Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 1 | /* |
| 2 | * at91_cf.c -- AT91 CompactFlash controller driver |
| 3 | * |
| 4 | * Copyright (C) 2005 David Brownell |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/kernel.h> |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 14 | #include <linux/platform_device.h> |
| 15 | #include <linux/errno.h> |
| 16 | #include <linux/init.h> |
| 17 | #include <linux/interrupt.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 18 | #include <linux/slab.h> |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 19 | #include <linux/gpio.h> |
Jean-Christophe PLAGNIOL-VILLARD | bcd2360 | 2012-10-30 05:12:23 +0800 | [diff] [blame] | 20 | #include <linux/platform_data/atmel.h> |
Joachim Eastwood | a843168 | 2013-06-06 10:24:17 +0200 | [diff] [blame^] | 21 | #include <linux/io.h> |
| 22 | #include <linux/sizes.h> |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 23 | |
| 24 | #include <pcmcia/ss.h> |
| 25 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 26 | #include <mach/at91rm9200_mc.h> |
Jean-Christophe PLAGNIOL-VILLARD | f363c40 | 2012-02-13 12:58:53 +0800 | [diff] [blame] | 27 | #include <mach/at91_ramc.h> |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 28 | |
| 29 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 30 | /* |
| 31 | * A0..A10 work in each range; A23 indicates I/O space; A25 is CFRNW; |
| 32 | * some other bit in {A24,A22..A11} is nREG to flag memory access |
| 33 | * (vs attributes). So more than 2KB/region would just be waste. |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 34 | * Note: These are offsets from the physical base address. |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 35 | */ |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 36 | #define CF_ATTR_PHYS (0) |
| 37 | #define CF_IO_PHYS (1 << 23) |
| 38 | #define CF_MEM_PHYS (0x017ff800) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 39 | |
| 40 | /*--------------------------------------------------------------------------*/ |
| 41 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 42 | struct at91_cf_socket { |
| 43 | struct pcmcia_socket socket; |
| 44 | |
| 45 | unsigned present:1; |
| 46 | |
| 47 | struct platform_device *pdev; |
| 48 | struct at91_cf_data *board; |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 49 | |
| 50 | unsigned long phys_baseaddr; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 51 | }; |
| 52 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 53 | static inline int at91_cf_present(struct at91_cf_socket *cf) |
| 54 | { |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 55 | return !gpio_get_value(cf->board->det_pin); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | /*--------------------------------------------------------------------------*/ |
| 59 | |
| 60 | static int at91_cf_ss_init(struct pcmcia_socket *s) |
| 61 | { |
| 62 | return 0; |
| 63 | } |
| 64 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 65 | static irqreturn_t at91_cf_irq(int irq, void *_cf) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 66 | { |
Jeff Garzik | c7bec5a | 2006-10-06 15:00:58 -0400 | [diff] [blame] | 67 | struct at91_cf_socket *cf = _cf; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 68 | |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 69 | if (irq == gpio_to_irq(cf->board->det_pin)) { |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 70 | unsigned present = at91_cf_present(cf); |
| 71 | |
| 72 | /* kick pccard as needed */ |
| 73 | if (present != cf->present) { |
| 74 | cf->present = present; |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 75 | dev_dbg(&cf->pdev->dev, "card %s\n", |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 76 | present ? "present" : "gone"); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 77 | pcmcia_parse_events(&cf->socket, SS_DETECT); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | return IRQ_HANDLED; |
| 82 | } |
| 83 | |
| 84 | static int at91_cf_get_status(struct pcmcia_socket *s, u_int *sp) |
| 85 | { |
| 86 | struct at91_cf_socket *cf; |
| 87 | |
| 88 | if (!sp) |
| 89 | return -EINVAL; |
| 90 | |
| 91 | cf = container_of(s, struct at91_cf_socket, socket); |
| 92 | |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 93 | /* NOTE: CF is always 3VCARD */ |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 94 | if (at91_cf_present(cf)) { |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 95 | int rdy = gpio_is_valid(cf->board->irq_pin); /* RDY/nIRQ */ |
| 96 | int vcc = gpio_is_valid(cf->board->vcc_pin); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 97 | |
| 98 | *sp = SS_DETECT | SS_3VCARD; |
Joachim Eastwood | e39506b | 2013-06-06 10:24:14 +0200 | [diff] [blame] | 99 | if (!rdy || gpio_get_value(cf->board->irq_pin)) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 100 | *sp |= SS_READY; |
Joachim Eastwood | e39506b | 2013-06-06 10:24:14 +0200 | [diff] [blame] | 101 | if (!vcc || gpio_get_value(cf->board->vcc_pin)) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 102 | *sp |= SS_POWERON; |
| 103 | } else |
| 104 | *sp = 0; |
| 105 | |
