190 static int rockchip_sfc_reset(struct rockchip_sfc *sfc)  in rockchip_sfc_reset()  argument
195 	writel_relaxed(SFC_RCVR_RESET, sfc->regbase + SFC_RCVR);  in rockchip_sfc_reset()
197 	err = readl_poll_timeout(sfc->regbase + SFC_RCVR, status,  in rockchip_sfc_reset()
201 		dev_err(sfc->dev, "SFC reset never finished\n");  in rockchip_sfc_reset()
204 	writel_relaxed(0xFFFFFFFF, sfc->regbase + SFC_ICLR);  in rockchip_sfc_reset()
206 	dev_dbg(sfc->dev, "reset\n");  in rockchip_sfc_reset()
211 static u16 rockchip_sfc_get_version(struct rockchip_sfc *sfc)  in rockchip_sfc_get_version()  argument
213 	return  (u16)(readl(sfc->regbase + SFC_VER) & 0xffff);  in rockchip_sfc_get_version()
216 static u32 rockchip_sfc_get_max_iosize(struct rockchip_sfc *sfc)  in rockchip_sfc_get_max_iosize()  argument
221 static int rockchip_sfc_clk_set_rate(struct rockchip_sfc *sfc, unsigned long  speed)  in rockchip_sfc_clk_set_rate()  argument
223 	if (sfc->version >= SFC_VER_8)  in rockchip_sfc_clk_set_rate()
224 		return clk_set_rate(sfc->clk, speed * 2);  in rockchip_sfc_clk_set_rate()
226 		return clk_set_rate(sfc->clk, speed);  in rockchip_sfc_clk_set_rate()
229 static unsigned long rockchip_sfc_clk_get_rate(struct rockchip_sfc *sfc)  in rockchip_sfc_clk_get_rate()  argument
231 	if (sfc->version >= SFC_VER_8)  in rockchip_sfc_clk_get_rate()
232 		return clk_get_rate(sfc->clk) / 2;  in rockchip_sfc_clk_get_rate()
234 		return clk_get_rate(sfc->clk);  in rockchip_sfc_clk_get_rate()
237 static void rockchip_sfc_irq_unmask(struct rockchip_sfc *sfc, u32 mask)  in rockchip_sfc_irq_unmask()  argument
242 	reg = readl(sfc->regbase + SFC_IMR);  in rockchip_sfc_irq_unmask()
244 	writel(reg, sfc->regbase + SFC_IMR);  in rockchip_sfc_irq_unmask()
247 static void rockchip_sfc_irq_mask(struct rockchip_sfc *sfc, u32 mask)  in rockchip_sfc_irq_mask()  argument
252 	reg = readl(sfc->regbase + SFC_IMR);  in rockchip_sfc_irq_mask()
254 	writel(reg, sfc->regbase + SFC_IMR);  in rockchip_sfc_irq_mask()
257 static int rockchip_sfc_init(struct rockchip_sfc *sfc)  in rockchip_sfc_init()  argument
259 	writel(0, sfc->regbase + SFC_CTRL);  in rockchip_sfc_init()
260 	writel(0xFFFFFFFF, sfc->regbase + SFC_ICLR);  in rockchip_sfc_init()
261 	rockchip_sfc_irq_mask(sfc, 0xFFFFFFFF);  in rockchip_sfc_init()
262 	if (rockchip_sfc_get_version(sfc) >= SFC_VER_4)  in rockchip_sfc_init()
263 		writel(SFC_LEN_CTRL_TRB_SEL, sfc->regbase + SFC_LEN_CTRL);  in rockchip_sfc_init()
268 static int rockchip_sfc_wait_txfifo_ready(struct rockchip_sfc *sfc, u32 timeout_us)  in rockchip_sfc_wait_txfifo_ready()  argument
273 	ret = readl_poll_timeout(sfc->regbase + SFC_FSR, status,  in rockchip_sfc_wait_txfifo_ready()
277 		dev_dbg(sfc->dev, "sfc wait tx fifo timeout\n");  in rockchip_sfc_wait_txfifo_ready()
285 static int rockchip_sfc_wait_rxfifo_ready(struct rockchip_sfc *sfc, u32 timeout_us)  in rockchip_sfc_wait_rxfifo_ready()  argument
290 	ret = readl_poll_timeout(sfc->regbase + SFC_FSR, status,  in rockchip_sfc_wait_rxfifo_ready()
294 		dev_dbg(sfc->dev, "sfc wait rx fifo timeout\n");  in rockchip_sfc_wait_rxfifo_ready()
306 		 * SFC not support output DUMMY cycles right after CMD cycles, so  in rockchip_sfc_adjust_op_work()
