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, 382 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0133-Tidy-up-of-the-ft5406-driver-to-use-DT-2189.patch b/target/linux/brcm2708/patches-4.14/950-0133-Tidy-up-of-the-ft5406-driver-to-use-DT-2189.patch
new file mode 100644
index 0000000000..18e8dd5ad5
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0133-Tidy-up-of-the-ft5406-driver-to-use-DT-2189.patch
@@ -0,0 +1,382 @@
+From f87b44ad810fbb74b50df0df051b468bd30f4900 Mon Sep 17 00:00:00 2001
+From: James Hughes <JamesH65@users.noreply.github.com>
+Date: Thu, 16 Nov 2017 15:56:17 +0000
+Subject: [PATCH 133/454] Tidy up of the ft5406 driver to use DT (#2189)
+
+Driver was using a fixed resolution, this commit
+adds touchscreen size, and coordinate flip and swap
+features via device tree overlays.
+
+Adds overrides so the VC4 can adjust the DT parameters
+appropriately; there is a newer version of the VC4 side
+driver that can now set up the appropriate DT values
+if required.
+
+Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
+---
+ drivers/input/touchscreen/rpi-ft5406.c | 218 ++++++++++++++++---------
+ 1 file changed, 145 insertions(+), 73 deletions(-)
+
+--- a/drivers/input/touchscreen/rpi-ft5406.c
++++ b/drivers/input/touchscreen/rpi-ft5406.c
+@@ -1,7 +1,7 @@
+ /*
+  * Driver for memory based ft5406 touchscreen
+  *
+- * Copyright (C) 2015 Raspberry Pi
++ * Copyright (C) 2015, 2017 Raspberry Pi
+  *
+  *
+  * This program is free software; you can redistribute it and/or modify
+@@ -9,7 +9,6 @@
+  * published by the Free Software Foundation.
+  */
+ 
+-
+ #include <linux/module.h>
+ #include <linux/interrupt.h>
+ #include <linux/input.h>
+@@ -21,11 +20,15 @@
+ #include <linux/kthread.h>
+ #include <linux/platform_device.h>
+ #include <linux/stddef.h>
+-#include <asm/io.h>
++#include <linux/io.h>
+ #include <linux/dma-mapping.h>
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ 
+ #define MAXIMUM_SUPPORTED_POINTS 10
++#define FTS_TOUCH_DOWN      0
++#define FTS_TOUCH_UP        1
++#define FTS_TOUCH_CONTACT   2
++
+ struct ft5406_regs {
+ 	uint8_t device_mode;
+ 	uint8_t gesture_id;
+@@ -35,85 +38,125 @@ struct ft5406_regs {
+ 		uint8_t xl;
+ 		uint8_t yh;
+ 		uint8_t yl;
+-		uint8_t res1;
+-		uint8_t res2;
++		uint8_t pressure; /* Not supported */
++		uint8_t area;     /* Not supported */
+ 	} point[MAXIMUM_SUPPORTED_POINTS];
+ };
+ 
+-#define SCREEN_WIDTH  800
+-#define SCREEN_HEIGHT 480
++/* These are defaults if the DT entries are missing */
++#define DEFAULT_SCREEN_WIDTH  800
++#define DEFAULT_SCREEN_HEIGHT 480
+ 
+ struct ft5406 {
+-	struct platform_device * pdev;
+-	struct input_dev       * input_dev;
+-	void __iomem           * ts_base;
+-	dma_addr_t		 bus_addr;
+-	struct task_struct     * thread;
++	struct platform_device	*pdev;
++	struct input_dev	*input_dev;
++	void __iomem		*ts_base;
++	dma_addr_t		bus_addr;
++	struct task_struct	*thread;
++
++	uint16_t	max_x;
++	uint16_t	max_y;
++	uint8_t		hflip;
++	uint8_t		vflip;
