[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / pxa2xx_sharpsl.c

/*
 * Sharp SL-C7xx Series PCMCIA routines
 *
 * Copyright (c) 2004-2005 Richard Purdie
 *
 * Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c
 *
 * 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/errno.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>

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

#include "soc_common.h"

#define	NO_KEEP_VS 0x0001
#define SCOOP_DEV platform_scoop_config->devs

static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt)
{
	struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr];

	reset_scoop(scoopdev->dev);

	/* Shared power controls need to be handled carefully */
	if (platform_scoop_config->power_ctrl)
		platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr);
	else
		write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000);

	scoopdev->keep_vs = NO_KEEP_VS;
	scoopdev->keep_rd = 0;
}

static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
		skt->stat[SOC_STAT_CD].irq = SCOOP_DEV[skt->nr].cd_irq;
		skt->stat[SOC_STAT_CD].name = SCOOP_DEV[skt->nr].cd_irq_str;
	}

	skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;

	return 0;
}

static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
				    struct pcmcia_state *state)
{
	unsigned short cpr, csr;
	struct device *scoop = SCOOP_DEV[skt->nr].dev;

	cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);

	write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
	write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
	write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
	csr = read_scoop_reg(scoop, SCOOP_CSR);
	if (csr & 0x0004) {
		/* card eject */
		write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
		SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
	}
	else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
		/* keep vs1,vs2 */
		write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
		csr |= SCOOP_DEV[skt->nr].keep_vs;
	}
	else if (cpr & 0x0003) {
		/* power on */
		write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
		SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
	}
	else {
		/* card detect */
	        if ((machine_is_spitz() || machine_is_borzoi()) && skt->nr == 1) {
	                write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
	        } else {
		        write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
	        }
	}

	state->detect = (csr & 0x0004) ? 0 : 1;
	state->ready  = (csr & 0x0002) ? 1 : 0;
	state->bvd1   = (csr & 0x0010) ? 1 : 0;
	state->bvd2   = (csr & 0x0020) ? 1 : 0;
	state->wrprot = (csr & 0x0008) ? 1 : 0;
	state->vs_3v  = (csr & 0x0040) ? 0 : 1;
	state->vs_Xv  = (csr & 0x0080) ? 0 : 1;

	if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
		printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
	}
}


static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
				       const socket_state_t *state)
{
	unsigned long flags;
	struct device *scoop = SCOOP_DEV[skt->nr].dev;

	unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;

	switch (state->Vcc) {
	case	0:  	break;
	case 	33: 	break;
	case	50: 	break;
	default:
		 printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
		 return -1;
	}

	if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
		printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
		return -1;
	}

	local_irq_save(flags);

	nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
	ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
	nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
	nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;

	if ((machine_is_spitz() || machine_is_borzoi() || machine_is_akita()) && skt->nr == 0) {
	        ncpr |= (state->Vcc == 33) ? 0x0002 :
		        (state->Vcc == 50) ? 0x0002 : 0;
	} else {
	        ncpr |= (state->Vcc == 33) ? 0x0001 :
		        (state->Vcc == 50) ? 0x0002 : 0;
	}
	nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0;
	ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
	nccr |= (state->flags&SS_RESET)? 0x0080: 0;
	nimr |=	((skt->status&SS_DETECT) ? 0x0004 : 0)|
			((skt->status&SS_READY)  ? 0x0002 : 0)|
			((skt->status&SS_BATDEAD)? 0x0010 : 0)|
			((skt->status&SS_BATWARN)? 0x0020 : 0)|
			((skt->status&SS_STSCHG) ? 0x0010 : 0)|
			((skt->status&SS_WRPROT) ? 0x0008 : 0);

	if (!(ncpr & 0x0003)) {
		SCOOP_DEV[skt->nr].keep_rd = 0;
	} else if (!SCOOP_DEV[skt->nr].keep_rd) {
		if (nccr & 0x0080)
			SCOOP_DEV[skt->nr].keep_rd = 1;
		else
			nccr |= 0x0080;
	}

	if (mcr != nmcr)
		write_scoop_reg(scoop, SCOOP_MCR, nmcr);
	if (cpr != ncpr) {
		if (platform_scoop_config->power_ctrl)
			platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr);
		else
		        write_scoop_reg(scoop, SCOOP_CPR, ncpr);
	}
	if (ccr != nccr)
		write_scoop_reg(scoop, SCOOP_CCR, nccr);
	if (imr != nimr)
		write_scoop_reg(scoop, SCOOP_IMR, nimr);

	local_irq_restore(flags);

	return 0;
}

static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
	sharpsl_pcmcia_init_reset(skt);

