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
15#include <pcmcia/ss.h>
16
17#include <asm/hardware.h>
18#include <asm/hardware/sa1111.h>
19#include <asm/io.h>
20#include <asm/irq.h>
21
22#include "sa1111_generic.h"
23
24static 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
31int 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
39void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
40{
41	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
42}
43
44void 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
72int 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
112void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
113{
114	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
115}
116
117void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
118{
119	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
120}
121
122static 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
153static 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
160static int pcmcia_suspend(struct sa1111_dev *dev, pm_message_t state)
161{
162	return pcmcia_socket_dev_suspend(&dev->dev, state);
163}
164
165static int pcmcia_resume(struct sa1111_dev *dev)
166{
167	return pcmcia_socket_dev_resume(&dev->dev);
168}
169
170static 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
181static int __init sa1111_drv_pcmcia_init(void)
182{
183	return sa1111_driver_register(&pcmcia_driver);
184}
185
186static void __exit sa1111_drv_pcmcia_exit(void)
187{
188	sa1111_driver_unregister(&pcmcia_driver);
189}
190
191fs_initcall(sa1111_drv_pcmcia_init);
192module_exit(sa1111_drv_pcmcia_exit);
193
194MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
195MODULE_LICENSE("GPL");
196