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Release 4.14 drivers/pcmcia/sa1100_nanoengine.c

Directory: drivers/pcmcia
/*
 * drivers/pcmcia/sa1100_nanoengine.c
 *
 * PCMCIA implementation routines for BSI nanoEngine.
 *
 * In order to have a fully functional pcmcia subsystem in a BSE nanoEngine
 * board you should carefully read this:
 * http://cambuca.ldhs.cetuc.puc-rio.br/nanoengine/
 *
 * Copyright (C) 2010 Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
 *
 * Based on original work for kernel 2.4 by
 * Miguel Freitas <miguel@cpti.cetuc.puc-rio.br>
 *
 * 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/device.h>
#include <linux/errno.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/signal.h>

#include <asm/mach-types.h>
#include <asm/irq.h>

#include <mach/hardware.h>
#include <mach/nanoengine.h>

#include "sa1100_generic.h"


struct nanoengine_pins {
	
unsigned output_pins;
	
unsigned clear_outputs;
	
int gpio_rst;
	
int gpio_cd;
	
int gpio_rdy;
};


static struct nanoengine_pins nano_skts[] = {
	{
		.gpio_rst		= GPIO_PC_RESET0,
		.gpio_cd		= GPIO_PC_CD0,
		.gpio_rdy		= GPIO_PC_READY0,
        }, {
		.gpio_rst		= GPIO_PC_RESET1,
		.gpio_cd		= GPIO_PC_CD1,
		.gpio_rdy		= GPIO_PC_READY1,
        }
};


unsigned num_nano_pcmcia_sockets = ARRAY_SIZE(nano_skts);


static int nanoengine_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { unsigned i = skt->nr; int ret; if (i >= num_nano_pcmcia_sockets) return -ENXIO; ret = gpio_request_one(nano_skts[i].gpio_rst, GPIOF_OUT_INIT_LOW, i ? "PC RST1" : "PC RST0"); if (ret) return ret; skt->stat[SOC_STAT_CD].gpio = nano_skts[i].gpio_cd; skt->stat[SOC_STAT_CD].name = i ? "PC CD1" : "PC CD0"; skt->stat[SOC_STAT_RDY].gpio = nano_skts[i].gpio_rdy; skt->stat[SOC_STAT_RDY].name = i ? "PC RDY1" : "PC RDY0"; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Marcelo Roberto Jimenez6351.22%133.33%
Russell King6048.78%266.67%
Total123100.00%3100.00%


static void nanoengine_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) { gpio_free(nano_skts[skt->nr].gpio_rst); }

Contributors

PersonTokensPropCommitsCommitProp
Russell King23100.00%1100.00%
Total23100.00%1100.00%


static int nanoengine_pcmcia_configure_socket( struct soc_pcmcia_socket *skt, const socket_state_t *state) { unsigned i = skt->nr; if (i >= num_nano_pcmcia_sockets) return -ENXIO; gpio_set_value(nano_skts[skt->nr].gpio_rst, !!(state->flags & SS_RESET)); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Marcelo Roberto Jimenez4272.41%150.00%
Russell King1627.59%150.00%
Total58100.00%2100.00%


static void nanoengine_pcmcia_socket_state( struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { unsigned i = skt->nr; if (i >= num_nano_pcmcia_sockets) return; state->bvd1 = 1; state->bvd2 = 1; state->vs_3v = 1; /* Can only apply 3.3V */ state->vs_Xv = 0; }

Contributors

PersonTokensPropCommitsCommitProp
Marcelo Roberto Jimenez55100.00%1100.00%
Total55100.00%1100.00%

static struct pcmcia_low_level nanoengine_pcmcia_ops = { .owner = THIS_MODULE, .hw_init = nanoengine_pcmcia_hw_init, .hw_shutdown = nanoengine_pcmcia_hw_shutdown, .configure_socket = nanoengine_pcmcia_configure_socket, .socket_state = nanoengine_pcmcia_socket_state, };
int pcmcia_nanoengine_init(struct device *dev) { int ret = -ENODEV; if (machine_is_nanoengine()) ret = sa11xx_drv_pcmcia_probe( dev, &nanoengine_pcmcia_ops, 0, 2); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Marcelo Roberto Jimenez38100.00%1100.00%
Total38100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Marcelo Roberto Jimenez31671.49%133.33%
Russell King12628.51%266.67%
Total442100.00%3100.00%
Directory: drivers/pcmcia
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