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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
31static 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
47static 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
59static 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
109static 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
182static 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
192static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
193{
194 sharpsl_pcmcia_init_reset(skt);
195}
196
197static struct pcmcia_low_level sharpsl_pcmcia_ops = {
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
211int 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
223static struct platform_device *sharpsl_pcmcia_device;
224
225static 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
251static void __exit sharpsl_pcmcia_exit(void)
252{
253 platform_device_unregister(sharpsl_pcmcia_device);
254}
255
256fs_initcall(sharpsl_pcmcia_init);
257module_exit(sharpsl_pcmcia_exit);
258#endif
259
260MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
261MODULE_LICENSE("GPL");
262MODULE_ALIAS("platform:pxa2xx-pcmcia");
263

Warning: That file was not part of the compilation database. It may have many parsing errors.