[mirror_ubuntu-jammy-kernel.git] / drivers / pcmcia / pxa2xx_cm_x270.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/drivers/pcmcia/pxa/pxa_cm_x270.c
 *
 * Compulab Ltd., 2003, 2007, 2008
 * Mike Rapoport <mike@compulab.co.il>
 */

#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/export.h>

#include "soc_common.h"

#define GPIO_PCMCIA_S0_CD_VALID	(84)
#define GPIO_PCMCIA_S0_RDYINT	(82)
#define GPIO_PCMCIA_RESET	(53)

static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
	if (ret)
		return ret;
	gpio_direction_output(GPIO_PCMCIA_RESET, 0);

	skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
	skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
	skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
	skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";

	return ret;
}

static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
{
	gpio_free(GPIO_PCMCIA_RESET);
}


static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
				       struct pcmcia_state *state)
{
	state->vs_3v  = 0;
	state->vs_Xv  = 0;
}


static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
					  const socket_state_t *state)
{
	switch (skt->nr) {
	case 0:
		if (state->flags & SS_RESET) {
			gpio_set_value(GPIO_PCMCIA_RESET, 1);
			udelay(10);
			gpio_set_value(GPIO_PCMCIA_RESET, 0);
		}
		break;
	}

	return 0;
}

static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
	.owner			= THIS_MODULE,
	.hw_init		= cmx270_pcmcia_hw_init,
	.hw_shutdown		= cmx270_pcmcia_shutdown,
	.socket_state		= cmx270_pcmcia_socket_state,
	.configure_socket	= cmx270_pcmcia_configure_socket,
	.nr			= 1,
};

static struct platform_device *cmx270_pcmcia_device;

int __init cmx270_pcmcia_init(void)
{
	int ret;

	cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);

	if (!cmx270_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
				       sizeof(cmx270_pcmcia_ops));

	if (ret == 0) {
		printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
		ret = platform_device_add(cmx270_pcmcia_device);
	}

	if (ret)
		platform_device_put(cmx270_pcmcia_device);

	return ret;
}

void __exit cmx270_pcmcia_exit(void)
{
	platform_device_unregister(cmx270_pcmcia_device);
}
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
87944f33 MR	2	/*
	3	* linux/drivers/pcmcia/pxa/pxa_cm_x270.c
	4	*
779c545d	5	* Compulab Ltd., 2003, 2007, 2008
87944f33	6	* Mike Rapoport <mike@compulab.co.il>
87944f33 MR	7	*/
87944f33 MR	8
87944f33 MR	9	#include <linux/platform_device.h>
	10	#include <linux/irq.h>
	11	#include <linux/delay.h>
779c545d	12	#include <linux/gpio.h>
402b20de	13	#include <linux/export.h>
87944f33	14
87944f33 MR	15	#include "soc_common.h"
87944f33 MR	16
779c545d MR	17	#define GPIO_PCMCIA_S0_CD_VALID (84)
	18	#define GPIO_PCMCIA_S0_RDYINT (82)
	19	#define GPIO_PCMCIA_RESET (53)
	20
87944f33 MR	21	static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
87944f33 MR	22	{
779c545d MR	23	int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
	24	if (ret)
	25	return ret;
	26	gpio_direction_output(GPIO_PCMCIA_RESET, 0);
	27
a9bb5a4b RK	28	skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
	29	skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
	30	skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
	31	skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
779c545d MR	32
779c545d MR	33	return ret;
87944f33 MR	34	}
	35
	36	static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
	37	{
779c545d	38	gpio_free(GPIO_PCMCIA_RESET);
87944f33 MR	39	}
	40
	41
	42	static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	43	struct pcmcia_state *state)
	44	{
87944f33 MR	45	state->vs_3v = 0;
87944f33 MR	46	state->vs_Xv = 0;
87944f33 MR	47	}
	48
	49
	50	static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	51	const socket_state_t *state)
	52	{
87944f33 MR	53	switch (skt->nr) {
	54	case 0:
	55	if (state->flags & SS_RESET) {
779c545d	56	gpio_set_value(GPIO_PCMCIA_RESET, 1);
87944f33	57	udelay(10);
779c545d	58	gpio_set_value(GPIO_PCMCIA_RESET, 0);
87944f33 MR	59	}
	60	break;
	61	}
	62
87944f33 MR	63	return 0;
	64	}
	65
4e5e8de0	66	static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
87944f33 MR	67	.owner = THIS_MODULE,
	68	.hw_init = cmx270_pcmcia_hw_init,
	69	.hw_shutdown = cmx270_pcmcia_shutdown,
	70	.socket_state = cmx270_pcmcia_socket_state,
	71	.configure_socket = cmx270_pcmcia_configure_socket,
779c545d	72	.nr = 1,
87944f33 MR	73	};
	74
	75	static struct platform_device *cmx270_pcmcia_device;
	76
8616e2fb	77	int __init cmx270_pcmcia_init(void)
87944f33 MR	78	{
	79	int ret;
	80
	81	cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	82
	83	if (!cmx270_pcmcia_device)
	84	return -ENOMEM;
	85
4e5e8de0 RK	86	ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
4e5e8de0 RK	87	sizeof(cmx270_pcmcia_ops));
87944f33	88
4e5e8de0 RK	89	if (ret == 0) {
	90	printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
	91	ret = platform_device_add(cmx270_pcmcia_device);
	92	}
87944f33 MR	93
	94	if (ret)
	95	platform_device_put(cmx270_pcmcia_device);
	96
	97	return ret;
	98	}
	99
8616e2fb	100	void __exit cmx270_pcmcia_exit(void)
87944f33 MR	101	{
	102	platform_device_unregister(cmx270_pcmcia_device);
	103	}