summaryrefslogtreecommitdiff
path: root/drivers/usb/host
Commit message (Collapse)AuthorAgeLines
* Merge branch 'master' of git://git.denx.de/u-boot-usbTom Rini2013-03-18-40/+455
|\
| * usb: Add multiple controllers support for EHCI PCIVincent Palatin2013-03-18-9/+16
| | | | | | | | | | | | | | Use the ability to have several active EHCI controller on a system in the PCI EHCI controller implementation. Signed-off-by: Simon Glass <sjg@chromium.org>
| * usb: ehci: Fix aliasing issue in EHCI interrupt codeVincent Palatin2013-03-18-1/+1
| | | | | | | | | | | | | | | | | | | | The interrupt endpoint handling code stores the buffer pointer in the QH padding field. We need to make it the size of a pointer to avoid strict aliasing issue with the compiler. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
| * usb: ehci: Support interrupt transfers via periodic listPatrick Georgi2013-03-18-5/+316
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Interrupt transfers aren't meant to be used from the async list (the EHCI spec indicates trouble with low/full-speed intr on async). Build a periodic list instead, and provide an API to make use of it. Then, use that API from the existing interrupt transfer API. This provides support for USB keyboards using EHCI. Use timeouts to ensure we cannot get stuck in the keyboard scanning if something wrong happens (USB device unplugged or fatal I/O error) Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Signed-off-by: Julius Werner <jwerner@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
| * usb: ehci: exynos: Enable non-dt pathVivek Gautam2013-03-18-0/+7
| | | | | | | | | | | | | | | | Enabling the non-dt path for the driver so that we don't get any build errors for non-dt configuration. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
| * usb: ehci: exynos: Fix multiple FDT decodeVivek Gautam2013-03-18-28/+16
| | | | | | | | | | | | | | | | | | | | With current FDT support driver tries to parse device node twice in ehci_hcd_init() and ehci_hcd_stop(), which shouldn't happen ideally. Making provision to store data in a global structure and thereby passing its pointer when needed. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
| * usb/host/ehci: Add support for EHCI on spearVipin Kumar2013-03-16-0/+60
| | | | | | | | | | | | | | Add EHCI support for spear boards Signed-off-by: Armando Visconti <armando.visconti@st.com> Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
| * usb: ehci: Add 64-bit controller supportVincent Palatin2013-03-16-0/+3
| | | | | | | | | | | | | | | | On EHCI controller with 64-bit address space support, we must initialize properly the high word for the PCI bus master accesses. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
| * usb: ehci: generic PCI supportVincent Palatin2013-03-16-1/+40
| | | | | | | | | | | | | | | | | | Instead of hardcoding the PCI IDs on the USB controller, use the PCI class to detect them. Ensure the busmaster bit is properly set in the PCI configuration. Signed-off-by: Simon Glass <sjg@chromium.org>
* | Merge branch 'u-boot-tegra/master' into 'u-boot-arm/master'Albert ARIBAUD2013-03-15-16/+530
|\ \
| * | tegra: usb: move [start|stop]_port into ehci_hcd_[init|stop]Lucas Stach2013-03-14-68/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ehci_hcd entry points were just calling into the Tegra USB functions. Now that they are in the same file we can just move over the implementation. Signed-off-by: Lucas Stach <dev@lynxeye.de> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
| * | tegra: usb: move implementation into right directoryLucas Stach2013-03-14-2/+533
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This moves the Tegra USB implementation into the drivers/usb/host directory. Note that this merges the old /arch/arm/cpu/armv7/tegra20/usb.c file into ehci-tegra.c. No code changes, just moving stuff around. v2: While at it also move some defines and the usb.h header file to make usb driver usable for Tegra30. NOTE: A lot more work is required to properly init the PHYs and PLL_U on Tegra30, this is just to make porting easier and it does no harm here. Signed-off-by: Lucas Stach <dev@lynxeye.de> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
* | mxs: Make ehci-mxs multiport capableMarek Vasut2013-03-07-68/+81
| | | | | | | | | | | | | | | | | | | | | | Rework ehci-mxs so it supports both ports on MX28. It was necessary to wrap the per-port configuration into struct ehci_mxs_port and pull out the clock configuration function. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Otavio Salvador <otavio@ossystems.com.br> Cc: Stefano Babic <sbabic@denx.de>