317 static int rockchip_sfc_xfer_setup(struct rockchip_sfc *sfc,  in rockchip_sfc_xfer_setup()  argument
338 			       sfc->regbase + cs * SFC_CS1_REG_OFFSET + SFC_ABIT);  in rockchip_sfc_xfer_setup()
355 	if (sfc->version >= SFC_VER_4) /* Clear it if no data to transfer */  in rockchip_sfc_xfer_setup()
356 		writel(len, sfc->regbase + SFC_LEN_EXT);  in rockchip_sfc_xfer_setup()
372 	dev_dbg(sfc->dev, "sfc addr.nbytes=%x(x%d) dummy.nbytes=%x(x%d)\n",  in rockchip_sfc_xfer_setup()
375 	dev_dbg(sfc->dev, "sfc ctrl=%x cmd=%x addr=%llx len=%x\n",  in rockchip_sfc_xfer_setup()
378 	writel(ctrl, sfc->regbase + cs * SFC_CS1_REG_OFFSET + SFC_CTRL);  in rockchip_sfc_xfer_setup()
379 	writel(cmd, sfc->regbase + SFC_CMD);  in rockchip_sfc_xfer_setup()
381 		writel(op->addr.val, sfc->regbase + SFC_ADDR);  in rockchip_sfc_xfer_setup()
386 static int rockchip_sfc_write_fifo(struct rockchip_sfc *sfc, const u8 *buf, int len)  in rockchip_sfc_write_fifo()  argument
396 		tx_level = rockchip_sfc_wait_txfifo_ready(sfc, 1000);  in rockchip_sfc_write_fifo()
400 		iowrite32_rep(sfc->regbase + SFC_DATA, buf, write_words);  in rockchip_sfc_write_fifo()
407 		tx_level = rockchip_sfc_wait_txfifo_ready(sfc, 1000);  in rockchip_sfc_write_fifo()
411 		writel(tmp, sfc->regbase + SFC_DATA);  in rockchip_sfc_write_fifo()
417 static int rockchip_sfc_read_fifo(struct rockchip_sfc *sfc, u8 *buf, int len)  in rockchip_sfc_read_fifo()  argument
428 		rx_level = rockchip_sfc_wait_rxfifo_ready(sfc, 1000);  in rockchip_sfc_read_fifo()
432 		ioread32_rep(sfc->regbase + SFC_DATA, buf, read_words);  in rockchip_sfc_read_fifo()
439 		rx_level = rockchip_sfc_wait_rxfifo_ready(sfc, 1000);  in rockchip_sfc_read_fifo()
442 		tmp = readl(sfc->regbase + SFC_DATA);  in rockchip_sfc_read_fifo()
449 static int rockchip_sfc_fifo_transfer_dma(struct rockchip_sfc *sfc, dma_addr_t dma_buf, size_t len)  in rockchip_sfc_fifo_transfer_dma()  argument
451 	writel(0xFFFFFFFF, sfc->regbase + SFC_ICLR);  in rockchip_sfc_fifo_transfer_dma()
452 	writel((u32)dma_buf, sfc->regbase + SFC_DMA_ADDR);  in rockchip_sfc_fifo_transfer_dma()
453 	writel(SFC_DMA_TRIGGER_START, sfc->regbase + SFC_DMA_TRIGGER);  in rockchip_sfc_fifo_transfer_dma()
458 static int rockchip_sfc_xfer_data_poll(struct rockchip_sfc *sfc,  in rockchip_sfc_xfer_data_poll()  argument
461 	dev_dbg(sfc->dev, "sfc xfer_poll len=%x\n", len);  in rockchip_sfc_xfer_data_poll()
464 		return rockchip_sfc_write_fifo(sfc, op->data.buf.out, len);  in rockchip_sfc_xfer_data_poll()
466 		return rockchip_sfc_read_fifo(sfc, op->data.buf.in, len);  in rockchip_sfc_xfer_data_poll()
469 static int rockchip_sfc_xfer_data_dma(struct rockchip_sfc *sfc,  in rockchip_sfc_xfer_data_dma()  argument
474 	dev_dbg(sfc->dev, "sfc xfer_dma len=%x\n", len);  in rockchip_sfc_xfer_data_dma()
477 		memcpy(sfc->buffer, op->data.buf.out, len);  in rockchip_sfc_xfer_data_dma()
478 		dma_sync_single_for_device(sfc->dev, sfc->dma_buffer, len, DMA_TO_DEVICE);  in rockchip_sfc_xfer_data_dma()
481 	ret = rockchip_sfc_fifo_transfer_dma(sfc, sfc->dma_buffer, len);  in rockchip_sfc_xfer_data_dma()
482 	if (!wait_for_completion_timeout(&sfc->cp, msecs_to_jiffies(2000))) {  in rockchip_sfc_xfer_data_dma()
