[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / parisc / asp.c

/*
 *	ASP Device Driver
 *
 *	(c) Copyright 2000 The Puffin Group Inc.
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *	by Helge Deller <deller@gmx.de>
 */

#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <asm/io.h>
#include <asm/led.h>

#include "gsc.h"

#define ASP_GSC_IRQ	3		/* hardcoded interrupt for GSC */

#define ASP_VER_OFFSET 	0x20		/* offset of ASP version */

#define ASP_LED_ADDR	0xf0800020

#define VIPER_INT_WORD  0xFFFBF088      /* addr of viper interrupt word */

static struct gsc_asic asp;

static void asp_choose_irq(struct parisc_device *dev, void *ctrl)
{
	int irq;

	switch (dev->id.sversion) {
	case 0x71:	irq =  9; break; /* SCSI */
	case 0x72:	irq =  8; break; /* LAN */
	case 0x73:	irq =  1; break; /* HIL */
	case 0x74:	irq =  7; break; /* Centronics */
	case 0x75:	irq = (dev->hw_path == 4) ? 5 : 6; break; /* RS232 */
	case 0x76:	irq = 10; break; /* EISA BA */
	case 0x77:	irq = 11; break; /* Graphics1 */
	case 0x7a:	irq = 13; break; /* Audio (Bushmaster) */
	case 0x7b:	irq = 13; break; /* Audio (Scorpio) */
	case 0x7c:	irq =  3; break; /* FW SCSI */
	case 0x7d:	irq =  4; break; /* FDDI */
	case 0x7f:	irq = 13; break; /* Audio (Outfield) */
	default:	return;		 /* Unknown */
	}

	gsc_asic_assign_irq(ctrl, irq, &dev->irq);

	switch (dev->id.sversion) {
	case 0x73:	irq =  2; break; /* i8042 High-priority */
	case 0x76:	irq =  0; break; /* EISA BA */
	default:	return;		 /* Other */
	}

	gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
}

/* There are two register ranges we're interested in.  Interrupt /
 * Status / LED are at 0xf080xxxx and Asp special registers are at
 * 0xf082fxxx.  PDC only tells us that Asp is at 0xf082f000, so for
 * the purposes of interrupt handling, we have to tell other bits of
 * the kernel to look at the other registers.
 */
#define ASP_INTERRUPT_ADDR 0xf0800000

int __init
asp_init_chip(struct parisc_device *dev)
{
	struct gsc_irq gsc_irq;
	int ret;

	asp.version = gsc_readb(dev->hpa.start + ASP_VER_OFFSET) & 0xf;
	asp.name = (asp.version == 1) ? "Asp" : "Cutoff";
	asp.hpa = ASP_INTERRUPT_ADDR;

	printk(KERN_INFO "%s version %d at 0x%lx found.\n", 
		asp.name, asp.version, dev->hpa.start);

	/* the IRQ ASP should use */
	ret = -EBUSY;
	dev->irq = gsc_claim_irq(&gsc_irq, ASP_GSC_IRQ);
	if (dev->irq < 0) {
		printk(KERN_ERR "%s(): cannot get GSC irq\n", __func__);
		goto out;
	}

	asp.eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;

	ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "asp", &asp);
	if (ret < 0)
		goto out;

	/* Program VIPER to interrupt on the ASP irq */
	gsc_writel((1 << (31 - ASP_GSC_IRQ)),VIPER_INT_WORD);

	/* Done init'ing, register this driver */
	ret = gsc_common_setup(dev, &asp);
	if (ret)
		goto out;

	gsc_fixup_irqs(dev, &asp, asp_choose_irq);
	/* Mongoose is a sibling of Asp, not a child... */
	gsc_fixup_irqs(parisc_parent(dev), &asp, asp_choose_irq);

	/* initialize the chassis LEDs */ 
#ifdef CONFIG_CHASSIS_LCD_LED	
	register_led_driver(DISPLAY_MODEL_OLD_ASP, LED_CMD_REG_NONE, 
		    ASP_LED_ADDR);
#endif

 out:
	return ret;
}

static struct parisc_device_id asp_tbl[] = {
	{ HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 },
	{ 0, }
};

