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> |
Joachim Eastwood | ed9084e | 2013-06-06 10:24:18 +0200 | [diff] [blame] | 23 | #include <linux/of.h> |
| 24 | #include <linux/of_device.h> |
| 25 | #include <linux/of_gpio.h> |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 26 | |
| 27 | #include <pcmcia/ss.h> |
| 28 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 29 | #include <mach/at91rm9200_mc.h> |
Jean-Christophe PLAGNIOL-VILLARD | f363c40 | 2012-02-13 12:58:53 +0800 | [diff] [blame] | 30 | #include <mach/at91_ramc.h> |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 31 | |
| 32 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 33 | /* |
| 34 | * A0..A10 work in each range; A23 indicates I/O space; A25 is CFRNW; |
| 35 | * some other bit in {A24,A22..A11} is nREG to flag memory access |
| 36 | * (vs attributes). So more than 2KB/region would just be waste. |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 37 | * Note: These are offsets from the physical base address. |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 38 | */ |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 39 | #define CF_ATTR_PHYS (0) |
| 40 | #define CF_IO_PHYS (1 << 23) |
| 41 | #define CF_MEM_PHYS (0x017ff800) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 42 | |
| 43 | /*--------------------------------------------------------------------------*/ |
| 44 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 45 | struct at91_cf_socket { |
| 46 | struct pcmcia_socket socket; |
| 47 | |
| 48 | unsigned present:1; |
| 49 | |
| 50 | struct platform_device *pdev; |
| 51 | struct at91_cf_data *board; |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 52 | |
| 53 | unsigned long phys_baseaddr; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 54 | }; |
| 55 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 56 | static inline int at91_cf_present(struct at91_cf_socket *cf) |
| 57 | { |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 58 | return !gpio_get_value(cf->board->det_pin); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | /*--------------------------------------------------------------------------*/ |
| 62 | |
| 63 | static int at91_cf_ss_init(struct pcmcia_socket *s) |
| 64 | { |
| 65 | return 0; |
| 66 | } |
| 67 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 68 | static irqreturn_t at91_cf_irq(int irq, void *_cf) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 69 | { |
Jeff Garzik | c7bec5a | 2006-10-06 15:00:58 -0400 | [diff] [blame] | 70 | struct at91_cf_socket *cf = _cf; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 71 | |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 72 | if (irq == gpio_to_irq(cf->board->det_pin)) { |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 73 | unsigned present = at91_cf_present(cf); |
| 74 | |
| 75 | /* kick pccard as needed */ |
| 76 | if (present != cf->present) { |
| 77 | cf->present = present; |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 78 | dev_dbg(&cf->pdev->dev, "card %s\n", |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 79 | present ? "present" : "gone"); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 80 | pcmcia_parse_events(&cf->socket, SS_DETECT); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | return IRQ_HANDLED; |
| 85 | } |
| 86 | |
| 87 | static int at91_cf_get_status(struct pcmcia_socket *s, u_int *sp) |
| 88 | { |
| 89 | struct at91_cf_socket *cf; |
| 90 | |
| 91 | if (!sp) |
| 92 | return -EINVAL; |
| 93 | |
| 94 | cf = container_of(s, struct at91_cf_socket, socket); |
| 95 | |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 96 | /* NOTE: CF is always 3VCARD */ |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 97 | if (at91_cf_present(cf)) { |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 98 | int rdy = gpio_is_valid(cf->board->irq_pin); /* RDY/nIRQ */ |
| 99 | int vcc = gpio_is_valid(cf->board->vcc_pin); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 100 | |
| 101 | *sp = SS_DETECT | SS_3VCARD; |