| 106 | return 0; |
| 107 | } |
| 108 | |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 109 | static int |
| 110 | at91_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 111 | { |
| 112 | struct at91_cf_socket *cf; |
| 113 | |
| 114 | cf = container_of(sock, struct at91_cf_socket, socket); |
| 115 | |
| 116 | /* switch Vcc if needed and possible */ |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 117 | if (gpio_is_valid(cf->board->vcc_pin)) { |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 118 | switch (s->Vcc) { |
| 119 | case 0: |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 120 | gpio_set_value(cf->board->vcc_pin, 0); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 121 | break; |
| 122 | case 33: |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 123 | gpio_set_value(cf->board->vcc_pin, 1); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 124 | break; |
| 125 | default: |
| 126 | return -EINVAL; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | /* toggle reset if needed */ |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 131 | gpio_set_value(cf->board->rst_pin, s->flags & SS_RESET); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 132 | |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 133 | dev_dbg(&cf->pdev->dev, "Vcc %d, io_irq %d, flags %04x csc %04x\n", |
| 134 | s->Vcc, s->io_irq, s->flags, s->csc_mask); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 135 | |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | static int at91_cf_ss_suspend(struct pcmcia_socket *s) |
| 140 | { |
| 141 | return at91_cf_set_socket(s, &dead_socket); |
| 142 | } |
| 143 | |
| 144 | /* we already mapped the I/O region */ |
| 145 | static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io) |
| 146 | { |
| 147 | struct at91_cf_socket *cf; |
| 148 | u32 csr; |
| 149 | |
| 150 | cf = container_of(s, struct at91_cf_socket, socket); |
| 151 | io->flags &= (MAP_ACTIVE | MAP_16BIT | MAP_AUTOSZ); |
| 152 | |
| 153 | /* |
| 154 | * Use 16 bit accesses unless/until we need 8-bit i/o space. |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 155 | */ |
Jean-Christophe PLAGNIOL-VILLARD | f363c40 | 2012-02-13 12:58:53 +0800 | [diff] [blame] | 156 | csr = at91_ramc_read(0, AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 157 | |
| 158 | /* |
| 159 | * NOTE: this CF controller ignores IOIS16, so we can't really do |
| 160 | * MAP_AUTOSZ. The 16bit mode allows single byte access on either |
| 161 | * D0-D7 (even addr) or D8-D15 (odd), so it's close enough for many |
| 162 | * purposes (and handles ide-cs). |
| 163 | * |
| 164 | * The 8bit mode is needed for odd byte access on D0-D7. It seems |
| 165 | * some cards only like that way to get at the odd byte, despite |
| 166 | * CF 3.0 spec table 35 also giving the D8-D15 option. |
| 167 | */ |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 168 | if (!(io->flags & (MAP_16BIT | MAP_AUTOSZ))) { |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 169 | csr |= AT91_SMC_DBW_8; |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 170 | dev_dbg(&cf->pdev->dev, "8bit i/o bus\n"); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 171 | } else { |
| 172 | csr |= AT91_SMC_DBW_16; |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 173 | dev_dbg(&cf->pdev->dev, "16bit i/o bus\n"); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 174 | } |
Jean-Christophe PLAGNIOL-VILLARD | f363c40 | 2012-02-13 12:58:53 +0800 | [diff] [blame] | 175 | at91_ramc_write(0, AT91_SMC_CSR(cf->board->chipselect), csr); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 176 | |
| 177 | io->start = cf->socket.io_offset; |
| 178 | io->stop = io->start + SZ_2K - 1; |
| 179 | |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | /* pcmcia layer maps/unmaps mem regions */ |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 184 | static int |
| 185 | at91_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 186 | { |
| 187 | struct at91_cf_socket *cf; |
| 188 | |
| 189 | if (map->card_start) |
| 190 | return -EINVAL; |
| 191 | |
| 192 | cf = container_of(s, struct at91_cf_socket, socket); |
| 193 | |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 194 | map->flags &= (MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 195 | if (map->flags & MAP_ATTRIB) |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 196 | map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 197 | else |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 198 | map->static_start = cf->phys_baseaddr + CF_MEM_PHYS; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | static struct pccard_operations at91_cf_ops = { |
| 204 | .init = at91_cf_ss_init, |
| 205 | .suspend = at91_cf_ss_suspend, |
| 206 | .get_status = at91_cf_get_status, |
| 207 | .set_socket = at91_cf_set_socket, |
| 208 | .set_io_map = at91_cf_set_io_map, |
| 209 | .set_mem_map = at91_cf_set_mem_map, |
| 210 | }; |
| 211 | |
| 212 | /*--------------------------------------------------------------------------*/ |
| 213 | |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 214 | static int __init at91_cf_probe(struct platform_device *pdev) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 215 | { |