++	uint8_t		xyswap;
+ };
+ 
+ /* Thread to poll for touchscreen events
+- * 
++ *
+  * This thread polls the memory based register copy of the ft5406 registers
+  * using the number of points register to know whether the copy has been
+- * updated (we write 99 to the memory copy, the GPU will write between 
++ * updated (we write 99 to the memory copy, the GPU will write between
+  * 0 - 10 points)
+  */
++#define ID_TO_BIT(a) (1 << a)
++
+ static int ft5406_thread(void *arg)
+ {
+ 	struct ft5406 *ts = (struct ft5406 *) arg;
+ 	struct ft5406_regs regs;
+ 	int known_ids = 0;
+-	
+-	while(!kthread_should_stop())
+-	{
+-		// 60fps polling
++
++	while (!kthread_should_stop()) {
++		/* 60fps polling */
+ 		msleep_interruptible(17);
+ 		memcpy_fromio(&regs, ts->ts_base, sizeof(struct ft5406_regs));
+-		iowrite8(99, ts->ts_base + offsetof(struct ft5406_regs, num_points));
+-		// Do not output if theres no new information (num_points is 99)
+-		// or we have no touch points and don't need to release any
+-		if(!(regs.num_points == 99 || (regs.num_points == 0 && known_ids == 0)))
+-		{
++		iowrite8(99,
++			 ts->ts_base +
++			 offsetof(struct ft5406_regs, num_points));
++
++		/*
++		 * Do not output if theres no new information (num_points is 99)
++		 * or we have no touch points and don't need to release any
++		 */
++		if (!(regs.num_points == 99 ||
++		    (regs.num_points == 0 && known_ids == 0))) {
+ 			int i;
+ 			int modified_ids = 0, released_ids;
+-			for(i = 0; i < regs.num_points; i++)
+-			{
+-				int x = (((int) regs.point[i].xh & 0xf) << 8) + regs.point[i].xl;
+-				int y = (((int) regs.point[i].yh & 0xf) << 8) + regs.point[i].yl;
+-				int touchid = (regs.point[i].yh >> 4) & 0xf;
+-				
+-				modified_ids |= 1 << touchid;
+ 
+-				if(!((1 << touchid) & known_ids))
+-					dev_dbg(&ts->pdev->dev, "x = %d, y = %d, touchid = %d\n", x, y, touchid);
+-				
+-				input_mt_slot(ts->input_dev, touchid);
+-				input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, 1);
++			for (i = 0; i < regs.num_points; i++) {
++				int x = (((int) regs.point[i].xh & 0xf) << 8) +
++					regs.point[i].xl;
++				int y = (((int) regs.point[i].yh & 0xf) << 8) +
++					regs.point[i].yl;
++				int touchid = (regs.point[i].yh >> 4) & 0xf;
++				int event_type = (regs.point[i].xh >> 6) & 0x03;
+ 
+-				input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
+-				input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
++				modified_ids |= ID_TO_BIT(touchid);
+ 
++				if (event_type == FTS_TOUCH_DOWN ||
++				    event_type == FTS_TOUCH_CONTACT) {
++					if (ts->hflip)
++						x = ts->max_x - 1 - x;
++
++					if (ts->vflip)
++						y = ts->max_y - 1 - y;
++
++					if (ts->xyswap)
++						swap(x, y);
++
++					if (!((ID_TO_BIT(touchid)) & known_ids))
++						dev_dbg(&ts->pdev->dev,
++							"x = %d, y = %d, press = %d, touchid = %d\n",
++							x, y,
++							regs.point[i].pressure,
++							touchid);
++
++					input_mt_slot(ts->input_dev, touchid);
++					input_mt_report_slot_state(
