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[PATCH RESEND 01/13] mfd: cros_ec: Add helper for event notifier.

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From: Gwendal Grignou <gwendal@chromium.org>

Add cros_ec_get_event() entry point to retrieve event within functions
called by the notifier.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/platform/chrome/cros_ec_proto.c | 20 ++++++++++++++++++++
 include/linux/mfd/cros_ec.h             | 10 ++++++++++
 2 files changed, 30 insertions(+)

diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
index ed5dee7..7428c2b 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -494,3 +494,23 @@ int cros_ec_get_next_event(struct cros_ec_device *ec_dev)
 		return get_keyboard_state_event(ec_dev);
 }
 EXPORT_SYMBOL(cros_ec_get_next_event);
+
+u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev)
+{
+	u32 host_event;
+
+	BUG_ON(!ec_dev->mkbp_event_supported);
+
+	if (ec_dev->event_data.event_type != EC_MKBP_EVENT_HOST_EVENT)
+		return 0;
+
+	if (ec_dev->event_size != sizeof(host_event)) {
+		dev_warn(ec_dev->dev, "Invalid host event size\n");
+		return 0;
+	}
+
+	host_event = get_unaligned_le32(&ec_dev->event_data.data.host_event);
+
+	return host_event;
+}
+EXPORT_SYMBOL(cros_ec_get_host_event);
diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
index 28baee6..b61b2e0 100644
--- a/include/linux/mfd/cros_ec.h
+++ b/include/linux/mfd/cros_ec.h
@@ -300,6 +300,16 @@ int cros_ec_query_all(struct cros_ec_device *ec_dev);
  */
 int cros_ec_get_next_event(struct cros_ec_device *ec_dev);
 
+/**
+ * cros_ec_get_host_event - Return a mask of event set by the EC.
+ *
+ * When MKBP is supported, when the EC raises an interrupt,
+ * We collect the events raised and call the functions in the ec notifier.
+ *
+ * This function is a helper to know which events are raised.
+ */
+u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
+
 /* sysfs stuff */
 extern struct attribute_group cros_ec_attr_group;
 extern struct attribute_group cros_ec_lightbar_attr_group;
-- 
2.9.3

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Thread

[PATCH RESEND 00/13] platform/chrome: Add console debugfs, lpc and lightbar programming support Enric Balletbo i Serra <enric.balletbo@collabora.com> - 2017-05-16 18:20 +0200
  [PATCH RESEND 01/13] mfd: cros_ec: Add helper for event notifier. Enric Balletbo i Serra <enric.balletbo@collabora.com> - 2017-05-16 18:20 +0200
  [PATCH RESEND 09/13] platform/chrome: cros_ec_lpc: Add MKBP events support over ACPI Enric Balletbo i Serra <enric.balletbo@collabora.com> - 2017-05-16 18:20 +0200
  [PATCH RESEND 13/13] platform/chrome: cros_ec_lightbar - Avoid I2C xfer to EC during suspend Enric Balletbo i Serra <enric.balletbo@collabora.com> - 2017-05-16 18:20 +0200
  [PATCH RESEND 04/13] mfd: cros_ec: Add support for dumping panic information Enric Balletbo i Serra <enric.balletbo@collabora.com> - 2017-05-16 18:20 +0200
  [PATCH RESEND 05/13] platform/chrome: cros_ec_lpc: Add R/W helpers to LPC protocol variants Enric Balletbo i Serra <enric.balletbo@collabora.com> - 2017-05-16 18:20 +0200
    Re: [PATCH RESEND 05/13] platform/chrome: cros_ec_lpc: Add R/W  helpers to LPC protocol variants Lee Jones <lee.jones@linaro.org> - 2017-05-22 13:10 +0200

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