125 static void f_ospi_clear_irq(struct f_ospi *ospi)  in f_ospi_clear_irq()  argument
128 	       ospi->base + OSPI_IRQ);  in f_ospi_clear_irq()
131 static void f_ospi_enable_irq_status(struct f_ospi *ospi, u32 irq_bits)  in f_ospi_enable_irq_status()  argument
135 	val = readl(ospi->base + OSPI_IRQ_STAT_EN);  in f_ospi_enable_irq_status()
137 	writel(val, ospi->base + OSPI_IRQ_STAT_EN);  in f_ospi_enable_irq_status()
140 static void f_ospi_disable_irq_status(struct f_ospi *ospi, u32 irq_bits)  in f_ospi_disable_irq_status()  argument
144 	val = readl(ospi->base + OSPI_IRQ_STAT_EN);  in f_ospi_disable_irq_status()
146 	writel(val, ospi->base + OSPI_IRQ_STAT_EN);  in f_ospi_disable_irq_status()
149 static void f_ospi_disable_irq_output(struct f_ospi *ospi, u32 irq_bits)  in f_ospi_disable_irq_output()  argument
153 	val = readl(ospi->base + OSPI_IRQ_SIG_EN);  in f_ospi_disable_irq_output()
155 	writel(val, ospi->base + OSPI_IRQ_SIG_EN);  in f_ospi_disable_irq_output()
158 static int f_ospi_prepare_config(struct f_ospi *ospi)  in f_ospi_prepare_config()  argument
163 	val = readl(ospi->base + OSPI_CLK_CTL);  in f_ospi_prepare_config()
165 	writel(val, ospi->base + OSPI_CLK_CTL);  in f_ospi_prepare_config()
171 	return readl_poll_timeout(ospi->base + OSPI_STAT,  in f_ospi_prepare_config()
176 static int f_ospi_unprepare_config(struct f_ospi *ospi)  in f_ospi_unprepare_config()  argument
181 	val = readl(ospi->base + OSPI_CLK_CTL);  in f_ospi_unprepare_config()
183 	writel(val, ospi->base + OSPI_CLK_CTL);  in f_ospi_unprepare_config()
186 	return readl_poll_timeout(ospi->base + OSPI_STAT,  in f_ospi_unprepare_config()
191 static void f_ospi_config_clk(struct f_ospi *ospi, u32 device_hz)  in f_ospi_config_clk()  argument
193 	long rate_hz = clk_get_rate(ospi->clk);  in f_ospi_config_clk()
199 		dev_warn(ospi->dev, "Device frequency too large: %d\n",  in f_ospi_config_clk()
212 			dev_warn(ospi->dev, "Device frequency too small: %d\n",  in f_ospi_config_clk()
223 	val = readl(ospi->base + OSPI_CLK_CTL);  in f_ospi_config_clk()
229 	writel(val, ospi->base + OSPI_CLK_CTL);  in f_ospi_config_clk()
232 static void f_ospi_config_dll(struct f_ospi *ospi)  in f_ospi_config_dll()  argument
237 static u8 f_ospi_get_mode(struct f_ospi *ospi, int width, int data_size)  in f_ospi_get_mode()  argument
256 			dev_err(ospi->dev, "Invalid buswidth: %d\n", width);  in f_ospi_get_mode()
263 static void f_ospi_config_indir_protocol(struct f_ospi *ospi,  in f_ospi_config_indir_protocol()  argument
273 	writel(BIT(spi_get_chipselect(spi, 0)), ospi->base + OSPI_SSEL);  in f_ospi_config_indir_protocol()
275 	mode = f_ospi_get_mode(ospi, op->cmd.buswidth, 1);  in f_ospi_config_indir_protocol()
278 	mode = f_ospi_get_mode(ospi, op->addr.buswidth, op->addr.nbytes);  in f_ospi_config_indir_protocol()
281 	mode = f_ospi_get_mode(ospi, op->data.buswidth, op->data.nbytes);  in f_ospi_config_indir_protocol()
