Lines Matching refs:gpio
87 struct dwapb_gpio *gpio; member
123 static inline u32 gpio_reg_convert(struct dwapb_gpio *gpio, unsigned int offset) in gpio_reg_convert() argument
125 if (gpio->flags & GPIO_REG_OFFSET_V2) in gpio_reg_convert()
131 static inline u32 dwapb_read(struct dwapb_gpio *gpio, unsigned int offset) in dwapb_read() argument
133 struct gpio_chip *gc = &gpio->ports[0].gc; in dwapb_read()
134 void __iomem *reg_base = gpio->regs; in dwapb_read()
136 return gc->read_reg(reg_base + gpio_reg_convert(gpio, offset)); in dwapb_read()
139 static inline void dwapb_write(struct dwapb_gpio *gpio, unsigned int offset, in dwapb_write() argument
142 struct gpio_chip *gc = &gpio->ports[0].gc; in dwapb_write()
143 void __iomem *reg_base = gpio->regs; in dwapb_write()
145 gc->write_reg(reg_base + gpio_reg_convert(gpio, offset), val); in dwapb_write()
151 struct dwapb_gpio *gpio = port->gpio; in dwapb_gpio_to_irq() local
153 return irq_find_mapping(gpio->domain, offset); in dwapb_gpio_to_irq()
156 static struct dwapb_gpio_port *dwapb_offs_to_port(struct dwapb_gpio *gpio, unsigned int offs) in dwapb_offs_to_port() argument
161 for (i = 0; i < gpio->nr_ports; i++) { in dwapb_offs_to_port()
162 port = &gpio->ports[i]; in dwapb_offs_to_port()
170 static void dwapb_toggle_trigger(struct dwapb_gpio *gpio, unsigned int offs) in dwapb_toggle_trigger() argument
172 struct dwapb_gpio_port *port = dwapb_offs_to_port(gpio, offs); in dwapb_toggle_trigger()
181 pol = dwapb_read(gpio, GPIO_INT_POLARITY); in dwapb_toggle_trigger()
189 dwapb_write(gpio, GPIO_INT_POLARITY, pol); in dwapb_toggle_trigger()
192 static u32 dwapb_do_irq(struct dwapb_gpio *gpio) in dwapb_do_irq() argument
194 u32 irq_status = dwapb_read(gpio, GPIO_INTSTATUS); in dwapb_do_irq()
199 int gpio_irq = irq_find_mapping(gpio->domain, hwirq); in dwapb_do_irq()
206 dwapb_toggle_trigger(gpio, hwirq); in dwapb_do_irq()
214 struct dwapb_gpio *gpio = irq_desc_get_handler_data(desc); in dwapb_irq_handler() local
217 dwapb_do_irq(gpio); in dwapb_irq_handler()
226 struct dwapb_gpio *gpio = igc->private; in dwapb_irq_enable() local
227 struct gpio_chip *gc = &gpio->ports[0].gc; in dwapb_irq_enable()
232 val = dwapb_read(gpio, GPIO_INTEN); in dwapb_irq_enable()
234 dwapb_write(gpio, GPIO_INTEN, val); in dwapb_irq_enable()
241 struct dwapb_gpio *gpio = igc->private; in dwapb_irq_disable() local
242 struct gpio_chip *gc = &gpio->ports[0].gc; in dwapb_irq_disable()
247 val = dwapb_read(gpio, GPIO_INTEN); in dwapb_irq_disable()
249 dwapb_write(gpio, GPIO_INTEN, val); in dwapb_irq_disable()
256 struct dwapb_gpio *gpio = igc->private; in dwapb_irq_reqres() local
257 struct gpio_chip *gc = &gpio->ports[0].gc; in dwapb_irq_reqres()
262 dev_err(gpio->dev, "unable to lock HW IRQ %lu for IRQ\n", in dwapb_irq_reqres()
272 struct dwapb_gpio *gpio = igc->private; in dwapb_irq_relres() local
