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 | ||
20f18ff3 | 35 | static struct pcmcia_irqs irqs[] = { |
c2de1c38 MZ |
36 | { |
37 | .sock = 0, | |
38 | .str = "PCMCIA_CD", | |
39 | }, | |
20f18ff3 MZ |
40 | }; |
41 | ||
c2de1c38 MZ |
42 | static inline struct arcom_pcmcia_pdata *viper_get_pdata(void) |
43 | { | |
44 | return arcom_pcmcia_dev->dev.platform_data; | |
45 | } | |
46 | ||
20f18ff3 MZ |
47 | static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
48 | { | |
c2de1c38 | 49 | struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); |
20f18ff3 MZ |
50 | unsigned long flags; |
51 | ||
c2de1c38 MZ |
52 | skt->socket.pci_irq = gpio_to_irq(pdata->rdy_gpio); |
53 | irqs[0].irq = gpio_to_irq(pdata->cd_gpio); | |
20f18ff3 | 54 | |
c2de1c38 | 55 | if (gpio_request(pdata->cd_gpio, "CF detect")) |
20f18ff3 MZ |
56 | goto err_request_cd; |
57 | ||
c2de1c38 | 58 | if (gpio_request(pdata->rdy_gpio, "CF ready")) |
20f18ff3 MZ |
59 | goto err_request_rdy; |
60 | ||
c2de1c38 | 61 | if (gpio_request(pdata->pwr_gpio, "CF power")) |
20f18ff3 MZ |
62 | goto err_request_pwr; |
63 | ||
64 | local_irq_save(flags); | |
65 | ||
c2de1c38 MZ |
66 | if (gpio_direction_output(pdata->pwr_gpio, 0) || |
67 | gpio_direction_input(pdata->cd_gpio) || | |
68 | gpio_direction_input(pdata->rdy_gpio)) { | |
20f18ff3 MZ |
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 | ||
77 | err_dir: | |
c2de1c38 | 78 | gpio_free(pdata->pwr_gpio); |
20f18ff3 | 79 | err_request_pwr: |
c2de1c38 | 80 | gpio_free(pdata->rdy_gpio); |
20f18ff3 | 81 | err_request_rdy: |
c2de1c38 | 82 | gpio_free(pdata->cd_gpio); |
20f18ff3 | 83 | err_request_cd: |
c2de1c38 | 84 | dev_err(&arcom_pcmcia_dev->dev, "Failed to setup PCMCIA GPIOs\n"); |
20f18ff3 MZ |
85 | return -1; |
86 | } | |
87 | ||
88 | /* | |
89 | * Release all resources. | |
90 | */ | |
91 | static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
92 | { | |
c2de1c38 MZ |
93 | struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); |
94 | ||
20f18ff3 | 95 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
c2de1c38 MZ |
96 | gpio_free(pdata->pwr_gpio); |
97 | gpio_free(pdata->rdy_gpio); | |
98 | gpio_free(pdata->cd_gpio); | |
20f18ff3 MZ |
99 | } |
100 | ||
101 | static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
102 | struct pcmcia_state *state) | |
103 | { | |
c2de1c38 MZ |
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); | |
20f18ff3 MZ |
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 | ||
115 | static int viper_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
116 | const socket_state_t *state) | |
117 | { | |
c2de1c38 MZ |
118 | struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); |
119 | ||
20f18ff3 | 120 | /* Silently ignore Vpp, output enable, speaker enable. */ |
c2de1c38 | 121 | pdata->reset(state->flags & SS_RESET); |
20f18ff3 MZ |
122 | |
123 | /* Apply socket voltage */ | |
124 | switch (state->Vcc) { | |
125 | case 0: | |
c2de1c38 | 126 | gpio_set_value(pdata->pwr_gpio, 0); |
20f18ff3 MZ |
127 | break; |
128 | case 33: | |
c2de1c38 | 129 | gpio_set_value(pdata->pwr_gpio, 1); |
20f18ff3 MZ |
130 | break; |
131 | default: | |
c2de1c38 | 132 | dev_err(&arcom_pcmcia_dev->dev, "Unsupported Vcc:%d\n", state->Vcc); |
