[deliverable/linux.git] / drivers / pcmcia / pxa2xx_trizeps4.c

/*
 * linux/drivers/pcmcia/pxa2xx_trizeps4.c
 *
 * TRIZEPS PCMCIA specific routines.
 *
 * Author:	Jürgen Schindele
 * Created:	20 02, 2006
 * Copyright:	Jürgen Schindele
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>

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

#include <mach/pxa2xx-regs.h>
#include <mach/trizeps4.h>

#include "soc_common.h"

extern void board_pcmcia_power(int power);

static int trizeps_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	/* we dont have voltage/card/ready detection
	 * so we dont need interrupts for it
	 */
	switch (skt->nr) {
	case 0:
		skt->stat[SOC_STAT_CD].gpio = GPIO_PCD;
		skt->stat[SOC_STAT_CD].name = "cs0_cd";
		skt->stat[SOC_STAT_RDY].gpio = GPIO_PRDY;
		skt->stat[SOC_STAT_RDY].name = "cs0_rdy";
		break;
	default:
		break;
	}
	/* release the reset of this card */
	pr_debug("%s: sock %d irq %d\n", __func__, skt->nr, skt->socket.pci_irq);

	return 0;
}

static unsigned long trizeps_pcmcia_status[2];

static void trizeps_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
				struct pcmcia_state *state)
{
	unsigned short status = 0, change;
	status = CFSR_readw();
	change = (status ^ trizeps_pcmcia_status[skt->nr]) &
				ConXS_CFSR_BVD_MASK;
	if (change) {
		trizeps_pcmcia_status[skt->nr] = status;
		if (status & ConXS_CFSR_BVD1) {
			/* enable_irq empty */
		} else {
			/* disable_irq empty */
		}
	}

	switch (skt->nr) {
	case 0:
		/* just fill in fix states */
		state->bvd1   = (status & ConXS_CFSR_BVD1) ? 1 : 0;
		state->bvd2   = (status & ConXS_CFSR_BVD2) ? 1 : 0;
		state->vs_3v  = (status & ConXS_CFSR_VS1) ? 0 : 1;
		state->vs_Xv  = (status & ConXS_CFSR_VS2) ? 0 : 1;
		break;

#ifndef CONFIG_MACH_TRIZEPS_CONXS
	/* on ConXS we only have one slot. Second is inactive */
	case 1:
		state->detect = 0;
		state->ready  = 0;
		state->bvd1   = 0;
		state->bvd2   = 0;
		state->vs_3v  = 0;
		state->vs_Xv  = 0;
		break;

#endif
	}
}

static int trizeps_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
				const socket_state_t *state)
{
	int ret = 0;
	unsigned short power = 0;

	/* we do nothing here just check a bit */
	switch (state->Vcc) {
	case 0:  power &= 0xfc; break;
	case 33: power |= ConXS_BCR_S0_VCC_3V3; break;
	case 50:
		pr_err("%s(): Vcc 5V not supported in socket\n", __func__);
		break;
	default:
		pr_err("%s(): bad Vcc %u\n", __func__, state->Vcc);
		ret = -1;
	}

	switch (state->Vpp) {
	case 0:  power &= 0xf3; break;
	case 33: power |= ConXS_BCR_S0_VPP_3V3; break;
	case 120:
		pr_err("%s(): Vpp 12V not supported in socket\n", __func__);
		break;
	default:
		if (state->Vpp != state->Vcc) {
			pr_err("%s(): bad Vpp %u\n", __func__, state->Vpp);
			ret = -1;
		}
	}

	switch (skt->nr) {
	case 0:			 /* we only have 3.3V */
		board_pcmcia_power(power);
		break;

#ifndef CONFIG_MACH_TRIZEPS_CONXS
	/* on ConXS we only have one slot. Second is inactive */
	case 1:
#endif
	default:
		break;
	}

	return ret;
}

static void trizeps_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
	/* default is on */
	board_pcmcia_power(0x9);
}

static void trizeps_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	board_pcmcia_power(0x0);
}

