Commit Graph

2188 Commits

Author SHA1 Message Date
Maxim Anisimov
8956eb502d ramips: add support for TP-Link TL-WR842N v5
TP-Link TL-WR842N v5 are simple N300 router with 5-port FE switch and
non-detachable antennas. Its very similar to TP-Link TL-MR3420 V5.

Specification:

- MT7628N/N (580 MHz)
- 64 MB of RAM (DDR2)
- 8 MB of FLASH
- 2T2R 2.4 GHz
- 5x 10/100 Mbps Ethernet
- 2x external, non-detachable antennas
- USB 2.0 Port
- UART (J1) header on PCB (115200 8n1)
- 7x LED, 2x button, power input switch

Flash instruction:

The only way to flash OpenWrt image in wr842nv5 is to use
tftp recovery mode in U-Boot:

1. Configure PC with static IP 192.168.0.225/24 and tftp server.
2. Rename "lede-ramips-mt7628-tplink_tl-wr842n-v5-squashfs-tftp-recovery.bin"
   to "tp_recovery.bin" and place it in tftp server directory.
3. Connect PC with one of LAN ports, press the reset button, power up
   the router and keep button pressed for around 6-7 seconds, until
   device starts downloading the file.
4. Router will download file from server, write it to flash and reboot.

Signed-off-by: Maxim Anisimov <maxim.anisimov.ua@gmail.com>
2018-06-16 10:08:51 +02:00
David Bauer
82fa7b9d78 ramips: use phytpt trigger for mt76 wireless
With this change, the LED trigger is independent from the (wireless)
netdev name. The (wireless) netdev name can be easiliy changed in
OpenWrt and would require an update of the netdev trigger settings each
time it is done.

This change is (for now) applied only to MT7628 devices from TP-Link, as
we only had the possibility to test this change against two of those
devices, namely a TL-WR841 v13 and a Archer C50 v3.

Signed-off-by: David Bauer <mail@david-bauer.net>
2018-06-16 10:08:51 +02:00
lbzhung
291e34edff ramips: fix mt7688 watchdog register base addr
I found mt7688 watchdog not working. The watchdog registers are identical
for mt7621 and mt7628/mt7688. The first watchdog related register is at
0x10000100, the last one - a 16bit sized - at 0x10000128.

Set the correct register address and size in the dtsi file to get the
watchdog working.

Signed-off-by: lbzhung <gewalalb@gmail.com>
[add commit message]
Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-06-16 10:08:51 +02:00
Mathias Kresin
5da2c68d00 ramips: mt7621: fix mtu setting with kernel 4.14
Since kernel 4.10 commit 61e84623ace3 ("net: centralize net_device
min/max MTU checking"), the range of mtu is [min_mtu, max_mtu], which
is [68, 1500] by default.

It's necessary to set a max_mtu if a mtu > 1500 is supported.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-06-16 10:08:51 +02:00
Felix Fietkau
ec502cd3fe ramips: rename ethernet driver folder to the same one that upstream uses
Preparation for sharing offload code with the mediatek target through
generic files/

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-06-13 12:54:25 +02:00
Matthias Badaire
6ea0807f18 ramips: fix network config for ravpower wd03
This device has only one ethernet port.

Signed-off-by: Matthias Badaire <mbadaire@gmail.com>
[add the existing eth0 as lan block, shorten commit message]
Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-06-09 13:45:29 +02:00
INAGAKI Hiroshi
a32c06f44d ramips: add support for I-O DATA WN-GX300GR
I-O DATA WN-GX300GR is a 2.4 GHz band 11n router, based on MediaTek
MT7621S.

Specification:

- MT7621S (1-Core, 2-Threads)
- 64 MB of RAM
- 8 MB of Flash (SPI)
- 2T2R 2.4 GHz
- 5x 10/100/1000 Mbps Ethernet
- 2x LEDs, 4x keys (2x buttons, 1x slide switch)
- UART header on PCB
  - Vcc, GND, TX, RX from ethernet port side
  - baudrate: 115200 bps (U-Boot, OpenWrt)

Flash instruction using initramfs image:

1. Connect serial cable to UART header
2. Rename OpenWrt initramfs image for WN-GX300GR to "uImageWN-GX300GR"
and place it in the TFTP directory
3. Set the IP address of the computer to 192.168.99.8, connect to the
LAN port of WN-GX300GR, and start the TFTP server on the computer
4. Connect power cable to WN-GX300GR and turn on the router
5. Press "1" key on the serial console to interrupt boot process on
U-Boot, press Enter key 3 times and start firmware download via TFTP
6. WN-GX300GR downloads initramfs image and boot with it
7. On the initramfs image, execute "mtd erase firmware" to erase stock
firmware and execute sysupgrade with sysupgrade image for WN-GX300GR
8. Wait ~150 seconds to complete flasing

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
2018-06-08 09:56:27 +02:00
Rosen Penev
289b2f5e85 ramips: mt7621: Fix some cosmetic DTC warnings
Node /cpus/cpu@0 has a unit name, but no reg property
Node /cpus/cpu@1 has a unit name, but no reg property
Node /cpuintc@0 has a unit name, but no reg property
Node /cpuclock@0 has a unit name, but no reg property
Node /sysclock@0 has a unit name, but no reg property
Node /pcie@1e140000/pcie0 missing ranges for PCI bridge (or not a bridge)
Node /pcie@1e140000/pcie0 missing bus-range for PCI bridge
Node /pcie@1e140000/pcie1 missing ranges for PCI bridge (or not a bridge)
Node /pcie@1e140000/pcie1 missing bus-range for PCI bridge
Node /pcie@1e140000/pcie2 missing ranges for PCI bridge (or not a bridge)
Node /pcie@1e140000/pcie2 missing bus-range for PCI bridge

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-06-08 09:31:37 +02:00
Rosen Penev
66cc6dd6c4 ramips: mmc: Add back some non-mt7621 code that staging removed
This reverts commit 8a570921b5.

