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Add default value for `msg->result` so that it won't be garbage bytes
when the mock list is empty.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220720044754.4026295-3-tzungbi@kernel.org
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Merge CROS_KUNIT and CROS_EC_PROTO_KUNIT_TEST so that when they're built
as modules cros_kunit_util doesn't need to export the symbols.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220720044754.4026295-2-tzungbi@kernel.org
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drivers/platform/chrome/cros_kbd_led_backlight.c got a new build warning
when using the randconfig in [1]:
>>> warning: unused variable 'keyboard_led_drvdata_ec_pwm'
The warning happens when CONFIG_CROS_EC is set but CONFIG_OF is not set.
Reproduce:
- mkdir build_dir
- wget [1] -O build_dir/.config
- COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 \
O=build_dir ARCH=s390 SHELL=/bin/bash drivers/platform/chrome/
Fix the warning by using __maybe_unused. Also use IS_ENABLED() because
CROS_EC is a tristate.
[1]: https://download.01.org/0day-ci/archive/20220717/202207170538.MR39dw8m-lkp@intel.com/config
Fixes: 40f58143745e ("platform/chrome: cros_kbd_led_backlight: support EC PWM backend")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220718105047.2356542-1-tzungbi@kernel.org
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cros_ec_cmd() is a wrapper of cros_ec_cmd_xfer_status().
Add Kunit test for cros_ec_cmd().
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220622041040.202737-8-tzungbi@kernel.org
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cros_ec_get_sensor_count() gets number of MEMS sensors.
Add Kunit tests for cros_ec_get_sensor_count().
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220622041040.202737-7-tzungbi@kernel.org
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cros_ec_check_features() gets EC features if it hasn't had cache, and
checks whether the given EC_FEATURE_* is supported or not.
Add Kunit tests for cros_ec_check_features().
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220622041040.202737-6-tzungbi@kernel.org
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cros_ec_get_host_event() performs some sanity checks, parses
`ec_dev->event_data.data.host_event`, and returns bitmap of
EC_HOST_EVENT_*.
Add Kunit tests for cros_ec_get_host_event().
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220622041040.202737-5-tzungbi@kernel.org
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cros_ec_get_next_event() gets events from EC. It consists of 3
versions of event retrieval:
1. No MKBP event.
2. MKBP event version 0.
3. MKBP event version >0.
Add Kunit tests for cros_ec_get_next_event().
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220622041040.202737-4-tzungbi@kernel.org
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cros_ec_cmd_xfer_status() is the only exported function that calls
static function cros_ec_map_error().
Add Kunit test for cros_ec_map_error() through calling
cros_ec_cmd_xfer_status().
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220622041040.202737-3-tzungbi@kernel.org
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cros_ec_cmd_xfer_status() calls cros_ec_cmd_xfer() and cros_ec_map_error().
Given that there are already test cases for cros_ec_cmd_xfer(), only add
basic Kunit tests for cros_ec_cmd_xfer_status().
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220622041040.202737-2-tzungbi@kernel.org
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cros_ec_wait_until_complete() sends EC_CMD_GET_COMMS_STATUS which expects
to receive sizeof(struct ec_response_get_comms_status) from
cros_ec_xfer_command().
Return -EPROTO if cros_ec_xfer_command() returns 0.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-11-tzungbi@kernel.org
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cros_ec_wait_until_complete() sends EC_CMD_GET_COMMS_STATUS which expects
to receive sizeof(struct ec_response_get_comms_status) from
cros_ec_xfer_command().
Add Kunit test and expect to receive an error code when
cros_ec_xfer_command() returns 0.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-10-tzungbi@kernel.org
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While EC_COMMS_STATUS_PROCESSING flag is still on after it tries
EC_COMMAND_RETRIES times for sending EC_CMD_GET_COMMS_STATUS,
cros_ec_wait_until_complete() doesn't return an error code.
Return -EAGAIN in the case instead.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-9-tzungbi@kernel.org
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While EC_COMMS_STATUS_PROCESSING flag is still on after it tries
EC_COMMAND_RETRIES times for sending EC_CMD_GET_COMMS_STATUS,
cros_ec_wait_until_complete() doesn't return an error code.
Change the expectation to an error code.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-8-tzungbi@kernel.org
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EC returns EC_RES_IN_PROGRESS if the host command needs more time to
complete. Whenever receives the return code, cros_ec_send_command()
sends EC_CMD_GET_COMMS_STATUS to query the command status.
Separate cros_ec_wait_until_complete() from cros_ec_send_command().
It sends EC_CMD_GET_COMMS_STATUS and waits until the previous command
was completed, or encountered error, or timed out.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-7-tzungbi@kernel.org
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cros_ec_send_command() has extra logic to handle EC_RES_IN_PROGRESS.