++							ts->input_dev,
++							MT_TOOL_FINGER,
++							1);
++
++					input_report_abs(ts->input_dev,
++							 ABS_MT_POSITION_X, x);
++					input_report_abs(ts->input_dev,
++							 ABS_MT_POSITION_Y, y);
++				}
+ 			}
+ 
+ 			released_ids = known_ids & ~modified_ids;
+-			for(i = 0; released_ids && i < MAXIMUM_SUPPORTED_POINTS; i++)
+-			{
+-				if(released_ids & (1<<i))
+-				{
+-					dev_dbg(&ts->pdev->dev, "Released %d, known = %x modified = %x\n", i, known_ids, modified_ids);
++			for (i = 0;
++			     released_ids && i < MAXIMUM_SUPPORTED_POINTS;
++			     i++) {
++				if (released_ids & (1<<i)) {
++					dev_dbg(&ts->pdev->dev,
++						"Released %d, known = %x, modified = %x\n",
++						i, known_ids, modified_ids);
+ 					input_mt_slot(ts->input_dev, i);
+-					input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, 0);
+-					modified_ids &= ~(1 << i);
++					input_mt_report_slot_state(
++							ts->input_dev,
++							MT_TOOL_FINGER,
++							0);
++					modified_ids &= ~(ID_TO_BIT(i));
+ 				}
+ 			}
+ 			known_ids = modified_ids;
+-			
++
+ 			input_mt_report_pointer_emulation(ts->input_dev, true);
+ 			input_sync(ts->input_dev);
+ 		}
+-			
+ 	}
+-	
++
+ 	return 0;
+ }
+ 
+@@ -122,13 +165,14 @@ static int ft5406_probe(struct platform_
+ 	int err = 0;
+ 	struct device *dev = &pdev->dev;
+ 	struct device_node *np = dev->of_node;
+-	struct ft5406 * ts;
++	struct ft5406 *ts;
+ 	struct device_node *fw_node;
+ 	struct rpi_firmware *fw;
+ 	u32 touchbuf;
+-	
++	u32 val;
++
+ 	dev_info(dev, "Probing device\n");
+-	
++
+ 	fw_node = of_parse_phandle(np, "firmware", 0);
+ 	if (!fw_node) {
+ 		dev_err(dev, "Missing firmware node\n");
+@@ -151,7 +195,8 @@ static int ft5406_probe(struct platform_
+ 		return -ENOMEM;
+ 	}
+ 
+-	ts->ts_base = dma_zalloc_coherent(dev, PAGE_SIZE, &ts->bus_addr, GFP_KERNEL);
++	ts->ts_base = dma_zalloc_coherent(dev, PAGE_SIZE, &ts->bus_addr,
++					  GFP_KERNEL);
+ 	if (!ts->ts_base) {
+ 		pr_err("[%s]: failed to dma_alloc_coherent(%ld)\n",
+ 				__func__, PAGE_SIZE);
+@@ -164,17 +209,22 @@ static int ft5406_probe(struct platform_
+ 				    &touchbuf, sizeof(touchbuf));
+ 
+ 	if (err || touchbuf != 0) {
+-		dev_warn(dev, "Failed to set touchbuf, trying to get err:%x\n", err);
++		dev_warn(dev, "Failed to set touchbuf, trying to get err:%x\n",
++			 err);
+ 		dma_free_coherent(dev, PAGE_SIZE, ts->ts_base, ts->bus_addr);
+ 		ts->ts_base = 0;
+ 		ts->bus_addr = 0;
+ 	}
+ 
+ 	if (!ts->ts_base) {
+-		dev_warn(dev, "set failed, trying get (err:%d touchbuf:%x virt:%p bus:%x)\n", err, touchbuf, ts->ts_base, ts->bus_addr);
+-
+-		err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF,
+-				    &touchbuf, sizeof(touchbuf));
++		dev_warn(dev,
++		"set failed, trying get (err:%d touchbuf:%x virt:%p bus:%x)\n",
++		err, touchbuf, ts->ts_base, ts->bus_addr);
++
++		err = rpi_firmware_property(
++				fw,
++				RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF,
++				&touchbuf, sizeof(touchbuf));
+ 		if (err) {
