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1/*
2 * Viper/Zeus PCMCIA support
3 * Copyright 2004 Arcom Control Systems
4 *
5 * Maintained by Marc Zyngier <maz@misterjones.org>
6 *
7 * Based on:
8 * iPAQ h2200 PCMCIA support
9 * Copyright 2004 Koen Kooi <koen@vestingbar.nl>
10 *
11 * This file is subject to the terms and conditions of the GNU General Public
12 * License. See the file COPYING in the main directory of this archive for
13 * more details.
14 */
15
16#include <linux/module.h>
17#include <linux/init.h>
18#include <linux/kernel.h>
19#include <linux/errno.h>
20#include <linux/interrupt.h>
21#include <linux/platform_device.h>
22#include <linux/gpio.h>
23
24#include <pcmcia/ss.h>
25
26#include <asm/irq.h>
27
28#include <mach/arcom-pcmcia.h>
29
30#include "soc_common.h"
31#include "pxa2xx_base.h"
32
33static struct platform_device *arcom_pcmcia_dev;
34
35static struct pcmcia_irqs irqs[] = {
36 {
37 .sock = 0,
38 .str = "PCMCIA_CD",
39 },
40};
41
42static inline struct arcom_pcmcia_pdata *viper_get_pdata(void)
43{
44 return arcom_pcmcia_dev->dev.platform_data;
45}
46
47static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
48{
49 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
50 unsigned long flags;
51
52 skt->socket.pci_irq = gpio_to_irq(pdata->rdy_gpio);
53 irqs[0].irq = gpio_to_irq(pdata->cd_gpio);
54
55 if (gpio_request(pdata->cd_gpio, "CF detect"))
56 goto err_request_cd;
57
58 if (gpio_request(pdata->rdy_gpio, "CF ready"))
59 goto err_request_rdy;
60
61 if (gpio_request(pdata->pwr_gpio, "CF power"))
62 goto err_request_pwr;
63
64 local_irq_save(flags);
65
66 if (gpio_direction_output(pdata->pwr_gpio, 0) ||
67 gpio_direction_input(pdata->cd_gpio) ||
68 gpio_direction_input(pdata->rdy_gpio)) {
69 local_irq_restore(flags);
70 goto err_dir;
71 }
72
73 local_irq_restore(flags);
74
75 return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
76
77err_dir:
78 gpio_free(pdata->pwr_gpio);
79err_request_pwr:
80 gpio_free(pdata->rdy_gpio);
81err_request_rdy:
82 gpio_free(pdata->cd_gpio);
83err_request_cd:
84 dev_err(&arcom_pcmcia_dev->dev, "Failed to setup PCMCIA GPIOs\n");
85 return -1;
86}
87
88/*
89 * Release all resources.
90 */
91static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
92{
93 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
94
95 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
96 gpio_free(pdata->pwr_gpio);
97 gpio_free(pdata->rdy_gpio);
98 gpio_free(pdata->cd_gpio);
99}
100
101static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
102 struct pcmcia_state *state)
103{
104 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
105
106 state->detect = !gpio_get_value(pdata->cd_gpio);
107 state->ready = !!gpio_get_value(pdata->rdy_gpio);
108 state->bvd1 = 1;
109 state->bvd2 = 1;
110 state->wrprot = 0;
111 state->vs_3v = 1; /* Can only apply 3.3V */
112 state->vs_Xv = 0;
113}
114
115static int viper_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
116 const socket_state_t *state)
117{
118 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
119
120 /* Silently ignore Vpp, output enable, speaker enable. */
121 pdata->reset(state->flags & SS_RESET);
122
123 /* Apply socket voltage */
124 switch (state->Vcc) {
125 case 0:
126 gpio_set_value(pdata->pwr_gpio, 0);
127 break;
128 case 33:
129 gpio_set_value(pdata->pwr_gpio, 1);
130 break;
131 default:
132 dev_err(&arcom_pcmcia_dev->dev, "Unsupported Vcc:%d\n", state->Vcc);
133 return -1;
134 }
135
136 return 0;
137}
138
139static struct pcmcia_low_level viper_pcmcia_ops = {
140 .owner = THIS_MODULE,
141 .hw_init = viper_pcmcia_hw_init,
142 .hw_shutdown = viper_pcmcia_hw_shutdown,