	/* Enable interrupt */
	write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0);
	write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101);
	SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
}

static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	sharpsl_pcmcia_init_reset(skt);
}

static struct pcmcia_low_level sharpsl_pcmcia_ops = {
	.owner                  = THIS_MODULE,
	.hw_init                = sharpsl_pcmcia_hw_init,
	.socket_state           = sharpsl_pcmcia_socket_state,
	.configure_socket       = sharpsl_pcmcia_configure_socket,
	.socket_init            = sharpsl_pcmcia_socket_init,
	.socket_suspend         = sharpsl_pcmcia_socket_suspend,
	.first                  = 0,
	.nr                     = 0,
};

#ifdef CONFIG_SA1100_COLLIE
#include "sa11xx_base.h"

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

       if (machine_is_collie())
               ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);

       return ret;
}

#else

static struct platform_device *sharpsl_pcmcia_device;

static int __init sharpsl_pcmcia_init(void)
{
	int ret;

	if (!platform_scoop_config)
		return -ENODEV;

	sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
	sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);

	if (!sharpsl_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(sharpsl_pcmcia_device,
			&sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops));
	if (ret == 0) {
		sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
		ret = platform_device_add(sharpsl_pcmcia_device);
	}

	if (ret)
		platform_device_put(sharpsl_pcmcia_device);

	return ret;
}

static void __exit sharpsl_pcmcia_exit(void)
{
	platform_device_unregister(sharpsl_pcmcia_device);
}