This seems to have been accidentally reverted. This fixes mt7620 and
mt7628.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Acked-by: Daniel Golle <daniel@makrotopia.org>
2018-06-08 09:31:36 +02:00
Kevin Darbyshire-Bryant
8110bf18f4 ramips: mir3g dts define usb port Vcc volt regulator GPIO
Define USB port power on/off GPO as voltage regulator type instead of
exposing as a normal GPIO.

The GPO is now controlled by the USB driver via the voltage regulator
definition.  The regulator is of fixed output type (5V for USB) hence the
GPO switches power on/off to USB pin 1 (Vcc)

USB port power is enabled on driver load and disabled on driver unload.

Enable kernel support for fixed voltage regulator types on mt7621.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
2018-06-08 09:31:36 +02:00
Daniel Golle
8796680277 ramips: fix reboot with W25Q256 with 4-address-mode enabled
Some board vendors actually changed the loader to expect the chip
to come up in 4-address-mode and flipped the ADP bit in the flash
chip's configuration register which makes it come up in 4-address-mode.
Hence it doesn't make sense to avoid switching to 4-address-mode on
those boards but the opposite as otherwise reboot hangs eg. on the
WrtNode2 boards. Fix this by checking the ADP register and only using
SPI_NOR_4B_READ_OP on chips which have ADP==0 (come up in 3-byte mode).

See also datasheet section 7.1.11 Power Up Address Mode (ADP)

Fixes: 22d982ea0 ("ramips: add support for switching between 3-byte and 4-byte addressing on w25q256 flash")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2018-06-07 02:34:13 +02:00
John Crispin
7197744cd6 Revert "ramips: Move PCI driver to files directory"
This reverts commit a098a78a33.

Signed-off-by: John Crispin <john@phrozen.org>
2018-06-01 11:42:20 +02:00
John Crispin
69929dac89 Revert "ramips: Remove redundant owner assignment"
This reverts commit 2ad4daf579.

Signed-off-by: John Crispin <john@phrozen.org>
2018-06-01 11:42:14 +02:00
John Crispin
64878a5616 Revert "ramips: improve interrupt mapping"
This reverts commit 5f7396ebef.

Signed-off-by: John Crispin <john@phrozen.org>
2018-06-01 11:42:11 +02:00
John Crispin
7577f32c8a Revert "ramips: remove conditional compilation."
This reverts commit 1f78625714.

Signed-off-by: John Crispin <john@phrozen.org>
2018-06-01 11:42:09 +02:00
John Crispin
b8569427eb Revert "ramips: remove unnecessary resource details."
This reverts commit edea934799.

Signed-off-by: John Crispin <john@phrozen.org>
2018-06-01 11:42:07 +02:00
John Crispin
784943e3f2 Revert "ramips: pci: sync with staging driver"
This reverts commit e07baec9fa.

Signed-off-by: John Crispin <john@phrozen.org>
2018-06-01 11:42:05 +02:00
John Crispin
8a570921b5 Revert "ramips: Add back some non-mt7621 code that staging removed"
This reverts commit 048e41f649.

Signed-off-by: John Crispin <john@phrozen.org>
2018-06-01 11:42:03 +02:00
John Crispin
1d3c286381 Revert "ramips: Fix WiFi after 5f7396ebef09b224edf08b0bda113613a42f0928"
This reverts commit 02f815d190.

Signed-off-by: John Crispin <john@phrozen.org>
2018-06-01 11:41:51 +02:00
Rosen Penev
9685f39787 ramips: Use generic board detect for GnuBee devices
This is a port of an old commit from mkresin's tree:

09260cdf3e9332978c2a474a58e93a6f2b55f4a8

This has the potential to break sysupgrade but it should be fine as
there is no stable release of LEDE or OpenWrt that support these devices.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-05-30 06:36:02 +02:00
Rosen Penev
976c27f2dd ramips: Fix a few other GnuBee DTS differences
I was carrying a local commit that added the sdhci stuff and missed it
as a result.

Also fix the rgmii3 thing in the PC2 DTS file as that's bogus and causes
a dmesg warning that it's bogus.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-05-30 06:35:24 +02:00
Rosen Penev
02f815d190 ramips: Fix WiFi after 5f7396ebef
That commit exposed a bug in the DTS files used by mt7621 where the wrong
reg value for pcie1 (and potentially pcie2) was being used. This was
causing WiFi failures for interfaces in pcie1.

eg. 2.4GHz working but not 5GHz.

As all of these dts entries are already specified in mt7621.dtsi, remove
them.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-05-30 06:33:56 +02:00
Stijn Tintel
64b53247c4 kernel: bump 4.14 to 4.14.44
Refresh patches.

Remove upstreamed patch:
generic/pending/181-net-usb-add-lte-modem-wistron-neweb-d18q1.patch
Update patches that no longer applies:
generic/hack/901-debloat_sock_diag.patch

Compile-tested on: x86/64.
Runtime-tested on: x86/64.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2018-05-29 00:53:15 +03:00
Rosen Penev
8c818fa1f0 ramips: Fix up GnuBee PC1 DTS file a little
There's nothing connected to i2c on this board, so remove it.

