| Carlos Eduardo Aguiar | 087c503 | 2007-11-30 01:52:53 -0400 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-omap1/board-sx1-mmc.c |
| 3 | * |
| 4 | * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT |
| 5 | * Author: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br> |
| 6 | * |
| 7 | * This code is based on linux/arch/arm/mach-omap1/board-h2-mmc.c, which is: |
| 8 | * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | */ |
| 14 | |
| 15 | #include <asm/arch/hardware.h> |
| 16 | #include <asm/arch/mmc.h> |
| 17 | #include <asm/arch/gpio.h> |
| 18 | |
| 19 | #ifdef CONFIG_MMC_OMAP |
| 20 | static int slot_cover_open; |
| 21 | static struct device *mmc_device; |
| 22 | |
| 23 | static int sx1_mmc_set_power(struct device *dev, int slot, int power_on, |
| 24 | int vdd) |
| 25 | { |
| 26 | int err; |
| 27 | u8 dat = 0; |
| 28 | |
| 29 | #ifdef CONFIG_MMC_DEBUG |
| 30 | dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1, |
| 31 | power_on ? "on" : "off", vdd); |
| 32 | #endif |
| 33 | |
| 34 | if (slot != 0) { |
| 35 | dev_err(dev, "No such slot %d\n", slot + 1); |
| 36 | return -ENODEV; |
| 37 | } |
| 38 | |
| 39 | err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat); |
| 40 | if (err < 0) |
| 41 | return err; |
| 42 | |
| 43 | if (power_on) |
| 44 | dat |= SOFIA_MMC_POWER; |
| 45 | else |
| 46 | dat &= ~SOFIA_MMC_POWER; |
| 47 | |
| 48 | return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat); |
| 49 | } |
| 50 | |
| 51 | static int sx1_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode) |
| 52 | { |
| 53 | #ifdef CONFIG_MMC_DEBUG |
| 54 | dev_dbg(dev, "Set slot %d bus_mode %s\n", slot + 1, |
| 55 | bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull"); |
| 56 | #endif |
| 57 | if (slot != 0) { |
| 58 | dev_err(dev, "No such slot %d\n", slot + 1); |
| 59 | return -ENODEV; |
| 60 | } |
| 61 | |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | static int sx1_mmc_get_cover_state(struct device *dev, int slot) |
| 66 | { |
| 67 | BUG_ON(slot != 0); |
| 68 | |
| 69 | return slot_cover_open; |
| 70 | } |
| 71 | |
| 72 | void sx1_mmc_slot_cover_handler(void *arg, int state) |
| 73 | { |
| 74 | if (mmc_device == NULL) |
| 75 | return; |
| 76 | |
| 77 | slot_cover_open = state; |
| 78 | omap_mmc_notify_cover_event(mmc_device, 0, state); |
| 79 | } |
| 80 | |
| 81 | static int sx1_mmc_late_init(struct device *dev) |
| 82 | { |
| 83 | int ret = 0; |
| 84 | |
| 85 | mmc_device = dev; |
| 86 | |
| 87 | return ret; |
| 88 | } |
| 89 | |
| 90 | static void sx1_mmc_cleanup(struct device *dev) |
| 91 | { |
| 92 | } |
| 93 | |
| 94 | static struct omap_mmc_platform_data sx1_mmc_data = { |
| 95 | .nr_slots = 1, |
| 96 | .switch_slot = NULL, |
| 97 | .init = sx1_mmc_late_init, |
| 98 | .cleanup = sx1_mmc_cleanup, |
| 99 | .slots[0] = { |
| 100 | .set_power = sx1_mmc_set_power, |
| 101 | .set_bus_mode = sx1_mmc_set_bus_mode, |
| 102 | .get_ro = NULL, |
| 103 | .get_cover_state = sx1_mmc_get_cover_state, |
| 104 | .ocr_mask = MMC_VDD_28_29 | MMC_VDD_30_31 | |
| 105 | MMC_VDD_32_33 | MMC_VDD_33_34, |
| 106 | .name = "mmcblk", |
| 107 | }, |
| 108 | }; |
| 109 | |
| 110 | void __init sx1_mmc_init(void) |
| 111 | { |
| 112 | omap_set_mmc_info(1, &sx1_mmc_data); |
| 113 | } |
| 114 | |
| 115 | #else |
| 116 | |
| 117 | void __init sx1_mmc_init(void) |
| 118 | { |
| 119 | } |
| 120 | |
| 121 | void sx1_mmc_slot_cover_handler(void *arg, int state) |
| 122 | { |
| 123 | } |
| 124 | #endif |