1 // SPDX-License-Identifier: GPL-2.0-only
25 #include <linux/dma-map-ops.h>
30 #include <asm/mach-types.h>
107 	int		irq_base;	/* base for cascaded on-chip IRQs */
199 	return irq_create_mapping(sachip->irqdomain, hwirq);  in sa1111_map_irq()
212 	void __iomem *mapbase = sachip->base + SA1111_INTC;  in sa1111_irq_handler()
219 	desc->irq_data.chip->irq_ack(&desc->irq_data);  in sa1111_irq_handler()
228 	irqdomain = sachip->irqdomain;  in sa1111_irq_handler()
238 	/* For level-based interrupts */  in sa1111_irq_handler()
239 	desc->irq_data.chip->irq_unmask(&desc->irq_data);  in sa1111_irq_handler()
259 	void __iomem *mapbase = sachip->base + SA1111_INTC + sa1111_irqbank(d);  in sa1111_mask_irq()
270 	void __iomem *mapbase = sachip->base + SA1111_INTC + sa1111_irqbank(d);  in sa1111_unmask_irq()
279  * Attempt to re-trigger the interrupt.  The SA1111 contains a register
283  * INTSET to re-trigger the interrupt.
288 	void __iomem *mapbase = sachip->base + SA1111_INTC + sa1111_irqbank(d);  in sa1111_retrigger_irq()
301 		pr_err("Danger Will Robinson: failed to re-trigger IRQ%d\n",  in sa1111_retrigger_irq()
302 		       d->irq);  in sa1111_retrigger_irq()
312 	void __iomem *mapbase = sachip->base + SA1111_INTC + sa1111_irqbank(d);  in sa1111_type_irq()
319 		return -EINVAL;  in sa1111_type_irq()
335 	void __iomem *mapbase = sachip->base + SA1111_INTC + sa1111_irqbank(d);  in sa1111_wake_irq()
361 	struct sa1111 *sachip = d->host_data;  in sa1111_irqdomain_map()
365 		return -EINVAL;  in sa1111_irqdomain_map()
381 	void __iomem *irqbase = sachip->base + SA1111_INTC;  in sa1111_setup_irq()
387 	request_mem_region(sachip->phys + SA1111_INTC, 512, "irq");  in sa1111_setup_irq()
389 	ret = irq_alloc_descs(-1, irq_base, SA1111_IRQ_NR, -1);  in sa1111_setup_irq()
391 		dev_err(sachip->dev, "unable to allocate %u irqs: %d\n",  in sa1111_setup_irq()
394 			ret = -EINVAL;  in sa1111_setup_irq()
398 	sachip->irq_base = ret;  in sa1111_setup_irq()
419 	sachip->irqdomain = irq_domain_create_linear(NULL, SA1111_IRQ_NR,  in sa1111_setup_irq()
422 	if (!sachip->irqdomain) {  in sa1111_setup_irq()
423 		irq_free_descs(sachip->irq_base, SA1111_IRQ_NR);  in sa1111_setup_irq()
424 		return -ENOMEM;  in sa1111_setup_irq()
427 	irq_domain_associate_many(sachip->irqdomain,  in sa1111_setup_irq()
428 				  sachip->irq_base + IRQ_GPAIN0,  in sa1111_setup_irq()
429 				  IRQ_GPAIN0, SSPROR + 1 - IRQ_GPAIN0);  in sa1111_setup_irq()
430 	irq_domain_associate_many(sachip->irqdomain,  in sa1111_setup_irq()
431 				  sachip->irq_base + AUDXMTDMADONEA,  in sa1111_setup_irq()
433 				  IRQ_S1_BVD1_STSCHG + 1 - AUDXMTDMADONEA);  in sa1111_setup_irq()
438 	irq_set_irq_type(sachip->irq, IRQ_TYPE_EDGE_RISING);  in sa1111_setup_irq()
439 	irq_set_chained_handler_and_data(sachip->irq, sa1111_irq_handler,  in sa1111_setup_irq()
442 	dev_info(sachip->dev, "Providing IRQ%u-%u\n",  in sa1111_setup_irq()
443 		sachip->irq_base, sachip->irq_base + SA1111_IRQ_NR - 1);  in sa1111_setup_irq()
450 	struct irq_domain *domain = sachip->irqdomain;  in sa1111_remove_irq()
