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* cros_ec: Support keyboard scanning with EC_CMD_GET_NEXT_EVENTAlper Nebi Yasak2020-11-051-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The cros_ec_keyb driver currently uses EC_CMD_MKBP_STATE to scan the keyboard, but this host command was superseded by EC_CMD_GET_NEXT_EVENT and unavailable on more recent devices (including gru-kevin), as it was removed in cros-ec commit 87a071941b89 ("mkbp: Add support for buttons and switches.") dated 2016-07-06. The EC_CMD_GET_NEXT_EVENT has been available since cros-ec commit d1ed75815efe ("MKBP event signalling implementation") dated 2014-10-20, but it looks like it isn't included in firmware-* branches for at least link, nyan-big, samus, snow, spring, panther and peach-pit which have defconfigs in U-Boot. So this patch falls back to the old method if the EC doesn't recognize the newer command. The implementation is mostly adapted from Depthcharge commit f88af26b44fc ("cros_ec: Change keyboard scanning method."). On a gru-kevin, the current driver before this patch fails to read the pressed keys with: out: cmd=0x60: 03 9d 60 00 00 00 00 00 in-header: 03 fc 01 00 00 00 00 00 in-data: ec_command_inptr: len=-1, din=0000000000000000 check_for_keys: keyboard scan failed However the keyboard works fine with the newer command: out: cmd=0x67: 03 96 67 00 00 00 00 00 in-header: 03 ef 00 00 0e 00 00 00 in-data: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ec_command_inptr: len=14, din=00000000f412df30 key_matrix_decode: num_keys = 0 0 valid keycodes found out: cmd=0x67: 03 96 67 00 00 00 00 00 in-header: 03 df 00 00 0e 00 00 00 in-data: 00 00 00 00 00 00 00 00 00 00 00 00 10 00 ec_command_inptr: len=14, din=00000000f412df30 key_matrix_decode: num_keys = 1 valid=1, row=4, col=11 keycode=28 1 valid keycodes found {0d} Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* cros_ec: Add new features for events and powerSimon Glass2018-11-201-0/+89
| | | | | | | This adds new commands to the EC related to setting and clearing events as well as controlling power-related settings. Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: Update cros_ec_read_hash() to specify the imageSimon Glass2018-10-091-1/+3
| | | | | | Allow selection of which EC image to hash. Signed-off-by: Simon Glass <sjg@chromium.org>
* cros: Adjust board_get_cros_ec_dev() to return a udeviceSimon Glass2018-10-091-3/+1
| | | | | | | Rather than returning what is effectively an internal data structure, return the cros EC device itself. Signed-off-by: Simon Glass <sjg@chromium.org>
* cros: Update cros_ec code to use struct udeviceSimon Glass2018-10-091-35/+31
| | | | | | | | At present we pass around a private pointer to specify the cros_ec device. With driver model it makes more sense to pass the device. Update the code to do this. Signed-off-by: Simon Glass <sjg@chromium.org>
* SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini2018-05-071-2/+1
| | | | | | | | | | | | | | | | | | | | When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
* cros_ec: Convert to support live treeSimon Glass2017-06-011-5/+2
| | | | | | | | | Convert this driver to support the live device tree and remove the old fdtdec support. The keyboard is not yet converted. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Add a place to put extra device-tree reading functionsSimon Glass2017-06-011-0/+1
| | | | | | | | Some functions deal with structured data rather than simple data types. It makes sense to have these in their own file. For now this just has a function to read a flashmap entry. Move the data types also. Signed-off-by: Simon Glass <sjg@chromium.org>
* cmd: crosec: Move cros_ec_decode_region helper to cmd/cros_ec.cMoritz Fischer2016-12-021-9/+0
| | | | | | | | | | | The cros_ec_decode_region() function is only used in combination with the crosec cmds. Move the function to the correct place. Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com> Cc: Simon Glass <sjg@chromium.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: u-boot@lists.denx.de Acked-by: Simon Glass <sjg@chromium.org>
* cmd: cros_ec: Move crosec commands to cmd subdirectoryMoritz Fischer2016-10-111-0/+11
| | | | | | | | | | | | | | | | | | Move crosec commands from drivers/misc/cros_ec.c to cmd/cros_ec.c Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com> Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Miao Yan <yanmiaobest@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Stefan Roese <sr@denx.de> Cc: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Nishanth Menon <nm@ti.com> Cc: u-boot@lists.denx.de
* cros_ec: Honor the google,remote-bus dt propertyMoritz Fischer2016-10-081-1/+3
| | | | | | | | | | | | Boards where ECs that use a I2C port != 0 specify this in the devicetree file via the google,remote-bus property. Previously this was ignored and hardcoded to port 0. Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com> Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: u-boot@lists.denx.de Acked-by: Simon Glass <sjg@chromium.org>
* cros_ec: Use udevice instead of cros_ec_dev for keyboard functionsSimon Glass2015-11-191-2/+2
| | | | | | | In preparation for converting the cros_ec keyboard driver to driver model, adjust the cros_ec functions it will use to use a normal struct udevice. Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: Remove the old tunnel codeSimon Glass2015-08-051-14/+0
