PCMCIA: sa11x0: cerf: convert to use new irq/gpio management
[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         if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
50                 skt->stat[SOC_STAT_CD].irq = SCOOP_DEV[skt->nr].cd_irq;
51                 skt->stat[SOC_STAT_CD].name = SCOOP_DEV[skt->nr].cd_irq_str;
52         }
53
54         skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;
55
56         return 0;
57 }
58
59 static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
60                                     struct pcmcia_state *state)
61 {
62         unsigned short cpr, csr;
63         struct device *scoop = SCOOP_DEV[skt->nr].dev;
64
65         cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
66
67         write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
68         write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
69         write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
70         csr = read_scoop_reg(scoop, SCOOP_CSR);
71         if (csr & 0x0004) {
72                 /* card eject */
73                 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
74                 SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
75         }
76         else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
77                 /* keep vs1,vs2 */
78                 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
79                 csr |= SCOOP_DEV[skt->nr].keep_vs;
80         }
81         else if (cpr & 0x0003) {
82                 /* power on */
83                 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
84                 SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
85         }
86         else {
87                 /* card detect */
88                 if ((machine_is_spitz() || machine_is_borzoi()) && skt->nr == 1) {
89                         write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
90                 } else {
91                         write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
92                 }
93         }
94
95         state->detect = (csr & 0x0004) ? 0 : 1;
96         state->ready  = (csr & 0x0002) ? 1 : 0;
97         state->bvd1   = (csr & 0x0010) ? 1 : 0;
98         state->bvd2   = (csr & 0x0020) ? 1 : 0;
99         state->wrprot = (csr & 0x0008) ? 1 : 0;
100         state->vs_3v  = (csr & 0x0040) ? 0 : 1;
101         state->vs_Xv  = (csr & 0x0080) ? 0 : 1;
102
103         if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
104                 printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
105         }
106 }
107
108
109 static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
110                                        const socket_state_t *state)
111 {
112         unsigned long flags;
113         struct device *scoop = SCOOP_DEV[skt->nr].dev;
114
115         unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;
116
117         switch (state->Vcc) {
118         case    0:      break;
119         case    33:     break;
120         case    50:     break;
121         default:
122                  printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
123                  return -1;
124         }
125
126         if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
127                 printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
128                 return -1;
129         }
130
131         local_irq_save(flags);
132
133         nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
134         ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
135         nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
136         nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
137
138         if ((machine_is_spitz() || machine_is_borzoi() || machine_is_akita()) && skt->nr == 0) {
139                 ncpr |= (state->Vcc == 33) ? 0x0002 :
140                         (state->Vcc == 50) ? 0x0002 : 0;
141         } else {
142                 ncpr |= (state->Vcc == 33) ? 0x0001 :
143                         (state->Vcc == 50) ? 0x0002 : 0;
144         }
145         nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0;
146         ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
147         nccr |= (state->flags&SS_RESET)? 0x0080: 0;
148         nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)|
149                         ((skt->status&SS_READY)  ? 0x0002 : 0)|
150                         ((skt->status&SS_BATDEAD)? 0x0010 : 0)|
151                         ((skt->status&SS_BATWARN)? 0x0020 : 0)|
152                         ((skt->status&SS_STSCHG) ? 0x0010 : 0)|
153                         ((skt->status&SS_WRPROT) ? 0x0008 : 0);
154
155         if (!(ncpr & 0x0003)) {
156                 SCOOP_DEV[skt->nr].keep_rd = 0;
157         } else if (!SCOOP_DEV[skt->nr].keep_rd) {
158                 if (nccr & 0x0080)
159                         SCOOP_DEV[skt->nr].keep_rd = 1;
160                 else
161                         nccr |= 0x0080;
162         }
163
164         if (mcr != nmcr)
165                 write_scoop_reg(scoop, SCOOP_MCR, nmcr);
166         if (cpr != ncpr) {
167                 if (platform_scoop_config->power_ctrl)
168                         platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr);
169                 else
170                         write_scoop_reg(scoop, SCOOP_CPR, ncpr);
171         }
172         if (ccr != nccr)
173                 write_scoop_reg(scoop, SCOOP_CCR, nccr);
174         if (imr != nimr)
175                 write_scoop_reg(scoop, SCOOP_IMR, nimr);
176
177         local_irq_restore(flags);
178
179         return 0;
180 }
181
182 static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
183 {
184         sharpsl_pcmcia_init_reset(skt);
185
186         /* Enable interrupt */
187         write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0);
188         write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101);
189         SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
190 }
191
192 static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
193 {
194         sharpsl_pcmcia_init_reset(skt);
195 }
196
197 static struct pcmcia_low_level sharpsl_pcmcia_ops __initdata = {
198         .owner                  = THIS_MODULE,
199         .hw_init                = sharpsl_pcmcia_hw_init,
200         .socket_state           = sharpsl_pcmcia_socket_state,
201         .configure_socket       = sharpsl_pcmcia_configure_socket,
202         .socket_init            = sharpsl_pcmcia_socket_init,
203         .socket_suspend         = sharpsl_pcmcia_socket_suspend,
204         .first                  = 0,
205         .nr                     = 0,
206 };
207
208 #ifdef CONFIG_SA1100_COLLIE
209 #include "sa11xx_base.h"
210
211 int __devinit pcmcia_collie_init(struct device *dev)
212 {
213        int ret = -ENODEV;
214
215        if (machine_is_collie())
216                ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);
217
218        return ret;
219 }
220
221 #else
222
223 static struct platform_device *sharpsl_pcmcia_device;
224
225 static int __init sharpsl_pcmcia_init(void)
226 {
227         int ret;
228
229         if (!platform_scoop_config)
230                 return -ENODEV;
231
232         sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
233         sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
234
235         if (!sharpsl_pcmcia_device)
236                 return -ENOMEM;
237
238         ret = platform_device_add_data(sharpsl_pcmcia_device,
239                         &sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops));
240         if (ret == 0) {
241                 sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
242                 ret = platform_device_add(sharpsl_pcmcia_device);
243         }
244
245         if (ret)
246                 platform_device_put(sharpsl_pcmcia_device);
247
248         return ret;
249 }
250
251 static void __exit sharpsl_pcmcia_exit(void)
252 {
253         platform_device_unregister(sharpsl_pcmcia_device);
254 }
255
256 fs_initcall(sharpsl_pcmcia_init);
257 module_exit(sharpsl_pcmcia_exit);
258 #endif
259
260 MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
261 MODULE_LICENSE("GPL");
262 MODULE_ALIAS("platform:pxa2xx-pcmcia");