Lines Matching +full:gpio +full:- +full:restart

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  *  linux/arch/arm/mach-omap1/ams-delta-fiq-handler.S
14 #include <linux/platform_data/ams-delta-fiq.h>
15 #include <linux/platform_data/gpio-omap.h>
16 #include <linux/soc/ti/omap1-io.h>
22 #include "ams-delta-fiq.h"
23 #include "board-ams-delta.h"
27  * OMAP1510 GPIO related symbol copied from arch/arm/mach-omap1/gpio15xx.c.
32 /* GPIO register bitmasks */
79  * r8  - temporary
80  * r9  - the driver buffer
81  * r10 - temporary
82  * r11 - interrupts mask
83  * r12 - base pointers
84  * r13 - interrupts status
99 	bics r13, r13, r11			@ clear masked - any left?
100 	beq exit				@ none - spurious FIQ? exit
107 	cmp r10, #(INT_GPIO_BANK1 - NR_IRQS_LEGACY)	@ is it GPIO interrupt?
108 	beq gpio				@ yes - process it
119 gpio:	@ GPIO bank interrupt handler  label
120 	ldr r12, omap1510_gpio_base		@ set base pointer to GPIO bank
122 	ldr r11, [r12, #OMAP1510_GPIO_INT_MASK]	@ fetch GPIO interrupts mask
123 restart:  label
125 	bics r13, r13, r11			@ clear masked - any left?
126 	beq exit				@ no - spurious interrupt? exit
133 	ands r10, r13, #KEYBRD_CLK_MASK		@ extract keyboard status - set?
134 	beq hksw				@ no - try next source
144 	ldr r8, [r12, #OMAP1510_GPIO_DATA_INPUT]	@ fetch GPIO input
148 	bne data				@ no - go to data processing
150 	ands r8, r8, #KEYBRD_DATA_MASK		@ check start bit - detected?
151 	beq hksw				@ no - try next source
160 	@ Mask other GPIO line interrupts till key done
165 	b restart				@ restart
169 	@ r8 still contains GPIO input bits
171 	ldreq r8, [r9, #BUF_KEY]		@ yes - fetch collected so far,
177 	strne r10, [r9, #BUF_MASK]		@ not yet - store the mask
178 	bne restart				@ and restart
183 	@ Key done - restore interrupt mask
192 	beq hksw				@ yes - key lost, next source
200 	moveq r10, #0				@ yes - rewind to buffer start
218 	beq mdm					@ no - try next source
235 	beq irq					@ no - check for next interrupt
253 	ldr r12, omap1510_gpio_base		@ set pointer back to GPIO bank
254 	b restart				@ check for next GPIO interrupt
273 .if (qwerty_fiqin_end - qwerty_fiqin_start) > (0x200 - 0x1c)