[mirror_ubuntu-bionic-kernel.git] / drivers / pcmcia / sa1100_shannon.c

// SPDX-License-Identifier: GPL-2.0
/*
 * drivers/pcmcia/sa1100_shannon.c
 *
 * PCMCIA implementation routines for Shannon
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/io.h>

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

static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	/* All those are inputs */
	GAFR &= ~(GPIO_GPIO(SHANNON_GPIO_EJECT_0) |
		  GPIO_GPIO(SHANNON_GPIO_EJECT_1) |
		  GPIO_GPIO(SHANNON_GPIO_RDY_0) |
		  GPIO_GPIO(SHANNON_GPIO_RDY_1));

	if (skt->nr == 0) {
		skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_0;
		skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_0";
		skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_0;
		skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_0";
	} else {
		skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_1;
		skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_1";
		skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_1;
		skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_1";
	}

	return 0;
}

static void
shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
			    struct pcmcia_state *state)
{
	switch (skt->nr) {
	case 0:
		state->bvd1   = 1; 
		state->bvd2   = 1; 
		state->vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
		state->vs_Xv  = 0;
		break;

	case 1:
		state->bvd1   = 1; 
		state->bvd2   = 1; 
		state->vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
		state->vs_Xv  = 0;
		break;
	}
}

static int
shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
				const socket_state_t *state)
{
	switch (state->Vcc) {
	case 0:	/* power off */
		printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __func__);
		break;
	case 50:
		printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __func__);
	case 33:
		break;
	default:
		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
		       __func__, state->Vcc);
		return -1;
	}

	printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __func__);
	
	/* Silently ignore Vpp, output enable, speaker enable. */

	return 0;
}

static struct pcmcia_low_level shannon_pcmcia_ops = {
	.owner			= THIS_MODULE,
	.hw_init		= shannon_pcmcia_hw_init,
	.socket_state		= shannon_pcmcia_socket_state,
	.configure_socket	= shannon_pcmcia_configure_socket,
};

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

	if (machine_is_shannon())
		ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2);

	return ret;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* drivers/pcmcia/sa1100_shannon.c
	4	*
	5	* PCMCIA implementation routines for Shannon
	6	*
	7	*/
	8	#include <linux/module.h>
	9	#include <linux/kernel.h>
1da177e4 LT	10	#include <linux/device.h>
1da177e4 LT	11	#include <linux/init.h>
3169663a	12	#include <linux/io.h>
1da177e4	13
a09e64fb	14	#include <mach/hardware.h>
1da177e4	15	#include <asm/mach-types.h>
a09e64fb	16	#include <mach/shannon.h>
1da177e4 LT	17	#include <asm/irq.h>
	18	#include "sa1100_generic.h"
	19
1da177e4 LT	20	static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	21	{
	22	/* All those are inputs */
3b61436a RK	23	GAFR &= ~(GPIO_GPIO(SHANNON_GPIO_EJECT_0) \|
	24	GPIO_GPIO(SHANNON_GPIO_EJECT_1) \|
	25	GPIO_GPIO(SHANNON_GPIO_RDY_0) \|
	26	GPIO_GPIO(SHANNON_GPIO_RDY_1));
	27
	28	if (skt->nr == 0) {
	29	skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_0;
	30	skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_0";
	31	skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_0;
	32	skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_0";
	33	} else {
	34	skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_1;
	35	skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_1";
	36	skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_1;
	37	skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_1";
	38	}
1da177e4	39
3b61436a	40	return 0;
1da177e4 LT	41	}
	42
	43	static void
	44	shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	45	struct pcmcia_state *state)
	46	{
1da177e4 LT	47	switch (skt->nr) {
1da177e4 LT	48	case 0:
1da177e4 LT	49	state->bvd1 = 1;
	50	state->bvd2 = 1;
	51	state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */
	52	state->vs_Xv = 0;
	53	break;
	54
	55	case 1:
1da177e4 LT	56	state->bvd1 = 1;
	57	state->bvd2 = 1;
	58	state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */
	59	state->vs_Xv = 0;
	60	break;
	61	}
	62	}
	63
	64	static int
	65	shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	66	const socket_state_t *state)
	67	{
	68	switch (state->Vcc) {
	69	case 0: /* power off */
2e11cb4c	70	printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __func__);
1da177e4 LT	71	break;
1da177e4 LT	72	case 50:
2e11cb4c	73	printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __func__);
1da177e4 LT	74	case 33:
	75	break;
	76	default:
	77	printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
2e11cb4c	78	__func__, state->Vcc);
1da177e4 LT	79	return -1;
	80	}
	81
2e11cb4c	82	printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __func__);
1da177e4 LT	83
	84	/* Silently ignore Vpp, output enable, speaker enable. */
	85
	86	return 0;
	87	}
	88
1da177e4 LT	89	static struct pcmcia_low_level shannon_pcmcia_ops = {
	90	.owner = THIS_MODULE,
	91	.hw_init = shannon_pcmcia_hw_init,
1da177e4 LT	92	.socket_state = shannon_pcmcia_socket_state,
1da177e4 LT	93	.configure_socket = shannon_pcmcia_configure_socket,
1da177e4 LT	94	};
1da177e4 LT	95
34cdf25a	96	int pcmcia_shannon_init(struct device *dev)
1da177e4 LT	97	{
	98	int ret = -ENODEV;
	99
	100	if (machine_is_shannon())
	101	ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2);
	102
	103	return ret;
	104	}