68 struct mcfqspi {  struct
77 static void mcfqspi_wr_qmr(struct mcfqspi *mcfqspi, u16 val)  in mcfqspi_wr_qmr()  argument
79 	writew(val, mcfqspi->iobase + MCFQSPI_QMR);  in mcfqspi_wr_qmr()
82 static void mcfqspi_wr_qdlyr(struct mcfqspi *mcfqspi, u16 val)  in mcfqspi_wr_qdlyr()  argument
84 	writew(val, mcfqspi->iobase + MCFQSPI_QDLYR);  in mcfqspi_wr_qdlyr()
87 static u16 mcfqspi_rd_qdlyr(struct mcfqspi *mcfqspi)  in mcfqspi_rd_qdlyr()  argument
89 	return readw(mcfqspi->iobase + MCFQSPI_QDLYR);  in mcfqspi_rd_qdlyr()
92 static void mcfqspi_wr_qwr(struct mcfqspi *mcfqspi, u16 val)  in mcfqspi_wr_qwr()  argument
94 	writew(val, mcfqspi->iobase + MCFQSPI_QWR);  in mcfqspi_wr_qwr()
97 static void mcfqspi_wr_qir(struct mcfqspi *mcfqspi, u16 val)  in mcfqspi_wr_qir()  argument
99 	writew(val, mcfqspi->iobase + MCFQSPI_QIR);  in mcfqspi_wr_qir()
102 static void mcfqspi_wr_qar(struct mcfqspi *mcfqspi, u16 val)  in mcfqspi_wr_qar()  argument
104 	writew(val, mcfqspi->iobase + MCFQSPI_QAR);  in mcfqspi_wr_qar()
107 static void mcfqspi_wr_qdr(struct mcfqspi *mcfqspi, u16 val)  in mcfqspi_wr_qdr()  argument
109 	writew(val, mcfqspi->iobase + MCFQSPI_QDR);  in mcfqspi_wr_qdr()
112 static u16 mcfqspi_rd_qdr(struct mcfqspi *mcfqspi)  in mcfqspi_rd_qdr()  argument
114 	return readw(mcfqspi->iobase + MCFQSPI_QDR);  in mcfqspi_rd_qdr()
117 static void mcfqspi_cs_select(struct mcfqspi *mcfqspi, u8 chip_select,  in mcfqspi_cs_select()  argument
120 	mcfqspi->cs_control->select(mcfqspi->cs_control, chip_select, cs_high);  in mcfqspi_cs_select()
123 static void mcfqspi_cs_deselect(struct mcfqspi *mcfqspi, u8 chip_select,  in mcfqspi_cs_deselect()  argument
126 	mcfqspi->cs_control->deselect(mcfqspi->cs_control, chip_select, cs_high);  in mcfqspi_cs_deselect()
129 static int mcfqspi_cs_setup(struct mcfqspi *mcfqspi)  in mcfqspi_cs_setup()  argument
131 	return (mcfqspi->cs_control->setup) ?  in mcfqspi_cs_setup()
132 		mcfqspi->cs_control->setup(mcfqspi->cs_control) : 0;  in mcfqspi_cs_setup()
135 static void mcfqspi_cs_teardown(struct mcfqspi *mcfqspi)  in mcfqspi_cs_teardown()  argument
137 	if (mcfqspi->cs_control->teardown)  in mcfqspi_cs_teardown()
138 		mcfqspi->cs_control->teardown(mcfqspi->cs_control);  in mcfqspi_cs_teardown()
146 static bool mcfqspi_qdlyr_spe(struct mcfqspi *mcfqspi)  in mcfqspi_qdlyr_spe()  argument
148 	return mcfqspi_rd_qdlyr(mcfqspi) & MCFQSPI_QDLYR_SPE;  in mcfqspi_qdlyr_spe()
153 	struct mcfqspi *mcfqspi = dev_id;  in mcfqspi_irq_handler()  local
156 	mcfqspi_wr_qir(mcfqspi, MCFQSPI_QIR_SPIFE | MCFQSPI_QIR_SPIF);  in mcfqspi_irq_handler()
157 	wake_up(&mcfqspi->waitq);  in mcfqspi_irq_handler()
162 static void mcfqspi_transfer_msg8(struct mcfqspi *mcfqspi, unsigned count,  in mcfqspi_transfer_msg8()  argument
169 	mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_CMDBUF);  in mcfqspi_transfer_msg8()
171 		mcfqspi_wr_qdr(mcfqspi, MCFQSPI_QCR_BITSE);  in mcfqspi_transfer_msg8()
173 	mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_TXBUF);  in mcfqspi_transfer_msg8()
176 			mcfqspi_wr_qdr(mcfqspi, *txbuf++);  in mcfqspi_transfer_msg8()
179 			mcfqspi_wr_qdr(mcfqspi, 0);  in mcfqspi_transfer_msg8()
184 		mcfqspi_wr_qwr(mcfqspi, 0x700);  in mcfqspi_transfer_msg8()
