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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 | */ |
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> |
14 | #include <linux/io.h> |
15 | #include <linux/slab.h> |
16 | |
17 | #include <pcmcia/ss.h> |
18 | |
19 | #include <mach/hardware.h> |
20 | #include <asm/hardware/sa1111.h> |
21 | #include <asm/irq.h> |
22 | |
23 | #include "sa1111_generic.h" |
24 | |
25 | /* |
26 | * These are offsets from the above base. |
27 | */ |
28 | #define PCCR 0x0000 |
29 | #define PCSSR 0x0004 |
30 | #define PCSR 0x0008 |
31 | |
32 | #define PCSR_S0_READY (1<<0) |
33 | #define PCSR_S1_READY (1<<1) |
34 | #define PCSR_S0_DETECT (1<<2) |
35 | #define PCSR_S1_DETECT (1<<3) |
36 | #define PCSR_S0_VS1 (1<<4) |
37 | #define PCSR_S0_VS2 (1<<5) |
38 | #define PCSR_S1_VS1 (1<<6) |
39 | #define PCSR_S1_VS2 (1<<7) |
40 | #define PCSR_S0_WP (1<<8) |
41 | #define PCSR_S1_WP (1<<9) |
42 | #define PCSR_S0_BVD1 (1<<10) |
43 | #define PCSR_S0_BVD2 (1<<11) |
44 | #define PCSR_S1_BVD1 (1<<12) |
45 | #define PCSR_S1_BVD2 (1<<13) |
46 | |
47 | #define PCCR_S0_RST (1<<0) |
48 | #define PCCR_S1_RST (1<<1) |
49 | #define PCCR_S0_FLT (1<<2) |
50 | #define PCCR_S1_FLT (1<<3) |
51 | #define PCCR_S0_PWAITEN (1<<4) |
52 | #define PCCR_S1_PWAITEN (1<<5) |
53 | #define PCCR_S0_PSE (1<<6) |
54 | #define PCCR_S1_PSE (1<<7) |
55 | |
56 | #define PCSSR_S0_SLEEP (1<<0) |
57 | #define PCSSR_S1_SLEEP (1<<1) |
58 | |
59 | #define IDX_IRQ_S0_READY_NINT (0) |
60 | #define IDX_IRQ_S0_CD_VALID (1) |
61 | #define IDX_IRQ_S0_BVD1_STSCHG (2) |
62 | #define IDX_IRQ_S1_READY_NINT (3) |
63 | #define IDX_IRQ_S1_CD_VALID (4) |
64 | #define IDX_IRQ_S1_BVD1_STSCHG (5) |
65 | |
66 | void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) |
67 | { |
68 | struct sa1111_pcmcia_socket *s = to_skt(skt); |
69 | unsigned long status = sa1111_readl(s->dev->mapbase + PCSR); |
70 | |
71 | switch (skt->nr) { |
72 | case 0: |
73 | state->detect = status & PCSR_S0_DETECT ? 0 : 1; |
74 | state->ready = status & PCSR_S0_READY ? 1 : 0; |
75 | state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0; |
76 | state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0; |
77 | state->wrprot = status & PCSR_S0_WP ? 1 : 0; |
78 | state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1; |
79 | state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1; |
80 | break; |
81 | |
82 | case 1: |
83 | state->detect = status & PCSR_S1_DETECT ? 0 : 1; |
84 | state->ready = status & PCSR_S1_READY ? 1 : 0; |
85 | state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0; |
86 | state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0; |
87 | state->wrprot = status & PCSR_S1_WP ? 1 : 0; |
88 | state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1; |
89 | state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1; |
90 | break; |
91 | } |
92 | } |
93 | |
94 | int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) |
95 | { |
96 | struct sa1111_pcmcia_socket *s = to_skt(skt); |
97 | unsigned int pccr_skt_mask, pccr_set_mask, val; |
98 | unsigned long flags; |
99 | |
100 | switch (skt->nr) { |
101 | case 0: |
102 | pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE; |
103 | break; |
104 | |
105 | case 1: |
106 | pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE; |
107 | break; |
108 | |
109 | default: |
110 | return -1; |
111 | } |
112 | |
113 | pccr_set_mask = 0; |
114 | |
115 | if (state->Vcc != 0) |
116 | pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN; |
117 | if (state->Vcc == 50) |
118 | pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE; |
119 | if (state->flags & SS_RESET) |
120 | pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST; |
121 | if (state->flags & SS_OUTPUT_ENA) |
122 | pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT; |
123 | |
124 | local_irq_save(flags); |
125 | val = sa1111_readl(s->dev->mapbase + PCCR); |
126 | val &= ~pccr_skt_mask; |
