| /* |
| * 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 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->stat[SOC_STAT_CD].gpio = pdata->cd_gpio; |
| skt->stat[SOC_STAT_CD].name = "PCMCIA_CD"; |
| skt->stat[SOC_STAT_RDY].gpio = pdata->rdy_gpio; |
| skt->stat[SOC_STAT_RDY].name = "CF ready"; |
| |
| if (gpio_request(pdata->pwr_gpio, "CF power")) |
| goto err_request_pwr; |
| |
| local_irq_save(flags); |
| |
| if (gpio_direction_output(pdata->pwr_gpio, 0)) { |
| local_irq_restore(flags); |
| goto err_dir; |
| } |
| |
| local_irq_restore(flags); |
| |
| return 0; |
| |
| err_dir: |
| gpio_free(pdata->pwr_gpio); |
| err_request_pwr: |
| 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(); |
| |
| gpio_free(pdata->pwr_gpio); |
| } |
| |
| static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
| struct pcmcia_state *state) |
| { |
| 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 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, |
| .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"); |