* | mxs: Squash the header file usage in ehci-mxsMarek Vasut2013-03-07-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | The ehci-mxs driver included the register definitions directly. Use imx-regs.h instead since it contains proper handling of the differences between mx23 and mx28. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Otavio Salvador <otavio@ossystems.com.br> Cc: Stefano Babic <sbabic@denx.de> Acked-by: Otavio Salvador <otavio@ossystems.com.br>
* | USB: drop unneeded header in ehci-mx6Stefano Babic2013-03-07-1/+0
|/ | | | | | | | | | | Including header for pads is not needed and breaks board after renaming pin definitions. Series-to: u-boot Series-cc: marex@denx.de,fabio.estevam@freescale.com,eric.nelson@boundarydevices.com Signed-off-by: Stefano Babic <sbabic@denx.de>
* Merge branch 'u-boot-samsung/master' into 'u-boot-arm/master'Albert ARIBAUD2013-01-14-7/+85
|\
| * EHCI: Exynos: Add fdt supportRajeshwari Shinde2013-01-08-7/+85
| | | | | | | | | | | | | | | | | | Adding fdt support to ehci-exynos in order to parse register base addresses from the device node. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* | Merge 'u-boot-atmel/master' into 'u-boot-arm/master'Albert ARIBAUD2013-01-09-2/+4
|\ \ | |/ |/|
| * at91sam9x5: enable USB support for 9x5ek board.Richard Genoud2012-12-09-2/+4
| | | | | | | | | | | | Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Acked-by: Bo Shen <voice.shen@atmel.com> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
* | Merge branch 'master' of git://git.denx.de/u-boot into resolveMinkyu Kang2012-12-10-17/+24
|\ \ | |/ |/| | | | | | | | | | | | | | | | | Conflicts: README board/samsung/universal_c210/universal.c drivers/misc/Makefile drivers/power/power_fsl.c include/configs/mx35pdk.h include/configs/mx53loco.h include/configs/seaboard.h
| * usb: r8a6659: Fix build by missing of parenthesisNobuhiro Iwamatsu2012-11-20-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By commit c7e3b2b5, this was chanded to support multiple controllers. But this has missing of parenthesis. This commit fix it. ----- r8a66597-hcd.c: In function ‘usb_lowlevel_init’: r8a66597-hcd.c:911:52: error: expected declaration specifiers before ‘)’ token r8a66597-hcd.c:935:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or‘__attribute__’ before ‘{’ token r8a66597-hcd.c:939:1: error: expected ‘{’ at end of input ----- Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> CC: Lucas Stach <dev@lynxeye.de>
| * usb: r8a66597: Switched from variable to only macroNobuhiro Iwamatsu2012-11-20-10/+5
| | | | | | | | | | | | | | | | Some variables are initialized with a value defined by macro. This was changed to use the macro directly. And the variable not to use deleted it. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
| * usb: use linux/usb/ch9.h instead of usbdescriptors.hIlya Yanok2012-11-20-6/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linux usb/ch9.h seems to have all the same information (and more) as usbdescriptors.h so use the former instead of the later one. As a consequense of this change USB_SPEED_* values don't correspond directly to EHCI speed encoding anymore, I've added necessary recoding in EHCI driver. Also there is no point to put speed into pipe anymore so it's removed and a bunch of host drivers fixed to look at usb_device->speed instead. Old usbdescriptors.h included is not removed as it seems to be used by old USB device code. This makes usb.h and usbdevice.h incompatible. Fortunately the only place that tries to include both are the old MUSB code and it needs usb.h only for USB_DMA_MINALIGN used in aligned attribute on musb_regs structure but this attribute seems to be unneeded (old MUSB code doesn't support any DMA at all). Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
* | ehci-mxc: Fix host power mask bit for i.MX25Benoît Thébaudeau2012-11-19-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The correct bit for H1_PM is 16, not 8, which is the DP pull-up impedance selection bit. This issue has been reported by Eric Bénard <eric@eukrea.com> and fixed by Christoph Fritz <chf.fritz@googlemail.com> on Linux, from which these #define-s had been copied. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Marek Vasut <marex@denx.de>
* | ehci-mxc: Fix host power mask bit for i.MX35Benoît Thébaudeau2012-11-19-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The correct bit for H1_PM is 16, not 8, which is the DP pull-up impedance selection bit. This issue has been reported by Michael Burkey <mdburkey@gmail.com> and fixed by Christoph Fritz <chf.fritz@googlemail.com> on Linux, from which these #define-s had been copied. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Marek Vasut <marex@denx.de> Acked-by: Stefano Babic <sbabic@denx.de>