483 		dev_err(sfc->dev, "DMA wait for transfer finish timeout\n");  in rockchip_sfc_xfer_data_dma()
486 	rockchip_sfc_irq_mask(sfc, SFC_IMR_DMA);  in rockchip_sfc_xfer_data_dma()
489 		dma_sync_single_for_cpu(sfc->dev, sfc->dma_buffer, len, DMA_FROM_DEVICE);  in rockchip_sfc_xfer_data_dma()
490 		memcpy(op->data.buf.in, sfc->buffer, len);  in rockchip_sfc_xfer_data_dma()
496 static int rockchip_sfc_xfer_done(struct rockchip_sfc *sfc, u32 timeout_us)  in rockchip_sfc_xfer_done()  argument
505 	ret = readl_poll_timeout(sfc->regbase + SFC_SR, status,  in rockchip_sfc_xfer_done()
511 	ret = readl_poll_timeout(sfc->regbase + SFC_SR, status,  in rockchip_sfc_xfer_done()
515 		dev_err(sfc->dev, "wait sfc idle timeout\n");  in rockchip_sfc_xfer_done()
516 		rockchip_sfc_reset(sfc);  in rockchip_sfc_xfer_done()
526 	struct rockchip_sfc *sfc = spi_controller_get_devdata(mem->spi->controller);  in rockchip_sfc_exec_mem_op()  local
531 	ret = pm_runtime_get_sync(sfc->dev);  in rockchip_sfc_exec_mem_op()
533 		pm_runtime_put_noidle(sfc->dev);  in rockchip_sfc_exec_mem_op()
537 	if (unlikely(op->max_freq != sfc->speed[cs]) &&  in rockchip_sfc_exec_mem_op()
538 	    !has_acpi_companion(sfc->dev)) {  in rockchip_sfc_exec_mem_op()
539 		ret = rockchip_sfc_clk_set_rate(sfc, op->max_freq);  in rockchip_sfc_exec_mem_op()
542 		sfc->speed[cs] = op->max_freq;  in rockchip_sfc_exec_mem_op()
543 		dev_dbg(sfc->dev, "set_freq=%dHz real_freq=%ldHz\n",  in rockchip_sfc_exec_mem_op()
544 			sfc->speed[cs], rockchip_sfc_clk_get_rate(sfc));  in rockchip_sfc_exec_mem_op()
548 	rockchip_sfc_xfer_setup(sfc, mem, op, len);  in rockchip_sfc_exec_mem_op()
550 		if (likely(sfc->use_dma) && len >= SFC_DMA_TRANS_THRETHOLD && !(len & 0x3)) {  in rockchip_sfc_exec_mem_op()
551 			init_completion(&sfc->cp);  in rockchip_sfc_exec_mem_op()
552 			rockchip_sfc_irq_unmask(sfc, SFC_IMR_DMA);  in rockchip_sfc_exec_mem_op()
553 			ret = rockchip_sfc_xfer_data_dma(sfc, op, len);  in rockchip_sfc_exec_mem_op()
555 			ret = rockchip_sfc_xfer_data_poll(sfc, op, len);  in rockchip_sfc_exec_mem_op()
559 			dev_err(sfc->dev, "xfer data failed ret %d dir %d\n", ret, op->data.dir);  in rockchip_sfc_exec_mem_op()
566 	ret = rockchip_sfc_xfer_done(sfc, 100000);  in rockchip_sfc_exec_mem_op()
568 	pm_runtime_mark_last_busy(sfc->dev);  in rockchip_sfc_exec_mem_op()
569 	pm_runtime_put_autosuspend(sfc->dev);  in rockchip_sfc_exec_mem_op()
576 	struct rockchip_sfc *sfc = spi_controller_get_devdata(mem->spi->controller);  in rockchip_sfc_adjust_op_size()  local
578 	op->data.nbytes = min(op->data.nbytes, sfc->max_iosize);  in rockchip_sfc_adjust_op_size()
594 	struct rockchip_sfc *sfc = dev_id;  in rockchip_sfc_irq_handler()  local
597 	reg = readl(sfc->regbase + SFC_RISR);  in rockchip_sfc_irq_handler()
600 	writel_relaxed(reg, sfc->regbase + SFC_ICLR);  in rockchip_sfc_irq_handler()
603 		complete(&sfc->cp);  in rockchip_sfc_irq_handler()
615 	struct rockchip_sfc *sfc;  in rockchip_sfc_probe()  local
619 	host = devm_spi_alloc_host(&pdev->dev, sizeof(*sfc));  in rockchip_sfc_probe()
631 	sfc = spi_controller_get_devdata(host);  in rockchip_sfc_probe()
632 	sfc->dev = dev;  in rockchip_sfc_probe()
