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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// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * at91_cf.c -- AT91 CompactFlash controller driver
4 *
5 * Copyright (C) 2005 David Brownell
6 */
7
8#include <linux/module.h>
9#include <linux/kernel.h>
10#include <linux/platform_device.h>
11#include <linux/errno.h>
12#include <linux/init.h>
13#include <linux/interrupt.h>
14#include <linux/slab.h>
15#include <linux/gpio.h>
16#include <linux/platform_data/atmel.h>
17#include <linux/io.h>
18#include <linux/sizes.h>
19#include <linux/mfd/syscon.h>
20#include <linux/mfd/syscon/atmel-mc.h>
21#include <linux/of.h>
22#include <linux/of_device.h>
23#include <linux/of_gpio.h>
24#include <linux/regmap.h>
25
26#include <pcmcia/ss.h>
27
28/*
29 * A0..A10 work in each range; A23 indicates I/O space; A25 is CFRNW;
30 * some other bit in {A24,A22..A11} is nREG to flag memory access
31 * (vs attributes). So more than 2KB/region would just be waste.
32 * Note: These are offsets from the physical base address.
33 */
34#define CF_ATTR_PHYS (0)
35#define CF_IO_PHYS (1 << 23)
36#define CF_MEM_PHYS (0x017ff800)
37
38struct regmap *mc;
39
40/*--------------------------------------------------------------------------*/
41
42struct 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;
49
50 unsigned long phys_baseaddr;
51};
52
53static inline int at91_cf_present(struct at91_cf_socket *cf)
54{
55 return !gpio_get_value(cf->board->det_pin);
56}
57
58/*--------------------------------------------------------------------------*/
59
60static int at91_cf_ss_init(struct pcmcia_socket *s)
61{
62 return 0;
63}
64
65static irqreturn_t at91_cf_irq(int irq, void *_cf)
66{
67 struct at91_cf_socket *cf = _cf;
68
69 if (irq == gpio_to_irq(cf->board->det_pin)) {
70 unsigned present = at91_cf_present(cf);
71
72 /* kick pccard as needed */
73 if (present != cf->present) {
74 cf->present = present;
75 dev_dbg(&cf->pdev->dev, "card %s\n",
76 present ? "present" : "gone");
77 pcmcia_parse_events(&cf->socket, SS_DETECT);
78 }
79 }
80
81 return IRQ_HANDLED;
82}
83
84static 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
93 /* NOTE: CF is always 3VCARD */
94 if (at91_cf_present(cf)) {
95 int rdy = gpio_is_valid(cf->board->irq_pin); /* RDY/nIRQ */
96 int vcc = gpio_is_valid(cf->board->vcc_pin);
97
98 *sp = SS_DETECT | SS_3VCARD;
99 if (!rdy || gpio_get_value(cf->board->irq_pin))
100 *sp |= SS_READY;
101 if (!vcc || gpio_get_value(cf->board->vcc_pin))
102 *sp |= SS_POWERON;
103 } else
104 *sp = 0;
105
106 return 0;
107}
108
109static int
110at91_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s)
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 */
117 if (gpio_is_valid(cf->board->vcc_pin)) {
118 switch (s->Vcc) {
119 case 0:
120 gpio_set_value(cf->board->vcc_pin, 0);
121 break;
122 case 33:
123 gpio_set_value(cf->board->vcc_pin, 1);
124 break;
125 default:
126 return -EINVAL;
127 }
128 }
129
130 /* toggle reset if needed */
131 gpio_set_value(cf->board->rst_pin, s->flags & SS_RESET);
132
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);
135
136 return 0;
137}
138
139static 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 */
145static 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.
155 *
156 * NOTE: this CF controller ignores IOIS16, so we can't really do
157 * MAP_AUTOSZ. The 16bit mode allows single byte access on either
158 * D0-D7 (even addr) or D8-D15 (odd), so it's close enough for many
159 * purposes (and handles ide-cs).
160 *
161 * The 8bit mode is needed for odd byte access on D0-D7. It seems
162 * some cards only like that way to get at the odd byte, despite
163 * CF 3.0 spec table 35 also giving the D8-D15 option.