451 	void __iomem *irqbase = sachip->base + SA1111_INTC;  in sa1111_remove_irq()
460 	irq_set_chained_handler_and_data(sachip->irq, NULL, NULL);  in sa1111_remove_irq()
465 	release_mem_region(sachip->phys + SA1111_INTC, 512);  in sa1111_remove_irq()
469 	SA1111_GPIO_PXDDR = (SA1111_GPIO_PADDR - SA1111_GPIO_PADDR),
470 	SA1111_GPIO_PXDRR = (SA1111_GPIO_PADRR - SA1111_GPIO_PADDR),
471 	SA1111_GPIO_PXDWR = (SA1111_GPIO_PADWR - SA1111_GPIO_PADDR),
472 	SA1111_GPIO_PXSDR = (SA1111_GPIO_PASDR - SA1111_GPIO_PADDR),
473 	SA1111_GPIO_PXSSR = (SA1111_GPIO_PASSR - SA1111_GPIO_PADDR),
483 	void __iomem *reg = sachip->base + SA1111_GPIO;  in sa1111_gpio_map_reg()
499 		return BIT(offset - 4);  in sa1111_gpio_map_bit()
501 		return BIT(offset - 10);  in sa1111_gpio_map_bit()
531 	spin_lock_irqsave(&sachip->lock, flags);  in sa1111_gpio_direction_input()
534 	spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_gpio_direction_input()
547 	spin_lock_irqsave(&sachip->lock, flags);  in sa1111_gpio_direction_output()
552 	spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_gpio_direction_output()
573 	spin_lock_irqsave(&sachip->lock, flags);  in sa1111_gpio_set()
576 	spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_gpio_set()
586 	void __iomem *reg = sachip->base + SA1111_GPIO;  in sa1111_gpio_set_multiple()
592 	spin_lock_irqsave(&sachip->lock, flags);  in sa1111_gpio_set_multiple()
599 	spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_gpio_set_multiple()
613 	sachip->gc.label = "sa1111";  in sa1111_setup_gpios()
614 	sachip->gc.parent = sachip->dev;  in sa1111_setup_gpios()
615 	sachip->gc.owner = THIS_MODULE;  in sa1111_setup_gpios()
616 	sachip->gc.get_direction = sa1111_gpio_get_direction;  in sa1111_setup_gpios()
617 	sachip->gc.direction_input = sa1111_gpio_direction_input;  in sa1111_setup_gpios()
618 	sachip->gc.direction_output = sa1111_gpio_direction_output;  in sa1111_setup_gpios()
619 	sachip->gc.get = sa1111_gpio_get;  in sa1111_setup_gpios()
620 	sachip->gc.set = sa1111_gpio_set;  in sa1111_setup_gpios()
621 	sachip->gc.set_multiple = sa1111_gpio_set_multiple;  in sa1111_setup_gpios()
622 	sachip->gc.to_irq = sa1111_gpio_to_irq;  in sa1111_setup_gpios()
623 	sachip->gc.base = -1;  in sa1111_setup_gpios()
624 	sachip->gc.ngpio = 18;  in sa1111_setup_gpios()
626 	return devm_gpiochip_add_data(sachip->dev, &sachip->gc, sachip);  in sa1111_setup_gpios()
647 	spin_lock_irqsave(&sachip->lock, flags);  in sa1111_wake()
649 	clk_enable(sachip->clk);  in sa1111_wake()
654 	r = readl_relaxed(sachip->base + SA1111_SKCR);  in sa1111_wake()
656 	writel_relaxed(r, sachip->base + SA1111_SKCR);  in sa1111_wake()
658 	writel_relaxed(r, sachip->base + SA1111_SKCR);  in sa1111_wake()
670 	writel_relaxed(r, sachip->base + SA1111_SKCR);  in sa1111_wake()
681 	writel_relaxed(0, sachip->base + SA1111_SKPCR);  in sa1111_wake()
683 	spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_wake()
711 	writel_relaxed(smcr, sachip->base + SA1111_SMCR);  in sa1111_configure_smc()
715 	 * DMA erratum (Intel StrongARM SA-1111 Microprocessor Companion  in sa1111_configure_smc()