633 	sfc->host = host;  in rockchip_sfc_probe()
635 	sfc->regbase = devm_platform_ioremap_resource(pdev, 0);  in rockchip_sfc_probe()
636 	if (IS_ERR(sfc->regbase))  in rockchip_sfc_probe()
637 		return PTR_ERR(sfc->regbase);  in rockchip_sfc_probe()
640 		sfc->clk = devm_clk_get(&pdev->dev, "clk_sfc");  in rockchip_sfc_probe()
641 	if (IS_ERR(sfc->clk))  in rockchip_sfc_probe()
642 		return dev_err_probe(&pdev->dev, PTR_ERR(sfc->clk),  in rockchip_sfc_probe()
643 				     "Failed to get sfc interface clk\n");  in rockchip_sfc_probe()
646 		sfc->hclk = devm_clk_get(&pdev->dev, "hclk_sfc");  in rockchip_sfc_probe()
647 	if (IS_ERR(sfc->hclk))  in rockchip_sfc_probe()
648 		return dev_err_probe(&pdev->dev, PTR_ERR(sfc->hclk),  in rockchip_sfc_probe()
649 				     "Failed to get sfc ahb clk\n");  in rockchip_sfc_probe()
657 			sfc->speed[i] = val;  in rockchip_sfc_probe()
660 	sfc->use_dma = !of_property_read_bool(sfc->dev->of_node, "rockchip,sfc-no-dma");  in rockchip_sfc_probe()
662 	ret = clk_prepare_enable(sfc->hclk);  in rockchip_sfc_probe()
668 	ret = clk_prepare_enable(sfc->clk);  in rockchip_sfc_probe()
680 			       0, pdev->name, sfc);  in rockchip_sfc_probe()
686 	platform_set_drvdata(pdev, sfc);  in rockchip_sfc_probe()
688 	ret = rockchip_sfc_init(sfc);  in rockchip_sfc_probe()
692 	sfc->version = rockchip_sfc_get_version(sfc);  in rockchip_sfc_probe()
693 	sfc->max_iosize = rockchip_sfc_get_max_iosize(sfc);  in rockchip_sfc_probe()
701 	if (sfc->use_dma) {  in rockchip_sfc_probe()
702 		sfc->buffer = (u8 *)__get_free_pages(GFP_KERNEL | GFP_DMA32,  in rockchip_sfc_probe()
703 						     get_order(sfc->max_iosize));  in rockchip_sfc_probe()
704 		if (!sfc->buffer) {  in rockchip_sfc_probe()
708 		sfc->dma_buffer = virt_to_phys(sfc->buffer);  in rockchip_sfc_probe()
720 	free_pages((unsigned long)sfc->buffer, get_order(sfc->max_iosize));  in rockchip_sfc_probe()
728 	clk_disable_unprepare(sfc->clk);  in rockchip_sfc_probe()
730 	clk_disable_unprepare(sfc->hclk);  in rockchip_sfc_probe()
737 	struct rockchip_sfc *sfc = platform_get_drvdata(pdev);  in rockchip_sfc_remove()  local
738 	struct spi_controller *host = sfc->host;  in rockchip_sfc_remove()
741 	free_pages((unsigned long)sfc->buffer, get_order(sfc->max_iosize));  in rockchip_sfc_remove()
743 	clk_disable_unprepare(sfc->clk);  in rockchip_sfc_remove()
744 	clk_disable_unprepare(sfc->hclk);  in rockchip_sfc_remove()
750 	struct rockchip_sfc *sfc = dev_get_drvdata(dev);  in rockchip_sfc_runtime_suspend()  local
752 	clk_disable_unprepare(sfc->clk);  in rockchip_sfc_runtime_suspend()
753 	clk_disable_unprepare(sfc->hclk);  in rockchip_sfc_runtime_suspend()
760 	struct rockchip_sfc *sfc = dev_get_drvdata(dev);  in rockchip_sfc_runtime_resume()  local
763 	ret = clk_prepare_enable(sfc->hclk);  in rockchip_sfc_runtime_resume()
767 	ret = clk_prepare_enable(sfc->clk);  in rockchip_sfc_runtime_resume()
769 		clk_disable_unprepare(sfc->hclk);  in rockchip_sfc_runtime_resume()
785 	struct rockchip_sfc *sfc = dev_get_drvdata(dev);  in rockchip_sfc_resume()  local
800 	rockchip_sfc_init(sfc);  in rockchip_sfc_resume()
816 	{ .compatible = "rockchip,sfc"},
823 		.name	= "rockchip-sfc",