Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 92 insertions, 0 deletions

diff --git a/drivers/net/ipa/ipa_power.h b/drivers/net/ipa/ipa_power.h
new file mode 100644
index 000000000..3a4c59ea1
--- /dev/null
+++ b/drivers/net/ipa/ipa_power.h
@@ -0,0 +1,92 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2018-2022 Linaro Ltd.
+ */
+#ifndef _IPA_POWER_H_
+#define _IPA_POWER_H_
+
+struct device;
+
+struct ipa;
+struct ipa_power_data;
+enum ipa_irq_id;
+
+/* IPA device power management function block */
+extern const struct dev_pm_ops ipa_pm_ops;
+
+/**
+ * ipa_core_clock_rate() - Return the current IPA core clock rate
+ * @ipa:	IPA structure
+ *
+ * Return: The current clock rate (in Hz), or 0.
+ */
+u32 ipa_core_clock_rate(struct ipa *ipa);
+
+/**
+ * ipa_power_modem_queue_stop() - Possibly stop the modem netdev TX queue
+ * @ipa:	IPA pointer
+ */
+void ipa_power_modem_queue_stop(struct ipa *ipa);
+
+/**
+ * ipa_power_modem_queue_wake() - Possibly wake the modem netdev TX queue
+ * @ipa:	IPA pointer
+ */
+void ipa_power_modem_queue_wake(struct ipa *ipa);
+
+/**
+ * ipa_power_modem_queue_active() - Report modem netdev TX queue active
+ * @ipa:	IPA pointer
+ */
+void ipa_power_modem_queue_active(struct ipa *ipa);
+
+/**
+ * ipa_power_retention() - Control register retention on power collapse
+ * @ipa:	IPA pointer
+ * @enable:	Whether retention should be enabled or disabled
+ */
+void ipa_power_retention(struct ipa *ipa, bool enable);
+
+/**
+ * ipa_power_suspend_handler() - Handler for SUSPEND IPA interrupts
+ * @ipa:	IPA pointer
+ * @irq_id:	IPA interrupt ID (unused)
+ *
+ * If an RX endpoint is suspended, and the IPA has a packet destined for
+ * that endpoint, the IPA generates a SUSPEND interrupt to inform the AP
+ * that it should resume the endpoint.
+ */
+void ipa_power_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id);
+
+/**
+ * ipa_power_setup() - Set up IPA power management
+ * @ipa:	IPA pointer
+ *
+ * Return:	0 if successful, or a negative error code
+ */
+int ipa_power_setup(struct ipa *ipa);
+
+/**
+ * ipa_power_teardown() - Inverse of ipa_power_setup()
+ * @ipa:	IPA pointer
+ */
+void ipa_power_teardown(struct ipa *ipa);
+
+/**
+ * ipa_power_init() - Initialize IPA power management
+ * @dev:	IPA device
+ * @data:	Clock configuration data
+ *
+ * Return:	A pointer to an ipa_power structure, or a pointer-coded error
+ */
+struct ipa_power *ipa_power_init(struct device *dev,
+				 const struct ipa_power_data *data);
+
+/**
+ * ipa_power_exit() - Inverse of ipa_power_init()
+ * @power:	IPA power pointer
+ */
+void ipa_power_exit(struct ipa_power *power);
+
+#endif /* _IPA_POWER_H_ */