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
26 #include "sdhci-pltfm.h"
32 	return clk_get_rate(pltfm_host->clk);  in sdhci_pltfm_clk_get_max_clock()
45 	if (device_property_present(dev, "sdhci,wp-inverted") ||  in sdhci_wp_inverted()
46 	    device_property_present(dev, "wp-inverted"))  in sdhci_wp_inverted()
49 	/* Old device trees don't have the wp-inverted property. */  in sdhci_wp_inverted()
60 	struct device_node *np = pdev->dev.of_node;  in sdhci_get_compatibility()
65 	if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc"))  in sdhci_get_compatibility()
66 		host->quirks |= SDHCI_QUIRK_BROKEN_DMA;  in sdhci_get_compatibility()
68 	if (of_device_is_compatible(np, "fsl,p2020-esdhc") ||  in sdhci_get_compatibility()
69 	    of_device_is_compatible(np, "fsl,p1010-esdhc") ||  in sdhci_get_compatibility()
70 	    of_device_is_compatible(np, "fsl,t4240-esdhc") ||  in sdhci_get_compatibility()
71 	    of_device_is_compatible(np, "fsl,mpc8536-esdhc"))  in sdhci_get_compatibility()
72 		host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;  in sdhci_get_compatibility()
77 	struct device *dev = &pdev->dev;  in sdhci_get_property()
82 	if (device_property_present(dev, "sdhci,auto-cmd12"))  in sdhci_get_property()
83 		host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12;  in sdhci_get_property()
85 	if (device_property_present(dev, "sdhci,1-bit-only") ||  in sdhci_get_property()
86 	    (device_property_read_u32(dev, "bus-width", &bus_width) == 0 &&  in sdhci_get_property()
88 		host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;  in sdhci_get_property()
91 		host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT;  in sdhci_get_property()
93 	if (device_property_present(dev, "broken-cd"))  in sdhci_get_property()
94 		host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;  in sdhci_get_property()
96 	if (device_property_present(dev, "no-1-8-v"))  in sdhci_get_property()
97 		host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;  in sdhci_get_property()
101 	device_property_read_u32(dev, "clock-frequency", &pltfm_host->clock);  in sdhci_get_property()
103 	if (device_property_present(dev, "keep-power-in-suspend"))  in sdhci_get_property()
104 		host->mmc->pm_caps |= MMC_PM_KEEP_POWER;  in sdhci_get_property()
106 	if (device_property_read_bool(dev, "wakeup-source") ||  in sdhci_get_property()
107 	    device_property_read_bool(dev, "enable-sdio-wakeup")) /* legacy */  in sdhci_get_property()
108 		host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;  in sdhci_get_property()
132 	host = sdhci_alloc_host(&pdev->dev,  in sdhci_pltfm_init()
140 	host->ioaddr = ioaddr;  in sdhci_pltfm_init()
141 	host->irq = irq;  in sdhci_pltfm_init()
142 	host->hw_name = dev_name(&pdev->dev);  in sdhci_pltfm_init()
143 	if (pdata && pdata->ops)  in sdhci_pltfm_init()
144 		host->ops = pdata->ops;  in sdhci_pltfm_init()
146 		host->ops = &sdhci_pltfm_ops;  in sdhci_pltfm_init()
148 		host->quirks = pdata->quirks;  in sdhci_pltfm_init()
149 		host->quirks2 = pdata->quirks2;  in sdhci_pltfm_init()
156 	dev_err(&pdev->dev, "%s failed %d\n", __func__, ret);  in sdhci_pltfm_init()
193 	int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);  in sdhci_pltfm_remove()
207 	if (host->tuning_mode != SDHCI_TUNING_MODE_3)  in sdhci_pltfm_suspend()
208 		mmc_retune_needed(host->mmc);  in sdhci_pltfm_suspend()
214 	clk_disable_unprepare(pltfm_host->clk);  in sdhci_pltfm_suspend()
226 	ret = clk_prepare_enable(pltfm_host->clk);  in sdhci_pltfm_resume()
232 		clk_disable_unprepare(pltfm_host->clk);  in sdhci_pltfm_resume()
246 	pr_info("sdhci-pltfm: SDHCI platform and OF driver helper\n");  in sdhci_pltfm_drv_init()