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, 239 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0371-staging-bcm2835-camera-Remove-V4L2-MMAL-buffer-remap.patch b/target/linux/brcm2708/patches-4.14/950-0371-staging-bcm2835-camera-Remove-V4L2-MMAL-buffer-remap.patch
new file mode 100644
index 0000000000..c3d5ea7291
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0371-staging-bcm2835-camera-Remove-V4L2-MMAL-buffer-remap.patch
@@ -0,0 +1,239 @@
+From 0d3b557ef5494adf6458fe4e6f4a9b41e6e0d12a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Thu, 10 May 2018 12:42:11 -0700
+Subject: [PATCH 371/454] staging: bcm2835-camera: Remove V4L2/MMAL buffer
+ remapping
+
+commit 9384167070713570a25f854d641979e94163c425 upstream
+
+The MMAL and V4L2 buffers had been disassociated, and linked on
+demand.  Seeing as both are finite and low in number, and we now have
+the same number of each, link them for the duration.  This removes the
+complexity of maintaining lists as the struct mmal_buffer context
+comes back from the VPU, so we can directly link back to the relevant
+V4L2 buffer.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Signed-off-by: Eric Anholt <eric@anholt.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ .../bcm2835-camera/bcm2835-camera.c           |   7 +-
+ .../vc04_services/bcm2835-camera/mmal-vchiq.c | 109 ++++--------------
+ 2 files changed, 29 insertions(+), 87 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+@@ -301,8 +301,8 @@ static int buffer_prepare(struct vb2_buf
+ 	struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
+ 	unsigned long size;
+ 
+-	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n",
+-		 __func__, dev);
++	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p, vb %p\n",
++		 __func__, dev, vb);
+ 
+ 	BUG_ON(!dev->capture.port);
+ 	BUG_ON(!dev->capture.fmt);
+@@ -522,7 +522,8 @@ static void buffer_queue(struct vb2_buff
+ 	int ret;
+ 
+ 	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+-		 "%s: dev:%p buf:%p\n", __func__, dev, buf);
++		 "%s: dev:%p buf:%p, idx %u\n",
++		 __func__, dev, buf, vb2->vb2_buf.index);
+ 
+ 	ret = vchiq_mmal_submit_buffer(dev->instance, dev->capture.port, buf);
+ 	if (ret < 0)
+--- a/drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c
+@@ -329,16 +329,12 @@ static int bulk_receive(struct vchiq_mma
+ 			struct mmal_msg_context *msg_context)
+ {
+ 	unsigned long rd_len;
+-	unsigned long flags = 0;
+ 	int ret;
+ 
+ 	rd_len = msg->u.buffer_from_host.buffer_header.length;
+ 
+-	/* take buffer from queue */
+-	spin_lock_irqsave(&msg_context->u.bulk.port->slock, flags);
+-	if (list_empty(&msg_context->u.bulk.port->buffers)) {
+-		spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags);
+-		pr_err("buffer list empty trying to submit bulk receive\n");
++	if (!msg_context->u.bulk.buffer) {
++		pr_err("bulk.buffer not configured - error in buffer_from_host\n");
+ 
+ 		/* todo: this is a serious error, we should never have
+ 		 * committed a buffer_to_host operation to the mmal
+@@ -353,13 +349,6 @@ static int bulk_receive(struct vchiq_mma
+ 		return -EINVAL;
+ 	}
+ 
+-	msg_context->u.bulk.buffer =
+-	    list_entry(msg_context->u.bulk.port->buffers.next,
+-		       struct mmal_buffer, list);
+-	list_del(&msg_context->u.bulk.buffer->list);
+-
+-	spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags);
+-
+ 	/* ensure we do not overrun the available buffer */
+ 	if (rd_len > msg_context->u.bulk.buffer->buffer_size) {
+ 		rd_len = msg_context->u.bulk.buffer->buffer_size;
+@@ -422,31 +411,6 @@ static int inline_receive(struct vchiq_m
+ 			  struct mmal_msg *msg,
+ 			  struct mmal_msg_context *msg_context)
+ {
+-	unsigned long flags = 0;
+-
+-	/* take buffer from queue */
+-	spin_lock_irqsave(&msg_context->u.bulk.port->slock, flags);
+-	if (list_empty(&msg_context->u.bulk.port->buffers)) {
+-		spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags);
+-		pr_err("buffer list empty trying to receive inline\n");
+-
+-		/* todo: this is a serious error, we should never have
+-		 * committed a buffer_to_host operation to the mmal
+-		 * port without the buffer to back it up (with
+-		 * underflow handling) and there is no obvious way to
+-		 * deal with this. Less bad than the bulk case as we
+-		 * can just drop this on the floor but...unhelpful
+-		 */
+-		return -EINVAL;
+-	}
+-