Also edited the gpio group to match the PC2 as they're the same.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-05-24 08:57:33 +02:00
Rosen Penev
048e41f649 ramips: Add back some non-mt7621 code that staging removed
Staging is meant only for mt7621 but for OpenWrt more is needed.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-05-24 08:57:17 +02:00
Matthias Badaire
52809db544 ramips: fix to mt7620a and add support for i2c on WD03
There was an error on initial commit, the proper soc is mt7620n (which is
more limited than mt7620a). Moreover, there is a battery management
controller connected to the i2c port of the mt7620n. I have a small piece
of i2c code to get battery level coming.

Signed-off-by: Matthias Badaire <mbadaire@gmail.com>
2018-05-22 21:02:01 +02:00
Koen Vandeputte
faf0a460c4 kernel: bump 4.14 to 4.14.42
Refreshed all patches

Compile-tested on: cns3xxx, imx6, x86_64
Runtime-tested on: cns3xxx, imx6, x86_64

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-05-22 20:49:08 +02:00
David Bauer
ce91c85e01 ramips: change wifi led trigger for Archer C50v3
This commit alters the TP-Link Archer C50v3 LED settings to use the phy
trigger instead of the netdev one. This way the WiFi status is displayed
even if the wifi interface name is altered.

Signed-off-by: David Bauer <mail@david-bauer.net>
2018-05-22 20:34:14 +02:00
David Bauer
35d00d9a41 ramips: fix Archer C50v3 LED mapping
This commit fixes the wrong LED mapping of the Archer C50 v3.
Commit was tested with an EU device.

Signed-off-by: David Bauer <mail@david-bauer.net>
2018-05-22 20:34:14 +02:00
Sergey Ryazanov
67a3cdcbb0 kernel: enable THIN_ARCHIVES by default
THIN_ARCHIVES option is enabled by default in the kernel configuration
and no one target config disables it. So enable it by default and remove
this symbol from target specific configs to keep them light.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
2018-05-22 07:55:20 +02:00
Sergey Ryazanov
bdc2b58c4b kernel: enable FUTEX_PI by default
New FUTEX_PI configuration symbol enabled if FUTEX and RT_MUTEX symbols
are enabled. Both of these symbols are enabled by default in the
generic config, so enable FUTEX_PI by default too to keep platform
specific configs minimal.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
2018-05-22 07:55:12 +02:00
Sergey Ryazanov
a08b0d0c31 kernel: enable EXPORTFS by default
OVERLAY_FS config symbol selects EXPORTFS since 4.12 kernel, we have
OVERLAY_FS enabled by default, so enable EXPORTFS in the generic config
of 4.14 and remove this option from platform specific configs.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
2018-05-22 07:55:05 +02:00
Sergey Ryazanov
978543a246 kernel: disable DRM_LIB_RANDOM by default
DRM_LIB_RANDOM config symbol selected only by DRM_DEBUG_MM_SELFTEST
which is disable by default, so disable DRM_LIB_RANDOM by default too.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
2018-05-22 07:54:57 +02:00
Sergey Ryazanov
ead26e9db6 kernel: disable DMA_{NOOP|VIRT}_OPS by default
These options do not used by any supported arch, so disable them by
default to make arch configs a bit more clean.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
2018-05-22 07:54:49 +02:00
Sergey Ryazanov
f928c338ad kernel: disable ARCH_WANTS_THP_SWAP by default
Only one arch (x86_64) enables this option. So disable
ARCH_WANTS_THP_SWAP by default and remove referencies to it from all
configs (except x86_64) to make them clean.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
2018-05-22 07:54:42 +02:00
YuheiOKAWA
d91953cb53 ramips: add support for YUKAI Engineering Inc. BOCCO
BOCCO is a communication robot provided by YUKAI Engineering Inc.

SoC: MT7620A
MEM: 256MB
Flash: 8MB
NAND: 512MB (non support)
Include Sound DAC and AMP.
No Wired Ethernet.

Signed-off-by: YuheiOKAWA <tochiro.srchack@gmail.com>
2018-05-18 11:19:00 +02:00
Koen Vandeputte
e2aa0c3f8b kernel: bump 4.14 to 4.14.41
Refreshed all patches

Dropped upstreamed patches:
522-PCI-aardvark-fix-logic-in-PCI-configuration-read-write-functions.patch
523-PCI-aardvark-set-PIO_ADDR_LS-correctly-in-advk_pcie_rd_conf.patch
525-PCI-aardvark-use-isr1-instead-of-isr0-interrupt-in-legacy-irq-mode.patch
527-PCI-aardvark-fix-PCIe-max-read-request-size-setting.patch

updated patches:
524-PCI-aardvark-set-host-and-device-to-the-same-MAX-payload-size.patch
030-USB-serial-option-fix-dwm-158-3g-modem-interface.patch

Added new ARM64 symbol: CONFIG_ARM64_ERRATUM_1024718

Compile-tested on: cns3xxx, imx6, mvebu (arm64), x86_64
Runtime-tested on: cns3xxx, imx6, x86_64

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-05-18 09:10:46 +02:00
Rosen Penev
fec205f654 ramips: mmc: Sync with staging driver
Mostly whitespace cleanups. Some unneeded code was removed.

MMC init was also moved to the probe function as in
6069bdd

The cleanup commits are over 100, making it hard to do them individually.

Tested on GnuBee PC1 with an SD card being used as swap.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
v2: Fixed compile issue with mt7620
2018-05-18 08:49:52 +02:00
Mathias Kresin
0e9e8d8323 kernel: dwc2: add support for host mode external vbus supply
Backport patch adding support for the vbus-supply devicetree property,
which allows to specific GPIOs (via fixed regulators) to enable
vbus/usb power.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-05-17 07:40:19 +02:00
John Crispin
7e15e21766 Revert "ramips: mmc: Sync with staging drivers"
This reverts commit 2d401925b9.