| 216 | struct at91_cf_socket *cf; |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 217 | struct at91_cf_data *board = pdev->dev.platform_data; |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 218 | struct resource *io; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 219 | int status; |
| 220 | |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 221 | if (!board || !gpio_is_valid(board->det_pin) || !gpio_is_valid(board->rst_pin)) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 222 | return -ENODEV; |
| 223 | |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 224 | io = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 225 | if (!io) |
| 226 | return -ENODEV; |
| 227 | |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 228 | cf = devm_kzalloc(&pdev->dev, sizeof(*cf), GFP_KERNEL); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 229 | if (!cf) |
| 230 | return -ENOMEM; |
| 231 | |
| 232 | cf->board = board; |
| 233 | cf->pdev = pdev; |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 234 | cf->phys_baseaddr = io->start; |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 235 | platform_set_drvdata(pdev, cf); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 236 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 237 | /* must be a GPIO; ergo must trigger on both edges */ |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 238 | status = devm_gpio_request(&pdev->dev, board->det_pin, "cf_det"); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 239 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 240 | return status; |
| 241 | |
| 242 | status = devm_request_irq(&pdev->dev, gpio_to_irq(board->det_pin), |
| 243 | at91_cf_irq, 0, "at91_cf detect", cf); |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 244 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 245 | return status; |
| 246 | |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 247 | device_init_wakeup(&pdev->dev, 1); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 248 | |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 249 | status = devm_gpio_request(&pdev->dev, board->rst_pin, "cf_rst"); |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 250 | if (status < 0) |
| 251 | goto fail0a; |
| 252 | |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 253 | if (gpio_is_valid(board->vcc_pin)) { |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 254 | status = devm_gpio_request(&pdev->dev, board->vcc_pin, "cf_vcc"); |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 255 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 256 | goto fail0a; |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 257 | } |
| 258 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 259 | /* |
| 260 | * The card driver will request this irq later as needed. |
| 261 | * but it causes lots of "irqNN: nobody cared" messages |
| 262 | * unless we report that we handle everything (sigh). |
| 263 | * (Note: DK board doesn't wire the IRQ pin...) |
| 264 | */ |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 265 | if (gpio_is_valid(board->irq_pin)) { |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 266 | status = devm_gpio_request(&pdev->dev, board->irq_pin, "cf_irq"); |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 267 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 268 | goto fail0a; |
| 269 | |
| 270 | status = devm_request_irq(&pdev->dev, gpio_to_irq(board->irq_pin), |
| 271 | at91_cf_irq, IRQF_SHARED, "at91_cf", cf); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 272 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 273 | goto fail0a; |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 274 | cf->socket.pci_irq = gpio_to_irq(board->irq_pin); |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 275 | } else |
Yinghai Lu | 9130add | 2008-08-19 20:49:52 -0700 | [diff] [blame] | 276 | cf->socket.pci_irq = nr_irqs + 1; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 277 | |
| 278 | /* pcmcia layer only remaps "real" memory not iospace */ |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 279 | cf->socket.io_offset = (unsigned long) devm_ioremap(&pdev->dev, |
| 280 | cf->phys_baseaddr + CF_IO_PHYS, SZ_2K); |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 281 | if (!cf->socket.io_offset) { |
| 282 | status = -ENXIO; |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 283 | goto fail0a; |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 284 | } |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 285 | |
Andrew Victor | 40a0017 | 2006-12-04 12:26:36 +0200 | [diff] [blame] | 286 | /* reserve chip-select regions */ |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 287 | if (!devm_request_mem_region(&pdev->dev, io->start, resource_size(io), "at91_cf")) { |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 288 | status = -ENXIO; |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 289 | goto fail0a; |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 290 | } |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 291 | |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 292 | dev_info(&pdev->dev, "irqs det #%d, io #%d\n", |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 293 | gpio_to_irq(board->det_pin), gpio_to_irq(board->irq_pin)); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 294 | |
