tmio_core.c (1900B)
1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright(c) 2009 Ian Molton <spyro@f2s.com> 4 */ 5 6#include <linux/export.h> 7#include <linux/mfd/tmio.h> 8 9#define CNF_CMD 0x04 10#define CNF_CTL_BASE 0x10 11#define CNF_INT_PIN 0x3d 12#define CNF_STOP_CLK_CTL 0x40 13#define CNF_GCLK_CTL 0x41 14#define CNF_SD_CLK_MODE 0x42 15#define CNF_PIN_STATUS 0x44 16#define CNF_PWR_CTL_1 0x48 17#define CNF_PWR_CTL_2 0x49 18#define CNF_PWR_CTL_3 0x4a 19#define CNF_CARD_DETECT_MODE 0x4c 20#define CNF_SD_SLOT 0x50 21#define CNF_EXT_GCLK_CTL_1 0xf0 22#define CNF_EXT_GCLK_CTL_2 0xf1 23#define CNF_EXT_GCLK_CTL_3 0xf9 24#define CNF_SD_LED_EN_1 0xfa 25#define CNF_SD_LED_EN_2 0xfe 26 27#define SDCREN 0x2 /* Enable access to MMC CTL regs. (flag in COMMAND_REG)*/ 28 29int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base) 30{ 31 /* Enable the MMC/SD Control registers */ 32 sd_config_write16(cnf, shift, CNF_CMD, SDCREN); 33 sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe); 34 35 /* Disable SD power during suspend */ 36 sd_config_write8(cnf, shift, CNF_PWR_CTL_3, 0x01); 37 38 /* The below is required but why? FIXME */ 39 sd_config_write8(cnf, shift, CNF_STOP_CLK_CTL, 0x1f); 40 41 /* Power down SD bus */ 42 sd_config_write8(cnf, shift, CNF_PWR_CTL_2, 0x00); 43 44 return 0; 45} 46EXPORT_SYMBOL(tmio_core_mmc_enable); 47 48int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base) 49{ 50 51 /* Enable the MMC/SD Control registers */ 52 sd_config_write16(cnf, shift, CNF_CMD, SDCREN); 53 sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe); 54 55 return 0; 56} 57EXPORT_SYMBOL(tmio_core_mmc_resume); 58 59void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state) 60{ 61 sd_config_write8(cnf, shift, CNF_PWR_CTL_2, state ? 0x02 : 0x00); 62} 63EXPORT_SYMBOL(tmio_core_mmc_pwr); 64 65void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state) 66{ 67 sd_config_write8(cnf, shift, CNF_SD_CLK_MODE, state ? 1 : 0); 68} 69EXPORT_SYMBOL(tmio_core_mmc_clk_div); 70