Signed-off-by: John Crispin <john@phrozen.org>
2018-05-15 12:42:40 +02:00
Wei Yongjun
87c254c87e staging: mt7621-eth: fix return value check in mt7621_gsw_probe()
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: f079b6406348 ("staging: mt7621-eth: add gigabit switch driver (GSW)")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-15 06:46:08 +02:00
Wei Yongjun
edec251870 staging: mt7621-eth: fix return value check in mtk_connect_phy_node()
In case of error, the function of_phy_connect() returns NULL pointer not
ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.

Fixes: e3cbf478f846 ("staging: mt7621-eth: add the drivers core files")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-15 06:45:53 +02:00
Wei Yongjun
c4ae54dfab staging: mt7621-eth: fix return value check in mtk_probe()
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: e3cbf478f846 ("staging: mt7621-eth: add the drivers core files")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-15 06:45:34 +02:00
Rosen Penev
e07baec9fa ramips: pci: sync with staging driver
This is an amagalmation of two upstream commits dealing with whitespace
and dead code removal. I'm synching instead of having two separate commits
as they go out of order compared to previous commits here.

Tested on GnuBee PC1.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-05-15 06:45:07 +02:00
Rosen Penev
2d401925b9 ramips: mmc: Sync with staging drivers
Mostly whitespace cleanups. Some unneeded code was removed.

MMC init was also moved to the probe function as in
6069bdd087

The cleanup commits are over 100, making it hard to do them individually.

Tested on GnuBee PC1 with an SD card being used as swap.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-05-15 06:44:48 +02:00
Matthias Badaire
a0685deec4 ramips: Add i2c support for mt7620n
I2c is supported on mt7620n like on mt7620a when checking the datasheet

Signed-off-by: Matthias Badaire <mbadaire@gmail.com>
2018-05-15 06:39:46 +02:00
NeilBrown
edea934799 ramips: remove unnecessary resource details.
These resources are extracted from devicetree, so they aren't
needed here.

Signed-off-by: NeilBrown <neil@brown.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-14 16:24:07 +02:00
NeilBrown
1f78625714 ramips: remove conditional compilation.
Code currently defines:

and then compiles code only if they are defined.
We might want to disable some of these via devicetree one
day, but for now just remove the #defines and the
conditions - all the code for different ports is
easy to identify.

Signed-off-by: NeilBrown <neil@brown.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-14 16:24:04 +02:00
NeilBrown
5f7396ebef ramips: improve interrupt mapping
As the Interrupts for the PCI adapters are listed in
devicetree we shouldn't need to have them explicit in the code.

The simplest way to do this is to use of_irq_parse_and_map_pci()
and specify an interrupt-map which identifies the different
PCI hosts by bus/slot numbers.
This has the advantage that the hwirq number are mapped to virq
numbers for us, so the ugly hack can go.

Signed-off-by: NeilBrown <neil@brown.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-14 16:23:59 +02:00
Christian Lütke-Stetzkamp
2ad4daf579 ramips: Remove redundant owner assignment
Remove the owner assignment form the platform driver as
platform_driver_register() already initializes the owner.
Found using coccinelle.

Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-14 16:23:36 +02:00
Rosen Penev
a098a78a33 ramips: Move PCI driver to files directory
This will make it easier to port upstream code.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-05-14 15:55:17 +02:00
Felix Fietkau
6069bdd087 ramips: move mtk-mmc init to probe function to avoid breaking NAND flash
The driver messes with the pin control settings - MMC and NAND are
mutually exclusive

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-05-08 17:56:04 +02:00
Felix Fietkau
f95a4aa565 ramips: clean up the mt7621 nand flash driver hacks, add support for the xiaomi mir3g flash chip
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-05-08 17:56:04 +02:00
Davide Ammirata
004cc22e4e ramips: add support for mqmaker witi 512mb version
Splitted out the dts file and create the new dts for the 256 MByte RAM and
the 512 MB RAM version.

Migrate both versions to the common board detection.

The install the 512 MByte Version on a board running the 256 MByte image,
a forceful sysupgrade with the -F flag is required.

Signed-off-by: Davide Ammirata <list@davidea.it>
2018-05-07 18:54:23 +02:00
Matthias Badaire
5ef79af4f8 ramips: add support for Ravpower WD03
The RavPower WD03 is a battery powered SD card reader and a USB port.

Specifications:
SOC:     MediaTek MT7620N
BATTERY: 6000mah
WLAN:    802.11bgn
LAN:     1x 10/100 Mbps Ethernet
USB:     1x USB 2.0 (Type-A)
RAM:     PM Tech PMD708416CTR-5CN 32 MB
FLASH:   Holtek HT66F40 - 8 MB Flash
LED:     Power button and 4 leds to indicate power level of the
         battery (could not get control of that)
INPUT:   Power, reset button
OTHER:   USB SD-Card reader with card detect on GPIO#42

Tested and working:
 - Ethernet
 - 2.4 GHz WiFi (Correct MAC-address)
 - installation from tftp
 - OpenWRT sysupgrade (Preserving and non-preserving)
 - LEDs
 - Buttons

Installation:
 - Download the sysupgrade image
 - Place it in the root of a clean TFTP server running on your computer.
 - Rename the image to "kernel" — be sure there is no file extension.
 - Plug the WD03 into your computer via ethernet.
 - Set your computer to use 10.10.10.254 as its IP address.
 - With your WD03 shut down, hold down the power button until the first
   white LED lights up.
 - Push and hold the reset button and release the power button. Continue
   holding the reset button for 30 seconds or until it begins searching
   for files on your TFTP server, whichever comes first.
 - The WD03 (10.10.10.128) will look for your computer at 10.10.10.254
   and install the kernel file. Once it has finished installation of the
   kernel file, it will search for a (nonexistent) rootfs file — when it
   begins searching for this file, shut down the WD03 by holding the
   power button normally.
 - Start up your WD03 normally.

