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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>
14#include <linux/platform_device.h>
15#include <linux/errno.h>
16#include <linux/init.h>
17#include <linux/interrupt.h>
18#include <linux/slab.h>
19
20#include <pcmcia/ss.h>
21
22#include <mach/hardware.h>
23#include <asm/io.h>
24#include <asm/sizes.h>
25#include <asm/gpio.h>
26
27#include <mach/board.h>
28#include <mach/at91rm9200_mc.h>
29
30
31/*
32 * A0..A10 work in each range; A23 indicates I/O space; A25 is CFRNW;
33 * some other bit in {A24,A22..A11} is nREG to flag memory access
34 * (vs attributes). So more than 2KB/region would just be waste.
35 * Note: These are offsets from the physical base address.
36 */
37#define CF_ATTR_PHYS (0)
38#define CF_IO_PHYS (1 << 23)
39#define CF_MEM_PHYS (0x017ff800)
40
41/*--------------------------------------------------------------------------*/
42
43static const char driver_name[] = "at91_cf";
44
45struct 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;
52
53 unsigned long phys_baseaddr;
54};
55
56static inline int at91_cf_present(struct at91_cf_socket *cf)
57{
58 return !gpio_get_value(cf->board->det_pin);
59}
60
61/*--------------------------------------------------------------------------*/
62
63static int at91_cf_ss_init(struct pcmcia_socket *s)
64{
65 return 0;
66}
67
68static irqreturn_t at91_cf_irq(int irq, void *_cf)
69{
70 struct at91_cf_socket *cf = _cf;
71
72 if (irq == cf->board->det_pin) {
73 unsigned present = at91_cf_present(cf);
74
75 /* kick pccard as needed */
76 if (present != cf->present) {
77 cf->present = present;
78 pr_debug("%s: card %s\n", driver_name,
79 present ? "present" : "gone");
80 pcmcia_parse_events(&cf->socket, SS_DETECT);
81 }
82 }
83
84 return IRQ_HANDLED;
85}
86
87static 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
96 /* NOTE: CF is always 3VCARD */
97 if (at91_cf_present(cf)) {
98 int rdy = cf->board->irq_pin; /* RDY/nIRQ */
99 int vcc = cf->board->vcc_pin;
100
101 *sp = SS_DETECT | SS_3VCARD;
102 if (!rdy || gpio_get_value(rdy))
103 *sp |= SS_READY;
104 if (!vcc || gpio_get_value(vcc))
105 *sp |= SS_POWERON;
106 } else
107 *sp = 0;
108
109 return 0;
110}
111
112static int
113at91_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s)
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 */
120 if (cf->board->vcc_pin) {
121 switch (s->Vcc) {
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;
130 }
131 }
132
133 /* toggle reset if needed */
134 gpio_set_value(cf->board->rst_pin, s->flags & SS_RESET);
135
136 pr_debug("%s: Vcc %d, io_irq %d, flags %04x csc %04x\n",
137 driver_name, s->Vcc, s->io_irq, s->flags, s->csc_mask);
138
139 return 0;
140}
141
142static 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 */
148static 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.
