+++ /dev/null
-/*
- * linux/arch/arm/mach-omap2/board-h4-mmc.c
- *
- * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
- * Authors: David Cohen <david.cohen@indt.org.br>
- * Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
- *
- * This code is based on linux/arch/arm/mach-omap2/board-n800-mmc.c, which is:
- * Copyright (C) 2006 Nokia Corporation
- * Author: Juha Yrjola
- *
- * 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/delay.h>
-#include <linux/platform_device.h>
-#include <linux/i2c/menelaus.h>
-
-#include <asm/mach-types.h>
-
-#include <mach/mmc.h>
-
-#ifdef CONFIG_MMC_OMAP
-
-/* Bit mask for slots detection interrupts */
-#define SD1_CD_ST (1 << 0)
-#define SD2_CD_ST (1 << 1)
-
-static int slot1_cover_open;
-static int slot2_cover_open;
-static struct device *mmc_device;
-
-/*
- * VMMC --> slot 1
- * VDCDC3_APE, VMCS2_APE --> slot 2
- */
-
-static int h4_mmc_switch_slot(struct device *dev, int slot)
-{
- int r = 0;
-
-#ifdef CONFIG_MMC_DEBUG
- dev_dbg(dev, "Choose slot %d\n", slot + 1);
-#endif
- if (slot == 0) {
- r = menelaus_enable_slot(2, 0);
- r |= menelaus_enable_slot(1, 1);
- } else {
- r = menelaus_enable_slot(1, 0);
- r |= menelaus_enable_slot(2, 1);
- }
-
- return r ? -ENODEV : 0;
-}
-
-static int h4_mmc_set_power(struct device *dev, int slot, int power_on,
- int vdd)
-{
- int mV = 0;
-
-#ifdef CONFIG_MMC_DEBUG
- dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
- power_on ? "on" : "off", vdd);
-#endif
- if (slot == 0) {
- if (!power_on)
- return menelaus_set_vmmc(3000);
- switch (1 << vdd) {
- case MMC_VDD_33_34:
- case MMC_VDD_32_33:
- case MMC_VDD_31_32:
- mV = 3100;
- break;
- case MMC_VDD_30_31:
- mV = 3000;
- break;
- case MMC_VDD_28_29:
- mV = 2800;
- break;
- case MMC_VDD_165_195:
- mV = 1850;
- break;
- default:
- BUG();
- }
- return menelaus_set_vmmc(mV);
- } else {
- if (!power_on)
- return menelaus_set_vdcdc(3, 3000);
- switch (1 << vdd) {
- case MMC_VDD_33_34:
- case MMC_VDD_32_33:
- mV = 3300;
- break;
- case MMC_VDD_30_31:
- case MMC_VDD_29_30:
- mV = 3000;
- break;
- case MMC_VDD_28_29:
- case MMC_VDD_27_28:
- mV = 2800;
- break;
- case MMC_VDD_24_25:
- case MMC_VDD_23_24:
- mV = 2400;
- break;
- case MMC_VDD_22_23:
- case MMC_VDD_21_22:
- mV = 2200;
- break;
- case MMC_VDD_20_21:
- mV = 2000;
- break;
- case MMC_VDD_165_195:
- mV = 1800;
- break;
- default:
- BUG();
- }
- return menelaus_set_vdcdc(3, mV);
- }
- return 0;
-}
-
-static int h4_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
-{
- int r = 0;
-
-#ifdef CONFIG_MMC_DEBUG
- dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
- bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
-#endif
- BUG_ON(slot != 0 && slot != 1);
- slot++;
- switch (bus_mode) {
- case MMC_BUSMODE_OPENDRAIN:
- r = menelaus_set_mmc_opendrain(slot, 1);
- break;
- case MMC_BUSMODE_PUSHPULL:
