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Date: Wed, 24 Apr 2019 16:29:09 -0700
From: Gwendal Grignou <gwendal@...omium.org>
To: enric.balletbo@...labora.com, bleung@...omium.org,
groeck@...omium.org, lee.jones@...aro.org
Cc: linux-kernel@...r.kernel.org,
Gwendal Grignou <gwendal@...omium.org>
Subject: [PATCH 21/30] mfd: cros_ec: Add Hibernate API
Add support for controlling hibernation of the Embedded Controller.
Signed-off-by: Gwendal Grignou <gwendal@...omium.org>
---
include/linux/mfd/cros_ec_commands.h | 129 ++++++++++++++++++++++++++-
1 file changed, 127 insertions(+), 2 deletions(-)
diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 88d08aa85738..7f98c6e63ad1 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -4045,6 +4045,40 @@ struct ec_params_dedicated_charger_limit {
uint16_t voltage_lim; /* in mV */
} __ec_align2;
+/*****************************************************************************/
+/* Hibernate/Deep Sleep Commands */
+
+/* Set the delay before going into hibernation. */
+#define EC_CMD_HIBERNATION_DELAY 0x00A8
+
+struct ec_params_hibernation_delay {
+ /*
+ * Seconds to wait in G3 before hibernate. Pass in 0 to read the
+ * current settings without changing them.
+ */
+ uint32_t seconds;
+} __ec_align4;
+
+struct ec_response_hibernation_delay {
+ /*
+ * The current time in seconds in which the system has been in the G3
+ * state. This value is reset if the EC transitions out of G3.
+ */
+ uint32_t time_g3;
+
+ /*
+ * The current time remaining in seconds until the EC should hibernate.
+ * This value is also reset if the EC transitions out of G3.
+ */
+ uint32_t time_remaining;
+
+ /*
+ * The current time in seconds that the EC should wait in G3 before
+ * hibernating.
+ */
+ uint32_t hibernate_delay;
+} __ec_align4;
+
/* Inform the EC when entering a sleep state */
#define EC_CMD_HOST_SLEEP_EVENT 0x00A9
@@ -4052,13 +4086,102 @@ enum host_sleep_event {
HOST_SLEEP_EVENT_S3_SUSPEND = 1,
HOST_SLEEP_EVENT_S3_RESUME = 2,
HOST_SLEEP_EVENT_S0IX_SUSPEND = 3,
- HOST_SLEEP_EVENT_S0IX_RESUME = 4
+ HOST_SLEEP_EVENT_S0IX_RESUME = 4,
+ /* S3 suspend with additional enabled wake sources */
+ HOST_SLEEP_EVENT_S3_WAKEABLE_SUSPEND = 5,
};
struct ec_params_host_sleep_event {
uint8_t sleep_event;
} __ec_align1;
+/*
+ * Use a default timeout value (CONFIG_SLEEP_TIMEOUT_MS) for detecting sleep
+ * transition failures
+ */
+#define EC_HOST_SLEEP_TIMEOUT_DEFAULT 0
+
+/* Disable timeout detection for this sleep transition */
+#define EC_HOST_SLEEP_TIMEOUT_INFINITE 0xFFFF
+
+struct ec_params_host_sleep_event_v1 {
+ /* The type of sleep being entered or exited. */
+ uint8_t sleep_event;
+
+ /* Padding */
+ uint8_t reserved;
+ union {
+ /* Parameters that apply for suspend messages. */
+ struct {
+ /*
+ * The timeout in milliseconds between when this message
+ * is received and when the EC will declare sleep
+ * transition failure if the sleep signal is not
+ * asserted.
+ */
+ uint16_t sleep_timeout_ms;
+ } suspend_params;
+
+ /* No parameters for non-suspend messages. */
+ };
+} __ec_align2;
+
+/* A timeout occurred when this bit is set */
+#define EC_HOST_RESUME_SLEEP_TIMEOUT 0x80000000
+
+/*
+ * The mask defining which bits correspond to the number of sleep transitions,
+ * as well as the maximum number of suspend line transitions that will be
+ * reported back to the host.
+ */
+#define EC_HOST_RESUME_SLEEP_TRANSITIONS_MASK 0x7FFFFFFF
+
+struct ec_response_host_sleep_event_v1 {
+ union {
+ /* Response fields that apply for resume messages. */
+ struct {
+ /*
+ * The number of sleep power signal transitions that
+ * occurred since the suspend message. The high bit
+ * indicates a timeout occurred.
+ */
+ uint32_t sleep_transitions;
+ } resume_response;
+
+ /* No response fields for non-resume messages. */
+ };
+} __ec_align4;
+
+/*****************************************************************************/
+/* Device events */
+#define EC_CMD_DEVICE_EVENT 0x00AA
+
+enum ec_device_event {
+ EC_DEVICE_EVENT_TRACKPAD,
+ EC_DEVICE_EVENT_DSP,
+ EC_DEVICE_EVENT_WIFI,
+};
+
+enum ec_device_event_param {
+ /* Get and clear pending device events */
+ EC_DEVICE_EVENT_PARAM_GET_CURRENT_EVENTS,
+ /* Get device event mask */
+ EC_DEVICE_EVENT_PARAM_GET_ENABLED_EVENTS,
+ /* Set device event mask */
+ EC_DEVICE_EVENT_PARAM_SET_ENABLED_EVENTS,
+};
+
+#define EC_DEVICE_EVENT_MASK(event_code) BIT(event_code % 32)
+
+struct ec_params_device_event {
+ uint32_t event_mask;
+ uint8_t param;
+} __ec_align_size1;
+
+struct ec_response_device_event {
+ uint32_t event_mask;
+} __ec_align4;
+
/*****************************************************************************/
/* Smart battery pass-through */
@@ -4304,12 +4427,14 @@ enum ec_reboot_cmd {
/* (command 3 was jump to RW-B) */
EC_REBOOT_COLD = 4, /* Cold-reboot */
EC_REBOOT_DISABLE_JUMP = 5, /* Disable jump until next reboot */
- EC_REBOOT_HIBERNATE = 6 /* Hibernate EC */
+ EC_REBOOT_HIBERNATE = 6, /* Hibernate EC */
+ EC_REBOOT_HIBERNATE_CLEAR_AP_OFF = 7, /* and clears AP_OFF flag */
};
/* Flags for ec_params_reboot_ec.reboot_flags */
#define EC_REBOOT_FLAG_RESERVED0 BIT(0) /* Was recovery request */
#define EC_REBOOT_FLAG_ON_AP_SHUTDOWN BIT(1) /* Reboot after AP shutdown */
+#define EC_REBOOT_FLAG_SWITCH_RW_SLOT BIT(2) /* Switch RW slot */
struct ec_params_reboot_ec {
uint8_t cmd; /* enum ec_reboot_cmd */
--
2.21.0.593.g511ec345e18-goog
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