158 */
159 csr = at91_sys_read(AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW;
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 */
171 if (!(io->flags & (MAP_16BIT | MAP_AUTOSZ))) {
172 csr |= AT91_SMC_DBW_8;
173 pr_debug("%s: 8bit i/o bus\n", driver_name);
174 } else {
175 csr |= AT91_SMC_DBW_16;
176 pr_debug("%s: 16bit i/o bus\n", driver_name);
177 }
178 at91_sys_write(AT91_SMC_CSR(cf->board->chipselect), csr);
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 */
187static int
188at91_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map)
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
197 map->flags &= (MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT);
198 if (map->flags & MAP_ATTRIB)
199 map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS;
200 else
201 map->static_start = cf->phys_baseaddr + CF_MEM_PHYS;
202
203 return 0;
204}
205
206static 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
217static int __init at91_cf_probe(struct platform_device *pdev)
218{
219 struct at91_cf_socket *cf;
220 struct at91_cf_data *board = pdev->dev.platform_data;
221 struct resource *io;
222 int status;
223
224 if (!board || !board->det_pin || !board->rst_pin)
225 return -ENODEV;
226
227 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
228 if (!io)
229 return -ENODEV;
230
231 cf = kzalloc(sizeof *cf, GFP_KERNEL);
232 if (!cf)
233 return -ENOMEM;
234
235 cf->board = board;
236 cf->pdev = pdev;
237 cf->phys_baseaddr = io->start;
238 platform_set_drvdata(pdev, cf);
239
240 /* must be a GPIO; ergo must trigger on both edges */
241 status = gpio_request(board->det_pin, "cf_det");
242 if (status < 0)
243 goto fail0;
244 status = request_irq(board->det_pin, at91_cf_irq, 0, driver_name, cf);
245 if (status < 0)
246 goto fail00;
247 device_init_wakeup(&pdev->dev, 1);
248
249 status = gpio_request(board->rst_pin, "cf_rst");
250 if (status < 0)
251 goto fail0a;
252
253 if (board->vcc_pin) {
254 status = gpio_request(board->vcc_pin, "cf_vcc");
255 if (status < 0)
256 goto fail0b;
257 }
258
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 */
265 if (board->irq_pin) {
266 status = gpio_request(board->irq_pin, "cf_irq");
267 if (status < 0)
268 goto fail0c;
269 status = request_irq(board->irq_pin, at91_cf_irq,
270 IRQF_SHARED, driver_name, cf);
271 if (status < 0)
272 goto fail0d;
273 cf->socket.pci_irq = board->irq_pin;
274 } else
275 cf->socket.pci_irq = nr_irqs + 1;
276
277 /* pcmcia layer only remaps "real" memory not iospace */
278 cf->socket.io_offset = (unsigned long)
279 ioremap(cf->phys_baseaddr + CF_IO_PHYS, SZ_2K);
280 if (!cf->socket.io_offset) {
281 status = -ENXIO;
282 goto fail1;
283 }
284
285 /* reserve chip-select regions */
286 if (!request_mem_region(io->start, resource_size(io), driver_name)) {
287 status = -ENXIO;
288 goto fail1;
289 }
290
291 pr_info("%s: irqs det #%d, io #%d\n", driver_name,
292 board->det_pin, board->irq_pin);
293
294 cf->socket.owner = THIS_MODULE;
295 cf->socket.dev.parent = &pdev->dev;
296 cf->socket.ops = &at91_cf_ops;
297 cf->socket.resource_ops = &pccard_static_ops;
298 cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP
299 | SS_CAP_MEM_ALIGN;
300 cf->socket.map_size = SZ_2K;
301 cf->socket.io[0].res = io;
302
303 status = pcmcia_register_socket(&cf->socket);
304 if (status < 0)
305 goto fail2;
306
307 return 0;
308
309fail2:
310 release_mem_region(io->start, resource_size(io));
311fail1:
312 if (cf->socket.io_offset)
313 iounmap((void __iomem *) cf->socket.io_offset);