- r = menelaus_set_mmc_opendrain(slot, 0);
- break;
- default:
- BUG();
- }
- if (r != 0 && printk_ratelimit()) {
- dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
- slot);
- }
- return r;
-}
-
-static int h4_mmc_slot1_cover_state(struct device *dev, int slot)
-{
- BUG_ON(slot != 0);
- return slot1_cover_open;
-}
-
-static int h4_mmc_slot2_cover_state(struct device *dev, int slot)
-{
- BUG_ON(slot != 1);
- return slot2_cover_open;
-}
-
-static void h4_mmc_slot_callback(void *data, u8 card_mask)
-{
- int cover_open;
-
- cover_open = (card_mask & SD1_CD_ST) ? 0 : 1;
- if (cover_open != slot1_cover_open) {
- slot1_cover_open = cover_open;
- omap_mmc_notify_cover_event(mmc_device, 0, slot1_cover_open);
- }
-
- cover_open = (card_mask & SD2_CD_ST) ? 0 : 1;
- if (cover_open != slot2_cover_open) {
- slot2_cover_open = cover_open;
- omap_mmc_notify_cover_event(mmc_device, 1, slot2_cover_open);
- }
-}
-
-static int h4_mmc_late_init(struct device *dev)
-{
- int r;
-
- mmc_device = dev;
-
- r = menelaus_set_mmc_slot(1, 0, 0, 1);
- if (r < 0)
- goto out;
- r = menelaus_set_mmc_slot(2, 0, 0, 1);
- if (r < 0)
- goto out;
-
- r = menelaus_get_slot_pin_states();
- if (r < 0)
- goto out;
-
- if (r & SD1_CD_ST)
- slot1_cover_open = 1;
- else
- slot1_cover_open = 0;
-
- /* Slot pin bits seem to be inversed until first swith change,
- * but just for slot 2
- */
- if ((r == 0xf) || (r == (0xf & ~SD2_CD_ST)))
- r = ~r;
-
- if (r & SD2_CD_ST)
- slot2_cover_open = 1;
- else
- slot2_cover_open = 0;
-
- r = menelaus_register_mmc_callback(h4_mmc_slot_callback, NULL);
-
-out:
- return r;
-}
-
-static void h4_mmc_cleanup(struct device *dev)
-{
- menelaus_unregister_mmc_callback();
-}
-
-static struct omap_mmc_platform_data mmc1_data = {
- .nr_slots = 2,
- .switch_slot = h4_mmc_switch_slot,
- .init = h4_mmc_late_init,
- .cleanup = h4_mmc_cleanup,
- .dma_mask = 0xffffffff,
- .slots[0] = {
- .wires = 4,
- .set_power = h4_mmc_set_power,
- .set_bus_mode = h4_mmc_set_bus_mode,
- .get_cover_state= h4_mmc_slot1_cover_state,
- .ocr_mask = MMC_VDD_165_195 |
- MMC_VDD_28_29 | MMC_VDD_30_31 |
- MMC_VDD_32_33 | MMC_VDD_33_34,
- .name = "slot1",
- },
- .slots[1] = {
- .wires = 4,
- .set_power = h4_mmc_set_power,
- .set_bus_mode = h4_mmc_set_bus_mode,
- .get_cover_state= h4_mmc_slot2_cover_state,
- .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 |
- MMC_VDD_21_22 | MMC_VDD_22_23 | MMC_VDD_23_24 |
- MMC_VDD_24_25 | MMC_VDD_27_28 | MMC_VDD_28_29 |
- MMC_VDD_29_30 | MMC_VDD_30_31 | MMC_VDD_32_33 |
- MMC_VDD_33_34,
- .name = "slot2",
- },
-};
-
-static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
-
-void __init h4_mmc_init(void)
-{
- mmc_data[0] = &mmc1_data;
- omap2_init_mmc(mmc_data, OMAP24XX_NR_MMC);
-}
-
-#else
-
-void __init h4_mmc_init(void)
-{
-}
-
-#endif
-
projects / linux-2.6-omap-h63xx.git / commitdiff