[linux-block.git] / drivers / pcmcia / sa1100_cerf.c

// SPDX-License-Identifier: GPL-2.0
/*
 * drivers/pcmcia/sa1100_cerf.c
 *
 * PCMCIA implementation routines for CerfBoard
 * Based off the Assabet.
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <mach/cerf.h>
#include "sa1100_generic.h"

#define CERF_SOCKET	1

static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int ret;

	ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET");
	if (ret)
		return ret;

	skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD;
	skt->stat[SOC_STAT_CD].name = "CF_CD";
	skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1;
	skt->stat[SOC_STAT_BVD1].name = "CF_BVD1";
	skt->stat[SOC_STAT_BVD2].gpio = CERF_GPIO_CF_BVD2;
	skt->stat[SOC_STAT_BVD2].name = "CF_BVD2";
	skt->stat[SOC_STAT_RDY].gpio = CERF_GPIO_CF_IRQ;
	skt->stat[SOC_STAT_RDY].name = "CF_IRQ";

	return 0;
}

static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	gpio_free(CERF_GPIO_CF_RESET);
}

static int
cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
			     const socket_state_t *state)
{
	switch (state->Vcc) {
	case 0:
	case 50:
	case 33:
		break;

	default:
		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
			__func__, state->Vcc);
		return -1;
	}

	gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET));

	return 0;
}

static struct pcmcia_low_level cerf_pcmcia_ops = { 
	.owner			= THIS_MODULE,
	.hw_init		= cerf_pcmcia_hw_init,
	.hw_shutdown		= cerf_pcmcia_hw_shutdown,
	.socket_state		= soc_common_cf_socket_state,
	.configure_socket	= cerf_pcmcia_configure_socket,
};

int pcmcia_cerf_init(struct device *dev)
{
	int ret = -ENODEV;

	if (machine_is_cerf())
		ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);

	return ret;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* drivers/pcmcia/sa1100_cerf.c
	4	*
	5	* PCMCIA implementation routines for CerfBoard
	6	* Based off the Assabet.
	7	*
	8	*/
1da177e4 LT	9	#include <linux/module.h>
1da177e4 LT	10	#include <linux/kernel.h>
1da177e4 LT	11	#include <linux/device.h>
	12	#include <linux/init.h>
	13	#include <linux/delay.h>
bbb58a12	14	#include <linux/gpio.h>
1da177e4	15
a09e64fb	16	#include <mach/hardware.h>
1da177e4 LT	17	#include <asm/mach-types.h>
1da177e4 LT	18	#include <asm/irq.h>
a09e64fb	19	#include <mach/cerf.h>
1da177e4 LT	20	#include "sa1100_generic.h"
	21
	22	#define CERF_SOCKET 1
	23
1da177e4 LT	24	static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
1da177e4 LT	25	{
bbb58a12 RK	26	int ret;
	27
	28	ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET");
	29	if (ret)
	30	return ret;
	31
f793e3ab RK	32	skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD;
	33	skt->stat[SOC_STAT_CD].name = "CF_CD";
	34	skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1;
	35	skt->stat[SOC_STAT_BVD1].name = "CF_BVD1";
	36	skt->stat[SOC_STAT_BVD2].gpio = CERF_GPIO_CF_BVD2;
	37	skt->stat[SOC_STAT_BVD2].name = "CF_BVD2";
	38	skt->stat[SOC_STAT_RDY].gpio = CERF_GPIO_CF_IRQ;
	39	skt->stat[SOC_STAT_RDY].name = "CF_IRQ";
1da177e4	40
f793e3ab	41	return 0;
1da177e4 LT	42	}
1da177e4 LT	43
bbb58a12 RK	44	static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	45	{
	46	gpio_free(CERF_GPIO_CF_RESET);
	47	}
	48
1da177e4 LT	49	static int
	50	cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	51	const socket_state_t *state)
	52	{
	53	switch (state->Vcc) {
	54	case 0:
	55	case 50:
	56	case 33:
	57	break;
	58
	59	default:
	60	printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
2e11cb4c	61	__func__, state->Vcc);
1da177e4 LT	62	return -1;
	63	}
	64
bbb58a12	65	gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET));
1da177e4 LT	66
	67	return 0;
	68	}
	69
1da177e4 LT	70	static struct pcmcia_low_level cerf_pcmcia_ops = {
	71	.owner = THIS_MODULE,
	72	.hw_init = cerf_pcmcia_hw_init,
bbb58a12	73	.hw_shutdown = cerf_pcmcia_hw_shutdown,
a1d05002	74	.socket_state = soc_common_cf_socket_state,
1da177e4	75	.configure_socket = cerf_pcmcia_configure_socket,
1da177e4 LT	76	};
1da177e4 LT	77
34cdf25a	78	int pcmcia_cerf_init(struct device *dev)
1da177e4 LT	79	{
	80	int ret = -ENODEV;
	81
	82	if (machine_is_cerf())
	83	ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
	84
	85	return ret;
	86	}