2 * linux/drivers/pcmcia/pxa2xx_trizeps4.c
4 * TRIZEPS PCMCIA specific routines.
6 * Author: Jürgen Schindele
8 * Copyright: Jürgen Schindele
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/module.h>
16 #include <linux/init.h>
17 #include <linux/kernel.h>
18 #include <linux/gpio.h>
19 #include <linux/interrupt.h>
20 #include <linux/platform_device.h>
22 #include <asm/mach-types.h>
25 #include <mach/pxa2xx-regs.h>
26 #include <mach/trizeps4.h>
28 #include "soc_common.h"
30 extern void board_pcmcia_power(int power);
32 static int trizeps_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
34 /* we dont have voltage/card/ready detection
35 * so we dont need interrupts for it
39 skt->stat[SOC_STAT_CD].gpio = GPIO_PCD;
40 skt->stat[SOC_STAT_CD].name = "cs0_cd";
41 skt->stat[SOC_STAT_RDY].gpio = GPIO_PRDY;
42 skt->stat[SOC_STAT_RDY].name = "cs0_rdy";
47 /* release the reset of this card */
48 pr_debug("%s: sock %d irq %d\n", __func__, skt->nr, skt->socket.pci_irq);
53 static unsigned long trizeps_pcmcia_status[2];
55 static void trizeps_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
56 struct pcmcia_state *state)
58 unsigned short status = 0, change;
59 status = CFSR_readw();
60 change = (status ^ trizeps_pcmcia_status[skt->nr]) &
63 trizeps_pcmcia_status[skt->nr] = status;
64 if (status & ConXS_CFSR_BVD1) {
65 /* enable_irq empty */
67 /* disable_irq empty */
73 /* just fill in fix states */
74 state->bvd1 = (status & ConXS_CFSR_BVD1) ? 1 : 0;
75 state->bvd2 = (status & ConXS_CFSR_BVD2) ? 1 : 0;
76 state->vs_3v = (status & ConXS_CFSR_VS1) ? 0 : 1;
77 state->vs_Xv = (status & ConXS_CFSR_VS2) ? 0 : 1;
80 #ifndef CONFIG_MACH_TRIZEPS_CONXS
81 /* on ConXS we only have one slot. Second is inactive */
95 static int trizeps_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
96 const socket_state_t *state)
99 unsigned short power = 0;
101 /* we do nothing here just check a bit */
102 switch (state->Vcc) {
103 case 0: power &= 0xfc; break;
104 case 33: power |= ConXS_BCR_S0_VCC_3V3; break;
106 pr_err("%s(): Vcc 5V not supported in socket\n", __func__);
109 pr_err("%s(): bad Vcc %u\n", __func__, state->Vcc);
113 switch (state->Vpp) {
114 case 0: power &= 0xf3; break;
115 case 33: power |= ConXS_BCR_S0_VPP_3V3; break;
117 pr_err("%s(): Vpp 12V not supported in socket\n", __func__);
120 if (state->Vpp != state->Vcc) {
121 pr_err("%s(): bad Vpp %u\n", __func__, state->Vpp);
127 case 0: /* we only have 3.3V */
128 board_pcmcia_power(power);
131 #ifndef CONFIG_MACH_TRIZEPS_CONXS
132 /* on ConXS we only have one slot. Second is inactive */
142 static void trizeps_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
145 board_pcmcia_power(0x9);
148 static void trizeps_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
150 board_pcmcia_power(0x0);
153 static struct pcmcia_low_level trizeps_pcmcia_ops = {
154 .owner = THIS_MODULE,
155 .hw_init = trizeps_pcmcia_hw_init,
156 .socket_state = trizeps_pcmcia_socket_state,
157 .configure_socket = trizeps_pcmcia_configure_socket,
158 .socket_init = trizeps_pcmcia_socket_init,
159 .socket_suspend = trizeps_pcmcia_socket_suspend,
160 #ifdef CONFIG_MACH_TRIZEPS_CONXS
168 static struct platform_device *trizeps_pcmcia_device;
170 static int __init trizeps_pcmcia_init(void)
174 if (!machine_is_trizeps4() && !machine_is_trizeps4wl())
177 trizeps_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
178 if (!trizeps_pcmcia_device)
181 ret = platform_device_add_data(trizeps_pcmcia_device,
182 &trizeps_pcmcia_ops, sizeof(trizeps_pcmcia_ops));
185 ret = platform_device_add(trizeps_pcmcia_device);
188 platform_device_put(trizeps_pcmcia_device);
193 static void __exit trizeps_pcmcia_exit(void)
195 platform_device_unregister(trizeps_pcmcia_device);
198 fs_initcall(trizeps_pcmcia_init);
199 module_exit(trizeps_pcmcia_exit);
201 MODULE_LICENSE("GPL");
202 MODULE_AUTHOR("Juergen Schindele");
203 MODULE_ALIAS("platform:pxa2xx-pcmcia");