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79c83065 KY |
1 | /* |
2 | * (C) Copyright 2016 Fuzhou Rockchip Electronics Co., Ltd | |
3 | * | |
4 | * Rockchip SD Host Controller Interface | |
5 | * | |
6 | * SPDX-License-Identifier: GPL-2.0+ | |
7 | */ | |
8 | ||
9 | #include <common.h> | |
10 | #include <dm.h> | |
11 | #include <fdtdec.h> | |
12 | #include <libfdt.h> | |
13 | #include <malloc.h> | |
14 | #include <sdhci.h> | |
15 | ||
16 | /* 400KHz is max freq for card ID etc. Use that as min */ | |
17 | #define EMMC_MIN_FREQ 400000 | |
18 | ||
19 | struct rockchip_sdhc_plat { | |
20 | struct mmc_config cfg; | |
21 | struct mmc mmc; | |
22 | }; | |
23 | ||
24 | struct rockchip_sdhc { | |
25 | struct sdhci_host host; | |
26 | void *base; | |
27 | }; | |
28 | ||
29 | static int arasan_sdhci_probe(struct udevice *dev) | |
30 | { | |
31 | struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); | |
32 | struct rockchip_sdhc_plat *plat = dev_get_platdata(dev); | |
33 | struct rockchip_sdhc *prv = dev_get_priv(dev); | |
34 | struct sdhci_host *host = &prv->host; | |
35 | int ret; | |
79c83065 | 36 | |
79c83065 KY |
37 | host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD; |
38 | ||
14bed52d JC |
39 | ret = sdhci_setup_cfg(&plat->cfg, host, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ, |
40 | EMMC_MIN_FREQ); | |
79c83065 KY |
41 | |
42 | host->mmc = &plat->mmc; | |
43 | if (ret) | |
44 | return ret; | |
45 | host->mmc->priv = &prv->host; | |
46 | host->mmc->dev = dev; | |
47 | upriv->mmc = host->mmc; | |
48 | ||
49 | return sdhci_probe(dev); | |
50 | } | |
51 | ||
52 | static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev) | |
53 | { | |
54 | struct sdhci_host *host = dev_get_priv(dev); | |
55 | ||
56 | host->name = dev->name; | |
57 | host->ioaddr = dev_get_addr_ptr(dev); | |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
62 | static int rockchip_sdhci_bind(struct udevice *dev) | |
63 | { | |
64 | struct rockchip_sdhc_plat *plat = dev_get_platdata(dev); | |
65 | int ret; | |
66 | ||
67 | ret = sdhci_bind(dev, &plat->mmc, &plat->cfg); | |
68 | if (ret) | |
69 | return ret; | |
70 | ||
71 | return 0; | |
72 | } | |
73 | ||
74 | static const struct udevice_id arasan_sdhci_ids[] = { | |
75 | { .compatible = "arasan,sdhci-5.1" }, | |
76 | { } | |
77 | }; | |
78 | ||
79 | U_BOOT_DRIVER(arasan_sdhci_drv) = { | |
80 | .name = "arasan_sdhci", | |
81 | .id = UCLASS_MMC, | |
82 | .of_match = arasan_sdhci_ids, | |
83 | .ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata, | |
84 | .ops = &sdhci_ops, | |
85 | .bind = rockchip_sdhci_bind, | |
86 | .probe = arasan_sdhci_probe, | |
87 | .priv_auto_alloc_size = sizeof(struct rockchip_sdhc), | |
88 | .platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat), | |
89 | }; |