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87944f33 MR |
1 | /* |
2 | * linux/drivers/pcmcia/pxa/pxa_cm_x270.c | |
3 | * | |
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. | |
7 | * | |
8 | * Compulab Ltd., 2003, 2007 | |
9 | * Mike Rapoport <mike@compulab.co.il> | |
10 | * | |
11 | */ | |
12 | ||
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> | |
18 | ||
19 | #include <pcmcia/ss.h> | |
20 | #include <asm/hardware.h> | |
21 | ||
22 | #include <asm/arch/pxa-regs.h> | |
a683b14d | 23 | #include <asm/arch/pxa2xx-gpio.h> |
87944f33 MR |
24 | #include <asm/arch/cm-x270.h> |
25 | ||
26 | #include "soc_common.h" | |
27 | ||
28 | static struct pcmcia_irqs irqs[] = { | |
29 | { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" }, | |
30 | { 1, PCMCIA_S1_CD_VALID, "PCMCIA1 CD" }, | |
31 | }; | |
32 | ||
33 | static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
34 | { | |
35 | GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) | | |
36 | GPIO_bit(GPIO49_nPWE) | | |
37 | GPIO_bit(GPIO50_nPIOR) | | |
38 | GPIO_bit(GPIO51_nPIOW) | | |
39 | GPIO_bit(GPIO85_nPCE_1) | | |
40 | GPIO_bit(GPIO54_nPCE_2); | |
41 | ||
42 | pxa_gpio_mode(GPIO48_nPOE_MD); | |
43 | pxa_gpio_mode(GPIO49_nPWE_MD); | |
44 | pxa_gpio_mode(GPIO50_nPIOR_MD); | |
45 | pxa_gpio_mode(GPIO51_nPIOW_MD); | |
46 | pxa_gpio_mode(GPIO85_nPCE_1_MD); | |
47 | pxa_gpio_mode(GPIO54_nPCE_2_MD); | |
48 | pxa_gpio_mode(GPIO55_nPREG_MD); | |
49 | pxa_gpio_mode(GPIO56_nPWAIT_MD); | |
50 | pxa_gpio_mode(GPIO57_nIOIS16_MD); | |
51 | ||
52 | /* Reset signal */ | |
53 | pxa_gpio_mode(GPIO53_nPCE_2 | GPIO_OUT); | |
54 | GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); | |
55 | ||
56 | set_irq_type(PCMCIA_S0_CD_VALID, IRQ_TYPE_EDGE_BOTH); | |
57 | set_irq_type(PCMCIA_S1_CD_VALID, IRQ_TYPE_EDGE_BOTH); | |
58 | ||
59 | /* irq's for slots: */ | |
60 | set_irq_type(PCMCIA_S0_RDYINT, IRQ_TYPE_EDGE_FALLING); | |
61 | set_irq_type(PCMCIA_S1_RDYINT, IRQ_TYPE_EDGE_FALLING); | |
62 | ||
63 | skt->irq = (skt->nr == 0) ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT; | |
64 | return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
65 | } | |
66 | ||
67 | static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt) | |
68 | { | |
69 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
70 | ||
71 | set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_CD_VALID), IRQ_TYPE_NONE); | |
72 | set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_CD_VALID), IRQ_TYPE_NONE); | |
73 | ||
74 | set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_RDYINT), IRQ_TYPE_NONE); | |
75 | set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_RDYINT), IRQ_TYPE_NONE); | |
76 | } | |
77 | ||
78 | ||
79 | static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
80 | struct pcmcia_state *state) | |
81 | { | |
82 | state->detect = (PCC_DETECT(skt->nr) == 0) ? 1 : 0; | |
83 | state->ready = (PCC_READY(skt->nr) == 0) ? 0 : 1; | |
84 | state->bvd1 = 1; | |
85 | state->bvd2 = 1; | |
86 | state->vs_3v = 0; | |
87 | state->vs_Xv = 0; | |
88 | state->wrprot = 0; /* not available */ | |
89 | } | |
90 | ||
91 | ||
92 | static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
93 | const socket_state_t *state) | |
94 | { | |
95 | GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); | |
96 | pxa_gpio_mode(GPIO49_nPWE | GPIO_OUT); | |
97 | ||
98 | switch (skt->nr) { | |
99 | case 0: | |
100 | if (state->flags & SS_RESET) { | |
101 | GPCR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); | |
102 | GPSR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); | |
103 | udelay(10); | |
104 | GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); | |
105 | GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); | |
106 | } | |
107 | break; | |
108 | case 1: | |
109 | if (state->flags & SS_RESET) { | |
110 | GPCR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); | |
111 | GPSR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); | |
112 | udelay(10); | |
113 | GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); | |
114 | GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); | |
115 | } | |
116 | break; | |
117 | } | |
118 | ||
119 | pxa_gpio_mode(GPIO49_nPWE_MD); | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | static void cmx270_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
125 | { | |
126 | } | |
127 | ||
128 | static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
129 | { | |
130 | } | |
131 | ||
132 | ||
133 | static struct pcmcia_low_level cmx270_pcmcia_ops = { | |
134 | .owner = THIS_MODULE, | |
135 | .hw_init = cmx270_pcmcia_hw_init, | |
136 | .hw_shutdown = cmx270_pcmcia_shutdown, | |
137 | .socket_state = cmx270_pcmcia_socket_state, | |
138 | .configure_socket = cmx270_pcmcia_configure_socket, | |
139 | .socket_init = cmx270_pcmcia_socket_init, | |
140 | .socket_suspend = cmx270_pcmcia_socket_suspend, | |
141 | .nr = 2, | |
142 | }; | |
143 | ||
144 | static struct platform_device *cmx270_pcmcia_device; | |
145 | ||
146 | static int __init cmx270_pcmcia_init(void) | |
147 | { | |
148 | int ret; | |
149 | ||
150 | cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
151 | ||
152 | if (!cmx270_pcmcia_device) | |
153 | return -ENOMEM; | |
154 | ||
155 | cmx270_pcmcia_device->dev.platform_data = &cmx270_pcmcia_ops; | |
156 | ||
157 | printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n"); | |
158 | ret = platform_device_add(cmx270_pcmcia_device); | |
159 | ||
160 | if (ret) | |
161 | platform_device_put(cmx270_pcmcia_device); | |
162 | ||
163 | return ret; | |
164 | } | |
165 | ||
166 | static void __exit cmx270_pcmcia_exit(void) | |
167 | { | |
168 | platform_device_unregister(cmx270_pcmcia_device); | |
169 | } | |
170 | ||
171 | module_init(cmx270_pcmcia_init); | |
172 | module_exit(cmx270_pcmcia_exit); | |
173 | ||
174 | MODULE_LICENSE("GPL"); | |
175 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); | |
176 | MODULE_DESCRIPTION("CM-x270 PCMCIA driver"); |