Signed-off-by: Matthias Badaire <mbadaire@gmail.com>
2018-05-07 18:54:23 +02:00
John Crispin
6e0ae87a98 ramips: disable spi full duplex on mt7621
Signed-off-by: John Crispin <john@phrozen.org>
2018-05-05 08:25:18 +02:00
Mathias Kresin
91e11bec74 ramips: fix mt7628 eval board pinmux
There is no pinmux group "jtag" for mt7628 and the pinmux driver fails
to load due to the use of the not existing group.

Fixes: FS#1515

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-04-25 20:33:27 +02:00
Mathias Kresin
d089a5d773 ramips: create image for mt7628 evb board
The image for the EVB board got lost with the merge of the mt7628 and
mt7688 subtargets.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-04-23 22:07:22 +02:00
Tobias Wolf
3d800f14a9 ramips: use patch-dtb for F5D8235 V1
The old DTB method (OWRTDTB) is not recognized by the boot process
anymore with 4.9/4.14.

This patch reuses KERNEL_DTB to get a valid DTB applied to the kernel
image.

Signed-off-by: Tobias Wolf <github-NTEO@vplace.de>
2018-04-23 22:07:22 +02:00
Mathias Kresin
74a0d8cd92 build: consolidate fake uImage header build commands
Merge the two existing functions and use a parameter for the type
header field.

It updates the syntax of the former mpc85xx fake ramdisk header
command to be compatible with mkimage from u-boot 2018.03 and fixes the
build error spotted by the build bot.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-04-20 20:58:52 +02:00
Felix Fietkau
173d93ea23 ramips: fix locking issues in the ethernet driver
The stats update needs to protect against being interrupted by a tasklet
The u64 stats seqlock needs to be initialized

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-17 11:29:31 +02:00
Mathias Kresin
e988b0fe0d ramips: mt7620: fix double use of pins
The pins are used as (LED) GPIOs and can't be used at the same time as
hardware controlled ephy (LED) pins.

Fixes: FS#1500

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-04-17 08:40:56 +02:00
Stijn Tintel
ec1d7b9461 kernel: bump 4.14 to 4.14.34
Refresh patches.
Update patches that no longer apply:
- backport/313-netfilter-remove-defensive-check-on-malformed-packet.patch
- pending/642-net-8021q-support-hardware-flow-table-offload.patch

Compile-tested: x86/64.
Runtime-tested: x86/64.

Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2018-04-16 00:22:57 +03:00
Felix Fietkau
31a6ee0219 ramips: remove broken and bogus spinlock in the SPI driver
Based on patch by Neil Brown

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-14 20:12:32 +02:00
Felix Fietkau
ceff5d8c82 ramips: add missing unlock in fe_phy_link_adjust
Based on patch by Neil Brown

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-14 20:12:32 +02:00
Felix Fietkau
07b4e49abb ramips: fix usb phy compatible string (should fix FS#1489)
In the new USB phy driver, it checks the compatible string before
attempting to iomap its mem resource and do the extra PHY init

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-13 13:13:53 +02:00
Mathias Kresin
dda5d9b786 ramips: rename pwm kernel module
With kernel 4.14 the OpenWrt specific module name collides with the
upstream added module for Mediatek ARM Socs.

During addition of preliminary support for kernel 4.14, the config
symbol used by the out of tree driver was already renamed but the ramips
kernel package wasn't updated.

Fix the build error by updating the config and kernel module name for
the kernel package.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-04-08 12:35:33 +02:00
Vianney le Clément de Saint-Marcq
bcf2125142 ramips: add support for Zorlik ZL5900V2
The Zorlik ZL5900V2 is an unbranded clone of HAME MPR-A1/2.  It is
marketed as "3G Wi-Fi Router".  Only the PCB has the model name
"ZL5900V2" printed on it.

Specifications:
- Ralink RT5350F (360 MHz)
- 32 MB RAM
- 8 MB Flash
- 802.11bgn 1T1R
- 1x 10/100 Mbps Ethernet
- 1x USB 2.0 (Type-A)
- 5200 mAh battery

The ramdisk image (not the squashfs sysupgrade image) can be flashed
through the web interface (named "GoAhead") of the factory firmware.
However, as the factory firmware does not cleanly unmount the rootfs
before flashing, the device may hang instead of rebooting after
successful write.  Power cycling the device gets you in OpenWrt where
the squashfs image may be flashed through normal sysupgrade procedure.

Signed-off-by: Vianney le Clément de Saint-Marcq <code@quartic.eu>
2018-04-08 09:53:50 +02:00
Zheng Qian
80a94aacaf ramips: add support for the YouHua WR1200JS
YouHua tech WR1200JS is an AC1200 router with 5 1Gb ports (4 Lan, 1 Wan)
and 1 USB 2.0 port.

Devices is base on MediaTek MT7621AT + MT7603E + MT7612E.