+ 			dev_err(dev, "Failed to get touch buffer\n");
+ 			goto out;
+@@ -188,11 +238,10 @@ static int ft5406_probe(struct platform_
+ 
+ 		dev_dbg(dev, "Got TS buffer 0x%x\n", touchbuf);
+ 
+-		// mmap the physical memory
++		/* mmap the physical memory */
+ 		touchbuf &= ~0xc0000000;
+ 		ts->ts_base = ioremap(touchbuf, sizeof(struct ft5406_regs));
+-		if (ts->ts_base == NULL)
+-		{
++		if (ts->ts_base == NULL) {
+ 			dev_err(dev, "Failed to map physical address\n");
+ 			err = -ENOMEM;
+ 			goto out;
+@@ -200,22 +249,46 @@ static int ft5406_probe(struct platform_
+ 	}
+ 	platform_set_drvdata(pdev, ts);
+ 	ts->pdev = pdev;
+-	
++
+ 	ts->input_dev->name = "FT5406 memory based driver";
+-	
++
++	if (of_property_read_u32(np, "touchscreen-size-x", &val) >= 0)
++		ts->max_x = val;
++	else
++		ts->max_x = DEFAULT_SCREEN_WIDTH;
++
++	if (of_property_read_u32(np, "touchscreen-size-y", &val) >= 0)
++		ts->max_y = val;
++	else
++		ts->max_y = DEFAULT_SCREEN_HEIGHT;
++
++	if (of_property_read_u32(np, "touchscreen-inverted-x", &val) >= 0)
++		ts->hflip = val;
++
++	if (of_property_read_u32(np, "touchscreen-inverted-y", &val) >= 0)
++		ts->vflip = val;
++
++	if (of_property_read_u32(np, "touchscreen-swapped-x-y", &val) >= 0)
++		ts->xyswap = val;
++
++	dev_dbg(dev,
++		"Touchscreen parameters (%d,%d), hflip=%d, vflip=%d, xyswap=%d",
++		ts->max_x, ts->max_y, ts->hflip, ts->vflip, ts->xyswap);
++
+ 	__set_bit(EV_KEY, ts->input_dev->evbit);
+ 	__set_bit(EV_SYN, ts->input_dev->evbit);
+ 	__set_bit(EV_ABS, ts->input_dev->evbit);
+ 
+ 	input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0,
+-			     SCREEN_WIDTH, 0, 0);
++			     ts->xyswap ? ts->max_y : ts->max_x, 0, 0);
+ 	input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0,
+-			     SCREEN_HEIGHT, 0, 0);
++			     ts->xyswap ? ts->max_x : ts->max_y, 0, 0);
+ 
+-	input_mt_init_slots(ts->input_dev, MAXIMUM_SUPPORTED_POINTS, INPUT_MT_DIRECT);
++	input_mt_init_slots(ts->input_dev,
++			    MAXIMUM_SUPPORTED_POINTS, INPUT_MT_DIRECT);
+ 
+ 	input_set_drvdata(ts->input_dev, ts);
+-	
++
+ 	err = input_register_device(ts->input_dev);
+ 	if (err) {
+ 		dev_err(dev, "could not register input device, %d\n",
+@@ -223,10 +296,9 @@ static int ft5406_probe(struct platform_
+ 		goto out;
+ 	}
+ 
+-	// create thread to poll the touch events
++	/* create thread that polls the touch events */
+ 	ts->thread = kthread_run(ft5406_thread, ts, "ft5406");
+-	if(ts->thread == NULL)
+-	{
++	if (ts->thread == NULL) {
+ 		dev_err(dev, "Failed to create kernel thread");
+ 		err = -ENOMEM;
+ 		goto out;
+@@ -254,9 +326,9 @@ static int ft5406_remove(struct platform
+ {
+ 	struct device *dev = &pdev->dev;
+ 	struct ft5406 *ts = (struct ft5406 *) platform_get_drvdata(pdev);
+-	
++
+ 	dev_info(dev, "Removing rpi-ft5406\n");
+-	
++
+ 	kthread_stop(ts->thread);
+ 
+ 	if (ts->bus_addr)
+@@ -265,7 +337,7 @@ static int ft5406_remove(struct platform
+ 		iounmap(ts->ts_base);
+ 	if (ts->input_dev)
+ 		input_unregister_device(ts->input_dev);
+-	
++
+ 	return 0;
+ }
+