98 static void mtk_spi_slave_disable_dma(struct mtk_spi_slave *mdata)  in mtk_spi_slave_disable_dma()  argument
102 	reg_val = readl(mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_disable_dma()
105 	writel(reg_val, mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_disable_dma()
108 static void mtk_spi_slave_disable_xfer(struct mtk_spi_slave *mdata)  in mtk_spi_slave_disable_xfer()  argument
112 	reg_val = readl(mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_disable_xfer()
115 	writel(reg_val, mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_disable_xfer()
118 static int mtk_spi_slave_wait_for_completion(struct mtk_spi_slave *mdata)  in mtk_spi_slave_wait_for_completion()  argument
120 	if (wait_for_completion_interruptible(&mdata->xfer_done) ||  in mtk_spi_slave_wait_for_completion()
121 	    mdata->slave_aborted) {  in mtk_spi_slave_wait_for_completion()
122 		dev_err(mdata->dev, "interrupted\n");  in mtk_spi_slave_wait_for_completion()
132 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_prepare_message()  local
140 	reg_val = readl(mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_prepare_message()
157 	writel(reg_val, mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_prepare_message()
166 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_fifo_transfer()  local
169 	writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_fifo_transfer()
171 	reg_val = readl(mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_fifo_transfer()
176 	writel(reg_val, mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_fifo_transfer()
180 		iowrite32_rep(mdata->base + SPIS_TX_DATA_REG,  in mtk_spi_slave_fifo_transfer()
187 		writel(reg_val, mdata->base + SPIS_TX_DATA_REG);  in mtk_spi_slave_fifo_transfer()
190 	ret = mtk_spi_slave_wait_for_completion(mdata);  in mtk_spi_slave_fifo_transfer()
192 		mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_fifo_transfer()
193 		writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_fifo_transfer()
203 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_dma_transfer()  local
204 	struct device *dev = mdata->dev;  in mtk_spi_slave_dma_transfer()
207 	writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_dma_transfer()
232 	writel(xfer->tx_dma, mdata->base + SPIS_TX_SRC_REG);  in mtk_spi_slave_dma_transfer()
233 	writel(xfer->rx_dma, mdata->base + SPIS_RX_DST_REG);  in mtk_spi_slave_dma_transfer()
235 	writel(SPIS_DMA_ADDR_EN, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_dma_transfer()
238 	reg_val = readl(mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_dma_transfer()
243 	writel(reg_val, mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_dma_transfer()
248 	writel(reg_val, mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_dma_transfer()
250 	reg_val = readl(mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_dma_transfer()
256 	writel(reg_val, mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_dma_transfer()
258 	ret = mtk_spi_slave_wait_for_completion(mdata);  in mtk_spi_slave_dma_transfer()
275 	mtk_spi_slave_disable_dma(mdata);  in mtk_spi_slave_dma_transfer()
276 	mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_dma_transfer()
277 	writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_dma_transfer()
286 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_transfer_one()  local
288 	reinit_completion(&mdata->xfer_done);  in mtk_spi_slave_transfer_one()
289 	mdata->slave_aborted = false;  in mtk_spi_slave_transfer_one()
290 	mdata->cur_transfer = xfer;  in mtk_spi_slave_transfer_one()
292 	if (xfer->len > mdata->dev_comp->max_fifo_size)  in mtk_spi_slave_transfer_one()
300 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(spi->master);  in mtk_spi_slave_setup()  local
305 	writel(reg_val, mdata->base + SPIS_IRQ_EN_REG);  in mtk_spi_slave_setup()
309 	writel(reg_val, mdata->base + SPIS_IRQ_MASK_REG);  in mtk_spi_slave_setup()
311 	mtk_spi_slave_disable_dma(mdata);  in mtk_spi_slave_setup()
312 	mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_setup()
319 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_slave_abort()  local
321 	mdata->slave_aborted = true;  in mtk_slave_abort()
322 	complete(&mdata->xfer_done);  in mtk_slave_abort()
330 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_interrupt()  local
331 	struct spi_transfer *trans = mdata->cur_transfer;  in mtk_spi_slave_interrupt()
334 	int_status = readl(mdata->base + SPIS_IRQ_ST_REG);  in mtk_spi_slave_interrupt()
335 	writel(int_status, mdata->base + SPIS_IRQ_CLR_REG);  in mtk_spi_slave_interrupt()
343 		writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_interrupt()
346 			dma_unmap_single(mdata->dev, trans->tx_dma,  in mtk_spi_slave_interrupt()
349 			dma_unmap_single(mdata->dev, trans->rx_dma,  in mtk_spi_slave_interrupt()
352 		mtk_spi_slave_disable_dma(mdata);  in mtk_spi_slave_interrupt()
353 		mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_interrupt()
361 			ioread32_rep(mdata->base + SPIS_RX_DATA_REG,  in mtk_spi_slave_interrupt()
365 			reg_val = readl(mdata->base + SPIS_RX_DATA_REG);  in mtk_spi_slave_interrupt()
370 		mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_interrupt()
378 	mdata->cur_transfer = NULL;  in mtk_spi_slave_interrupt()
379 	complete(&mdata->xfer_done);  in mtk_spi_slave_interrupt()
387 	struct mtk_spi_slave *mdata;  in mtk_spi_slave_probe()  local
391 	ctlr = spi_alloc_slave(&pdev->dev, sizeof(*mdata));  in mtk_spi_slave_probe()
413 	mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_probe()
414 	mdata->dev_comp = of_id->data;  in mtk_spi_slave_probe()
416 	if (mdata->dev_comp->must_rx)  in mtk_spi_slave_probe()
421 	init_completion(&mdata->xfer_done);  in mtk_spi_slave_probe()
422 	mdata->dev = &pdev->dev;  in mtk_spi_slave_probe()
423 	mdata->base = devm_platform_ioremap_resource(pdev, 0);  in mtk_spi_slave_probe()
424 	if (IS_ERR(mdata->base)) {  in mtk_spi_slave_probe()
425 		ret = PTR_ERR(mdata->base);  in mtk_spi_slave_probe()
442 	mdata->spi_clk = devm_clk_get(&pdev->dev, "spi");  in mtk_spi_slave_probe()
443 	if (IS_ERR(mdata->spi_clk)) {  in mtk_spi_slave_probe()
444 		ret = PTR_ERR(mdata->spi_clk);  in mtk_spi_slave_probe()
449 	ret = clk_prepare_enable(mdata->spi_clk);  in mtk_spi_slave_probe()
461 		clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_probe()
465 	clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_probe()
486 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_suspend()  local
494 		clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_suspend()
502 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_resume()  local
506 		ret = clk_prepare_enable(mdata->spi_clk);  in mtk_spi_slave_resume()
515 		clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_resume()
525 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_runtime_suspend()  local
527 	clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_runtime_suspend()
535 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_runtime_resume()  local
538 	ret = clk_prepare_enable(mdata->spi_clk);  in mtk_spi_slave_runtime_resume()