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Subject[PATCH v5 8/9] Revert "firmware: raspberrypi: Introduce vl805 init routine"
Date
This reverts commit fbbc5ff3f7f9f4cad562e530ae2cf5d8964fe6d3.

The vl805 init routine has moved into drivers/reset/reset-raspberrypi.c

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---
drivers/firmware/raspberrypi.c | 61 ----------------------
include/soc/bcm2835/raspberrypi-firmware.h | 7 ---
2 files changed, 68 deletions(-)

diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
index 625c8fdceabf..c1b054e71f19 100644
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -12,8 +12,6 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
#include <soc/bcm2835/raspberrypi-firmware.h>

#define MBOX_MSG(chan, data28) (((data28) & ~0xf) | ((chan) & 0xf))
@@ -21,8 +19,6 @@
#define MBOX_DATA28(msg) ((msg) & ~0xf)
#define MBOX_CHAN_PROPERTY 8

-#define VL805_PCI_CONFIG_VERSION_OFFSET 0x50
-
static struct platform_device *rpi_hwmon;
static struct platform_device *rpi_clk;

@@ -287,63 +283,6 @@ struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
}
EXPORT_SYMBOL_GPL(rpi_firmware_get);

-/*
- * The Raspberry Pi 4 gets its USB functionality from VL805, a PCIe chip that
- * implements xHCI. After a PCI reset, VL805's firmware may either be loaded
- * directly from an EEPROM or, if not present, by the SoC's co-processor,
- * VideoCore. RPi4's VideoCore OS contains both the non public firmware load
- * logic and the VL805 firmware blob. This function triggers the aforementioned
- * process.
- */
-int rpi_firmware_init_vl805(struct pci_dev *pdev)
-{
- struct device_node *fw_np;
- struct rpi_firmware *fw;
- u32 dev_addr, version;
- 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 -ENODEV;
-
- /*
- * Make sure we don't trigger a firmware load unnecessarily.
- *
- * If something went wrong with PCI, this whole exercise would be
- * futile as VideoCore expects from us a configured PCI bus. Just take
- * the faulty version (likely ~0) and let xHCI's registration fail
- * further down the line.
- */
- pci_read_config_dword(pdev, VL805_PCI_CONFIG_VERSION_OFFSET, &version);
- if (version)
- goto exit;
-
- 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;
-
- /* Wait for vl805 to startup */
- usleep_range(200, 1000);
-
- pci_read_config_dword(pdev, VL805_PCI_CONFIG_VERSION_OFFSET,
- &version);
-exit:
- pci_info(pdev, "VL805 firmware version %08x\n", version);
-
- 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 3025aca3c358..cc9cdbc66403 100644
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -10,7 +10,6 @@
#include <linux/of_device.h>

struct rpi_firmware;
-struct pci_dev;

enum rpi_firmware_property_status {
RPI_FIRMWARE_STATUS_REQUEST = 0,
@@ -142,7 +141,6 @@ 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)
@@ -160,11 +158,6 @@ 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__ */
--
2.27.0
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