]>
Commit | Line | Data |
---|---|---|
20f18ff3 | 1 | /* |
c2de1c38 | 2 | * Viper/Zeus PCMCIA support |
20f18ff3 MZ |
3 | * Copyright 2004 Arcom Control Systems |
4 | * | |
5 | * Maintained by Marc Zyngier <maz@misterjones.org> | |
20f18ff3 MZ |
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 | ||
c2de1c38 | 28 | #include <mach/arcom-pcmcia.h> |
20f18ff3 MZ |
29 | |
30 | #include "soc_common.h" | |
31 | #include "pxa2xx_base.h" | |
32 | ||
c2de1c38 MZ |
33 | static struct platform_device *arcom_pcmcia_dev; |
34 | ||
c2de1c38 MZ |
35 | static inline struct arcom_pcmcia_pdata *viper_get_pdata(void) |
36 | { | |
37 | return arcom_pcmcia_dev->dev.platform_data; | |
38 | } | |
39 | ||
20f18ff3 MZ |
40 | static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
41 | { | |
c2de1c38 | 42 | struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); |
20f18ff3 MZ |
43 | unsigned long flags; |
44 | ||
a9bb5a4b RK |
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"; | |
20f18ff3 | 49 | |
c2de1c38 | 50 | if (gpio_request(pdata->pwr_gpio, "CF power")) |
20f18ff3 MZ |
51 | goto err_request_pwr; |
52 | ||
53 | local_irq_save(flags); | |
54 | ||
a9bb5a4b | 55 | if (gpio_direction_output(pdata->pwr_gpio, 0)) { |
20f18ff3 MZ |
56 | local_irq_restore(flags); |
57 | goto err_dir; | |
58 | } | |
59 | ||
60 | local_irq_restore(flags); | |
61 | ||
a9bb5a4b | 62 | return 0; |
20f18ff3 MZ |
63 | |
64 | err_dir: | |
c2de1c38 | 65 | gpio_free(pdata->pwr_gpio); |
20f18ff3 | 66 | err_request_pwr: |
c2de1c38 | 67 | dev_err(&arcom_pcmcia_dev->dev, "Failed to setup PCMCIA GPIOs\n"); |
20f18ff3 MZ |
68 | return -1; |
69 | } | |
70 | ||
71 | /* | |
72 | * Release all resources. | |
73 | */ | |
74 | static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
75 | { | |
c2de1c38 MZ |
76 | struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); |
77 | ||
c2de1c38 | 78 | gpio_free(pdata->pwr_gpio); |
20f18ff3 MZ |
79 | } |
80 | ||
81 | static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
82 | struct pcmcia_state *state) | |
83 | { | |
20f18ff3 MZ |
84 | state->wrprot = 0; |
85 | state->vs_3v = 1; /* Can only apply 3.3V */ | |
86 | state->vs_Xv = 0; | |
87 | } | |
88 | ||
89 | static int viper_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
90 | const socket_state_t *state) | |
91 | { | |
c2de1c38 MZ |
92 | struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); |
93 | ||
20f18ff3 | 94 | /* Silently ignore Vpp, output enable, speaker enable. */ |
c2de1c38 | 95 | pdata->reset(state->flags & SS_RESET); |
20f18ff3 MZ |
96 | |
97 | /* Apply socket voltage */ | |
98 | switch (state->Vcc) { | |
99 | case 0: | |
c2de1c38 | 100 | gpio_set_value(pdata->pwr_gpio, 0); |
20f18ff3 MZ |
101 | break; |
102 | case 33: | |
c2de1c38 | 103 | gpio_set_value(pdata->pwr_gpio, 1); |
20f18ff3 MZ |
104 | break; |
105 | default: | |
c2de1c38 | 106 | dev_err(&arcom_pcmcia_dev->dev, "Unsupported Vcc:%d\n", state->Vcc); |