Separate the command transfer part into cros_ec_xfer_command() so
that other functions can re-use it.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-6-tzungbi@kernel.org
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cros_ec_cmd_xfer() is the only exported function that calls static
function cros_ec_send_command().
Add Kunit tests for cros_ec_send_command() through calling
cros_ec_cmd_xfer().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-5-tzungbi@kernel.org
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cros_ec_cmd_xfer() transfers the given command and data if any. It
performs some sanity checks and calls cros_ec_send_command().
Add Kunit tests for cros_ec_cmd_xfer().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-4-tzungbi@kernel.org
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To be neat, add "cros_ec_" prefix to static function send_command().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-3-tzungbi@kernel.org
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Instead of using manually managed altmode structs, register the port's
altmodes with the Type-C framework. This facilitates matching them to
partner altmodes later.
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20220712210318.2671292-2-pmalani@chromium.org
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Rename "p_altmode" to "port_altmode" which is a less ambiguous name for
the port_altmode struct array.
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20220712210318.2671292-1-pmalani@chromium.org
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The typec_register_port() can fail with EPROBE_DEFER if the endpoint
node hasn't probed yet. In order to avoid spamming the log with errors
in that case, log using dev_err_probe().
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220712214554.545035-1-nfraprado@collabora.com
Signed-off-by: Prashant Malani <pmalani@chromium.org>
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Drop the redundant word 'the'.
Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220622061442.18242-1-jiangjian@cdjrlc.com
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The last resume result exposing logic in cros_ec_sleep_event()
incorrectly requires S0ix support, which doesn't work on ARM based
systems where S0ix doesn't exist. That's because cros_ec_sleep_event()
only reports the last resume result when the EC indicates the last sleep
event was an S0ix resume. On ARM systems, the last sleep event is always
S3 resume, but the EC can still detect sleep hang events in case some
other part of the AP is blocking sleep.
Always expose the last resume result if the EC supports it so that this
works on all devices regardless of S0ix support. This fixes sleep hang
detection on ARM based chromebooks like Trogdor.
Cc: Rajat Jain <rajatja@chromium.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Fixes: 7235560ac77a ("platform/chrome: Add support for v1 of host sleep event")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220614075726.2729987-1-swboyd@chromium.org
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There is a spelling mistake in a dev_dbg message. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220614064909.47804-1-colin.i.king@gmail.com
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cros_ec_get_host_event_wake_mask() expects to receive
sizeof(struct ec_response_host_event_mask) from send_command(). The
payload is valid only if the return value is positive.
Return -EPROTO if send_command() returns 0 in
cros_ec_get_host_event_wake_mask().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-22-tzungbi@kernel.org
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cros_ec_get_host_event_wake_mask() expects to receive
sizeof(struct ec_response_host_event_mask) from send_command().
The payload is valid only if the return value is positive.
Add Kunit tests for returning 0 from send_command() in
cros_ec_get_host_event_wake_mask().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-21-tzungbi@kernel.org
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cros_ec_get_host_event_wake_mask() used to return value from
send_command() which is number of bytes for input payload on success
(i.e. sizeof(struct ec_response_host_event_mask)).
However, the callers don't need to know how many bytes are available.
Don't return number of available bytes. Instead, return 0 on success;
otherwise, negative integers on error.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-20-tzungbi@kernel.org
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cros_ec_get_host_command_version_mask() expects to receive
sizeof(struct ec_response_get_cmd_versions) from send_command(). The
payload is valid only if the return value is positive.
Return -EPROTO if send_command() returns 0 in
cros_ec_get_host_command_version_mask().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-19-tzungbi@kernel.org
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cros_ec_get_host_command_version_mask() expects to receive
sizeof(struct ec_response_get_cmd_versions) from send_command().
The payload is valid only if the return value is positive.
Add Kunit tests for returning 0 from send_command() in
cros_ec_get_host_command_version_mask().
Note that because the 2 cros_ec_get_host_command_version_mask() use the
same `ver_mask`. cros_ec_proto_test_query_all_no_host_sleep_return0()
polluates the `ver_mask` and returns 0 on the second send_command() to
make sure the second cros_ec_get_host_command_version_mask() doesn't
take the garbage from the previous call.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-18-tzungbi@kernel.org
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cros_ec_get_host_command_version_mask() should check if EC wasn't happy
by checking `msg->result`.
Use cros_ec_map_error() and return the error code if any.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-17-tzungbi@kernel.org
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cros_ec_query_all() uses cros_ec_get_host_command_version_mask() to
query the supported MKBP version; cros_ec_get_host_command_version_mask()
uses send_command() for transferring the host command.
