--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Interrupt support for Cirrus Logic Madera codecs
+ *
+ * Copyright (C) 2015-2018 Cirrus Logic, Inc. and
+ * Cirrus Logic International Semiconductor Ltd.
+ */
+
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
+#include <linux/irqchip/irq-madera.h>
+#include <linux/mfd/madera/core.h>
+#include <linux/mfd/madera/pdata.h>
+#include <linux/mfd/madera/registers.h>
+
+#define MADERA_IRQ(_irq, _reg) \
+ [MADERA_IRQ_ ## _irq] = { \
+ .reg_offset = (_reg) - MADERA_IRQ1_STATUS_2, \
+ .mask = MADERA_ ## _irq ## _EINT1 \
+ }
+
+/* Mappings are the same for all Madera codecs */
+static const struct regmap_irq madera_irqs[MADERA_NUM_IRQ] = {
+ MADERA_IRQ(FLL1_LOCK, MADERA_IRQ1_STATUS_2),
+ MADERA_IRQ(FLL2_LOCK, MADERA_IRQ1_STATUS_2),
+ MADERA_IRQ(FLL3_LOCK, MADERA_IRQ1_STATUS_2),
+ MADERA_IRQ(FLLAO_LOCK, MADERA_IRQ1_STATUS_2),
+
+ MADERA_IRQ(MICDET1, MADERA_IRQ1_STATUS_6),
+ MADERA_IRQ(MICDET2, MADERA_IRQ1_STATUS_6),
+ MADERA_IRQ(HPDET, MADERA_IRQ1_STATUS_6),
+
+ MADERA_IRQ(MICD_CLAMP_RISE, MADERA_IRQ1_STATUS_7),
+ MADERA_IRQ(MICD_CLAMP_FALL, MADERA_IRQ1_STATUS_7),
+ MADERA_IRQ(JD1_RISE, MADERA_IRQ1_STATUS_7),
+ MADERA_IRQ(JD1_FALL, MADERA_IRQ1_STATUS_7),
+
+ MADERA_IRQ(ASRC2_IN1_LOCK, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(ASRC2_IN2_LOCK, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(ASRC1_IN1_LOCK, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(ASRC1_IN2_LOCK, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(DRC2_SIG_DET, MADERA_IRQ1_STATUS_9),
+ MADERA_IRQ(DRC1_SIG_DET, MADERA_IRQ1_STATUS_9),
+
+ MADERA_IRQ(DSP_IRQ1, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ2, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ3, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ4, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ5, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ6, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ7, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ8, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ9, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ10, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ11, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ12, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ13, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ14, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ15, MADERA_IRQ1_STATUS_11),
+ MADERA_IRQ(DSP_IRQ16, MADERA_IRQ1_STATUS_11),
+
+ MADERA_IRQ(HP3R_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP3L_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP2R_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP2L_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP1R_SC, MADERA_IRQ1_STATUS_12),
+ MADERA_IRQ(HP1L_SC, MADERA_IRQ1_STATUS_12),
+
+ MADERA_IRQ(SPK_OVERHEAT_WARN, MADERA_IRQ1_STATUS_15),
+ MADERA_IRQ(SPK_OVERHEAT, MADERA_IRQ1_STATUS_15),
+
+ MADERA_IRQ(DSP1_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP2_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP3_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP4_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP5_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP6_BUS_ERR, MADERA_IRQ1_STATUS_33),
+ MADERA_IRQ(DSP7_BUS_ERR, MADERA_IRQ1_STATUS_33),
+};
+
+static const struct regmap_irq_chip madera_irq_chip = {
+ .name = "madera IRQ",
+ .status_base = MADERA_IRQ1_STATUS_2,
+ .mask_base = MADERA_IRQ1_MASK_2,
+ .ack_base = MADERA_IRQ1_STATUS_2,
+ .runtime_pm = true,
+ .num_regs = 32,
+ .irqs = madera_irqs,
+ .num_irqs = ARRAY_SIZE(madera_irqs),
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int madera_suspend(struct device *dev)
+{
+ struct madera *madera = dev_get_drvdata(dev->parent);
+
+ dev_dbg(madera->irq_dev, "Suspend, disabling IRQ\n");
+
+ /*
+ * A runtime resume would be needed to access the chip interrupt
+ * controller but runtime pm doesn't function during suspend.
+ * Temporarily disable interrupts until we reach suspend_noirq state.
+ */
+ disable_irq(madera->irq);
+
+ return 0;
+}
+
+static int madera_suspend_noirq(struct device *dev)
+{
+ struct madera *madera = dev_get_drvdata(dev->parent);
+
+ dev_dbg(madera->irq_dev, "No IRQ suspend, reenabling IRQ\n");
+
+ /* Re-enable interrupts to service wakeup interrupts from the chip */
+ enable_irq(madera->irq);
+
+ return 0;
+}
+
+static int madera_resume_noirq(struct device *dev)
+{
+ struct madera *madera = dev_get_drvdata(dev->parent);
+
+ dev_dbg(madera->irq_dev, "No IRQ resume, disabling IRQ\n");
+
+ /*
+ * We can't handle interrupts until runtime pm is available again.
