apm821xx: 4.14: remove kernel config and patches

This patch removes the 4.14 kernel support from the apm821xx target.
The 4.19 kernel has been available and stable for a while and the 5.4
kernel support has been tested successfully on real hardware as well.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

1 files changed, 0 insertions, 545 deletions

diff --git a/target/linux/apm821xx/patches-4.14/801-usb-xhci-add-firmware-loader-for-uPD720201-and-uPD72.patch b/target/linux/apm821xx/patches-4.14/801-usb-xhci-add-firmware-loader-for-uPD720201-and-uPD72.patch
deleted file mode 100644
index 892cdaef33..0000000000
--- a/target/linux/apm821xx/patches-4.14/801-usb-xhci-add-firmware-loader-for-uPD720201-and-uPD72.patch
+++ /dev/null
@@ -1,545 +0,0 @@
-From 419992bae5aaa4e06402e0b7c79fcf7bcb6b4764 Mon Sep 17 00:00:00 2001
-From: Christian Lamparter <chunkeey@googlemail.com>
-Date: Thu, 2 Jun 2016 00:48:46 +0200
-Subject: [PATCH] usb: xhci: add firmware loader for uPD720201 and uPD720202
- w/o ROM
-
-This patch adds a firmware loader for the uPD720201K8-711-BAC-A
-and uPD720202K8-711-BAA-A variant. Both of these chips are listed
-in Renesas' R19UH0078EJ0500 Rev.5.00 "User's Manual: Hardware" as
-devices which need the firmware loader on page 2 in order to
-work as they "do not support the External ROM".
-
-The "Firmware Download Sequence" is describe in chapter
-"7.1 FW Download Interface" R19UH0078EJ0500 Rev.5.00 page 131.
-
-The firmware "K2013080.mem" is available from a USB3.0 Host to
-PCIe Adapter (PP2U-E card) "Firmware download" archive. An
-alternative version can be sourced from Netgear's WNDR4700 GPL
-archives.
-
-The release notes of the PP2U-E's "Firmware Download" ver 2.0.1.3
-(2012-06-15) state that the firmware is for the following devices:
- - uPD720201 ES 2.0 sample whose revision ID is 2.
- - uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
- - uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
-
-If someone from Renesas is listening: It would be great, if these
-firmwares could be added to linux-firmware.git.
-
-Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
-Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
----
- drivers/usb/host/xhci-pci.c | 492 ++++++++++++++++++++++++++++++++++++++++++++
- 1 file changed, 492 insertions(+)
-
---- a/drivers/usb/host/xhci-pci.c
-+++ b/drivers/usb/host/xhci-pci.c
-@@ -24,6 +24,8 @@
- #include <linux/slab.h>
- #include <linux/module.h>
- #include <linux/acpi.h>
-+#include <linux/firmware.h>
-+#include <asm/unaligned.h>
- 
- #include "xhci.h"
- #include "xhci-trace.h"
-@@ -268,6 +270,458 @@ static void xhci_pme_acpi_rtd3_enable(st
- static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
- #endif /* CONFIG_ACPI */
- 
-+static const struct renesas_fw_entry {
-+	const char *firmware_name;
-+	u16 device;
-+	u8 revision;
-+	u16 expected_version;
-+} renesas_fw_table[] = {
-+	/*
-+	 * Only the uPD720201K8-711-BAC-A or uPD720202K8-711-BAA-A
-+	 * are listed in R19UH0078EJ0500 Rev.5.00 as devices which
-+	 * need the software loader.
-+	 *
-+	 * PP2U/ReleaseNote_USB3-201-202-FW.txt:
-+	 *
-+	 * Note: This firmware is for the following devices.
-+	 *  - uPD720201 ES 2.0 sample whose revision ID is 2.