Specification:

- MT7612AT (880 MHz)
- 128 MB of RAM
- 16 MB of FLASH (SPI NOR)
- 5x 10/100/1000 Mbps Ethernet
- 2T2R 2.4 GHz (MT7603E)
- 2T2R 5 GHz (MT7612E)
- 1x USB 2.0
- 10x LED (Power 2G 5G WPS Internet LAN4-1 USB)
- 3x button (reset wifi wps)
- DC jack for main power input (12V)

Installation:

1.) Press reset key 5 sec and restore the factory default
2.) Login webUI and change username to root and set a
    new password
3.) Visit http://192.168.2.254/adm/telnetd.shtml and
    turn on the telnet service
4.) Copy openwrt-ramips-mt7621-youhua_wr1200js-initramfs-kernel.bin
    to a usb pan
5.) Plug the usb pan to the router, telnet to the router
    and login by root
6.) cd /media/sda1 and check the initramfs file is there
7.) exec command:
    mtd_write write openwrt-ramips-mt7621-youhua_wr1200js-initramfs-kernel.bin Kernel
8.) reboot and visit 192.168.1.1

Signed-off-by: Zheng Qian <sotux82@gmail.com>
2018-04-08 09:52:48 +02:00
Giuseppe Lippolis
1680ae7eae ramips: add dwr-512 jboot firmware configuration
The previous fw version require the replacement of the stock bootloader
with u-boot. This prevent an easy stock restore of the original fw.

Now a proper fw util has been developed to manage the stock jboot
bootloader. Therefore make sense have a fw image for the stock
bootloader.

The old fw configuration (u-boot) is not compatible with the new one
and will not be supported anymore.

So at the end 2 image can be generated:

1) factory image with jboot bootloader
     openwrt-ramips-rt305x-dwr-512-b-squashfs-factory.bin
2) sysupgrade image with jboot bootloader
     openwrt-ramips-rt305x-dwr-512-b-squashfs-sysupgrade.bin

Signed-off-by: Giuseppe Lippolis <giu.lippolis@gmail.com>
2018-04-08 09:51:06 +02:00
Vianney le Clément de Saint-Marcq
eda27d7557 ramips: fix usbphy DT nodes on linux 4.14
The Ralink USB PHY driver merged into mainline has a slightly different
device tree binding than the patch that was used with linux 4.9.
The new driver requires a `ralink,sysctl` node pointing to the `syscon`
node.

This patch also sets `#phy-cells` to 0, as recommended by the mainline
documentation [1].

[1] Documentation/devicetree/bindings/phy/ralink-usb-phy.txt

Signed-off-by: Vianney le Clément de Saint-Marcq <code@quartic.eu>
2018-04-07 17:53:34 +02:00
Piotr Dymacz
10ea53f900 ramips: add U-Boot env support for ALFA Network AC1200RM
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
2018-04-06 23:11:00 +02:00
Piotr Dymacz
68dcec7e16 ramips: image: drop redundant SUPPORTED_DEVICES
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
2018-04-06 23:11:00 +02:00
John Crispin
bfed382540 ramips: fix build error caused by missing ifdef guard in hwnat code
Signed-off-by: John Crispin <john@phrozen.org>
2018-04-06 21:33:35 +02:00
John Crispin
424a9ae128 ramips: implement hardware NAT offload for MT7621
Supports IPv4 flow offloading on MT7621 for Routing, SNAT and DNAT

Supported are regular ethernet->ethernet connections, including one
802.1q VLAN and/or PPPoE encapsulation

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-06 19:37:53 +02:00
Felix Fietkau
dea9922acd ramips: drop linux 4.9 support
4.14 has been tested a lot by a number of users, and we want to use it
for the release.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-06 18:21:45 +02:00
Felix Fietkau
804952e7ef ramips: switch to linux 4.14
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-06 18:07:43 +02:00
NeilBrown
f27336e115 ramips: mtk-mmc: don't advertise highmem support.
of_dma_configure() sets a default ->dma_mask of
DMA_BIT_MASK(32), claiming devices can DMA from
the full 32bit address space.
The mtk-mmc driver does not support access to
highmem pages, so it is really limited to the
bottom 512M (actually 448M due to 64M of IO space).
Setting ->dma_mask to NULL causes mmc_setup_queue()
to fall-back to using BLK_BOUNCE_HIGH to tell the
block layer to use a bounce-buffer for any highmem
pages requiring IO.

Signed-off-by: NeilBrown <neil@brown.name>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-05 19:48:47 +02:00
Felix Fietkau
6a621f4bd9 ramips: fix BUG_ON on mtk-mmc driver probe
Our .dts files only have one device defined and this is unlikely to
change, so statically initialize host->id to 0.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-05 18:12:30 +02:00
Felix Fietkau
f9b2d369a6 ramips: move mtk-mmc driver code out of patches-*/ and into files-*/
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-04-05 18:12:30 +02:00
Pawel Dembicki
8db84cc0ee ramips: add support for DLINK DWR-921-C3
The DWR-921-C3 Wireless Routers with LTE embedded modem is based on the
MT7620N SoC.

Specification:

  * MediaTek MT7620N (580 Mhz)
  * 64 MB of RAM
  * 16 MB of FLASH
  * 802.11bgn radio
  * 5x 10/100 Mbps Ethernet (1 WAN and 4 LAN)
  * 2x external, detachable (LTE) antennas
  * UART header on PCB (57600 8n1)
  * 6x LED (GPIO-controlled)
  * 1x bi-color Signal Strength LED (GPIO-controlled)
  * 2x button
  * JBOOT bootloader

Installation:
Apply factory image via d-link http web-gui.

How to revert to OEM firmware:
1.) Push the reset button and turn on the power. Wait until LED start
    blinking (~10sec.)
2.) Upload original factory image via JBOOT http (IP: 192.168.123.254)
3.) If http doesn't work, it can be done with curl command:
    curl -F FN=@XXXXX.bin http://192.168.123.254/upg
    where XXXXX.bin is name of firmware file.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
2018-04-04 08:42:46 +02:00
Giuseppe Lippolis
6525bffc0a ramips: add support for DLINK DWR-921-C1
The DWR-921-C1 Wireless Routers with LTE embedded modem is based on the
MT7620N SoC.

