/* * linux/drivers/pcmcia/pxa2xx_trizeps4.c * * TRIZEPS PCMCIA specific routines. * * Author: Jürgen Schindele * Created: 20 02, 2006 * Copyright: Jürgen Schindele * * 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/module.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/gpio.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <asm/mach-types.h> #include <asm/irq.h> #include <mach/pxa2xx-regs.h> #include <mach/trizeps4.h> #include "soc_common.h" extern void board_pcmcia_power(int power); static int trizeps_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { /* we dont have voltage/card/ready detection * so we dont need interrupts for it */ switch (skt->nr) { case 0: skt->stat[SOC_STAT_CD].gpio = GPIO_PCD; skt->stat[SOC_STAT_CD].name = "cs0_cd"; skt->stat[SOC_STAT_RDY].gpio = GPIO_PRDY; skt->stat[SOC_STAT_RDY].name = "cs0_rdy"; break; default: break; } /* release the reset of this card */ pr_debug("%s: sock %d irq %d\n", __func__, skt->nr, skt->socket.pci_irq); return 0; } static unsigned long trizeps_pcmcia_status[2]; static void trizeps_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { unsigned short status = 0, change; status = CFSR_readw(); change = (status ^ trizeps_pcmcia_status[skt->nr]) & ConXS_CFSR_BVD_MASK; if (change) { trizeps_pcmcia_status[skt->nr] = status; if (status & ConXS_CFSR_BVD1) { /* enable_irq empty */ } else { /* disable_irq empty */ } } switch (skt->nr) { case 0: /* just fill in fix states */ state->bvd1 = (status & ConXS_CFSR_BVD1) ? 1 : 0; state->bvd2 = (status & ConXS_CFSR_BVD2) ? 1 : 0; state->vs_3v = (status & ConXS_CFSR_VS1) ? 0 : 1; state->vs_Xv = (status & ConXS_CFSR_VS2) ? 0 : 1; break; #ifndef CONFIG_MACH_TRIZEPS_CONXS /* on ConXS we only have one slot. Second is inactive */ case 1: state->detect = 0; state->ready = 0; state->bvd1 = 0; state->bvd2 = 0; state->vs_3v = 0; state->vs_Xv = 0; break; #endif } } static int trizeps_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { int ret = 0; unsigned short power = 0; /* we do nothing here just check a bit */ switch (state->Vcc) { case 0: power &= 0xfc; break; case 33: power |= ConXS_BCR_S0_VCC_3V3; break; case 50: pr_err("%s(): Vcc 5V not supported in socket\n", __func__); break; default: pr_err("%s(): bad Vcc %u\n", __func__, state->Vcc); ret = -1; } switch (state->Vpp) { case 0: power &= 0xf3; break; case 33: power |= ConXS_BCR_S0_VPP_3V3; break; case 120: pr_err("%s(): Vpp 12V not supported in socket\n", __func__); break; default: if (state->Vpp != state->Vcc) { pr_err("%s(): bad Vpp %u\n", __func__, state->Vpp); ret = -1; } } switch (skt->nr) { case 0: /* we only have 3.3V */ board_pcmcia_power(power); break; #ifndef CONFIG_MACH_TRIZEPS_CONXS /* on ConXS we only have one slot. Second is inactive */ case 1: #endif default: break; } return ret; } static void trizeps_pcmcia_socket_init(struct soc_pcmcia_socket *skt) { /* default is on */ board_pcmcia_power(0x9); } static void trizeps_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { board_pcmcia_power(0x0); } static struct pcmcia_low_level trizeps_pcmcia_ops = { .owner = THIS_MODULE, .hw_init = trizeps_pcmcia_hw_init, .socket_state = trizeps_pcmcia_socket_state, .configure_socket = trizeps_pcmcia_configure_socket, .socket_init = trizeps_pcmcia_socket_init, .socket_suspend = trizeps_pcmcia_socket_suspend, #ifdef CONFIG_MACH_TRIZEPS_CONXS .nr = 1, #else .nr = 2, #endif .first = 0, }; static struct platform_device *trizeps_pcmcia_device; static int __init trizeps_pcmcia_init(void) { int ret; if (!machine_is_trizeps4() && !machine_is_trizeps4wl()) return -ENODEV; trizeps_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); if (!trizeps_pcmcia_device) return -ENOMEM; ret = platform_device_add_data(trizeps_pcmcia_device, &trizeps_pcmcia_ops, sizeof(trizeps_pcmcia_ops)); if (ret == 0) ret = platform_device_add(trizeps_pcmcia_device); if (ret) platform_device_put(trizeps_pcmcia_device); return ret; } static void __exit trizeps_pcmcia_exit(void) { platform_device_unregister(trizeps_pcmcia_device); } fs_initcall(trizeps_pcmcia_init); module_exit(trizeps_pcmcia_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Juergen Schindele"); MODULE_ALIAS("platform:pxa2xx-pcmcia");