20f18ff3 MZ |
133 | return -1; |
134 | } | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
139 | static void viper_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
140 | { | |
141 | } | |
142 | ||
143 | static void viper_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
144 | { | |
145 | } | |
146 | ||
c2de1c38 | 147 | static struct pcmcia_low_level viper_pcmcia_ops = { |
20f18ff3 MZ |
148 | .owner = THIS_MODULE, |
149 | .hw_init = viper_pcmcia_hw_init, | |
150 | .hw_shutdown = viper_pcmcia_hw_shutdown, | |
151 | .socket_state = viper_pcmcia_socket_state, | |
152 | .configure_socket = viper_pcmcia_configure_socket, | |
153 | .socket_init = viper_pcmcia_socket_init, | |
154 | .socket_suspend = viper_pcmcia_socket_suspend, | |
155 | .nr = 1, | |
156 | }; | |
157 | ||
158 | static struct platform_device *viper_pcmcia_device; | |
159 | ||
c2de1c38 | 160 | static int viper_pcmcia_probe(struct platform_device *pdev) |
20f18ff3 MZ |
161 | { |
162 | int ret; | |
163 | ||
c2de1c38 MZ |
164 | /* I can't imagine more than one device, but you never know... */ |
165 | if (arcom_pcmcia_dev) | |
166 | return -EEXIST; | |
167 | ||
168 | if (!pdev->dev.platform_data) | |
169 | return -EINVAL; | |
20f18ff3 MZ |
170 | |
171 | viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
172 | if (!viper_pcmcia_device) | |
173 | return -ENOMEM; | |
174 | ||
c2de1c38 MZ |
175 | arcom_pcmcia_dev = pdev; |
176 | ||
177 | viper_pcmcia_device->dev.parent = &pdev->dev; | |
178 | ||
20f18ff3 MZ |
179 | ret = platform_device_add_data(viper_pcmcia_device, |
180 | &viper_pcmcia_ops, | |
181 | sizeof(viper_pcmcia_ops)); | |
182 | ||
183 | if (!ret) | |
184 | ret = platform_device_add(viper_pcmcia_device); | |
185 | ||
c2de1c38 | 186 | if (ret) { |
20f18ff3 | 187 | platform_device_put(viper_pcmcia_device); |
c2de1c38 MZ |
188 | arcom_pcmcia_dev = NULL; |
189 | } | |
20f18ff3 MZ |
190 | |
191 | return ret; | |
192 | } | |
193 | ||
c2de1c38 | 194 | static int viper_pcmcia_remove(struct platform_device *pdev) |
20f18ff3 MZ |
195 | { |
196 | platform_device_unregister(viper_pcmcia_device); | |
c2de1c38 MZ |
197 | arcom_pcmcia_dev = NULL; |
198 | return 0; | |
199 | } | |
200 | ||
201 | static struct platform_device_id viper_pcmcia_id_table[] = { | |
202 | { .name = "viper-pcmcia", }, | |
203 | { .name = "zeus-pcmcia", }, | |
204 | { }, | |
205 | }; | |
206 | ||
207 | static struct platform_driver viper_pcmcia_driver = { | |
208 | .probe = viper_pcmcia_probe, | |
209 | .remove = viper_pcmcia_remove, | |
210 | .driver = { | |
211 | .name = "arcom-pcmcia", | |
212 | .owner = THIS_MODULE, | |
213 | }, | |
214 | .id_table = viper_pcmcia_id_table, | |
215 | }; | |
216 | ||
217 | static int __init viper_pcmcia_init(void) | |
218 | { | |
219 | return platform_driver_register(&viper_pcmcia_driver); | |
220 | } | |
221 | ||
222 | static void __exit viper_pcmcia_exit(void) | |
223 | { | |
224 | return platform_driver_unregister(&viper_pcmcia_driver); | |
20f18ff3 MZ |
225 | } |
226 | ||
227 | module_init(viper_pcmcia_init); | |
228 | module_exit(viper_pcmcia_exit); | |
229 | ||
c2de1c38 | 230 | MODULE_DEVICE_TABLE(platform, viper_pcmcia_id_table); |
20f18ff3 | 231 | MODULE_LICENSE("GPL"); |