314 if (board->irq_pin) {
315 free_irq(board->irq_pin, cf);
316fail0d:
317 gpio_free(board->irq_pin);
318 }
319fail0c:
320 if (board->vcc_pin)
321 gpio_free(board->vcc_pin);
322fail0b:
323 gpio_free(board->rst_pin);
324fail0a:
325 device_init_wakeup(&pdev->dev, 0);
326 free_irq(board->det_pin, cf);
327fail00:
328 gpio_free(board->det_pin);
329fail0:
330 kfree(cf);
331 return status;
332}
333
334static int __exit at91_cf_remove(struct platform_device *pdev)
335{
336 struct at91_cf_socket *cf = platform_get_drvdata(pdev);
337 struct at91_cf_data *board = cf->board;
338 struct resource *io = cf->socket.io[0].res;
339
340 pcmcia_unregister_socket(&cf->socket);
341 release_mem_region(io->start, resource_size(io));
342 iounmap((void __iomem *) cf->socket.io_offset);
343 if (board->irq_pin) {
344 free_irq(board->irq_pin, cf);
345 gpio_free(board->irq_pin);
346 }
347 if (board->vcc_pin)
348 gpio_free(board->vcc_pin);
349 gpio_free(board->rst_pin);
350 device_init_wakeup(&pdev->dev, 0);
351 free_irq(board->det_pin, cf);
352 gpio_free(board->det_pin);
353 kfree(cf);
354 return 0;
355}
356
357#ifdef CONFIG_PM
358
359static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
360{
361 struct at91_cf_socket *cf = platform_get_drvdata(pdev);
362 struct at91_cf_data *board = cf->board;
363
364 if (device_may_wakeup(&pdev->dev)) {
365 enable_irq_wake(board->det_pin);
366 if (board->irq_pin)
367 enable_irq_wake(board->irq_pin);
368 }
369 return 0;
370}
371
372static int at91_cf_resume(struct platform_device *pdev)
373{
374 struct at91_cf_socket *cf = platform_get_drvdata(pdev);
375 struct at91_cf_data *board = cf->board;
376
377 if (device_may_wakeup(&pdev->dev)) {
378 disable_irq_wake(board->det_pin);
379 if (board->irq_pin)
380 disable_irq_wake(board->irq_pin);
381 }
382
383 return 0;
384}
385
386#else
387#define at91_cf_suspend NULL
388#define at91_cf_resume NULL
389#endif
390
391static struct platform_driver at91_cf_driver = {
392 .driver = {
393 .name = (char *) driver_name,
394 .owner = THIS_MODULE,
395 },
396 .remove = __exit_p(at91_cf_remove),
397 .suspend = at91_cf_suspend,
398 .resume = at91_cf_resume,
399};
400
401/*--------------------------------------------------------------------------*/
402
403static int __init at91_cf_init(void)
404{
405 return platform_driver_probe(&at91_cf_driver, at91_cf_probe);
406}
407module_init(at91_cf_init);
408
409static void __exit at91_cf_exit(void)
410{
411 platform_driver_unregister(&at91_cf_driver);
412}
413module_exit(at91_cf_exit);
414
415MODULE_DESCRIPTION("AT91 Compact Flash Driver");
416MODULE_AUTHOR("David Brownell");
417MODULE_LICENSE("GPL");
418MODULE_ALIAS("platform:at91_cf");
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>
14#include <linux/platform_device.h>
15#include <linux/errno.h>
16#include <linux/init.h>
17#include <linux/interrupt.h>
18#include <linux/slab.h>
19#include <linux/gpio.h>
20#include <linux/platform_data/atmel.h>
21#include <linux/io.h>
22#include <linux/sizes.h>
23#include <linux/mfd/syscon.h>
24#include <linux/mfd/syscon/atmel-mc.h>
25#include <linux/of.h>
26#include <linux/of_device.h>
27#include <linux/of_gpio.h>
28#include <linux/regmap.h>
29
30#include <pcmcia/ss.h>
31
32/*
33 * A0..A10 work in each range; A23 indicates I/O space; A25 is CFRNW;
34 * some other bit in {A24,A22..A11} is nREG to flag memory access
35 * (vs attributes). So more than 2KB/region would just be waste.
36 * Note: These are offsets from the physical base address.