* | ehci-mx5/6: Make board_ehci_hcd_init() optionalBenoît Thébaudeau2012-11-16-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | A custom board_ehci_hcd_init() may be unneeded, so add a weak default implementation doing nothing. By the way, use simple __weak from linux/compiler.h for board_ehci_hcd_postinit() instead of weak alias with full attribute. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* | ehci-mxc: Add support for i.MX35Benoît Thébaudeau2012-11-16-0/+69
| | | | | | | | | | | | Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* | ehci-mxc: Define host offsetsBenoît Thébaudeau2012-11-16-1/+1
| | | | | | | | | | | | | | | | | | | | Some MXC SoCs like the i.MX35 have hosts located at unusual offsets, so prepare to the introduction of i.MX35 support by defining the ehci-mxc hosts offsets at SoC level. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* | ehci-mxc: Make i.MX25 EHCI configurableBenoît Thébaudeau2012-11-16-8/+64
| | | | | | | | | | | | | | | | | | Use EHCI MXC configuration options for i.MX25. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Matthias Weisser <weisserm@arcor.de>
* | ehci-mxc: Make EHCI power/oc polarities configurableBenoît Thébaudeau2012-11-16-0/+56
| | | | | | | | | | | | | | | | | | | | Make EHCI power and overcurrent polarities configurable. If not set, these new configurartions keep the default register values so that existing board files do not have to be changed. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* | ehci-mx5: Add missing OC_DIS for i.MX53Benoît Thébaudeau2012-11-16-0/+24
| | | | | | | | | | | | | | | | The i.MX53 has MXC_H*_UCTRL_H*_OC_DIS_BIT bits to disable the oc pin. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* | ehci-mx5: Fix *PM usage for i.MX53Benoît Thébaudeau2012-11-16-1/+6
| | | | | | | | | | | | | | | | The MXC_*_UCTRL_*PM_BIT bits are available only on i.MX51. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* | ehci-mx5: Fix OPM usageBenoît Thébaudeau2012-11-16-2/+2
| | | | | | | | | | | | | | | | | | MXC_OTG_UCTRL_OPM_BIT disables (masks) the power/oc pins if set, like MXC_H1_UCTRL_H1PM_BIT and MXC_H2_UCTRL_H2PM_BIT, not the opposite. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* | ehci-mx5: Fix OC_DIS usageBenoît Thébaudeau2012-11-16-3/+3
| | | | | | | | | | | | | | | | | | MXC_OTG_PHYCTRL_OC_DIS_BIT disables the oc pin if set, like MXC_H1_OC_DIS_BIT, not the opposite. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* | ehci-mx5: Clean upBenoît Thébaudeau2012-11-16-19/+26
| | | | | | | | | | | | | | | | | | | | Clean up ehci-mx5: - Fix column alignments. - Fix comments. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* | ehci-mxc: Clean upBenoît Thébaudeau2012-11-16-46/+40
|/ | | | | | | | | | | Clean up ehci-mxc: - Remove useless #if's. - Fix identation. - Issue a #error if used with an unsupported platform. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
* powerpc/usb: fix bug of CPU hang when missing USB PHY clockShengzhou Liu2012-10-22-6/+16
| | | | | | | | | | | | | when missing USB PHY clock, u-boot will hang during USB initialization when issuing "usb start". We should check USBGP[PHY_CLK_VALID] bit to avoid CPU hanging in this case. Due to controller issue of PHY_CLK_VALID in ULPI mode, we set USB_EN before checking PHY_CLK_VALID, otherwise PHY_CLK_VALID doesn't work. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> Acked-by: Marek Vasut <marex@denx.de>
* dm: Move s3c24xx USB driver to a proper placeMarek Vasut2012-10-18-0/+2211
| | | | | | | | | Signed-off-by: Marek Vasut <marex@denx.de> Cc: David Müller <d.mueller@elsoft.ch> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: U-Boot DM <u-boot-dm@lists.denx.de>
* mx51: Fix USB PHY clocksBenoît Thébaudeau2012-10-15-1/+2
| | | | | | | | | | | | | | | The i.MX51 has a single USB PHY clock, while the i.MX53 has two. These 3 clocks have different clock gate control bit-fields. The existing code was correct only for i.MX53, so this patch fixes the i.MX51 use case. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Jana Rapava <fermata7@gmail.com> Cc: Wolfgang Grandegger <wg@denx.de> Cc: Igor Grinberg <grinberg@compulab.co.il>
* usb: ehci: don't print debug outputLucas Stach2012-10-15-1/+1
| | | | | | | This is clearly some sort of debug output and should not be printed during normal operation. Signed-off-by: Lucas Stach <dev@lynxeye.de>
* tegra20: port to new ehci interfaceLucas Stach2012-10-15-3/+2
| | | | | | | EHCI interface now supports more than one controller. Wire up our usb functions to use this new interface. Signed-off-by: Lucas Stach <dev@lynxeye.de>
* usb: ehci: rework to take advantage of new lowlevel interfaceLucas Stach2012-10-15-200/+171
| | | | | | | | | | | | | | Kill off ehci-core.h It was used to specify some static controller data. To support more than one controller being active at any time we have to carry the controller data ourselfes. Change the ehci interface accordingly. NOTE: OMAP implemented the ehci stuff a bit backwards and should be fixed to do the same thing as other platforms. But the change for now is at least compile clean. Signed-off-by: Lucas Stach <dev@lynxeye.de> Reviewed-by: Marek Vasut <marex@denx.de>
