sdhci-pltfm.c (cf40a76e7d5874bb25f4404eecc58a2e033af885) sdhci-pltfm.c (8199d312dad790327cb290e5a856fdbfbc861a96)
1/*
2 * sdhci-pltfm.c Support for SDHCI platform devices
3 * Copyright (c) 2009 Intel Corporation
4 *
5 * Copyright (c) 2007, 2011 Freescale Semiconductor, Inc.
6 * Copyright (c) 2009 MontaVista Software, Inc.
7 *
8 * Authors: Xiaobo Xie <X.Xie@freescale.com>

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25/* Supports:
26 * SDHCI platform devices
27 *
28 * Inspired by sdhci-pci.c, by Pierre Ossman
29 */
30
31#include <linux/err.h>
32#include <linux/module.h>
1/*
2 * sdhci-pltfm.c Support for SDHCI platform devices
3 * Copyright (c) 2009 Intel Corporation
4 *
5 * Copyright (c) 2007, 2011 Freescale Semiconductor, Inc.
6 * Copyright (c) 2009 MontaVista Software, Inc.
7 *
8 * Authors: Xiaobo Xie <X.Xie@freescale.com>

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25/* Supports:
26 * SDHCI platform devices
27 *
28 * Inspired by sdhci-pci.c, by Pierre Ossman
29 */
30
31#include <linux/err.h>
32#include <linux/module.h>
33#include <linux/property.h>
33#include <linux/of.h>
34#ifdef CONFIG_PPC
35#include <asm/machdep.h>
36#endif
37#include "sdhci-pltfm.h"
38
39unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host)
40{

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46
47static const struct sdhci_ops sdhci_pltfm_ops = {
48 .set_clock = sdhci_set_clock,
49 .set_bus_width = sdhci_set_bus_width,
50 .reset = sdhci_reset,
51 .set_uhs_signaling = sdhci_set_uhs_signaling,
52};
53
34#include <linux/of.h>
35#ifdef CONFIG_PPC
36#include <asm/machdep.h>
37#endif
38#include "sdhci-pltfm.h"
39
40unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host)
41{