Specification:

  * MediaTek MT7620N (580 Mhz)
  * 64 MB of RAM
  * 16 MB of FLASH
  * 802.11bgn radio
  * 5x 10/100 Mbps Ethernet (1 WAN and 4 LAN)
  * 2x external, detachable (LTE) antennas
  * UART header on PCB (57600 8n1)
  * 6x LED (GPIO-controlled)
  * 1x bi-color Signal Strength LED (GPIO-controlled)
  * 2x button
  * JBOOT bootloader

The status led has been assigned to the dwr-921-c1:green:sigstrength (lte
signal strength) led. At the end of the boot it is switched off and is
available for lte operation. Work correctly also during sysupgrade
operation.

Installation:
Apply factory image via d-link http web-gui.

How to revert to OEM firmware:
1.) Push the reset button and turn on the power. Wait until LED start
    blinking (~10sec.)
2.) Upload original factory image via JBOOT http (IP: 192.168.123.254)
3.) If http doesn't work, it can be done with curl command:
    curl -F FN=@XXXXX.bin http://192.168.123.254/upg
    where XXXXX.bin is name of firmware file.

Signed-off-by: Giuseppe Lippolis <giu.lippolis@gmail.com>
2018-04-04 08:42:35 +02:00
André Draszik
cd75d6f7b3 ramips: mt7620: eMMC: fix compiler warnings in non-debug mode
drivers/mmc/host/mtk-mmc/dbg.c:51:13: warning: 'cmd_buf' defined but not used [-Wunused-variable]
 static char cmd_buf[256];
             ^~~~~~~

In addition, msdc_reg[] is completely unused, even in debug
mode.

Signed-off-by: André Draszik <git@andred.net>
2018-04-04 08:29:17 +02:00
André Draszik
584b2a26f5 ramips: mt7620: eMMC: remove unused variable
msdc_6575_host[] is unused, just remove it. Also, it
was the source of memory corruption up until the
previous fix to this driver.

Signed-off-by: André Draszik <git@andred.net>
2018-04-04 08:29:17 +02:00
André Draszik
ace1686200 ramips: mt7620: eMMC: stop invalid memory access if only one device is defined
pdev->id is -1 when only one device exists, and is used:
* as an index into drv_mode[] to determine whether to use
  PIO or DMA mode (via host->id)
* as an index into msdc_6575_host[], to store the
  mmc_priv() data.

Obviously, -1 is not a valid index in either case, causing
us to read invalid memory, and memory corruption,
respectively.

The invalid memory read is causing non-deterministic
behaviour, in particular in the v4.4 kernel it still
picked DMA mode, but in the v4.9 it now always picks
PIO mode.
Also, PIO mode doesn't work, causing the following:

/ # echo 3 > /proc/sys/vm/drop_caches
[ 3845.249237] sh (128): drop_caches: 3

/ # /root/usr/lib/libc.so
[ 3846.096070] do_page_fault(): sending SIGSEGV to libc.so for invalid read access from 7f9cb5a0
[ 3846.104758] epc = 779b0ea4 in libc.so[7792f000+c3000]
[ 3846.109907] ra  = 779a8004 in libc.so[7792f000+c3000]
Segmentation fault

/ # /root/usr/lib/libc.so
musl libc (mipsel-sf)
Version 1.1.16-git-40-g54807d47
Dynamic Program Loader
Usage: /root/usr/lib/libc.so [options] [--] pathname [args]

(i.e. initial page-in of any binary causes a segfault,
subsequent access works.)

While this change doesn't fix PIO mode, it at least makes
us deterministically use DMA (which works), and it also
stops us from corrupting memory.

Signed-off-by: André Draszik <git@andred.net>
2018-04-04 08:29:17 +02:00
André Draszik
dcbf6284e5 ramips: mt7620: eMMC: fix MODULE_DEVICE_TABLE
This was referencing an undefined symbol, probably
due to copy/paste error.

Signed-off-by: André Draszik <git@andred.net>
2018-04-04 08:29:16 +02:00
André Draszik
7d44b36c98 ramips: mt7620: eMMC: fix compiler warning (misleading indentation)
drivers/mmc/host/mtk-mmc/sd.c:2782:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if ((hw->flags & MSDC_SDIO_IRQ) || (hw->flags & MSDC_EXT_SDIO_IRQ))
     ^~
drivers/mmc/host/mtk-mmc/sd.c:2785:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  cd_active_low = !of_property_read_bool(pdev->dev.of_node, "mediatek,cd-high");
  ^~~~~~~~~~~~~

Signed-off-by: André Draszik <git@andred.net>
2018-04-04 08:29:16 +02:00
André Draszik
bbbd71e3ea ramips: mt7620: eMMC: clear owner field
a) This is not needed in recent kernels anymore (> 3.x ??)
b) this allows driver unloading now

Signed-off-by: André Draszik <git@andred.net>
2018-04-04 08:29:16 +02:00
Hauke Mehrtens
a74fd570a2 kernel: update kernel 4.14 to 4.14.32
The following patches are now included upstream:
* 0052-MIPS-lantiq-fix-usb-clocks.patch
* 0053-MIPS-lantiq-enable-AHB-Bus-for-USB.patch
* 0060-lantiq-ase-enable-MFD-SYSCON.patch

Closes: FS#1466

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Tested-by: Stijn Segers <foss@volatilesystems.org>
Tested-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-04-03 23:26:45 +02:00
Hauke Mehrtens
aed03d5d0f kernel: update kernel 4.9 to version 4.9.91
* Refreshed patches.
 * Deleted 210-Revert-led-core-Fix-brightness-setting-when-setting-.patch (was accepted upstream)
 * Deleted 812-pci-dwc-fix-enumeration.patch (was accepted upstream)

Compile and run tested on lantiq

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2018-03-31 16:31:26 +02:00
Stijn Segers
41a881a8d9 Kernel: bump 4.14 to 4.14.29
Right patch version this time, sorry!