273 struct gpio_chip *gc = &gpio->ports[0].gc; in dwapb_irq_relres()
281 struct dwapb_gpio *gpio = igc->private; in dwapb_irq_set_type() local
282 struct gpio_chip *gc = &gpio->ports[0].gc; in dwapb_irq_set_type()
291 level = dwapb_read(gpio, GPIO_INTTYPE_LEVEL); in dwapb_irq_set_type()
292 polarity = dwapb_read(gpio, GPIO_INT_POLARITY); in dwapb_irq_set_type()
297 dwapb_toggle_trigger(gpio, bit); in dwapb_irq_set_type()
319 dwapb_write(gpio, GPIO_INTTYPE_LEVEL, level); in dwapb_irq_set_type()
321 dwapb_write(gpio, GPIO_INT_POLARITY, polarity); in dwapb_irq_set_type()
331 struct dwapb_gpio *gpio = igc->private; in dwapb_irq_set_wake() local
332 struct dwapb_context *ctx = gpio->ports[0].ctx; in dwapb_irq_set_wake()
347 struct dwapb_gpio *gpio = port->gpio; in dwapb_gpio_set_debounce() local
353 val_deb = dwapb_read(gpio, GPIO_PORTA_DEBOUNCE); in dwapb_gpio_set_debounce()
355 dwapb_write(gpio, GPIO_PORTA_DEBOUNCE, val_deb | mask); in dwapb_gpio_set_debounce()
357 dwapb_write(gpio, GPIO_PORTA_DEBOUNCE, val_deb & ~mask); in dwapb_gpio_set_debounce()
379 struct dwapb_gpio *gpio = dev_id; in dwapb_irq_handler_mfd() local
381 worked = dwapb_do_irq(gpio); in dwapb_irq_handler_mfd()
386 static void dwapb_configure_irqs(struct dwapb_gpio *gpio, in dwapb_configure_irqs() argument
397 gpio->domain = irq_domain_create_linear(fwnode, ngpio, in dwapb_configure_irqs()
398 &irq_generic_chip_ops, gpio); in dwapb_configure_irqs()
399 if (!gpio->domain) in dwapb_configure_irqs()
402 err = irq_alloc_domain_generic_chips(gpio->domain, ngpio, 2, in dwapb_configure_irqs()
407 dev_info(gpio->dev, "irq_alloc_domain_generic_chips failed\n"); in dwapb_configure_irqs()
408 irq_domain_remove(gpio->domain); in dwapb_configure_irqs()
409 gpio->domain = NULL; in dwapb_configure_irqs()
413 irq_gc = irq_get_domain_generic_chip(gpio->domain, 0); in dwapb_configure_irqs()
415 irq_domain_remove(gpio->domain); in dwapb_configure_irqs()
416 gpio->domain = NULL; in dwapb_configure_irqs()
420 irq_gc->reg_base = gpio->regs; in dwapb_configure_irqs()
421 irq_gc->private = gpio; in dwapb_configure_irqs()
436 ct->regs.ack = gpio_reg_convert(gpio, GPIO_PORTA_EOI); in dwapb_configure_irqs()
437 ct->regs.mask = gpio_reg_convert(gpio, GPIO_INTMASK); in dwapb_configure_irqs()
451 dwapb_irq_handler, gpio); in dwapb_configure_irqs()
458 err = devm_request_irq(gpio->dev, pp->irq[0], in dwapb_configure_irqs()
460 IRQF_SHARED, "gpio-dwapb-mfd", gpio); in dwapb_configure_irqs()
462 dev_err(gpio->dev, "error requesting IRQ\n"); in dwapb_configure_irqs()
463 irq_domain_remove(gpio->domain); in dwapb_configure_irqs()
464 gpio->domain = NULL; in dwapb_configure_irqs()
470 irq_create_mapping(gpio->domain, hwirq); in dwapb_configure_irqs()
475 static void dwapb_irq_teardown(struct dwapb_gpio *gpio) in dwapb_irq_teardown() argument