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47
48static const struct sdhci_ops sdhci_pltfm_ops = {
49 .set_clock = sdhci_set_clock,
50 .set_bus_width = sdhci_set_bus_width,
51 .reset = sdhci_reset,
52 .set_uhs_signaling = sdhci_set_uhs_signaling,
53};
54
54#ifdef CONFIG_OF
55static bool sdhci_of_wp_inverted(struct device_node *np)
55static bool sdhci_wp_inverted(struct device *dev)
56{
56{
57 if (of_get_property(np, "sdhci,wp-inverted", NULL) ||
58 of_get_property(np, "wp-inverted", NULL))
57 if (device_property_present(dev, "sdhci,wp-inverted") ||
58 device_property_present(dev, "wp-inverted"))
59 return true;
60
61 /* Old device trees don't have the wp-inverted property. */
62#ifdef CONFIG_PPC
63 return machine_is(mpc837x_rdb) || machine_is(mpc837x_mds);
64#else
65 return false;
66#endif /* CONFIG_PPC */
67}
68
59 return true;
60
61 /* Old device trees don't have the wp-inverted property. */
62#ifdef CONFIG_PPC
63 return machine_is(mpc837x_rdb) || machine_is(mpc837x_mds);
64#else
65 return false;
66#endif /* CONFIG_PPC */
67}
68
69void sdhci_get_of_property(struct platform_device *pdev)
69#ifdef CONFIG_OF
70static void sdhci_get_compatibility(struct platform_device *pdev)
70{
71{
72 struct sdhci_host *host = platform_get_drvdata(pdev);
71 struct device_node *np = pdev->dev.of_node;
73 struct device_node *np = pdev->dev.of_node;
74
75 if (!np)
76 return;
77
78 if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc"))
79 host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
80
81 if (of_device_is_compatible(np, "fsl,p2020-esdhc") ||
82 of_device_is_compatible(np, "fsl,p1010-esdhc") ||
83 of_device_is_compatible(np, "fsl,t4240-esdhc") ||
84 of_device_is_compatible(np, "fsl,mpc8536-esdhc"))
85 host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
86}
87#else
88void sdhci_get_compatibility(struct platform_device *pdev) {}
89#endif /* CONFIG_OF */
90
91void sdhci_get_property(struct platform_device *pdev)
92{
93 struct device *dev = &pdev->dev;
72 struct sdhci_host *host = platform_get_drvdata(pdev);
73 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
74 u32 bus_width;
75
94 struct sdhci_host *host = platform_get_drvdata(pdev);
95 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
96 u32 bus_width;
97
76 if (of_get_property(np, "sdhci,auto-cmd12", NULL))
98 if (device_property_present(dev, "sdhci,auto-cmd12"))
77 host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12;
78
99 host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12;
100
79 if (of_get_property(np, "sdhci,1-bit-only", NULL) ||
80 (of_property_read_u32(np, "bus-width", &bus_width) == 0 &&
101 if (device_property_present(dev, "sdhci,1-bit-only") ||
102 (device_property_read_u32(dev, "bus-width", &bus_width) == 0 &&
81 bus_width == 1))
82 host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;
83
103 bus_width == 1))
104 host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;
105
84 if (sdhci_of_wp_inverted(np))
106 if (sdhci_wp_inverted(dev))
85 host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT;
86
107 host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT;
108
87 if (of_get_property(np, "broken-cd", NULL))
109 if (device_property_present(dev, "broken-cd"))
88 host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
89
110 host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
111
90 if (of_get_property(np, "no-1-8-v", NULL))
112 if (device_property_present(dev, "no-1-8-v"))
91 host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
92
113 host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
114
93 if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc"))
94 host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
115 sdhci_get_compatibility(pdev);
95
116
96 if (of_device_is_compatible(np, "fsl,p2020-esdhc") ||
97 of_device_is_compatible(np, "fsl,p1010-esdhc") ||
98 of_device_is_compatible(np, "fsl,t4240-esdhc") ||
99 of_device_is_compatible(np, "fsl,mpc8536-esdhc"))
100 host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
117 device_property_read_u32(dev, "clock-frequency", &pltfm_host->clock);
101
118
102 of_property_read_u32(np, "clock-frequency", &pltfm_host->clock);
103
104 if (of_find_property(np, "keep-power-in-suspend", NULL))
119 if (device_property_present(dev, "keep-power-in-suspend"))
105 host->mmc->pm_caps |= MMC_PM_KEEP_POWER;
106
120 host->mmc->pm_caps |= MMC_PM_KEEP_POWER;
121
107 if (of_property_read_bool(np, "wakeup-source") ||
108 of_property_read_bool(np, "enable-sdio-wakeup")) /* legacy */
122 if (device_property_read_bool(dev, "wakeup-source") ||
123 device_property_read_bool(dev, "enable-sdio-wakeup")) /* legacy */
109 host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
110}
124 host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
125}
111#else
112void sdhci_get_of_property(struct platform_device *pdev) {}
113#endif /* CONFIG_OF */
114EXPORT_SYMBOL_GPL(sdhci_get_of_property);
126EXPORT_SYMBOL_GPL(sdhci_get_property);
115
116struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
117 const struct sdhci_pltfm_data *pdata,
118 size_t priv_size)
119{
120 struct sdhci_host *host;
121 struct resource *iomem;
122 void __iomem *ioaddr;

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179{
180 struct sdhci_host *host;
181 int ret = 0;
182
183 host = sdhci_pltfm_init(pdev, pdata, priv_size);
184 if (IS_ERR(host))
185 return PTR_ERR(host);
186
127
128struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
129 const struct sdhci_pltfm_data *pdata,
130 size_t priv_size)
131{
132 struct sdhci_host *host;
133 struct resource *iomem;
134 void __iomem *ioaddr;

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191{
192 struct sdhci_host *host;
193 int ret = 0;
194
195 host = sdhci_pltfm_init(pdev, pdata, priv_size);
196 if (IS_ERR(host))
197 return PTR_ERR(host);
198
187 sdhci_get_of_property(pdev);
199 sdhci_get_property(pdev);
188
189 ret = sdhci_add_host(host);
190 if (ret)
191 sdhci_pltfm_free(pdev);
192
193 return ret;
194}
195EXPORT_SYMBOL_GPL(sdhci_pltfm_register);

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201 ret = sdhci_add_host(host);
202 if (ret)
203 sdhci_pltfm_free(pdev);
204
205 return ret;
206}
207EXPORT_SYMBOL_GPL(sdhci_pltfm_register);

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