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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Russell Kingd052d1b2005-10-29 19:07:23 +010019#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
Pavel Machek77bb86a2005-10-30 23:39:02 +000021#include <asm/mach-types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <asm/hardware.h>
23#include <asm/irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <asm/hardware/scoop.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26#include "soc_common.h"
27
28#define NO_KEEP_VS 0x0001
29
Richard Purdiea63ae442005-11-08 19:15:43 +000030/* PCMCIA to Scoop linkage
31
32 There is no easy way to link multiple scoop devices into one
33 single entity for the pxa2xx_pcmcia device so this structure
34 is used which is setup by the platform code
35*/
36struct scoop_pcmcia_config *platform_scoop_config;
37#define SCOOP_DEV platform_scoop_config->devs
38
Richard Purdie945b9572006-01-05 20:44:57 +000039static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt)
Linus Torvalds1da177e2005-04-16 15:20:36 -070040{
Richard Purdie945b9572006-01-05 20:44:57 +000041 struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr];
42
Richard Purdie0ce76252005-09-05 20:49:54 +010043 reset_scoop(scoopdev->dev);
Richard Purdie945b9572006-01-05 20:44:57 +000044
45 /* Shared power controls need to be handled carefully */
46 if (platform_scoop_config->power_ctrl)
47 platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr);
48 else
49 write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000);
50
Richard Purdie0ce76252005-09-05 20:49:54 +010051 scoopdev->keep_vs = NO_KEEP_VS;
52 scoopdev->keep_rd = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070053}
54
55static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
56{
57 int ret;
58
Richard Purdiea63ae442005-11-08 19:15:43 +000059 if (platform_scoop_config->pcmcia_init)
60 platform_scoop_config->pcmcia_init();
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
62 /* Register interrupts */
Richard Purdiea63ae442005-11-08 19:15:43 +000063 if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
Richard Purdie0ce76252005-09-05 20:49:54 +010064 struct pcmcia_irqs cd_irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Richard Purdie0ce76252005-09-05 20:49:54 +010066 cd_irq.sock = skt->nr;
Richard Purdiea63ae442005-11-08 19:15:43 +000067 cd_irq.irq = SCOOP_DEV[skt->nr].cd_irq;
68 cd_irq.str = SCOOP_DEV[skt->nr].cd_irq_str;
Richard Purdie0ce76252005-09-05 20:49:54 +010069 ret = soc_pcmcia_request_irqs(skt, &cd_irq, 1);
70
71 if (ret) {
72 printk(KERN_ERR "Request for Compact Flash IRQ failed\n");
73 return ret;
74 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070075 }
76
Richard Purdiea63ae442005-11-08 19:15:43 +000077 skt->irq = SCOOP_DEV[skt->nr].irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
79 return 0;
80}
81
82static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
83{
Richard Purdiea63ae442005-11-08 19:15:43 +000084 if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
Richard Purdie0ce76252005-09-05 20:49:54 +010085 struct pcmcia_irqs cd_irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Richard Purdie0ce76252005-09-05 20:49:54 +010087 cd_irq.sock = skt->nr;
Richard Purdiea63ae442005-11-08 19:15:43 +000088 cd_irq.irq = SCOOP_DEV[skt->nr].cd_irq;
89 cd_irq.str = SCOOP_DEV[skt->nr].cd_irq_str;
Richard Purdie0ce76252005-09-05 20:49:54 +010090 soc_pcmcia_free_irqs(skt, &cd_irq, 1);
91 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070092}
93
94
95static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
96 struct pcmcia_state *state)
97{
98 unsigned short cpr, csr;
Richard Purdiea63ae442005-11-08 19:15:43 +000099 struct device *scoop = SCOOP_DEV[skt->nr].dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100
Richard Purdiea63ae442005-11-08 19:15:43 +0000101 cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102
Richard Purdie0ce76252005-09-05 20:49:54 +0100103 write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
104 write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
