81 static void mtk_spi_slave_disable_dma(struct mtk_spi_slave *mdata)  in mtk_spi_slave_disable_dma()  argument
85 	reg_val = readl(mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_disable_dma()
88 	writel(reg_val, mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_disable_dma()
91 static void mtk_spi_slave_disable_xfer(struct mtk_spi_slave *mdata)  in mtk_spi_slave_disable_xfer()  argument
95 	reg_val = readl(mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_disable_xfer()
98 	writel(reg_val, mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_disable_xfer()
101 static int mtk_spi_slave_wait_for_completion(struct mtk_spi_slave *mdata)  in mtk_spi_slave_wait_for_completion()  argument
103 	if (wait_for_completion_interruptible(&mdata->xfer_done) ||  in mtk_spi_slave_wait_for_completion()
104 	    mdata->slave_aborted) {  in mtk_spi_slave_wait_for_completion()
105 		dev_err(mdata->dev, "interrupted\n");  in mtk_spi_slave_wait_for_completion()
115 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_prepare_message()  local
123 	reg_val = readl(mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_prepare_message()
140 	writel(reg_val, mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_prepare_message()
149 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_fifo_transfer()  local
152 	writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_fifo_transfer()
154 	reg_val = readl(mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_fifo_transfer()
159 	writel(reg_val, mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_fifo_transfer()
163 		iowrite32_rep(mdata->base + SPIS_TX_DATA_REG,  in mtk_spi_slave_fifo_transfer()
170 		writel(reg_val, mdata->base + SPIS_TX_DATA_REG);  in mtk_spi_slave_fifo_transfer()
173 	ret = mtk_spi_slave_wait_for_completion(mdata);  in mtk_spi_slave_fifo_transfer()
175 		mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_fifo_transfer()
176 		writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_fifo_transfer()
186 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_dma_transfer()  local
187 	struct device *dev = mdata->dev;  in mtk_spi_slave_dma_transfer()
190 	writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_dma_transfer()
215 	writel(xfer->tx_dma, mdata->base + SPIS_TX_SRC_REG);  in mtk_spi_slave_dma_transfer()
216 	writel(xfer->rx_dma, mdata->base + SPIS_RX_DST_REG);  in mtk_spi_slave_dma_transfer()
218 	writel(SPIS_DMA_ADDR_EN, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_dma_transfer()
221 	reg_val = readl(mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_dma_transfer()
226 	writel(reg_val, mdata->base + SPIS_CFG_REG);  in mtk_spi_slave_dma_transfer()
231 	writel(reg_val, mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_dma_transfer()
233 	reg_val = readl(mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_dma_transfer()
239 	writel(reg_val, mdata->base + SPIS_DMA_CFG_REG);  in mtk_spi_slave_dma_transfer()
241 	ret = mtk_spi_slave_wait_for_completion(mdata);  in mtk_spi_slave_dma_transfer()
258 	mtk_spi_slave_disable_dma(mdata);  in mtk_spi_slave_dma_transfer()
259 	mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_dma_transfer()
260 	writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_dma_transfer()
269 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_transfer_one()  local
271 	reinit_completion(&mdata->xfer_done);  in mtk_spi_slave_transfer_one()
272 	mdata->slave_aborted = false;  in mtk_spi_slave_transfer_one()
273 	mdata->cur_transfer = xfer;  in mtk_spi_slave_transfer_one()
283 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(spi->master);  in mtk_spi_slave_setup()  local
288 	writel(reg_val, mdata->base + SPIS_IRQ_EN_REG);  in mtk_spi_slave_setup()
292 	writel(reg_val, mdata->base + SPIS_IRQ_MASK_REG);  in mtk_spi_slave_setup()
294 	mtk_spi_slave_disable_dma(mdata);  in mtk_spi_slave_setup()
295 	mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_setup()
302 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_slave_abort()  local
304 	mdata->slave_aborted = true;  in mtk_slave_abort()
305 	complete(&mdata->xfer_done);  in mtk_slave_abort()
313 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_interrupt()  local
314 	struct spi_transfer *trans = mdata->cur_transfer;  in mtk_spi_slave_interrupt()
317 	int_status = readl(mdata->base + SPIS_IRQ_ST_REG);  in mtk_spi_slave_interrupt()
318 	writel(int_status, mdata->base + SPIS_IRQ_CLR_REG);  in mtk_spi_slave_interrupt()
326 		writel(SPIS_SOFT_RST, mdata->base + SPIS_SOFT_RST_REG);  in mtk_spi_slave_interrupt()
329 			dma_unmap_single(mdata->dev, trans->tx_dma,  in mtk_spi_slave_interrupt()
332 			dma_unmap_single(mdata->dev, trans->rx_dma,  in mtk_spi_slave_interrupt()
335 		mtk_spi_slave_disable_dma(mdata);  in mtk_spi_slave_interrupt()
336 		mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_interrupt()
344 			ioread32_rep(mdata->base + SPIS_RX_DATA_REG,  in mtk_spi_slave_interrupt()
348 			reg_val = readl(mdata->base + SPIS_RX_DATA_REG);  in mtk_spi_slave_interrupt()
353 		mtk_spi_slave_disable_xfer(mdata);  in mtk_spi_slave_interrupt()
361 	mdata->cur_transfer = NULL;  in mtk_spi_slave_interrupt()
362 	complete(&mdata->xfer_done);  in mtk_spi_slave_interrupt()
370 	struct mtk_spi_slave *mdata;  in mtk_spi_slave_probe()  local
374 	ctlr = spi_alloc_slave(&pdev->dev, sizeof(*mdata));  in mtk_spi_slave_probe()
390 	mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_probe()
394 	init_completion(&mdata->xfer_done);  in mtk_spi_slave_probe()
403 	mdata->dev = &pdev->dev;  in mtk_spi_slave_probe()
405 	mdata->base = devm_ioremap_resource(&pdev->dev, res);  in mtk_spi_slave_probe()
406 	if (IS_ERR(mdata->base)) {  in mtk_spi_slave_probe()
407 		ret = PTR_ERR(mdata->base);  in mtk_spi_slave_probe()
424 	mdata->spi_clk = devm_clk_get(&pdev->dev, "spi");  in mtk_spi_slave_probe()
425 	if (IS_ERR(mdata->spi_clk)) {  in mtk_spi_slave_probe()
426 		ret = PTR_ERR(mdata->spi_clk);  in mtk_spi_slave_probe()
431 	ret = clk_prepare_enable(mdata->spi_clk);  in mtk_spi_slave_probe()
443 		clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_probe()
447 	clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_probe()
470 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_suspend()  local
478 		clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_suspend()
486 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_resume()  local
490 		ret = clk_prepare_enable(mdata->spi_clk);  in mtk_spi_slave_resume()
499 		clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_resume()
509 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_runtime_suspend()  local
511 	clk_disable_unprepare(mdata->spi_clk);  in mtk_spi_slave_runtime_suspend()
519 	struct mtk_spi_slave *mdata = spi_controller_get_devdata(ctlr);  in mtk_spi_slave_runtime_resume()  local
522 	ret = clk_prepare_enable(mdata->spi_clk);  in mtk_spi_slave_runtime_resume()