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Subject[PATCH 02/13] mfd: cros_ec: Add EC console read structures definitions
Date
From: Nicolas Boichat <drinkcat@chromium.org>

ec_params_console_read_v1 is used to capture EC logs from kernel,
and ec_params_get_cmd_versions_v1 is used to probe whether EC
supports that command.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---
include/linux/mfd/cros_ec_commands.h | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index f1ef638..3497e1a 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -625,6 +625,10 @@ struct ec_params_get_cmd_versions {
uint8_t cmd; /* Command to check */
} __packed;

+struct ec_params_get_cmd_versions_v1 {
+ uint16_t cmd; /* Command to check */
+} __packed;
+
struct ec_response_get_cmd_versions {
/*
* Mask of supported versions; use EC_VER_MASK() to compare with a
@@ -2281,13 +2285,28 @@ struct ec_params_charge_control {
#define EC_CMD_CONSOLE_SNAPSHOT 0x97

/*
- * Read next chunk of data from saved snapshot.
+ * Read data from the saved snapshot. If the subcmd parameter is
+ * CONSOLE_READ_NEXT, this will return data starting from the beginning of
+ * the latest snapshot. If it is CONSOLE_READ_RECENT, it will start from the
+ * end of the previous snapshot.
+ *
+ * The params are only looked at in version >= 1 of this command. Prior
+ * versions will just default to CONSOLE_READ_NEXT behavior.
*
* Response is null-terminated string. Empty string, if there is no more
* remaining output.
*/
#define EC_CMD_CONSOLE_READ 0x98

+enum ec_console_read_subcmd {
+ CONSOLE_READ_NEXT = 0,
+ CONSOLE_READ_RECENT
+};
+
+struct ec_params_console_read_v1 {
+ uint8_t subcmd; /* enum ec_console_read_subcmd */
+} __packed;
+
/*****************************************************************************/

/*
--
2.9.3
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