105 write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
106 csr = read_scoop_reg(scoop, SCOOP_CSR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 if (csr & 0x0004) {
108 /* card eject */
Richard Purdie0ce76252005-09-05 20:49:54 +0100109 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
Richard Purdiea63ae442005-11-08 19:15:43 +0000110 SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 }
Richard Purdiea63ae442005-11-08 19:15:43 +0000112 else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 /* keep vs1,vs2 */
Richard Purdie0ce76252005-09-05 20:49:54 +0100114 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
Richard Purdiea63ae442005-11-08 19:15:43 +0000115 csr |= SCOOP_DEV[skt->nr].keep_vs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 }
117 else if (cpr & 0x0003) {
118 /* power on */
Richard Purdie0ce76252005-09-05 20:49:54 +0100119 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
Richard Purdiea63ae442005-11-08 19:15:43 +0000120 SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 }
122 else {
123 /* card detect */
Richard Purdiea63ae442005-11-08 19:15:43 +0000124 if ((machine_is_spitz() || machine_is_borzoi()) && skt->nr == 1) {
125 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
126 } else {
127 write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
128 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129 }
130
131 state->detect = (csr & 0x0004) ? 0 : 1;
132 state->ready = (csr & 0x0002) ? 1 : 0;
133 state->bvd1 = (csr & 0x0010) ? 1 : 0;
134 state->bvd2 = (csr & 0x0020) ? 1 : 0;
135 state->wrprot = (csr & 0x0008) ? 1 : 0;
136 state->vs_3v = (csr & 0x0040) ? 0 : 1;
137 state->vs_Xv = (csr & 0x0080) ? 0 : 1;
138
139 if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
140 printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
141 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142}
143
144
145static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
146 const socket_state_t *state)
147{
148 unsigned long flags;
Richard Purdiea63ae442005-11-08 19:15:43 +0000149 struct device *scoop = SCOOP_DEV[skt->nr].dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
151 unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;
152
153 switch (state->Vcc) {
154 case 0: break;
155 case 33: break;
156 case 50: break;
157 default:
158 printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
159 return -1;
160 }
161
162 if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
163 printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
164 return -1;
165 }
166
167 local_irq_save(flags);
168
Richard Purdie0ce76252005-09-05 20:49:54 +0100169 nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
170 ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
171 nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
172 nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173
Richard Purdiea63ae442005-11-08 19:15:43 +0000174 if ((machine_is_spitz() || machine_is_borzoi() || machine_is_akita()) && skt->nr == 0) {
175 ncpr |= (state->Vcc == 33) ? 0x0002 :
176 (state->Vcc == 50) ? 0x0002 : 0;
177 } else {
178 ncpr |= (state->Vcc == 33) ? 0x0001 :
179 (state->Vcc == 50) ? 0x0002 : 0;
180 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0;
182 ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
183 nccr |= (state->flags&SS_RESET)? 0x0080: 0;
184 nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)|
185 ((skt->status&SS_READY) ? 0x0002 : 0)|
186 ((skt->status&SS_BATDEAD)? 0x0010 : 0)|
187 ((skt->status&SS_BATWARN)? 0x0020 : 0)|
188 ((skt->status&SS_STSCHG) ? 0x0010 : 0)|
189 ((skt->status&SS_WRPROT) ? 0x0008 : 0);
190
191 if (!(ncpr & 0x0003)) {
Richard Purdiea63ae442005-11-08 19:15:43 +0000192 SCOOP_DEV[skt->nr].keep_rd = 0;
193 } else if (!SCOOP_DEV[skt->nr].keep_rd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 if (nccr & 0x0080)
Richard Purdiea63ae442005-11-08 19:15:43 +0000195 SCOOP_DEV[skt->nr].keep_rd = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 else
197 nccr |= 0x0080;
198 }
199
200 if (mcr != nmcr)
Richard Purdie0ce76252005-09-05 20:49:54 +0100201 write_scoop_reg(scoop, SCOOP_MCR, nmcr);
