/* * linux/drivers/pcmcia/pxa/pxa_cm_x270.c * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Compulab Ltd., 2003, 2007, 2008 * Mike Rapoport <mike@compulab.co.il> * */ #include <linux/platform_device.h> #include <linux/irq.h> #include <linux/delay.h> #include <linux/gpio.h> #include <linux/export.h> #include <asm/mach-types.h> #include "soc_common.h" #define GPIO_PCMCIA_S0_CD_VALID (84) #define GPIO_PCMCIA_S0_RDYINT (82) #define GPIO_PCMCIA_RESET (53) #define PCMCIA_S0_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID) #define PCMCIA_S0_RDYINT IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT) static struct pcmcia_irqs irqs[] = { { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" }, }; static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset"); if (ret) return ret; gpio_direction_output(GPIO_PCMCIA_RESET, 0); skt->socket.pci_irq = PCMCIA_S0_RDYINT; ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); if (!ret) gpio_free(GPIO_PCMCIA_RESET); return ret; } static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt) { soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); gpio_free(GPIO_PCMCIA_RESET); } static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { state->detect = (gpio_get_value(GPIO_PCMCIA_S0_CD_VALID) == 0) ? 1 : 0; state->ready = (gpio_get_value(GPIO_PCMCIA_S0_RDYINT) == 0) ? 0 : 1; state->bvd1 = 1; state->bvd2 = 1; state->vs_3v = 0; state->vs_Xv = 0; state->wrprot = 0; /* not available */ } static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { switch (skt->nr) { case 0: if (state->flags & SS_RESET) { gpio_set_value(GPIO_PCMCIA_RESET, 1); udelay(10); gpio_set_value(GPIO_PCMCIA_RESET, 0); } break; } return 0; } static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = { .owner = THIS_MODULE, .hw_init = cmx270_pcmcia_hw_init, .hw_shutdown = cmx270_pcmcia_shutdown, .socket_state = cmx270_pcmcia_socket_state, .configure_socket = cmx270_pcmcia_configure_socket, .nr = 1, }; static struct platform_device *cmx270_pcmcia_device; int __init cmx270_pcmcia_init(void) { int ret; cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); if (!cmx270_pcmcia_device) return -ENOMEM; ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops, sizeof(cmx270_pcmcia_ops)); if (ret == 0) { printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n"); ret = platform_device_add(cmx270_pcmcia_device); } if (ret) platform_device_put(cmx270_pcmcia_device); return ret; } void __exit cmx270_pcmcia_exit(void) { platform_device_unregister(cmx270_pcmcia_device); }