37 */
38#define CF_ATTR_PHYS (0)
39#define CF_IO_PHYS (1 << 23)
40#define CF_MEM_PHYS (0x017ff800)
41
42struct regmap *mc;
43
44/*--------------------------------------------------------------------------*/
45
46struct at91_cf_socket {
47 struct pcmcia_socket socket;
48
49 unsigned present:1;
50
51 struct platform_device *pdev;
52 struct at91_cf_data *board;
53
54 unsigned long phys_baseaddr;
55};
56
57static inline int at91_cf_present(struct at91_cf_socket *cf)
58{
59 return !gpio_get_value(cf->board->det_pin);
60}
61
62/*--------------------------------------------------------------------------*/
63
64static int at91_cf_ss_init(struct pcmcia_socket *s)
65{
66 return 0;
67}
68
69static irqreturn_t at91_cf_irq(int irq, void *_cf)
70{
71 struct at91_cf_socket *cf = _cf;
72
73 if (irq == gpio_to_irq(cf->board->det_pin)) {
74 unsigned present = at91_cf_present(cf);
75
76 /* kick pccard as needed */
77 if (present != cf->present) {
78 cf->present = present;
79 dev_dbg(&cf->pdev->dev, "card %s\n",
80 present ? "present" : "gone");
81 pcmcia_parse_events(&cf->socket, SS_DETECT);
82 }
83 }
84
85 return IRQ_HANDLED;
86}
87
88static int at91_cf_get_status(struct pcmcia_socket *s, u_int *sp)
89{
90 struct at91_cf_socket *cf;
91
92 if (!sp)
93 return -EINVAL;
94
95 cf = container_of(s, struct at91_cf_socket, socket);
96
97 /* NOTE: CF is always 3VCARD */
98 if (at91_cf_present(cf)) {
99 int rdy = gpio_is_valid(cf->board->irq_pin); /* RDY/nIRQ */
100 int vcc = gpio_is_valid(cf->board->vcc_pin);
101
102 *sp = SS_DETECT | SS_3VCARD;
103 if (!rdy || gpio_get_value(cf->board->irq_pin))
104 *sp |= SS_READY;
105 if (!vcc || gpio_get_value(cf->board->vcc_pin))
106 *sp |= SS_POWERON;
107 } else
108 *sp = 0;
109
110 return 0;
111}
112
113static int
114at91_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s)
115{
116 struct at91_cf_socket *cf;
117
118 cf = container_of(sock, struct at91_cf_socket, socket);
119
120 /* switch Vcc if needed and possible */
121 if (gpio_is_valid(cf->board->vcc_pin)) {
122 switch (s->Vcc) {
123 case 0:
124 gpio_set_value(cf->board->vcc_pin, 0);
125 break;
126 case 33:
127 gpio_set_value(cf->board->vcc_pin, 1);
128 break;
129 default:
130 return -EINVAL;
131 }
132 }
133
134 /* toggle reset if needed */
135 gpio_set_value(cf->board->rst_pin, s->flags & SS_RESET);
136
137 dev_dbg(&cf->pdev->dev, "Vcc %d, io_irq %d, flags %04x csc %04x\n",
138 s->Vcc, s->io_irq, s->flags, s->csc_mask);
139
140 return 0;
141}
142
143static int at91_cf_ss_suspend(struct pcmcia_socket *s)
144{
145 return at91_cf_set_socket(s, &dead_socket);
146}
147
148/* we already mapped the I/O region */
149static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
150{
151 struct at91_cf_socket *cf;
152 u32 csr;
153
154 cf = container_of(s, struct at91_cf_socket, socket);
155 io->flags &= (MAP_ACTIVE | MAP_16BIT | MAP_AUTOSZ);
156
157 /*
158 * Use 16 bit accesses unless/until we need 8-bit i/o space.
159 *
160 * NOTE: this CF controller ignores IOIS16, so we can't really do
161 * MAP_AUTOSZ. The 16bit mode allows single byte access on either
162 * D0-D7 (even addr) or D8-D15 (odd), so it's close enough for many
163 * purposes (and handles ide-cs).
164 *
165 * The 8bit mode is needed for odd byte access on D0-D7. It seems
166 * some cards only like that way to get at the odd byte, despite
167 * CF 3.0 spec table 35 also giving the D8-D15 option.