477 struct dwapb_gpio_port *port = &gpio->ports[0]; in dwapb_irq_teardown()
482 if (!gpio->domain) in dwapb_irq_teardown()
486 irq_dispose_mapping(irq_find_mapping(gpio->domain, hwirq)); in dwapb_irq_teardown()
488 irq_domain_remove(gpio->domain); in dwapb_irq_teardown()
489 gpio->domain = NULL; in dwapb_irq_teardown()
492 static int dwapb_gpio_add_port(struct dwapb_gpio *gpio, in dwapb_gpio_add_port() argument
500 port = &gpio->ports[offs]; in dwapb_gpio_add_port()
501 port->gpio = gpio; in dwapb_gpio_add_port()
505 port->ctx = devm_kzalloc(gpio->dev, sizeof(*port->ctx), GFP_KERNEL); in dwapb_gpio_add_port()
510 dat = gpio->regs + GPIO_EXT_PORTA + (pp->idx * GPIO_EXT_PORT_STRIDE); in dwapb_gpio_add_port()
511 set = gpio->regs + GPIO_SWPORTA_DR + (pp->idx * GPIO_SWPORT_DR_STRIDE); in dwapb_gpio_add_port()
512 dirout = gpio->regs + GPIO_SWPORTA_DDR + in dwapb_gpio_add_port()
516 err = bgpio_init(&port->gc, gpio->dev, 4, dat, set, NULL, dirout, in dwapb_gpio_add_port()
519 dev_err(gpio->dev, "failed to init gpio chip for port%d\n", in dwapb_gpio_add_port()
535 dwapb_configure_irqs(gpio, port, pp); in dwapb_gpio_add_port()
539 dev_err(gpio->dev, "failed to register gpiochip for port%d\n", in dwapb_gpio_add_port()
551 static void dwapb_gpio_unregister(struct dwapb_gpio *gpio) in dwapb_gpio_unregister() argument
555 for (m = 0; m < gpio->nr_ports; ++m) in dwapb_gpio_unregister()
556 if (gpio->ports[m].is_registered) in dwapb_gpio_unregister()
557 gpiochip_remove(&gpio->ports[m].gc); in dwapb_gpio_unregister()
659 struct dwapb_gpio *gpio; in dwapb_gpio_probe() local
673 gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); in dwapb_gpio_probe()
674 if (!gpio) in dwapb_gpio_probe()
677 gpio->dev = &pdev->dev; in dwapb_gpio_probe()
678 gpio->nr_ports = pdata->nports; in dwapb_gpio_probe()
680 gpio->rst = devm_reset_control_get_optional_shared(dev, NULL); in dwapb_gpio_probe()
681 if (IS_ERR(gpio->rst)) in dwapb_gpio_probe()
682 return PTR_ERR(gpio->rst); in dwapb_gpio_probe()
684 reset_control_deassert(gpio->rst); in dwapb_gpio_probe()
686 gpio->ports = devm_kcalloc(&pdev->dev, gpio->nr_ports, in dwapb_gpio_probe()
687 sizeof(*gpio->ports), GFP_KERNEL); in dwapb_gpio_probe()
688 if (!gpio->ports) in dwapb_gpio_probe()
692 gpio->regs = devm_ioremap_resource(&pdev->dev, res); in dwapb_gpio_probe()
693 if (IS_ERR(gpio->regs)) in dwapb_gpio_probe()
694 return PTR_ERR(gpio->regs); in dwapb_gpio_probe()
697 gpio->clk = devm_clk_get(&pdev->dev, "bus"); in dwapb_gpio_probe()
698 if (!IS_ERR(gpio->clk)) { in dwapb_gpio_probe()
699 err = clk_prepare_enable(gpio->clk); in dwapb_gpio_probe()
706 gpio->flags = 0; in dwapb_gpio_probe()
708 gpio->flags = (uintptr_t)of_device_get_match_data(dev); in dwapb_gpio_probe()
715 gpio->flags = acpi_id->driver_data; in dwapb_gpio_probe()
719 for (i = 0; i < gpio->nr_ports; i++) { in dwapb_gpio_probe()
