Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Interrupt support for Cirrus Logic Madera codecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2015-2018 Cirrus Logic, Inc. and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *                         Cirrus Logic International Semiconductor Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/irqdomain.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/of_irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/irqchip/irq-madera.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/mfd/madera/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/mfd/madera/pdata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/mfd/madera/registers.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define MADERA_IRQ(_irq, _reg)					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	[MADERA_IRQ_ ## _irq] = {				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 		.reg_offset = (_reg) - MADERA_IRQ1_STATUS_2,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 		.mask = MADERA_ ## _irq ## _EINT1		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) /* Mappings are the same for all Madera codecs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) static const struct regmap_irq madera_irqs[MADERA_NUM_IRQ] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	MADERA_IRQ(FLL1_LOCK,		MADERA_IRQ1_STATUS_2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	MADERA_IRQ(FLL2_LOCK,		MADERA_IRQ1_STATUS_2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	MADERA_IRQ(FLL3_LOCK,		MADERA_IRQ1_STATUS_2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	MADERA_IRQ(FLLAO_LOCK,		MADERA_IRQ1_STATUS_2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	MADERA_IRQ(MICDET1,		MADERA_IRQ1_STATUS_6),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	MADERA_IRQ(MICDET2,		MADERA_IRQ1_STATUS_6),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	MADERA_IRQ(HPDET,		MADERA_IRQ1_STATUS_6),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	MADERA_IRQ(MICD_CLAMP_RISE,	MADERA_IRQ1_STATUS_7),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	MADERA_IRQ(MICD_CLAMP_FALL,	MADERA_IRQ1_STATUS_7),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	MADERA_IRQ(JD1_RISE,		MADERA_IRQ1_STATUS_7),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	MADERA_IRQ(JD1_FALL,		MADERA_IRQ1_STATUS_7),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	MADERA_IRQ(ASRC2_IN1_LOCK,	MADERA_IRQ1_STATUS_9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	MADERA_IRQ(ASRC2_IN2_LOCK,	MADERA_IRQ1_STATUS_9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	MADERA_IRQ(ASRC1_IN1_LOCK,	MADERA_IRQ1_STATUS_9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	MADERA_IRQ(ASRC1_IN2_LOCK,	MADERA_IRQ1_STATUS_9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	MADERA_IRQ(DRC2_SIG_DET,	MADERA_IRQ1_STATUS_9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	MADERA_IRQ(DRC1_SIG_DET,	MADERA_IRQ1_STATUS_9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	MADERA_IRQ(DSP_IRQ1,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	MADERA_IRQ(DSP_IRQ2,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	MADERA_IRQ(DSP_IRQ3,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	MADERA_IRQ(DSP_IRQ4,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	MADERA_IRQ(DSP_IRQ5,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	MADERA_IRQ(DSP_IRQ6,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	MADERA_IRQ(DSP_IRQ7,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	MADERA_IRQ(DSP_IRQ8,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	MADERA_IRQ(DSP_IRQ9,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	MADERA_IRQ(DSP_IRQ10,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	MADERA_IRQ(DSP_IRQ11,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	MADERA_IRQ(DSP_IRQ12,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	MADERA_IRQ(DSP_IRQ13,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	MADERA_IRQ(DSP_IRQ14,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	MADERA_IRQ(DSP_IRQ15,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	MADERA_IRQ(DSP_IRQ16,		MADERA_IRQ1_STATUS_11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	MADERA_IRQ(HP3R_SC,		MADERA_IRQ1_STATUS_12),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	MADERA_IRQ(HP3L_SC,		MADERA_IRQ1_STATUS_12),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	MADERA_IRQ(HP2R_SC,		MADERA_IRQ1_STATUS_12),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	MADERA_IRQ(HP2L_SC,		MADERA_IRQ1_STATUS_12),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	MADERA_IRQ(HP1R_SC,		MADERA_IRQ1_STATUS_12),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	MADERA_IRQ(HP1L_SC,		MADERA_IRQ1_STATUS_12),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	MADERA_IRQ(SPK_OVERHEAT_WARN,	MADERA_IRQ1_STATUS_15),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	MADERA_IRQ(SPK_OVERHEAT,	MADERA_IRQ1_STATUS_15),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	MADERA_IRQ(DSP1_BUS_ERR,	MADERA_IRQ1_STATUS_33),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	MADERA_IRQ(DSP2_BUS_ERR,	MADERA_IRQ1_STATUS_33),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	MADERA_IRQ(DSP3_BUS_ERR,	MADERA_IRQ1_STATUS_33),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	MADERA_IRQ(DSP4_BUS_ERR,	MADERA_IRQ1_STATUS_33),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	MADERA_IRQ(DSP5_BUS_ERR,	MADERA_IRQ1_STATUS_33),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	MADERA_IRQ(DSP6_BUS_ERR,	MADERA_IRQ1_STATUS_33),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	MADERA_IRQ(DSP7_BUS_ERR,	MADERA_IRQ1_STATUS_33),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) static const struct regmap_irq_chip madera_irq_chip = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	.name		= "madera IRQ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	.status_base	= MADERA_IRQ1_STATUS_2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	.mask_base	= MADERA_IRQ1_MASK_2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	.ack_base	= MADERA_IRQ1_STATUS_2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	.runtime_pm	= true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	.num_regs	= 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	.irqs		= madera_irqs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	.num_irqs	= ARRAY_SIZE(madera_irqs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static int madera_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	struct madera *madera = dev_get_drvdata(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	dev_dbg(madera->irq_dev, "Suspend, disabling IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	 * A runtime resume would be needed to access the chip interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	 * controller but runtime pm doesn't function during suspend.