brcm2708: add kernel 4.14 support

Patch generation process:
- rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable
- git format-patch v4.14.89

Patches skipped during rebase:
- lan78xx: Read MAC address from DT if present
- lan78xx: Enable LEDs and auto-negotiation
- Revert "softirq: Let ksoftirqd do its job"
- sc16is7xx: Fix for multi-channel stall
- lan78xx: Ignore DT MAC address if already valid
- lan78xx: Simple patch to prevent some crashes
- tcp_write_queue_purge clears all the SKBs in the write queue
- Revert "lan78xx: Simple patch to prevent some crashes"
- lan78xx: Connect phy early
- Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro
- Revert "Revert "softirq: Let ksoftirqd do its job""
- ASoC: cs4265: SOC_SINGLE register value error fix
- Revert "ASoC: cs4265: SOC_SINGLE register value error fix"
- Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"
- Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends""

Patches dropped after rebase:
- net: Add non-mainline source for rtl8192cu wlan
- net: Fix rtl8192cu build errors on other platforms
- brcm: adds support for BCM43341 wifi
- brcmfmac: Mute expected startup 'errors'
- ARM64: Fix build break for RTL8187/RTL8192CU wifi
- ARM64: Enable RTL8187/RTL8192CU wifi in build config
- This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator
- brcmfmac: add CLM download support
- brcmfmac: request_firmware_direct is quieter
- Sets the BCDC priority to constant 0
- brcmfmac: Disable ARP offloading when promiscuous
- brcmfmac: Avoid possible out-of-bounds read
- brcmfmac: Delete redundant length check
- net: rtl8192cu: Normalize indentation
- net: rtl8192cu: Fix implicit fallthrough warnings
- Revert "Sets the BCDC priority to constant 0"
- media: cxd2880: Bump to match 4.18.y version
- media: cxd2880-spi: Bump to match 4.18.y version
- Revert "mm: alloc_contig: re-allow CMA to compact FS pages"
- Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages""
- cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with
  MEDIA_SUBDRV_AUTOSELECT
- 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch
- 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch

Make I2C built-in instead of modular as in upstream defconfig; also the
easiest way to get MFD_ARIZONA enabled, which is required by
kmod-sound-soc-rpi-cirrus.
Add missing compatible strings from
4.9/960-add-rasbperrypi-compatible.patch, using upstream names for
compute modules.
Add extra patch to enable the LEDs on lan78xx.

Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y)
Runtime-tested: bcm2708, bcm2710

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

1 files changed, 73 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0176-drm-vc4-Fix-sleeps-during-the-IRQ-handler-for-DSI-tr.patch b/target/linux/brcm2708/patches-4.14/950-0176-drm-vc4-Fix-sleeps-during-the-IRQ-handler-for-DSI-tr.patch
new file mode 100644
index 0000000000..d6949b617b
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0176-drm-vc4-Fix-sleeps-during-the-IRQ-handler-for-DSI-tr.patch
@@ -0,0 +1,73 @@
+From 659c52fe8a86264c5119c0592654898d09fe8f28 Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Fri, 13 Oct 2017 17:12:55 -0700
+Subject: [PATCH 176/454] drm/vc4: Fix sleeps during the IRQ handler for DSI
+ transactions.
+
+VC4's DSI1 has a bug where the AXI connection is broken for 32-bit
+writes from the CPU, so we use the DMA engine to DMA 32-bit values
+into registers instead.  That sleeps, so we can't do it from the top
+half.
+
+As a solution, use an interrupt thread so that all our writes happen
+when sleeping is is allowed.
+
+v2: Use IRQF_ONESHOT (suggested by Boris)
+v3: Style nitpicks.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+Link: https://patchwork.freedesktop.org/patch/msgid/20171014001255.32005-1-eric@anholt.net
+Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> (v2)
+(cherry picked from commit af0c8c10564aac5b6d67308129ec09c4ad5db476)
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 32 ++++++++++++++++++++++++++++++--
+ 1 file changed, 30 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -1383,6 +1383,27 @@ static void dsi_handle_error(struct vc4_
+ 	*ret = IRQ_HANDLED;
+ }
+ 
++/*
++ * Initial handler for port 1 where we need the reg_dma workaround.
++ * The register DMA writes sleep, so we can't do it in the top half.
++ * Instead we use IRQF_ONESHOT so that the IRQ gets disabled in the
++ * parent interrupt contrller until our interrupt thread is done.
++ */
++static irqreturn_t vc4_dsi_irq_defer_to_thread_handler(int irq, void *data)
++{
++	struct vc4_dsi *dsi = data;
++	u32 stat = DSI_PORT_READ(INT_STAT);
++
++	if (!stat)
++		return IRQ_NONE;
++
++	return IRQ_WAKE_THREAD;
++}
++
++/*
++ * Normal IRQ handler for port 0, or the threaded IRQ handler for port
++ * 1 where we need the reg_dma workaround.
++ */
+ static irqreturn_t vc4_dsi_irq_handler(int irq, void *data)
+ {
+ 	struct vc4_dsi *dsi = data;
+@@ -1566,8 +1587,15 @@ static int vc4_dsi_bind(struct device *d
+ 	/* Clear any existing interrupt state. */
+ 	DSI_PORT_WRITE(INT_STAT, DSI_PORT_READ(INT_STAT));
+ 
+-	ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
+-			       vc4_dsi_irq_handler, 0, "vc4 dsi", dsi);
++	if (dsi->reg_dma_mem)
++		ret = devm_request_threaded_irq(dev, platform_get_irq(pdev, 0),
++						vc4_dsi_irq_defer_to_thread_handler,
++						vc4_dsi_irq_handler,
++						IRQF_ONESHOT,
++						"vc4 dsi", dsi);
++	else
++		ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
++				       vc4_dsi_irq_handler, 0, "vc4 dsi", dsi);
+ 	if (ret) {
+ 		if (ret != -EPROBE_DEFER)
+ 			dev_err(dev, "Failed to get interrupt: %d\n", ret);