327 		dev_warn(ospi->dev, "Unsupported direction");  in f_ospi_config_indir_protocol()
334 	writel(prot, ospi->base + OSPI_PROT_CTL_INDIR);  in f_ospi_config_indir_protocol()
335 	writel(val, ospi->base + OSPI_DAT_SIZE_INDIR);  in f_ospi_config_indir_protocol()
338 static int f_ospi_indir_prepare_op(struct f_ospi *ospi, struct spi_mem *mem,  in f_ospi_indir_prepare_op()  argument
344 	ret = f_ospi_prepare_config(ospi);  in f_ospi_indir_prepare_op()
348 	f_ospi_config_clk(ospi, op->max_freq);  in f_ospi_indir_prepare_op()
350 	f_ospi_config_indir_protocol(ospi, mem, op);  in f_ospi_indir_prepare_op()
352 	writel(f_ospi_get_dummy_cycle(op), ospi->base + OSPI_DMY_INDIR);  in f_ospi_indir_prepare_op()
353 	writel(op->addr.val, ospi->base + OSPI_ADDR);  in f_ospi_indir_prepare_op()
354 	writel(op->cmd.opcode, ospi->base + OSPI_CMD_IDX_INDIR);  in f_ospi_indir_prepare_op()
356 	f_ospi_clear_irq(ospi);  in f_ospi_indir_prepare_op()
372 		dev_warn(ospi->dev, "Unsupported direction");  in f_ospi_indir_prepare_op()
376 	f_ospi_disable_irq_status(ospi, ~irq_stat_en);  in f_ospi_indir_prepare_op()
377 	f_ospi_enable_irq_status(ospi, irq_stat_en);  in f_ospi_indir_prepare_op()
379 	return f_ospi_unprepare_config(ospi);  in f_ospi_indir_prepare_op()
382 static void f_ospi_indir_start_xfer(struct f_ospi *ospi)  in f_ospi_indir_start_xfer()  argument
385 	writel(OSPI_TRANS_CTL_START_REQ, ospi->base + OSPI_TRANS_CTL);  in f_ospi_indir_start_xfer()
388 static void f_ospi_indir_stop_xfer(struct f_ospi *ospi)  in f_ospi_indir_stop_xfer()  argument
391 	writel(OSPI_TRANS_CTL_STOP_REQ, ospi->base + OSPI_TRANS_CTL);  in f_ospi_indir_stop_xfer()
394 static int f_ospi_indir_wait_xfer_complete(struct f_ospi *ospi)  in f_ospi_indir_wait_xfer_complete()  argument
398 	return readl_poll_timeout(ospi->base + OSPI_IRQ, val,  in f_ospi_indir_wait_xfer_complete()
403 static int f_ospi_indir_read(struct f_ospi *ospi, struct spi_mem *mem,  in f_ospi_indir_read()  argument
410 	mutex_lock(&ospi->mlock);  in f_ospi_indir_read()
413 	ret = f_ospi_indir_prepare_op(ospi, mem, op);  in f_ospi_indir_read()
417 	f_ospi_indir_start_xfer(ospi);  in f_ospi_indir_read()
421 		ret = readl_poll_timeout(ospi->base + OSPI_IRQ, val,  in f_ospi_indir_read()
427 		buf[i] = readl(ospi->base + OSPI_DAT) & 0xFF;  in f_ospi_indir_read()
431 	if (!(readl(ospi->base + OSPI_DAT_SIZE_INDIR) & OSPI_DAT_SIZE_EN))  in f_ospi_indir_read()
432 		f_ospi_indir_stop_xfer(ospi);  in f_ospi_indir_read()
435 	ret = f_ospi_indir_wait_xfer_complete(ospi);  in f_ospi_indir_read()
439 	writel(OSPI_IRQ_CS_TRANS_COMP, ospi->base + OSPI_IRQ);  in f_ospi_indir_read()
442 	if (readl(ospi->base + OSPI_DAT_SIZE_INDIR) & OSPI_DAT_SIZE_EN)  in f_ospi_indir_read()
446 	writel(OSPI_SWRST_INDIR_READ_FIFO, ospi->base + OSPI_SWRST);  in f_ospi_indir_read()
