1 // SPDX-License-Identifier: GPL-2.0-or-later
17 #include "sdhci-pltfm.h"
43 	spin_lock(&sdc->lock);  in aspeed_sdc_configure_8bit_mode()
44 	info = readl(sdc->regs + ASPEED_SDC_INFO);  in aspeed_sdc_configure_8bit_mode()
46 		info |= sdhci->width_mask;  in aspeed_sdc_configure_8bit_mode()
48 		info &= ~sdhci->width_mask;  in aspeed_sdc_configure_8bit_mode()
49 	writel(info, sdc->regs + ASPEED_SDC_INFO);  in aspeed_sdc_configure_8bit_mode()
50 	spin_unlock(&sdc->lock);  in aspeed_sdc_configure_8bit_mode()
61 	parent = clk_get_rate(pltfm_host->clk);  in aspeed_sdhci_set_clock()
68 	if (WARN_ON(clock > host->max_clk))  in aspeed_sdhci_set_clock()
69 		clock = host->max_clk;  in aspeed_sdhci_set_clock()
84 	if (host->mmc->f_max)  in aspeed_sdhci_get_max_clock()
85 		return host->mmc->f_max;  in aspeed_sdhci_get_max_clock()
99 	aspeed_sdc = aspeed_sdhci->parent;  in aspeed_sdhci_set_bus_width()
101 	/* Set/clear 8-bit mode */  in aspeed_sdhci_set_bus_width()
116 	u32 val = readl(host->ioaddr + reg);  in aspeed_sdhci_readl()
119 	    (host->mmc->caps2 & MMC_CAP2_CD_ACTIVE_HIGH))  in aspeed_sdhci_readl()
146 		return -EINVAL;  in aspeed_sdhci_calculate_slot()
148 	if (res->start < dev->parent->res->start)  in aspeed_sdhci_calculate_slot()
149 		return -EINVAL;  in aspeed_sdhci_calculate_slot()
151 	delta = res->start - dev->parent->res->start;  in aspeed_sdhci_calculate_slot()
152 	if (delta & (0x100 - 1))  in aspeed_sdhci_calculate_slot()
153 		return -EINVAL;  in aspeed_sdhci_calculate_slot()
155 	return (delta / 0x100) - 1;  in aspeed_sdhci_calculate_slot()
173 	dev->parent = dev_get_drvdata(pdev->dev.parent);  in aspeed_sdhci_probe()
181 		return -EINVAL;  in aspeed_sdhci_probe()
183 	dev_info(&pdev->dev, "Configuring for slot %d\n", slot);  in aspeed_sdhci_probe()
184 	dev->width_mask = !slot ? ASPEED_SDC_S0MMC8 : ASPEED_SDC_S1MMC8;  in aspeed_sdhci_probe()
188 	pltfm_host->clk = devm_clk_get(&pdev->dev, NULL);  in aspeed_sdhci_probe()
189 	if (IS_ERR(pltfm_host->clk))  in aspeed_sdhci_probe()
190 		return PTR_ERR(pltfm_host->clk);  in aspeed_sdhci_probe()
192 	ret = clk_prepare_enable(pltfm_host->clk);  in aspeed_sdhci_probe()
194 		dev_err(&pdev->dev, "Unable to enable SDIO clock\n");  in aspeed_sdhci_probe()
198 	ret = mmc_of_parse(host->mmc);  in aspeed_sdhci_probe()
209 	clk_disable_unprepare(pltfm_host->clk);  in aspeed_sdhci_probe()
226 	clk_disable_unprepare(pltfm_host->clk);  in aspeed_sdhci_remove()
234 	{ .compatible = "aspeed,ast2400-sdhci", },
235 	{ .compatible = "aspeed,ast2500-sdhci", },
236 	{ .compatible = "aspeed,ast2600-sdhci", },
242 		.name	= "sdhci-aspeed",
257 	sdc = devm_kzalloc(&pdev->dev, sizeof(*sdc), GFP_KERNEL);  in aspeed_sdc_probe()
259 		return -ENOMEM;  in aspeed_sdc_probe()
261 	spin_lock_init(&sdc->lock);  in aspeed_sdc_probe()
263 	sdc->clk = devm_clk_get(&pdev->dev, NULL);  in aspeed_sdc_probe()
264 	if (IS_ERR(sdc->clk))  in aspeed_sdc_probe()
265 		return PTR_ERR(sdc->clk);  in aspeed_sdc_probe()
267 	ret = clk_prepare_enable(sdc->clk);  in aspeed_sdc_probe()
269 		dev_err(&pdev->dev, "Unable to enable SDCLK\n");  in aspeed_sdc_probe()
273 	sdc->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);  in aspeed_sdc_probe()
274 	sdc->regs = devm_ioremap_resource(&pdev->dev, sdc->res);  in aspeed_sdc_probe()
275 	if (IS_ERR(sdc->regs)) {  in aspeed_sdc_probe()
276 		ret = PTR_ERR(sdc->regs);  in aspeed_sdc_probe()
280 	dev_set_drvdata(&pdev->dev, sdc);  in aspeed_sdc_probe()
282 	parent = pdev->dev.of_node;  in aspeed_sdc_probe()
286 		cpdev = of_platform_device_create(child, NULL, &pdev->dev);  in aspeed_sdc_probe()
289 			ret = -ENODEV;  in aspeed_sdc_probe()
297 	clk_disable_unprepare(sdc->clk);  in aspeed_sdc_probe()
303 	struct aspeed_sdc *sdc = dev_get_drvdata(&pdev->dev);  in aspeed_sdc_remove()
305 	clk_disable_unprepare(sdc->clk);  in aspeed_sdc_remove()
311 	{ .compatible = "aspeed,ast2400-sd-controller", },
312 	{ .compatible = "aspeed,ast2500-sd-controller", },
313 	{ .compatible = "aspeed,ast2600-sd-controller", },
321 		.name	= "sd-controller-aspeed",
353 MODULE_DESCRIPTION("Driver for the ASPEED SD/SDIO/SDHCI Controllers");