4  * SPDX-License-Identifier: GPL-2.0
37 #define REG_ADI_CHN_ADDR(id)		(0x44 + (id - 2) * 4)
54  * ADI slave devices include RTC, ADC, regulator, charger, thermal and so on.
160 	if (reg >= sadi->data->slave_addr_size) {  in sprd_adi_check_addr()
161 		dev_err(sadi->dev,  in sprd_adi_check_addr()
164 		return -EINVAL;  in sprd_adi_check_addr()
176 		sts = readl_relaxed(sadi->base + REG_ADI_ARM_FIFO_STS);  in sprd_adi_drain_fifo()
181 	} while (--timeout);  in sprd_adi_drain_fifo()
184 		dev_err(sadi->dev, "drain write fifo timeout\n");  in sprd_adi_drain_fifo()
185 		return -EBUSY;  in sprd_adi_drain_fifo()
193 	return readl_relaxed(sadi->base + REG_ADI_ARM_FIFO_STS) & BIT_FIFO_FULL;  in sprd_adi_fifo_is_full()
204 		return -EIO;  in sprd_adi_read_check()
227 	if (sadi->hwlock) {  in sprd_adi_read()
228 		ret = hwspin_lock_timeout_irqsave(sadi->hwlock,  in sprd_adi_read()
232 			dev_err(sadi->dev, "get the hw lock failed\n");  in sprd_adi_read()
245 	writel_relaxed(reg, sadi->base + REG_ADI_RD_CMD);  in sprd_adi_read()
254 		val = readl_relaxed(sadi->base + REG_ADI_RD_DATA);  in sprd_adi_read()
259 	} while (--read_timeout);  in sprd_adi_read()
262 		dev_err(sadi->dev, "ADI read timeout\n");  in sprd_adi_read()
263 		ret = -EBUSY;  in sprd_adi_read()
273 	if (sadi->data->read_check) {  in sprd_adi_read()
274 		ret = sadi->data->read_check(val, reg);  in sprd_adi_read()
282 	if (sadi->hwlock)  in sprd_adi_read()
283 		hwspin_unlock_irqrestore(sadi->hwlock, &flags);  in sprd_adi_read()
293 	if (sadi->hwlock) {  in sprd_adi_write()
294 		ret = hwspin_lock_timeout_irqsave(sadi->hwlock,  in sprd_adi_write()
298 			dev_err(sadi->dev, "get the hw lock failed\n");  in sprd_adi_write()
318 			writel_relaxed(val, (void __iomem *)(sadi->slave_vbase + reg));  in sprd_adi_write()
323 	} while (--timeout);  in sprd_adi_write()
326 		dev_err(sadi->dev, "write fifo is full\n");  in sprd_adi_write()
327 		ret = -EBUSY;  in sprd_adi_write()
331 	if (sadi->hwlock)  in sprd_adi_write()
332 		hwspin_unlock_irqrestore(sadi->hwlock, &flags);  in sprd_adi_write()
344 	if (t->rx_buf) {  in sprd_adi_transfer_one()
345 		reg = *(u32 *)t->rx_buf;  in sprd_adi_transfer_one()
347 		*(u32 *)t->rx_buf = val;  in sprd_adi_transfer_one()
348 	} else if (t->tx_buf) {  in sprd_adi_transfer_one()
349 		u32 *p = (u32 *)t->tx_buf;  in sprd_adi_transfer_one()
354 		dev_err(sadi->dev, "no buffer for transfer\n");  in sprd_adi_transfer_one()
355 		ret = -EINVAL;  in sprd_adi_transfer_one()
411 	sprd_adi_read(sadi, wdg->rst_sts, &val);  in sprd_adi_restart()
414 	sprd_adi_write(sadi, wdg->rst_sts, val);  in sprd_adi_restart()
417 	sprd_adi_read(sadi, wdg->wdg_en, &val);  in sprd_adi_restart()
419 	sprd_adi_write(sadi, wdg->wdg_en, val);  in sprd_adi_restart()
422 	sprd_adi_read(sadi, wdg->wdg_clk, &val);  in sprd_adi_restart()
424 	sprd_adi_write(sadi, wdg->wdg_clk, val);  in sprd_adi_restart()
427 	sprd_adi_write(sadi, wdg->base + REG_WDG_LOCK, WDG_UNLOCK_KEY);  in sprd_adi_restart()
429 	sprd_adi_read(sadi, wdg->base + REG_WDG_CTRL, &val);  in sprd_adi_restart()
431 	sprd_adi_write(sadi, wdg->base + REG_WDG_CTRL, val);  in sprd_adi_restart()
434 	sprd_adi_write(sadi, wdg->base + REG_WDG_LOAD_HIGH, 0);  in sprd_adi_restart()
435 	sprd_adi_write(sadi, wdg->base + REG_WDG_LOAD_LOW,  in sprd_adi_restart()
439 	sprd_adi_read(sadi, wdg->base + REG_WDG_CTRL, &val);  in sprd_adi_restart()
441 	sprd_adi_write(sadi, wdg->base + REG_WDG_CTRL, val);  in sprd_adi_restart()
444 	sprd_adi_write(sadi, wdg->base + REG_WDG_LOCK, ~WDG_UNLOCK_KEY);  in sprd_adi_restart()
448 	dev_emerg(sadi->dev, "Unable to restart system\n");  in sprd_adi_restart()
467 	struct device_node *np = sadi->dev->of_node;  in sprd_adi_hw_init()
473 	writel_relaxed(0, sadi->base + REG_ADI_CHN_PRIL);  in sprd_adi_hw_init()