448 	ret = readl_poll_timeout(ospi->base + OSPI_SWRST, val,  in f_ospi_indir_read()
452 	mutex_unlock(&ospi->mlock);  in f_ospi_indir_read()
457 static int f_ospi_indir_write(struct f_ospi *ospi, struct spi_mem *mem,  in f_ospi_indir_write()  argument
464 	mutex_lock(&ospi->mlock);  in f_ospi_indir_write()
467 	ret = f_ospi_indir_prepare_op(ospi, mem, op);  in f_ospi_indir_write()
471 	f_ospi_indir_start_xfer(ospi);  in f_ospi_indir_write()
473 	if (!(readl(ospi->base + OSPI_PROT_CTL_INDIR) & OSPI_PROT_DATA_EN))  in f_ospi_indir_write()
478 		ret = readl_poll_timeout(ospi->base + OSPI_IRQ, val,  in f_ospi_indir_write()
484 		writel(buf[i], ospi->base + OSPI_DAT);  in f_ospi_indir_write()
488 	if (!(readl(ospi->base + OSPI_DAT_SIZE_INDIR) & OSPI_DAT_SIZE_EN))  in f_ospi_indir_write()
489 		f_ospi_indir_stop_xfer(ospi);  in f_ospi_indir_write()
493 	ret = f_ospi_indir_wait_xfer_complete(ospi);  in f_ospi_indir_write()
497 	writel(OSPI_IRQ_CS_TRANS_COMP, ospi->base + OSPI_IRQ);  in f_ospi_indir_write()
499 	mutex_unlock(&ospi->mlock);  in f_ospi_indir_write()
506 	struct f_ospi *ospi = spi_controller_get_devdata(mem->spi->controller);  in f_ospi_exec_op()  local
511 		err = f_ospi_indir_read(ospi, mem, op);  in f_ospi_exec_op()
517 		err = f_ospi_indir_write(ospi, mem, op);  in f_ospi_exec_op()
521 		dev_warn(ospi->dev, "Unsupported direction");  in f_ospi_exec_op()
586 static int f_ospi_init(struct f_ospi *ospi)  in f_ospi_init()  argument
590 	ret = f_ospi_prepare_config(ospi);  in f_ospi_init()
595 	writel(OSPI_ACC_MODE_BOOT_DISABLE, ospi->base + OSPI_ACC_MODE);  in f_ospi_init()
597 	f_ospi_config_dll(ospi);  in f_ospi_init()
600 	f_ospi_clear_irq(ospi);  in f_ospi_init()
601 	f_ospi_disable_irq_status(ospi, OSPI_IRQ_ALL);  in f_ospi_init()
602 	f_ospi_disable_irq_output(ospi, OSPI_IRQ_ALL);  in f_ospi_init()
604 	return f_ospi_unprepare_config(ospi);  in f_ospi_init()
611 	struct f_ospi *ospi;  in f_ospi_probe()  local
615 	ctlr = spi_alloc_host(dev, sizeof(*ospi));  in f_ospi_probe()
633 	ospi = spi_controller_get_devdata(ctlr);  in f_ospi_probe()
634 	ospi->dev = dev;  in f_ospi_probe()
636 	platform_set_drvdata(pdev, ospi);  in f_ospi_probe()
638 	ospi->base = devm_platform_ioremap_resource(pdev, 0);  in f_ospi_probe()
639 	if (IS_ERR(ospi->base)) {  in f_ospi_probe()
640 		ret = PTR_ERR(ospi->base);  in f_ospi_probe()
644 	ospi->clk = devm_clk_get_enabled(dev, NULL);  in f_ospi_probe()
645 	if (IS_ERR(ospi->clk)) {  in f_ospi_probe()
646 		ret = PTR_ERR(ospi->clk);  in f_ospi_probe()
650 	mutex_init(&ospi->mlock);  in f_ospi_probe()
652 	ret = f_ospi_init(ospi);  in f_ospi_probe()
663 	mutex_destroy(&ospi->mlock);  in f_ospi_probe()
673 	struct f_ospi *ospi = platform_get_drvdata(pdev);  in f_ospi_remove()  local
675 	mutex_destroy(&ospi->mlock);  in f_ospi_remove()
679 	{ .compatible = "socionext,f-ospi" },
686 		.name = "socionext,f-ospi",