mfd: clsic: expose RAS interrupt sources to clsic-tacna children

Change-Id: I83fbd51cbe7553a8f7cc55d3f0643bac6db3245b
Signed-off-by: Simon Trimmer <[email protected]>

Author: simontrimmer

drivers/mfd/clsic/clsic-tacna.c

@@ -25,6 +25,28 @@ static struct mfd_cell clsic_tacna_devs[] = {
 	},
 };
 
+/*
+ * Each clsic-tacna device is associated with a register access service
+ * handler, delegate the IRQ handling to that RAS instance.
+ */
+int clsic_tacna_request_irq(struct tacna *tacna,
+			    unsigned int irq_id, const char *name,
+			    irq_handler_t handler, void *data)
+{
+	struct clsic_ras_struct *ras = dev_get_platdata(tacna->dev);
+
+	return clsic_ras_request_irq(ras, irq_id, name, handler, data);
+}
+EXPORT_SYMBOL_GPL(clsic_tacna_request_irq);
+
+void clsic_tacna_free_irq(struct tacna *tacna, unsigned int irq_id, void *data)
+{
+	struct clsic_ras_struct *ras = dev_get_platdata(tacna->dev);
+
+	clsic_ras_free_irq(ras, irq_id, data);
+}
+EXPORT_SYMBOL_GPL(clsic_tacna_free_irq);
+
 /*
  * Apply the default state of the pins specified as "active" in the device tree
  * on startup.

include/linux/mfd/clsic/clsic-tacna.h

@@ -0,0 +1,30 @@
+/*
+ * clsic-tacna.h -- CLSIC Tacna IRQ handling
+ *
+ * Copyright (C) 2015-2019 Cirrus Logic, Inc. and
+ *			   Cirrus Logic International Semiconductor Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef CIRRUS_CLSIC_TACNA_H
+#define CIRRUS_CLSIC_TACNA_H
+
+#include <linux/mfd/clsic/rassrv.h>
+
+/* Provide a mapping for clients to reference DSP2 IRQs */
+#define CLSIC_TACNA_IRQ_DSP2_0		CLSIC_RAS_IRQ_DSP2_0
+#define CLSIC_TACNA_IRQ_DSP2_1		CLSIC_RAS_IRQ_DSP2_1
+#define CLSIC_TACNA_IRQ_DSP2_2		CLSIC_RAS_IRQ_DSP2_2
+#define CLSIC_TACNA_IRQ_DSP2_3		CLSIC_RAS_IRQ_DSP2_3
+#define CLSIC_TACNA_IRQ_DSP2_COUNT	CLSIC_RAS_IRQ_DSP2_COUNT
+
+extern int clsic_tacna_request_irq(struct tacna *tacna,
+				   unsigned int irq_id, const char *name,
+				   irq_handler_t handler, void *data);
+
+extern void clsic_tacna_free_irq(struct tacna *tacna,
+				 unsigned int irq_id, void *data);
+#endif