Joachim Eastwood | e39506b | 2013-06-06 10:24:14 +0200 | [diff] [blame] | 102 | if (!rdy || gpio_get_value(cf->board->irq_pin)) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 103 | *sp |= SS_READY; |
Joachim Eastwood | e39506b | 2013-06-06 10:24:14 +0200 | [diff] [blame] | 104 | if (!vcc || gpio_get_value(cf->board->vcc_pin)) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 105 | *sp |= SS_POWERON; |
| 106 | } else |
| 107 | *sp = 0; |
| 108 | |
| 109 | return 0; |
| 110 | } |
| 111 | |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 112 | static int |
| 113 | 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] | 114 | { |
| 115 | struct at91_cf_socket *cf; |
| 116 | |
| 117 | cf = container_of(sock, struct at91_cf_socket, socket); |
| 118 | |
| 119 | /* switch Vcc if needed and possible */ |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 120 | if (gpio_is_valid(cf->board->vcc_pin)) { |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 121 | switch (s->Vcc) { |
Laurent Navet | d652f70 | 2013-06-06 10:24:20 +0200 | [diff] [blame] | 122 | case 0: |
| 123 | gpio_set_value(cf->board->vcc_pin, 0); |
| 124 | break; |
| 125 | case 33: |
| 126 | gpio_set_value(cf->board->vcc_pin, 1); |
| 127 | break; |
| 128 | default: |
| 129 | return -EINVAL; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 130 | } |
| 131 | } |
| 132 | |
| 133 | /* toggle reset if needed */ |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 134 | gpio_set_value(cf->board->rst_pin, s->flags & SS_RESET); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 135 | |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 136 | dev_dbg(&cf->pdev->dev, "Vcc %d, io_irq %d, flags %04x csc %04x\n", |
| 137 | s->Vcc, s->io_irq, s->flags, s->csc_mask); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 138 | |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | static int at91_cf_ss_suspend(struct pcmcia_socket *s) |
| 143 | { |
| 144 | return at91_cf_set_socket(s, &dead_socket); |
| 145 | } |
| 146 | |
| 147 | /* we already mapped the I/O region */ |
| 148 | static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io) |
| 149 | { |
| 150 | struct at91_cf_socket *cf; |
| 151 | u32 csr; |
| 152 | |
| 153 | cf = container_of(s, struct at91_cf_socket, socket); |
| 154 | io->flags &= (MAP_ACTIVE | MAP_16BIT | MAP_AUTOSZ); |
| 155 | |
| 156 | /* |
| 157 | * 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] | 158 | */ |
Jean-Christophe PLAGNIOL-VILLARD | f363c40 | 2012-02-13 12:58:53 +0800 | [diff] [blame] | 159 | 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] | 160 | |
| 161 | /* |
| 162 | * NOTE: this CF controller ignores IOIS16, so we can't really do |
| 163 | * MAP_AUTOSZ. The 16bit mode allows single byte access on either |
| 164 | * D0-D7 (even addr) or D8-D15 (odd), so it's close enough for many |
| 165 | * purposes (and handles ide-cs). |
| 166 | * |
| 167 | * The 8bit mode is needed for odd byte access on D0-D7. It seems |
| 168 | * some cards only like that way to get at the odd byte, despite |
| 169 | * CF 3.0 spec table 35 also giving the D8-D15 option. |
| 170 | */ |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 171 | if (!(io->flags & (MAP_16BIT | MAP_AUTOSZ))) { |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 172 | csr |= AT91_SMC_DBW_8; |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 173 | dev_dbg(&cf->pdev->dev, "8bit i/o bus\n"); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 174 | } else { |
| 175 | csr |= AT91_SMC_DBW_16; |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 176 | dev_dbg(&cf->pdev->dev, "16bit i/o bus\n"); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 177 | } |
Jean-Christophe PLAGNIOL-VILLARD | f363c40 | 2012-02-13 12:58:53 +0800 | [diff] [blame] | 178 | at91_ramc_write(0, AT91_SMC_CSR(cf->board->chipselect), csr); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 179 | |
| 180 | io->start = cf->socket.io_offset; |
| 181 | io->stop = io->start + SZ_2K - 1; |
| 182 | |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | /* pcmcia layer maps/unmaps mem regions */ |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 187 | static int |
| 188 | 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] | 189 | { |
