Marek Vasut | addff0f | 2010-03-10 04:16:28 +0100 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/pcmcia/pxa2xx_vpac270.c |
| 3 | * |
| 4 | * Driver for Voipac PXA270 PCMCIA and CF sockets |
| 5 | * |
| 6 | * Copyright (C) 2010 |
| 7 | * Marek Vasut <marek.vasut@gmail.com> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | |
| 18 | #include <asm/mach-types.h> |
| 19 | |
| 20 | #include <mach/gpio.h> |
| 21 | #include <mach/vpac270.h> |
| 22 | |
| 23 | #include "soc_common.h" |
| 24 | |
| 25 | static struct pcmcia_irqs cd_irqs[] = { |
| 26 | { |
| 27 | .sock = 0, |
| 28 | .irq = IRQ_GPIO(GPIO84_VPAC270_PCMCIA_CD), |
| 29 | .str = "PCMCIA CD" |
| 30 | }, |
| 31 | { |
| 32 | .sock = 1, |
| 33 | .irq = IRQ_GPIO(GPIO17_VPAC270_CF_CD), |
| 34 | .str = "CF CD" |
| 35 | }, |
| 36 | }; |
| 37 | |
| 38 | static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
| 39 | { |
| 40 | int ret; |
| 41 | |
| 42 | if (skt->nr == 0) { |
| 43 | ret = gpio_request(GPIO84_VPAC270_PCMCIA_CD, "PCMCIA CD"); |
| 44 | if (ret) |
| 45 | goto err1; |
| 46 | ret = gpio_direction_input(GPIO84_VPAC270_PCMCIA_CD); |
| 47 | if (ret) |
| 48 | goto err2; |
| 49 | |
| 50 | ret = gpio_request(GPIO35_VPAC270_PCMCIA_RDY, "PCMCIA RDY"); |
| 51 | if (ret) |
| 52 | goto err2; |
| 53 | ret = gpio_direction_input(GPIO35_VPAC270_PCMCIA_RDY); |
| 54 | if (ret) |
| 55 | goto err3; |
| 56 | |
| 57 | ret = gpio_request(GPIO107_VPAC270_PCMCIA_PPEN, "PCMCIA PPEN"); |
| 58 | if (ret) |
| 59 | goto err3; |
| 60 | ret = gpio_direction_output(GPIO107_VPAC270_PCMCIA_PPEN, 0); |
| 61 | if (ret) |
| 62 | goto err4; |
| 63 | |
| 64 | ret = gpio_request(GPIO11_VPAC270_PCMCIA_RESET, "PCMCIA RESET"); |
| 65 | if (ret) |
| 66 | goto err4; |
| 67 | ret = gpio_direction_output(GPIO11_VPAC270_PCMCIA_RESET, 0); |
| 68 | if (ret) |
| 69 | goto err5; |
| 70 | |
| 71 | skt->socket.pci_irq = gpio_to_irq(GPIO35_VPAC270_PCMCIA_RDY); |
| 72 | |
| 73 | return soc_pcmcia_request_irqs(skt, &cd_irqs[0], 1); |
| 74 | |
| 75 | err5: |
| 76 | gpio_free(GPIO11_VPAC270_PCMCIA_RESET); |
| 77 | err4: |
| 78 | gpio_free(GPIO107_VPAC270_PCMCIA_PPEN); |
| 79 | err3: |
| 80 | gpio_free(GPIO35_VPAC270_PCMCIA_RDY); |
| 81 | err2: |
| 82 | gpio_free(GPIO84_VPAC270_PCMCIA_CD); |
| 83 | err1: |
| 84 | return ret; |
| 85 | |
| 86 | } else { |
| 87 | ret = gpio_request(GPIO17_VPAC270_CF_CD, "CF CD"); |
| 88 | if (ret) |
| 89 | goto err6; |
| 90 | ret = gpio_direction_input(GPIO17_VPAC270_CF_CD); |
| 91 | if (ret) |
| 92 | goto err7; |
| 93 | |
| 94 | ret = gpio_request(GPIO12_VPAC270_CF_RDY, "CF RDY"); |
| 95 | if (ret) |
| 96 | goto err7; |
| 97 | ret = gpio_direction_input(GPIO12_VPAC270_CF_RDY); |
| 98 | if (ret) |
| 99 | goto err8; |
| 100 | |
| 101 | ret = gpio_request(GPIO16_VPAC270_CF_RESET, "CF RESET"); |
| 102 | if (ret) |
| 103 | goto err8; |
| 104 | ret = gpio_direction_output(GPIO16_VPAC270_CF_RESET, 0); |
| 105 | if (ret) |
| 106 | goto err9; |
| 107 | |
| 108 | skt->socket.pci_irq = gpio_to_irq(GPIO12_VPAC270_CF_RDY); |
| 109 | |
| 110 | return soc_pcmcia_request_irqs(skt, &cd_irqs[1], 1); |
| 111 | |
| 112 | err9: |
| 113 | gpio_free(GPIO16_VPAC270_CF_RESET); |
| 114 | err8: |
| 115 | gpio_free(GPIO12_VPAC270_CF_RDY); |
| 116 | err7: |
| 117 | gpio_free(GPIO17_VPAC270_CF_CD); |
| 118 | err6: |
| 119 | return ret; |
| 120 | |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
| 125 | { |
| 126 | gpio_free(GPIO11_VPAC270_PCMCIA_RESET); |
