| /* |
| * linux/drivers/pcmcia/pxa/pxa_cm_x255.c |
| * |
| * 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. |
| * |
| * Compulab Ltd., 2003, 2007, 2008 |
| * Mike Rapoport <mike@compulab.co.il> |
| * |
| */ |
| |
| #include <linux/platform_device.h> |
| #include <linux/irq.h> |
| #include <linux/delay.h> |
| #include <linux/gpio.h> |
| |
| #include <asm/mach-types.h> |
| |
| #include "soc_common.h" |
| |
| #define GPIO_PCMCIA_SKTSEL (54) |
| #define GPIO_PCMCIA_S0_CD_VALID (16) |
| #define GPIO_PCMCIA_S1_CD_VALID (17) |
| #define GPIO_PCMCIA_S0_RDYINT (6) |
| #define GPIO_PCMCIA_S1_RDYINT (8) |
| #define GPIO_PCMCIA_RESET (9) |
| |
| #define PCMCIA_S0_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID) |
| #define PCMCIA_S1_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S1_CD_VALID) |
| #define PCMCIA_S0_RDYINT IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT) |
| #define PCMCIA_S1_RDYINT IRQ_GPIO(GPIO_PCMCIA_S1_RDYINT) |
| |
| |
| static struct pcmcia_irqs irqs[] = { |
| { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" }, |
| { 1, PCMCIA_S1_CD_VALID, "PCMCIA1 CD" }, |
| }; |
| |
| static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
| { |
| int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset"); |
| if (ret) |
| return ret; |
| gpio_direction_output(GPIO_PCMCIA_RESET, 0); |
| |
| skt->irq = skt->nr == 0 ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT; |
| ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
| if (!ret) |
| gpio_free(GPIO_PCMCIA_RESET); |
| |
| return ret; |
| } |
| |
| static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt) |
| { |
| soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
| gpio_free(GPIO_PCMCIA_RESET); |
| } |
| |
| |
| static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
| struct pcmcia_state *state) |
| { |
| int cd = skt->nr ? GPIO_PCMCIA_S1_CD_VALID : GPIO_PCMCIA_S0_CD_VALID; |
| int rdy = skt->nr ? GPIO_PCMCIA_S0_RDYINT : GPIO_PCMCIA_S1_RDYINT; |
| |
| state->detect = !gpio_get_value(cd); |
| state->ready = !!gpio_get_value(rdy); |
| state->bvd1 = 1; |
| state->bvd2 = 1; |
| state->vs_3v = 0; |
| state->vs_Xv = 0; |
| state->wrprot = 0; /* not available */ |
| } |
| |
| |
| static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
| const socket_state_t *state) |
| { |
| switch (skt->nr) { |
| case 0: |
| if (state->flags & SS_RESET) { |
| gpio_set_value(GPIO_PCMCIA_SKTSEL, 0); |
| udelay(1); |
| gpio_set_value(GPIO_PCMCIA_RESET, 1); |
| udelay(10); |
| gpio_set_value(GPIO_PCMCIA_RESET, 0); |
| } |
| break; |
| case 1: |
| if (state->flags & SS_RESET) { |
| gpio_set_value(GPIO_PCMCIA_SKTSEL, 1); |
| udelay(1); |
| gpio_set_value(GPIO_PCMCIA_RESET, 1); |
| udelay(10); |
| gpio_set_value(GPIO_PCMCIA_RESET, 0); |
| } |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static void cmx255_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
| { |
| } |
| |
| static void cmx255_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
| { |
| } |
| |
| |
| static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = { |
| .owner = THIS_MODULE, |
| .hw_init = cmx255_pcmcia_hw_init, |
| .hw_shutdown = cmx255_pcmcia_shutdown, |
| .socket_state = cmx255_pcmcia_socket_state, |
| .configure_socket = cmx255_pcmcia_configure_socket, |
| .socket_init = cmx255_pcmcia_socket_init, |
| .socket_suspend = cmx255_pcmcia_socket_suspend, |
| .nr = 1, |
| }; |
| |
| static struct platform_device *cmx255_pcmcia_device; |
| |
| int __init cmx255_pcmcia_init(void) |
| { |
| int ret; |
| |
| cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
| |
| if (!cmx255_pcmcia_device) |
| return -ENOMEM; |
| |
| ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops, |
| sizeof(cmx255_pcmcia_ops)); |
| |
| if (ret == 0) { |
| printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n"); |
| ret = platform_device_add(cmx255_pcmcia_device); |
| } |
| |
| if (ret) |
| platform_device_put(cmx255_pcmcia_device); |
| |
| return ret; |
| } |
| |
| void __exit cmx255_pcmcia_exit(void) |
| { |
| platform_device_unregister(cmx255_pcmcia_device); |
| } |