| 190 | struct at91_cf_socket *cf; |
| 191 | |
| 192 | if (map->card_start) |
| 193 | return -EINVAL; |
| 194 | |
| 195 | cf = container_of(s, struct at91_cf_socket, socket); |
| 196 | |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 197 | map->flags &= (MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 198 | if (map->flags & MAP_ATTRIB) |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 199 | map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 200 | else |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 201 | map->static_start = cf->phys_baseaddr + CF_MEM_PHYS; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 202 | |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | static struct pccard_operations at91_cf_ops = { |
| 207 | .init = at91_cf_ss_init, |
| 208 | .suspend = at91_cf_ss_suspend, |
| 209 | .get_status = at91_cf_get_status, |
| 210 | .set_socket = at91_cf_set_socket, |
| 211 | .set_io_map = at91_cf_set_io_map, |
| 212 | .set_mem_map = at91_cf_set_mem_map, |
| 213 | }; |
| 214 | |
| 215 | /*--------------------------------------------------------------------------*/ |
| 216 | |
Joachim Eastwood | ed9084e | 2013-06-06 10:24:18 +0200 | [diff] [blame] | 217 | #if defined(CONFIG_OF) |
| 218 | static const struct of_device_id at91_cf_dt_ids[] = { |
| 219 | { .compatible = "atmel,at91rm9200-cf" }, |
| 220 | { /* sentinel */ } |
| 221 | }; |
| 222 | MODULE_DEVICE_TABLE(of, at91_cf_dt_ids); |
| 223 | |
| 224 | static int at91_cf_dt_init(struct platform_device *pdev) |
| 225 | { |
| 226 | struct at91_cf_data *board; |
| 227 | |
| 228 | board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL); |
| 229 | if (!board) |
| 230 | return -ENOMEM; |
| 231 | |
| 232 | board->irq_pin = of_get_gpio(pdev->dev.of_node, 0); |
| 233 | board->det_pin = of_get_gpio(pdev->dev.of_node, 1); |
| 234 | board->vcc_pin = of_get_gpio(pdev->dev.of_node, 2); |
| 235 | board->rst_pin = of_get_gpio(pdev->dev.of_node, 3); |
| 236 | |
| 237 | pdev->dev.platform_data = board; |
| 238 | |
| 239 | return 0; |
| 240 | } |
| 241 | #else |
| 242 | static int at91_cf_dt_init(struct platform_device *pdev) |
| 243 | { |
| 244 | return -ENODEV; |
| 245 | } |
| 246 | #endif |
| 247 | |
Johan Hovold | 16a7c7c | 2013-09-23 16:27:29 +0200 | [diff] [blame] | 248 | static int at91_cf_probe(struct platform_device *pdev) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 249 | { |
| 250 | struct at91_cf_socket *cf; |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 251 | struct at91_cf_data *board = pdev->dev.platform_data; |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 252 | struct resource *io; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 253 | int status; |
| 254 | |
Joachim Eastwood | ed9084e | 2013-06-06 10:24:18 +0200 | [diff] [blame] | 255 | if (!board) { |
| 256 | status = at91_cf_dt_init(pdev); |
| 257 | if (status) |
| 258 | return status; |
| 259 | |
| 260 | board = pdev->dev.platform_data; |
| 261 | } |
| 262 | |
| 263 | if (!gpio_is_valid(board->det_pin) || !gpio_is_valid(board->rst_pin)) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 264 | return -ENODEV; |
| 265 | |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 266 | io = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 267 | if (!io) |
| 268 | return -ENODEV; |
| 269 | |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 270 | cf = devm_kzalloc(&pdev->dev, sizeof(*cf), GFP_KERNEL); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 271 | if (!cf) |
| 272 | return -ENOMEM; |
| 273 | |
| 274 | cf->board = board; |
| 275 | cf->pdev = pdev; |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 276 | cf->phys_baseaddr = io->start; |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 277 | platform_set_drvdata(pdev, cf); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 278 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 279 | /* must be a GPIO; ergo must trigger on both edges */ |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 280 | status = devm_gpio_request(&pdev->dev, board->det_pin, "cf_det"); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 281 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 282 | return status; |
