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1da177e4 LT |
1 | /* |
2 | * linux/drivers/pcmcia/sa1111_generic.c | |
3 | * | |
4 | * We implement the generic parts of a SA1111 PCMCIA driver. This | |
5 | * basically means we handle everything except controlling the | |
6 | * power. Power is machine specific... | |
7 | */ | |
1da177e4 LT |
8 | #include <linux/module.h> |
9 | #include <linux/kernel.h> | |
10 | #include <linux/ioport.h> | |
11 | #include <linux/device.h> | |
12 | #include <linux/interrupt.h> | |
13 | #include <linux/init.h> | |
99730225 | 14 | #include <linux/io.h> |
1da177e4 LT |
15 | |
16 | #include <pcmcia/ss.h> | |
17 | ||
a09e64fb | 18 | #include <mach/hardware.h> |
1da177e4 | 19 | #include <asm/hardware/sa1111.h> |
1da177e4 LT |
20 | #include <asm/irq.h> |
21 | ||
22 | #include "sa1111_generic.h" | |
23 | ||
08fa1590 EM |
24 | #define IDX_IRQ_S0_READY_NINT (0) |
25 | #define IDX_IRQ_S0_CD_VALID (1) | |
26 | #define IDX_IRQ_S0_BVD1_STSCHG (2) | |
27 | #define IDX_IRQ_S1_READY_NINT (3) | |
28 | #define IDX_IRQ_S1_CD_VALID (4) | |
29 | #define IDX_IRQ_S1_BVD1_STSCHG (5) | |
30 | ||
1da177e4 | 31 | static struct pcmcia_irqs irqs[] = { |
08fa1590 EM |
32 | { 0, NO_IRQ, "SA1111 PCMCIA card detect" }, |
33 | { 0, NO_IRQ, "SA1111 PCMCIA BVD1" }, | |
34 | { 1, NO_IRQ, "SA1111 CF card detect" }, | |
35 | { 1, NO_IRQ, "SA1111 CF BVD1" }, | |
1da177e4 LT |
36 | }; |
37 | ||
dabd1468 | 38 | static int sa1111_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
1da177e4 | 39 | { |
1da177e4 LT |
40 | return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
41 | } | |
42 | ||
dabd1468 | 43 | static void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
1da177e4 LT |
44 | { |
45 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
46 | } | |
47 | ||
48 | void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) | |
49 | { | |
701a5dc0 RKAL |
50 | struct sa1111_pcmcia_socket *s = to_skt(skt); |
51 | unsigned long status = sa1111_readl(s->dev->mapbase + SA1111_PCSR); | |
1da177e4 LT |
52 | |
53 | switch (skt->nr) { | |
54 | case 0: | |
55 | state->detect = status & PCSR_S0_DETECT ? 0 : 1; | |
56 | state->ready = status & PCSR_S0_READY ? 1 : 0; | |
57 | state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0; | |
58 | state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0; | |
59 | state->wrprot = status & PCSR_S0_WP ? 1 : 0; | |
60 | state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1; | |
61 | state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1; | |
62 | break; | |
63 | ||
64 | case 1: | |
65 | state->detect = status & PCSR_S1_DETECT ? 0 : 1; | |
66 | state->ready = status & PCSR_S1_READY ? 1 : 0; | |
67 | state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0; | |
68 | state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0; | |
69 | state->wrprot = status & PCSR_S1_WP ? 1 : 0; | |
70 | state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1; | |
71 | state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1; | |
72 | break; | |
73 | } | |
74 | } | |
75 | ||
76 | int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
77 | { | |
701a5dc0 | 78 | struct sa1111_pcmcia_socket *s = to_skt(skt); |
1da177e4 LT |
79 | unsigned int pccr_skt_mask, pccr_set_mask, val; |
80 | unsigned long flags; | |
81 | ||
82 | switch (skt->nr) { | |
83 | case 0: | |
84 | pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE; | |
85 | break; | |
86 | ||
87 | case 1: | |
88 | pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE; | |
89 | break; | |
90 | ||
91 | default: | |
92 | return -1; | |
93 | } | |
94 | ||
95 | pccr_set_mask = 0; | |
96 | ||
97 | if (state->Vcc != 0) | |
98 | pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN; | |
99 | if (state->Vcc == 50) | |
100 | pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE; | |
101 | if (state->flags & SS_RESET) | |
102 | pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST; | |
103 | if (state->flags & SS_OUTPUT_ENA) | |
104 | pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT; | |
105 | ||
106 | local_irq_save(flags); | |
701a5dc0 | 107 | val = sa1111_readl(s->dev->mapbase + SA1111_PCCR); |
1da177e4 LT |
108 | val &= ~pccr_skt_mask; |
109 | val |= pccr_set_mask & pccr_skt_mask; | |
701a5dc0 | 110 | sa1111_writel(val, s->dev->mapbase + SA1111_PCCR); |
