2 * Sharp SL-C7xx Series PCMCIA routines
4 * Copyright (c) 2004-2005 Richard Purdie
6 * Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c
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.
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>
21 #include <asm/mach-types.h>
22 #include <asm/hardware.h>
24 #include <asm/hardware/scoop.h>
25 #ifdef CONFIG_SA1100_COLLIE
26 #include <asm/arch-sa1100/collie.h>
28 #include <asm/arch-pxa/pxa-regs.h>
31 #include "soc_common.h"
33 #define NO_KEEP_VS 0x0001
35 static void sharpsl_pcmcia_init_reset(struct scoop_pcmcia_dev *scoopdev)
37 reset_scoop(scoopdev->dev);
38 scoopdev->keep_vs = NO_KEEP_VS;
39 scoopdev->keep_rd = 0;
42 static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
46 #ifndef CONFIG_SA1100_COLLIE
48 * Setup default state of GPIO outputs
49 * before we enable them as outputs.
52 GPIO_bit(GPIO48_nPOE) |
53 GPIO_bit(GPIO49_nPWE) |
54 GPIO_bit(GPIO50_nPIOR) |
55 GPIO_bit(GPIO51_nPIOW) |
56 GPIO_bit(GPIO52_nPCE_1) |
57 GPIO_bit(GPIO53_nPCE_2);
59 pxa_gpio_mode(GPIO48_nPOE_MD);
60 pxa_gpio_mode(GPIO49_nPWE_MD);
61 pxa_gpio_mode(GPIO50_nPIOR_MD);
62 pxa_gpio_mode(GPIO51_nPIOW_MD);
63 pxa_gpio_mode(GPIO52_nPCE_1_MD);
64 pxa_gpio_mode(GPIO53_nPCE_2_MD);
65 pxa_gpio_mode(GPIO54_pSKTSEL_MD);
66 pxa_gpio_mode(GPIO55_nPREG_MD);
67 pxa_gpio_mode(GPIO56_nPWAIT_MD);
68 pxa_gpio_mode(GPIO57_nIOIS16_MD);
71 /* Register interrupts */
72 if (scoop_devs[skt->nr].cd_irq >= 0) {
73 struct pcmcia_irqs cd_irq;
75 cd_irq.sock = skt->nr;
76 cd_irq.irq = scoop_devs[skt->nr].cd_irq;
77 cd_irq.str = scoop_devs[skt->nr].cd_irq_str;
78 ret = soc_pcmcia_request_irqs(skt, &cd_irq, 1);
81 printk(KERN_ERR "Request for Compact Flash IRQ failed\n");
86 skt->irq = scoop_devs[skt->nr].irq;
91 static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
93 if (scoop_devs[skt->nr].cd_irq >= 0) {
94 struct pcmcia_irqs cd_irq;
96 cd_irq.sock = skt->nr;
97 cd_irq.irq = scoop_devs[skt->nr].cd_irq;
98 cd_irq.str = scoop_devs[skt->nr].cd_irq_str;
99 soc_pcmcia_free_irqs(skt, &cd_irq, 1);
104 static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
105 struct pcmcia_state *state)
107 unsigned short cpr, csr;
108 struct device *scoop = scoop_devs[skt->nr].dev;
110 cpr = read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR);
112 write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
113 write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
114 write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
115 csr = read_scoop_reg(scoop, SCOOP_CSR);
118 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
119 scoop_devs[skt->nr].keep_vs = NO_KEEP_VS;
121 else if (!(scoop_devs[skt->nr].keep_vs & NO_KEEP_VS)) {
123 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
124 csr |= scoop_devs[skt->nr].keep_vs;
126 else if (cpr & 0x0003) {
128 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
129 scoop_devs[skt->nr].keep_vs = (csr & 0x00C0);
133 write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
136 state->detect = (csr & 0x0004) ? 0 : 1;
137 state->ready = (csr & 0x0002) ? 1 : 0;
138 state->bvd1 = (csr & 0x0010) ? 1 : 0;
139 state->bvd2 = (csr & 0x0020) ? 1 : 0;
140 state->wrprot = (csr & 0x0008) ? 1 : 0;
141 state->vs_3v = (csr & 0x0040) ? 0 : 1;
142 state->vs_Xv = (csr & 0x0080) ? 0 : 1;
144 if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
145 printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
151 static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
152 const socket_state_t *state)
155 struct device *scoop = scoop_devs[skt->nr].dev;
157 unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;
159 switch (state->Vcc) {
164 printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
168 if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
