/* * VIPER PCMCIA support * Copyright 2004 Arcom Control Systems * * Maintained by Marc Zyngier <maz@misterjones.org> * <marc.zyngier@altran.com> * * Based on: * iPAQ h2200 PCMCIA support * Copyright 2004 Koen Kooi <koen@vestingbar.nl> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. */ #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/gpio.h> #include <pcmcia/ss.h> #include <asm/irq.h> #include <mach/viper.h> #include <asm/mach-types.h> #include "soc_common.h" #include "pxa2xx_base.h" static struct pcmcia_irqs irqs[] = { { 0, gpio_to_irq(VIPER_CF_CD_GPIO), "PCMCIA_CD" } }; static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { unsigned long flags; skt->irq = gpio_to_irq(VIPER_CF_RDY_GPIO); if (gpio_request(VIPER_CF_CD_GPIO, "CF detect")) goto err_request_cd; if (gpio_request(VIPER_CF_RDY_GPIO, "CF ready")) goto err_request_rdy; if (gpio_request(VIPER_CF_POWER_GPIO, "CF power")) goto err_request_pwr; local_irq_save(flags); /* GPIO 82 is the CF power enable line. initially off */ if (gpio_direction_output(VIPER_CF_POWER_GPIO, 0) || gpio_direction_input(VIPER_CF_CD_GPIO) || gpio_direction_input(VIPER_CF_RDY_GPIO)) { local_irq_restore(flags); goto err_dir; } local_irq_restore(flags); return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); err_dir: gpio_free(VIPER_CF_POWER_GPIO); err_request_pwr: gpio_free(VIPER_CF_RDY_GPIO); err_request_rdy: gpio_free(VIPER_CF_CD_GPIO); err_request_cd: printk(KERN_ERR "viper: Failed to setup PCMCIA GPIOs\n"); return -1; } /* * Release all resources. */ static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) { soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); gpio_free(VIPER_CF_POWER_GPIO); gpio_free(VIPER_CF_RDY_GPIO); gpio_free(VIPER_CF_CD_GPIO); } static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { state->detect = gpio_get_value(VIPER_CF_CD_GPIO) ? 0 : 1; state->ready = gpio_get_value(VIPER_CF_RDY_GPIO) ? 1 : 0; state->bvd1 = 1; state->bvd2 = 1; state->wrprot = 0; state->vs_3v = 1; /* Can only apply 3.3V */ state->vs_Xv = 0; } static int viper_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { /* Silently ignore Vpp, output enable, speaker enable. */ viper_cf_rst(state->flags & SS_RESET); /* Apply socket voltage */ switch (state->Vcc) { case 0: gpio_set_value(VIPER_CF_POWER_GPIO, 0); break; case 33: gpio_set_value(VIPER_CF_POWER_GPIO, 1); break; default: printk(KERN_ERR "%s: Unsupported Vcc:%d\n", __func__, state->Vcc); return -1; } return 0; } static void viper_pcmcia_socket_init(struct soc_pcmcia_socket *skt) { } static void viper_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { } static struct pcmcia_low_level viper_pcmcia_ops __initdata = { .owner = THIS_MODULE, .hw_init = viper_pcmcia_hw_init, .hw_shutdown = viper_pcmcia_hw_shutdown, .socket_state = viper_pcmcia_socket_state, .configure_socket = viper_pcmcia_configure_socket, .socket_init = viper_pcmcia_socket_init, .socket_suspend = viper_pcmcia_socket_suspend, .nr = 1, }; static struct platform_device *viper_pcmcia_device; static int __init viper_pcmcia_init(void) { int ret; if (!machine_is_viper()) return -ENODEV; viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); if (!viper_pcmcia_device) return -ENOMEM; ret = platform_device_add_data(viper_pcmcia_device, &viper_pcmcia_ops, sizeof(viper_pcmcia_ops)); if (!ret) ret = platform_device_add(viper_pcmcia_device); if (ret) platform_device_put(viper_pcmcia_device); return ret; } static void __exit viper_pcmcia_exit(void) { platform_device_unregister(viper_pcmcia_device); } module_init(viper_pcmcia_init); module_exit(viper_pcmcia_exit); MODULE_LICENSE("GPL");