| 283 | |
| 284 | status = devm_request_irq(&pdev->dev, gpio_to_irq(board->det_pin), |
| 285 | at91_cf_irq, 0, "at91_cf detect", cf); |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 286 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 287 | return status; |
| 288 | |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 289 | device_init_wakeup(&pdev->dev, 1); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 290 | |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 291 | status = devm_gpio_request(&pdev->dev, board->rst_pin, "cf_rst"); |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 292 | if (status < 0) |
| 293 | goto fail0a; |
| 294 | |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 295 | if (gpio_is_valid(board->vcc_pin)) { |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 296 | status = devm_gpio_request(&pdev->dev, board->vcc_pin, "cf_vcc"); |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 297 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 298 | goto fail0a; |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 299 | } |
| 300 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 301 | /* |
| 302 | * The card driver will request this irq later as needed. |
| 303 | * but it causes lots of "irqNN: nobody cared" messages |
| 304 | * unless we report that we handle everything (sigh). |
| 305 | * (Note: DK board doesn't wire the IRQ pin...) |
| 306 | */ |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 307 | if (gpio_is_valid(board->irq_pin)) { |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 308 | status = devm_gpio_request(&pdev->dev, board->irq_pin, "cf_irq"); |
David Brownell | 4c1fc44 | 2008-02-04 22:27:42 -0800 | [diff] [blame] | 309 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 310 | goto fail0a; |
| 311 | |
| 312 | status = devm_request_irq(&pdev->dev, gpio_to_irq(board->irq_pin), |
| 313 | at91_cf_irq, IRQF_SHARED, "at91_cf", cf); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 314 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 315 | goto fail0a; |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 316 | cf->socket.pci_irq = gpio_to_irq(board->irq_pin); |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 317 | } else |
Yinghai Lu | 9130add | 2008-08-19 20:49:52 -0700 | [diff] [blame] | 318 | cf->socket.pci_irq = nr_irqs + 1; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 319 | |
Arnd Bergmann | 1be27c6 | 2015-03-12 15:54:23 +0100 | [diff] [blame^] | 320 | /* |
| 321 | * pcmcia layer only remaps "real" memory not iospace |
| 322 | * io_offset is set to 0x10000 to avoid the check in static_find_io(). |
| 323 | * */ |
| 324 | cf->socket.io_offset = 0x10000; |
| 325 | status = pci_ioremap_io(0x10000, cf->phys_baseaddr + CF_IO_PHYS); |
| 326 | if (status) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 327 | goto fail0a; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 328 | |
Andrew Victor | 40a0017 | 2006-12-04 12:26:36 +0200 | [diff] [blame] | 329 | /* reserve chip-select regions */ |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 330 | 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] | 331 | status = -ENXIO; |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 332 | goto fail0a; |
Andrew Victor | ebe5cfb | 2006-11-06 15:56:07 +0200 | [diff] [blame] | 333 | } |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 334 | |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 335 | dev_info(&pdev->dev, "irqs det #%d, io #%d\n", |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 336 | gpio_to_irq(board->det_pin), gpio_to_irq(board->irq_pin)); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 337 | |
| 338 | cf->socket.owner = THIS_MODULE; |
Alexey Dobriyan | e4a3c3f | 2007-02-13 22:39:27 -0800 | [diff] [blame] | 339 | cf->socket.dev.parent = &pdev->dev; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 340 | cf->socket.ops = &at91_cf_ops; |
| 341 | cf->socket.resource_ops = &pccard_static_ops; |
| 342 | cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP |
