1/* 2 * Copyright(c) 2009 Ian Molton <spyro@f2s.com> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9#include <linux/export.h> 10#include <linux/mfd/tmio.h> 11 12int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base) 13{ 14 /* Enable the MMC/SD Control registers */ 15 sd_config_write16(cnf, shift, CNF_CMD, SDCREN); 16 sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe); 17 18 /* Disable SD power during suspend */ 19 sd_config_write8(cnf, shift, CNF_PWR_CTL_3, 0x01); 20 21 /* The below is required but why? FIXME */ 22 sd_config_write8(cnf, shift, CNF_STOP_CLK_CTL, 0x1f); 23 24 /* Power down SD bus */ 25 sd_config_write8(cnf, shift, CNF_PWR_CTL_2, 0x00); 26 27 return 0; 28} 29EXPORT_SYMBOL(tmio_core_mmc_enable); 30 31int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base) 32{ 33 34 /* Enable the MMC/SD Control registers */ 35 sd_config_write16(cnf, shift, CNF_CMD, SDCREN); 36 sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe); 37 38 return 0; 39} 40EXPORT_SYMBOL(tmio_core_mmc_resume); 41 42void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state) 43{ 44 sd_config_write8(cnf, shift, CNF_PWR_CTL_2, state ? 0x02 : 0x00); 45} 46EXPORT_SYMBOL(tmio_core_mmc_pwr); 47 48void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state) 49{ 50 sd_config_write8(cnf, shift, CNF_SD_CLK_MODE, state ? 1 : 0); 51} 52EXPORT_SYMBOL(tmio_core_mmc_clk_div); 53 54