20f18ff3 MZ |
107 | return -1; |
108 | } | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
c2de1c38 | 113 | static struct pcmcia_low_level viper_pcmcia_ops = { |
20f18ff3 MZ |
114 | .owner = THIS_MODULE, |
115 | .hw_init = viper_pcmcia_hw_init, | |
116 | .hw_shutdown = viper_pcmcia_hw_shutdown, | |
117 | .socket_state = viper_pcmcia_socket_state, | |
118 | .configure_socket = viper_pcmcia_configure_socket, | |
20f18ff3 MZ |
119 | .nr = 1, |
120 | }; | |
121 | ||
122 | static struct platform_device *viper_pcmcia_device; | |
123 | ||
c2de1c38 | 124 | static int viper_pcmcia_probe(struct platform_device *pdev) |
20f18ff3 MZ |
125 | { |
126 | int ret; | |
127 | ||
c2de1c38 MZ |
128 | /* I can't imagine more than one device, but you never know... */ |
129 | if (arcom_pcmcia_dev) | |
130 | return -EEXIST; | |
131 | ||
132 | if (!pdev->dev.platform_data) | |
133 | return -EINVAL; | |
20f18ff3 MZ |
134 | |
135 | viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
136 | if (!viper_pcmcia_device) | |
137 | return -ENOMEM; | |
138 | ||
c2de1c38 MZ |
139 | arcom_pcmcia_dev = pdev; |
140 | ||
141 | viper_pcmcia_device->dev.parent = &pdev->dev; | |
142 | ||
20f18ff3 MZ |
143 | ret = platform_device_add_data(viper_pcmcia_device, |
144 | &viper_pcmcia_ops, | |
145 | sizeof(viper_pcmcia_ops)); | |
146 | ||
147 | if (!ret) | |
148 | ret = platform_device_add(viper_pcmcia_device); | |
149 | ||
c2de1c38 | 150 | if (ret) { |
20f18ff3 | 151 | platform_device_put(viper_pcmcia_device); |
c2de1c38 MZ |
152 | arcom_pcmcia_dev = NULL; |
153 | } | |
20f18ff3 MZ |
154 | |
155 | return ret; | |
156 | } | |
157 | ||
c2de1c38 | 158 | static int viper_pcmcia_remove(struct platform_device *pdev) |
20f18ff3 MZ |
159 | { |
160 | platform_device_unregister(viper_pcmcia_device); | |
c2de1c38 MZ |
161 | arcom_pcmcia_dev = NULL; |
162 | return 0; | |
163 | } | |
164 | ||
165 | static struct platform_device_id viper_pcmcia_id_table[] = { | |
166 | { .name = "viper-pcmcia", }, | |
167 | { .name = "zeus-pcmcia", }, | |
168 | { }, | |
169 | }; | |
170 | ||
171 | static struct platform_driver viper_pcmcia_driver = { | |
172 | .probe = viper_pcmcia_probe, | |
173 | .remove = viper_pcmcia_remove, | |
174 | .driver = { | |
175 | .name = "arcom-pcmcia", | |
176 | .owner = THIS_MODULE, | |
177 | }, | |
178 | .id_table = viper_pcmcia_id_table, | |
179 | }; | |
180 | ||
181 | static int __init viper_pcmcia_init(void) | |
182 | { | |
183 | return platform_driver_register(&viper_pcmcia_driver); | |
184 | } | |
185 | ||
186 | static void __exit viper_pcmcia_exit(void) | |
187 | { | |
188 | return platform_driver_unregister(&viper_pcmcia_driver); | |
20f18ff3 MZ |
189 | } |
190 | ||
191 | module_init(viper_pcmcia_init); | |
192 | module_exit(viper_pcmcia_exit); | |
193 | ||
c2de1c38 | 194 | MODULE_DEVICE_TABLE(platform, viper_pcmcia_id_table); |
20f18ff3 | 195 | MODULE_LICENSE("GPL"); |