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	 * Temporarily disable interrupts until we reach suspend_noirq state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	disable_irq(madera->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static int madera_suspend_noirq(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	struct madera *madera = dev_get_drvdata(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	dev_dbg(madera->irq_dev, "No IRQ suspend, reenabling IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	/* Re-enable interrupts to service wakeup interrupts from the chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	enable_irq(madera->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static int madera_resume_noirq(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	struct madera *madera = dev_get_drvdata(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	dev_dbg(madera->irq_dev, "No IRQ resume, disabling IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	 * We can't handle interrupts until runtime pm is available again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	 * Disable them temporarily.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	disable_irq(madera->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static int madera_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	struct madera *madera = dev_get_drvdata(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	dev_dbg(madera->irq_dev, "Resume, reenabling IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	/* Interrupts can now be handled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	enable_irq(madera->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static const struct dev_pm_ops madera_irq_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	SET_SYSTEM_SLEEP_PM_OPS(madera_suspend, madera_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(madera_suspend_noirq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 				      madera_resume_noirq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static int madera_irq_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	struct madera *madera = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	struct irq_data *irq_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	unsigned int irq_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	dev_dbg(&pdev->dev, "probe\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	 * Read the flags from the interrupt controller if not specified
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	 * by pdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	irq_flags = madera->pdata.irq_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	if (!irq_flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		irq_data = irq_get_irq_data(madera->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		if (!irq_data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 			dev_err(&pdev->dev, "Invalid IRQ: %d\n", madera->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		irq_flags = irqd_get_trigger_type(irq_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		/* Codec defaults to trigger low, use this if no flags given */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		if (irq_flags == IRQ_TYPE_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 			irq_flags = IRQF_TRIGGER_LOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	if (irq_flags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		dev_err(&pdev->dev, "Host interrupt not level-triggered\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	 * The silicon always starts at active-low, check if we need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	 * switch to active-high.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	if (irq_flags & IRQF_TRIGGER_HIGH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		ret = regmap_update_bits(madera->regmap, MADERA_IRQ1_CTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 					 MADERA_IRQ_POL_MASK, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 				"Failed to set IRQ polarity: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	 * NOTE: regmap registers this against the OF node of the parent of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	 * the regmap - that is, against the mfd driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	ret = regmap_add_irq_chip(madera->regmap, madera->irq, IRQF_ONESHOT, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 				  &madera_irq_chip, &madera->irq_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		dev_err(&pdev->dev, "add_irq_chip failed: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	/* Save dev in parent MFD struct so it is accessible to siblings */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	madera->irq_dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int madera_irq_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	struct madera *madera = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	 * The IRQ is disabled by the parent MFD driver before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	 * it starts cleaning up all child drivers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	madera->irq_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	regmap_del_irq_chip(madera->irq, madera->irq_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) static struct platform_driver madera_irq_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	.probe	= &madera_irq_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	.remove = &madera_irq_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		.name	= "madera-irq",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		.pm	= &madera_irq_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) module_platform_driver(madera_irq_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) MODULE_SOFTDEP("pre: madera");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) MODULE_DESCRIPTION("Madera IRQ driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) MODULE_LICENSE("GPL v2");