+ * Disable them temporarily.
+ */
+ disable_irq(madera->irq);
+
+ return 0;
+}
+
+static int madera_resume(struct device *dev)
+{
+ struct madera *madera = dev_get_drvdata(dev->parent);
+
+ dev_dbg(madera->irq_dev, "Resume, reenabling IRQ\n");
+
+ /* Interrupts can now be handled */
+ enable_irq(madera->irq);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops madera_irq_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(madera_suspend, madera_resume)
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(madera_suspend_noirq,
+ madera_resume_noirq)
+};
+
+static int madera_irq_probe(struct platform_device *pdev)
+{
+ struct madera *madera = dev_get_drvdata(pdev->dev.parent);
+ struct irq_data *irq_data;
+ unsigned int irq_flags = 0;
+ int ret;
+
+ dev_dbg(&pdev->dev, "probe\n");
+
+ /*
+ * Read the flags from the interrupt controller if not specified
+ * by pdata
+ */
+ irq_flags = madera->pdata.irq_flags;
+ if (!irq_flags) {
+ irq_data = irq_get_irq_data(madera->irq);
+ if (!irq_data) {
+ dev_err(&pdev->dev, "Invalid IRQ: %d\n", madera->irq);
+ return -EINVAL;
+ }
+
+ irq_flags = irqd_get_trigger_type(irq_data);
+
+ /* Codec defaults to trigger low, use this if no flags given */
+ if (irq_flags == IRQ_TYPE_NONE)
+ irq_flags = IRQF_TRIGGER_LOW;
+ }
+
+ if (irq_flags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
+ dev_err(&pdev->dev, "Host interrupt not level-triggered\n");
+ return -EINVAL;
+ }
+
+ /*
+ * The silicon always starts at active-low, check if we need to
+ * switch to active-high.
+ */
+ if (irq_flags & IRQF_TRIGGER_HIGH) {
+ ret = regmap_update_bits(madera->regmap, MADERA_IRQ1_CTRL,
+ MADERA_IRQ_POL_MASK, 0);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to set IRQ polarity: %d\n", ret);
+ return ret;
+ }
+ }
+
+ /*
+ * NOTE: regmap registers this against the OF node of the parent of
+ * the regmap - that is, against the mfd driver
+ */
+ ret = regmap_add_irq_chip(madera->regmap, madera->irq, IRQF_ONESHOT, 0,
+ &madera_irq_chip, &madera->irq_data);
+ if (ret) {
+ dev_err(&pdev->dev, "add_irq_chip failed: %d\n", ret);
+ return ret;
+ }
+
+ /* Save dev in parent MFD struct so it is accessible to siblings */
+ madera->irq_dev = &pdev->dev;
+
+ return 0;
+}
+
+static int madera_irq_remove(struct platform_device *pdev)
+{
+ struct madera *madera = dev_get_drvdata(pdev->dev.parent);
+
+ /*
+ * The IRQ is disabled by the parent MFD driver before
+ * it starts cleaning up all child drivers
+ */
+ madera->irq_dev = NULL;
+ regmap_del_irq_chip(madera->irq, madera->irq_data);
+
+ return 0;
+}
+
+static struct platform_driver madera_irq_driver = {
+ .probe = &madera_irq_probe,
+ .remove = &madera_irq_remove,
+ .driver = {
+ .name = "madera-irq",
+ .pm = &madera_irq_pm_ops,
+ }
+};
+module_platform_driver(madera_irq_driver);
+
+MODULE_SOFTDEP("pre: madera");
+MODULE_DESCRIPTION("Madera IRQ driver");
+MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Interrupt support for Cirrus Logic Madera codecs
+ *
+ * Copyright (C) 2016-2018 Cirrus Logic, Inc. and
+ * Cirrus Logic International Semiconductor Ltd.
