[linux-2.6-block.git] / drivers / pcmcia / pxa2xx_sharpsl.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Sharp SL-C7xx Series PCMCIA routines
 *
 * Copyright (c) 2004-2005 Richard Purdie
 *
 * Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c
 */

#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
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
1da177e4 LT	2	/*
	3	* Sharp SL-C7xx Series PCMCIA routines
	4	*
	5	* Copyright (c) 2004-2005 Richard Purdie
	6	*
	7	* Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c
1da177e4 LT	8	*/
	9
	10	#include <linux/module.h>
	11	#include <linux/init.h>
	12	#include <linux/kernel.h>
	13	#include <linux/errno.h>
	14	#include <linux/interrupt.h>
d052d1be	15	#include <linux/platform_device.h>
1da177e4	16
77bb86a1	17	#include <asm/mach-types.h>
a09e64fb	18	#include <mach/hardware.h>
1da177e4	19	#include <asm/irq.h>
1da177e4	20	#include <asm/hardware/scoop.h>
1da177e4 LT	21
	22	#include "soc_common.h"
	23
	24	#define NO_KEEP_VS 0x0001
a63ae442 RP	25	#define SCOOP_DEV platform_scoop_config->devs
a63ae442 RP	26
945b9579	27	static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt)
1da177e4	28	{
945b9579 RP	29	struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr];
945b9579 RP	30
0ce7625f	31	reset_scoop(scoopdev->dev);
945b9579 RP	32
	33	/* Shared power controls need to be handled carefully */
	34	if (platform_scoop_config->power_ctrl)
	35	platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr);
	36	else
	37	write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000);
	38
0ce7625f RP	39	scoopdev->keep_vs = NO_KEEP_VS;
0ce7625f RP	40	scoopdev->keep_rd = 0;
1da177e4 LT	41	}
	42
	43	static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	44	{
a63ae442	45	if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
a9bb5a4b RK	46	skt->stat[SOC_STAT_CD].irq = SCOOP_DEV[skt->nr].cd_irq;
a9bb5a4b RK	47	skt->stat[SOC_STAT_CD].name = SCOOP_DEV[skt->nr].cd_irq_str;
1da177e4 LT	48	}
1da177e4 LT	49
66024db5	50	skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;
1da177e4 LT	51
	52	return 0;
	53	}
	54
1da177e4 LT	55	static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	56	struct pcmcia_state *state)
	57	{
	58	unsigned short cpr, csr;
a63ae442	59	struct device *scoop = SCOOP_DEV[skt->nr].dev;
1da177e4	60
a63ae442	61	cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
1da177e4	62
0ce7625f RP	63	write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
	64	write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
	65	write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
	66	csr = read_scoop_reg(scoop, SCOOP_CSR);
1da177e4 LT	67	if (csr & 0x0004) {
1da177e4 LT	68	/* card eject */
0ce7625f	69	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
a63ae442	70	SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
1da177e4	71	}
a63ae442	72	else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
1da177e4	73	/* keep vs1,vs2 */
0ce7625f	74	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
a63ae442	75	csr \|= SCOOP_DEV[skt->nr].keep_vs;
1da177e4 LT	76	}
	77	else if (cpr & 0x0003) {
	78	/* power on */
0ce7625f	79	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
a63ae442	80	SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
1da177e4 LT	81	}
	82	else {
	83	/* card detect */
a63ae442 RP	84	if ((machine_is_spitz() \|\| machine_is_borzoi()) && skt->nr == 1) {
	85	write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
	86	} else {
	87	write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
	88	}
1da177e4 LT	89	}
	90
	91	state->detect = (csr & 0x0004) ? 0 : 1;
	92	state->ready = (csr & 0x0002) ? 1 : 0;
	93	state->bvd1 = (csr & 0x0010) ? 1 : 0;
	94	state->bvd2 = (csr & 0x0020) ? 1 : 0;
	95	state->wrprot = (csr & 0x0008) ? 1 : 0;
	96	state->vs_3v = (csr & 0x0040) ? 0 : 1;
	97	state->vs_Xv = (csr & 0x0080) ? 0 : 1;
	98
	99	if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
	100	printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
	101	}
1da177e4 LT	102	}
	103
	104
	105	static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	106	const socket_state_t *state)
	107	{
	108	unsigned long flags;
a63ae442	109	struct device *scoop = SCOOP_DEV[skt->nr].dev;
1da177e4 LT	110
	111	unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;
	112
	113	switch (state->Vcc) {
	114	case 0: break;
	115	case 33: break;
	116	case 50: break;
	117	default:
	118	printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
	119	return -1;
	120	}
	121
	122	if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
