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Marc Zyngier20f18ff2008-08-19 12:15:53 +02001/*
Marc Zyngierc2de1c382009-11-14 13:39:13 +01002 * Viper/Zeus PCMCIA support
Marc Zyngier20f18ff2008-08-19 12:15:53 +02003 * Copyright 2004 Arcom Control Systems
4 *
5 * Maintained by Marc Zyngier <maz@misterjones.org>
Marc Zyngier20f18ff2008-08-19 12:15:53 +02006 *
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
Arnd Bergmann293b2da2012-08-24 15:16:48 +020028#include <linux/platform_data/pcmcia-pxa2xx_viper.h>
Marc Zyngier20f18ff2008-08-19 12:15:53 +020029
30#include "soc_common.h"
31#include "pxa2xx_base.h"
32
Marc Zyngierc2de1c382009-11-14 13:39:13 +010033static struct platform_device *arcom_pcmcia_dev;
34
Marc Zyngierc2de1c382009-11-14 13:39:13 +010035static inline struct arcom_pcmcia_pdata *viper_get_pdata(void)
36{
37 return arcom_pcmcia_dev->dev.platform_data;
38}
39
Marc Zyngier20f18ff2008-08-19 12:15:53 +020040static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
41{
Marc Zyngierc2de1c382009-11-14 13:39:13 +010042 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
Marc Zyngier20f18ff2008-08-19 12:15:53 +020043 unsigned long flags;
44
Russell Kinga9bb5a42012-01-13 22:56:32 +000045 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";
Marc Zyngier20f18ff2008-08-19 12:15:53 +020049
Marc Zyngierc2de1c382009-11-14 13:39:13 +010050 if (gpio_request(pdata->pwr_gpio, "CF power"))
Marc Zyngier20f18ff2008-08-19 12:15:53 +020051 goto err_request_pwr;
52
53 local_irq_save(flags);
54
Russell Kinga9bb5a42012-01-13 22:56:32 +000055 if (gpio_direction_output(pdata->pwr_gpio, 0)) {
Marc Zyngier20f18ff2008-08-19 12:15:53 +020056 local_irq_restore(flags);
57 goto err_dir;
58 }
59
60 local_irq_restore(flags);
61
Russell Kinga9bb5a42012-01-13 22:56:32 +000062 return 0;
Marc Zyngier20f18ff2008-08-19 12:15:53 +020063
64err_dir:
Marc Zyngierc2de1c382009-11-14 13:39:13 +010065 gpio_free(pdata->pwr_gpio);
Marc Zyngier20f18ff2008-08-19 12:15:53 +020066err_request_pwr:
Marc Zyngierc2de1c382009-11-14 13:39:13 +010067 dev_err(&arcom_pcmcia_dev->dev, "Failed to setup PCMCIA GPIOs\n");
Marc Zyngier20f18ff2008-08-19 12:15:53 +020068 return -1;
69}
70
71/*
72 * Release all resources.
73 */
74static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
75{
Marc Zyngierc2de1c382009-11-14 13:39:13 +010076 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
77
Marc Zyngierc2de1c382009-11-14 13:39:13 +010078 gpio_free(pdata->pwr_gpio);
Marc Zyngier20f18ff2008-08-19 12:15:53 +020079}
80
81static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
82 struct pcmcia_state *state)
83{
Marc Zyngier20f18ff2008-08-19 12:15:53 +020084 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{
Marc Zyngierc2de1c382009-11-14 13:39:13 +010091 struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
92
Marc Zyngier20f18ff2008-08-19 12:15:53 +020093 /* Silently ignore Vpp, output enable, speaker enable. */
Marc Zyngierc2de1c382009-11-14 13:39:13 +010094 pdata->reset(state->flags & SS_RESET);
Marc Zyngier20f18ff2008-08-19 12:15:53 +020095
96 /* Apply socket voltage */
97 switch (state->Vcc) {
98 case 0:
Marc Zyngierc2de1c382009-11-14 13:39:13 +010099 gpio_set_value(pdata->pwr_gpio, 0);
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200100 break;
101 case 33:
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100102 gpio_set_value(pdata->pwr_gpio, 1);
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200103 break;
104 default:
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100105 dev_err(&arcom_pcmcia_dev->dev, "Unsupported Vcc:%d\n", state->Vcc);
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200106 return -1;
107 }
108
109 return 0;
110}
111
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100112static struct pcmcia_low_level viper_pcmcia_ops = {
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200113 .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,
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200118 .nr = 1,
119};
120
121static struct platform_device *viper_pcmcia_device;
122
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100123static int viper_pcmcia_probe(struct platform_device *pdev)
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200124{
125 int ret;
126
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100127 /* 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;
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200133
134 viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
135 if (!viper_pcmcia_device)
136 return -ENOMEM;
137
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100138 arcom_pcmcia_dev = pdev;
139
140 viper_pcmcia_device->dev.parent = &pdev->dev;
141
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200142 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
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100149 if (ret) {
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200150 platform_device_put(viper_pcmcia_device);
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100151 arcom_pcmcia_dev = NULL;
152 }
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200153
154 return ret;
155}
156
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100157static int viper_pcmcia_remove(struct platform_device *pdev)
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200158{
159 platform_device_unregister(viper_pcmcia_device);
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100160 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
Axel Lin5d95f8e22011-11-27 12:53:06 +0800180module_platform_driver(viper_pcmcia_driver);
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200181
Marc Zyngierc2de1c382009-11-14 13:39:13 +0100182MODULE_DEVICE_TABLE(platform, viper_pcmcia_id_table);
Marc Zyngier20f18ff2008-08-19 12:15:53 +0200183MODULE_LICENSE("GPL");