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