185 		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);  in mcfqspi_transfer_msg8()
188 			wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));  in mcfqspi_transfer_msg8()
189 			mcfqspi_wr_qwr(mcfqspi, qwr);  in mcfqspi_transfer_msg8()
190 			mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);  in mcfqspi_transfer_msg8()
192 				mcfqspi_wr_qar(mcfqspi,  in mcfqspi_transfer_msg8()
195 					*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);  in mcfqspi_transfer_msg8()
199 				mcfqspi_wr_qar(mcfqspi,  in mcfqspi_transfer_msg8()
202 					mcfqspi_wr_qdr(mcfqspi, *txbuf++);  in mcfqspi_transfer_msg8()
208 		wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));  in mcfqspi_transfer_msg8()
209 		mcfqspi_wr_qwr(mcfqspi, qwr);  in mcfqspi_transfer_msg8()
210 		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);  in mcfqspi_transfer_msg8()
212 			mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_RXBUF + offset);  in mcfqspi_transfer_msg8()
214 				*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);  in mcfqspi_transfer_msg8()
218 		mcfqspi_wr_qwr(mcfqspi, (n - 1) << 8);  in mcfqspi_transfer_msg8()
219 		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);  in mcfqspi_transfer_msg8()
221 	wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));  in mcfqspi_transfer_msg8()
223 		mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_RXBUF + offset);  in mcfqspi_transfer_msg8()
225 			*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);  in mcfqspi_transfer_msg8()
229 static void mcfqspi_transfer_msg16(struct mcfqspi *mcfqspi, unsigned count,  in mcfqspi_transfer_msg16()  argument
236 	mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_CMDBUF);  in mcfqspi_transfer_msg16()
238 		mcfqspi_wr_qdr(mcfqspi, MCFQSPI_QCR_BITSE);  in mcfqspi_transfer_msg16()
240 	mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_TXBUF);  in mcfqspi_transfer_msg16()
243 			mcfqspi_wr_qdr(mcfqspi, *txbuf++);  in mcfqspi_transfer_msg16()
246 			mcfqspi_wr_qdr(mcfqspi, 0);  in mcfqspi_transfer_msg16()
251 		mcfqspi_wr_qwr(mcfqspi, 0x700);  in mcfqspi_transfer_msg16()
252 		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);  in mcfqspi_transfer_msg16()
255 			wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));  in mcfqspi_transfer_msg16()
256 			mcfqspi_wr_qwr(mcfqspi, qwr);  in mcfqspi_transfer_msg16()
257 			mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);  in mcfqspi_transfer_msg16()
259 				mcfqspi_wr_qar(mcfqspi,  in mcfqspi_transfer_msg16()
262 					*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);  in mcfqspi_transfer_msg16()
266 				mcfqspi_wr_qar(mcfqspi,  in mcfqspi_transfer_msg16()
269 					mcfqspi_wr_qdr(mcfqspi, *txbuf++);  in mcfqspi_transfer_msg16()
275 		wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));  in mcfqspi_transfer_msg16()
276 		mcfqspi_wr_qwr(mcfqspi, qwr);  in mcfqspi_transfer_msg16()
277 		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);  in mcfqspi_transfer_msg16()
279 			mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_RXBUF + offset);  in mcfqspi_transfer_msg16()
281 				*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);  in mcfqspi_transfer_msg16()