-+	 *  - uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
-+	 *  - uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
-+	 */
-+	{ "K2013080.mem", 0x0014, 0x02, 0x2013 },
-+	{ "K2013080.mem", 0x0014, 0x03, 0x2013 },
-+	{ "K2013080.mem", 0x0015, 0x02, 0x2013 },
-+};
-+
-+static const struct renesas_fw_entry *renesas_needs_fw_dl(struct pci_dev *dev)
-+{
-+	const struct renesas_fw_entry *entry;
-+	size_t i;
-+
-+	/* This loader will only work with a RENESAS device. */
-+	if (!(dev->vendor == PCI_VENDOR_ID_RENESAS))
-+		return NULL;
-+
-+	for (i = 0; i < ARRAY_SIZE(renesas_fw_table); i++) {
-+		entry = &renesas_fw_table[i];
-+		if (entry->device == dev->device &&
-+		    entry->revision == dev->revision)
-+			return entry;
-+	}
-+
-+	return NULL;
-+}
-+
-+static int renesas_fw_download_image(struct pci_dev *dev,
-+				     const u32 *fw,
-+				     size_t step)
-+{
-+	size_t i;
-+	int err;
-+	u8 fw_status;
-+	bool data0_or_data1;
-+
-+	/*
-+	 * The hardware does alternate between two 32-bit pages.
-+	 * (This is because each row of the firmware is 8 bytes).
-+	 *
-+	 * for even steps we use DATA0, for odd steps DATA1.
-+	 */
-+	data0_or_data1 = (step & 1) == 1;
-+
-+	/* step+1. Read "Set DATAX" and confirm it is cleared. */
-+	for (i = 0; i < 10000; i++) {
-+		err = pci_read_config_byte(dev, 0xF5, &fw_status);
-+		if (err)
-+			return pcibios_err_to_errno(err);
-+		if (!(fw_status & BIT(data0_or_data1)))
-+			break;
-+
-+		udelay(1);
-+	}
-+	if (i == 10000)
-+		return -ETIMEDOUT;
-+
-+	/*
-+	 * step+2. Write FW data to "DATAX".
-+	 * "LSB is left" => force little endian
-+	 */
-+	err = pci_write_config_dword(dev, data0_or_data1 ? 0xFC : 0xF8,
-+				     (__force u32) cpu_to_le32(fw[step]));
-+	if (err)
-+		return pcibios_err_to_errno(err);
-+
-+	udelay(100);
-+
-+	/* step+3. Set "Set DATAX". */
-+	err = pci_write_config_byte(dev, 0xF5, BIT(data0_or_data1));
-+	if (err)
-+		return pcibios_err_to_errno(err);
-+
-+	return 0;
-+}
-+
-+static int renesas_fw_verify(struct pci_dev *dev,
-+			     const void *fw_data,
-+			     size_t length)
-+{
-+	const struct renesas_fw_entry *entry = renesas_needs_fw_dl(dev);
-+	u16 fw_version_pointer;
-+	u16 fw_version;
-+
-+	if (!entry)
-+		return -EINVAL;
-+
-+	/*
-+	 * The Firmware's Data Format is describe in
-+	 * "6.3 Data Format" R19UH0078EJ0500 Rev.5.00 page 124
-+	 */
-+
-+	/* "Each row is 8 bytes". => firmware size must be a multiple of 8. */
-+	if (length % 8 != 0) {
-+		dev_err(&dev->dev, "firmware size is not a multipe of 8.");
-+		return -EINVAL;
-+	}
-+
-+	/*
-+	 * The bootrom chips of the big brother have sizes up to 64k, let's
-+	 * assume that's the biggest the firmware can get.
-+	 */
-+	if (length < 0x1000 || length >= 0x10000) {
-+		dev_err(&dev->dev, "firmware is size %zd is not (4k - 64k).",
-+			length);
-+		return -EINVAL;
-+	}
-+
-+	/* The First 2 bytes are fixed value (55aa). "LSB on Left" */
-+	if (get_unaligned_le16(fw_data) != 0x55aa) {
-+		dev_err(&dev->dev, "no valid firmware header found.");
-+		return -EINVAL;
-+	}
-+
-+	/* verify the firmware version position and print it. */
-+	fw_version_pointer = get_unaligned_le16(fw_data + 4);
-+	if (fw_version_pointer + 2 >= length) {
-+		dev_err(&dev->dev, "firmware version pointer is outside of the firmware image.");
-+		return -EINVAL;
-+	}
-+
-+	fw_version = get_unaligned_le16(fw_data + fw_version_pointer);
-+	dev_dbg(&dev->dev, "got firmware version: %02x.", fw_version);
-+
-+	if (fw_version != entry->expected_version) {
-+		dev_err(&dev->dev, "firmware version mismatch, expected version: %02x.",
-+			 entry->expected_version);
-+		return -EINVAL;
-+	}
-+
-+	return 0;
-+}
-+
-+static int renesas_fw_check_running(struct pci_dev *pdev)
-+{
-+	int err;
-+	u8 fw_state;
-+
-+	/*
-+	 * Test if the device is actually needing the firmware. As most
-+	 * BIOSes will initialize the device for us. If the device is
-+	 * initialized.