fs_initcall(sharpsl_pcmcia_init);
module_exit(sharpsl_pcmcia_exit);
#endif

MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pxa2xx-pcmcia");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Sharp SL-C7xx Series PCMCIA routines
	3	*
	4	* Copyright (c) 2004-2005 Richard Purdie
	5	*
	6	* Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/init.h>
	16	#include <linux/kernel.h>
	17	#include <linux/errno.h>
	18	#include <linux/interrupt.h>
d052d1be	19	#include <linux/platform_device.h>
1da177e4	20
77bb86a1	21	#include <asm/mach-types.h>
a09e64fb	22	#include <mach/hardware.h>
1da177e4	23	#include <asm/irq.h>
1da177e4	24	#include <asm/hardware/scoop.h>
1da177e4 LT	25
	26	#include "soc_common.h"
	27
	28	#define NO_KEEP_VS 0x0001
a63ae442 RP	29	#define SCOOP_DEV platform_scoop_config->devs
a63ae442 RP	30
945b9579	31	static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt)
1da177e4	32	{
945b9579 RP	33	struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr];
945b9579 RP	34
0ce7625f	35	reset_scoop(scoopdev->dev);
945b9579 RP	36
	37	/* Shared power controls need to be handled carefully */
	38	if (platform_scoop_config->power_ctrl)
	39	platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr);
	40	else
	41	write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000);
	42
0ce7625f RP	43	scoopdev->keep_vs = NO_KEEP_VS;
0ce7625f RP	44	scoopdev->keep_rd = 0;
1da177e4 LT	45	}
	46
	47	static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	48	{
a63ae442	49	if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
a9bb5a4b RK	50	skt->stat[SOC_STAT_CD].irq = SCOOP_DEV[skt->nr].cd_irq;
a9bb5a4b RK	51	skt->stat[SOC_STAT_CD].name = SCOOP_DEV[skt->nr].cd_irq_str;
1da177e4 LT	52	}
1da177e4 LT	53
66024db5	54	skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;
1da177e4 LT	55
	56	return 0;
	57	}
	58
1da177e4 LT	59	static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	60	struct pcmcia_state *state)
	61	{
	62	unsigned short cpr, csr;
a63ae442	63	struct device *scoop = SCOOP_DEV[skt->nr].dev;
1da177e4	64
a63ae442	65	cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
1da177e4	66
0ce7625f RP	67	write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
	68	write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
	69	write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
	70	csr = read_scoop_reg(scoop, SCOOP_CSR);
1da177e4 LT	71	if (csr & 0x0004) {
1da177e4 LT	72	/* card eject */
0ce7625f	73	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
a63ae442	74	SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
1da177e4	75	}
a63ae442	76	else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
1da177e4	77	/* keep vs1,vs2 */
0ce7625f	78	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
a63ae442	79	csr \|= SCOOP_DEV[skt->nr].keep_vs;
1da177e4 LT	80	}
	81	else if (cpr & 0x0003) {
	82	/* power on */
0ce7625f	83	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
a63ae442	84	SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
1da177e4 LT	85	}
	86	else {
	87	/* card detect */
a63ae442 RP	88	if ((machine_is_spitz() \|\| machine_is_borzoi()) && skt->nr == 1) {
	89	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
	90	} else {
	91	write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
	92	}
1da177e4 LT	93	}
	94
	95	state->detect = (csr & 0x0004) ? 0 : 1;
	96	state->ready = (csr & 0x0002) ? 1 : 0;
	97	state->bvd1 = (csr & 0x0010) ? 1 : 0;
	98	state->bvd2 = (csr & 0x0020) ? 1 : 0;
	99	state->wrprot = (csr & 0x0008) ? 1 : 0;
	100	state->vs_3v = (csr & 0x0040) ? 0 : 1;
	101	state->vs_Xv = (csr & 0x0080) ? 0 : 1;
	102
	103	if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
	104	printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
	105	}
1da177e4 LT	106	}
	107
	108
	109	static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	110	const socket_state_t *state)
	111	{
	112	unsigned long flags;
a63ae442	113	struct device *scoop = SCOOP_DEV[skt->nr].dev;
1da177e4 LT	114
	115	unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;
	116
	117	switch (state->Vcc) {
	118	case 0: break;
	119	case 33: break;
	120	case 50: break;
	121	default:
	122	printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
	123	return -1;
	124	}
	125
	126	if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
	127	printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
	128	return -1;
	129	}
	130
	131	local_irq_save(flags);
	132