285 		mcfqspi_wr_qwr(mcfqspi, (n - 1) << 8);  in mcfqspi_transfer_msg16()
286 		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);  in mcfqspi_transfer_msg16()
288 	wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));  in mcfqspi_transfer_msg16()
290 		mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_RXBUF + offset);  in mcfqspi_transfer_msg16()
292 			*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);  in mcfqspi_transfer_msg16()
298 	struct mcfqspi *mcfqspi = spi_master_get_devdata(spi->master);  in mcfqspi_set_cs()  local
302 		mcfqspi_cs_select(mcfqspi, spi->chip_select, cs_high);  in mcfqspi_set_cs()
304 		mcfqspi_cs_deselect(mcfqspi, spi->chip_select, cs_high);  in mcfqspi_set_cs()
311 	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);  in mcfqspi_transfer_one()  local
320 	mcfqspi_wr_qmr(mcfqspi, qmr);  in mcfqspi_transfer_one()
322 	mcfqspi_wr_qir(mcfqspi, MCFQSPI_QIR_SPIFE);  in mcfqspi_transfer_one()
324 		mcfqspi_transfer_msg8(mcfqspi, t->len, t->tx_buf, t->rx_buf);  in mcfqspi_transfer_one()
326 		mcfqspi_transfer_msg16(mcfqspi, t->len / 2, t->tx_buf,  in mcfqspi_transfer_one()
328 	mcfqspi_wr_qir(mcfqspi, 0);  in mcfqspi_transfer_one()
350 	struct mcfqspi *mcfqspi;  in mcfqspi_probe()  local
366 	master = spi_alloc_master(&pdev->dev, sizeof(*mcfqspi));  in mcfqspi_probe()
372 	mcfqspi = spi_master_get_devdata(master);  in mcfqspi_probe()
375 	mcfqspi->iobase = devm_ioremap_resource(&pdev->dev, res);  in mcfqspi_probe()
376 	if (IS_ERR(mcfqspi->iobase)) {  in mcfqspi_probe()
377 		status = PTR_ERR(mcfqspi->iobase);  in mcfqspi_probe()
381 	mcfqspi->irq = platform_get_irq(pdev, 0);  in mcfqspi_probe()
382 	if (mcfqspi->irq < 0) {  in mcfqspi_probe()
388 	status = devm_request_irq(&pdev->dev, mcfqspi->irq, mcfqspi_irq_handler,  in mcfqspi_probe()
389 				0, pdev->name, mcfqspi);  in mcfqspi_probe()
395 	mcfqspi->clk = devm_clk_get(&pdev->dev, "qspi_clk");  in mcfqspi_probe()
396 	if (IS_ERR(mcfqspi->clk)) {  in mcfqspi_probe()
398 		status = PTR_ERR(mcfqspi->clk);  in mcfqspi_probe()
401 	clk_enable(mcfqspi->clk);  in mcfqspi_probe()
406 	mcfqspi->cs_control = pdata->cs_control;  in mcfqspi_probe()
407 	status = mcfqspi_cs_setup(mcfqspi);  in mcfqspi_probe()
413 	init_waitqueue_head(&mcfqspi->waitq);  in mcfqspi_probe()
437 	mcfqspi_cs_teardown(mcfqspi);  in mcfqspi_probe()
439 	clk_disable(mcfqspi->clk);  in mcfqspi_probe()
451 	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);  in mcfqspi_remove()  local
455 	mcfqspi_wr_qmr(mcfqspi, MCFQSPI_QMR_MSTR);  in mcfqspi_remove()
457 	mcfqspi_cs_teardown(mcfqspi);  in mcfqspi_remove()
458 	clk_disable(mcfqspi->clk);  in mcfqspi_remove()
467 	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);  in mcfqspi_suspend()  local
474 	clk_disable(mcfqspi->clk);  in mcfqspi_suspend()
482 	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);  in mcfqspi_resume()  local
484 	clk_enable(mcfqspi->clk);  in mcfqspi_resume()
494 	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);  in mcfqspi_runtime_suspend()  local
496 	clk_disable(mcfqspi->clk);  in mcfqspi_runtime_suspend()
504 	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);  in mcfqspi_runtime_resume()  local
506 	clk_enable(mcfqspi->clk);  in mcfqspi_runtime_resume()