors-To:
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linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
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xHCI's PCI fixup, run at the end of pcie-brcmstb's probe, depends on
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|
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RPi4's VideoCore firmware interface to be up and running. It's possible
|
2020-03-12 13:01:59 +00:00
|
|
|
for both initializations to race, so make sure it's available prior to
|
2020-03-08 13:31:15 +00:00
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starting.
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Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
|
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|
---
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drivers/pci/controller/pcie-brcmstb.c | 15 +++++++++++++++
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1 file changed, 15 insertions(+)
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diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
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index 3a10e678c7f4..a3d3070a5832 100644
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--- a/drivers/pci/controller/pcie-brcmstb.c
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+++ b/drivers/pci/controller/pcie-brcmstb.c
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@@ -28,6 +28,8 @@
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#include <linux/string.h>
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#include <linux/types.h>
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+#include <soc/bcm2835/raspberrypi-firmware.h>
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+
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|
|
#include "../pci.h"
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/* BRCM_PCIE_CAP_REGS - Offset for the mandatory capability config regs */
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@@ -917,11 +919,24 @@ static int brcm_pcie_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node, *msi_np;
|
|
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|
|
struct pci_host_bridge *bridge;
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+ struct device_node *fw_np;
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struct brcm_pcie *pcie;
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struct pci_bus *child;
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struct resource *res;
|
|
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|
|
int ret;
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|
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|
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|
|
|
|
+ /*
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|
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|
+ * We have to wait for the Raspberry Pi's firmware interface to be up
|
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|
+ * as some PCI fixups depend on it.
|
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|
|
|
+ */
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+ fw_np = of_find_compatible_node(NULL, NULL,
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+ "raspberrypi,bcm2835-firmware");
|
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+ if (fw_np && !rpi_firmware_get(fw_np)) {
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|
+ of_node_put(fw_np);
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|
|
+ return -EPROBE_DEFER;
|
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|
|
+ }
|
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|
+ of_node_put(fw_np);
|
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|
+
|
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|
|
bridge = devm_pci_alloc_host_bridge(&pdev->dev, sizeof(*pcie));
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|
|
if (!bridge)
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|
|
return -ENOMEM;
|
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|
2020-03-25 12:26:55 +00:00
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From patchwork Tue Mar 24 18:28:12 2020
|
2020-03-08 13:31:15 +00:00
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X-Patchwork-Submitter: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
|
2020-03-25 12:26:55 +00:00
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X-Patchwork-Id: 11456185
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2020-03-08 13:31:15 +00:00
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Return-Path:
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2020-03-25 12:26:55 +00:00
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<SRS0=7UWt=5J=lists.infradead.org=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@kernel.org>
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by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AD453174A
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for <patchwork-linux-arm@patchwork.kernel.org>;
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Tue, 24 Mar 2020 18:28:24 +0000 (UTC)
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2020-03-08 13:31:15 +00:00
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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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To: linux-kernel@vger.kernel.org,
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Mathias Nyman <mathias.nyman@intel.com>
|
2020-03-25 12:26:55 +00:00
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|
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Subject: [PATCH v6 4/4] USB: pci-quirks: Add Raspberry Pi 4 quirk
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Date: Tue, 24 Mar 2020 19:28:12 +0100
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References: <20200324182812.20420-1-nsaenzjulienne@suse.de>
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2020-03-08 13:31:15 +00:00
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0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3)
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0.0 RCVD_IN_MSPIKE_WL Mailspike good senders
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2020-03-12 13:01:59 +00:00
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Cc: f.fainelli@gmail.com, sergei.shtylyov@cogentembedded.com,
|
|
|
|
|
gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
|
2020-03-08 13:31:15 +00:00
|
|
|
Nicolas Saenz Julienne <nsaenzjulienne@suse.de>, tim.gover@raspberrypi.org,
|
|
|
|
|
bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org,
|
|
|
|
|
linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
|
|
|
|
|
wahrenst@gmx.net
|
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|
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Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
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Errors-To:
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linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
|
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|
|
|
|
|
|
|
On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be
|
|
|
|
|
loaded directly from an EEPROM or, if not present, by the SoC's
|
|
|
|
|
VideCore. Inform VideCore that VL805 was just reset.
|
|
|
|
|
|
2020-03-25 12:26:55 +00:00
|
|
|
Also, as this creates a dependency between USB_PCI and VideoCore's
|
|
|
|
|
firmware interface. Since USB_PCI can't be set as a module neither this
|
|
|
|
|
should.
