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1/*
2 * drivers/pcmcia/sa1100_assabet.c
3 *
4 * PCMCIA implementation routines for Assabet
5 *
6 */
7#include <linux/module.h>
8#include <linux/kernel.h>
9#include <linux/errno.h>
10#include <linux/interrupt.h>
11#include <linux/device.h>
12#include <linux/init.h>
13
14#include <mach/hardware.h>
15#include <asm/mach-types.h>
16#include <asm/irq.h>
17#include <asm/signal.h>
18#include <mach/assabet.h>
19
20#include "sa1100_generic.h"
21
22static struct pcmcia_irqs irqs[] = {
23 { 1, ASSABET_IRQ_GPIO_CF_CD, "CF CD" },
24 { 1, ASSABET_IRQ_GPIO_CF_BVD2, "CF BVD2" },
25 { 1, ASSABET_IRQ_GPIO_CF_BVD1, "CF BVD1" },
26};
27
28static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
29{
30 skt->socket.pci_irq = ASSABET_IRQ_GPIO_CF_IRQ;
31
32 return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
33}
34
35/*
36 * Release all resources.
37 */
38static void assabet_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
39{
40 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
41}
42
43static void
44assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
45{
46 unsigned long levels = GPLR;
47
48 state->detect = (levels & ASSABET_GPIO_CF_CD) ? 0 : 1;
49 state->ready = (levels & ASSABET_GPIO_CF_IRQ) ? 1 : 0;
50 state->bvd1 = (levels & ASSABET_GPIO_CF_BVD1) ? 1 : 0;
51 state->bvd2 = (levels & ASSABET_GPIO_CF_BVD2) ? 1 : 0;
52 state->wrprot = 0; /* Not available on Assabet. */
53 state->vs_3v = 1; /* Can only apply 3.3V on Assabet. */
54 state->vs_Xv = 0;
55}
56
57static int
58assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
59{
60 unsigned int mask;
61
62 switch (state->Vcc) {
63 case 0:
64 mask = 0;
65 break;
66
67 case 50:
68 printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
69 __func__);
70
71 case 33: /* Can only apply 3.3V to the CF slot. */
72 mask = ASSABET_BCR_CF_PWR;
73 break;
74
75 default:
76 printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__,
77 state->Vcc);
78 return -1;
79 }
80
81 /* Silently ignore Vpp, output enable, speaker enable. */
82
83 if (state->flags & SS_RESET)
84 mask |= ASSABET_BCR_CF_RST;
85
86 ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR, mask);
87
88 return 0;
89}
90
91/*
92 * Enable card status IRQs on (re-)initialisation. This can
93 * be called at initialisation, power management event, or
94 * pcmcia event.
95 */
96static void assabet_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
97{
98 /*
99 * Enable CF bus
100 */
101 ASSABET_BCR_clear(ASSABET_BCR_CF_BUS_OFF);
102
103 soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
104}
105
106/*
107 * Disable card status IRQs on suspend.
108 */
109static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
110{
111 soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
112
113 /*
114 * Tristate the CF bus signals. Also assert CF
115 * reset as per user guide page 4-11.
116 */
117 ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
118}
119
120static struct pcmcia_low_level assabet_pcmcia_ops = {
121 .owner = THIS_MODULE,
122
123 .hw_init = assabet_pcmcia_hw_init,
124 .hw_shutdown = assabet_pcmcia_hw_shutdown,
125
126 .socket_state = assabet_pcmcia_socket_state,
127 .configure_socket = assabet_pcmcia_configure_socket,
128
129 .socket_init = assabet_pcmcia_socket_init,
130 .socket_suspend = assabet_pcmcia_socket_suspend,
131};
132
133int __devinit pcmcia_assabet_init(struct device *dev)
134{
135 int ret = -ENODEV;
136
137 if (machine_is_assabet() && !machine_has_neponset())
138 ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
139
140 return ret;
141}
1/*
2 * drivers/pcmcia/sa1100_assabet.c
3 *
4 * PCMCIA implementation routines for Assabet
5 *
6 */
7#include <linux/module.h>
8#include <linux/kernel.h>
9#include <linux/errno.h>
10#include <linux/interrupt.h>
11#include <linux/device.h>
12#include <linux/init.h>
13#include <linux/gpio.h>
14
15#include <asm/mach-types.h>
16#include <mach/assabet.h>
17
18#include "sa1100_generic.h"
19
20static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
21{
22 skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD;
23 skt->stat[SOC_STAT_CD].name = "CF CD";
24 skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1;
25 skt->stat[SOC_STAT_BVD1].name = "CF BVD1";
26 skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2;
27 skt->stat[SOC_STAT_BVD2].name = "CF BVD2";
28 skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ;
29 skt->stat[SOC_STAT_RDY].name = "CF RDY";
30
31 return 0;
32}
33
34static void
35assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
36{
37 state->vs_3v = 1; /* Can only apply 3.3V on Assabet. */
38 state->vs_Xv = 0;
39}
40
41static int
42assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
43{
44 unsigned int mask;
45
46 switch (state->Vcc) {
47 case 0:
48 mask = 0;
49 break;
50
51 case 50:
52 printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
53 __func__);
54
55 case 33: /* Can only apply 3.3V to the CF slot. */
56 mask = ASSABET_BCR_CF_PWR;
57 break;
58
59 default:
60 printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__,
61 state->Vcc);
62 return -1;
63 }
64
65 /* Silently ignore Vpp, speaker enable. */
66
67 if (state->flags & SS_RESET)
68 mask |= ASSABET_BCR_CF_RST;
69 if (!(state->flags & SS_OUTPUT_ENA))
70 mask |= ASSABET_BCR_CF_BUS_OFF;
71
72 ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR |
73 ASSABET_BCR_CF_BUS_OFF, mask);
74
75 return 0;
76}
77
78/*
79 * Disable card status IRQs on suspend.
80 */
81static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
82{
83 /*
84 * Tristate the CF bus signals. Also assert CF
85 * reset as per user guide page 4-11.
86 */
87 ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
88}
89
90static struct pcmcia_low_level assabet_pcmcia_ops = {
91 .owner = THIS_MODULE,
92 .hw_init = assabet_pcmcia_hw_init,
93 .socket_state = assabet_pcmcia_socket_state,
94 .configure_socket = assabet_pcmcia_configure_socket,
95 .socket_suspend = assabet_pcmcia_socket_suspend,
96};
97
98int __devinit pcmcia_assabet_init(struct device *dev)
99{
100 int ret = -ENODEV;
101
102 if (machine_is_assabet() && !machine_has_neponset())
103 ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
104
105 return ret;
106}