+ */
+
+#ifndef IRQCHIP_MADERA_H
+#define IRQCHIP_MADERA_H
+
+#include <linux/interrupt.h>
+#include <linux/mfd/madera/core.h>
+
+#define MADERA_IRQ_FLL1_LOCK 0
+#define MADERA_IRQ_FLL2_LOCK 1
+#define MADERA_IRQ_FLL3_LOCK 2
+#define MADERA_IRQ_FLLAO_LOCK 3
+#define MADERA_IRQ_CLK_SYS_ERR 4
+#define MADERA_IRQ_CLK_ASYNC_ERR 5
+#define MADERA_IRQ_CLK_DSP_ERR 6
+#define MADERA_IRQ_HPDET 7
+#define MADERA_IRQ_MICDET1 8
+#define MADERA_IRQ_MICDET2 9
+#define MADERA_IRQ_JD1_RISE 10
+#define MADERA_IRQ_JD1_FALL 11
+#define MADERA_IRQ_JD2_RISE 12
+#define MADERA_IRQ_JD2_FALL 13
+#define MADERA_IRQ_MICD_CLAMP_RISE 14
+#define MADERA_IRQ_MICD_CLAMP_FALL 15
+#define MADERA_IRQ_DRC2_SIG_DET 16
+#define MADERA_IRQ_DRC1_SIG_DET 17
+#define MADERA_IRQ_ASRC1_IN1_LOCK 18
+#define MADERA_IRQ_ASRC1_IN2_LOCK 19
+#define MADERA_IRQ_ASRC2_IN1_LOCK 20
+#define MADERA_IRQ_ASRC2_IN2_LOCK 21
+#define MADERA_IRQ_DSP_IRQ1 22
+#define MADERA_IRQ_DSP_IRQ2 23
+#define MADERA_IRQ_DSP_IRQ3 24
+#define MADERA_IRQ_DSP_IRQ4 25
+#define MADERA_IRQ_DSP_IRQ5 26
+#define MADERA_IRQ_DSP_IRQ6 27
+#define MADERA_IRQ_DSP_IRQ7 28
+#define MADERA_IRQ_DSP_IRQ8 29
+#define MADERA_IRQ_DSP_IRQ9 30
+#define MADERA_IRQ_DSP_IRQ10 31
+#define MADERA_IRQ_DSP_IRQ11 32
+#define MADERA_IRQ_DSP_IRQ12 33
+#define MADERA_IRQ_DSP_IRQ13 34
+#define MADERA_IRQ_DSP_IRQ14 35
+#define MADERA_IRQ_DSP_IRQ15 36
+#define MADERA_IRQ_DSP_IRQ16 37
+#define MADERA_IRQ_HP1L_SC 38
+#define MADERA_IRQ_HP1R_SC 39
+#define MADERA_IRQ_HP2L_SC 40
+#define MADERA_IRQ_HP2R_SC 41
+#define MADERA_IRQ_HP3L_SC 42
+#define MADERA_IRQ_HP3R_SC 43
+#define MADERA_IRQ_SPKOUTL_SC 44
+#define MADERA_IRQ_SPKOUTR_SC 45
+#define MADERA_IRQ_HP1L_ENABLE_DONE 46
+#define MADERA_IRQ_HP1R_ENABLE_DONE 47
+#define MADERA_IRQ_HP2L_ENABLE_DONE 48
+#define MADERA_IRQ_HP2R_ENABLE_DONE 49
+#define MADERA_IRQ_HP3L_ENABLE_DONE 50
+#define MADERA_IRQ_HP3R_ENABLE_DONE 51
+#define MADERA_IRQ_SPKOUTL_ENABLE_DONE 52
+#define MADERA_IRQ_SPKOUTR_ENABLE_DONE 53
+#define MADERA_IRQ_SPK_SHUTDOWN 54
+#define MADERA_IRQ_SPK_OVERHEAT 55
+#define MADERA_IRQ_SPK_OVERHEAT_WARN 56
+#define MADERA_IRQ_GPIO1 57
+#define MADERA_IRQ_GPIO2 58
+#define MADERA_IRQ_GPIO3 59
+#define MADERA_IRQ_GPIO4 60
+#define MADERA_IRQ_GPIO5 61
+#define MADERA_IRQ_GPIO6 62
+#define MADERA_IRQ_GPIO7 63
+#define MADERA_IRQ_GPIO8 64
+#define MADERA_IRQ_DSP1_BUS_ERR 65
+#define MADERA_IRQ_DSP2_BUS_ERR 66
+#define MADERA_IRQ_DSP3_BUS_ERR 67
+#define MADERA_IRQ_DSP4_BUS_ERR 68
+#define MADERA_IRQ_DSP5_BUS_ERR 69
+#define MADERA_IRQ_DSP6_BUS_ERR 70
+#define MADERA_IRQ_DSP7_BUS_ERR 71
+
+#define MADERA_NUM_IRQ 72
+
+/*
+ * These wrapper functions are for use by other child drivers of the
+ * same parent MFD.
+ */
+static inline int madera_get_irq_mapping(struct madera *madera, int irq)
+{
+ if (!madera->irq_dev)
+ return -ENODEV;
+
+ return regmap_irq_get_virq(madera->irq_data, irq);
+}
+
+static inline int madera_request_irq(struct madera *madera, int irq,
+ const char *name,
+ irq_handler_t handler, void *data)
+{
+ irq = madera_get_irq_mapping(madera, irq);
+ if (irq < 0)
+ return irq;
+
+ return request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT, name,
+ data);
+}
+
+static inline void madera_free_irq(struct madera *madera, int irq, void *data)
+{
+ irq = madera_get_irq_mapping(madera, irq);
+ if (irq < 0)
+ return;
+
+ free_irq(irq, data);
+}
+
+static inline int madera_set_irq_wake(struct madera *madera, int irq, int on)
+{
+ irq = madera_get_irq_mapping(madera, irq);
+ if (irq < 0)
+ return irq;
+
+ return irq_set_irq_wake(irq, on);
+}
+
+#endif
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