ARM: gpio: pxa: convert drivers to use asm/gpio.h rather than mach/gpio.h
[linux-2.6.git] / drivers / pcmcia / pxa2xx_sharpsl.c
1 /*
2  * Sharp SL-C7xx Series PCMCIA routines
3  *
4  * Copyright (c) 2004-2005 Richard Purdie
5  *
6  * Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  *
12  */
13
14 #include <linux/module.h>
15 #include <linux/init.h>
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/interrupt.h>
19 #include <linux/platform_device.h>
20
21 #include <asm/mach-types.h>
22 #include <mach/hardware.h>
23 #include <asm/irq.h>
24 #include <asm/hardware/scoop.h>
25
26 #include "soc_common.h"
27
28 #define NO_KEEP_VS 0x0001
29 #define SCOOP_DEV platform_scoop_config->devs
30
31 static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt)
32 {
33         struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr];
34
35         reset_scoop(scoopdev->dev);
36
37         /* Shared power controls need to be handled carefully */
38         if (platform_scoop_config->power_ctrl)
39                 platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr);
40         else
41                 write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000);
42
43         scoopdev->keep_vs = NO_KEEP_VS;
44         scoopdev->keep_rd = 0;
45 }
46
47 static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
48 {
49         int ret;
50
51         /* Register interrupts */
52         if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
53                 struct pcmcia_irqs cd_irq;
54
55                 cd_irq.sock = skt->nr;
56                 cd_irq.irq  = SCOOP_DEV[skt->nr].cd_irq;
57                 cd_irq.str  = SCOOP_DEV[skt->nr].cd_irq_str;
58                 ret = soc_pcmcia_request_irqs(skt, &cd_irq, 1);
59
60                 if (ret) {
61                         printk(KERN_ERR "Request for Compact Flash IRQ failed\n");
62                         return ret;
63                 }
64         }
65
66         skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;
67
68         return 0;
69 }
70
71 static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
72 {
73         if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
74                 struct pcmcia_irqs cd_irq;
75
76                 cd_irq.sock = skt->nr;
77                 cd_irq.irq  = SCOOP_DEV[skt->nr].cd_irq;
78                 cd_irq.str  = SCOOP_DEV[skt->nr].cd_irq_str;
79                 soc_pcmcia_free_irqs(skt, &cd_irq, 1);
80         }
81 }
82
83
84 static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
85                                     struct pcmcia_state *state)
86 {
87         unsigned short cpr, csr;
88         struct device *scoop = SCOOP_DEV[skt->nr].dev;
89
90         cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
91
92         write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
93         write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
94         write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
95         csr = read_scoop_reg(scoop, SCOOP_CSR);
96         if (csr & 0x0004) {
97                 /* card eject */
98                 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
99                 SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
100         }
101         else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
102                 /* keep vs1,vs2 */
103                 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
104                 csr |= SCOOP_DEV[skt->nr].keep_vs;
105         }
106         else if (cpr & 0x0003) {
107                 /* power on */
108                 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
109                 SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
110         }
111         else {
112                 /* card detect */
113                 if ((machine_is_spitz() || machine_is_borzoi()) && skt->nr == 1) {
114                         write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
115                 } else {
116                         write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
117                 }
118         }
119
120         state->detect = (csr & 0x0004) ? 0 : 1;
121         state->ready  = (csr & 0x0002) ? 1 : 0;
122         state->bvd1   = (csr & 0x0010) ? 1 : 0;
123         state->bvd2   = (csr & 0x0020) ? 1 : 0;
124         state->wrprot = (csr & 0x0008) ? 1 : 0;
125         state->vs_3v  = (csr & 0x0040) ? 0 : 1;
126         state->vs_Xv  = (csr & 0x0080) ? 0 : 1;
127
128         if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
129                 printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
130         }
131 }
132
133
134 static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
135                                        const socket_state_t *state)
136 {
137         unsigned long flags;
138         struct device *scoop = SCOOP_DEV[skt->nr].dev;
139
140         unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;
141
142         switch (state->Vcc) {
143         case    0:      break;
144         case    33:     break;
145         case    50:     break;
146         default:
147                  printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
