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, 208 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0295-net-phy-add-paged-phy-register-accessors.patch b/target/linux/brcm2708/patches-4.14/950-0295-net-phy-add-paged-phy-register-accessors.patch
new file mode 100644
index 0000000000..51866b4485
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0295-net-phy-add-paged-phy-register-accessors.patch
@@ -0,0 +1,208 @@
+From 8a74a77e9df9565c247da3df37657d6eabb314c6 Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Tue, 2 Jan 2018 10:58:43 +0000
+Subject: [PATCH 295/454] net: phy: add paged phy register accessors
+
+commit 78ffc4acceff48522b92d8fbf8f4a0ffe78838b2 upstream.
+
+Add a set of paged phy register accessors which are inherently safe in
+their design against other accesses interfering with the paged access.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/phy-core.c | 157 +++++++++++++++++++++++++++++++++++++
+ include/linux/phy.h        |  11 +++
+ 2 files changed, 168 insertions(+)
+
+--- a/drivers/net/phy/phy-core.c
++++ b/drivers/net/phy/phy-core.c
+@@ -305,3 +305,160 @@ int __phy_modify(struct phy_device *phyd
+ 	return ret;
+ }
+ EXPORT_SYMBOL_GPL(__phy_modify);
++
++static int __phy_read_page(struct phy_device *phydev)
++{
++	return phydev->drv->read_page(phydev);
++}
++
++static int __phy_write_page(struct phy_device *phydev, int page)
++{
++	return phydev->drv->write_page(phydev, page);
++}
++
++/**
++ * phy_save_page() - take the bus lock and save the current page
++ * @phydev: a pointer to a &struct phy_device
++ *
++ * Take the MDIO bus lock, and return the current page number. On error,
++ * returns a negative errno. phy_restore_page() must always be called
++ * after this, irrespective of success or failure of this call.
++ */
++int phy_save_page(struct phy_device *phydev)
++{
++	mutex_lock(&phydev->mdio.bus->mdio_lock);
++	return __phy_read_page(phydev);
++}
++EXPORT_SYMBOL_GPL(phy_save_page);
++
++/**
++ * phy_select_page() - take the bus lock, save the current page, and set a page
++ * @phydev: a pointer to a &struct phy_device
++ * @page: desired page
++ *
++ * Take the MDIO bus lock to protect against concurrent access, save the
++ * current PHY page, and set the current page.  On error, returns a
++ * negative errno, otherwise returns the previous page number.
++ * phy_restore_page() must always be called after this, irrespective
++ * of success or failure of this call.
++ */
++int phy_select_page(struct phy_device *phydev, int page)
++{
++	int ret, oldpage;
++
++	oldpage = ret = phy_save_page(phydev);
++	if (ret < 0)
++		return ret;
++
++	if (oldpage != page) {
++		ret = __phy_write_page(phydev, page);
++		if (ret < 0)
++			return ret;
++	}
++
++	return oldpage;
++}
++EXPORT_SYMBOL_GPL(phy_select_page);
++
++/**
++ * phy_restore_page() - restore the page register and release the bus lock
++ * @phydev: a pointer to a &struct phy_device
++ * @oldpage: the old page, return value from phy_save_page() or phy_select_page()
++ * @ret: operation's return code
++ *
++ * Release the MDIO bus lock, restoring @oldpage if it is a valid page.
++ * This function propagates the earliest error code from the group of
++ * operations.
++ *
++ * Returns:
++ *   @oldpage if it was a negative value, otherwise
++ *   @ret if it was a negative errno value, otherwise
++ *   phy_write_page()'s negative value if it were in error, otherwise
++ *   @ret.
++ */
++int phy_restore_page(struct phy_device *phydev, int oldpage, int ret)
++{
++	int r;
++
++	if (oldpage >= 0) {
++		r = __phy_write_page(phydev, oldpage);
++
++		/* Propagate the operation return code if the page write
++		 * was successful.
++		 */
++		if (ret >= 0 && r < 0)
++			ret = r;
++	} else {
++		/* Propagate the phy page selection error code */
++		ret = oldpage;
++	}
++
++	mutex_unlock(&phydev->mdio.bus->mdio_lock);
++
++	return ret;
++}
++EXPORT_SYMBOL_GPL(phy_restore_page);
++
++/**
++ * phy_read_paged() - Convenience function for reading a paged register
++ * @phydev: a pointer to a &struct phy_device
++ * @page: the page for the phy
++ * @regnum: register number
++ *
++ * Same rules as for phy_read().
++ */
++int phy_read_paged(struct phy_device *phydev, int page, u32 regnum)
++{
++	int ret = 0, oldpage;
++
++	oldpage = phy_select_page(phydev, page);
++	if (oldpage >= 0)
++		ret = __phy_read(phydev, regnum);
++
++	return phy_restore_page(phydev, oldpage, ret);
++}
++EXPORT_SYMBOL(phy_read_paged);
++
++/**
++ * phy_write_paged() - Convenience function for writing a paged register
++ * @phydev: a pointer to a &struct phy_device
++ * @page: the page for the phy
++ * @regnum: register number
++ * @val: value to write
++ *
++ * Same rules as for phy_write().
++ */
++int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val)
++{
++	int ret = 0, oldpage;
++
++	oldpage = phy_select_page(phydev, page);
++	if (oldpage >= 0)
++		ret = __phy_write(phydev, regnum, val);
++
++	return phy_restore_page(phydev, oldpage, ret);
++}
++EXPORT_SYMBOL(phy_write_paged);
++
++/**
++ * phy_modify_paged() - Convenience function for modifying a paged register
++ * @phydev: a pointer to a &struct phy_device
++ * @page: the page for the phy
++ * @regnum: register number
++ * @mask: bit mask of bits to clear
++ * @set: bit mask of bits to set
++ *
++ * Same rules as for phy_read() and phy_write().
++ */
++int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum,
++		     u16 mask, u16 set)
++{
++	int ret = 0, oldpage;
++
++	oldpage = phy_select_page(phydev, page);
++	if (oldpage >= 0)
++		ret = __phy_modify(phydev, regnum, mask, set);
++
++	return phy_restore_page(phydev, oldpage, ret);
++}
++EXPORT_SYMBOL(phy_modify_paged);
+--- a/include/linux/phy.h
++++ b/include/linux/phy.h
+@@ -644,6 +644,9 @@ struct phy_driver {
+ 	int (*write_mmd)(struct phy_device *dev, int devnum, u16 regnum,
+ 			 u16 val);
+ 
++	int (*read_page)(struct phy_device *dev);
++	int (*write_page)(struct phy_device *dev, int page);
++
+ 	/* Get the size and type of the eeprom contained within a plug-in
+ 	 * module */
+ 	int (*module_info)(struct phy_device *dev,
+@@ -832,6 +835,14 @@ static inline bool phy_is_pseudo_fixed_l
+  */
+ int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
+ 
++int phy_save_page(struct phy_device *phydev);
++int phy_select_page(struct phy_device *phydev, int page);
++int phy_restore_page(struct phy_device *phydev, int oldpage, int ret);
++int phy_read_paged(struct phy_device *phydev, int page, u32 regnum);
++int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val);
++int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum,
++		     u16 mask, u16 set);
++
+ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
+ 				     bool is_c45,
+ 				     struct phy_c45_device_ids *c45_ids);