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drivers/pcmcia/pxa2xx_e740.c
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/* * Toshiba e740 PCMCIA specific routines. * * (c) 2004 Ian Molton <spyro@f2s.com> * * 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. */ #include <linux/init.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/gpio.h> #include <linux/interrupt.h> #include <linux/platform_device.h> |
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#include <mach/eseries-gpio.h> #include <asm/irq.h> #include <asm/mach-types.h> #include "soc_common.h" static struct pcmcia_irqs cd_irqs[] = { { .sock = 0, |
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.str = "CF card detect" }, { .sock = 1, |
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.str = "Wifi switch" }, }; static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { |
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if (skt->nr == 0) skt->socket.pci_irq = gpio_to_irq(GPIO_E740_PCMCIA_RDY0); else skt->socket.pci_irq = gpio_to_irq(GPIO_E740_PCMCIA_RDY1); cd_irqs[0].irq = gpio_to_irq(GPIO_E740_PCMCIA_CD0); cd_irqs[1].irq = gpio_to_irq(GPIO_E740_PCMCIA_CD1); |
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return soc_pcmcia_request_irqs(skt, &cd_irqs[skt->nr], 1); } /* * Release all resources. */ static void e740_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) { soc_pcmcia_free_irqs(skt, &cd_irqs[skt->nr], 1); } static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { if (skt->nr == 0) { state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD0) ? 0 : 1; state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY0) ? 1 : 0; } else { state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD1) ? 0 : 1; state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY1) ? 1 : 0; } state->vs_3v = 1; state->bvd1 = 1; state->bvd2 = 1; state->wrprot = 0; state->vs_Xv = 0; } static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { if (state->flags & SS_RESET) { if (skt->nr == 0) gpio_set_value(GPIO_E740_PCMCIA_RST0, 1); else gpio_set_value(GPIO_E740_PCMCIA_RST1, 1); } else { if (skt->nr == 0) gpio_set_value(GPIO_E740_PCMCIA_RST0, 0); else gpio_set_value(GPIO_E740_PCMCIA_RST1, 0); } switch (state->Vcc) { case 0: /* Socket off */ if (skt->nr == 0) gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0); else gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1); break; case 50: case 33: /* socket on */ if (skt->nr == 0) gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1); else gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0); break; default: printk(KERN_ERR "e740_cs: Unsupported Vcc: %d ", state->Vcc); } return 0; } /* * Enable card status IRQs on (re-)initialisation. This can * be called at initialisation, power management event, or * pcmcia event. */ static void e740_pcmcia_socket_init(struct soc_pcmcia_socket *skt) { soc_pcmcia_enable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs)); } /* * Disable card status IRQs on suspend. */ static void e740_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { soc_pcmcia_disable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs)); } static struct pcmcia_low_level e740_pcmcia_ops = { .owner = THIS_MODULE, .hw_init = e740_pcmcia_hw_init, .hw_shutdown = e740_pcmcia_hw_shutdown, .socket_state = e740_pcmcia_socket_state, .configure_socket = e740_pcmcia_configure_socket, .socket_init = e740_pcmcia_socket_init, .socket_suspend = e740_pcmcia_socket_suspend, .nr = 2, }; static struct platform_device *e740_pcmcia_device; static int __init e740_pcmcia_init(void) { int ret; if (!machine_is_e740()) return -ENODEV; e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); if (!e740_pcmcia_device) return -ENOMEM; ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops, sizeof(e740_pcmcia_ops)); if (!ret) ret = platform_device_add(e740_pcmcia_device); if (ret) platform_device_put(e740_pcmcia_device); return ret; } static void __exit e740_pcmcia_exit(void) { platform_device_unregister(e740_pcmcia_device); } module_init(e740_pcmcia_init); module_exit(e740_pcmcia_exit); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Ian Molton <spyro@f2s.com>"); MODULE_ALIAS("platform:pxa2xx-pcmcia"); MODULE_DESCRIPTION("e740 PCMCIA platform support"); |