static struct pcmcia_low_level trizeps_pcmcia_ops = {
	.owner			= THIS_MODULE,
	.hw_init		= trizeps_pcmcia_hw_init,
	.socket_state		= trizeps_pcmcia_socket_state,
	.configure_socket	= trizeps_pcmcia_configure_socket,
	.socket_init		= trizeps_pcmcia_socket_init,
	.socket_suspend		= trizeps_pcmcia_socket_suspend,
#ifdef CONFIG_MACH_TRIZEPS_CONXS
	.nr			= 1,
#else
	.nr			= 2,
#endif
	.first			= 0,
};

static struct platform_device *trizeps_pcmcia_device;

static int __init trizeps_pcmcia_init(void)
{
	int ret;

	if (!machine_is_trizeps4() && !machine_is_trizeps4wl())
		return -ENODEV;

	trizeps_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	if (!trizeps_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(trizeps_pcmcia_device,
			&trizeps_pcmcia_ops, sizeof(trizeps_pcmcia_ops));

	if (ret == 0)
		ret = platform_device_add(trizeps_pcmcia_device);

	if (ret)
		platform_device_put(trizeps_pcmcia_device);

	return ret;
}

static void __exit trizeps_pcmcia_exit(void)
{
	platform_device_unregister(trizeps_pcmcia_device);
}

