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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>
Russell Kinga09e64f2008-08-05 16:14:15 +010022#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#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
Richard Purdiea63ae442005-11-08 19:15:43 +000029#define SCOOP_DEV platform_scoop_config->devs
30
Richard Purdie945b9572006-01-05 20:44:57 +000031static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt)
Linus Torvalds1da177e2005-04-16 15:20:36 -070032{
Richard Purdie945b9572006-01-05 20:44:57 +000033 struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr];
34
Richard Purdie0ce76252005-09-05 20:49:54 +010035 reset_scoop(scoopdev->dev);
Richard Purdie945b9572006-01-05 20:44:57 +000036
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
Richard Purdie0ce76252005-09-05 20:49:54 +010043 scoopdev->keep_vs = NO_KEEP_VS;
44 scoopdev->keep_rd = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070045}
46
47static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
48{
Richard Purdiea63ae442005-11-08 19:15:43 +000049 if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
Russell Kinga9bb5a42012-01-13 22:56:32 +000050 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 }
53
Russell King - ARM Linux66024db2009-03-29 22:45:26 +010054 skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
56 return 0;
57}
58
Linus Torvalds1da177e2005-04-16 15:20:36 -070059static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
60 struct pcmcia_state *state)
61{
62 unsigned short cpr, csr;
Richard Purdiea63ae442005-11-08 19:15:43 +000063 struct device *scoop = SCOOP_DEV[skt->nr].dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
Richard Purdiea63ae442005-11-08 19:15:43 +000065 cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
Richard Purdie0ce76252005-09-05 20:49:54 +010067 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 if (csr & 0x0004) {
72 /* card eject */
Richard Purdie0ce76252005-09-05 20:49:54 +010073 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
Richard Purdiea63ae442005-11-08 19:15:43 +000074 SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
Linus Torvalds1da177e2005-04-16 15:20:36 -070075 }
Richard Purdiea63ae442005-11-08 19:15:43 +000076 else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 /* keep vs1,vs2 */
Richard Purdie0ce76252005-09-05 20:49:54 +010078 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
Richard Purdiea63ae442005-11-08 19:15:43 +000079 csr |= SCOOP_DEV[skt->nr].keep_vs;
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 }
81 else if (cpr & 0x0003) {
82 /* power on */
Richard Purdie0ce76252005-09-05 20:49:54 +010083 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
Richard Purdiea63ae442005-11-08 19:15:43 +000084 SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 }
86 else {
87 /* card detect */
Richard Purdiea63ae442005-11-08 19:15:43 +000088 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 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 }
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 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106}
107
108
109static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
110 const socket_state_t *state)
111{
112 unsigned long flags;
Richard Purdiea63ae442005-11-08 19:15:43 +0000113 struct device *scoop = SCOOP_DEV[skt->nr].dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
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
Richard Purdie0ce76252005-09-05 20:49:54 +0100133 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
Richard Purdiea63ae442005-11-08 19:15:43 +0000138 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 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 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)) {
Richard Purdiea63ae442005-11-08 19:15:43 +0000156 SCOOP_DEV[skt->nr].keep_rd = 0;
157 } else if (!SCOOP_DEV[skt->nr].keep_rd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 if (nccr & 0x0080)
Richard Purdiea63ae442005-11-08 19:15:43 +0000159 SCOOP_DEV[skt->nr].keep_rd = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 else
161 nccr |= 0x0080;
162 }
163
164 if (mcr != nmcr)
Richard Purdie0ce76252005-09-05 20:49:54 +0100165 write_scoop_reg(scoop, SCOOP_MCR, nmcr);
Richard Purdiea63ae442005-11-08 19:15:43 +0000166 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 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 if (ccr != nccr)
Richard Purdie0ce76252005-09-05 20:49:54 +0100173 write_scoop_reg(scoop, SCOOP_CCR, nccr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 if (imr != nimr)
Richard Purdie0ce76252005-09-05 20:49:54 +0100175 write_scoop_reg(scoop, SCOOP_IMR, nimr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
177 local_irq_restore(flags);
178
179 return 0;
180}
181
182static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
183{
Richard Purdie945b9572006-01-05 20:44:57 +0000184 sharpsl_pcmcia_init_reset(skt);
Richard Purdie0ce76252005-09-05 20:49:54 +0100185
186 /* Enable interrupt */
Richard Purdiea63ae442005-11-08 19:15:43 +0000187 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190}
191
192static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
193{
Richard Purdie945b9572006-01-05 20:44:57 +0000194 sharpsl_pcmcia_init_reset(skt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195}
196
Russell King4e5e8de2008-04-24 15:28:11 +0100197static struct pcmcia_low_level sharpsl_pcmcia_ops __initdata = {
Richard Purdiea63ae442005-11-08 19:15:43 +0000198 .owner = THIS_MODULE,
199 .hw_init = sharpsl_pcmcia_hw_init,
Richard Purdiea63ae442005-11-08 19:15:43 +0000200 .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,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206};
207
Pavel Machek77bb86a2005-10-30 23:39:02 +0000208#ifdef CONFIG_SA1100_COLLIE
Richard Purdiea63ae442005-11-08 19:15:43 +0000209#include "sa11xx_base.h"
210
Uwe Kleine-König5b85e042010-11-04 10:46:14 +0100211int __devinit pcmcia_collie_init(struct device *dev)
Pavel Machek77bb86a2005-10-30 23:39:02 +0000212{
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
Richard Purdiea63ae442005-11-08 19:15:43 +0000223static struct platform_device *sharpsl_pcmcia_device;
224
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225static int __init sharpsl_pcmcia_init(void)
226{
227 int ret;
228
Dmitry Baryshkovae1036a2009-04-20 17:48:28 +0100229 if (!platform_scoop_config)
230 return -ENODEV;
231
Richard Purdieb0164502006-01-10 17:16:12 +0000232 sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
233 sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
234
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 if (!sharpsl_pcmcia_device)
236 return -ENOMEM;
Richard Purdie0ce76252005-09-05 20:49:54 +0100237
Russell King4e5e8de2008-04-24 15:28:11 +0100238 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 }
Richard Purdieb0164502006-01-10 17:16:12 +0000244
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 if (ret)
Richard Purdieb0164502006-01-10 17:16:12 +0000246 platform_device_put(sharpsl_pcmcia_device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247
248 return ret;
249}
250
251static void __exit sharpsl_pcmcia_exit(void)
252{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 platform_device_unregister(sharpsl_pcmcia_device);
254}
255
Richard Purdief36598ae2005-09-03 19:39:25 +0100256fs_initcall(sharpsl_pcmcia_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257module_exit(sharpsl_pcmcia_exit);
Pavel Machek77bb86a2005-10-30 23:39:02 +0000258#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259
260MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
261MODULE_LICENSE("GPL");
Kay Sievers43cc71e2007-08-18 04:40:39 +0200262MODULE_ALIAS("platform:pxa2xx-pcmcia");