168 */
169 if (!(io->flags & (MAP_16BIT | MAP_AUTOSZ))) {
170 csr = AT91_MC_SMC_DBW_8;
171 dev_dbg(&cf->pdev->dev, "8bit i/o bus\n");
172 } else {
173 csr = AT91_MC_SMC_DBW_16;
174 dev_dbg(&cf->pdev->dev, "16bit i/o bus\n");
175 }
176 regmap_update_bits(mc, AT91_MC_SMC_CSR(cf->board->chipselect),
177 AT91_MC_SMC_DBW, csr);
178
179 io->start = cf->socket.io_offset;
180 io->stop = io->start + SZ_2K - 1;
181
182 return 0;
183}
184
185/* pcmcia layer maps/unmaps mem regions */
186static int
187at91_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map)
188{
189 struct at91_cf_socket *cf;
190
191 if (map->card_start)
192 return -EINVAL;
193
194 cf = container_of(s, struct at91_cf_socket, socket);
195
196 map->flags &= (MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT);
197 if (map->flags & MAP_ATTRIB)
198 map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS;
199 else
200 map->static_start = cf->phys_baseaddr + CF_MEM_PHYS;
201
202 return 0;
203}
204
205static struct pccard_operations at91_cf_ops = {
206 .init = at91_cf_ss_init,
207 .suspend = at91_cf_ss_suspend,
208 .get_status = at91_cf_get_status,
209 .set_socket = at91_cf_set_socket,
210 .set_io_map = at91_cf_set_io_map,
211 .set_mem_map = at91_cf_set_mem_map,
212};
213
214/*--------------------------------------------------------------------------*/
215
216#if defined(CONFIG_OF)
217static const struct of_device_id at91_cf_dt_ids[] = {
218 { .compatible = "atmel,at91rm9200-cf" },
219 { /* sentinel */ }
220};
221MODULE_DEVICE_TABLE(of, at91_cf_dt_ids);
222
223static int at91_cf_dt_init(struct platform_device *pdev)
224{
225 struct at91_cf_data *board;
226
227 board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
228 if (!board)
229 return -ENOMEM;
230
231 board->irq_pin = of_get_gpio(pdev->dev.of_node, 0);
232 board->det_pin = of_get_gpio(pdev->dev.of_node, 1);
233 board->vcc_pin = of_get_gpio(pdev->dev.of_node, 2);
234 board->rst_pin = of_get_gpio(pdev->dev.of_node, 3);
235
236 pdev->dev.platform_data = board;
237
238 mc = syscon_regmap_lookup_by_compatible("atmel,at91rm9200-sdramc");
239 if (IS_ERR(mc))
240 return PTR_ERR(mc);
241
242 return 0;
243}
244#else
245static int at91_cf_dt_init(struct platform_device *pdev)
246{
247 return -ENODEV;
248}
249#endif
250
251static int at91_cf_probe(struct platform_device *pdev)
252{
253 struct at91_cf_socket *cf;
254 struct at91_cf_data *board = pdev->dev.platform_data;
255 struct resource *io;
256 int status;
257
258 if (!board) {
259 status = at91_cf_dt_init(pdev);
260 if (status)
261 return status;
262
263 board = pdev->dev.platform_data;
264 }
265
266 if (!gpio_is_valid(board->det_pin) || !gpio_is_valid(board->rst_pin))
267 return -ENODEV;
268
269 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
270 if (!io)
271 return -ENODEV;
272
273 cf = devm_kzalloc(&pdev->dev, sizeof(*cf), GFP_KERNEL);
274 if (!cf)
275 return -ENOMEM;
276
277 cf->board = board;
278 cf->pdev = pdev;
279 cf->phys_baseaddr = io->start;
280 platform_set_drvdata(pdev, cf);
281
282 /* must be a GPIO; ergo must trigger on both edges */
283 status = devm_gpio_request(&pdev->dev, board->det_pin, "cf_det");
284 if (status < 0)
285 return status;
286
287 status = devm_request_irq(&pdev->dev, gpio_to_irq(board->det_pin),
288 at91_cf_irq, 0, "at91_cf detect", cf);
289 if (status < 0)
290 return status;
291
292 device_init_wakeup(&pdev->dev, 1);
293
294 status = devm_gpio_request(&pdev->dev, board->rst_pin, "cf_rst");
295 if (status < 0)
296 goto fail0a;
297
298 if (gpio_is_valid(board->vcc_pin)) {
299 status = devm_gpio_request(&pdev->dev, board->vcc_pin, "cf_vcc");
300 if (status < 0)
301 goto fail0a;
302 }
303
304 /*
305 * The card driver will request this irq later as needed.
306 * but it causes lots of "irqNN: nobody cared" messages
307 * unless we report that we handle everything (sigh).
