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, 126 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0424-vchiq_2835_arm-Implement-a-DMA-pool-for-small-bulk-t.patch b/target/linux/brcm2708/patches-4.14/950-0424-vchiq_2835_arm-Implement-a-DMA-pool-for-small-bulk-t.patch
new file mode 100644
index 0000000000..0c93a14dc0
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0424-vchiq_2835_arm-Implement-a-DMA-pool-for-small-bulk-t.patch
@@ -0,0 +1,126 @@
+From 88acd92a7cbcb8a6ae299b88554abbc9bedbae0a Mon Sep 17 00:00:00 2001
+From: detule <ogjoneski@gmail.com>
+Date: Tue, 2 Oct 2018 04:10:08 -0400
+Subject: [PATCH 424/454] vchiq_2835_arm: Implement a DMA pool for small bulk
+ transfers (#2699)
+
+During a bulk transfer we request a DMA allocation to hold the
+scatter-gather list.  Most of the time, this allocation is small
+(<< PAGE_SIZE), however it can be requested at a high enough frequency
+to cause fragmentation and/or stress the CMA allocator (think time
+spent in compaction here, or during allocations elsewhere).
+
+Implement a pool to serve up small DMA allocations, falling back
+to a coherent allocation if the request is greater than
+VCHIQ_DMA_POOL_SIZE.
+
+Signed-off-by: Oliver Gjoneski <ogjoneski@gmail.com>
+---
+ .../interface/vchiq_arm/vchiq_2835_arm.c      | 40 +++++++++++++++----
+ 1 file changed, 33 insertions(+), 7 deletions(-)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+@@ -37,6 +37,7 @@
+ #include <linux/interrupt.h>
+ #include <linux/pagemap.h>
+ #include <linux/dma-mapping.h>
++#include <linux/dmapool.h>
+ #include <linux/io.h>
+ #include <linux/platform_device.h>
+ #include <linux/uaccess.h>
+@@ -59,6 +60,8 @@
+ #define BELL0	0x00
+ #define BELL2	0x08
+ 
++#define VCHIQ_DMA_POOL_SIZE PAGE_SIZE
++
+ typedef struct vchiq_2835_state_struct {
+ 	int inited;
+ 	VCHIQ_ARM_STATE_T arm_state;
+@@ -68,6 +71,7 @@ struct vchiq_pagelist_info {
+ 	PAGELIST_T *pagelist;
+ 	size_t pagelist_buffer_size;
+ 	dma_addr_t dma_addr;
++	bool is_from_pool;
+ 	enum dma_data_direction dma_dir;
+ 	unsigned int num_pages;
+ 	unsigned int pages_need_release;
+@@ -78,6 +82,7 @@ struct vchiq_pagelist_info {
+ 
+ static void __iomem *g_regs;
+ static unsigned int g_cache_line_size = sizeof(CACHE_LINE_SIZE);
++static struct dma_pool *g_dma_pool;
+ static unsigned int g_fragments_size;
+ static char *g_fragments_base;
+ static char *g_free_fragments;
+@@ -193,6 +198,14 @@ int vchiq_platform_init(struct platform_
+ 	}
+ 
+ 	g_dev = dev;
++	g_dma_pool = dmam_pool_create("vchiq_scatter_pool", dev,
++				      VCHIQ_DMA_POOL_SIZE, g_cache_line_size,
++				      0);
++	if (!g_dma_pool) {
++		dev_err(dev, "failed to create dma pool");
++		return -ENOMEM;
++	}
++
+ 	vchiq_log_info(vchiq_arm_log_level,
+ 		"vchiq_init - done (slots %pK, phys %pad)",
+ 		vchiq_slot_zero, &slot_phys);
+@@ -377,9 +390,14 @@ cleanup_pagelistinfo(struct vchiq_pageli
+ 		for (i = 0; i < pagelistinfo->num_pages; i++)
+ 			put_page(pagelistinfo->pages[i]);
+ 	}
+-
+-	dma_free_coherent(g_dev, pagelistinfo->pagelist_buffer_size,
+-			  pagelistinfo->pagelist, pagelistinfo->dma_addr);
++	if (pagelistinfo->is_from_pool) {
++		dma_pool_free(g_dma_pool, pagelistinfo->pagelist,
++			      pagelistinfo->dma_addr);
++	} else {
++		dma_free_coherent(g_dev, pagelistinfo->pagelist_buffer_size,
++				  pagelistinfo->pagelist,
++				  pagelistinfo->dma_addr);
++	}
+ }
+ 
+ /* There is a potential problem with partial cache lines (pages?)
+@@ -400,6 +418,7 @@ create_pagelist(char __user *buf, size_t
+ 	u32 *addrs;
+ 	unsigned int num_pages, offset, i, k;
+ 	int actual_pages;
++	bool is_from_pool;
+ 	size_t pagelist_size;
+ 	struct scatterlist *scatterlist, *sg;
+ 	int dma_buffers;
+@@ -417,10 +436,16 @@ create_pagelist(char __user *buf, size_t
+ 	/* Allocate enough storage to hold the page pointers and the page
+ 	** list
+ 	*/
+-	pagelist = dma_zalloc_coherent(g_dev,
+-				       pagelist_size,
+-				       &dma_addr,
+-				       GFP_KERNEL);
++	if (pagelist_size > VCHIQ_DMA_POOL_SIZE) {
++		pagelist = dma_zalloc_coherent(g_dev,
++					       pagelist_size,
++					       &dma_addr,
++					       GFP_KERNEL);
++		is_from_pool = false;
++	} else {
++		pagelist = dma_pool_zalloc(g_dma_pool, GFP_KERNEL, &dma_addr);
++		is_from_pool = true;
++	}
+ 
+ 	vchiq_log_trace(vchiq_arm_log_level, "create_pagelist - %pK",
+ 			pagelist);
+@@ -441,6 +466,7 @@ create_pagelist(char __user *buf, size_t
+ 	pagelistinfo->pagelist = pagelist;
+ 	pagelistinfo->pagelist_buffer_size = pagelist_size;
+ 	pagelistinfo->dma_addr = dma_addr;
++	pagelistinfo->is_from_pool = is_from_pool;
+ 	pagelistinfo->dma_dir =  (type == PAGELIST_WRITE) ?
+ 				  DMA_TO_DEVICE : DMA_FROM_DEVICE;
+ 	pagelistinfo->num_pages = num_pages;