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* commands: spi: fix NULL pointer dereferenceSteffen Trumtrar2019-05-171-0/+1
| | | | | | | | | | | | | | | The renaming of "master" to "controller" done in 812a9ddcdf211302a050cf8f61f7af577bc29a23 spi: Generalize SPI "master" to "controller" breaks the spi command, because the spi.master pointer is not assigned. The pointer is kept for backwards compatability. Assign it, so that spi drivers that are still using "spi->master" can be used. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* spi: Generalize SPI "master" to "controller"Steffen Trumtrar2019-05-081-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sync with Linux v5.1-rc1. This is the barebox adoption of the commit commit 8caab75fd2c2a92667cbb1cd315720bede3feaa9 Author: Geert Uytterhoeven <geert+renesas@glider.be> Date: Tue Jun 13 13:23:52 2017 +0200 spi: Generalize SPI "master" to "controller" Now struct spi_master is used for both SPI master and slave controllers, it makes sense to rename it to struct spi_controller, and replace "master" by "controller" where appropriate. For now this conversion is done for SPI core infrastructure only. Wrappers are provided for backwards compatibility, until all SPI drivers have been converted. Noteworthy details: - SPI_MASTER_GPIO_SS is retained, as it only makes sense for SPI master controllers, - spi_busnum_to_master() is retained, as it looks up masters only, - A new field spi_device.controller is added, but spi_device.master is retained for compatibility (both are always initialized by spi_alloc_device()), - spi_flash_read() is used by SPI masters only. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* commands: spi: do not restrict spi's data to be hex-formattedUlrich Ölmann2017-10-231-1/+1
| | | | | | | | | | | Change the default base to 0 to be consistent with the "mw" command and particularly allow decimally formatted data. The price to pay is needing the usual prefix "0x" for each hex-formatted number. Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* commands: spi: fix chip select validationStefan Lengfeld2016-11-081-2/+2
| | | | | | | | | The chip selects are numbered 0..(max chip selects - 1). Chip select with number <max chip selects> is invalid. Fix the check for that. Using the out of bound chip select may hang your board. Signed-off-by: Stefan Lengfeld <s.lengfeld@phytec.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* commands: harmonize in-barebox documentationHolger Schurig2014-05-141-11/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch does probably too much, but it's hard (and very cumbersome/time consuming) to break it out. What is does is this: * each command has one short description, e.g. "list MUX configuration" * made sure the short descriptions start lowercase * each command has one usage. That string contains just the options, e.g. "[-npn]". It's not part of the long help text. * that is, it doesn't say "[OPTIONS]" anymore, every usable option is listed by character in this (short) option string (the long description is in the long help text, as before) * help texts have been reworked, to make them - sometimes smaller - sometimes describe the options better - more often present themselves in a nicer format * all long help texts are now created with BUSYBOX_CMD_HELP_ macros, no more 'static const __maybe_unused char cmd_foobar_help[]' * made sure the long help texts starts uppercase * because cmdtp->name and cmdtp->opts together provide the new usage, all "Usage: foobar" texts have been removed from the long help texts * BUSYBOX_CMD_HELP_TEXT() provides the trailing newline by itself, this is nicer in the source code * BUSYBOX_CMD_HELP_OPT() provides the trailing newline by itself * made sure no line gets longer than 77 characters * delibertely renamed cmdtp->usage, so that we can get compile-time errors (e.g. in out-of-tree modules that use register_command() * the 'help' command can now always emit the usage, even without compiled long help texts * 'help -v' gives a list of commands with their short description, this is similar like the old "help" command before my patchset * 'help -a' gives out help of all commands Signed-off-by: Holger Schurig <holgerschurig@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* commands: group 'help' outputHolger Schurig2014-05-141-0/+1
| | | | | | | | | | | | | | | | | | | The old output of "help" was just producing a long list, that usually scrolled of the screen (even on a X11 terminal). This list is more compact, and also sorted by groups. The old output format (plus grouping) is now available with 'help -v'. Example: Information commands: ?, devinfo, help, iomem, meminfo, version Boot commands: boot, bootm, go, loadb, loads, loadx, loady, saves, uimage ... Signed-off-by: Holger Schurig <holgerschurig@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* commands: spi: Fix spi read procedureAlexander Shiyan2013-07-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Buffer for RX is set incorrectly. barebox@Phytec phyCORE-i.MX27:/ spi -r 128 -v device config bus_num = 0 max_speed_hz = 1000000 chip_select = 0 mode = 0x0 bits_per_word = 8 wrote 0 bytes 00000000: read 128 bytes 00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ unable to handle paging request at address 0x4dffd3d0 pc : [<a7f05ec4>] lr : [<a7f05ebc>] sp : a7fff890 ip : a7fff860 fp : a7f68820 r10: a6ffe9bc r9 : 00000000 r8 : 00000001 r7 : a6ffe9ec r6 : a6f00000 r5 : a6ffe9ec r4 : a6ffe9e4 r3 : a6ffe9e4 r2 : a6ffe9e5 r1 : a6ffe9e4 r0 : 4dffd3cc Flags: nZCv IRQs off FIQs off Mode SVC_32 ... Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mem: add the swab (swap bytes) option to memory_display()Antony Pavlov2012-11-261-2/+2
| | | | | Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* introduce spi commandJean-Christophe PLAGNIOL-VILLARD2012-11-121-0/+132
usefull to debug spi The command allow to read/write on a spi device Usage: spi [OPTION] [data to write 0xXX] write/read spi device. -b <bus_num> spi bus number (default = 0) -r <count> to read -c <cs> chip select (default = 0) -m <mode> spi mode (default = 0) -f <hz> max_speed_hz (default = 1MHz) -w <bit> bits_per_word (default = 8) -v verbose Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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