drivers/gpio/gpio-eic-sprd.c

17 /* EIC registers definition */
54  * The digital-chip EIC controller can support maximum 3 banks, and each bank
64  * The Spreadtrum EIC (external interrupt controller) can be used only in
67  * The Spreadtrum digital-chip EIC controller contains 4 sub-modules:
68  * debounce EIC, latch EIC, async EIC and sync EIC,
70  * The debounce EIC is used to capture the input signals' stable status
75  * The latch EIC is used to latch some special power down signals and
76  * generate interrupts, since the latch EIC does not depend on the APB clock
79  * The async EIC uses a 32k clock to capture the short signals (microsecond
82  * The EIC-sync is similar with GPIO's input function, which is a synchronized
114 	"eic-debounce", "eic-latch", "eic-async",
115 	"eic-sync",
259 		dev_err(chip->parent, "Unsupported EIC type.\n");  in sprd_eic_irq_mask()
288 		dev_err(chip->parent, "Unsupported EIC type.\n");  in sprd_eic_irq_unmask()
312 		dev_err(chip->parent, "Unsupported EIC type.\n");  in sprd_eic_irq_ack()
469 		dev_err(chip->parent, "Unsupported EIC type.\n");  in sprd_eic_irq_set_type()
485 	 * The debounce EIC and latch EIC can only support level trigger, so we  in sprd_eic_toggle_trigger()
517 		dev_warn(chip->parent, "EIC level was changed.\n");  in sprd_eic_toggle_trigger()
552 			dev_err(chip->parent, "Unsupported EIC type.\n");  in sprd_eic_handle_one_type()
574 	 * Since the digital-chip EIC 4 sub-modules (debounce, latch, async  in sprd_eic_irq_handler()
576 	 * them to let them check if there are EIC interrupts were triggered.  in sprd_eic_irq_handler()
594 	.name		= "sprd-eic",
639 		 * We can have maximum 3 banks EICs, and each EIC has  in sprd_eic_probe()
641 		 * have one bank EIC, thus base[1] and base[2] can be  in sprd_eic_probe()
704 		.compatible = "sprd,sc9860-eic-debounce",
708 		.compatible = "sprd,sc9860-eic-latch",
712 		.compatible = "sprd,sc9860-eic-async",
716 		.compatible = "sprd,sc9860-eic-sync",
728 		.name = "sprd-eic",
735 MODULE_DESCRIPTION("Spreadtrum EIC driver");