127 | val |= pccr_set_mask & pccr_skt_mask; |
128 | sa1111_writel(val, s->dev->mapbase + PCCR); |
129 | local_irq_restore(flags); |
130 | |
131 | return 0; |
132 | } |
133 | |
134 | int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops, |
135 | int (*add)(struct soc_pcmcia_socket *)) |
136 | { |
137 | struct sa1111_pcmcia_socket *s; |
138 | int i, ret = 0; |
139 | |
140 | ops->socket_state = sa1111_pcmcia_socket_state; |
141 | |
142 | for (i = 0; i < ops->nr; i++) { |
143 | s = kzalloc(sizeof(*s), GFP_KERNEL); |
144 | if (!s) |
145 | return -ENOMEM; |
146 | |
147 | s->soc.nr = ops->first + i; |
148 | soc_pcmcia_init_one(&s->soc, ops, &dev->dev); |
149 | s->dev = dev; |
150 | if (s->soc.nr) { |
151 | s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S1_READY_NINT]; |
152 | s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S1_CD_VALID]; |
153 | s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect"; |
154 | s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG]; |
155 | s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1"; |
156 | } else { |
157 | s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S0_READY_NINT]; |
158 | s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S0_CD_VALID]; |
159 | s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect"; |
160 | s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG]; |
161 | s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1"; |
162 | } |
163 | |
164 | ret = add(&s->soc); |
165 | if (ret == 0) { |
166 | s->next = dev_get_drvdata(&dev->dev); |
167 | dev_set_drvdata(&dev->dev, s); |
168 | } else |
169 | kfree(s); |
170 | } |
171 | |
172 | return ret; |
173 | } |
174 | |
175 | static int pcmcia_probe(struct sa1111_dev *dev) |
176 | { |
177 | void __iomem *base; |
178 | int ret; |
179 | |
180 | ret = sa1111_enable_device(dev); |
181 | if (ret) |
182 | return ret; |
183 | |
184 | dev_set_drvdata(&dev->dev, NULL); |
185 | |
186 | if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) { |
187 | sa1111_disable_device(dev); |
188 | return -EBUSY; |
189 | } |
190 | |
191 | base = dev->mapbase; |
192 | |
193 | /* |
194 | * Initialise the suspend state. |
195 | */ |
196 | sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR); |
197 | sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR); |
198 | |
199 | #ifdef CONFIG_SA1100_BADGE4 |
200 | pcmcia_badge4_init(&dev->dev); |
201 | #endif |
202 | #ifdef CONFIG_SA1100_JORNADA720 |
203 | pcmcia_jornada720_init(&dev->dev); |
204 | #endif |
205 | #ifdef CONFIG_ARCH_LUBBOCK |
206 | pcmcia_lubbock_init(dev); |
207 | #endif |
208 | #ifdef CONFIG_ASSABET_NEPONSET |
209 | pcmcia_neponset_init(dev); |
210 | #endif |
211 | return 0; |
212 | } |
213 | |
214 | static int pcmcia_remove(struct sa1111_dev *dev) |
215 | { |
216 | struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev); |
217 | |
218 | dev_set_drvdata(&dev->dev, NULL); |
219 | |
220 | for (; s; s = next) { |
221 | next = s->next; |
222 | soc_pcmcia_remove_one(&s->soc); |
223 | kfree(s); |
224 | } |
225 | |
226 | release_mem_region(dev->res.start, 512); |
227 | sa1111_disable_device(dev); |
228 | return 0; |
229 | } |
230 | |
231 | static struct sa1111_driver pcmcia_driver = { |
232 | .drv = { |
233 | .name = "sa1111-pcmcia", |
234 | }, |
235 | .devid = SA1111_DEVID_PCMCIA, |
236 | .probe = pcmcia_probe, |
237 | .remove = pcmcia_remove, |
238 | }; |
239 | |
240 | static int __init sa1111_drv_pcmcia_init(void) |
241 | { |
242 | return sa1111_driver_register(&pcmcia_driver); |
243 | } |
244 | |
245 | static void __exit sa1111_drv_pcmcia_exit(void) |
246 | { |
247 | sa1111_driver_unregister(&pcmcia_driver); |
248 | } |
249 | |
250 | fs_initcall(sa1111_drv_pcmcia_init); |
251 | module_exit(sa1111_drv_pcmcia_exit); |
252 | |
253 | MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver"); |
254 | MODULE_LICENSE("GPL"); |
255 |
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