718 	if (sachip->dev->dma_mask)  in sa1111_configure_smc()
719 		*sachip->dev->dma_mask &= sa1111_dma_mask[drac >> 2];  in sa1111_configure_smc()
721 	sachip->dev->coherent_dma_mask &= sa1111_dma_mask[drac >> 2];  in sa1111_configure_smc()
742 		ret = -ENOMEM;  in sa1111_init_one_child()
746 	device_initialize(&dev->dev);  in sa1111_init_one_child()
747 	dev_set_name(&dev->dev, "%4.4lx", info->offset);  in sa1111_init_one_child()
748 	dev->devid	 = info->devid;  in sa1111_init_one_child()
749 	dev->dev.parent  = sachip->dev;  in sa1111_init_one_child()
750 	dev->dev.bus     = &sa1111_bus_type;  in sa1111_init_one_child()
751 	dev->dev.release = sa1111_dev_release;  in sa1111_init_one_child()
752 	dev->res.start   = sachip->phys + info->offset;  in sa1111_init_one_child()
753 	dev->res.end     = dev->res.start + 511;  in sa1111_init_one_child()
754 	dev->res.name    = dev_name(&dev->dev);  in sa1111_init_one_child()
755 	dev->res.flags   = IORESOURCE_MEM;  in sa1111_init_one_child()
756 	dev->mapbase     = sachip->base + info->offset;  in sa1111_init_one_child()
757 	dev->skpcr_mask  = info->skpcr_mask;  in sa1111_init_one_child()
759 	for (i = 0; i < ARRAY_SIZE(info->hwirq); i++)  in sa1111_init_one_child()
760 		dev->hwirq[i] = info->hwirq[i];  in sa1111_init_one_child()
766 	if (info->dma && sachip->dev->dma_mask) {  in sa1111_init_one_child()
767 		dev->dma_mask = *sachip->dev->dma_mask;  in sa1111_init_one_child()
768 		dev->dev.dma_mask = &dev->dma_mask;  in sa1111_init_one_child()
769 		dev->dev.coherent_dma_mask = sachip->dev->coherent_dma_mask;  in sa1111_init_one_child()
772 	ret = request_resource(parent, &dev->res);  in sa1111_init_one_child()
774 		dev_err(sachip->dev, "failed to allocate resource for %s\n",  in sa1111_init_one_child()
775 			dev->res.name);  in sa1111_init_one_child()
779 	ret = device_add(&dev->dev);  in sa1111_init_one_child()
785 	release_resource(&dev->res);  in sa1111_init_one_child()
787 	put_device(&dev->dev);  in sa1111_init_one_child()
794 	struct sa1111_platform_data *pd = me->platform_data;  in __sa1111_probe()
798 	int i, ret = -ENODEV;  in __sa1111_probe()
801 		return -EINVAL;  in __sa1111_probe()
805 		return -ENOMEM;  in __sa1111_probe()
807 	sachip->clk = devm_clk_get(me, "SA1111_CLK");  in __sa1111_probe()
808 	if (IS_ERR(sachip->clk))  in __sa1111_probe()
809 		return PTR_ERR(sachip->clk);  in __sa1111_probe()
811 	ret = clk_prepare(sachip->clk);  in __sa1111_probe()
815 	spin_lock_init(&sachip->lock);  in __sa1111_probe()
817 	sachip->dev = me;  in __sa1111_probe()
818 	dev_set_drvdata(sachip->dev, sachip);  in __sa1111_probe()
820 	sachip->pdata = pd;  in __sa1111_probe()
821 	sachip->phys = mem->start;  in __sa1111_probe()
822 	sachip->irq = irq;  in __sa1111_probe()
828 	sachip->base = ioremap(mem->start, PAGE_SIZE * 2);  in __sa1111_probe()
829 	if (!sachip->base) {  in __sa1111_probe()
830 		ret = -ENOMEM;  in __sa1111_probe()
837 	id = readl_relaxed(sachip->base + SA1111_SKID);  in __sa1111_probe()
840 		ret = -ENODEV;  in __sa1111_probe()
