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124 lines
2.9 KiB
124 lines
2.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/drivers/pcmcia/pxa/pxa_cm_x255.c |
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* |
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* Compulab Ltd., 2003, 2007, 2008 |
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* Mike Rapoport <[email protected]> |
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*/ |
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#include <linux/platform_device.h> |
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#include <linux/irq.h> |
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#include <linux/delay.h> |
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#include <linux/gpio.h> |
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#include <linux/export.h> |
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#include "soc_common.h" |
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#define GPIO_PCMCIA_SKTSEL (54) |
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#define GPIO_PCMCIA_S0_CD_VALID (16) |
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#define GPIO_PCMCIA_S1_CD_VALID (17) |
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#define GPIO_PCMCIA_S0_RDYINT (6) |
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#define GPIO_PCMCIA_S1_RDYINT (8) |
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#define GPIO_PCMCIA_RESET (9) |
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static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
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{ |
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int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset"); |
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if (ret) |
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return ret; |
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gpio_direction_output(GPIO_PCMCIA_RESET, 0); |
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if (skt->nr == 0) { |
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skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID; |
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skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD"; |
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skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT; |
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skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY"; |
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} else { |
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skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S1_CD_VALID; |
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skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD"; |
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skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S1_RDYINT; |
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skt->stat[SOC_STAT_RDY].name = "PCMCIA1 RDY"; |
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} |
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return 0; |
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} |
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static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt) |
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{ |
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gpio_free(GPIO_PCMCIA_RESET); |
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} |
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static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
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struct pcmcia_state *state) |
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{ |
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state->vs_3v = 0; |
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state->vs_Xv = 0; |
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} |
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static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
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const socket_state_t *state) |
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{ |
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switch (skt->nr) { |
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case 0: |
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if (state->flags & SS_RESET) { |
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gpio_set_value(GPIO_PCMCIA_SKTSEL, 0); |
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udelay(1); |
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gpio_set_value(GPIO_PCMCIA_RESET, 1); |
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udelay(10); |
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gpio_set_value(GPIO_PCMCIA_RESET, 0); |
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} |
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break; |
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case 1: |
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if (state->flags & SS_RESET) { |
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gpio_set_value(GPIO_PCMCIA_SKTSEL, 1); |
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udelay(1); |
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gpio_set_value(GPIO_PCMCIA_RESET, 1); |
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udelay(10); |
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gpio_set_value(GPIO_PCMCIA_RESET, 0); |
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} |
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break; |
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} |
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return 0; |
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} |
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static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = { |
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.owner = THIS_MODULE, |
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.hw_init = cmx255_pcmcia_hw_init, |
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.hw_shutdown = cmx255_pcmcia_shutdown, |
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.socket_state = cmx255_pcmcia_socket_state, |
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.configure_socket = cmx255_pcmcia_configure_socket, |
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.nr = 1, |
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}; |
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static struct platform_device *cmx255_pcmcia_device; |
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int __init cmx255_pcmcia_init(void) |
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{ |
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int ret; |
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cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
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if (!cmx255_pcmcia_device) |
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return -ENOMEM; |
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ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops, |
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sizeof(cmx255_pcmcia_ops)); |
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if (ret == 0) { |
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printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n"); |
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ret = platform_device_add(cmx255_pcmcia_device); |
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} |
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if (ret) |
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platform_device_put(cmx255_pcmcia_device); |
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return ret; |
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} |
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void __exit cmx255_pcmcia_exit(void) |
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{ |
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platform_device_unregister(cmx255_pcmcia_device); |
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}
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