drivers/gpio/gpio-aspeed-sgpio.c

10 #include <linux/gpio/driver.h>
104 static void __iomem *bank_reg(struct aspeed_sgpio *gpio,
110 		return gpio->base + bank->val_regs + GPIO_VAL_VALUE;
112 		return gpio->base + bank->rdata_reg;
114 		return gpio->base + bank->irq_regs + GPIO_IRQ_ENABLE;
116 		return gpio->base + bank->irq_regs + GPIO_IRQ_TYPE0;
118 		return gpio->base + bank->irq_regs + GPIO_IRQ_TYPE1;
120 		return gpio->base + bank->irq_regs + GPIO_IRQ_TYPE2;
122 		return gpio->base + bank->irq_regs + GPIO_IRQ_STATUS;
124 		return gpio->base + bank->tolerance_regs;
171 	struct aspeed_sgpio *gpio = gpiochip_get_data(gc);
177 	raw_spin_lock_irqsave(&gpio->lock, flags);
180 	rc = !!(ioread32(bank_reg(gpio, bank, reg)) & GPIO_BIT(offset));
182 	raw_spin_unlock_irqrestore(&gpio->lock, flags);
189 	struct aspeed_sgpio *gpio = gpiochip_get_data(gc);
199 	addr_r = bank_reg(gpio, bank, reg_rdata);
200 	addr_w = bank_reg(gpio, bank, reg_val);
216 	struct aspeed_sgpio *gpio = gpiochip_get_data(gc);
219 	raw_spin_lock_irqsave(&gpio->lock, flags);
223 	raw_spin_unlock_irqrestore(&gpio->lock, flags);
233 	struct aspeed_sgpio *gpio = gpiochip_get_data(gc);
240 	raw_spin_lock_irqsave(&gpio->lock, flags);
242 	raw_spin_unlock_irqrestore(&gpio->lock, flags);
253 					struct aspeed_sgpio **gpio,
263 	*gpio = internal;
271 	struct aspeed_sgpio *gpio;
277 	irqd_to_aspeed_sgpio_data(d, &gpio, &bank, &bit, &offset);
279 	status_addr = bank_reg(gpio, bank, reg_irq_status);
281 	raw_spin_lock_irqsave(&gpio->lock, flags);
285 	raw_spin_unlock_irqrestore(&gpio->lock, flags);
291 	struct aspeed_sgpio *gpio;
297 	irqd_to_aspeed_sgpio_data(d, &gpio, &bank, &bit, &offset);
298 	addr = bank_reg(gpio, bank, reg_irq_enable);
302 		gpiochip_enable_irq(&gpio->chip, irqd_to_hwirq(d));
304 	raw_spin_lock_irqsave(&gpio->lock, flags);
314 	raw_spin_unlock_irqrestore(&gpio->lock, flags);
318 		gpiochip_disable_irq(&gpio->chip, irqd_to_hwirq(d));
341 	struct aspeed_sgpio *gpio;
346 	irqd_to_aspeed_sgpio_data(d, &gpio, &bank, &bit, &offset);
369 	raw_spin_lock_irqsave(&gpio->lock, flags);
371 	addr = bank_reg(gpio, bank, reg_irq_type0);
376 	addr = bank_reg(gpio, bank, reg_irq_type1);
381 	addr = bank_reg(gpio, bank, reg_irq_type2);
386 	raw_spin_unlock_irqrestore(&gpio->lock, flags);
418 	struct aspeed_sgpio *gpio;
422 	irqd_to_aspeed_sgpio_data(d, &gpio, &bank, &bit, &offset);
423 	seq_printf(p, dev_name(gpio->dev));
436 static int aspeed_sgpio_setup_irqs(struct aspeed_sgpio *gpio,
447 	gpio->irq = rc;
453 		iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_enable));
455 		iowrite32(0xffffffff, bank_reg(gpio, bank, reg_irq_status));
458 	irq = &gpio->chip.irq;
464 	irq->parent_handler_data = gpio;
465 	irq->parents = &gpio->irq;
472 		iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_type0));
474 		iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_type1));
476 		iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_type2));
489 	struct aspeed_sgpio *gpio = gpiochip_get_data(chip);
494 	reg = bank_reg(gpio, to_bank(offset), reg_tolerance);
496 	raw_spin_lock_irqsave(&gpio->lock, flags);
507 	raw_spin_unlock_irqrestore(&gpio->lock, flags);
541 	struct aspeed_sgpio *gpio;
545 	gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
546 	if (!gpio)
549 	gpio->base = devm_platform_ioremap_resource(pdev, 0);
550 	if (IS_ERR(gpio->base))
551 		return PTR_ERR(gpio->base);
553 	gpio->dev = &pdev->dev;
577 	gpio->pclk = devm_clk_get(&pdev->dev, NULL);
578 	if (IS_ERR(gpio->pclk)) {
580 		return PTR_ERR(gpio->pclk);
583 	apb_freq = clk_get_rate(gpio->pclk);
604 		  ASPEED_SGPIO_ENABLE, gpio->base + ASPEED_SGPIO_CTRL);
606 	raw_spin_lock_init(&gpio->lock);
608 	gpio->chip.parent = &pdev->dev;
609 	gpio->chip.ngpio = nr_gpios * 2;
610 	gpio->chip.init_valid_mask = aspeed_sgpio_init_valid_mask;
611 	gpio->chip.direction_input = aspeed_sgpio_dir_in;
612 	gpio->chip.direction_output = aspeed_sgpio_dir_out;
613 	gpio->chip.get_direction = aspeed_sgpio_get_direction;
614 	gpio->chip.request = NULL;
615 	gpio->chip.free = NULL;
616 	gpio->chip.get = aspeed_sgpio_get;
617 	gpio->chip.set = aspeed_sgpio_set;
618 	gpio->chip.set_config = aspeed_sgpio_set_config;
619 	gpio->chip.label = dev_name(&pdev->dev);
620 	gpio->chip.base = -1;
622 	aspeed_sgpio_setup_irqs(gpio, pdev);
624 	rc = devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);