[linux-block.git] / drivers / pcmcia / sa1100_assabet.c

// SPDX-License-Identifier: GPL-2.0
/*
 * drivers/pcmcia/sa1100_assabet.c
 *
 * PCMCIA implementation routines for Assabet
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/gpio.h>

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

#include "sa1100_generic.h"

static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD;
	skt->stat[SOC_STAT_CD].name = "CF CD";
	skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1;
	skt->stat[SOC_STAT_BVD1].name = "CF BVD1";
	skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2;
	skt->stat[SOC_STAT_BVD2].name = "CF BVD2";
	skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ;
	skt->stat[SOC_STAT_RDY].name = "CF RDY";

	return 0;
}

static int
assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
	unsigned int mask;

	switch (state->Vcc) {
	case 0:
		mask = 0;
		break;

	case 50:
		printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
			__func__);

	case 33:  /* Can only apply 3.3V to the CF slot. */
		mask = ASSABET_BCR_CF_PWR;
		break;

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

	/* Silently ignore Vpp, speaker enable. */

	if (state->flags & SS_RESET)
		mask |= ASSABET_BCR_CF_RST;
	if (!(state->flags & SS_OUTPUT_ENA))
		mask |= ASSABET_BCR_CF_BUS_OFF;

	ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR |
			ASSABET_BCR_CF_BUS_OFF, mask);

	return 0;
}

/*
 * Disable card status IRQs on suspend.
 */
static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	/*
	 * Tristate the CF bus signals.  Also assert CF
	 * reset as per user guide page 4-11.
	 */
	ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
}

static struct pcmcia_low_level assabet_pcmcia_ops = { 
	.owner			= THIS_MODULE,
	.hw_init		= assabet_pcmcia_hw_init,
	.socket_state		= soc_common_cf_socket_state,
	.configure_socket	= assabet_pcmcia_configure_socket,
	.socket_suspend		= assabet_pcmcia_socket_suspend,
};

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

	if (machine_is_assabet() && !machine_has_neponset())
		ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);

	return ret;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* drivers/pcmcia/sa1100_assabet.c
	4	*
	5	* PCMCIA implementation routines for Assabet
	6	*
	7	*/
	8	#include <linux/module.h>
	9	#include <linux/kernel.h>
	10	#include <linux/errno.h>
	11	#include <linux/interrupt.h>
	12	#include <linux/device.h>
	13	#include <linux/init.h>
03e0092c	14	#include <linux/gpio.h>
1da177e4	15
1da177e4	16	#include <asm/mach-types.h>
a09e64fb	17	#include <mach/assabet.h>
1da177e4 LT	18
	19	#include "sa1100_generic.h"
	20
1da177e4 LT	21	static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
1da177e4 LT	22	{
03e0092c RK	23	skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD;
	24	skt->stat[SOC_STAT_CD].name = "CF CD";
	25	skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1;
	26	skt->stat[SOC_STAT_BVD1].name = "CF BVD1";
	27	skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2;
	28	skt->stat[SOC_STAT_BVD2].name = "CF BVD2";
	29	skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ;
	30	skt->stat[SOC_STAT_RDY].name = "CF RDY";
1da177e4	31
03e0092c	32	return 0;
1da177e4 LT	33	}
1da177e4 LT	34
1da177e4 LT	35	static int
	36	assabet_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	37	{
	38	unsigned int mask;
	39
	40	switch (state->Vcc) {
	41	case 0:
	42	mask = 0;
	43	break;
	44
	45	case 50:
	46	printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
2e11cb4c	47	__func__);
1da177e4 LT	48
	49	case 33: /* Can only apply 3.3V to the CF slot. */
	50	mask = ASSABET_BCR_CF_PWR;
	51	break;
	52
	53	default:
2e11cb4c	54	printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__,
1da177e4 LT	55	state->Vcc);
	56	return -1;
	57	}
	58
03e0092c	59	/* Silently ignore Vpp, speaker enable. */
1da177e4 LT	60
	61	if (state->flags & SS_RESET)
	62	mask \|= ASSABET_BCR_CF_RST;
03e0092c RK	63	if (!(state->flags & SS_OUTPUT_ENA))
03e0092c RK	64	mask \|= ASSABET_BCR_CF_BUS_OFF;
1da177e4	65
03e0092c RK	66	ASSABET_BCR_frob(ASSABET_BCR_CF_RST \| ASSABET_BCR_CF_PWR \|
03e0092c RK	67	ASSABET_BCR_CF_BUS_OFF, mask);
1da177e4 LT	68
	69	return 0;
	70	}
	71
1da177e4 LT	72	/*
	73	* Disable card status IRQs on suspend.
	74	*/
	75	static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	76	{
1da177e4 LT	77	/*
	78	* Tristate the CF bus signals. Also assert CF
	79	* reset as per user guide page 4-11.
	80	*/
	81	ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF \| ASSABET_BCR_CF_RST);
	82	}
	83
	84	static struct pcmcia_low_level assabet_pcmcia_ops = {
	85	.owner = THIS_MODULE,
1da177e4	86	.hw_init = assabet_pcmcia_hw_init,
a1d05002	87	.socket_state = soc_common_cf_socket_state,
1da177e4	88	.configure_socket = assabet_pcmcia_configure_socket,
1da177e4 LT	89	.socket_suspend = assabet_pcmcia_socket_suspend,
	90	};
	91
34cdf25a	92	int pcmcia_assabet_init(struct device *dev)
1da177e4 LT	93	{
	94	int ret = -ENODEV;
	95
	96	if (machine_is_assabet() && !machine_has_neponset())
	97	ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
	98
	99	return ret;
	100	}