164 */
165 if (!(io->flags & (MAP_16BIT | MAP_AUTOSZ))) {
166 csr = AT91_MC_SMC_DBW_8;
167 dev_dbg(&cf->pdev->dev, "8bit i/o bus\n");
168 } else {
169 csr = AT91_MC_SMC_DBW_16;
170 dev_dbg(&cf->pdev->dev, "16bit i/o bus\n");
171 }
172 regmap_update_bits(mc, AT91_MC_SMC_CSR(cf->board->chipselect),
173 AT91_MC_SMC_DBW, csr);
174
175 io->start = cf->socket.io_offset;
176 io->stop = io->start + SZ_2K - 1;
177
178 return 0;
179}
180
181/* pcmcia layer maps/unmaps mem regions */
182static int
183at91_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map)
184{
185 struct at91_cf_socket *cf;
186
187 if (map->card_start)
188 return -EINVAL;
189
190 cf = container_of(s, struct at91_cf_socket, socket);
191
192 map->flags &= (MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT);
193 if (map->flags & MAP_ATTRIB)
194 map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS;
195 else
196 map->static_start = cf->phys_baseaddr + CF_MEM_PHYS;
197
198 return 0;
199}
200
201static struct pccard_operations at91_cf_ops = {
202 .init = at91_cf_ss_init,
203 .suspend = at91_cf_ss_suspend,
204 .get_status = at91_cf_get_status,
205 .set_socket = at91_cf_set_socket,
206 .set_io_map = at91_cf_set_io_map,
207 .set_mem_map = at91_cf_set_mem_map,
208};
209
210/*--------------------------------------------------------------------------*/
211
212#if defined(CONFIG_OF)
213static const struct of_device_id at91_cf_dt_ids[] = {
214 { .compatible = "atmel,at91rm9200-cf" },
215 { /* sentinel */ }
216};
217MODULE_DEVICE_TABLE(of, at91_cf_dt_ids);
218
219static int at91_cf_dt_init(struct platform_device *pdev)
220{
221 struct at91_cf_data *board;
222
223 board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
224 if (!board)
225 return -ENOMEM;
226
227 board->irq_pin = of_get_gpio(pdev->dev.of_node, 0);
228 board->det_pin = of_get_gpio(pdev->dev.of_node, 1);
229 board->vcc_pin = of_get_gpio(pdev->dev.of_node, 2);
230 board->rst_pin = of_get_gpio(pdev->dev.of_node, 3);
231
232 pdev->dev.platform_data = board;
233
234 mc = syscon_regmap_lookup_by_compatible("atmel,at91rm9200-sdramc");
235
236 return PTR_ERR_OR_ZERO(mc);
237}
238#else
239static int at91_cf_dt_init(struct platform_device *pdev)
240{
241 return -ENODEV;
242}
243#endif
244
245static int at91_cf_probe(struct platform_device *pdev)
246{
247 struct at91_cf_socket *cf;
248 struct at91_cf_data *board = pdev->dev.platform_data;
249 struct resource *io;
250 int status;
251
252 if (!board) {
253 status = at91_cf_dt_init(pdev);
254 if (status)
255 return status;
256
257 board = pdev->dev.platform_data;
258 }
259
260 if (!gpio_is_valid(board->det_pin) || !gpio_is_valid(board->rst_pin))
261 return -ENODEV;
262
263 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
264 if (!io)
265 return -ENODEV;
266
267 cf = devm_kzalloc(&pdev->dev, sizeof(*cf), GFP_KERNEL);
268 if (!cf)
269 return -ENOMEM;
270
271 cf->board = board;
272 cf->pdev = pdev;
273 cf->phys_baseaddr = io->start;
274 platform_set_drvdata(pdev, cf);
275
276 /* must be a GPIO; ergo must trigger on both edges */
277 status = devm_gpio_request(&pdev->dev, board->det_pin, "cf_det");
278 if (status < 0)
279 return status;
280
281 status = devm_request_irq(&pdev->dev, gpio_to_irq(board->det_pin),
282 at91_cf_irq, 0, "at91_cf detect", cf);
283 if (status < 0)
284 return status;
285
286 device_init_wakeup(&pdev->dev, 1);
287
288 status = devm_gpio_request(&pdev->dev, board->rst_pin, "cf_rst");
289 if (status < 0)
290 goto fail0a;
291
292 if (gpio_is_valid(board->vcc_pin)) {
293 status = devm_gpio_request(&pdev->dev, board->vcc_pin, "cf_vcc");
294 if (status < 0)
295 goto fail0a;
296 }
297
298 /*
299 * The card driver will request this irq later as needed.