fs_initcall(trizeps_pcmcia_init);
module_exit(trizeps_pcmcia_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Juergen Schindele");
MODULE_ALIAS("platform:pxa2xx-pcmcia");
Commit	Line	Data
2efa42f2 JS	1	/*
	2	* linux/drivers/pcmcia/pxa2xx_trizeps4.c
	3	*
	4	* TRIZEPS PCMCIA specific routines.
	5	*
	6	* Author: Jürgen Schindele
	7	* Created: 20 02, 2006
	8	* Copyright: Jürgen Schindele
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*/
	14
	15	#include <linux/module.h>
	16	#include <linux/init.h>
	17	#include <linux/kernel.h>
	18	#include <linux/gpio.h>
	19	#include <linux/interrupt.h>
	20	#include <linux/platform_device.h>
	21
	22	#include <asm/mach-types.h>
	23	#include <asm/irq.h>
	24
b74d1969	25	#include <mach/pxa2xx-regs.h>
2efa42f2 JS	26	#include <mach/trizeps4.h>
	27
	28	#include "soc_common.h"
	29
	30	extern void board_pcmcia_power(int power);
	31
2efa42f2 JS	32	static int trizeps_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
2efa42f2 JS	33	{
2efa42f2 JS	34	/* we dont have voltage/card/ready detection
	35	* so we dont need interrupts for it
	36	*/
	37	switch (skt->nr) {
	38	case 0:
a9bb5a4b RK	39	skt->stat[SOC_STAT_CD].gpio = GPIO_PCD;
	40	skt->stat[SOC_STAT_CD].name = "cs0_cd";
	41	skt->stat[SOC_STAT_RDY].gpio = GPIO_PRDY;
	42	skt->stat[SOC_STAT_RDY].name = "cs0_rdy";
2efa42f2	43	break;
2efa42f2 JS	44	default:
	45	break;
	46	}
	47	/* release the reset of this card */
66024db5	48	pr_debug("%s: sock %d irq %d\n", __func__, skt->nr, skt->socket.pci_irq);
2efa42f2	49
a9bb5a4b	50	return 0;
2efa42f2 JS	51	}
	52
	53	static unsigned long trizeps_pcmcia_status[2];
	54
	55	static void trizeps_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	56	struct pcmcia_state *state)
	57	{
	58	unsigned short status = 0, change;
	59	status = CFSR_readw();
	60	change = (status ^ trizeps_pcmcia_status[skt->nr]) &
	61	ConXS_CFSR_BVD_MASK;
	62	if (change) {
	63	trizeps_pcmcia_status[skt->nr] = status;
	64	if (status & ConXS_CFSR_BVD1) {
	65	/* enable_irq empty */
	66	} else {
	67	/* disable_irq empty */
	68	}
	69	}
	70
	71	switch (skt->nr) {
	72	case 0:
	73	/* just fill in fix states */
2efa42f2 JS	74	state->bvd1 = (status & ConXS_CFSR_BVD1) ? 1 : 0;
	75	state->bvd2 = (status & ConXS_CFSR_BVD2) ? 1 : 0;
	76	state->vs_3v = (status & ConXS_CFSR_VS1) ? 0 : 1;
	77	state->vs_Xv = (status & ConXS_CFSR_VS2) ? 0 : 1;
2efa42f2 JS	78	break;
	79
	80	#ifndef CONFIG_MACH_TRIZEPS_CONXS
	81	/* on ConXS we only have one slot. Second is inactive */
	82	case 1:
	83	state->detect = 0;
	84	state->ready = 0;
	85	state->bvd1 = 0;
	86	state->bvd2 = 0;
	87	state->vs_3v = 0;
	88	state->vs_Xv = 0;
2efa42f2 JS	89	break;
	90
	91	#endif
	92	}
	93	}
	94
	95	static int trizeps_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	96	const socket_state_t *state)
	97	{
	98	int ret = 0;
	99	unsigned short power = 0;
	100
	101	/* we do nothing here just check a bit */
	102	switch (state->Vcc) {
	103	case 0: power &= 0xfc; break;
	104	case 33: power \|= ConXS_BCR_S0_VCC_3V3; break;
	105	case 50:
	106	pr_err("%s(): Vcc 5V not supported in socket\n", __func__);
	107	break;
	108	default:
	109	pr_err("%s(): bad Vcc %u\n", __func__, state->Vcc);
	110	ret = -1;
	111	}
	112
	113	switch (state->Vpp) {
	114	case 0: power &= 0xf3; break;
	115	case 33: power \|= ConXS_BCR_S0_VPP_3V3; break;
	116	case 120:
	117	pr_err("%s(): Vpp 12V not supported in socket\n", __func__);
	118	break;
	119	default:
	120	if (state->Vpp != state->Vcc) {
	121	pr_err("%s(): bad Vpp %u\n", __func__, state->Vpp);
	122	ret = -1;
	123	}
	124	}
	125
	126	switch (skt->nr) {
	127	case 0: /* we only have 3.3V */
	128	board_pcmcia_power(power);
	129	break;
	130
	131	#ifndef CONFIG_MACH_TRIZEPS_CONXS
	132	/* on ConXS we only have one slot. Second is inactive */
	133	case 1:
	134	#endif
	135	default:
	136	break;
	137	}
	138
	139	return ret;
	140	}
	141
	142	static void trizeps_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	143	{
	144	/* default is on */
	145	board_pcmcia_power(0x9);
	146	}
	147
	148	static void trizeps_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	149	{
	150	board_pcmcia_power(0x0);
	151	}
	152
153	static struct pcmcia_low_level trizeps_pcmcia_ops = {
154	.owner = THIS_MODULE,
155	.hw_init = trizeps_pcmcia_hw_init,
2efa42f2 JS	156	.socket_state = trizeps_pcmcia_socket_state,
	157	.configure_socket = trizeps_pcmcia_configure_socket,
	158	.socket_init = trizeps_pcmcia_socket_init,
	159	.socket_suspend = trizeps_pcmcia_socket_suspend,
	160	#ifdef CONFIG_MACH_TRIZEPS_CONXS
	161	.nr = 1,
	162	#else
	163	.nr = 2,
	164	#endif
	165	.first = 0,
	166	};
	167
	168	static struct platform_device *trizeps_pcmcia_device;
	169
	170	static int __init trizeps_pcmcia_init(void)
	171	{
	172	int ret;
	173
735443fe DES	174	if (!machine_is_trizeps4() && !machine_is_trizeps4wl())
	175	return -ENODEV;
	176
2efa42f2 JS	177	trizeps_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	178	if (!trizeps_pcmcia_device)
	179	return -ENOMEM;
	180
	181	ret = platform_device_add_data(trizeps_pcmcia_device,
	182	&trizeps_pcmcia_ops, sizeof(trizeps_pcmcia_ops));
	183
	184	if (ret == 0)
	185	ret = platform_device_add(trizeps_pcmcia_device);
	186
	187	if (ret)
	188	platform_device_put(trizeps_pcmcia_device);
	189
	190	return ret;
	191	}
	192
	193	static void __exit trizeps_pcmcia_exit(void)
	194	{
2efa42f2 JS	195	platform_device_unregister(trizeps_pcmcia_device);
	196	}
	197
	198	fs_initcall(trizeps_pcmcia_init);
	199	module_exit(trizeps_pcmcia_exit);
	200
	201	MODULE_LICENSE("GPL");
	202	MODULE_AUTHOR("Juergen Schindele");
	203	MODULE_ALIAS("platform:pxa2xx-pcmcia");