169 printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
173 local_irq_save(flags);
175 nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
176 ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
177 nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
178 nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
180 ncpr |= (state->Vcc == 33) ? 0x0001 :
181 (state->Vcc == 50) ? 0x0002 : 0;
182 nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0;
183 ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
184 nccr |= (state->flags&SS_RESET)? 0x0080: 0;
185 nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)|
186 ((skt->status&SS_READY) ? 0x0002 : 0)|
187 ((skt->status&SS_BATDEAD)? 0x0010 : 0)|
188 ((skt->status&SS_BATWARN)? 0x0020 : 0)|
189 ((skt->status&SS_STSCHG) ? 0x0010 : 0)|
190 ((skt->status&SS_WRPROT) ? 0x0008 : 0);
192 if (!(ncpr & 0x0003)) {
193 scoop_devs[skt->nr].keep_rd = 0;
194 } else if (!scoop_devs[skt->nr].keep_rd) {
196 scoop_devs[skt->nr].keep_rd = 1;
202 write_scoop_reg(scoop, SCOOP_MCR, nmcr);
204 write_scoop_reg(scoop, SCOOP_CPR, ncpr);
206 write_scoop_reg(scoop, SCOOP_CCR, nccr);
208 write_scoop_reg(scoop, SCOOP_IMR, nimr);
210 local_irq_restore(flags);
215 static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
217 sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]);
219 /* Enable interrupt */
220 write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_IMR, 0x00C0);
221 write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_MCR, 0x0101);
222 scoop_devs[skt->nr].keep_vs = NO_KEEP_VS;
224 if (machine_is_collie())
225 /* We need to disable SS_OUTPUT_ENA here. */
226 write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR, read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR) & ~0x0080);
229 static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
232 sharpsl_pcmcia_init_reset(&scoop_devs[skt->nr]);
234 if (machine_is_collie())
235 /* We need to disable SS_OUTPUT_ENA here. */
236 write_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR, read_scoop_reg(scoop_devs[skt->nr].dev, SCOOP_CPR) & ~0x0080);
239 static struct pcmcia_low_level sharpsl_pcmcia_ops = {
240 .owner = THIS_MODULE,
241 .hw_init = sharpsl_pcmcia_hw_init,
242 .hw_shutdown = sharpsl_pcmcia_hw_shutdown,
243 .socket_state = sharpsl_pcmcia_socket_state,
244 .configure_socket = sharpsl_pcmcia_configure_socket,
245 .socket_init = sharpsl_pcmcia_socket_init,
246 .socket_suspend = sharpsl_pcmcia_socket_suspend,
251 static struct platform_device *sharpsl_pcmcia_device;
253 #ifdef CONFIG_SA1100_COLLIE
254 int __init pcmcia_collie_init(struct device *dev)
258 if (machine_is_collie())
259 ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);
266 static int __init sharpsl_pcmcia_init(void)
270 sharpsl_pcmcia_ops.nr=scoop_num;
271 sharpsl_pcmcia_device = kmalloc(sizeof(*sharpsl_pcmcia_device), GFP_KERNEL);
272 if (!sharpsl_pcmcia_device)
275 memset(sharpsl_pcmcia_device, 0, sizeof(*sharpsl_pcmcia_device));
276 sharpsl_pcmcia_device->name = "pxa2xx-pcmcia";
277 sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops;
278 sharpsl_pcmcia_device->dev.parent=scoop_devs[0].dev;
280 ret = platform_device_register(sharpsl_pcmcia_device);
282 kfree(sharpsl_pcmcia_device);
287 static void __exit sharpsl_pcmcia_exit(void)
290 * This call is supposed to free our sharpsl_pcmcia_device.
291 * Unfortunately platform_device don't have a free method, and
292 * we can't assume it's free of any reference at this point so we
293 * can't free it either.
295 platform_device_unregister(sharpsl_pcmcia_device);
298 fs_initcall(sharpsl_pcmcia_init);
299 module_exit(sharpsl_pcmcia_exit);
302 MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
303 MODULE_LICENSE("GPL");