720 err = dwapb_gpio_add_port(gpio, &pdata->properties[i], i); in dwapb_gpio_probe()
724 platform_set_drvdata(pdev, gpio); in dwapb_gpio_probe()
729 dwapb_gpio_unregister(gpio); in dwapb_gpio_probe()
730 dwapb_irq_teardown(gpio); in dwapb_gpio_probe()
731 clk_disable_unprepare(gpio->clk); in dwapb_gpio_probe()
738 struct dwapb_gpio *gpio = platform_get_drvdata(pdev); in dwapb_gpio_remove() local
740 dwapb_gpio_unregister(gpio); in dwapb_gpio_remove()
741 dwapb_irq_teardown(gpio); in dwapb_gpio_remove()
742 reset_control_assert(gpio->rst); in dwapb_gpio_remove()
743 clk_disable_unprepare(gpio->clk); in dwapb_gpio_remove()
752 struct dwapb_gpio *gpio = platform_get_drvdata(pdev); in dwapb_gpio_suspend() local
753 struct gpio_chip *gc = &gpio->ports[0].gc; in dwapb_gpio_suspend()
758 for (i = 0; i < gpio->nr_ports; i++) { in dwapb_gpio_suspend()
760 unsigned int idx = gpio->ports[i].idx; in dwapb_gpio_suspend()
761 struct dwapb_context *ctx = gpio->ports[i].ctx; in dwapb_gpio_suspend()
766 ctx->dir = dwapb_read(gpio, offset); in dwapb_gpio_suspend()
769 ctx->data = dwapb_read(gpio, offset); in dwapb_gpio_suspend()
772 ctx->ext = dwapb_read(gpio, offset); in dwapb_gpio_suspend()
776 ctx->int_mask = dwapb_read(gpio, GPIO_INTMASK); in dwapb_gpio_suspend()
777 ctx->int_en = dwapb_read(gpio, GPIO_INTEN); in dwapb_gpio_suspend()
778 ctx->int_pol = dwapb_read(gpio, GPIO_INT_POLARITY); in dwapb_gpio_suspend()
779 ctx->int_type = dwapb_read(gpio, GPIO_INTTYPE_LEVEL); in dwapb_gpio_suspend()
780 ctx->int_deb = dwapb_read(gpio, GPIO_PORTA_DEBOUNCE); in dwapb_gpio_suspend()
783 dwapb_write(gpio, GPIO_INTMASK, in dwapb_gpio_suspend()
789 clk_disable_unprepare(gpio->clk); in dwapb_gpio_suspend()
797 struct dwapb_gpio *gpio = platform_get_drvdata(pdev); in dwapb_gpio_resume() local
798 struct gpio_chip *gc = &gpio->ports[0].gc; in dwapb_gpio_resume()
802 if (!IS_ERR(gpio->clk)) in dwapb_gpio_resume()
803 clk_prepare_enable(gpio->clk); in dwapb_gpio_resume()
806 for (i = 0; i < gpio->nr_ports; i++) { in dwapb_gpio_resume()
808 unsigned int idx = gpio->ports[i].idx; in dwapb_gpio_resume()
809 struct dwapb_context *ctx = gpio->ports[i].ctx; in dwapb_gpio_resume()
814 dwapb_write(gpio, offset, ctx->data); in dwapb_gpio_resume()
817 dwapb_write(gpio, offset, ctx->dir); in dwapb_gpio_resume()
820 dwapb_write(gpio, offset, ctx->ext); in dwapb_gpio_resume()
824 dwapb_write(gpio, GPIO_INTTYPE_LEVEL, ctx->int_type); in dwapb_gpio_resume()
825 dwapb_write(gpio, GPIO_INT_POLARITY, ctx->int_pol); in dwapb_gpio_resume()
826 dwapb_write(gpio, GPIO_PORTA_DEBOUNCE, ctx->int_deb); in dwapb_gpio_resume()
827 dwapb_write(gpio, GPIO_INTEN, ctx->int_en); in dwapb_gpio_resume()
828 dwapb_write(gpio, GPIO_INTMASK, ctx->int_mask); in dwapb_gpio_resume()
831 dwapb_write(gpio, GPIO_PORTA_EOI, 0xffffffff); in dwapb_gpio_resume()