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, 189 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0033-i2c-bcm2835-Add-debug-support.patch b/target/linux/brcm2708/patches-4.14/950-0033-i2c-bcm2835-Add-debug-support.patch
new file mode 100644
index 0000000000..f740fb5871
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0033-i2c-bcm2835-Add-debug-support.patch
@@ -0,0 +1,189 @@
+From 390de19e8520898d19726ffa3d9a420349342442 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Tue, 1 Nov 2016 15:15:41 +0100
+Subject: [PATCH 033/454] i2c: bcm2835: Add debug support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This adds a debug module parameter to aid in debugging transfer issues
+by printing info to the kernel log. When enabled, status values are
+collected in the interrupt routine and msg info in
+bcm2835_i2c_start_transfer(). This is done in a way that tries to avoid
+affecting timing. Having printk in the isr can mask issues.
+
+debug values (additive):
+1: Print info on error
+2: Print info on all transfers
+3: Print messages before transfer is started
+
+The value can be changed at runtime:
+/sys/module/i2c_bcm2835/parameters/debug
+
+Example output, debug=3:
+[  747.114448] bcm2835_i2c_xfer: msg(1/2) write addr=0x54, len=2 flags= [i2c1]
+[  747.114463] bcm2835_i2c_xfer: msg(2/2) read addr=0x54, len=32 flags= [i2c1]
+[  747.117809] start_transfer: msg(1/2) write addr=0x54, len=2 flags= [i2c1]
+[  747.117825] isr: remain=2, status=0x30000055 : TA TXW TXD TXE  [i2c1]
+[  747.117839] start_transfer: msg(2/2) read addr=0x54, len=32 flags= [i2c1]
+[  747.117849] isr: remain=32, status=0xd0000039 : TA RXR TXD RXD  [i2c1]
+[  747.117861] isr: remain=20, status=0xd0000039 : TA RXR TXD RXD  [i2c1]
+[  747.117870] isr: remain=8, status=0x32 : DONE TXD RXD  [i2c1]
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ drivers/i2c/busses/i2c-bcm2835.c | 99 +++++++++++++++++++++++++++++++-
+ 1 file changed, 98 insertions(+), 1 deletion(-)
+
+--- a/drivers/i2c/busses/i2c-bcm2835.c
++++ b/drivers/i2c/busses/i2c-bcm2835.c
+@@ -56,6 +56,18 @@
+ #define BCM2835_I2C_CDIV_MIN	0x0002
+ #define BCM2835_I2C_CDIV_MAX	0xFFFE
+ 
++static unsigned int debug;
++module_param(debug, uint, 0644);
++MODULE_PARM_DESC(debug, "1=err, 2=isr, 3=xfer");
++
++#define BCM2835_DEBUG_MAX	512
++struct bcm2835_debug {
++	struct i2c_msg *msg;
++	int msg_idx;
++	size_t remain;
++	u32 status;
++};
++
+ struct bcm2835_i2c_dev {
+ 	struct device *dev;
+ 	void __iomem *regs;
+@@ -69,8 +81,78 @@ struct bcm2835_i2c_dev {
+ 	u32 msg_err;
+ 	u8 *msg_buf;
+ 	size_t msg_buf_remaining;
++	struct bcm2835_debug debug[BCM2835_DEBUG_MAX];
++	unsigned int debug_num;
++	unsigned int debug_num_msgs;
+ };
+ 
++static inline void bcm2835_debug_add(struct bcm2835_i2c_dev *i2c_dev, u32 s)
++{
++	if (!i2c_dev->debug_num_msgs || i2c_dev->debug_num >= BCM2835_DEBUG_MAX)
++		return;
++
++	i2c_dev->debug[i2c_dev->debug_num].msg = i2c_dev->curr_msg;
++	i2c_dev->debug[i2c_dev->debug_num].msg_idx =
++				i2c_dev->debug_num_msgs - i2c_dev->num_msgs;
++	i2c_dev->debug[i2c_dev->debug_num].remain = i2c_dev->msg_buf_remaining;
++	i2c_dev->debug[i2c_dev->debug_num].status = s;
++	i2c_dev->debug_num++;
++}
++
++static void bcm2835_debug_print_status(struct bcm2835_i2c_dev *i2c_dev,
++				       struct bcm2835_debug *d)
++{
++	u32 s = d->status;
++
++	pr_info("isr: remain=%zu, status=0x%x : %s%s%s%s%s%s%s%s%s%s [i2c%d]\n",
++		d->remain, s,
