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");