1 /* 2 * (C) Copyright 2012 SAMSUNG Electronics 3 * Jaehoon Chung <jh80.chung@samsung.com> 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation; either version 2 of 8 * the License, or (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 * 19 */ 20 21 #include <common.h> 22 #include <malloc.h> 23 #include <dwmmc.h> 24 #include <asm/arch/dwmmc.h> 25 #include <asm/arch/clk.h> 26 27 static char *EXYNOS_NAME = "EXYNOS DWMMC"; 28 29 static void exynos_dwmci_clksel(struct dwmci_host *host) 30 { 31 u32 val; 32 val = DWMCI_SET_SAMPLE_CLK(DWMCI_SHIFT_0) | 33 DWMCI_SET_DRV_CLK(DWMCI_SHIFT_0) | DWMCI_SET_DIV_RATIO(0); 34 35 dwmci_writel(host, DWMCI_CLKSEL, val); 36 } 37 38 int exynos_dwmci_init(u32 regbase, int bus_width, int index) 39 { 40 struct dwmci_host *host = NULL; 41 host = malloc(sizeof(struct dwmci_host)); 42 if (!host) { 43 printf("dwmci_host malloc fail!\n"); 44 return 1; 45 } 46 47 host->name = EXYNOS_NAME; 48 host->ioaddr = (void *)regbase; 49 host->buswidth = bus_width; 50 host->clksel = exynos_dwmci_clksel; 51 host->dev_index = index; 52 53 add_dwmci(host, 52000000, 400000); 54 55 return 0; 56 } 57 58