mirror of https://gitee.com/openkylin/linux.git
125 lines
2.7 KiB
C
125 lines
2.7 KiB
C
/*
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* linux/arch/arm/mach-omap1/board-sx1-mmc.c
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*
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* Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
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* Author: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
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*
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* This code is based on linux/arch/arm/mach-omap1/board-h2-mmc.c, which is:
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* Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <asm/arch/hardware.h>
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#include <asm/arch/mmc.h>
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#include <asm/arch/gpio.h>
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#ifdef CONFIG_MMC_OMAP
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static int slot_cover_open;
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static struct device *mmc_device;
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static int sx1_mmc_set_power(struct device *dev, int slot, int power_on,
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int vdd)
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{
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int err;
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u8 dat = 0;
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#ifdef CONFIG_MMC_DEBUG
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dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
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power_on ? "on" : "off", vdd);
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#endif
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if (slot != 0) {
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dev_err(dev, "No such slot %d\n", slot + 1);
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return -ENODEV;
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}
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err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat);
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if (err < 0)
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return err;
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if (power_on)
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dat |= SOFIA_MMC_POWER;
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else
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dat &= ~SOFIA_MMC_POWER;
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return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat);
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}
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static int sx1_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
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{
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#ifdef CONFIG_MMC_DEBUG
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dev_dbg(dev, "Set slot %d bus_mode %s\n", slot + 1,
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bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
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#endif
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if (slot != 0) {
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dev_err(dev, "No such slot %d\n", slot + 1);
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return -ENODEV;
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}
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return 0;
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}
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static int sx1_mmc_get_cover_state(struct device *dev, int slot)
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{
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BUG_ON(slot != 0);
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return slot_cover_open;
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}
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void sx1_mmc_slot_cover_handler(void *arg, int state)
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{
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if (mmc_device == NULL)
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return;
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slot_cover_open = state;
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omap_mmc_notify_cover_event(mmc_device, 0, state);
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}
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static int sx1_mmc_late_init(struct device *dev)
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{
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int ret = 0;
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mmc_device = dev;
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return ret;
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}
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static void sx1_mmc_cleanup(struct device *dev)
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{
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}
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static struct omap_mmc_platform_data sx1_mmc_data = {
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.nr_slots = 1,
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.switch_slot = NULL,
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.init = sx1_mmc_late_init,
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.cleanup = sx1_mmc_cleanup,
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.slots[0] = {
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.set_power = sx1_mmc_set_power,
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.set_bus_mode = sx1_mmc_set_bus_mode,
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.get_ro = NULL,
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.get_cover_state = sx1_mmc_get_cover_state,
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.ocr_mask = MMC_VDD_28_29 | MMC_VDD_30_31 |
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MMC_VDD_32_33 | MMC_VDD_33_34,
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.name = "mmcblk",
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},
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};
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void __init sx1_mmc_init(void)
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{
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omap_set_mmc_info(1, &sx1_mmc_data);
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}
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#else
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void __init sx1_mmc_init(void)
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{
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}
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void sx1_mmc_slot_cover_handler(void *arg, int state)
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{
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}
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#endif
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