[mirror_ubuntu-zesty-kernel.git] / drivers / pcmcia / sa1100_assabet.c

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