856 	ret = sa1111_setup_irq(sachip, pd->irq_base);  in __sa1111_probe()
860 	/* Setup the GPIOs - should really be done after the IRQ setup */  in __sa1111_probe()
885 	val = readl_relaxed(sachip->base + SA1111_SKPCR);  in __sa1111_probe()
886 	writel_relaxed(val | SKPCR_DCLKEN, sachip->base + SA1111_SKPCR);  in __sa1111_probe()
899 		has_devs &= ~pd->disable_devs;  in __sa1111_probe()
910 	clk_disable(sachip->clk);  in __sa1111_probe()
912 	iounmap(sachip->base);  in __sa1111_probe()
914 	clk_unprepare(sachip->clk);  in __sa1111_probe()
921 	if (dev->bus != &sa1111_bus_type)  in sa1111_remove_one()
923 	device_del(&sadev->dev);  in sa1111_remove_one()
924 	release_resource(&sadev->res);  in sa1111_remove_one()
925 	put_device(&sadev->dev);  in sa1111_remove_one()
931 	device_for_each_child(sachip->dev, NULL, sa1111_remove_one);  in __sa1111_remove()
935 	clk_disable(sachip->clk);  in __sa1111_remove()
936 	clk_unprepare(sachip->clk);  in __sa1111_remove()
938 	iounmap(sachip->base);  in __sa1111_remove()
974 		return -ENOMEM;  in sa1111_suspend_noirq()
975 	sachip->saved_state = save;  in sa1111_suspend_noirq()
977 	spin_lock_irqsave(&sachip->lock, flags);  in sa1111_suspend_noirq()
982 	base = sachip->base;  in sa1111_suspend_noirq()
983 	save->skcr     = readl_relaxed(base + SA1111_SKCR);  in sa1111_suspend_noirq()
984 	save->skpcr    = readl_relaxed(base + SA1111_SKPCR);  in sa1111_suspend_noirq()
985 	save->skcdr    = readl_relaxed(base + SA1111_SKCDR);  in sa1111_suspend_noirq()
986 	save->skaud    = readl_relaxed(base + SA1111_SKAUD);  in sa1111_suspend_noirq()
987 	save->skpwm0   = readl_relaxed(base + SA1111_SKPWM0);  in sa1111_suspend_noirq()
988 	save->skpwm1   = readl_relaxed(base + SA1111_SKPWM1);  in sa1111_suspend_noirq()
990 	writel_relaxed(0, sachip->base + SA1111_SKPWM0);  in sa1111_suspend_noirq()
991 	writel_relaxed(0, sachip->base + SA1111_SKPWM1);  in sa1111_suspend_noirq()
993 	base = sachip->base + SA1111_INTC;  in sa1111_suspend_noirq()
994 	save->intpol0  = readl_relaxed(base + SA1111_INTPOL0);  in sa1111_suspend_noirq()
995 	save->intpol1  = readl_relaxed(base + SA1111_INTPOL1);  in sa1111_suspend_noirq()
996 	save->inten0   = readl_relaxed(base + SA1111_INTEN0);  in sa1111_suspend_noirq()
997 	save->inten1   = readl_relaxed(base + SA1111_INTEN1);  in sa1111_suspend_noirq()
998 	save->wakepol0 = readl_relaxed(base + SA1111_WAKEPOL0);  in sa1111_suspend_noirq()
999 	save->wakepol1 = readl_relaxed(base + SA1111_WAKEPOL1);  in sa1111_suspend_noirq()
1000 	save->wakeen0  = readl_relaxed(base + SA1111_WAKEEN0);  in sa1111_suspend_noirq()
1001 	save->wakeen1  = readl_relaxed(base + SA1111_WAKEEN1);  in sa1111_suspend_noirq()
1006 	val = readl_relaxed(sachip->base + SA1111_SKCR);  in sa1111_suspend_noirq()
1007 	writel_relaxed(val | SKCR_SLEEP, sachip->base + SA1111_SKCR);  in sa1111_suspend_noirq()
1009 	clk_disable(sachip->clk);  in sa1111_suspend_noirq()
1011 	spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_suspend_noirq()
1021  *	sa1111_resume - Restore the SA1111 device state.