148                  return -1;
149         }
150
151         if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
152                 printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
153                 return -1;
154         }
155
156         local_irq_save(flags);
157
158         nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
159         ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
160         nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
161         nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
162
163         if ((machine_is_spitz() || machine_is_borzoi() || machine_is_akita()) && skt->nr == 0) {
164                 ncpr |= (state->Vcc == 33) ? 0x0002 :
165                         (state->Vcc == 50) ? 0x0002 : 0;
166         } else {
167                 ncpr |= (state->Vcc == 33) ? 0x0001 :
168                         (state->Vcc == 50) ? 0x0002 : 0;
169         }
170         nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0;
171         ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
172         nccr |= (state->flags&SS_RESET)? 0x0080: 0;
173         nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)|
174                         ((skt->status&SS_READY)  ? 0x0002 : 0)|
175                         ((skt->status&SS_BATDEAD)? 0x0010 : 0)|
176                         ((skt->status&SS_BATWARN)? 0x0020 : 0)|
177                         ((skt->status&SS_STSCHG) ? 0x0010 : 0)|
178                         ((skt->status&SS_WRPROT) ? 0x0008 : 0);
179
180         if (!(ncpr & 0x0003)) {
181                 SCOOP_DEV[skt->nr].keep_rd = 0;
182         } else if (!SCOOP_DEV[skt->nr].keep_rd) {
183                 if (nccr & 0x0080)
184                         SCOOP_DEV[skt->nr].keep_rd = 1;
185                 else
186                         nccr |= 0x0080;
187         }
188
189         if (mcr != nmcr)
190                 write_scoop_reg(scoop, SCOOP_MCR, nmcr);
191         if (cpr != ncpr) {
192                 if (platform_scoop_config->power_ctrl)
193                         platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr);
194                 else
195                         write_scoop_reg(scoop, SCOOP_CPR, ncpr);
196         }
197         if (ccr != nccr)
198                 write_scoop_reg(scoop, SCOOP_CCR, nccr);
199         if (imr != nimr)
200                 write_scoop_reg(scoop, SCOOP_IMR, nimr);
201
202         local_irq_restore(flags);
203
204         return 0;
205 }
206
207 static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
208 {
209         sharpsl_pcmcia_init_reset(skt);
210
211         /* Enable interrupt */
212         write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0);
213         write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101);
214         SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
215 }
216
217 static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
218 {
219         sharpsl_pcmcia_init_reset(skt);
220 }
221
222 static struct pcmcia_low_level sharpsl_pcmcia_ops __initdata = {
223         .owner                  = THIS_MODULE,
224         .hw_init                = sharpsl_pcmcia_hw_init,
225         .hw_shutdown            = sharpsl_pcmcia_hw_shutdown,
226         .socket_state           = sharpsl_pcmcia_socket_state,
227         .configure_socket       = sharpsl_pcmcia_configure_socket,
228         .socket_init            = sharpsl_pcmcia_socket_init,
229         .socket_suspend         = sharpsl_pcmcia_socket_suspend,
230         .first                  = 0,
231         .nr                     = 0,
232 };
233
234 #ifdef CONFIG_SA1100_COLLIE
235 #include "sa11xx_base.h"
236
237 int __devinit pcmcia_collie_init(struct device *dev)
238 {
239        int ret = -ENODEV;
240
241        if (machine_is_collie())
242                ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);
243
244        return ret;
245 }
246
247 #else
248
249 static struct platform_device *sharpsl_pcmcia_device;
250
251 static int __init sharpsl_pcmcia_init(void)
252 {
253         int ret;
254
255         if (!platform_scoop_config)
256                 return -ENODEV;
257
258         sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
259         sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
260
261         if (!sharpsl_pcmcia_device)
262                 return -ENOMEM;
263
264         ret = platform_device_add_data(sharpsl_pcmcia_device,
265                         &sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops));
266         if (ret == 0) {
267                 sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
268                 ret = platform_device_add(sharpsl_pcmcia_device);
269         }
270
271         if (ret)
272                 platform_device_put(sharpsl_pcmcia_device);
273
274         return ret;
275 }
276
277 static void __exit sharpsl_pcmcia_exit(void)
278 {
279         platform_device_unregister(sharpsl_pcmcia_device);
280 }
281
282 fs_initcall(sharpsl_pcmcia_init);
283 module_exit(sharpsl_pcmcia_exit);
284 #endif
285
286 MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
287 MODULE_LICENSE("GPL");
288 MODULE_ALIAS("platform:pxa2xx-pcmcia");