Returning >=0 from send_command() only denotes the transfer was success.
cros_ec_get_host_command_version_mask() should check if EC wasn't happy
by checking `msg->result`.
Add a Kunit test for returning error in `msg->result` in
cros_ec_get_host_command_version_mask(). For the case,
cros_ec_query_all() should find the EC device doesn't support MKBP.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-16-tzungbi@kernel.org
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cros_ec_get_host_command_version_mask() used to return value from
send_command() which is number of available bytes for input payload on
success (i.e. sizeof(struct ec_response_get_cmd_versions)).
However, the callers don't need to know how many bytes are available.
Don't return number of available bytes. Instead, return 0 on success;
otherwise, negative integers on error.
Also remove the unneeded `ver_mask` initialization as the callers should
take it only if cros_ec_get_host_command_version_mask() returns 0.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-15-tzungbi@kernel.org
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It wrongly showed the following message when it doesn't support MKBP:
"MKBP support version 4294967295".
Fix it.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-14-tzungbi@kernel.org
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cros_ec_get_proto_info_legacy() expects to receive
sizeof(struct ec_response_hello) from send_command(). The payload is
valid only if the return value is positive.
Return -EPROTO if send_command() returns 0 in
cros_ec_get_proto_info_legacy().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-13-tzungbi@kernel.org
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cros_ec_get_proto_info_legacy() expects to receive
sizeof(struct ec_response_hello) from send_command(). The payload is
valid only if the return value is positive.
Add a Kunit test for returning 0 from send_command() in
cros_ec_get_proto_info_legacy().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-12-tzungbi@kernel.org
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Rename cros_ec_host_command_proto_query_v2() to
cros_ec_get_proto_info_legacy() and make it responsible for setting
`ec_dev` fields for EC protocol v2.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-11-tzungbi@kernel.org
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cros_ec_get_proto_info() expects to receive
sizeof(struct ec_response_get_protocol_info) from send_command(). The
payload is valid only if the return value is positive.
Return -EPROTO if send_command() returns 0 in cros_ec_get_proto_info().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-10-tzungbi@kernel.org
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cros_ec_get_proto_info() expects to receive
sizeof(struct ec_response_get_protocol_info) from send_command(). The
payload is valid only if the return value is positive.
Add Kunit tests for returning 0 from send_command() in
cros_ec_get_proto_info().
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-9-tzungbi@kernel.org
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Rename cros_ec_host_command_proto_query() to cros_ec_get_proto_info()
and make it responsible for setting `ec_dev` fields according to the
response protocol info.
Also make cros_ec_get_host_event_wake_mask() allocate its own message
buffer. It was lucky that size of `struct ec_response_host_event_mask`
is less than `struct ec_response_get_protocol_info`. Thus, the buffer
wasn't overflow.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-8-tzungbi@kernel.org
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Use cros_ec_map_error() in cros_ec_get_host_event_wake_mask().
The behavior of cros_ec_get_host_event_wake_mask() slightly changed. It
is acceptable because the caller only needs it returns negative integers
for indicating errors. Especially, the EC_RES_INVALID_COMMAND still
maps to -EOPNOTSUPP.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-7-tzungbi@kernel.org
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send_command() already checks if `ec_dev->pkt_xfer` is NULL. Remove the
redundant check.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-6-tzungbi@kernel.org
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`din_size` is calculated from `ec_dev->max_response`.
`ec_dev->max_response` is further calculated from the protocol info.
To make it clear, assign `din_size` and `dout_size` from protocol info
directly.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-5-tzungbi@kernel.org
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Move passthru indexes for EC and PD devices to common header. Also use
them instead of literal constants.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-4-tzungbi@kernel.org
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cros_ec_query_all() sends multiple host commands to EC for querying
supported protocols and settings.
Add required mock for interacting with cros_ec_query_all() and Kunit
tests.
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-3-tzungbi@kernel.org
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EC PWM backend uses EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT and
EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT for setting and getting the brightness
respectively.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20220523090822.3035189-6-tzungbi@kernel.org
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For letting device tree based machines to use the driver, support OF match.
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20220523090822.3035189-5-tzungbi@kernel.org
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cros_kbd_led_backlight uses ACPI_KEYBOARD_BACKLIGHT_WRITE and
ACPI_KEYBOARD_BACKLIGHT_READ for setting and getting the brightness
respectively.
Separate ACPI operations for preparing the driver to support other
backends.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20220523090822.3035189-3-tzungbi@kernel.org
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To be neat and reduce conflict possibility, sort the headers
alphabetically.
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220523090822.3035189-2-tzungbi@kernel.org
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cros_ec_cmd() takes 2 size arguments. Update them to be of the more
appropriate type size_t.
Suggested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220606201825.763788-4-pmalani@chromium.org
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