1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2015 Linaro
3*4882a593Smuzhiyun * peter.griffin <peter.griffin@linaro.org>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <dwmmc.h>
10*4882a593Smuzhiyun #include <malloc.h>
11*4882a593Smuzhiyun #include <linux/errno.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #define DWMMC_MAX_CH_NUM 4
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #define DWMMC_MAX_FREQ 50000000
16*4882a593Smuzhiyun #define DWMMC_MIN_FREQ 400000
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun /* Source clock is configured to 100MHz by ATF bl1*/
19*4882a593Smuzhiyun #define MMC0_DEFAULT_FREQ 100000000
20*4882a593Smuzhiyun
hi6220_dwmci_core_init(struct dwmci_host * host,int index)21*4882a593Smuzhiyun static int hi6220_dwmci_core_init(struct dwmci_host *host, int index)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun host->name = "Hisilicon DWMMC";
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun host->dev_index = index;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun /* Add the mmc channel to be registered with mmc core */
28*4882a593Smuzhiyun if (add_dwmci(host, DWMMC_MAX_FREQ, DWMMC_MIN_FREQ)) {
29*4882a593Smuzhiyun printf("DWMMC%d registration failed\n", index);
30*4882a593Smuzhiyun return -1;
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun return 0;
33*4882a593Smuzhiyun }
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun /*
36*4882a593Smuzhiyun * This function adds the mmc channel to be registered with mmc core.
37*4882a593Smuzhiyun * index - mmc channel number.
38*4882a593Smuzhiyun * regbase - register base address of mmc channel specified in 'index'.
39*4882a593Smuzhiyun * bus_width - operating bus width of mmc channel specified in 'index'.
40*4882a593Smuzhiyun */
hi6220_dwmci_add_port(int index,u32 regbase,int bus_width)41*4882a593Smuzhiyun int hi6220_dwmci_add_port(int index, u32 regbase, int bus_width)
42*4882a593Smuzhiyun {
43*4882a593Smuzhiyun struct dwmci_host *host = NULL;
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun host = calloc(1, sizeof(struct dwmci_host));
46*4882a593Smuzhiyun if (!host) {
47*4882a593Smuzhiyun pr_err("dwmci_host calloc failed!\n");
48*4882a593Smuzhiyun return -ENOMEM;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun host->ioaddr = (void *)(ulong)regbase;
52*4882a593Smuzhiyun host->buswidth = bus_width;
53*4882a593Smuzhiyun host->bus_hz = MMC0_DEFAULT_FREQ;
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun return hi6220_dwmci_core_init(host, index);
56*4882a593Smuzhiyun }
57