0ce7625f RP	133	nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
	134	ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
	135	nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
	136	nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
1da177e4	137
a63ae442 RP	138	if ((machine_is_spitz() \|\| machine_is_borzoi() \|\| machine_is_akita()) && skt->nr == 0) {
	139	ncpr \|= (state->Vcc == 33) ? 0x0002 :
	140	(state->Vcc == 50) ? 0x0002 : 0;
	141	} else {
	142	ncpr \|= (state->Vcc == 33) ? 0x0001 :
	143	(state->Vcc == 50) ? 0x0002 : 0;
	144	}
1da177e4 LT	145	nmcr \|= (state->flags&SS_IOCARD) ? 0x0010 : 0;
	146	ncpr \|= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
	147	nccr \|= (state->flags&SS_RESET)? 0x0080: 0;
	148	nimr \|= ((skt->status&SS_DETECT) ? 0x0004 : 0)\|
	149	((skt->status&SS_READY) ? 0x0002 : 0)\|
	150	((skt->status&SS_BATDEAD)? 0x0010 : 0)\|
	151	((skt->status&SS_BATWARN)? 0x0020 : 0)\|
	152	((skt->status&SS_STSCHG) ? 0x0010 : 0)\|
	153	((skt->status&SS_WRPROT) ? 0x0008 : 0);
	154
	155	if (!(ncpr & 0x0003)) {
a63ae442 RP	156	SCOOP_DEV[skt->nr].keep_rd = 0;
a63ae442 RP	157	} else if (!SCOOP_DEV[skt->nr].keep_rd) {
1da177e4	158	if (nccr & 0x0080)
a63ae442	159	SCOOP_DEV[skt->nr].keep_rd = 1;
1da177e4 LT	160	else
	161	nccr \|= 0x0080;
	162	}
	163
	164	if (mcr != nmcr)
0ce7625f	165	write_scoop_reg(scoop, SCOOP_MCR, nmcr);
a63ae442 RP	166	if (cpr != ncpr) {
	167	if (platform_scoop_config->power_ctrl)
	168	platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr);
	169	else
	170	write_scoop_reg(scoop, SCOOP_CPR, ncpr);
	171	}
1da177e4	172	if (ccr != nccr)
0ce7625f	173	write_scoop_reg(scoop, SCOOP_CCR, nccr);
1da177e4	174	if (imr != nimr)
0ce7625f	175	write_scoop_reg(scoop, SCOOP_IMR, nimr);
1da177e4 LT	176
	177	local_irq_restore(flags);
	178
	179	return 0;
	180	}
	181
	182	static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	183	{
945b9579	184	sharpsl_pcmcia_init_reset(skt);
0ce7625f RP	185
0ce7625f RP	186	/* Enable interrupt */
a63ae442 RP	187	write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0);
	188	write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101);
	189	SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
1da177e4 LT	190	}
	191
	192	static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	193	{
945b9579	194	sharpsl_pcmcia_init_reset(skt);
1da177e4 LT	195	}
1da177e4 LT	196
fdc858a4	197	static struct pcmcia_low_level sharpsl_pcmcia_ops = {
a63ae442 RP	198	.owner = THIS_MODULE,
a63ae442 RP	199	.hw_init = sharpsl_pcmcia_hw_init,
a63ae442 RP	200	.socket_state = sharpsl_pcmcia_socket_state,
	201	.configure_socket = sharpsl_pcmcia_configure_socket,
	202	.socket_init = sharpsl_pcmcia_socket_init,
	203	.socket_suspend = sharpsl_pcmcia_socket_suspend,
	204	.first = 0,
	205	.nr = 0,
1da177e4 LT	206	};
1da177e4 LT	207
77bb86a1	208	#ifdef CONFIG_SA1100_COLLIE
a63ae442 RP	209	#include "sa11xx_base.h"
a63ae442 RP	210
34cdf25a	211	int pcmcia_collie_init(struct device *dev)
77bb86a1 PM	212	{
	213	int ret = -ENODEV;
	214
	215	if (machine_is_collie())
	216	ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);
	217
	218	return ret;
	219	}
	220
	221	#else
	222
a63ae442 RP	223	static struct platform_device *sharpsl_pcmcia_device;
a63ae442 RP	224
1da177e4 LT	225	static int __init sharpsl_pcmcia_init(void)
	226	{
	227	int ret;
	228
ae1036a2 DES	229	if (!platform_scoop_config)
	230	return -ENODEV;
	231
b016450f RP	232	sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
	233	sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	234
1da177e4 LT	235	if (!sharpsl_pcmcia_device)
1da177e4 LT	236	return -ENOMEM;
0ce7625f	237
4e5e8de0 RK	238	ret = platform_device_add_data(sharpsl_pcmcia_device,
	239	&sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops));
	240	if (ret == 0) {
	241	sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
	242	ret = platform_device_add(sharpsl_pcmcia_device);
	243	}
1da177e4	244
1da177e4	245	if (ret)
b016450f	246	platform_device_put(sharpsl_pcmcia_device);
1da177e4 LT	247
	248	return ret;
	249	}
	250
	251	static void __exit sharpsl_pcmcia_exit(void)
	252	{
1da177e4 LT	253	platform_device_unregister(sharpsl_pcmcia_device);
	254	}
	255
f36598ae	256	fs_initcall(sharpsl_pcmcia_init);
1da177e4	257	module_exit(sharpsl_pcmcia_exit);
77bb86a1	258	#endif
1da177e4 LT	259
	260	MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
	261	MODULE_LICENSE("GPL");
43cc71ee	262	MODULE_ALIAS("platform:pxa2xx-pcmcia");