474 	writel_relaxed(0, sadi->base + REG_ADI_CHN_PRIH);  in sprd_adi_hw_init()
477 	tmp = readl_relaxed(sadi->base + REG_ADI_GSSI_CFG0);  in sprd_adi_hw_init()
479 	writel_relaxed(tmp, sadi->base + REG_ADI_GSSI_CFG0);  in sprd_adi_hw_init()
482 	list = of_get_property(np, "sprd,hw-channels", &size);  in sprd_adi_hw_init()
484 		dev_info(sadi->dev, "no hw channels setting in node\n");  in sprd_adi_hw_init()
498 		writel_relaxed(chn_config, sadi->base +  in sprd_adi_hw_init()
502 			value = readl_relaxed(sadi->base + REG_ADI_CHN_EN);  in sprd_adi_hw_init()
504 			writel_relaxed(value, sadi->base + REG_ADI_CHN_EN);  in sprd_adi_hw_init()
506 			value = readl_relaxed(sadi->base + REG_ADI_CHN_EN1);  in sprd_adi_hw_init()
507 			value |= BIT(chn_id - 32);  in sprd_adi_hw_init()
508 			writel_relaxed(value, sadi->base + REG_ADI_CHN_EN1);  in sprd_adi_hw_init()
515 	struct device_node *np = pdev->dev.of_node;  in sprd_adi_probe()
524 		dev_err(&pdev->dev, "can not find the adi bus node\n");  in sprd_adi_probe()
525 		return -ENODEV;  in sprd_adi_probe()
528 	data = of_device_get_match_data(&pdev->dev);  in sprd_adi_probe()
530 		dev_err(&pdev->dev, "no matching driver data found\n");  in sprd_adi_probe()
531 		return -EINVAL;  in sprd_adi_probe()
534 	pdev->id = of_alias_get_id(np, "spi");  in sprd_adi_probe()
537 	ctlr = spi_alloc_master(&pdev->dev, sizeof(struct sprd_adi));  in sprd_adi_probe()
539 		return -ENOMEM;  in sprd_adi_probe()
541 	dev_set_drvdata(&pdev->dev, ctlr);  in sprd_adi_probe()
545 	sadi->base = devm_ioremap_resource(&pdev->dev, res);  in sprd_adi_probe()
546 	if (IS_ERR(sadi->base)) {  in sprd_adi_probe()
547 		ret = PTR_ERR(sadi->base);  in sprd_adi_probe()
551 	sadi->slave_vbase = (unsigned long)sadi->base +  in sprd_adi_probe()
552 			    data->slave_offset;  in sprd_adi_probe()
553 	sadi->slave_pbase = res->start + data->slave_offset;  in sprd_adi_probe()
554 	sadi->ctlr = ctlr;  in sprd_adi_probe()
555 	sadi->dev = &pdev->dev;  in sprd_adi_probe()
556 	sadi->data = data;  in sprd_adi_probe()
559 		sadi->hwlock =  in sprd_adi_probe()
560 			devm_hwspin_lock_request_specific(&pdev->dev, ret);  in sprd_adi_probe()
561 		if (!sadi->hwlock) {  in sprd_adi_probe()
562 			ret = -ENXIO;  in sprd_adi_probe()
567 		case -ENOENT:  in sprd_adi_probe()
568 			dev_info(&pdev->dev, "no hardware spinlock supplied\n");  in sprd_adi_probe()
571 			dev_err_probe(&pdev->dev, ret, "failed to find hwlock id\n");  in sprd_adi_probe()
578 	if (sadi->data->wdg_rst)  in sprd_adi_probe()
579 		sadi->data->wdg_rst(sadi);  in sprd_adi_probe()
581 	ctlr->dev.of_node = pdev->dev.of_node;  in sprd_adi_probe()
582 	ctlr->bus_num = pdev->id;  in sprd_adi_probe()
583 	ctlr->num_chipselect = num_chipselect;  in sprd_adi_probe()
584 	ctlr->flags = SPI_MASTER_HALF_DUPLEX;  in sprd_adi_probe()
585 	ctlr->bits_per_word_mask = 0;  in sprd_adi_probe()
586 	ctlr->transfer_one = sprd_adi_transfer_one;  in sprd_adi_probe()
588 	ret = devm_spi_register_controller(&pdev->dev, ctlr);  in sprd_adi_probe()
590 		dev_err(&pdev->dev, "failed to register SPI controller\n");  in sprd_adi_probe()
594 	if (sadi->data->restart) {  in sprd_adi_probe()
595 		sadi->restart_handler.notifier_call = sadi->data->restart;  in sprd_adi_probe()
596 		sadi->restart_handler.priority = 128;  in sprd_adi_probe()
597 		ret = register_restart_handler(&sadi->restart_handler);  in sprd_adi_probe()
599 			dev_err(&pdev->dev, "can not register restart handler\n");  in sprd_adi_probe()
613 	struct spi_controller *ctlr = dev_get_drvdata(&pdev->dev);  in sprd_adi_remove()
616 	unregister_restart_handler(&sadi->restart_handler);  in sprd_adi_remove()
642 		.compatible = "sprd,sc9860-adi",
646 		.compatible = "sprd,sc9863-adi",
650 		.compatible = "sprd,ums512-adi",
659 		.name = "sprd-adi",