-+	 */
-+	err = pci_read_config_byte(pdev, 0xF4, &fw_state);
-+	if (err)
-+		return pcibios_err_to_errno(err);
-+
-+	/*
-+	 * Check if "FW Download Lock" is locked. If it is and the FW is
-+	 * ready we can simply continue. If the FW is not ready, we have
-+	 * to give up.
-+	 */
-+	if (fw_state & BIT(1)) {
-+		dev_dbg(&pdev->dev, "FW Download Lock is engaged.");
-+
-+		if (fw_state & BIT(4))
-+			return 0;
-+
-+		dev_err(&pdev->dev, "FW Download Lock is set and FW is not ready. Giving Up.");
-+		return -EIO;
-+	}
-+
-+	/*
-+	 * Check if "FW Download Enable" is set. If someone (us?) tampered
-+	 * with it and it can't be resetted, we have to give up too... and
-+	 * ask for a forgiveness and a reboot.
-+	 */
-+	if (fw_state & BIT(0)) {
-+		dev_err(&pdev->dev, "FW Download Enable is stale. Giving Up (poweroff/reboot needed).");
-+		return -EIO;
-+	}
-+
-+	/* Otherwise, Check the "Result Code" Bits (6:4) and act accordingly */
-+	switch ((fw_state & 0x70)) {
-+	case 0: /* No result yet */
-+		dev_dbg(&pdev->dev, "FW is not ready/loaded yet.");
-+
-+		/* tell the caller, that this device needs the firmware. */
-+		return 1;
-+
-+	case BIT(4): /* Success, device should be working. */
-+		dev_dbg(&pdev->dev, "FW is ready.");
-+		return 0;
-+
-+	case BIT(5): /* Error State */
-+		dev_err(&pdev->dev, "hardware is in an error state. Giving up (poweroff/reboot needed).");
-+		return -ENODEV;
-+
-+	default: /* All other states are marked as "Reserved states" */
-+		dev_err(&pdev->dev, "hardware is in an invalid state %x. Giving up (poweroff/reboot needed).",
-+			(fw_state & 0x70) >> 4);
-+		return -EINVAL;
-+	}
-+}
-+
-+static int renesas_hw_check_run_stop_busy(struct pci_dev *pdev)
-+{
-+#if 0
-+	u32 val;
-+
-+	/*
-+	 * 7.1.3 Note 3: "... must not set 'FW Download Enable' when
-+	 * 'RUN/STOP' of USBCMD Register is set"
-+	 */
-+	val = readl(hcd->regs + 0x20);
-+	if (val & BIT(0)) {
-+		dev_err(&pdev->dev, "hardware is busy and can't receive a FW.");
-+		return -EBUSY;
-+	}
-+#endif
-+	return 0;
-+}
-+
-+static int renesas_fw_download(struct pci_dev *pdev,
-+	const struct firmware *fw, unsigned int retry_counter)
-+{
-+	const u32 *fw_data = (const u32 *) fw->data;
-+	size_t i;
-+	int err;
-+	u8 fw_status;
-+
-+	/*
-+	 * For more information and the big picture: please look at the
-+	 * "Firmware Download Sequence" in "7.1 FW Download Interface"
-+	 * of R19UH0078EJ0500 Rev.5.00 page 131
-+	 */
-+	err = renesas_hw_check_run_stop_busy(pdev);
-+	if (err)
-+		return err;
-+
-+	/*
-+	 * 0. Set "FW Download Enable" bit in the
-+	 * "FW Download Control & Status Register" at 0xF4
-+	 */
-+	err = pci_write_config_byte(pdev, 0xF4, BIT(0));
-+	if (err)
-+		return pcibios_err_to_errno(err);
-+
-+	/* 1 - 10 follow one step after the other. */
-+	for (i = 0; i < fw->size / 4; i++) {
-+		err = renesas_fw_download_image(pdev, fw_data, i);
-+		if (err) {
-+			dev_err(&pdev->dev, "Firmware Download Step %zd failed at position %zd bytes with (%d).",
-+				 i, i * 4, err);
-+			return err;
-+		}
-+	}
-+
-+	/*
-+	 * This sequence continues until the last data is written to
-+	 * "DATA0" or "DATA1". Naturally, we wait until "SET DATA0/1"
-+	 * is cleared by the hardware beforehand.