| 127 | gpio_free(GPIO107_VPAC270_PCMCIA_PPEN); |
| 128 | gpio_free(GPIO35_VPAC270_PCMCIA_RDY); |
| 129 | gpio_free(GPIO84_VPAC270_PCMCIA_CD); |
| 130 | gpio_free(GPIO16_VPAC270_CF_RESET); |
| 131 | gpio_free(GPIO12_VPAC270_CF_RDY); |
| 132 | gpio_free(GPIO17_VPAC270_CF_CD); |
| 133 | } |
| 134 | |
| 135 | static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
| 136 | struct pcmcia_state *state) |
| 137 | { |
| 138 | if (skt->nr == 0) { |
| 139 | state->detect = !gpio_get_value(GPIO84_VPAC270_PCMCIA_CD); |
| 140 | state->ready = !!gpio_get_value(GPIO35_VPAC270_PCMCIA_RDY); |
| 141 | } else { |
| 142 | state->detect = !gpio_get_value(GPIO17_VPAC270_CF_CD); |
| 143 | state->ready = !!gpio_get_value(GPIO12_VPAC270_CF_RDY); |
| 144 | } |
| 145 | state->bvd1 = 1; |
| 146 | state->bvd2 = 1; |
| 147 | state->wrprot = 0; |
| 148 | state->vs_3v = 1; |
| 149 | state->vs_Xv = 0; |
| 150 | } |
| 151 | |
| 152 | static int |
| 153 | vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
| 154 | const socket_state_t *state) |
| 155 | { |
| 156 | if (skt->nr == 0) { |
| 157 | gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET, |
| 158 | (state->flags & SS_RESET)); |
| 159 | gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN, |
| 160 | !(state->Vcc == 33 || state->Vcc == 50)); |
| 161 | } else { |
| 162 | gpio_set_value(GPIO16_VPAC270_CF_RESET, |
| 163 | (state->flags & SS_RESET)); |
| 164 | } |
| 165 | |
| 166 | return 0; |
| 167 | } |
| 168 | |
| 169 | static void vpac270_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
| 170 | { |
| 171 | } |
| 172 | |
| 173 | static void vpac270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
| 174 | { |
| 175 | } |
| 176 | |
| 177 | static struct pcmcia_low_level vpac270_pcmcia_ops = { |
| 178 | .owner = THIS_MODULE, |
| 179 | |
| 180 | .first = 0, |
| 181 | .nr = 2, |
| 182 | |
| 183 | .hw_init = vpac270_pcmcia_hw_init, |
| 184 | .hw_shutdown = vpac270_pcmcia_hw_shutdown, |
| 185 | |
| 186 | .socket_state = vpac270_pcmcia_socket_state, |
| 187 | .configure_socket = vpac270_pcmcia_configure_socket, |
| 188 | |
| 189 | .socket_init = vpac270_pcmcia_socket_init, |
| 190 | .socket_suspend = vpac270_pcmcia_socket_suspend, |
| 191 | }; |
| 192 | |
| 193 | static struct platform_device *vpac270_pcmcia_device; |
| 194 | |
| 195 | static int __init vpac270_pcmcia_init(void) |
| 196 | { |
| 197 | int ret; |
| 198 | |
| 199 | if (!machine_is_vpac270()) |
| 200 | return -ENODEV; |
| 201 | |
| 202 | vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
| 203 | if (!vpac270_pcmcia_device) |
| 204 | return -ENOMEM; |
| 205 | |
| 206 | ret = platform_device_add_data(vpac270_pcmcia_device, |
| 207 | &vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops)); |
| 208 | |
| 209 | if (!ret) |
| 210 | ret = platform_device_add(vpac270_pcmcia_device); |
| 211 | |
| 212 | if (ret) |
| 213 | platform_device_put(vpac270_pcmcia_device); |
| 214 | |
| 215 | return ret; |
| 216 | } |
| 217 | |
| 218 | static void __exit vpac270_pcmcia_exit(void) |
| 219 | { |
| 220 | platform_device_unregister(vpac270_pcmcia_device); |
| 221 | } |
| 222 | |
| 223 | module_init(vpac270_pcmcia_init); |
| 224 | module_exit(vpac270_pcmcia_exit); |
| 225 | |
| 226 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); |
| 227 | MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270"); |
| 228 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |
| 229 | MODULE_LICENSE("GPL"); |