* usb: lowlevel interface change to support multiple controllersLucas Stach2012-10-15-10/+10
| | | | | | | | | | | Carry an index in the lowlevel usb functions to make specify the respective usb controller. Also pass through an controller struct from lowlevel_init to the creation of the root usb device of this controller. Signed-off-by: Lucas Stach <dev@lynxeye.de> Reviewed-by: Marek Vasut <marex@denx.de>
* usb: do explicit unaligned accessesLucas Stach2012-09-21-2/+5
| | | | | | | | | | | | | | | usb_hub_descriptor has to be packed as it's used for communication with the device. Member wHubCharacteristics violates the natural alignment rules. Use explicit unaligned access functions for this member. Fixes ARMv7 traping while using USB. v2: fix typo found by Thomas Langer v3: rebased on top of u-boot-usb/master Signed-off-by: Lucas Stach <dev@lynxeye.de>
* Merge branch 'master' of git://git.denx.de/u-boot-usbWolfgang Denk2012-09-02-134/+301
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'master' of git://git.denx.de/u-boot-usb: MUSB driver: Timeout is never detected as the while loop does not end usb: fix ulpi_set_vbus prototype pxa25x: Add UDC registers definitions USB: Fix strict aliasing in ohci-hcd usb: Optimize USB storage read/write ehci: Optimize qTD allocations usb_stor_BBB_transport: Do not delay when not required usb_storage: Remove EHCI constraints usb_storage: Restore non-EHCI support ehci-hcd: Boost transfer speed ehci: cosmetic: Define used constants ehci: Fail for multi-transaction interrupt transfers arm:trats: Enable g_dnl composite USB gadget with embedded DFU function on TRATS arm:trats: Support for USB UDC driver at TRATS board. dfu:cmd: Support for DFU u-boot command dfu: MMC specific routines for DFU operation dfu: DFU backend implementation dfu:usb: DFU USB function (f_dfu) support for g_dnl composite gadget dfu:usb: Support for g_dnl composite download gadget. ehci: cosmetic: Define the number of qt_buffers Signed-off-by: Wolfgang Denk <wd@denx.de>
| * USB: Fix strict aliasing in ohci-hcdTroy Kisky2012-09-01-39/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 5f6aa03fda2a0a79940765865c1e4266be8a75f8 USB: Fix complaints about strict aliasing in OHCI-HCD tried to fix this, but gcc4.4 still complains. So, this patch basically reverts the above and does a simpler fix. also, the above commit incorrectly changed /* corresponds to data_buf[4-7] */ datab [1] = 0; to /* corresponds to databuf.u8[4-7] */ databuf.u8[1] = 0; This patch also fixes that. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
| * ehci: Optimize qTD allocationsBenoît Thébaudeau2012-09-01-30/+37
| | | | | | | | | | | | | | | | | | | | Relax the qTD transfer alignment constraints in order to need less qTDs for buffers that are aligned to 512 bytes but not to pages. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Ilya Yanok <ilya.yanok@cogentembedded.com> Cc: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
| * ehci-hcd: Boost transfer speedBenoît Thébaudeau2012-09-01-29/+138
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch takes advantage of the hardware EHCI qTD queuing mechanism to avoid software and transfer splitting overhead so as to make transfers as fast as possible. The only drawback is a call to memalign. However, this is fast compared to the transfer timings, and the heap size to allocate is small, e.g. 128 kiB in the worst case for a transfer length of 65535 packets of 512 bytes. Tested on i.MX25, i.MX35 and i.MX51. In my test conditions, the speed gain was very significant (several times faster), which is really appreciable when accessing large files. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Ilya Yanok <ilya.yanok@cogentembedded.com> Cc: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
| * ehci: cosmetic: Define used constantsBenoît Thébaudeau2012-09-01-69/+118
| | | | | | | | | | | | | | | | | | Make some light cosmetic code cleanup by the way. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Ilya Yanok <ilya.yanok@cogentembedded.com> Cc: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
| * ehci: Fail for multi-transaction interrupt transfersBenoît Thébaudeau2012-09-01-1/+10
| | | | | | | | | | | | | | | | | | | | | | Interrupt transfers requiring several transactions are not supported by submit_int_msg() because bInterval is ignored. This patch returns a failure code and prints an error message in this case. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Ilya Yanok <ilya.yanok@cogentembedded.com> Cc: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>