300 * but it causes lots of "irqNN: nobody cared" messages
301 * unless we report that we handle everything (sigh).
302 * (Note: DK board doesn't wire the IRQ pin...)
303 */
304 if (gpio_is_valid(board->irq_pin)) {
305 status = devm_gpio_request(&pdev->dev, board->irq_pin, "cf_irq");
306 if (status < 0)
307 goto fail0a;
308
309 status = devm_request_irq(&pdev->dev, gpio_to_irq(board->irq_pin),
310 at91_cf_irq, IRQF_SHARED, "at91_cf", cf);
311 if (status < 0)
312 goto fail0a;
313 cf->socket.pci_irq = gpio_to_irq(board->irq_pin);
314 } else
315 cf->socket.pci_irq = nr_irqs + 1;
316
317 /*
318 * pcmcia layer only remaps "real" memory not iospace
319 * io_offset is set to 0x10000 to avoid the check in static_find_io().
320 * */
321 cf->socket.io_offset = 0x10000;
322 status = pci_ioremap_io(0x10000, cf->phys_baseaddr + CF_IO_PHYS);
323 if (status)
324 goto fail0a;
325
326 /* reserve chip-select regions */
327 if (!devm_request_mem_region(&pdev->dev, io->start, resource_size(io), "at91_cf")) {
328 status = -ENXIO;
329 goto fail0a;
330 }
331
332 dev_info(&pdev->dev, "irqs det #%d, io #%d\n",
333 gpio_to_irq(board->det_pin), gpio_to_irq(board->irq_pin));
334
335 cf->socket.owner = THIS_MODULE;
336 cf->socket.dev.parent = &pdev->dev;
337 cf->socket.ops = &at91_cf_ops;
338 cf->socket.resource_ops = &pccard_static_ops;
339 cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP
340 | SS_CAP_MEM_ALIGN;
341 cf->socket.map_size = SZ_2K;
342 cf->socket.io[0].res = io;
343
344 status = pcmcia_register_socket(&cf->socket);
345 if (status < 0)
346 goto fail0a;
347
348 return 0;
349
350fail0a:
351 device_init_wakeup(&pdev->dev, 0);
352 return status;
353}
354
355static int at91_cf_remove(struct platform_device *pdev)
356{
357 struct at91_cf_socket *cf = platform_get_drvdata(pdev);
358
359 pcmcia_unregister_socket(&cf->socket);
360 device_init_wakeup(&pdev->dev, 0);
361
362 return 0;
363}
364
365#ifdef CONFIG_PM
366
367static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
368{
369 struct at91_cf_socket *cf = platform_get_drvdata(pdev);
370 struct at91_cf_data *board = cf->board;
371
372 if (device_may_wakeup(&pdev->dev)) {
373 enable_irq_wake(gpio_to_irq(board->det_pin));
374 if (gpio_is_valid(board->irq_pin))
375 enable_irq_wake(gpio_to_irq(board->irq_pin));
376 }
377 return 0;
378}
379
380static int at91_cf_resume(struct platform_device *pdev)
381{
382 struct at91_cf_socket *cf = platform_get_drvdata(pdev);
383 struct at91_cf_data *board = cf->board;
384
385 if (device_may_wakeup(&pdev->dev)) {
386 disable_irq_wake(gpio_to_irq(board->det_pin));
387 if (gpio_is_valid(board->irq_pin))
388 disable_irq_wake(gpio_to_irq(board->irq_pin));
389 }
390
391 return 0;
392}
393
394#else
395#define at91_cf_suspend NULL
396#define at91_cf_resume NULL
397#endif
398
399static struct platform_driver at91_cf_driver = {
400 .driver = {
401 .name = "at91_cf",
402 .of_match_table = of_match_ptr(at91_cf_dt_ids),
403 },
404 .probe = at91_cf_probe,
405 .remove = at91_cf_remove,
406 .suspend = at91_cf_suspend,
407 .resume = at91_cf_resume,
408};
409
410module_platform_driver(at91_cf_driver);
411
412MODULE_DESCRIPTION("AT91 Compact Flash Driver");
413MODULE_AUTHOR("David Brownell");
414MODULE_LICENSE("GPL");
415MODULE_ALIAS("platform:at91_cf");