+-	msg_context->u.bulk.buffer =
+-	    list_entry(msg_context->u.bulk.port->buffers.next,
+-		       struct mmal_buffer, list);
+-	list_del(&msg_context->u.bulk.buffer->list);
+-
+-	spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags);
+-
+ 	memcpy(msg_context->u.bulk.buffer->buffer,
+ 	       msg->u.buffer_from_host.short_data,
+ 	       msg->u.buffer_from_host.payload_in_message);
+@@ -466,6 +430,9 @@ buffer_from_host(struct vchiq_mmal_insta
+ 	struct mmal_msg m;
+ 	int ret;
+ 
++	if (!port->enabled)
++		return -EINVAL;
++
+ 	pr_debug("instance:%p buffer:%p\n", instance->handle, buf);
+ 
+ 	/* get context */
+@@ -479,7 +446,7 @@ buffer_from_host(struct vchiq_mmal_insta
+ 	/* store bulk message context for when data arrives */
+ 	msg_context->u.bulk.instance = instance;
+ 	msg_context->u.bulk.port = port;
+-	msg_context->u.bulk.buffer = NULL;	/* not valid until bulk xfer */
++	msg_context->u.bulk.buffer = buf;
+ 	msg_context->u.bulk.buffer_used = 0;
+ 
+ 	/* initialise work structure ready to schedule callback */
+@@ -529,43 +496,6 @@ buffer_from_host(struct vchiq_mmal_insta
+ 	return ret;
+ }
+ 
+-/* submit a buffer to the mmal sevice
+- *
+- * the buffer_from_host uses size data from the ports next available
+- * mmal_buffer and deals with there being no buffer available by
+- * incrementing the underflow for later
+- */
+-static int port_buffer_from_host(struct vchiq_mmal_instance *instance,
+-				 struct vchiq_mmal_port *port)
+-{
+-	int ret;
+-	struct mmal_buffer *buf;
+-	unsigned long flags = 0;
+-
+-	if (!port->enabled)
+-		return -EINVAL;
+-
+-	/* peek buffer from queue */
+-	spin_lock_irqsave(&port->slock, flags);
+-	if (list_empty(&port->buffers)) {
+-		spin_unlock_irqrestore(&port->slock, flags);
+-		return -ENOSPC;
+-	}
+-
+-	buf = list_entry(port->buffers.next, struct mmal_buffer, list);
+-
+-	spin_unlock_irqrestore(&port->slock, flags);
+-
+-	/* issue buffer to mmal service */
+-	ret = buffer_from_host(instance, port, buf);
+-	if (ret) {
+-		pr_err("adding buffer header failed\n");
+-		/* todo: how should this be dealt with */
+-	}
+-
+-	return ret;
+-}
+-
+ /* deals with receipt of buffer to host message */
+ static void buffer_to_host_cb(struct vchiq_mmal_instance *instance,
+ 			      struct mmal_msg *msg, u32 msg_len)
+@@ -1425,7 +1355,14 @@ static int port_disable(struct vchiq_mma
+ 	ret = port_action_port(instance, port,
+ 			       MMAL_MSG_PORT_ACTION_TYPE_DISABLE);
+ 	if (ret == 0) {
+-		/* drain all queued buffers on port */
++		/*
++		 * Drain all queued buffers on port. This should only
++		 * apply to buffers that have been queued before the port
++		 * has been enabled. If the port has been enabled and buffers
++		 * passed, then the buffers should have been removed from this
++		 * list, and we should get the relevant callbacks via VCHIQ
++		 * to release the buffers.
++		 */
+ 		spin_lock_irqsave(&port->slock, flags);
+ 
+ 		list_for_each_safe(buf_head, q, &port->buffers) {
+@@ -1454,7 +1391,7 @@ static int port_enable(struct vchiq_mmal
+ 		       struct vchiq_mmal_port *port)
+ {
+ 	unsigned int hdr_count;
+-	struct list_head *buf_head;
++	struct list_head *q, *buf_head;
+ 	int ret;
+ 
+ 	if (port->enabled)
+@@ -1480,7 +1417,7 @@ static int port_enable(struct vchiq_mmal
+ 	if (port->buffer_cb) {
+ 		/* send buffer headers to videocore */
+ 		hdr_count = 1;
+-		list_for_each(buf_head, &port->buffers) {
++		list_for_each_safe(buf_head, q, &port->buffers) {
+ 			struct mmal_buffer *mmalbuf;
+ 
+ 			mmalbuf = list_entry(buf_head, struct mmal_buffer,
+@@ -1489,6 +1426,7 @@ static int port_enable(struct vchiq_mmal
+ 			if (ret)
+ 				goto done;
+ 
++			list_del(buf_head);
+ 			hdr_count++;
+ 			if (hdr_count > port->current_buffer.num)
+ 				break;
+@@ -1701,12 +1639,15 @@ int vchiq_mmal_submit_buffer(struct vchi
+ 			     struct mmal_buffer *buffer)
+ {
+ 	unsigned long flags = 0;
++	int ret;
+ 
+-	spin_lock_irqsave(&port->slock, flags);
+-	list_add_tail(&buffer->list, &port->buffers);
+-	spin_unlock_irqrestore(&port->slock, flags);
+-
+-	port_buffer_from_host(instance, port);
++	ret = buffer_from_host(instance, port, buffer);
++	if (ret == -EINVAL) {
++		/* Port is disabled. Queue for when it is enabled. */
++		spin_lock_irqsave(&port->slock, flags);
++		list_add_tail(&buffer->list, &port->buffers);
++		spin_unlock_irqrestore(&port->slock, flags);
++	}
+ 
+ 	return 0;
+ }