|
2020-03-08 13:31:15 +00:00
|
|
|
|
|
|
|
|
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
|
|
|
|
|
---
|
|
|
|
|
|
2020-03-25 12:26:55 +00:00
|
|
|
Changes since v5:
|
|
|
|
|
- Fix Kconfig issue with allmodconfig
|
|
|
|
|
|
2020-03-12 13:01:59 +00:00
|
|
|
Changes since v4:
|
|
|
|
|
- Do not split up error message
|
|
|
|
|
|
2020-03-08 13:31:15 +00:00
|
|
|
Changes since v3:
|
2020-03-12 13:01:59 +00:00
|
|
|
- Add more complete error message
|
2020-03-08 13:31:15 +00:00
|
|
|
|
|
|
|
|
Changes since v1:
|
|
|
|
|
- Make RASPBERRYPI_FIRMWARE dependent on this quirk to make sure it
|
|
|
|
|
gets compiled when needed.
|
|
|
|
|
|
2020-03-25 12:26:55 +00:00
|
|
|
drivers/firmware/Kconfig | 3 ++-
|
2020-03-08 13:31:15 +00:00
|
|
|
drivers/usb/host/pci-quirks.c | 16 ++++++++++++++++
|
2020-03-25 12:26:55 +00:00
|
|
|
2 files changed, 18 insertions(+), 1 deletion(-)
|
2020-03-08 13:31:15 +00:00
|
|
|
|
|
|
|
|
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
|
2020-03-25 12:26:55 +00:00
|
|
|
index ea869addc89b..78ab2ad6d3f0 100644
|
2020-03-08 13:31:15 +00:00
|
|
|
--- a/drivers/firmware/Kconfig
|
|
|
|
|
+++ b/drivers/firmware/Kconfig
|
2020-03-25 12:26:55 +00:00
|
|
|
@@ -178,8 +178,9 @@ config ISCSI_IBFT
|
|
|
|
|
Otherwise, say N.
|
|
|
|
|
|
2020-03-08 13:31:15 +00:00
|
|
|
config RASPBERRYPI_FIRMWARE
|
2020-03-25 12:26:55 +00:00
|
|
|
- tristate "Raspberry Pi Firmware Driver"
|
|
|
|
|
+ bool "Raspberry Pi Firmware Driver"
|
2020-03-08 13:31:15 +00:00
|
|
|
depends on BCM2835_MBOX
|
2020-03-25 12:26:55 +00:00
|
|
|
+ default USB_PCI
|
2020-03-08 13:31:15 +00:00
|
|
|
help
|
|
|
|
|
This option enables support for communicating with the firmware on the
|
|
|
|
|
Raspberry Pi.
|
|
|
|
|
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
|
2020-03-12 13:01:59 +00:00
|
|
|
index beb2efa71341..0dc34668bb2a 100644
|
2020-03-08 13:31:15 +00:00
|
|
|
--- a/drivers/usb/host/pci-quirks.c
|
|
|
|
|
+++ b/drivers/usb/host/pci-quirks.c
|
|
|
|
|
@@ -16,6 +16,9 @@
|
|
|
|
|
#include <linux/export.h>
|
|
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#include <linux/acpi.h>
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#include <linux/dmi.h>
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+
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+#include <soc/bcm2835/raspberrypi-firmware.h>
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+
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#include "pci-quirks.h"
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#include "xhci-ext-caps.h"
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@@ -1243,11 +1246,24 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev)
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static void quirk_usb_early_handoff(struct pci_dev *pdev)
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{
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+ int ret;
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+
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/* Skip Netlogic mips SoC's internal PCI USB controller.
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* This device does not need/support EHCI/OHCI handoff
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*/
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if (pdev->vendor == 0x184e) /* vendor Netlogic */
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return;
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+
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+ if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) {
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+ ret = rpi_firmware_init_vl805(pdev);
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+ if (ret) {
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+ /* Firmware might be outdated, or something failed */
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2020-03-12 13:01:59 +00:00
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+ dev_warn(&pdev->dev,
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+ "Failed to load VL805's firmware: %d. Will continue to attempt to work, but bad things might happen. You should fix this...\n",
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+ ret);
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2020-03-08 13:31:15 +00:00
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+ }
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+ }
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+
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if (pdev->class != PCI_CLASS_SERIAL_USB_UHCI &&
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pdev->class != PCI_CLASS_SERIAL_USB_OHCI &&
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pdev->class != PCI_CLASS_SERIAL_USB_EHCI &&
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