| | | | | | This is not needed with driver mode. Remove it. Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: Support the LDO access method used by springSimon Glass2015-08-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | Add a driver to support the special LDO access used by spring. This is a custom method in the cros_ec protocol - it does not use an I2C pass-through. There are two implementation choices: 1. Write a special LDO driver which can talk across the EC. Duplicate all the logic from TPS65090 for retrying when the LDO fails to come up. 2. Write a special I2C bus driver which pretends to be a TPS65090 and transfers reads and writes using the LDO message. Either is distasteful. The latter method is chosen since it results in less code duplication and a fairly simple (30-line) implementation of the core logic. The crosec 'ldo' subcommand could be removed (since i2c md/mw will work instead) but is retained as a convenience. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: cros_ec: Convert the I2C tunnel code to use driver modelSimon Glass2015-08-051-2/+12
| | | | | | | | | | | | | | | | | | | The Chrome OS EC supports tunnelling through to an I2C bus on the EC. This currently uses a copy of the I2C command code and a special 'crosec' sub-command. With driver model we can define an I2C bus which tunnels through to the EC, and use the normal 'i2c' command to access it. This simplifies the code and removes some duplication. Add an I2C driver which tunnels through to the EC. Adjust the EC code to support binding child devices so that it can be set up. Adjust the existing I2C xfer function to fit driver model better. For now the old code remains to allow things to still work. It will be removed in a later patch once the new flow is fully enabled. Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: Remove unused cros_ec_board_init() functionSimon Glass2015-04-181-7/+0
| | | | | | Now that driver model handles cros_ec init, we can drop this special code. Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: Drop unused CONFIG_DM_CROS_ECSimon Glass2015-04-181-130/+0
| | | | | | | Since all supported boards enable this option now, we can remove it along with the old code. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: cros_ec: Remove use of fdtdec GPIO supportSimon Glass2015-01-291-1/+2
| | | | | | These functions are going away, so use the new uclass support instead. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: cros_ec: Add support for driver modelSimon Glass2014-10-221-1/+26
| | | | | | | | Add support for driver model if enabled. This involves minimal changes to the code, mostly just plumbing around the edges. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* cros_ec: Implement I2C pass-throughSimon Glass2014-03-171-0/+14
| | | | | | | | | The Chrome EC has a feature where you can access its I2C buses through a pass-through arrangement. Add a command to support this, and export the function for it also. Reviewed-by: Vadim Bendebury <vbendeb@google.com> Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: sandbox: Add Chrome OS EC emulationSimon Glass2014-03-171-0/+21
| | | | | | | | Add a simple emulation of the Chrome OS EC for sandbox, so that it can perform various EC tasks such as keyboard handling. Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: spi: Add support for EC protocol version 3Randall Spangler2014-03-171-0/+13
| | | | | | | | | Protocol version 3 will be attempted first; if the EC doesn't support it, u-boot will fall back to the old protocol version (2). Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Randall Spangler <rspangler@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: Clean up multiple EC protocol supportRandall Spangler2014-03-171-3/+2
| | | | | | | | | | | | | | | Version 1 protocols (without command version) were already no longer supported in cros_ec.c. This removes some dead code from the cros_ec_i2c driver. Version 2 protcols (with command version) are now called protocol_version=2, instead of cmd_version_is_supported=1. A subsequent change will introduce protocol version 3 for SPI. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Randall Spangler <rspangler@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: Sync up with latest Chrome OS EC versionSimon Glass2014-03-171-2/+2
| | | | | | The EC messages have been expanded and some parts have been renamed. Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: Add a function for decoding the Chrome OS EC flashmapSimon Glass2014-03-171-0/+19
| | | | | | | | In order to talk to the EC properly we need to be able to understand the layout of its internal flash memory. This permits emulation of the EC for sandbox, and also software update in a system with a real EC. Signed-off-by: Simon Glass <sjg@chromium.org>
* cros_ec: Move EC interface into common libraryVadim Bendebury2014-03-171-0/+18
| | | | | | | | | | Add a common library for obtaining access to the Chrome OS EC. This is used by boards which need to talk to the EC. Reviewed-by: Vadim Bendebury <vbendeb@google.com> Tested-by: Vadim Bendebury <vbendeb@google.com> Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-241-17/+2
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* cros: add cros_ec driverHung-ying Tyan2013-06-261-0/+449
This patch adds the cros_ec driver that implements the protocol for communicating with Google's ChromeOS embedded controller. Signed-off-by: Bernie Thompson <bhthompson@chromium.org> Signed-off-by: Bill Richardson <wfrichar@chromium.org> Signed-off-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Gabe Black <gabeblack@chromium.org> Signed-off-by: Hung-ying Tyan <tyanh@chromium.org> Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org> Signed-off-by: Randall Spangler <rspangler@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
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