	123	printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
	124	return -1;
	125	}
	126
	127	local_irq_save(flags);
	128
0ce7625f RP	129	nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
	130	ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
	131	nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
	132	nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
1da177e4	133
a63ae442 RP	134	if ((machine_is_spitz() \|\| machine_is_borzoi() \|\| machine_is_akita()) && skt->nr == 0) {
	135	ncpr \|= (state->Vcc == 33) ? 0x0002 :
	136	(state->Vcc == 50) ? 0x0002 : 0;
	137	} else {
	138	ncpr \|= (state->Vcc == 33) ? 0x0001 :
	139	(state->Vcc == 50) ? 0x0002 : 0;
	140	}
1da177e4 LT	141	nmcr \|= (state->flags&SS_IOCARD) ? 0x0010 : 0;
	142	ncpr \|= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
	143	nccr \|= (state->flags&SS_RESET)? 0x0080: 0;
	144	nimr \|= ((skt->status&SS_DETECT) ? 0x0004 : 0)\|
	145	((skt->status&SS_READY) ? 0x0002 : 0)\|
	146	((skt->status&SS_BATDEAD)? 0x0010 : 0)\|
	147	((skt->status&SS_BATWARN)? 0x0020 : 0)\|
	148	((skt->status&SS_STSCHG) ? 0x0010 : 0)\|
	149	((skt->status&SS_WRPROT) ? 0x0008 : 0);
	150
	151	if (!(ncpr & 0x0003)) {
a63ae442 RP	152	SCOOP_DEV[skt->nr].keep_rd = 0;
a63ae442 RP	153	} else if (!SCOOP_DEV[skt->nr].keep_rd) {
1da177e4	154	if (nccr & 0x0080)
a63ae442	155	SCOOP_DEV[skt->nr].keep_rd = 1;
1da177e4 LT	156	else
	157	nccr \|= 0x0080;
	158	}
	159
	160	if (mcr != nmcr)
0ce7625f	161	write_scoop_reg(scoop, SCOOP_MCR, nmcr);
a63ae442 RP	162	if (cpr != ncpr) {
	163	if (platform_scoop_config->power_ctrl)
	164	platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr);
	165	else
	166	write_scoop_reg(scoop, SCOOP_CPR, ncpr);
	167	}
1da177e4	168	if (ccr != nccr)
0ce7625f	169	write_scoop_reg(scoop, SCOOP_CCR, nccr);
1da177e4	170	if (imr != nimr)
0ce7625f	171	write_scoop_reg(scoop, SCOOP_IMR, nimr);
1da177e4 LT	172
	173	local_irq_restore(flags);
	174
	175	return 0;
	176	}
	177
	178	static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	179	{
945b9579	180	sharpsl_pcmcia_init_reset(skt);
0ce7625f RP	181
0ce7625f RP	182	/* Enable interrupt */
a63ae442 RP	183	write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0);
	184	write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101);
	185	SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
1da177e4 LT	186	}
	187
	188	static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	189	{
945b9579	190	sharpsl_pcmcia_init_reset(skt);
1da177e4 LT	191	}
1da177e4 LT	192
fdc858a4	193	static struct pcmcia_low_level sharpsl_pcmcia_ops = {
a63ae442 RP	194	.owner = THIS_MODULE,
a63ae442 RP	195	.hw_init = sharpsl_pcmcia_hw_init,
a63ae442 RP	196	.socket_state = sharpsl_pcmcia_socket_state,
	197	.configure_socket = sharpsl_pcmcia_configure_socket,
	198	.socket_init = sharpsl_pcmcia_socket_init,
	199	.socket_suspend = sharpsl_pcmcia_socket_suspend,
	200	.first = 0,
	201	.nr = 0,
1da177e4 LT	202	};
1da177e4 LT	203
77bb86a1	204	#ifdef CONFIG_SA1100_COLLIE
a63ae442 RP	205	#include "sa11xx_base.h"
a63ae442 RP	206
34cdf25a	207	int pcmcia_collie_init(struct device *dev)
77bb86a1 PM	208	{
	209	int ret = -ENODEV;
	210
	211	if (machine_is_collie())
	212	ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);
	213
	214	return ret;
	215	}
	216
	217	#else
	218
a63ae442 RP	219	static struct platform_device *sharpsl_pcmcia_device;
a63ae442 RP	220
1da177e4 LT	221	static int __init sharpsl_pcmcia_init(void)
	222	{
	223	int ret;
	224
ae1036a2 DB	225	if (!platform_scoop_config)
	226	return -ENODEV;
	227
b016450f RP	228	sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
	229	sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	230
1da177e4 LT	231	if (!sharpsl_pcmcia_device)
1da177e4 LT	232	return -ENOMEM;
0ce7625f	233
4e5e8de0 RK	234	ret = platform_device_add_data(sharpsl_pcmcia_device,
	235	&sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops));
	236	if (ret == 0) {
	237	sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
	238	ret = platform_device_add(sharpsl_pcmcia_device);
	239	}
1da177e4	240
1da177e4	241	if (ret)
b016450f	242	platform_device_put(sharpsl_pcmcia_device);
1da177e4 LT	243
	244	return ret;
	245	}
	246
	247	static void __exit sharpsl_pcmcia_exit(void)
	248	{
1da177e4 LT	249	platform_device_unregister(sharpsl_pcmcia_device);
	250	}
	251
f36598ae	252	fs_initcall(sharpsl_pcmcia_init);
1da177e4	253	module_exit(sharpsl_pcmcia_exit);
77bb86a1	254	#endif
1da177e4 LT	255
	256	MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
	257	MODULE_LICENSE("GPL");
43cc71ee	258	MODULE_ALIAS("platform:pxa2xx-pcmcia");