Richard Purdiea63ae442005-11-08 19:15:43 +0000202 if (cpr != ncpr) {
203 if (platform_scoop_config->power_ctrl)
204 platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr);
205 else
206 write_scoop_reg(scoop, SCOOP_CPR, ncpr);
207 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 if (ccr != nccr)
Richard Purdie0ce76252005-09-05 20:49:54 +0100209 write_scoop_reg(scoop, SCOOP_CCR, nccr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 if (imr != nimr)
Richard Purdie0ce76252005-09-05 20:49:54 +0100211 write_scoop_reg(scoop, SCOOP_IMR, nimr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
213 local_irq_restore(flags);
214
215 return 0;
216}
217
218static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
219{
Richard Purdie945b9572006-01-05 20:44:57 +0000220 sharpsl_pcmcia_init_reset(skt);
Richard Purdie0ce76252005-09-05 20:49:54 +0100221
222 /* Enable interrupt */
Richard Purdiea63ae442005-11-08 19:15:43 +0000223 write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0);
224 write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101);
225 SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226}
227
228static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
229{
Richard Purdie945b9572006-01-05 20:44:57 +0000230 sharpsl_pcmcia_init_reset(skt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231}
232
233static struct pcmcia_low_level sharpsl_pcmcia_ops = {
Richard Purdiea63ae442005-11-08 19:15:43 +0000234 .owner = THIS_MODULE,
235 .hw_init = sharpsl_pcmcia_hw_init,
236 .hw_shutdown = sharpsl_pcmcia_hw_shutdown,
237 .socket_state = sharpsl_pcmcia_socket_state,
238 .configure_socket = sharpsl_pcmcia_configure_socket,
239 .socket_init = sharpsl_pcmcia_socket_init,
240 .socket_suspend = sharpsl_pcmcia_socket_suspend,
241 .first = 0,
242 .nr = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243};
244
Pavel Machek77bb86a2005-10-30 23:39:02 +0000245#ifdef CONFIG_SA1100_COLLIE
Richard Purdiea63ae442005-11-08 19:15:43 +0000246#include "sa11xx_base.h"
247
Pavel Machek77bb86a2005-10-30 23:39:02 +0000248int __init pcmcia_collie_init(struct device *dev)
249{
250 int ret = -ENODEV;
251
252 if (machine_is_collie())
253 ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);
254
255 return ret;
256}
257
258#else
259
Richard Purdiea63ae442005-11-08 19:15:43 +0000260static struct platform_device *sharpsl_pcmcia_device;
261
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262static int __init sharpsl_pcmcia_init(void)
263{
264 int ret;
265
Richard Purdiea63ae442005-11-08 19:15:43 +0000266 sharpsl_pcmcia_ops.nr=platform_scoop_config->num_devs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 sharpsl_pcmcia_device = kmalloc(sizeof(*sharpsl_pcmcia_device), GFP_KERNEL);
268 if (!sharpsl_pcmcia_device)
269 return -ENOMEM;
Richard Purdie0ce76252005-09-05 20:49:54 +0100270
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 memset(sharpsl_pcmcia_device, 0, sizeof(*sharpsl_pcmcia_device));
272 sharpsl_pcmcia_device->name = "pxa2xx-pcmcia";
273 sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops;
Richard Purdiea63ae442005-11-08 19:15:43 +0000274 sharpsl_pcmcia_device->dev.parent=platform_scoop_config->devs[0].dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
276 ret = platform_device_register(sharpsl_pcmcia_device);
277 if (ret)
278 kfree(sharpsl_pcmcia_device);
279
280 return ret;
281}
282
283static void __exit sharpsl_pcmcia_exit(void)
284{
285 /*
286 * This call is supposed to free our sharpsl_pcmcia_device.
287 * Unfortunately platform_device don't have a free method, and
288 * we can't assume it's free of any reference at this point so we
289 * can't free it either.
290 */
291 platform_device_unregister(sharpsl_pcmcia_device);
292}
293
Richard Purdief36598ae2005-09-03 19:39:25 +0100294fs_initcall(sharpsl_pcmcia_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295module_exit(sharpsl_pcmcia_exit);
Pavel Machek77bb86a2005-10-30 23:39:02 +0000296#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297
298MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
299MODULE_LICENSE("GPL");