kernel/linux.git/include/linux/platform_data/cros_ec_commands.h, branch v6.12.80

platform/chrome: Update binary interface for EC-based charge control

2024-07-01T13:22:19+00:00

The charge-control command v2/v3 is more featureful than v1, it additionally supports charge thresholds. The definitions were imported from ChromeOS EC commit 32870d602317 ("squirtle: modify motionsense rotation matrix") Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20240630-cros_ec-charge-control-v5-2-8f649d018c52@weissschuh.net Signed-off-by: Tzung-Bi Shih

platform/chrome: Add struct ec_response_get_next_event_v3

2024-06-05T02:30:00+00:00

Add struct ec_response_get_next_event_v3 to upgrade EC_CMD_GET_NEXT_EVENT to version 3. Signed-off-by: Daisuke Nojiri Link: https://lore.kernel.org/r/20240604170552.2517189-1-dnojiri@chromium.org Signed-off-by: Tzung-Bi Shih

platform/chrome: Update binary interface for EC-based watchdog

2024-02-01T11:49:25+00:00

Update structures and defines related to EC_CMD_HANG_DETECT to allow usage of new EC-based watchdog. Signed-off-by: Lukasz Majczak Reviewed-by: Guenter Roeck Acked-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20240126095721.782782-2-lma@chromium.org Signed-off-by: Lee Jones

media: cros-ec-cec: Get number of CEC ports from EC

2023-09-27T07:39:55+00:00

Add a new CEC port count host command and use it to query the number of CEC ports from the EC. If the host command is not supported then it must be old EC firmware which only supports one port, so fall back to assuming one port. This patch completes support for multiple ports in cros-ec-cec. Signed-off-by: Reka Norman Signed-off-by: Hans Verkuil

media: cros-ec-cec: Support receiving messages from multiple ports

2023-09-27T07:39:54+00:00

Currently, received messages are sent from the EC in the cec_message MKBP event. Since the size of ec_response_get_next_data_v1 is 16 bytes, which is also the maximum size of a CEC message, there is no space to add a port parameter. Increasing the size of ec_response_get_next_data_v1 is an option, but this would increase EC-kernel traffic for all MKBP event types. Instead, use an event to notify that data is ready, and add a new read command to read the data. For backwards compatibility with old EC firmware, continue to handle cec_message events as well. Signed-off-by: Reka Norman Signed-off-by: Hans Verkuil

media: cros-ec-cec: Support multiple ports in MKBP cec_events

2023-09-27T07:39:54+00:00

Use the top four bits of the cec_events MKBP event to store the port number. Signed-off-by: Reka Norman Signed-off-by: Hans Verkuil

media: cros-ec-cec: Support multiple ports in write command

2023-09-27T07:39:54+00:00

Add a v1 of the CEC write command which contains a port parameter. Check which versions of the write command the EC supports and use the highest supported version. If it only supports v0, check that there is only one port. With v0, the EC will assume all write commands are for port 0. Signed-off-by: Reka Norman Signed-off-by: Hans Verkuil

media: cros-ec-cec: Support multiple ports in set/get host commands

2023-09-27T07:39:54+00:00

Reuse the top four bits of the cmd field to specify the port number. The reason for doing this as opposed to adding a separate uint8_t field is it avoids the need to add new versions of these commands. The change is backwards compatible since these bits were previously always zero, so the default behaviour is to always operate on port 0. Signed-off-by: Reka Norman Signed-off-by: Hans Verkuil

media: cros-ec-cec: Manage an array of ports

2023-09-27T07:39:54+00:00

To support multiple CEC ports, change cros_ec_cec to contain an array of ports, each with their own CEC adapter, etc. For now, only create a single port and use that port everywhere, so there is no functional change. Support for multiple ports will be added in the following patches. Signed-off-by: Reka Norman Signed-off-by: Hans Verkuil

platform/chrome: Replace fake flexible arrays with flexible-array member

2023-04-24T05:35:11+00:00

Zero-length arrays as fake flexible arrays are deprecated and we are moving towards adopting C99 flexible-array members instead. Use the DECLARE_FLEX_ARRAY() helper macro to transform zero-length arrays in unions with flexible-array members. Address the following warning found with GCC-13 and -fstrict-flex-arrays=3 enabled: drivers/iio/accel/cros_ec_accel_legacy.c:66:46: warning: array subscript is outside array bounds of ‘struct ec_response_motion_sensor_data[0]’ [-Warray-bounds=] This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines on memcpy() and help us make progress towards globally enabling -fstrict-flex-arrays=3 [1]. Link: https://github.com/KSPP/linux/issues/21 Link: https://github.com/KSPP/linux/issues/193 Link: https://github.com/KSPP/linux/issues/262 Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1] Signed-off-by: Gustavo A. R. Silva Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/ZAZUGBmSLc5wg7AK@work