308 * (Note: DK board doesn't wire the IRQ pin...)
309 */
310 if (gpio_is_valid(board->irq_pin)) {
311 status = devm_gpio_request(&pdev->dev, board->irq_pin, "cf_irq");
312 if (status < 0)
313 goto fail0a;
314
315 status = devm_request_irq(&pdev->dev, gpio_to_irq(board->irq_pin),
316 at91_cf_irq, IRQF_SHARED, "at91_cf", cf);
317 if (status < 0)
318 goto fail0a;
319 cf->socket.pci_irq = gpio_to_irq(board->irq_pin);
320 } else
321 cf->socket.pci_irq = nr_irqs + 1;
322
323 /*
324 * pcmcia layer only remaps "real" memory not iospace
325 * io_offset is set to 0x10000 to avoid the check in static_find_io().
326 * */
327 cf->socket.io_offset = 0x10000;
328 status = pci_ioremap_io(0x10000, cf->phys_baseaddr + CF_IO_PHYS);
329 if (status)
330 goto fail0a;
331
332 /* reserve chip-select regions */
333 if (!devm_request_mem_region(&pdev->dev, io->start, resource_size(io), "at91_cf")) {
334 status = -ENXIO;
335 goto fail0a;
336 }
337
338 dev_info(&pdev->dev, "irqs det #%d, io #%d\n",
339 gpio_to_irq(board->det_pin), gpio_to_irq(board->irq_pin));
340
341 cf->socket.owner = THIS_MODULE;
342 cf->socket.dev.parent = &pdev->dev;
343 cf->socket.ops = &at91_cf_ops;
344 cf->socket.resource_ops = &pccard_static_ops;
345 cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP
346 | SS_CAP_MEM_ALIGN;
347 cf->socket.map_size = SZ_2K;
348 cf->socket.io[0].res = io;
349
350 status = pcmcia_register_socket(&cf->socket);
351 if (status < 0)
352 goto fail0a;
353
354 return 0;
355
356fail0a:
357 device_init_wakeup(&pdev->dev, 0);
358 return status;
359}
360
361static int at91_cf_remove(struct platform_device *pdev)
362{
363 struct at91_cf_socket *cf = platform_get_drvdata(pdev);
364
365 pcmcia_unregister_socket(&cf->socket);
366 device_init_wakeup(&pdev->dev, 0);
367
368 return 0;
369}
370
371#ifdef CONFIG_PM
372
373static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
374{
375 struct at91_cf_socket *cf = platform_get_drvdata(pdev);
376 struct at91_cf_data *board = cf->board;
377
378 if (device_may_wakeup(&pdev->dev)) {
379 enable_irq_wake(gpio_to_irq(board->det_pin));
380 if (gpio_is_valid(board->irq_pin))
381 enable_irq_wake(gpio_to_irq(board->irq_pin));
382 }
383 return 0;
384}
385
386static int at91_cf_resume(struct platform_device *pdev)
387{
388 struct at91_cf_socket *cf = platform_get_drvdata(pdev);
389 struct at91_cf_data *board = cf->board;
390
391 if (device_may_wakeup(&pdev->dev)) {
392 disable_irq_wake(gpio_to_irq(board->det_pin));
393 if (gpio_is_valid(board->irq_pin))
394 disable_irq_wake(gpio_to_irq(board->irq_pin));
395 }
396
397 return 0;
398}
399
400#else
401#define at91_cf_suspend NULL
402#define at91_cf_resume NULL
403#endif
404
405static struct platform_driver at91_cf_driver = {
406 .driver = {
407 .name = "at91_cf",
408 .of_match_table = of_match_ptr(at91_cf_dt_ids),
409 },
410 .probe = at91_cf_probe,
411 .remove = at91_cf_remove,
412 .suspend = at91_cf_suspend,
413 .resume = at91_cf_resume,
414};
415
416module_platform_driver(at91_cf_driver);
417
418MODULE_DESCRIPTION("AT91 Compact Flash Driver");
419MODULE_AUTHOR("David Brownell");
420MODULE_LICENSE("GPL");
421MODULE_ALIAS("platform:at91_cf");