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, 63 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0345-drm-vc4-Check-if-plane-requires-background-fill.patch b/target/linux/brcm2708/patches-4.14/950-0345-drm-vc4-Check-if-plane-requires-background-fill.patch
new file mode 100644
index 0000000000..709af646b4
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0345-drm-vc4-Check-if-plane-requires-background-fill.patch
@@ -0,0 +1,63 @@
+From 7771310ee7e9b7291e549e36771de6176d57e24b Mon Sep 17 00:00:00 2001
+From: Stefan Schake <stschake@gmail.com>
+Date: Fri, 9 Mar 2018 01:53:35 +0100
+Subject: [PATCH 345/454] drm/vc4: Check if plane requires background fill
+
+commit 3d67b68a6a3c2deb689c29759a20150c668c286e upstream.
+
+Considering a single plane only, we have to enable background color
+when the plane has an alpha format and could be blending from the
+background or when it doesn't cover the entire screen.
+
+Changes from v1:
+ - Drop unrelated change
+ - Move needs_bg_fill to plane state
+
+Signed-off-by: Stefan Schake <stschake@gmail.com>
+Signed-off-by: Eric Anholt <eric@anholt.net>
+Reviewed-by: Eric Anholt <eric@anholt.net>
+Link: https://patchwork.freedesktop.org/patch/msgid/1520556817-97297-3-git-send-email-stschake@gmail.com
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 17 +++++++++++++++++
+ 1 file changed, 17 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -73,6 +73,12 @@ struct vc4_plane_state {
+ 
+ 	/* Our allocation in LBM for temporary storage during scaling. */
+ 	struct drm_mm_node lbm;
++
++	/* Set when the plane has per-pixel alpha content or does not cover
++	 * the entire screen. This is a hint to the CRTC that it might need
++	 * to enable background color fill.
++	 */
++	bool needs_bg_fill;
+ };
+ 
+ static inline struct vc4_plane_state *
+@@ -521,6 +527,7 @@ static int vc4_plane_mode_set(struct drm
+ 	u32 ctl0_offset = vc4_state->dlist_count;
+ 	const struct hvs_format *format = vc4_get_hvs_format(fb->format->format);
+ 	int num_planes = drm_format_num_planes(format->drm);
++	bool covers_screen;
+ 	u32 scl0, scl1, pitch0;
+ 	u32 lbm_size, tiling;
+ 	unsigned long irqflags;
+@@ -704,6 +711,16 @@ static int vc4_plane_mode_set(struct drm
+ 	vc4_state->dlist[ctl0_offset] |=
+ 		VC4_SET_FIELD(vc4_state->dlist_count, SCALER_CTL0_SIZE);
+ 
++	/* crtc_* are already clipped coordinates. */
++	covers_screen = vc4_state->crtc_x == 0 && vc4_state->crtc_y == 0 &&
++			vc4_state->crtc_w == state->crtc->mode.hdisplay &&
++			vc4_state->crtc_h == state->crtc->mode.vdisplay;
++	/* Background fill might be necessary when the plane has per-pixel
++	 * alpha content and blends from the background or does not cover
++	 * the entire screen.
++	 */
++	vc4_state->needs_bg_fill = format->has_alpha || !covers_screen;
++
+ 	return 0;
+ }
+