| 295 | cf->socket.owner = THIS_MODULE; |
Alexey Dobriyan | e4a3c3f | 2007-02-13 22:39:27 -0800 | [diff] [blame] | 296 | cf->socket.dev.parent = &pdev->dev; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 297 | cf->socket.ops = &at91_cf_ops; |
| 298 | cf->socket.resource_ops = &pccard_static_ops; |
| 299 | cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP |
| 300 | | SS_CAP_MEM_ALIGN; |
| 301 | cf->socket.map_size = SZ_2K; |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 302 | cf->socket.io[0].res = io; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 303 | |
| 304 | status = pcmcia_register_socket(&cf->socket); |
| 305 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 306 | goto fail0a; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 307 | |
| 308 | return 0; |
| 309 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 310 | fail0a: |
David Brownell | 1fbece1 | 2006-07-01 13:39:55 -0700 | [diff] [blame] | 311 | device_init_wakeup(&pdev->dev, 0); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 312 | return status; |
| 313 | } |
| 314 | |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 315 | static int __exit at91_cf_remove(struct platform_device *pdev) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 316 | { |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 317 | struct at91_cf_socket *cf = platform_get_drvdata(pdev); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 318 | |
| 319 | pcmcia_unregister_socket(&cf->socket); |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 320 | device_init_wakeup(&pdev->dev, 0); |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 321 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 322 | return 0; |
| 323 | } |
| 324 | |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 325 | #ifdef CONFIG_PM |
| 326 | |
| 327 | static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg) |
| 328 | { |
| 329 | struct at91_cf_socket *cf = platform_get_drvdata(pdev); |
| 330 | struct at91_cf_data *board = cf->board; |
| 331 | |
David Brownell | 1fbece1 | 2006-07-01 13:39:55 -0700 | [diff] [blame] | 332 | if (device_may_wakeup(&pdev->dev)) { |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 333 | enable_irq_wake(gpio_to_irq(board->det_pin)); |
| 334 | if (gpio_is_valid(board->irq_pin)) |
| 335 | enable_irq_wake(gpio_to_irq(board->irq_pin)); |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 336 | } |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 337 | return 0; |
| 338 | } |
| 339 | |
| 340 | static int at91_cf_resume(struct platform_device *pdev) |
| 341 | { |
Marc Pignat | 9af2037 | 2007-05-31 00:40:44 -0700 | [diff] [blame] | 342 | struct at91_cf_socket *cf = platform_get_drvdata(pdev); |
| 343 | struct at91_cf_data *board = cf->board; |
| 344 | |
| 345 | if (device_may_wakeup(&pdev->dev)) { |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 346 | disable_irq_wake(gpio_to_irq(board->det_pin)); |
| 347 | if (gpio_is_valid(board->irq_pin)) |
| 348 | disable_irq_wake(gpio_to_irq(board->irq_pin)); |
Marc Pignat | 9af2037 | 2007-05-31 00:40:44 -0700 | [diff] [blame] | 349 | } |
| 350 | |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 351 | return 0; |
| 352 | } |
| 353 | |
| 354 | #else |
| 355 | #define at91_cf_suspend NULL |
| 356 | #define at91_cf_resume NULL |
| 357 | #endif |
| 358 | |
| 359 | static struct platform_driver at91_cf_driver = { |
| 360 | .driver = { |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 361 | .name = "at91_cf", |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 362 | .owner = THIS_MODULE, |
| 363 | }, |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 364 | .remove = __exit_p(at91_cf_remove), |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 365 | .suspend = at91_cf_suspend, |
| 366 | .resume = at91_cf_resume, |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 367 | }; |
| 368 | |
| 369 | /*--------------------------------------------------------------------------*/ |
| 370 | |
| 371 | static int __init at91_cf_init(void) |
| 372 | { |
David Brownell | 02c8359 | 2007-05-06 14:48:42 -0700 | [diff] [blame] | 373 | return platform_driver_probe(&at91_cf_driver, at91_cf_probe); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 374 | } |
| 375 | module_init(at91_cf_init); |
| 376 | |
| 377 | static void __exit at91_cf_exit(void) |
| 378 | { |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 379 | platform_driver_unregister(&at91_cf_driver); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 380 | } |
| 381 | module_exit(at91_cf_exit); |
| 382 | |
| 383 | MODULE_DESCRIPTION("AT91 Compact Flash Driver"); |
| 384 | MODULE_AUTHOR("David Brownell"); |
| 385 | MODULE_LICENSE("GPL"); |
Kay Sievers | 12c2c01 | 2008-04-15 14:34:34 -0700 | [diff] [blame] | 386 | MODULE_ALIAS("platform:at91_cf"); |