1036 	save = sachip->saved_state;  in sa1111_resume_noirq()
1044 	id = readl_relaxed(sachip->base + SA1111_SKID);  in sa1111_resume_noirq()
1066 	spin_lock_irqsave(&sachip->lock, flags);  in sa1111_resume_noirq()
1068 	writel_relaxed(0, sachip->base + SA1111_INTC + SA1111_INTEN0);  in sa1111_resume_noirq()
1069 	writel_relaxed(0, sachip->base + SA1111_INTC + SA1111_INTEN1);  in sa1111_resume_noirq()
1071 	base = sachip->base;  in sa1111_resume_noirq()
1072 	writel_relaxed(save->skcr,     base + SA1111_SKCR);  in sa1111_resume_noirq()
1073 	writel_relaxed(save->skpcr,    base + SA1111_SKPCR);  in sa1111_resume_noirq()
1074 	writel_relaxed(save->skcdr,    base + SA1111_SKCDR);  in sa1111_resume_noirq()
1075 	writel_relaxed(save->skaud,    base + SA1111_SKAUD);  in sa1111_resume_noirq()
1076 	writel_relaxed(save->skpwm0,   base + SA1111_SKPWM0);  in sa1111_resume_noirq()
1077 	writel_relaxed(save->skpwm1,   base + SA1111_SKPWM1);  in sa1111_resume_noirq()
1079 	base = sachip->base + SA1111_INTC;  in sa1111_resume_noirq()
1080 	writel_relaxed(save->intpol0,  base + SA1111_INTPOL0);  in sa1111_resume_noirq()
1081 	writel_relaxed(save->intpol1,  base + SA1111_INTPOL1);  in sa1111_resume_noirq()
1082 	writel_relaxed(save->inten0,   base + SA1111_INTEN0);  in sa1111_resume_noirq()
1083 	writel_relaxed(save->inten1,   base + SA1111_INTEN1);  in sa1111_resume_noirq()
1084 	writel_relaxed(save->wakepol0, base + SA1111_WAKEPOL0);  in sa1111_resume_noirq()
1085 	writel_relaxed(save->wakepol1, base + SA1111_WAKEPOL1);  in sa1111_resume_noirq()
1086 	writel_relaxed(save->wakeen0,  base + SA1111_WAKEEN0);  in sa1111_resume_noirq()
1087 	writel_relaxed(save->wakeen1,  base + SA1111_WAKEEN1);  in sa1111_resume_noirq()
1089 	spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_resume_noirq()
1091 	sachip->saved_state = NULL;  in sa1111_resume_noirq()
1103  *	sa1111_probe - probe for a single SA1111 chip.
1107  *	before any other SA1111-specific code.
1110  *	* %-ENODEV	- device not found.
1111  *	* %-ENOMEM	- memory allocation failure.
1112  *	* %-EBUSY	- physical address already marked in-use.
1113  *	* %-EINVAL	- no platform data passed
1114  *	* %0		- successful.
1123 		return -EINVAL;  in sa1111_probe()
1128 	return __sa1111_probe(&pdev->dev, mem, irq);  in sa1111_probe()
1137 		kfree(sachip->saved_state);  in sa1111_remove()
1138 		sachip->saved_state = NULL;  in sa1111_remove()
1153  *	the per-machine level, and then have this driver pick
1174 	return (struct sa1111 *)dev_get_drvdata(sadev->dev.parent);  in sa1111_chip_driver()
1178  * The bits in the opdiv field are non-linear.
1186 	skcdr = readl_relaxed(sachip->base + SA1111_SKCDR);  in __sa1111_pll_clock()
1196  *	sa1111_pll_clock - return the current PLL clock frequency.