struct parisc_driver asp_driver = {
	.name =		"asp",
	.id_table =	asp_tbl,
	.probe =	asp_init_chip,
};
Commit	Line	Data
1da177e4 LT	1	/*
	2	* ASP Device Driver
	3	*
	4	* (c) Copyright 2000 The Puffin Group Inc.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* by Helge Deller <deller@gmx.de>
	12	*/
	13
	14	#include <linux/errno.h>
	15	#include <linux/init.h>
	16	#include <linux/interrupt.h>
	17	#include <linux/module.h>
	18	#include <linux/slab.h>
	19	#include <linux/types.h>
	20	#include <asm/io.h>
	21	#include <asm/led.h>
	22
	23	#include "gsc.h"
	24
	25	#define ASP_GSC_IRQ 3 /* hardcoded interrupt for GSC */
	26
	27	#define ASP_VER_OFFSET 0x20 /* offset of ASP version */
	28
	29	#define ASP_LED_ADDR 0xf0800020
	30
	31	#define VIPER_INT_WORD 0xFFFBF088 /* addr of viper interrupt word */
	32
	33	static struct gsc_asic asp;
	34
	35	static void asp_choose_irq(struct parisc_device dev, void ctrl)
	36	{
	37	int irq;
	38
	39	switch (dev->id.sversion) {
	40	case 0x71: irq = 9; break; /* SCSI */
	41	case 0x72: irq = 8; break; /* LAN */
	42	case 0x73: irq = 1; break; /* HIL */
	43	case 0x74: irq = 7; break; /* Centronics */
	44	case 0x75: irq = (dev->hw_path == 4) ? 5 : 6; break; /* RS232 */
	45	case 0x76: irq = 10; break; /* EISA BA */
	46	case 0x77: irq = 11; break; /* Graphics1 */
	47	case 0x7a: irq = 13; break; /* Audio (Bushmaster) */
	48	case 0x7b: irq = 13; break; /* Audio (Scorpio) */
	49	case 0x7c: irq = 3; break; /* FW SCSI */
	50	case 0x7d: irq = 4; break; /* FDDI */
	51	case 0x7f: irq = 13; break; /* Audio (Outfield) */
	52	default: return; /* Unknown */
	53	}
	54
	55	gsc_asic_assign_irq(ctrl, irq, &dev->irq);
	56
	57	switch (dev->id.sversion) {
	58	case 0x73: irq = 2; break; /* i8042 High-priority */
	59	case 0x76: irq = 0; break; /* EISA BA */
	60	default: return; /* Other */
	61	}
	62
	63	gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
	64	}
65
66	/* There are two register ranges we're interested in. Interrupt /
67	* Status / LED are at 0xf080xxxx and Asp special registers are at
68	* 0xf082fxxx. PDC only tells us that Asp is at 0xf082f000, so for
69	* the purposes of interrupt handling, we have to tell other bits of
70	* the kernel to look at the other registers.
71	*/
72	#define ASP_INTERRUPT_ADDR 0xf0800000
73
74	int __init
75	asp_init_chip(struct parisc_device *dev)
76	{
77	struct gsc_irq gsc_irq;
78	int ret;
79
53f01bba	80	asp.version = gsc_readb(dev->hpa.start + ASP_VER_OFFSET) & 0xf;
1da177e4 LT	81	asp.name = (asp.version == 1) ? "Asp" : "Cutoff";
	82	asp.hpa = ASP_INTERRUPT_ADDR;
	83
	84	printk(KERN_INFO "%s version %d at 0x%lx found.\n",
53f01bba	85	asp.name, asp.version, dev->hpa.start);
1da177e4 LT	86
	87	/* the IRQ ASP should use */
	88	ret = -EBUSY;
	89	dev->irq = gsc_claim_irq(&gsc_irq, ASP_GSC_IRQ);
	90	if (dev->irq < 0) {
a8043ecb	91	printk(KERN_ERR "%s(): cannot get GSC irq\n", __func__);
1da177e4 LT	92	goto out;
	93	}
	94
	95	asp.eim = ((u32) gsc_irq.txn_addr) \| gsc_irq.txn_data;
	96
	97	ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "asp", &asp);
	98	if (ret < 0)
	99	goto out;
	100
	101	/* Program VIPER to interrupt on the ASP irq */
	102	gsc_writel((1 << (31 - ASP_GSC_IRQ)),VIPER_INT_WORD);
	103
	104	/* Done init'ing, register this driver */
	105	ret = gsc_common_setup(dev, &asp);
	106	if (ret)
	107	goto out;
	108
	109	gsc_fixup_irqs(dev, &asp, asp_choose_irq);
	110	/* Mongoose is a sibling of Asp, not a child... */
	111	gsc_fixup_irqs(parisc_parent(dev), &asp, asp_choose_irq);
	112
	113	/* initialize the chassis LEDs */
	114	#ifdef CONFIG_CHASSIS_LCD_LED
	115	register_led_driver(DISPLAY_MODEL_OLD_ASP, LED_CMD_REG_NONE,
	116	ASP_LED_ADDR);
	117	#endif
	118
	119	out:
	120	return ret;
	121	}
	122
	123	static struct parisc_device_id asp_tbl[] = {
	124	{ HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 },
	125	{ 0, }
	126	};
	127
	128	struct parisc_driver asp_driver = {
bdad1f83	129	.name = "asp",
1da177e4 LT	130	.id_table = asp_tbl,
	131	.probe = asp_init_chip,
	132	};