Lines Matching +full:non +full:- +full:muxed
1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (c) 2006-2007 David Brownell
22 #include <linux/platform_data/gpio-davinci.h>
26 #include <asm-generic/gpio.h>
46 #define BINTEN 0x8 /* GPIO Interrupt Per-Bank Enable Register */
83 /*--------------------------------------------------------------------------*/
96 g = d->regs[bank]; in __davinci_direction()
97 spin_lock_irqsave(&d->lock, flags); in __davinci_direction()
98 temp = readl_relaxed(&g->dir); in __davinci_direction()
101 writel_relaxed(mask, value ? &g->set_data : &g->clr_data); in __davinci_direction()
105 writel_relaxed(temp, &g->dir); in __davinci_direction()
106 spin_unlock_irqrestore(&d->lock, flags); in __davinci_direction()
135 g = d->regs[bank]; in davinci_gpio_get()
137 return !!(__gpio_mask(offset) & readl_relaxed(&g->in_data)); in davinci_gpio_get()
141 * Assuming the pin is muxed as a gpio output, set its output value.
150 g = d->regs[bank]; in davinci_gpio_set()
153 value ? &g->set_data : &g->clr_data); in davinci_gpio_set()
159 struct device_node *dn = pdev->dev.of_node; in davinci_gpio_get_pdata()
164 if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node) in davinci_gpio_get_pdata()
165 return dev_get_platdata(&pdev->dev); in davinci_gpio_get_pdata()
167 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); in davinci_gpio_get_pdata()
175 pdata->ngpio = val; in davinci_gpio_get_pdata()
177 ret = of_property_read_u32(dn, "ti,davinci-gpio-unbanked", &val); in davinci_gpio_get_pdata()
181 pdata->gpio_unbanked = val; in davinci_gpio_get_pdata()
186 dev_err(&pdev->dev, "Populating pdata from DT failed: err %d\n", ret); in davinci_gpio_get_pdata()
196 struct device *dev = &pdev->dev; in davinci_gpio_probe()
201 return -EINVAL; in davinci_gpio_probe()
204 dev->platform_data = pdata; in davinci_gpio_probe()
208 * and "ngpio" is one more than the largest zero-based in davinci_gpio_probe()
211 ngpio = pdata->ngpio; in davinci_gpio_probe()
214 return -EINVAL; in davinci_gpio_probe()
225 if (pdata->gpio_unbanked) in davinci_gpio_probe()
226 nirq = pdata->gpio_unbanked; in davinci_gpio_probe()
232 return -ENOMEM; in davinci_gpio_probe()
239 chips->irqs[i] = platform_get_irq(pdev, i); in davinci_gpio_probe()
240 if (chips->irqs[i] < 0) in davinci_gpio_probe()
241 return dev_err_probe(dev, chips->irqs[i], "IRQ not populated\n"); in davinci_gpio_probe()
244 chips->chip.label = dev_name(dev); in davinci_gpio_probe()
246 chips->chip.direction_input = davinci_direction_in; in davinci_gpio_probe()
247 chips->chip.get = davinci_gpio_get; in davinci_gpio_probe()
248 chips->chip.direction_output = davinci_direction_out; in davinci_gpio_probe()
249 chips->chip.set = davinci_gpio_set; in davinci_gpio_probe()
251 chips->chip.ngpio = ngpio; in davinci_gpio_probe()
252 chips->chip.base = pdata->no_auto_base ? pdata->base : -1; in davinci_gpio_probe()
255 chips->chip.of_gpio_n_cells = 2; in davinci_gpio_probe()
256 chips->chip.parent = dev; in davinci_gpio_probe()
257 chips->chip.of_node = dev->of_node; in davinci_gpio_probe()
258 chips->chip.request = gpiochip_generic_request; in davinci_gpio_probe()
259 chips->chip.free = gpiochip_generic_free; in davinci_gpio_probe()
261 spin_lock_init(&chips->lock); in davinci_gpio_probe()
265 chips->regs[bank] = gpio_base + offset_array[bank]; in davinci_gpio_probe()
267 ret = devm_gpiochip_add_data(dev, &chips->chip, chips); in davinci_gpio_probe()
279 /*--------------------------------------------------------------------------*/
296 writel_relaxed(mask, &g->clr_falling); in gpio_irq_disable()
297 writel_relaxed(mask, &g->clr_rising); in gpio_irq_disable()
311 writel_relaxed(mask, &g->set_falling); in gpio_irq_enable()
313 writel_relaxed(mask, &g->set_rising); in gpio_irq_enable()
319 return -EINVAL; in gpio_irq_type()
341 bank_num = irqdata->bank_num; in gpio_irq_handler()
342 g = irqdata->regs; in gpio_irq_handler()
