summaryrefslogtreecommitdiff
path: root/SOURCES/0001-firmware-raspberrypi-Introduce-vl805-init-routine.patch
diff options
context:
space:
mode:
Diffstat (limited to 'SOURCES/0001-firmware-raspberrypi-Introduce-vl805-init-routine.patch')
-rw-r--r--SOURCES/0001-firmware-raspberrypi-Introduce-vl805-init-routine.patch110
1 files changed, 0 insertions, 110 deletions
diff --git a/SOURCES/0001-firmware-raspberrypi-Introduce-vl805-init-routine.patch b/SOURCES/0001-firmware-raspberrypi-Introduce-vl805-init-routine.patch
deleted file mode 100644
index db8a4a1..0000000
--- a/SOURCES/0001-firmware-raspberrypi-Introduce-vl805-init-routine.patch
+++ /dev/null
@@ -1,110 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
-Date: Tue, 10 Mar 2020 13:52:40 +0100
-Subject: [PATCH] firmware: raspberrypi: Introduce vl805 init routine
-
-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. The function informs VideCore that VL805 was just reset, or
-requests for a probe defer.
-
-Based on Tim Gover's downstream implementation.
-
-Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
-Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
----
- drivers/firmware/raspberrypi.c | 38 ++++++++++++++++++++++
- include/soc/bcm2835/raspberrypi-firmware.h | 7 ++++
- 2 files changed, 45 insertions(+)
-
-diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
-index da26a584dca0..cbb495aff6a0 100644
---- a/drivers/firmware/raspberrypi.c
-+++ b/drivers/firmware/raspberrypi.c
-@@ -12,6 +12,7 @@
- #include <linux/of_platform.h>
- #include <linux/platform_device.h>
- #include <linux/slab.h>
-+#include <linux/pci.h>
- #include <soc/bcm2835/raspberrypi-firmware.h>
-
- #define MBOX_MSG(chan, data28) (((data28) & ~0xf) | ((chan) & 0xf))
-@@ -286,6 +287,43 @@ struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
- }
- EXPORT_SYMBOL_GPL(rpi_firmware_get);
-
-+/*
-+ * 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, or defer xhci's probe if not yet
-+ * joinable trough the mailbox interface.
-+ */
-+int rpi_firmware_init_vl805(struct pci_dev *pdev)
-+{
-+ struct device_node *fw_np;
-+ struct rpi_firmware *fw;
-+ u32 dev_addr;
-+ int ret;
-+
-+ fw_np = of_find_compatible_node(NULL, NULL,
-+ "raspberrypi,bcm2835-firmware");
-+ if (!fw_np)
-+ return 0;
-+
-+ fw = rpi_firmware_get(fw_np);
-+ of_node_put(fw_np);
-+ if (!fw)
-+ return -EPROBE_DEFER;
-+
-+ dev_addr = pdev->bus->number << 20 | PCI_SLOT(pdev->devfn) << 15 |
-+ PCI_FUNC(pdev->devfn) << 12;
-+
-+ ret = rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_XHCI_RESET,
-+ &dev_addr, sizeof(dev_addr));
-+ if (ret)
-+ return ret;
-+
-+ dev_dbg(&pdev->dev, "loaded Raspberry Pi's VL805 firmware\n");
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL_GPL(rpi_firmware_init_vl805);
-+
- static const struct of_device_id rpi_firmware_of_match[] = {
- { .compatible = "raspberrypi,bcm2835-firmware", },
- {},
-diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
-index cc9cdbc66403..3025aca3c358 100644
---- a/include/soc/bcm2835/raspberrypi-firmware.h
-+++ b/include/soc/bcm2835/raspberrypi-firmware.h
-@@ -10,6 +10,7 @@
- #include <linux/of_device.h>
-
- struct rpi_firmware;
-+struct pci_dev;
-
- enum rpi_firmware_property_status {
- RPI_FIRMWARE_STATUS_REQUEST = 0,
-@@ -141,6 +142,7 @@ int rpi_firmware_property(struct rpi_firmware *fw,
- int rpi_firmware_property_list(struct rpi_firmware *fw,
- void *data, size_t tag_size);
- struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
-+int rpi_firmware_init_vl805(struct pci_dev *pdev);
- #else
- static inline int rpi_firmware_property(struct rpi_firmware *fw, u32 tag,
- void *data, size_t len)
-@@ -158,6 +160,11 @@ static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware
- {
- return NULL;
- }
-+
-+static inline int rpi_firmware_init_vl805(struct pci_dev *pdev)
-+{
-+ return 0;
-+}
- #endif
-
- #endif /* __SOC_RASPBERRY_FIRMWARE_H__ */
---
-2.26.2
-