* Patch 180-usb-xhci-add-support-for-performing-fake-doorbell.patch had to be adjusted slightly because of upstream adapted code.
* Refreshed patches.

Compile-tested: ramips/mt7621, x86/64
Run-tested: ramips/mt7621, x86/64
Signed-off-by: Stijn Segers <foss@volatilesystems.org>
Tested-by: Rosen Penev <rosenp@gmail.com>
2018-03-23 23:49:55 +01:00
Felix Fietkau
a276002079 ramips: remove dead (and potentially crashy) code in mt7621 gsw init
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-03-23 20:56:34 +01:00
Felix Fietkau
147b679891 ramips: rename ethernet priv->device field to dev to match upstream
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-03-23 20:56:34 +01:00
INAGAKI Hiroshi
e3bf92edf5 ramips: fix switch and MAC address for WHR-G300N
WHR-G300N has 5 ethernet ports (lan: 4, wan: 1), but there was no
correct configuration in 02_network script and 6 ports was configured
on the switch.
Also, since the MAC address was not acquired from factory partition,
incorrect values was set to LAN and WAN interfaces.

This commit fixes these issues.

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
2018-03-23 20:31:49 +01:00
Peter Lundkvist
d13b05741a ramips: add support for TP-Link TL-WR902AC v3
TP-Link TL-WR902AC v3 is a pocket-size dual-band (AC750) router
based on MediaTek MT7628N + MT7650E.

Specification:
- MediaTek MT7628N/N (580 Mhz)
- 64 MB of RAM
- 8 MB of FLASH
- 2T2R 2.4 GHz and 1T1R 5 GHz
- 1x 10/100 Mbps Ethernet

* MT7650 ac chip isn't not supported by LEDE/OpenWrt at the moment.
  Therefore 5Ghz won' work.

Flash instruction:

The only way to flash LEDE image in TL-WR902AC v3 is to use
tftp recovery mode in U-Boot:

1. Configure PC with static IP 192.168.0.66/24 and tftp server.
2. Rename "openwrt-ramips-mt76x8-tplink_tl-wr902ac-v3-squashfs-tftp-recovery.bin"
   to "tp_recovery.bin" and place it in tftp server directory.
3. Connect PC with the LAN port, press the reset button, power up
   the router and keep button pressed for around 6-7 seconds, until
   device starts downloading the file.
4. Router will download file from server, write it to flash and reboot.

Signed-off-by: Peter Lundkvist <peter.lundkvist@gmail.com>
[drop p2led_an pinmux, this pin isn't used as gpio, fix whitespace issues]
Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-03-18 22:22:38 +01:00
Pawel Dembicki
a5bd8de0bd ramips: add support for D-Link DWR-116-A1/2
The DWR-116-A1/2 Wireless Router is based on the MT7620N SoC.

Specification:

  MediaTek MT7620N (580 Mhz)
  32 MB of RAM
  8 MB of FLASH
  802.11bgn radio
  5x 10/100 Mbps Ethernet (1 WAN and 4 LAN)
  2x external, non-detachable antennas
  UART (J1 in A1, JP1 in A2) header on PCB (57600 8n1)
  6x LED (GPIO-controlled), 2x button
  JBOOT bootloader

Known issues:
WAN LED is drived by uartl tx pin. I decide to use this pin as
uartlite tx pin.

Installation:
Apply factory image via http web-gui.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
2018-03-18 22:22:38 +01:00
INAGAKI Hiroshi
dbdc26ba33 ramips: fix switch for Nexx devices
There are 2 ethernet ports on Nexx WT1520 and WT3020. These ethernet
ports are assigned as follows, and other ports cannot be used.

- WT1520:
  - port0 -> lan
  - port4 -> wan

- WT3020:
  - port0 -> wan
  - port4 -> lan

I dropped ports that cannot be used.

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
2018-03-17 08:09:04 +01:00
Mathias Kresin
d482356322 ramips: mt7620n: add mdio node and disable port4 by default
Revert the changes I applied to aa5014dd1a ("ramips: mt7620n: enable
port 4 as EPHY by default").

The driver expects a node mdio-bus to be present, regardless of the
actual node status. If the node is missing the driver fails to load  with

  mtk_soc_eth 10100000.ethernet: no mdio-bus child node found

Disable port4 by default again. If the port is enabled but not present, a
"invalid port id 4" warning is shown during boot.

Fixes: FS#1428

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-03-13 20:18:15 +01:00
John Crispin
d57ca53ff9 Revert "ramips: gpio: fix compilation if CONFIG_GPIO_SYSFS=n"
This reverts commit cff2dedebc.

This patch causes build issues

Signed-off-by: John Crispin <john@phrozen.org>
2018-03-13 13:10:21 +01:00
André Draszik
cff2dedebc ramips: gpio: fix compilation if CONFIG_GPIO_SYSFS=n
If CONFIG_GPIO_SYSFS=n, compilation fails with
  drivers/built-in.o: In function `gpio_export_with_name':
  include/asm-generic/gpio.h:128: undefined reference to `__gpiod_export'

This is because the stub in that case has the wrong name,
_gpiod_export() - note the missing underscore (_) at the
start.

Fix the stub, and add the correct prototype for the real
implementation.

Signed-off-by: André Draszik <git@andred.net>
2018-03-13 08:34:58 +01:00