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137 lines
3.3 KiB
137 lines
3.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/drivers/pcmcia/pxa2xx_vpac270.c |
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* |
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* Driver for Voipac PXA270 PCMCIA and CF sockets |
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* |
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* Copyright (C) 2010-2011 Marek Vasut <[email protected]> |
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*/ |
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#include <linux/gpio.h> |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <asm/mach-types.h> |
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#include <mach/vpac270.h> |
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#include "soc_common.h" |
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static struct gpio vpac270_pcmcia_gpios[] = { |
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{ GPIO107_VPAC270_PCMCIA_PPEN, GPIOF_INIT_LOW, "PCMCIA PPEN" }, |
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{ GPIO11_VPAC270_PCMCIA_RESET, GPIOF_INIT_LOW, "PCMCIA Reset" }, |
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}; |
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static struct gpio vpac270_cf_gpios[] = { |
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{ GPIO16_VPAC270_CF_RESET, GPIOF_INIT_LOW, "CF Reset" }, |
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}; |
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static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
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{ |
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int ret; |
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if (skt->nr == 0) { |
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ret = gpio_request_array(vpac270_pcmcia_gpios, |
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ARRAY_SIZE(vpac270_pcmcia_gpios)); |
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skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD; |
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skt->stat[SOC_STAT_CD].name = "PCMCIA CD"; |
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skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY; |
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skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready"; |
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} else { |
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ret = gpio_request_array(vpac270_cf_gpios, |
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ARRAY_SIZE(vpac270_cf_gpios)); |
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skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD; |
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skt->stat[SOC_STAT_CD].name = "CF CD"; |
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skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY; |
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skt->stat[SOC_STAT_RDY].name = "CF Ready"; |
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} |
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return ret; |
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} |
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static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
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{ |
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if (skt->nr == 0) |
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gpio_free_array(vpac270_pcmcia_gpios, |
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ARRAY_SIZE(vpac270_pcmcia_gpios)); |
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else |
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gpio_free_array(vpac270_cf_gpios, |
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ARRAY_SIZE(vpac270_cf_gpios)); |
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} |
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static void vpac270_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 = 1; |
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state->vs_Xv = 0; |
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} |
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static int |
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vpac270_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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if (skt->nr == 0) { |
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gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET, |
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(state->flags & SS_RESET)); |
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gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN, |
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!(state->Vcc == 33 || state->Vcc == 50)); |
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} else { |
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gpio_set_value(GPIO16_VPAC270_CF_RESET, |
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(state->flags & SS_RESET)); |
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} |
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return 0; |
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} |
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static struct pcmcia_low_level vpac270_pcmcia_ops = { |
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.owner = THIS_MODULE, |
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.first = 0, |
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.nr = 2, |
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.hw_init = vpac270_pcmcia_hw_init, |
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.hw_shutdown = vpac270_pcmcia_hw_shutdown, |
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.socket_state = vpac270_pcmcia_socket_state, |
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.configure_socket = vpac270_pcmcia_configure_socket, |
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}; |
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static struct platform_device *vpac270_pcmcia_device; |
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static int __init vpac270_pcmcia_init(void) |
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{ |
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int ret; |
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if (!machine_is_vpac270()) |
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return -ENODEV; |
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vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
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if (!vpac270_pcmcia_device) |
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return -ENOMEM; |
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ret = platform_device_add_data(vpac270_pcmcia_device, |
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&vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops)); |
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if (!ret) |
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ret = platform_device_add(vpac270_pcmcia_device); |
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if (ret) |
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platform_device_put(vpac270_pcmcia_device); |
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return ret; |
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} |
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static void __exit vpac270_pcmcia_exit(void) |
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{ |
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platform_device_unregister(vpac270_pcmcia_device); |
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} |
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module_init(vpac270_pcmcia_init); |
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module_exit(vpac270_pcmcia_exit); |
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MODULE_AUTHOR("Marek Vasut <[email protected]>"); |
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MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270"); |
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MODULE_ALIAS("platform:pxa2xx-pcmcia"); |
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MODULE_LICENSE("GPL");
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