[mirror_ubuntu-hirsute-kernel.git] / drivers / pcmcia / sa1100_simpad.c

// SPDX-License-Identifier: GPL-2.0
/*
 * drivers/pcmcia/sa1100_simpad.c
 *
 * PCMCIA implementation routines for simpad
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/init.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <mach/simpad.h>
#include "sa1100_generic.h"
 
static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{

	simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);

	skt->stat[SOC_STAT_CD].name = "cf-detect";
	skt->stat[SOC_STAT_RDY].name = "cf-ready";

	return soc_pcmcia_request_gpiods(skt);
}

static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	/* Disable CF bus: */
	/*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/
	simpad_clear_cs3_bit(PCMCIA_RESET);
}

static void
simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
			   struct pcmcia_state *state)
{
	long cs3reg = simpad_get_cs3_ro();

	/* bvd1 might be cs3reg & PCMCIA_BVD1 */
	/* bvd2 might be cs3reg & PCMCIA_BVD2 */

	if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) ==
			(PCMCIA_VS1|PCMCIA_VS2)) {
		state->vs_3v=0;
		state->vs_Xv=0;
	} else {
		state->vs_3v=1;
		state->vs_Xv=0;
	}
}

static int
simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
			       const socket_state_t *state)
{
	unsigned long flags;

	local_irq_save(flags);

	/* Murphy: see table of MIC2562a-1 */
	switch (state->Vcc) {
	case 0:
		simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
		break;

	case 33:  
		simpad_clear_cs3_bit(VCC_3V_EN|EN1);
		simpad_set_cs3_bit(VCC_5V_EN|EN0);
		break;

	case 50:
		simpad_clear_cs3_bit(VCC_5V_EN|EN1);
		simpad_set_cs3_bit(VCC_3V_EN|EN0);
		break;

	default:
		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
			__func__, state->Vcc);
		simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
		local_irq_restore(flags);
		return -1;
	}


	local_irq_restore(flags);

	return 0;
}

static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	simpad_set_cs3_bit(PCMCIA_RESET);
}

static struct pcmcia_low_level simpad_pcmcia_ops = { 
	.owner			= THIS_MODULE,
	.hw_init		= simpad_pcmcia_hw_init,
	.hw_shutdown		= simpad_pcmcia_hw_shutdown,
	.socket_state		= simpad_pcmcia_socket_state,
	.configure_socket	= simpad_pcmcia_configure_socket,
	.socket_suspend		= simpad_pcmcia_socket_suspend,
};

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

	if (machine_is_simpad())
		ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);

	return ret;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* drivers/pcmcia/sa1100_simpad.c
	4	*
	5	* PCMCIA implementation routines for simpad
	6	*
	7	*/
	8	#include <linux/module.h>
	9	#include <linux/kernel.h>
1da177e4 LT	10	#include <linux/device.h>
	11	#include <linux/init.h>
	12
a09e64fb	13	#include <mach/hardware.h>
1da177e4	14	#include <asm/mach-types.h>
a09e64fb	15	#include <mach/simpad.h>
1da177e4 LT	16	#include "sa1100_generic.h"
1da177e4 LT	17
1da177e4 LT	18	static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	19	{
	20
de0bc0d1	21	simpad_clear_cs3_bit(VCC_3V_EN\|VCC_5V_EN\|EN0\|EN1);
1da177e4	22
64b2f129 RK	23	skt->stat[SOC_STAT_CD].name = "cf-detect";
64b2f129 RK	24	skt->stat[SOC_STAT_RDY].name = "cf-ready";
1da177e4	25
64b2f129	26	return soc_pcmcia_request_gpiods(skt);
1da177e4 LT	27	}
	28
	29	static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	30	{
1da177e4	31	/* Disable CF bus: */
de0bc0d1 JF	32	/simpad_set_cs3_bit(PCMCIA_BUFF_DIS);/
de0bc0d1 JF	33	simpad_clear_cs3_bit(PCMCIA_RESET);
1da177e4 LT	34	}
	35
	36	static void
	37	simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	38	struct pcmcia_state *state)
	39	{
de0bc0d1	40	long cs3reg = simpad_get_cs3_ro();
1da177e4	41
57c1cdce RK	42	/* bvd1 might be cs3reg & PCMCIA_BVD1 */
57c1cdce RK	43	/* bvd2 might be cs3reg & PCMCIA_BVD2 */
de0bc0d1 JF	44
	45	if ((cs3reg & (PCMCIA_VS1\|PCMCIA_VS2)) ==
	46	(PCMCIA_VS1\|PCMCIA_VS2)) {
1da177e4 LT	47	state->vs_3v=0;
	48	state->vs_Xv=0;
	49	} else {
	50	state->vs_3v=1;
	51	state->vs_Xv=0;
	52	}
	53	}
	54
	55	static int
	56	simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	57	const socket_state_t *state)
	58	{
	59	unsigned long flags;
	60
	61	local_irq_save(flags);
	62
	63	/* Murphy: see table of MIC2562a-1 */
	64	switch (state->Vcc) {
	65	case 0:
de0bc0d1	66	simpad_clear_cs3_bit(VCC_3V_EN\|VCC_5V_EN\|EN0\|EN1);
1da177e4 LT	67	break;
	68
	69	case 33:
de0bc0d1 JF	70	simpad_clear_cs3_bit(VCC_3V_EN\|EN1);
de0bc0d1 JF	71	simpad_set_cs3_bit(VCC_5V_EN\|EN0);
1da177e4 LT	72	break;
	73
	74	case 50:
de0bc0d1 JF	75	simpad_clear_cs3_bit(VCC_5V_EN\|EN1);
de0bc0d1 JF	76	simpad_set_cs3_bit(VCC_3V_EN\|EN0);
1da177e4 LT	77	break;
	78
	79	default:
	80	printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
2e11cb4c	81	__func__, state->Vcc);
de0bc0d1	82	simpad_clear_cs3_bit(VCC_3V_EN\|VCC_5V_EN\|EN0\|EN1);
1da177e4 LT	83	local_irq_restore(flags);
	84	return -1;
	85	}
	86
	87
	88	local_irq_restore(flags);
	89
	90	return 0;
	91	}
	92
1da177e4 LT	93	static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
1da177e4 LT	94	{
de0bc0d1	95	simpad_set_cs3_bit(PCMCIA_RESET);
1da177e4 LT	96	}
	97
	98	static struct pcmcia_low_level simpad_pcmcia_ops = {
	99	.owner = THIS_MODULE,
	100	.hw_init = simpad_pcmcia_hw_init,
	101	.hw_shutdown = simpad_pcmcia_hw_shutdown,
	102	.socket_state = simpad_pcmcia_socket_state,
	103	.configure_socket = simpad_pcmcia_configure_socket,
1da177e4 LT	104	.socket_suspend = simpad_pcmcia_socket_suspend,
	105	};
	106
34cdf25a	107	int pcmcia_simpad_init(struct device *dev)
1da177e4 LT	108	{
	109	int ret = -ENODEV;
	110
	111	if (machine_is_simpad())
	112	ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);
	113
	114	return ret;
	115	}