1da177e4 LT |
111 | local_irq_restore(flags); |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
117 | { | |
118 | soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
119 | } | |
120 | ||
dabd1468 | 121 | static void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
1da177e4 LT |
122 | { |
123 | soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
124 | } | |
125 | ||
701a5dc0 RKAL |
126 | int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops, |
127 | int (*add)(struct soc_pcmcia_socket *)) | |
128 | { | |
129 | struct sa1111_pcmcia_socket *s; | |
130 | int i, ret = 0; | |
131 | ||
dabd1468 RKAL |
132 | ops->hw_init = sa1111_pcmcia_hw_init; |
133 | ops->hw_shutdown = sa1111_pcmcia_hw_shutdown; | |
134 | ops->socket_state = sa1111_pcmcia_socket_state; | |
135 | ops->socket_suspend = sa1111_pcmcia_socket_suspend; | |
136 | ||
701a5dc0 RKAL |
137 | for (i = 0; i < ops->nr; i++) { |
138 | s = kzalloc(sizeof(*s), GFP_KERNEL); | |
139 | if (!s) | |
140 | return -ENOMEM; | |
141 | ||
142 | s->soc.nr = ops->first + i; | |
701a5dc0 RKAL |
143 | s->soc.ops = ops; |
144 | s->soc.socket.owner = ops->owner; | |
145 | s->soc.socket.dev.parent = &dev->dev; | |
08fa1590 EM |
146 | s->soc.socket.pci_irq = s->soc.nr ? |
147 | dev->irq[IDX_IRQ_S0_READY_NINT] : | |
148 | dev->irq[IDX_IRQ_S1_READY_NINT]; | |
701a5dc0 RKAL |
149 | s->dev = dev; |
150 | ||
151 | ret = add(&s->soc); | |
152 | if (ret == 0) { | |
153 | s->next = dev_get_drvdata(&dev->dev); | |
154 | dev_set_drvdata(&dev->dev, s); | |
155 | } else | |
156 | kfree(s); | |
157 | } | |
158 | ||
159 | return ret; | |
160 | } | |
161 | ||
1da177e4 LT |
162 | static int pcmcia_probe(struct sa1111_dev *dev) |
163 | { | |
f339ab3d | 164 | void __iomem *base; |
1da177e4 | 165 | |
701a5dc0 RKAL |
166 | dev_set_drvdata(&dev->dev, NULL); |
167 | ||
1da177e4 LT |
168 | if (!request_mem_region(dev->res.start, 512, |
169 | SA1111_DRIVER_NAME(dev))) | |
170 | return -EBUSY; | |
171 | ||
172 | base = dev->mapbase; | |
173 | ||
08fa1590 EM |
174 | /* Initialize PCMCIA IRQs */ |
175 | irqs[0].irq = dev->irq[IDX_IRQ_S0_CD_VALID]; | |
176 | irqs[1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG]; | |
177 | irqs[2].irq = dev->irq[IDX_IRQ_S1_CD_VALID]; | |
178 | irqs[3].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG]; | |
179 | ||
1da177e4 LT |
180 | /* |
181 | * Initialise the suspend state. | |
182 | */ | |
183 | sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + SA1111_PCSSR); | |
184 | sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + SA1111_PCCR); | |
185 | ||
186 | #ifdef CONFIG_SA1100_BADGE4 | |
187 | pcmcia_badge4_init(&dev->dev); | |
188 | #endif | |
189 | #ifdef CONFIG_SA1100_JORNADA720 | |
190 | pcmcia_jornada720_init(&dev->dev); | |
191 | #endif | |
192 | #ifdef CONFIG_ARCH_LUBBOCK | |
193 | pcmcia_lubbock_init(dev); | |
194 | #endif | |
195 | #ifdef CONFIG_ASSABET_NEPONSET | |
196 | pcmcia_neponset_init(dev); | |
197 | #endif | |
198 | return 0; | |
199 | } | |
200 | ||
201 | static int __devexit pcmcia_remove(struct sa1111_dev *dev) | |
202 | { | |
701a5dc0 | 203 | struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev); |
be85458e RKAL |
204 | |
205 | dev_set_drvdata(&dev->dev, NULL); | |
206 | ||
701a5dc0 RKAL |
207 | for (; next = s->next, s; s = next) { |
208 | soc_pcmcia_remove_one(&s->soc); | |
209 | kfree(s); | |
210 | } | |
be85458e | 211 | |
1da177e4 LT |
212 | release_mem_region(dev->res.start, 512); |
213 | return 0; | |
214 | } | |
215 | ||
1da177e4 LT |
216 | static struct sa1111_driver pcmcia_driver = { |
217 | .drv = { | |
218 | .name = "sa1111-pcmcia", | |
219 | }, | |
220 | .devid = SA1111_DEVID_PCMCIA, | |
221 | .probe = pcmcia_probe, | |
222 | .remove = __devexit_p(pcmcia_remove), | |
1da177e4 LT |
223 | }; |
224 | ||
225 | static int __init sa1111_drv_pcmcia_init(void) | |
226 | { | |
227 | return sa1111_driver_register(&pcmcia_driver); | |
228 | } | |
229 | ||
230 | static void __exit sa1111_drv_pcmcia_exit(void) | |
231 | { | |
232 | sa1111_driver_unregister(&pcmcia_driver); | |
233 | } | |
234 | ||
f36598ae | 235 | fs_initcall(sa1111_drv_pcmcia_init); |
1da177e4 LT |
236 | module_exit(sa1111_drv_pcmcia_exit); |
237 | ||
238 | MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver"); | |
239 | MODULE_LICENSE("GPL"); |