143 .socket_state = viper_pcmcia_socket_state,
144 .configure_socket = viper_pcmcia_configure_socket,
145 .nr = 1,
146};
147
148static struct platform_device *viper_pcmcia_device;
149
150static int viper_pcmcia_probe(struct platform_device *pdev)
151{
152 int ret;
153
154 /* I can't imagine more than one device, but you never know... */
155 if (arcom_pcmcia_dev)
156 return -EEXIST;
157
158 if (!pdev->dev.platform_data)
159 return -EINVAL;
160
161 viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
162 if (!viper_pcmcia_device)
163 return -ENOMEM;
164
165 arcom_pcmcia_dev = pdev;
166
167 viper_pcmcia_device->dev.parent = &pdev->dev;
168
169 ret = platform_device_add_data(viper_pcmcia_device,
170 &viper_pcmcia_ops,
171 sizeof(viper_pcmcia_ops));
172
173 if (!ret)
174 ret = platform_device_add(viper_pcmcia_device);
175
176 if (ret) {
177 platform_device_put(viper_pcmcia_device);
178 arcom_pcmcia_dev = NULL;
179 }
180
181 return ret;
182}
183
184static int viper_pcmcia_remove(struct platform_device *pdev)
185{
186 platform_device_unregister(viper_pcmcia_device);
187 arcom_pcmcia_dev = NULL;
188 return 0;
189}
190
191static struct platform_device_id viper_pcmcia_id_table[] = {
192 { .name = "viper-pcmcia", },
193 { .name = "zeus-pcmcia", },
194 { },
195};
196
197static struct platform_driver viper_pcmcia_driver = {
198 .probe = viper_pcmcia_probe,
199 .remove = viper_pcmcia_remove,
200 .driver = {
201 .name = "arcom-pcmcia",
202 .owner = THIS_MODULE,
203 },
204 .id_table = viper_pcmcia_id_table,
205};
206
207static int __init viper_pcmcia_init(void)
208{
209 return platform_driver_register(&viper_pcmcia_driver);
210}
211
212static void __exit viper_pcmcia_exit(void)
213{
214 return platform_driver_unregister(&viper_pcmcia_driver);
215}
216
217module_init(viper_pcmcia_init);
218module_exit(viper_pcmcia_exit);
219
220MODULE_DEVICE_TABLE(platform, viper_pcmcia_id_table);
221MODULE_LICENSE("GPL");
1/*
2 * Viper/Zeus PCMCIA support
3 * Copyright 2004 Arcom Control Systems
4 *
5 * Maintained by Marc Zyngier <maz@misterjones.org>
6 *
7 * Based on:
8 * iPAQ h2200 PCMCIA support
9 * Copyright 2004 Koen Kooi <koen@vestingbar.nl>
10 *
11 * This file is subject to the terms and conditions of the GNU General Public
12 * License. See the file COPYING in the main directory of this archive for
13 * more details.
14 */
15
16#include <linux/module.h>
17#include <linux/init.h>
18#include <linux/kernel.h>
19#include <linux/errno.h>
20#include <linux/interrupt.h>
21#include <linux/platform_device.h>
22#include <linux/gpio.h>
23
24#include <pcmcia/ss.h>
25
26#include <asm/irq.h>
27
28#include <mach/arcom-pcmcia.h>
29
30#include "soc_common.h"
31#include "pxa2xx_base.h"
32
33static struct platform_device *arcom_pcmcia_dev;
34
35static inline struct arcom_pcmcia_pdata *viper_get_pdata(void)
36{
37 return arcom_pcmcia_dev->dev.platform_data;
38}
39
40static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
41{
42 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
43 unsigned long flags;
44
45 skt->stat[SOC_STAT_CD].gpio = pdata->cd_gpio;
46 skt->stat[SOC_STAT_CD].name = "PCMCIA_CD";
47 skt->stat[SOC_STAT_RDY].gpio = pdata->rdy_gpio;
48 skt->stat[SOC_STAT_RDY].name = "CF ready";
49
50 if (gpio_request(pdata->pwr_gpio, "CF power"))
51 goto err_request_pwr;
52
53 local_irq_save(flags);
54
55 if (gpio_direction_output(pdata->pwr_gpio, 0)) {
56 local_irq_restore(flags);
57 goto err_dir;
58 }
59
60 local_irq_restore(flags);
61
62 return 0;
63
64err_dir:
65 gpio_free(pdata->pwr_gpio);
66err_request_pwr:
67 dev_err(&arcom_pcmcia_dev->dev, "Failed to setup PCMCIA GPIOs\n");
68 return -1;
69}
70
71/*
72 * Release all resources.
