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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
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 int ret;
50
51 if (platform_scoop_config->pcmcia_init)
52 platform_scoop_config->pcmcia_init();
53
54
55 if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
56 struct pcmcia_irqs cd_irq;
57
58 cd_irq.sock = skt->nr;
59 cd_irq.irq = SCOOP_DEV[skt->nr].cd_irq;
60 cd_irq.str = SCOOP_DEV[skt->nr].cd_irq_str;
61 ret = soc_pcmcia_request_irqs(skt, &cd_irq, 1);
62
63 if (ret) {
64 printk(KERN_ERR "Request for Compact Flash IRQ failed\n");
65 return ret;
66 }
67 }
68
69 skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;
70
71 return 0;
72}
73
74static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
75{
76 if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
77 struct pcmcia_irqs cd_irq;
78
79 cd_irq.sock = skt->nr;
80 cd_irq.irq = SCOOP_DEV[skt->nr].cd_irq;
81 cd_irq.str = SCOOP_DEV[skt->nr].cd_irq_str;
82 soc_pcmcia_free_irqs(skt, &cd_irq, 1);
83 }
84}
85
86
87static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
88 struct pcmcia_state *state)
89{
90 unsigned short cpr, csr;
91 struct device *scoop = SCOOP_DEV[skt->nr].dev;
92
93 cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
94
95 write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
96 write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
97 write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
98 csr = read_scoop_reg(scoop, SCOOP_CSR);
99 if (csr & 0x0004) {
100
101 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
102 SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
103 }
104 else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
105
106 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
107 csr |= SCOOP_DEV[skt->nr].keep_vs;
108 }
109 else if (cpr & 0x0003) {
110
111 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
112 SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
113 }
114 else {
115
116 if ((machine_is_spitz() || machine_is_borzoi()) && skt->nr == 1) {
117 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
118 } else {
119 write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
120 }
121 }
122
123 state->detect = (csr & 0x0004) ? 0 : 1;
124 state->ready = (csr & 0x0002) ? 1 : 0;
125 state->bvd1 = (csr & 0x0010) ? 1 : 0;
126 state->bvd2 = (csr & 0x0020) ? 1 : 0;
127 state->wrprot = (csr & 0x0008) ? 1 : 0;
128 state->vs_3v = (csr & 0x0040) ? 0 : 1;
129 state->vs_Xv = (csr & 0x0080) ? 0 : 1;
130
131 if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
132 printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
133 }
134}
135
136
137static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
138 const socket_state_t *state)
139{
140 unsigned long flags;
141 struct device *scoop = SCOOP_DEV[skt->nr].dev;
142
143 unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;
144
145 switch (state->Vcc) {
146 case 0: break;
147 case 33: break;
148 case 50: break;
149 default:
150 printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
151 return -1;
152 }
153
154 if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
155 printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
156 return -1;
157 }
158
159 local_irq_save(flags);
160
161 nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
162 ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
163 nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
164 nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
165
166 if ((machine_is_spitz() || machine_is_borzoi() || machine_is_akita()) && skt->nr == 0) {
167 ncpr |= (state->Vcc == 33) ? 0x0002 :
168 (state->Vcc == 50) ? 0x0002 : 0;
169 } else {
170 ncpr |= (state->Vcc == 33) ? 0x0001 :
171 (state->Vcc == 50) ? 0x0002 : 0;
172 }
173 nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0;
174 ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
175 nccr |= (state->flags&SS_RESET)? 0x0080: 0;
176 nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)|
177 ((skt->status&SS_READY) ? 0x0002 : 0)|
178 ((skt->status&SS_BATDEAD)? 0x0010 : 0)|
179 ((skt->status&SS_BATWARN)? 0x0020 : 0)|
180 ((skt->status&SS_STSCHG) ? 0x0010 : 0)|
181 ((skt->status&SS_WRPROT) ? 0x0008 : 0);
182
183 if (!(ncpr & 0x0003)) {
184 SCOOP_DEV[skt->nr].keep_rd = 0;
185 } else if (!SCOOP_DEV[skt->nr].keep_rd) {
186 if (nccr & 0x0080)
187 SCOOP_DEV[skt->nr].keep_rd = 1;
188 else
189 nccr |= 0x0080;
190 }
191
192 if (mcr != nmcr)
193 write_scoop_reg(scoop, SCOOP_MCR, nmcr);
194 if (cpr != ncpr) {
195 if (platform_scoop_config->power_ctrl)
196 platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr);
197 else
198 write_scoop_reg(scoop, SCOOP_CPR, ncpr);
199 }
200 if (ccr != nccr)
201 write_scoop_reg(scoop, SCOOP_CCR, nccr);
202 if (imr != nimr)
203 write_scoop_reg(scoop, SCOOP_IMR, nimr);
204
205 local_irq_restore(flags);
206
207 return 0;
208}
209
210static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
211{
212 sharpsl_pcmcia_init_reset(skt);
213
214
215 write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0);
216 write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101);
217 SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
218}
219
220static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
221{
222 sharpsl_pcmcia_init_reset(skt);
223}
224
225static struct pcmcia_low_level sharpsl_pcmcia_ops __initdata = {
226 .owner = THIS_MODULE,
227 .hw_init = sharpsl_pcmcia_hw_init,
228 .hw_shutdown = sharpsl_pcmcia_hw_shutdown,
229 .socket_state = sharpsl_pcmcia_socket_state,
230 .configure_socket = sharpsl_pcmcia_configure_socket,
231 .socket_init = sharpsl_pcmcia_socket_init,
232 .socket_suspend = sharpsl_pcmcia_socket_suspend,
233 .first = 0,
234 .nr = 0,
235};
236
237#ifdef CONFIG_SA1100_COLLIE
238#include "sa11xx_base.h"
239
240int __devinit pcmcia_collie_init(struct device *dev)
241{
242 int ret = -ENODEV;
243
244 if (machine_is_collie())
245 ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);
246
247 return ret;
248}
249
250#else
251
252static struct platform_device *sharpsl_pcmcia_device;
253
254static int __init sharpsl_pcmcia_init(void)
255{
256 int ret;
257
258 if (!platform_scoop_config)
259 return -ENODEV;
260
261 sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
262 sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
263
264 if (!sharpsl_pcmcia_device)
265 return -ENOMEM;
266
267 ret = platform_device_add_data(sharpsl_pcmcia_device,
268 &sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops));
269 if (ret == 0) {
270 sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
271 ret = platform_device_add(sharpsl_pcmcia_device);
272 }
273
274 if (ret)
275 platform_device_put(sharpsl_pcmcia_device);
276
277 return ret;
278}
279
280static void __exit sharpsl_pcmcia_exit(void)
281{
282 platform_device_unregister(sharpsl_pcmcia_device);
283}
284
285fs_initcall(sharpsl_pcmcia_init);
286module_exit(sharpsl_pcmcia_exit);
287#endif
288
289MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
290MODULE_LICENSE("GPL");
291MODULE_ALIAS("platform:pxa2xx-pcmcia");
292