-+	 */
-+	for (i = 0; i < 10000; i++) {
-+		err = pci_read_config_byte(pdev, 0xF5, &fw_status);
-+		if (err)
-+			return pcibios_err_to_errno(err);
-+		if (!(fw_status & (BIT(0) | BIT(1))))
-+			break;
-+
-+		udelay(1);
-+	}
-+	if (i == 10000)
-+		dev_warn(&pdev->dev, "Final Firmware Download step timed out.");
-+
-+	/*
-+	 * 11. After finishing writing the last data of FW, the
-+	 * System Software must clear "FW Download Enable"
-+	 */
-+	err = pci_write_config_byte(pdev, 0xF4, 0);
-+	if (err)
-+		return pcibios_err_to_errno(err);
-+
-+	/* 12. Read "Result Code" and confirm it is good. */
-+	for (i = 0; i < 10000; i++) {
-+		err = pci_read_config_byte(pdev, 0xF4, &fw_status);
-+		if (err)
-+			return pcibios_err_to_errno(err);
-+		if (fw_status & BIT(4))
-+			break;
-+
-+		udelay(1);
-+	}
-+	if (i == 10000) {
-+		/* Timed out / Error - let's see if we can fix this */
-+		err = renesas_fw_check_running(pdev);
-+		switch (err) {
-+		case 0: /*
-+			 * we shouldn't end up here.
-+			 * maybe it took a little bit longer.
-+			 * But all should be well?
-+			 */
-+			break;
-+
-+		case 1: /* (No result yet? - we can try to retry) */
-+			if (retry_counter < 10) {
-+				retry_counter++;
-+				dev_warn(&pdev->dev, "Retry Firmware download: %d try.",
-+					  retry_counter);
-+				return renesas_fw_download(pdev, fw,
-+							   retry_counter);
-+			}
-+			return -ETIMEDOUT;
-+
-+		default:
-+			return err;
-+		}
-+	}
-+	/*
-+	 * Optional last step: Engage Firmware Lock
-+	 *
-+	 * err = pci_write_config_byte(pdev, 0xF4, BIT(2));
-+	 * if (err)
-+	 *	return pcibios_err_to_errno(err);
-+	 */
-+
-+	return 0;
-+}
-+
-+struct renesas_fw_ctx {
-+	struct pci_dev *pdev;
-+	const struct pci_device_id *id;
-+	bool resume;
-+};
-+
-+static int xhci_pci_probe(struct pci_dev *pdev,
-+			  const struct pci_device_id *id);
-+
-+static void renesas_fw_callback(const struct firmware *fw,
-+				void *context)
-+{
-+	struct renesas_fw_ctx *ctx = context;
-+	struct pci_dev *pdev = ctx->pdev;
-+	struct device *parent = pdev->dev.parent;
-+	int err = -ENOENT;
-+
-+	if (fw) {
-+		err = renesas_fw_verify(pdev, fw->data, fw->size);
-+		if (!err) {
-+			err = renesas_fw_download(pdev, fw, 0);
-+			release_firmware(fw);
-+			if (!err) {
-+				if (ctx->resume)
-+					return;
-+
-+				err = xhci_pci_probe(pdev, ctx->id);
-+				if (!err) {
-+					/* everything worked */
-+					devm_kfree(&pdev->dev, ctx);
-+					return;
-+				}
-+
-+				/* in case of an error - fall through */
-+			} else {
-+				dev_err(&pdev->dev, "firmware failed to download (%d).",
-+					err);
-+			}
-+		}
-+	} else {
-+		dev_err(&pdev->dev, "firmware failed to load (%d).", err);
-+	}
-+
-+	dev_info(&pdev->dev, "Unloading driver");
-+
-+	if (parent)
-+		device_lock(parent);
-+
-+	device_release_driver(&pdev->dev);
-+