343 d = irqdata->chip; in gpio_irq_handler()
357 status = readl_relaxed(&g->intstat) & mask; in gpio_irq_handler()
360 writel_relaxed(status, &g->intstat); in gpio_irq_handler()
373 irq_find_mapping(d->irq_domain, hw_irq)); in gpio_irq_handler()
377 /* now it may re-trigger */ in gpio_irq_handler()
384 if (d->irq_domain) in gpio_to_irq_banked()
385 return irq_create_mapping(d->irq_domain, offset); in gpio_to_irq_banked()
387 return -ENXIO; in gpio_to_irq_banked()
396 * can provide direct-mapped IRQs to AINTC (up to 32 GPIOs). in gpio_to_irq_unbanked()
398 if (offset < d->gpio_unbanked) in gpio_to_irq_unbanked()
399 return d->irqs[offset]; in gpio_to_irq_unbanked()
401 return -ENODEV; in gpio_to_irq_unbanked()
411 g = (struct davinci_gpio_regs __iomem *)d->regs[0]; in gpio_irq_type_unbanked()
413 if (data->irq == d->irqs[i]) in gpio_irq_type_unbanked()
417 return -EINVAL; in gpio_irq_type_unbanked()
422 return -EINVAL; in gpio_irq_type_unbanked()
425 ? &g->set_falling : &g->clr_falling); in gpio_irq_type_unbanked()
427 ? &g->set_rising : &g->clr_rising); in gpio_irq_type_unbanked()
437 (struct davinci_gpio_controller *)d->host_data; in davinci_gpio_irq_map()
438 struct davinci_gpio_regs __iomem *g = chips->regs[hw / 32]; in davinci_gpio_irq_map()
489 struct device *dev = &pdev->dev; in davinci_gpio_irq_setup()
491 struct davinci_gpio_platform_data *pdata = dev->platform_data; in davinci_gpio_irq_setup()
500 * Use davinci_gpio_get_irq_chip by default to handle non DT cases in davinci_gpio_irq_setup()
506 gpio_get_irq_chip = (gpio_get_irq_chip_cb_t)match->data; in davinci_gpio_irq_setup()
508 ngpio = pdata->ngpio; in davinci_gpio_irq_setup()
520 if (!pdata->gpio_unbanked) { in davinci_gpio_irq_setup()
521 irq = devm_irq_alloc_descs(dev, -1, 0, ngpio, 0); in davinci_gpio_irq_setup()
528 irq_domain = irq_domain_add_legacy(dev->of_node, ngpio, irq, 0, in davinci_gpio_irq_setup()
534 return -ENODEV; in davinci_gpio_irq_setup()
544 chips->chip.to_irq = gpio_to_irq_banked; in davinci_gpio_irq_setup()
545 chips->irq_domain = irq_domain; in davinci_gpio_irq_setup()
552 if (pdata->gpio_unbanked) { in davinci_gpio_irq_setup()
554 chips->chip.to_irq = gpio_to_irq_unbanked; in davinci_gpio_irq_setup()
555 chips->gpio_unbanked = pdata->gpio_unbanked; in davinci_gpio_irq_setup()
556 binten = GENMASK(pdata->gpio_unbanked / 16, 0); in davinci_gpio_irq_setup()
559 irq = chips->irqs[0]; in davinci_gpio_irq_setup()
561 irq_chip->name = "GPIO-AINTC"; in davinci_gpio_irq_setup()
562 irq_chip->irq_set_type = gpio_irq_type_unbanked; in davinci_gpio_irq_setup()
565 g = chips->regs[0]; in davinci_gpio_irq_setup()
566 writel_relaxed(~0, &g->set_falling); in davinci_gpio_irq_setup()
567 writel_relaxed(~0, &g->set_rising); in davinci_gpio_irq_setup()
570 for (gpio = 0; gpio < pdata->gpio_unbanked; gpio++) { in davinci_gpio_irq_setup()
571 irq_set_chip(chips->irqs[gpio], irq_chip); in davinci_gpio_irq_setup()
572 irq_set_handler_data(chips->irqs[gpio], chips); in davinci_gpio_irq_setup()
573 irq_set_status_flags(chips->irqs[gpio], in davinci_gpio_irq_setup()
589 g = chips->regs[bank / 2]; in davinci_gpio_irq_setup()
590 writel_relaxed(~0, &g->clr_falling); in davinci_gpio_irq_setup()
591 writel_relaxed(~0, &g->clr_rising); in davinci_gpio_irq_setup()
598 irqdata = devm_kzalloc(&pdev->dev, in davinci_gpio_irq_setup()
604 return -ENOMEM; in davinci_gpio_irq_setup()
607 irqdata->regs = g; in davinci_gpio_irq_setup()
608 irqdata->bank_num = bank; in davinci_gpio_irq_setup()
609 irqdata->chip = chips; in davinci_gpio_irq_setup()
611 irq_set_chained_handler_and_data(chips->irqs[bank], in davinci_gpio_irq_setup()
619 * BINTEN -- per-bank interrupt enable. genirq would also let these in davinci_gpio_irq_setup()
628 { .compatible = "ti,keystone-gpio", keystone_gpio_get_irq_chip},
629 { .compatible = "ti,am654-gpio", keystone_gpio_get_irq_chip},
630 { .compatible = "ti,dm6441-gpio", davinci_gpio_get_irq_chip},