/* * Viper/Zeus PCMCIA support * Copyright 2004 Arcom Control Systems * * Maintained by Marc Zyngier <maz@misterjones.org> * * 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/arcom-pcmcia.h> #include "soc_common.h" #include "pxa2xx_base.h" static struct platform_device *arcom_pcmcia_dev; static struct pcmcia_irqs irqs[] = { { .sock = 0, .str = "PCMCIA_CD", }, }; static inline struct arcom_pcmcia_pdata *viper_get_pdata(void) { return arcom_pcmcia_dev->dev.platform_data; } static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); unsigned long flags; skt->socket.pci_irq = gpio_to_irq(pdata->rdy_gpio); irqs[0].irq = gpio_to_irq(pdata->cd_gpio); if (gpio_request(pdata->cd_gpio, "CF detect")) goto err_request_cd; if (gpio_request(pdata->rdy_gpio, "CF ready")) goto err_request_rdy; if (gpio_request(pdata->pwr_gpio, "CF power")) goto err_request_pwr; local_irq_save(flags); if (gpio_direction_output(pdata->pwr_gpio, 0) || gpio_direction_input(pdata->cd_gpio) || gpio_direction_input(pdata->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(pdata->pwr_gpio); err_request_pwr: gpio_free(pdata->rdy_gpio); err_request_rdy: gpio_free(pdata->cd_gpio); err_request_cd: dev_err(&arcom_pcmcia_dev->dev, "Failed to setup PCMCIA GPIOs\n"); return -1; } /* * Release all resources. */ static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) { struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); gpio_free(pdata->pwr_gpio); gpio_free(pdata->rdy_gpio); gpio_free(pdata->cd_gpio); } static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); state->detect = !gpio_get_value(pdata->cd_gpio); state->ready = !!gpio_get_value(pdata->rdy_gpio); 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) { struct arcom_pcmcia_pdata *pdata = viper_get_pdata(); /* Silently ignore Vpp, output enable, speaker enable. */ pdata->reset(state->flags & SS_RESET); /* Apply socket voltage */ switch (state->Vcc) { case 0: gpio_set_value(pdata->pwr_gpio, 0); break; case 33: gpio_set_value(pdata->pwr_gpio, 1); break; default: dev_err(&arcom_pcmcia_dev->dev, "Unsupported Vcc:%d\n", 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 = { .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 viper_pcmcia_probe(struct platform_device *pdev) { int ret; /* I can't imagine more than one device, but you never know... */ if (arcom_pcmcia_dev) return -EEXIST; if (!pdev->dev.platform_data) return -EINVAL; viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); if (!viper_pcmcia_device) return -ENOMEM; arcom_pcmcia_dev = pdev; viper_pcmcia_device->dev.parent = &pdev->dev; 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); arcom_pcmcia_dev = NULL; } return ret; } static int viper_pcmcia_remove(struct platform_device *pdev) { platform_device_unregister(viper_pcmcia_device); arcom_pcmcia_dev = NULL; return 0; } static struct platform_device_id viper_pcmcia_id_table[] = { { .name = "viper-pcmcia", }, { .name = "zeus-pcmcia", }, { }, }; static struct platform_driver viper_pcmcia_driver = { .probe = viper_pcmcia_probe, .remove = viper_pcmcia_remove, .driver = { .name = "arcom-pcmcia", .owner = THIS_MODULE, }, .id_table = viper_pcmcia_id_table, }; static int __init viper_pcmcia_init(void) { return platform_driver_register(&viper_pcmcia_driver); } static void __exit viper_pcmcia_exit(void) { return platform_driver_unregister(&viper_pcmcia_driver); } module_init(viper_pcmcia_init); module_exit(viper_pcmcia_exit); MODULE_DEVICE_TABLE(platform, viper_pcmcia_id_table); MODULE_LICENSE("GPL");