-+	if (parent)
-+		device_unlock(parent);
-+
-+	pci_dev_put(pdev);
-+}
-+
-+static int renesas_fw_alive_check(struct pci_dev *pdev)
-+{
-+	const struct renesas_fw_entry *entry;
-+	int err;
-+
-+	/* check if we have a eligible RENESAS' uPD720201/2 w/o FW. */
-+	entry = renesas_needs_fw_dl(pdev);
-+	if (!entry)
-+		return 0;
-+
-+	err = renesas_fw_check_running(pdev);
-+	/* Also go ahead, if the firmware is running */
-+	if (err == 0)
-+		return 0;
-+
-+	/* At this point, we can be sure that the FW isn't ready. */
-+	return err;
-+}
-+
-+static int renesas_fw_download_to_hw(struct pci_dev *pdev,
-+				     const struct pci_device_id *id,
-+				     bool do_resume)
-+{
-+	const struct renesas_fw_entry *entry;
-+	struct renesas_fw_ctx *ctx;
-+	int err;
-+
-+	/* check if we have a eligible RENESAS' uPD720201/2 w/o FW. */
-+	entry = renesas_needs_fw_dl(pdev);
-+	if (!entry)
-+		return 0;
-+
-+	err = renesas_fw_check_running(pdev);
-+	/* Continue ahead, if the firmware is already running. */
-+	if (err == 0)
-+		return 0;
-+
-+	if (err != 1)
-+		return err;
-+
-+	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
-+	if (!ctx)
-+		return -ENOMEM;
-+	ctx->pdev = pdev;
-+	ctx->resume = do_resume;
-+	ctx->id = id;
-+
-+	pci_dev_get(pdev);
-+	err = request_firmware_nowait(THIS_MODULE, 1, entry->firmware_name,
-+		&pdev->dev, GFP_KERNEL, ctx, renesas_fw_callback);
-+	if (err) {
-+		pci_dev_put(pdev);
-+		return err;
-+	}
-+
-+	/*
-+	 * The renesas_fw_callback() callback will continue the probe
-+	 * process, once it aquires the firmware.
-+	 */
-+	return 1;
-+}
-+
- /* called during probe() after chip reset completes */
- static int xhci_pci_setup(struct usb_hcd *hcd)
- {
-@@ -306,6 +760,22 @@ static int xhci_pci_probe(struct pci_dev
- 	struct hc_driver *driver;
- 	struct usb_hcd *hcd;
- 
-+	/*
-+	 * Check if this device is a RENESAS uPD720201/2 device.
-+	 * Otherwise, we can continue with xhci_pci_probe as usual.
-+	 */
-+	retval = renesas_fw_download_to_hw(dev, id, false);
-+	switch (retval) {
-+	case 0:
-+		break;
-+
-+	case 1: /* let it load the firmware and recontinue the probe. */
-+		return 0;
-+
-+	default:
-+		return retval;
-+	}
-+
- 	driver = (struct hc_driver *)id->driver_data;
- 
- 	/* For some HW implementation, a XHCI reset is just not enough... */
-@@ -367,6 +837,16 @@ static void xhci_pci_remove(struct pci_d
- {
- 	struct xhci_hcd *xhci;
- 
-+	if (renesas_fw_alive_check(dev)) {
-+		/*
-+		 * bail out early, if this was a renesas device w/o FW.
-+		 * Else we might hit the NMI watchdog in xhci_handsake
-+		 * during xhci_reset as part of the driver's unloading.
-+		 * which we forced in the renesas_fw_callback().
-+		 */
-+		return;
-+	}
-+
- 	xhci = hcd_to_xhci(pci_get_drvdata(dev));
- 	xhci->xhc_state |= XHCI_STATE_REMOVING;
- 	if (xhci->shared_hcd) {