1 // SPDX-License-Identifier: GPL-2.0-only
3  * sdhci-pltfm.c Support for SDHCI platform devices
16  * Inspired by sdhci-pci.c, by Pierre Ossman
25 #include "sdhci-pltfm.h"
31 	return clk_get_rate(pltfm_host->clk);  in sdhci_pltfm_clk_get_max_clock()
44 	if (device_property_present(dev, "sdhci,wp-inverted") ||  in sdhci_wp_inverted()
45 	    device_property_present(dev, "wp-inverted"))  in sdhci_wp_inverted()
48 	/* Old device trees don't have the wp-inverted property. */  in sdhci_wp_inverted()
58 	struct device *dev = &pdev->dev;  in sdhci_get_compatibility()
61 	if (device_is_compatible(dev, "fsl,p2020-rev1-esdhc"))  in sdhci_get_compatibility()
62 		host->quirks |= SDHCI_QUIRK_BROKEN_DMA;  in sdhci_get_compatibility()
64 	if (device_is_compatible(dev, "fsl,p2020-esdhc") ||  in sdhci_get_compatibility()
65 	    device_is_compatible(dev, "fsl,p1010-esdhc") ||  in sdhci_get_compatibility()
66 	    device_is_compatible(dev, "fsl,t4240-esdhc") ||  in sdhci_get_compatibility()
67 	    device_is_compatible(dev, "fsl,mpc8536-esdhc"))  in sdhci_get_compatibility()
68 		host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;  in sdhci_get_compatibility()
73 	struct device *dev = &pdev->dev;  in sdhci_get_property()
78 	if (device_property_present(dev, "sdhci,auto-cmd12"))  in sdhci_get_property()
79 		host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12;  in sdhci_get_property()
81 	if (device_property_present(dev, "sdhci,1-bit-only") ||  in sdhci_get_property()
82 	    (device_property_read_u32(dev, "bus-width", &bus_width) == 0 &&  in sdhci_get_property()
84 		host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;  in sdhci_get_property()
87 		host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT;  in sdhci_get_property()
89 	if (device_property_present(dev, "broken-cd"))  in sdhci_get_property()
90 		host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;  in sdhci_get_property()
92 	if (device_property_present(dev, "no-1-8-v"))  in sdhci_get_property()
93 		host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;  in sdhci_get_property()
97 	device_property_read_u32(dev, "clock-frequency", &pltfm_host->clock);  in sdhci_get_property()
99 	if (device_property_present(dev, "keep-power-in-suspend"))  in sdhci_get_property()
100 		host->mmc->pm_caps |= MMC_PM_KEEP_POWER;  in sdhci_get_property()
102 	if (device_property_read_bool(dev, "wakeup-source") ||  in sdhci_get_property()
103 	    device_property_read_bool(dev, "enable-sdio-wakeup")) /* legacy */  in sdhci_get_property()
104 		host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;  in sdhci_get_property()
124 	host = sdhci_alloc_host(&pdev->dev,  in sdhci_pltfm_init()
127 		dev_err(&pdev->dev, "%s failed %pe\n", __func__, host);  in sdhci_pltfm_init()
131 	host->ioaddr = ioaddr;  in sdhci_pltfm_init()
132 	host->irq = irq;  in sdhci_pltfm_init()
133 	host->hw_name = dev_name(&pdev->dev);  in sdhci_pltfm_init()
134 	if (pdata && pdata->ops)  in sdhci_pltfm_init()
135 		host->ops = pdata->ops;  in sdhci_pltfm_init()
137 		host->ops = &sdhci_pltfm_ops;  in sdhci_pltfm_init()
139 		host->quirks = pdata->quirks;  in sdhci_pltfm_init()
140 		host->quirks2 = pdata->quirks2;  in sdhci_pltfm_init()
181 	int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);  in sdhci_pltfm_remove()
195 	if (host->tuning_mode != SDHCI_TUNING_MODE_3)  in sdhci_pltfm_suspend()
196 		mmc_retune_needed(host->mmc);  in sdhci_pltfm_suspend()
202 	clk_disable_unprepare(pltfm_host->clk);  in sdhci_pltfm_suspend()
214 	ret = clk_prepare_enable(pltfm_host->clk);  in sdhci_pltfm_resume()
220 		clk_disable_unprepare(pltfm_host->clk);  in sdhci_pltfm_resume()
234 	pr_info("sdhci-pltfm: SDHCI platform and OF driver helper\n");  in sdhci_pltfm_drv_init()