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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright(c) 2009 Ian Molton <spyro@f2s.com>
*/
#include <linux/export.h>
#include <linux/mfd/tmio.h>
#define CNF_CMD 0x04
#define CNF_CTL_BASE 0x10
#define CNF_INT_PIN 0x3d
#define CNF_STOP_CLK_CTL 0x40
#define CNF_GCLK_CTL 0x41
#define CNF_SD_CLK_MODE 0x42
#define CNF_PIN_STATUS 0x44
#define CNF_PWR_CTL_1 0x48
#define CNF_PWR_CTL_2 0x49
#define CNF_PWR_CTL_3 0x4a
#define CNF_CARD_DETECT_MODE 0x4c
#define CNF_SD_SLOT 0x50
#define CNF_EXT_GCLK_CTL_1 0xf0
#define CNF_EXT_GCLK_CTL_2 0xf1
#define CNF_EXT_GCLK_CTL_3 0xf9
#define CNF_SD_LED_EN_1 0xfa
#define CNF_SD_LED_EN_2 0xfe
#define SDCREN 0x2 /* Enable access to MMC CTL regs. (flag in COMMAND_REG)*/
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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