++		s & BCM2835_I2C_S_TA ? "TA " : "",
++		s & BCM2835_I2C_S_DONE ? "DONE " : "",
++		s & BCM2835_I2C_S_TXW ? "TXW " : "",
++		s & BCM2835_I2C_S_RXR ? "RXR " : "",
++		s & BCM2835_I2C_S_TXD ? "TXD " : "",
++		s & BCM2835_I2C_S_RXD ? "RXD " : "",
++		s & BCM2835_I2C_S_TXE ? "TXE " : "",
++		s & BCM2835_I2C_S_RXF ? "RXF " : "",
++		s & BCM2835_I2C_S_ERR ? "ERR " : "",
++		s & BCM2835_I2C_S_CLKT ? "CLKT " : "",
++		i2c_dev->adapter.nr);
++}
++
++static void bcm2835_debug_print_msg(struct bcm2835_i2c_dev *i2c_dev,
++				    struct i2c_msg *msg, int i, int total,
++				    const char *fname)
++{
++	pr_info("%s: msg(%d/%d) %s addr=0x%02x, len=%u flags=%s%s%s%s%s%s%s [i2c%d]\n",
++		fname, i, total,
++		msg->flags & I2C_M_RD ? "read" : "write", msg->addr, msg->len,
++		msg->flags & I2C_M_TEN ? "TEN" : "",
++		msg->flags & I2C_M_RECV_LEN ? "RECV_LEN" : "",
++		msg->flags & I2C_M_NO_RD_ACK ? "NO_RD_ACK" : "",
++		msg->flags & I2C_M_IGNORE_NAK ? "IGNORE_NAK" : "",
++		msg->flags & I2C_M_REV_DIR_ADDR ? "REV_DIR_ADDR" : "",
++		msg->flags & I2C_M_NOSTART ? "NOSTART" : "",
++		msg->flags & I2C_M_STOP ? "STOP" : "",
++		i2c_dev->adapter.nr);
++}
++
++static void bcm2835_debug_print(struct bcm2835_i2c_dev *i2c_dev)
++{
++	struct bcm2835_debug *d;
++	unsigned int i;
++
++	for (i = 0; i < i2c_dev->debug_num; i++) {
++		d = &i2c_dev->debug[i];
++		if (d->status == ~0)
++			bcm2835_debug_print_msg(i2c_dev, d->msg, d->msg_idx,
++				i2c_dev->debug_num_msgs, "start_transfer");
++		else
++			bcm2835_debug_print_status(i2c_dev, d);
++	}
++	if (i2c_dev->debug_num >= BCM2835_DEBUG_MAX)
++		pr_info("BCM2835_DEBUG_MAX reached\n");
++}
++
+ static inline void bcm2835_i2c_writel(struct bcm2835_i2c_dev *i2c_dev,
+ 				      u32 reg, u32 val)
+ {
+@@ -189,6 +271,7 @@ static void bcm2835_i2c_start_transfer(s
+ 	bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_A, msg->addr);
+ 	bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_DLEN, msg->len);
+ 	bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_C, c);
++	bcm2835_debug_add(i2c_dev, ~0);
+ }
+ 
+ /*
+@@ -206,6 +289,7 @@ static irqreturn_t bcm2835_i2c_isr(int t
+ 	u32 val, err;
+ 
+ 	val = bcm2835_i2c_readl(i2c_dev, BCM2835_I2C_S);
++	bcm2835_debug_add(i2c_dev, val);
+ 
+ 	err = val & (BCM2835_I2C_S_CLKT | BCM2835_I2C_S_ERR);
+ 	if (err) {
+@@ -272,6 +356,13 @@ static int bcm2835_i2c_xfer(struct i2c_a
+ 	unsigned long time_left;
+ 	int i, ret;
+ 
++	if (debug)
++		i2c_dev->debug_num_msgs = num;
++
++	if (debug > 2)
++		for (i = 0; i < num; i++)
++			bcm2835_debug_print_msg(i2c_dev, &msgs[i], i + 1, num, __func__);
++
+ 	for (i = 0; i < (num - 1); i++)
+ 		if (msgs[i].flags & I2C_M_RD) {
+ 			dev_warn_once(i2c_dev->dev,
+@@ -291,6 +382,10 @@ static int bcm2835_i2c_xfer(struct i2c_a
+ 
+ 	time_left = wait_for_completion_timeout(&i2c_dev->completion,
+ 						adap->timeout);
++	if (debug > 1 || (debug && (!time_left || i2c_dev->msg_err)))
++		bcm2835_debug_print(i2c_dev);
++	i2c_dev->debug_num_msgs = 0;
++	i2c_dev->debug_num = 0;
+ 	if (!time_left) {
+ 		bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_C,
+ 				   BCM2835_I2C_C_CLEAR);
+@@ -301,7 +396,9 @@ static int bcm2835_i2c_xfer(struct i2c_a
+ 	if (!i2c_dev->msg_err)
+ 		return num;
+ 
+-	dev_dbg(i2c_dev->dev, "i2c transfer failed: %x\n", i2c_dev->msg_err);
++	if (debug)
++		dev_err(i2c_dev->dev, "i2c transfer failed: %x\n",
++			i2c_dev->msg_err);
+ 
+ 	if (i2c_dev->msg_err & BCM2835_I2C_S_ERR)
+ 		return -EREMOTEIO;