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kernel add
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/*
* Copyright(c) 2009 Ian Molton <spyro@f2s.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/export.h>
#include <linux/mfd/tmio.h>
int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base)
{
/* Enable the MMC/SD Control registers */
sd_config_write16(cnf, shift, CNF_CMD, SDCREN);
sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe);
/* Disable SD power during suspend */
sd_config_write8(cnf, shift, CNF_PWR_CTL_3, 0x01);
/* The below is required but why? FIXME */
sd_config_write8(cnf, shift, CNF_STOP_CLK_CTL, 0x1f);
/* Power down SD bus */
sd_config_write8(cnf, shift, CNF_PWR_CTL_2, 0x00);
return 0;
}
EXPORT_SYMBOL(tmio_core_mmc_enable);
int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base)
{
/* Enable the MMC/SD Control registers */
sd_config_write16(cnf, shift, CNF_CMD, SDCREN);
sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe);
return 0;
}
EXPORT_SYMBOL(tmio_core_mmc_resume);
void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state)
{
sd_config_write8(cnf, shift, CNF_PWR_CTL_2, state ? 0x02 : 0x00);
}
EXPORT_SYMBOL(tmio_core_mmc_pwr);
void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state)
{
sd_config_write8(cnf, shift, CNF_SD_CLK_MODE, state ? 1 : 0);
}
EXPORT_SYMBOL(tmio_core_mmc_clk_div);
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