1 // SPDX-License-Identifier: GPL-2.0-only
10  * Parts of this code are taken from linux/arch/arm/mach-omap/irq.c
20 #include <linux/platform_data/ams-delta-fiq.h>
24 #include <linux/soc/ti/omap1-io.h>
27 #include "ams-delta-fiq.h"
28 #include "board-ams-delta.h"
31 	.name	= "ams-delta-fiq"
40  * <linux/platform_data/ams-delta-fiq.h> for details of offsets.
65 		irq_num = d->irq;  in deferred_fiq()
71 			 * handle_simple_irq() that OMAP GPIO edge  in deferred_fiq()
75 			if (!WARN_ON_ONCE(!irq_chip->irq_unmask))  in deferred_fiq()
76 				irq_chip->irq_unmask(d);  in deferred_fiq()
91 	unsigned long val, offset;  in ams_delta_init_fiq()  local
95 	irq_chip = chip->irq.chip;  in ams_delta_init_fiq()
98 		       chip->label);  in ams_delta_init_fiq()
136 	fiqhandler_length = &qwerty_fiqin_end - &qwerty_fiqin_start;  in ams_delta_init_fiq()
156 	 * switch to edge triggered interrupt type manually.  in ams_delta_init_fiq()
158 	offset = IRQ_ILR0_REG_OFFSET +  in ams_delta_init_fiq()
159 			((INT_DEFERRED_FIQ - NR_IRQS_LEGACY) & 0x1f) * 0x4;  in ams_delta_init_fiq()
160 	val = omap_readl(DEFERRED_FIQ_IH_BASE + offset) & ~(1 << 1);  in ams_delta_init_fiq()
161 	omap_writel(val, DEFERRED_FIQ_IH_BASE + offset);  in ams_delta_init_fiq()
199 	offset = IRQ_ILR0_REG_OFFSET + (INT_GPIO_BANK1 - NR_IRQS_LEGACY) * 0x4;  in ams_delta_init_fiq()
200 	val = omap_readl(OMAP_IH1_BASE + offset) | 1;  in ams_delta_init_fiq()
201 	omap_writel(val, OMAP_IH1_BASE + offset);  in ams_delta_init_fiq()
204 	serio->resource[0].start = gpiod_to_irq(clk);  in ams_delta_init_fiq()
205 	serio->resource[0].end = serio->resource[0].start;  in ams_delta_init_fiq()
206 	serio->dev.platform_data = fiq_buffer;  in ams_delta_init_fiq()
212 	 * bad interaction with gpio-omap driver.  This is no longer needed  in ams_delta_init_fiq()
214 	 * edge interrupts.  in ams_delta_init_fiq()
217 	 * of that dependency on gpio-omap driver behavior.  in ams_delta_init_fiq()