2 * linux/drivers/pcmcia/pxa/pxa_cm_x270.c
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * Compulab Ltd., 2003, 2007
9 * Mike Rapoport <mike@compulab.co.il>
13 #include <linux/kernel.h>
14 #include <linux/sched.h>
15 #include <linux/platform_device.h>
16 #include <linux/irq.h>
17 #include <linux/delay.h>
19 #include <pcmcia/ss.h>
20 #include <asm/hardware.h>
21 #include <asm/mach-types.h>
23 #include <asm/arch/pxa-regs.h>
24 #include <asm/arch/pxa2xx-gpio.h>
25 #include <asm/arch/cm-x270.h>
27 #include "soc_common.h"
29 static struct pcmcia_irqs irqs
[] = {
30 { 0, PCMCIA_S0_CD_VALID
, "PCMCIA0 CD" },
31 { 1, PCMCIA_S1_CD_VALID
, "PCMCIA1 CD" },
34 static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket
*skt
)
36 GPSR(GPIO48_nPOE
) = GPIO_bit(GPIO48_nPOE
) |
37 GPIO_bit(GPIO49_nPWE
) |
38 GPIO_bit(GPIO50_nPIOR
) |
39 GPIO_bit(GPIO51_nPIOW
) |
40 GPIO_bit(GPIO85_nPCE_1
) |
41 GPIO_bit(GPIO54_nPCE_2
);
43 pxa_gpio_mode(GPIO48_nPOE_MD
);
44 pxa_gpio_mode(GPIO49_nPWE_MD
);
45 pxa_gpio_mode(GPIO50_nPIOR_MD
);
46 pxa_gpio_mode(GPIO51_nPIOW_MD
);
47 pxa_gpio_mode(GPIO85_nPCE_1_MD
);
48 pxa_gpio_mode(GPIO54_nPCE_2_MD
);
49 pxa_gpio_mode(GPIO55_nPREG_MD
);
50 pxa_gpio_mode(GPIO56_nPWAIT_MD
);
51 pxa_gpio_mode(GPIO57_nIOIS16_MD
);
54 pxa_gpio_mode(GPIO53_nPCE_2
| GPIO_OUT
);
55 GPCR(GPIO53_nPCE_2
) = GPIO_bit(GPIO53_nPCE_2
);
57 set_irq_type(PCMCIA_S0_CD_VALID
, IRQ_TYPE_EDGE_BOTH
);
58 set_irq_type(PCMCIA_S1_CD_VALID
, IRQ_TYPE_EDGE_BOTH
);
60 /* irq's for slots: */
61 set_irq_type(PCMCIA_S0_RDYINT
, IRQ_TYPE_EDGE_FALLING
);
62 set_irq_type(PCMCIA_S1_RDYINT
, IRQ_TYPE_EDGE_FALLING
);
64 skt
->irq
= (skt
->nr
== 0) ? PCMCIA_S0_RDYINT
: PCMCIA_S1_RDYINT
;
65 return soc_pcmcia_request_irqs(skt
, irqs
, ARRAY_SIZE(irqs
));
68 static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket
*skt
)
70 soc_pcmcia_free_irqs(skt
, irqs
, ARRAY_SIZE(irqs
));
72 set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_CD_VALID
), IRQ_TYPE_NONE
);
73 set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_CD_VALID
), IRQ_TYPE_NONE
);
75 set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_RDYINT
), IRQ_TYPE_NONE
);
76 set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_RDYINT
), IRQ_TYPE_NONE
);
80 static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket
*skt
,
81 struct pcmcia_state
*state
)
83 state
->detect
= (PCC_DETECT(skt
->nr
) == 0) ? 1 : 0;
84 state
->ready
= (PCC_READY(skt
->nr
) == 0) ? 0 : 1;
89 state
->wrprot
= 0; /* not available */
93 static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket
*skt
,
94 const socket_state_t
*state
)
96 GPSR(GPIO49_nPWE
) = GPIO_bit(GPIO49_nPWE
);
97 pxa_gpio_mode(GPIO49_nPWE
| GPIO_OUT
);
101 if (state
->flags
& SS_RESET
) {
102 GPCR(GPIO49_nPWE
) = GPIO_bit(GPIO49_nPWE
);
103 GPSR(GPIO53_nPCE_2
) = GPIO_bit(GPIO53_nPCE_2
);
105 GPCR(GPIO53_nPCE_2
) = GPIO_bit(GPIO53_nPCE_2
);
106 GPSR(GPIO49_nPWE
) = GPIO_bit(GPIO49_nPWE
);
110 if (state
->flags
& SS_RESET
) {
111 GPCR(GPIO49_nPWE
) = GPIO_bit(GPIO49_nPWE
);
112 GPSR(GPIO53_nPCE_2
) = GPIO_bit(GPIO53_nPCE_2
);
114 GPCR(GPIO53_nPCE_2
) = GPIO_bit(GPIO53_nPCE_2
);
115 GPSR(GPIO49_nPWE
) = GPIO_bit(GPIO49_nPWE
);
120 pxa_gpio_mode(GPIO49_nPWE_MD
);
125 static void cmx270_pcmcia_socket_init(struct soc_pcmcia_socket
*skt
)
129 static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket
*skt
)
134 static struct pcmcia_low_level cmx270_pcmcia_ops
= {
135 .owner
= THIS_MODULE
,
136 .hw_init
= cmx270_pcmcia_hw_init
,
137 .hw_shutdown
= cmx270_pcmcia_shutdown
,
138 .socket_state
= cmx270_pcmcia_socket_state
,
139 .configure_socket
= cmx270_pcmcia_configure_socket
,
140 .socket_init
= cmx270_pcmcia_socket_init
,
141 .socket_suspend
= cmx270_pcmcia_socket_suspend
,
145 static struct platform_device
*cmx270_pcmcia_device
;
147 static int __init
cmx270_pcmcia_init(void)
151 if (!machine_is_armcore())
154 cmx270_pcmcia_device
= platform_device_alloc("pxa2xx-pcmcia", -1);
156 if (!cmx270_pcmcia_device
)
159 cmx270_pcmcia_device
->dev
.platform_data
= &cmx270_pcmcia_ops
;
161 printk(KERN_INFO
"Registering cm-x270 PCMCIA interface.\n");
162 ret
= platform_device_add(cmx270_pcmcia_device
);
165 platform_device_put(cmx270_pcmcia_device
);
170 static void __exit
cmx270_pcmcia_exit(void)
172 platform_device_unregister(cmx270_pcmcia_device
);
175 module_init(cmx270_pcmcia_init
);
176 module_exit(cmx270_pcmcia_exit
);
178 MODULE_LICENSE("GPL");
179 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
180 MODULE_DESCRIPTION("CM-x270 PCMCIA driver");