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| 1 | /* |
| 2 | * linux/drivers/pcmcia/pxa2xx_palmtx.c |
| 3 | * |
| 4 | * Driver for Palm T|X PCMCIA |
| 5 | * |
| 6 | * Copyright (C) 2007-2008 Marek Vasut <marek.vasut@gmail.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | |
| 17 | #include <asm/mach-types.h> |
| 18 | |
| 19 | #include <mach/gpio.h> |
| 20 | #include <mach/palmtx.h> |
| 21 | |
| 22 | #include "soc_common.h" |
| 23 | |
| 24 | static int palmtx_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
| 25 | { |
| 26 | int ret; |
| 27 | |
| 28 | ret = gpio_request(GPIO_NR_PALMTX_PCMCIA_POWER1, "PCMCIA PWR1"); |
| 29 | if (ret) |
| 30 | goto err1; |
| 31 | ret = gpio_direction_output(GPIO_NR_PALMTX_PCMCIA_POWER1, 0); |
| 32 | if (ret) |
| 33 | goto err2; |
| 34 | |
| 35 | ret = gpio_request(GPIO_NR_PALMTX_PCMCIA_POWER2, "PCMCIA PWR2"); |
| 36 | if (ret) |
| 37 | goto err2; |
| 38 | ret = gpio_direction_output(GPIO_NR_PALMTX_PCMCIA_POWER2, 0); |
| 39 | if (ret) |
| 40 | goto err3; |
| 41 | |
| 42 | ret = gpio_request(GPIO_NR_PALMTX_PCMCIA_RESET, "PCMCIA RST"); |
| 43 | if (ret) |
| 44 | goto err3; |
| 45 | ret = gpio_direction_output(GPIO_NR_PALMTX_PCMCIA_RESET, 1); |
| 46 | if (ret) |
| 47 | goto err4; |
| 48 | |
| 49 | ret = gpio_request(GPIO_NR_PALMTX_PCMCIA_READY, "PCMCIA RDY"); |
| 50 | if (ret) |
| 51 | goto err4; |
| 52 | ret = gpio_direction_input(GPIO_NR_PALMTX_PCMCIA_READY); |
| 53 | if (ret) |
| 54 | goto err5; |
| 55 | |
| 56 | skt->socket.pci_irq = gpio_to_irq(GPIO_NR_PALMTX_PCMCIA_READY); |
| 57 | return 0; |
| 58 | |
| 59 | err5: |
| 60 | gpio_free(GPIO_NR_PALMTX_PCMCIA_READY); |
| 61 | err4: |
| 62 | gpio_free(GPIO_NR_PALMTX_PCMCIA_RESET); |
| 63 | err3: |
| 64 | gpio_free(GPIO_NR_PALMTX_PCMCIA_POWER2); |
| 65 | err2: |
| 66 | gpio_free(GPIO_NR_PALMTX_PCMCIA_POWER1); |
| 67 | err1: |
| 68 | return ret; |
| 69 | } |
| 70 | |
| 71 | static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
| 72 | { |
| 73 | gpio_free(GPIO_NR_PALMTX_PCMCIA_READY); |
| 74 | gpio_free(GPIO_NR_PALMTX_PCMCIA_RESET); |
| 75 | gpio_free(GPIO_NR_PALMTX_PCMCIA_POWER2); |
| 76 | gpio_free(GPIO_NR_PALMTX_PCMCIA_POWER1); |
| 77 | } |
| 78 | |
| 79 | static void palmtx_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
| 80 | struct pcmcia_state *state) |
| 81 | { |
| 82 | state->detect = 1; /* always inserted */ |
| 83 | state->ready = !!gpio_get_value(GPIO_NR_PALMTX_PCMCIA_READY); |
| 84 | state->bvd1 = 1; |
| 85 | state->bvd2 = 1; |
| 86 | state->wrprot = 0; |
| 87 | state->vs_3v = 1; |
| 88 | state->vs_Xv = 0; |
| 89 | } |
| 90 | |
| 91 | static int |
| 92 | palmtx_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
| 93 | const socket_state_t *state) |
| 94 | { |
| 95 | gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER1, 1); |
| 96 | gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1); |
| 97 | gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET, |
| 98 | !!(state->flags & SS_RESET)); |
| 99 | |
| 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | static void palmtx_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
| 104 | { |
| 105 | } |
| 106 | |
| 107 | static void palmtx_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
| 108 | { |
| 109 | } |
| 110 | |
| 111 | static struct pcmcia_low_level palmtx_pcmcia_ops = { |
| 112 | .owner = THIS_MODULE, |
| 113 | |
| 114 | .first = 0, |
| 115 | .nr = 1, |
| 116 | |
| 117 | .hw_init = palmtx_pcmcia_hw_init, |
| 118 | .hw_shutdown = palmtx_pcmcia_hw_shutdown, |
| 119 | |
| 120 | .socket_state = palmtx_pcmcia_socket_state, |
| 121 | .configure_socket = palmtx_pcmcia_configure_socket, |
| 122 | |
| 123 | .socket_init = palmtx_pcmcia_socket_init, |
| 124 | .socket_suspend = palmtx_pcmcia_socket_suspend, |
| 125 | }; |
| 126 | |
| 127 | static struct platform_device *palmtx_pcmcia_device; |
| 128 | |
| 129 | static int __init palmtx_pcmcia_init(void) |
| 130 | { |
| 131 | int ret; |
| 132 | |
| 133 | if (!machine_is_palmtx()) |
| 134 | return -ENODEV; |
| 135 | |
| 136 | palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
| 137 | if (!palmtx_pcmcia_device) |
| 138 | return -ENOMEM; |
| 139 | |
| 140 | ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops, |
| 141 | sizeof(palmtx_pcmcia_ops)); |
| 142 | |
| 143 | if (!ret) |
| 144 | ret = platform_device_add(palmtx_pcmcia_device); |
| 145 | |
| 146 | if (ret) |
| 147 | platform_device_put(palmtx_pcmcia_device); |
| 148 | |
| 149 | return ret; |
| 150 | } |
| 151 | |
| 152 | static void __exit palmtx_pcmcia_exit(void) |
| 153 | { |
| 154 | platform_device_unregister(palmtx_pcmcia_device); |
| 155 | } |
| 156 | |
| 157 | module_init(palmtx_pcmcia_init); |
| 158 | module_exit(palmtx_pcmcia_exit); |
| 159 | |
| 160 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); |
| 161 | MODULE_DESCRIPTION("PCMCIA support for Palm T|X"); |
| 162 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |
| 163 | MODULE_LICENSE("GPL"); |
| 164 |
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Tags:
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v2.6.34-rc5
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