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 struct pcmcia_irqs irqs[] = {
33 { .sock = 0, .str = "cs0_cd" }
34 /* on other baseboards we can have more inputs */
37 static int trizeps_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
40 /* we dont have voltage/card/ready detection
41 * so we dont need interrupts for it
45 if (gpio_request(GPIO_PRDY, "cf_irq") < 0) {
46 pr_err("%s: sock %d unable to request gpio %d\n", __func__,
50 if (gpio_direction_input(GPIO_PRDY) < 0) {
51 pr_err("%s: sock %d unable to set input gpio %d\n", __func__,
56 skt->socket.pci_irq = gpio_to_irq(GPIO_PRDY);
57 irqs[0].irq = gpio_to_irq(GPIO_PCD);
62 /* release the reset of this card */
63 pr_debug("%s: sock %d irq %d\n", __func__, skt->nr, skt->socket.pci_irq);
65 /* supplementory irqs for the socket */
66 for (i = 0; i < ARRAY_SIZE(irqs); i++) {
67 if (irqs[i].sock != skt->nr)
69 if (gpio_request(irq_to_gpio(irqs[i].irq), irqs[i].str) < 0) {
70 pr_err("%s: sock %d unable to request gpio %d\n",
71 __func__, skt->nr, irq_to_gpio(irqs[i].irq));
75 if (gpio_direction_input(irq_to_gpio(irqs[i].irq)) < 0) {
76 pr_err("%s: sock %d unable to set input gpio %d\n",
77 __func__, skt->nr, irq_to_gpio(irqs[i].irq));
82 return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
86 gpio_free(irq_to_gpio(irqs[i].irq));
91 static void trizeps_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
94 /* free allocated gpio's */
96 for (i = 0; i < ARRAY_SIZE(irqs); i++)
97 gpio_free(irq_to_gpio(irqs[i].irq));
100 static unsigned long trizeps_pcmcia_status[2];
102 static void trizeps_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
103 struct pcmcia_state *state)
105 unsigned short status = 0, change;
106 status = CFSR_readw();
107 change = (status ^ trizeps_pcmcia_status[skt->nr]) &
110 trizeps_pcmcia_status[skt->nr] = status;
111 if (status & ConXS_CFSR_BVD1) {
112 /* enable_irq empty */
114 /* disable_irq empty */
120 /* just fill in fix states */
121 state->detect = gpio_get_value(GPIO_PCD) ? 0 : 1;
122 state->ready = gpio_get_value(GPIO_PRDY) ? 1 : 0;
123 state->bvd1 = (status & ConXS_CFSR_BVD1) ? 1 : 0;
124 state->bvd2 = (status & ConXS_CFSR_BVD2) ? 1 : 0;
125 state->vs_3v = (status & ConXS_CFSR_VS1) ? 0 : 1;
126 state->vs_Xv = (status & ConXS_CFSR_VS2) ? 0 : 1;
127 state->wrprot = 0; /* not available */
130 #ifndef CONFIG_MACH_TRIZEPS_CONXS
131 /* on ConXS we only have one slot. Second is inactive */
146 static int trizeps_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
147 const socket_state_t *state)
150 unsigned short power = 0;
152 /* we do nothing here just check a bit */
153 switch (state->Vcc) {
154 case 0: power &= 0xfc; break;
155 case 33: power |= ConXS_BCR_S0_VCC_3V3; break;
157 pr_err("%s(): Vcc 5V not supported in socket\n", __func__);
160 pr_err("%s(): bad Vcc %u\n", __func__, state->Vcc);
164 switch (state->Vpp) {
165 case 0: power &= 0xf3; break;
166 case 33: power |= ConXS_BCR_S0_VPP_3V3; break;
168 pr_err("%s(): Vpp 12V not supported in socket\n", __func__);
171 if (state->Vpp != state->Vcc) {
172 pr_err("%s(): bad Vpp %u\n", __func__, state->Vpp);
178 case 0: /* we only have 3.3V */
179 board_pcmcia_power(power);
182 #ifndef CONFIG_MACH_TRIZEPS_CONXS
183 /* on ConXS we only have one slot. Second is inactive */
193 static void trizeps_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
196 board_pcmcia_power(0x9);
199 static void trizeps_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
201 board_pcmcia_power(0x0);
204 static struct pcmcia_low_level trizeps_pcmcia_ops = {
205 .owner = THIS_MODULE,
206 .hw_init = trizeps_pcmcia_hw_init,
207 .hw_shutdown = trizeps_pcmcia_hw_shutdown,
208 .socket_state = trizeps_pcmcia_socket_state,
209 .configure_socket = trizeps_pcmcia_configure_socket,
210 .socket_init = trizeps_pcmcia_socket_init,
211 .socket_suspend = trizeps_pcmcia_socket_suspend,
212 #ifdef CONFIG_MACH_TRIZEPS_CONXS
220 static struct platform_device *trizeps_pcmcia_device;
222 static int __init trizeps_pcmcia_init(void)
226 if (!machine_is_trizeps4() && !machine_is_trizeps4wl())
229 trizeps_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
230 if (!trizeps_pcmcia_device)
233 ret = platform_device_add_data(trizeps_pcmcia_device,
234 &trizeps_pcmcia_ops, sizeof(trizeps_pcmcia_ops));
237 ret = platform_device_add(trizeps_pcmcia_device);
240 platform_device_put(trizeps_pcmcia_device);
245 static void __exit trizeps_pcmcia_exit(void)
247 platform_device_unregister(trizeps_pcmcia_device);
250 fs_initcall(trizeps_pcmcia_init);
251 module_exit(trizeps_pcmcia_exit);
253 MODULE_LICENSE("GPL");
254 MODULE_AUTHOR("Juergen Schindele");
255 MODULE_ALIAS("platform:pxa2xx-pcmcia");