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/config.h>
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/ioport.h>
12 #include <linux/device.h>
13 #include <linux/interrupt.h>
14 #include <linux/init.h>
15
16 #include <pcmcia/ss.h>
17
18 #include <asm/hardware.h>
19 #include <asm/hardware/sa1111.h>
20 #include <asm/io.h>
21 #include <asm/irq.h>
22
23 #include "sa1111_generic.h"
24
25 static struct pcmcia_irqs irqs[] = {
26 { 0, IRQ_S0_CD_VALID, "SA1111 PCMCIA card detect" },
27 { 0, IRQ_S0_BVD1_STSCHG, "SA1111 PCMCIA BVD1" },
28 { 1, IRQ_S1_CD_VALID, "SA1111 CF card detect" },
29 { 1, IRQ_S1_BVD1_STSCHG, "SA1111 CF BVD1" },
30 };
31
32 int sa1111_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
33 {
34 if (skt->irq == NO_IRQ)
35 skt->irq = skt->nr ? IRQ_S1_READY_NINT : IRQ_S0_READY_NINT;
36
37 return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
38 }
39
40 void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
41 {
42 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
43 }
44
45 void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
46 {
47 struct sa1111_dev *sadev = SA1111_DEV(skt->dev);
48 unsigned long status = sa1111_readl(sadev->mapbase + SA1111_PCSR);
49
50 switch (skt->nr) {
51 case 0:
52 state->detect = status & PCSR_S0_DETECT ? 0 : 1;
53 state->ready = status & PCSR_S0_READY ? 1 : 0;
54 state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0;
55 state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0;
56 state->wrprot = status & PCSR_S0_WP ? 1 : 0;
57 state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1;
58 state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1;
59 break;
60
61 case 1:
62 state->detect = status & PCSR_S1_DETECT ? 0 : 1;
63 state->ready = status & PCSR_S1_READY ? 1 : 0;
64 state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0;
65 state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0;
66 state->wrprot = status & PCSR_S1_WP ? 1 : 0;
67 state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1;
68 state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1;
69 break;
70 }
71 }
72
73 int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
74 {
75 struct sa1111_dev *sadev = SA1111_DEV(skt->dev);
76 unsigned int pccr_skt_mask, pccr_set_mask, val;
77 unsigned long flags;
78
79 switch (skt->nr) {
80 case 0:
81 pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE;
82 break;
83
84 case 1:
85 pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE;
86 break;
87
88 default:
89 return -1;
90 }
91
92 pccr_set_mask = 0;
93
94 if (state->Vcc != 0)
95 pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN;
96 if (state->Vcc == 50)
97 pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE;
98 if (state->flags & SS_RESET)
99 pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST;
100 if (state->flags & SS_OUTPUT_ENA)
101 pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT;
102
103 local_irq_save(flags);
104 val = sa1111_readl(sadev->mapbase + SA1111_PCCR);
105 val &= ~pccr_skt_mask;
106 val |= pccr_set_mask & pccr_skt_mask;
107 sa1111_writel(val, sadev->mapbase + SA1111_PCCR);
108 local_irq_restore(flags);
109
110 return 0;
111 }
112
113 void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
114 {
115 soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
116 }
117
118 void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
119 {
120 soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
121 }
122
123 static int pcmcia_probe(struct sa1111_dev *dev)
124 {
125 char *base;
126
127 if (!request_mem_region(dev->res.start, 512,
128 SA1111_DRIVER_NAME(dev)))
129 return -EBUSY;
130
131 base = dev->mapbase;
132
133 /*
134 * Initialise the suspend state.
135 */
136 sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + SA1111_PCSSR);
137 sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + SA1111_PCCR);
138
139 #ifdef CONFIG_SA1100_BADGE4
140 pcmcia_badge4_init(&dev->dev);
141 #endif
142 #ifdef CONFIG_SA1100_JORNADA720
143 pcmcia_jornada720_init(&dev->dev);
144 #endif
145 #ifdef CONFIG_ARCH_LUBBOCK
146 pcmcia_lubbock_init(dev);
147 #endif
148 #ifdef CONFIG_ASSABET_NEPONSET
149 pcmcia_neponset_init(dev);
150 #endif
151 return 0;
152 }
153
154 static int __devexit pcmcia_remove(struct sa1111_dev *dev)
155 {
156 soc_common_drv_pcmcia_remove(&dev->dev);
157 release_mem_region(dev->res.start, 512);
158 return 0;
159 }
160
161 static int pcmcia_suspend(struct sa1111_dev *dev, u32 state)
162 {
163 return pcmcia_socket_dev_suspend(&dev->dev, state);
164 }
165
166 static int pcmcia_resume(struct sa1111_dev *dev)
167 {
168 return pcmcia_socket_dev_resume(&dev->dev);
169 }
170
171 static struct sa1111_driver pcmcia_driver = {
172 .drv = {
173 .name = "sa1111-pcmcia",
174 },
175 .devid = SA1111_DEVID_PCMCIA,
176 .probe = pcmcia_probe,
177 .remove = __devexit_p(pcmcia_remove),
178 .suspend = pcmcia_suspend,
179 .resume = pcmcia_resume,
180 };
181
182 static int __init sa1111_drv_pcmcia_init(void)
183 {
184 return sa1111_driver_register(&pcmcia_driver);
185 }
186
187 static void __exit sa1111_drv_pcmcia_exit(void)
188 {
189 sa1111_driver_unregister(&pcmcia_driver);
190 }
191
192 module_init(sa1111_drv_pcmcia_init);
193 module_exit(sa1111_drv_pcmcia_exit);
194
195 MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
196 MODULE_LICENSE("GPL");
197
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