| 343 | | SS_CAP_MEM_ALIGN; |
| 344 | cf->socket.map_size = SZ_2K; |
David Brownell | 2c53620 | 2006-04-14 18:05:38 -0700 | [diff] [blame] | 345 | cf->socket.io[0].res = io; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 346 | |
| 347 | status = pcmcia_register_socket(&cf->socket); |
| 348 | if (status < 0) |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 349 | goto fail0a; |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 350 | |
| 351 | return 0; |
| 352 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 353 | fail0a: |
David Brownell | 1fbece1 | 2006-07-01 13:39:55 -0700 | [diff] [blame] | 354 | device_init_wakeup(&pdev->dev, 0); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 355 | return status; |
| 356 | } |
| 357 | |
Johan Hovold | 16a7c7c | 2013-09-23 16:27:29 +0200 | [diff] [blame] | 358 | static int at91_cf_remove(struct platform_device *pdev) |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 359 | { |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 360 | struct at91_cf_socket *cf = platform_get_drvdata(pdev); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 361 | |
| 362 | pcmcia_unregister_socket(&cf->socket); |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 363 | device_init_wakeup(&pdev->dev, 0); |
Joachim Eastwood | 54fe159 | 2013-06-06 10:24:16 +0200 | [diff] [blame] | 364 | |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 365 | return 0; |
| 366 | } |
| 367 | |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 368 | #ifdef CONFIG_PM |
| 369 | |
| 370 | static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg) |
| 371 | { |
| 372 | struct at91_cf_socket *cf = platform_get_drvdata(pdev); |
| 373 | struct at91_cf_data *board = cf->board; |
| 374 | |
David Brownell | 1fbece1 | 2006-07-01 13:39:55 -0700 | [diff] [blame] | 375 | if (device_may_wakeup(&pdev->dev)) { |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 376 | enable_irq_wake(gpio_to_irq(board->det_pin)); |
| 377 | if (gpio_is_valid(board->irq_pin)) |
| 378 | enable_irq_wake(gpio_to_irq(board->irq_pin)); |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 379 | } |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | static int at91_cf_resume(struct platform_device *pdev) |
| 384 | { |
Marc Pignat | 9af2037 | 2007-05-31 00:40:44 -0700 | [diff] [blame] | 385 | struct at91_cf_socket *cf = platform_get_drvdata(pdev); |
| 386 | struct at91_cf_data *board = cf->board; |
| 387 | |
| 388 | if (device_may_wakeup(&pdev->dev)) { |
Joachim Eastwood | 80af9e6 | 2012-01-10 02:37:25 +0100 | [diff] [blame] | 389 | disable_irq_wake(gpio_to_irq(board->det_pin)); |
| 390 | if (gpio_is_valid(board->irq_pin)) |
| 391 | disable_irq_wake(gpio_to_irq(board->irq_pin)); |
Marc Pignat | 9af2037 | 2007-05-31 00:40:44 -0700 | [diff] [blame] | 392 | } |
| 393 | |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | #else |
| 398 | #define at91_cf_suspend NULL |
| 399 | #define at91_cf_resume NULL |
| 400 | #endif |
| 401 | |
| 402 | static struct platform_driver at91_cf_driver = { |
| 403 | .driver = { |
Joachim Eastwood | 40ca020 | 2013-06-06 10:24:15 +0200 | [diff] [blame] | 404 | .name = "at91_cf", |
Joachim Eastwood | ed9084e | 2013-06-06 10:24:18 +0200 | [diff] [blame] | 405 | .of_match_table = of_match_ptr(at91_cf_dt_ids), |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 406 | }, |
Johan Hovold | 16a7c7c | 2013-09-23 16:27:29 +0200 | [diff] [blame] | 407 | .probe = at91_cf_probe, |
| 408 | .remove = at91_cf_remove, |
David Brownell | 0db6095 | 2006-04-19 06:37:48 -0700 | [diff] [blame] | 409 | .suspend = at91_cf_suspend, |
| 410 | .resume = at91_cf_resume, |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 411 | }; |
| 412 | |
Johan Hovold | 16a7c7c | 2013-09-23 16:27:29 +0200 | [diff] [blame] | 413 | module_platform_driver(at91_cf_driver); |
Andrew Victor | 2c1f3b7 | 2006-02-21 12:56:52 +0200 | [diff] [blame] | 414 | |
| 415 | MODULE_DESCRIPTION("AT91 Compact Flash Driver"); |
| 416 | MODULE_AUTHOR("David Brownell"); |
| 417 | MODULE_LICENSE("GPL"); |
Kay Sievers | 12c2c01 | 2008-04-15 14:34:34 -0700 | [diff] [blame] | 418 | MODULE_ALIAS("platform:at91_cf"); |