1213  *	sa1111_select_audio_mode - select I2S or AC link mode
1215  *	@mode: One of %SA1111_AUDIO_ACLINK or %SA1111_AUDIO_I2S
1217  *	Frob the SKCR to select AC Link mode or I2S mode for
1220 void sa1111_select_audio_mode(struct sa1111_dev *sadev, int mode)  in sa1111_select_audio_mode()  argument
1226 	spin_lock_irqsave(&sachip->lock, flags);  in sa1111_select_audio_mode()
1228 	val = readl_relaxed(sachip->base + SA1111_SKCR);  in sa1111_select_audio_mode()
1229 	if (mode == SA1111_AUDIO_I2S) {  in sa1111_select_audio_mode()
1234 	writel_relaxed(val, sachip->base + SA1111_SKCR);  in sa1111_select_audio_mode()
1236 	spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_select_audio_mode()
1241  *	sa1111_set_audio_rate - set the audio sample rate
1242  *	@sadev: SA1111 SAC function block
1250 	if (sadev->devid != SA1111_DEVID_SAC)  in sa1111_set_audio_rate()
1251 		return -EINVAL;  in sa1111_set_audio_rate()
1259 	writel_relaxed(div - 1, sachip->base + SA1111_SKAUD);  in sa1111_set_audio_rate()
1266  *	sa1111_get_audio_rate - get the audio sample rate
1267  *	@sadev: SA1111 SAC function block device
1274 	if (sadev->devid != SA1111_DEVID_SAC)  in sa1111_get_audio_rate()
1275 		return -EINVAL;  in sa1111_get_audio_rate()
1277 	div = readl_relaxed(sachip->base + SA1111_SKAUD) + 1;  in sa1111_get_audio_rate()
1288  *	sa1111_enable_device - enable an on-chip SA1111 function block
1298 	if (sachip->pdata && sachip->pdata->enable)  in sa1111_enable_device()
1299 		ret = sachip->pdata->enable(sachip->pdata->data, sadev->devid);  in sa1111_enable_device()
1302 		spin_lock_irqsave(&sachip->lock, flags);  in sa1111_enable_device()
1303 		val = readl_relaxed(sachip->base + SA1111_SKPCR);  in sa1111_enable_device()
1304 		writel_relaxed(val | sadev->skpcr_mask, sachip->base + SA1111_SKPCR);  in sa1111_enable_device()
1305 		spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_enable_device()
1312  *	sa1111_disable_device - disable an on-chip SA1111 function block
1321 	spin_lock_irqsave(&sachip->lock, flags);  in sa1111_disable_device()
1322 	val = readl_relaxed(sachip->base + SA1111_SKPCR);  in sa1111_disable_device()
1323 	writel_relaxed(val & ~sadev->skpcr_mask, sachip->base + SA1111_SKPCR);  in sa1111_disable_device()
1324 	spin_unlock_irqrestore(&sachip->lock, flags);  in sa1111_disable_device()
1326 	if (sachip->pdata && sachip->pdata->disable)  in sa1111_disable_device()
1327 		sachip->pdata->disable(sachip->pdata->data, sadev->devid);  in sa1111_disable_device()
1334 	if (num >= ARRAY_SIZE(sadev->hwirq))  in sa1111_get_irq()
1335 		return -EINVAL;  in sa1111_get_irq()
1336 	return sa1111_map_irq(sachip, sadev->hwirq[num]);  in sa1111_get_irq()
1351 	return !!(dev->devid & drv->devid);  in sa1111_match()
1357 	struct sa1111_driver *drv = SA1111_DRV(dev->driver);  in sa1111_bus_probe()
1358 	int ret = -ENODEV;  in sa1111_bus_probe()
1360 	if (drv->probe)  in sa1111_bus_probe()
1361 		ret = drv->probe(sadev);  in sa1111_bus_probe()
1368 	struct sa1111_driver *drv = SA1111_DRV(dev->driver);  in sa1111_bus_remove()
1370 	if (drv->remove)  in sa1111_bus_remove()
1371 		drv->remove(sadev);  in sa1111_bus_remove()
1375 	.name		= "sa1111-rab",
1384 	driver->drv.bus = &sa1111_bus_type;  in sa1111_driver_register()
1385 	return driver_register(&driver->drv);  in sa1111_driver_register()
1391 	driver_unregister(&driver->drv);  in sa1111_driver_unregister()