1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2015 Linaro
4 * peter.griffin <peter.griffin@linaro.org>
5 */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <dwmmc.h>
10 #include <errno.h>
11 #include <fdtdec.h>
12 #include <malloc.h>
13 #include <asm/global_data.h>
14
15 DECLARE_GLOBAL_DATA_PTR;
16
17 struct hi6220_dwmmc_plat {
18 struct mmc_config cfg;
19 struct mmc mmc;
20 };
21
22 struct hi6220_dwmmc_priv_data {
23 struct dwmci_host host;
24 };
25
26 struct hisi_mmc_data {
27 unsigned int clock;
28 bool use_fifo;
29 };
30
hi6220_dwmmc_of_to_plat(struct udevice * dev)31 static int hi6220_dwmmc_of_to_plat(struct udevice *dev)
32 {
33 struct hi6220_dwmmc_priv_data *priv = dev_get_priv(dev);
34 struct dwmci_host *host = &priv->host;
35
36 host->name = dev->name;
37 host->ioaddr = dev_read_addr_ptr(dev);
38 host->buswidth = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
39 "bus-width", 4);
40
41 /* use non-removable property for differentiating SD card and eMMC */
42 if (dev_read_bool(dev, "non-removable"))
43 host->dev_index = 0;
44 else
45 host->dev_index = 1;
46
47 host->priv = priv;
48
49 return 0;
50 }
51
hi6220_dwmmc_probe(struct udevice * dev)52 static int hi6220_dwmmc_probe(struct udevice *dev)
53 {
54 struct hi6220_dwmmc_plat *plat = dev_get_plat(dev);
55 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
56 struct hi6220_dwmmc_priv_data *priv = dev_get_priv(dev);
57 struct dwmci_host *host = &priv->host;
58 struct hisi_mmc_data *mmc_data;
59
60 mmc_data = (struct hisi_mmc_data *)dev_get_driver_data(dev);
61
62 /* Use default bus speed due to absence of clk driver */
63 host->bus_hz = mmc_data->clock;
64
65 dwmci_setup_cfg(&plat->cfg, host, host->bus_hz, 400000);
66 host->mmc = &plat->mmc;
67
68 host->fifo_mode = mmc_data->use_fifo;
69 host->mmc->priv = &priv->host;
70 upriv->mmc = host->mmc;
71 host->mmc->dev = dev;
72
73 return dwmci_probe(dev);
74 }
75
hi6220_dwmmc_bind(struct udevice * dev)76 static int hi6220_dwmmc_bind(struct udevice *dev)
77 {
78 struct hi6220_dwmmc_plat *plat = dev_get_plat(dev);
79 int ret;
80
81 ret = dwmci_bind(dev, &plat->mmc, &plat->cfg);
82 if (ret)
83 return ret;
84
85 return 0;
86 }
87
88 static const struct hisi_mmc_data hi3660_mmc_data = {
89 .clock = 3200000,
90 .use_fifo = true,
91 };
92
93 static const struct hisi_mmc_data hi6220_mmc_data = {
94 .clock = 50000000,
95 .use_fifo = false,
96 };
97
98 static const struct udevice_id hi6220_dwmmc_ids[] = {
99 { .compatible = "hisilicon,hi6220-dw-mshc",
100 .data = (ulong)&hi6220_mmc_data },
101 { .compatible = "hisilicon,hi3798cv200-dw-mshc",
102 .data = (ulong)&hi6220_mmc_data },
103 { .compatible = "hisilicon,hi3660-dw-mshc",
104 .data = (ulong)&hi3660_mmc_data },
105 { }
106 };
107
108 U_BOOT_DRIVER(hi6220_dwmmc_drv) = {
109 .name = "hi6220_dwmmc",
110 .id = UCLASS_MMC,
111 .of_match = hi6220_dwmmc_ids,
112 .of_to_plat = hi6220_dwmmc_of_to_plat,
113 .ops = &dm_dwmci_ops,
114 .bind = hi6220_dwmmc_bind,
115 .probe = hi6220_dwmmc_probe,
116 .priv_auto = sizeof(struct hi6220_dwmmc_priv_data),
117 .plat_auto = sizeof(struct hi6220_dwmmc_plat),
118 };
119