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 <dwmmc.h>
9 #include <malloc.h>
10 #include <linux/errno.h>
11
12 #define DWMMC_MAX_CH_NUM 4
13
14 #define DWMMC_MAX_FREQ 50000000
15 #define DWMMC_MIN_FREQ 400000
16
17 /* Source clock is configured to 100MHz by ATF bl1*/
18 #define MMC0_DEFAULT_FREQ 100000000
19
hi6220_dwmci_core_init(struct dwmci_host * host,int index)20 static int hi6220_dwmci_core_init(struct dwmci_host *host, int index)
21 {
22 host->name = "Hisilicon DWMMC";
23
24 host->dev_index = index;
25
26 /* Add the mmc channel to be registered with mmc core */
27 if (add_dwmci(host, DWMMC_MAX_FREQ, DWMMC_MIN_FREQ)) {
28 printf("DWMMC%d registration failed\n", index);
29 return -1;
30 }
31 return 0;
32 }
33
34 /*
35 * This function adds the mmc channel to be registered with mmc core.
36 * index - mmc channel number.
37 * regbase - register base address of mmc channel specified in 'index'.
38 * bus_width - operating bus width of mmc channel specified in 'index'.
39 */
hi6220_dwmci_add_port(int index,u32 regbase,int bus_width)40 int hi6220_dwmci_add_port(int index, u32 regbase, int bus_width)
41 {
42 struct dwmci_host *host = NULL;
43
44 host = calloc(1, sizeof(struct dwmci_host));
45 if (!host) {
46 pr_err("dwmci_host calloc failed!\n");
47 return -ENOMEM;
48 }
49
50 host->ioaddr = (void *)(ulong)regbase;
51 host->buswidth = bus_width;
52 host->bus_hz = MMC0_DEFAULT_FREQ;
53
54 return hi6220_dwmci_core_init(host, index);
55 }
56