73 */
74static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
75{
76 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
77
78 gpio_free(pdata->pwr_gpio);
79}
80
81static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
82 struct pcmcia_state *state)
83{
84 state->vs_3v = 1; /* Can only apply 3.3V */
85 state->vs_Xv = 0;
86}
87
88static int viper_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
89 const socket_state_t *state)
90{
91 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
92
93 /* Silently ignore Vpp, output enable, speaker enable. */
94 pdata->reset(state->flags & SS_RESET);
95
96 /* Apply socket voltage */
97 switch (state->Vcc) {
98 case 0:
99 gpio_set_value(pdata->pwr_gpio, 0);
100 break;
101 case 33:
102 gpio_set_value(pdata->pwr_gpio, 1);
103 break;
104 default:
105 dev_err(&arcom_pcmcia_dev->dev, "Unsupported Vcc:%d\n", state->Vcc);
106 return -1;
107 }
108
109 return 0;
110}
111
112static struct pcmcia_low_level viper_pcmcia_ops = {
113 .owner = THIS_MODULE,
114 .hw_init = viper_pcmcia_hw_init,
115 .hw_shutdown = viper_pcmcia_hw_shutdown,
116 .socket_state = viper_pcmcia_socket_state,
117 .configure_socket = viper_pcmcia_configure_socket,
118 .nr = 1,
119};
120
121static struct platform_device *viper_pcmcia_device;
122
123static int viper_pcmcia_probe(struct platform_device *pdev)
124{
125 int ret;
126
127 /* I can't imagine more than one device, but you never know... */
128 if (arcom_pcmcia_dev)
129 return -EEXIST;
130
131 if (!pdev->dev.platform_data)
132 return -EINVAL;
133
134 viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
135 if (!viper_pcmcia_device)
136 return -ENOMEM;
137
138 arcom_pcmcia_dev = pdev;
139
140 viper_pcmcia_device->dev.parent = &pdev->dev;
141
142 ret = platform_device_add_data(viper_pcmcia_device,
143 &viper_pcmcia_ops,
144 sizeof(viper_pcmcia_ops));
145
146 if (!ret)
147 ret = platform_device_add(viper_pcmcia_device);
148
149 if (ret) {
150 platform_device_put(viper_pcmcia_device);
151 arcom_pcmcia_dev = NULL;
152 }
153
154 return ret;
155}
156
157static int viper_pcmcia_remove(struct platform_device *pdev)
158{
159 platform_device_unregister(viper_pcmcia_device);
160 arcom_pcmcia_dev = NULL;
161 return 0;
162}
163
164static struct platform_device_id viper_pcmcia_id_table[] = {
165 { .name = "viper-pcmcia", },
166 { .name = "zeus-pcmcia", },
167 { },
168};
169
170static struct platform_driver viper_pcmcia_driver = {
171 .probe = viper_pcmcia_probe,
172 .remove = viper_pcmcia_remove,
173 .driver = {
174 .name = "arcom-pcmcia",
175 .owner = THIS_MODULE,
176 },
177 .id_table = viper_pcmcia_id_table,
178};
179
180module_platform_driver(viper_pcmcia_driver);
181
182MODULE_DEVICE_TABLE(platform, viper_pcmcia_id_table);
183MODULE_LICENSE("GPL");