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/*
* Driver for the media bay on the PowerBook 3400 and 2400.
*
* Copyright (C) 1998 Paul Mackerras.
*
* Various evolutions by Benjamin Herrenschmidt & Henry Worth
*
* 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.
*/
#define __KERNEL_SYSCALLS__
#include <linux/config.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/hdreg.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <asm/prom.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
#include <asm/mediabay.h>
#include <asm/sections.h>
#include <asm/ohare.h>
#include <asm/heathrow.h>
#include <asm/keylargo.h>
#include <linux/adb.h>
#include <linux/pmu.h>
#ifdef CONFIG_PMAC_PBOOK
static int mb_notify_sleep(struct pmu_sleep_notifier *self, int when);
static struct pmu_sleep_notifier mb_sleep_notifier = {
mb_notify_sleep,
SLEEP_LEVEL_MEDIABAY,
};
#endif
#undef MB_USE_INTERRUPTS
#define MB_DEBUG
#define MB_IGNORE_SIGNALS
#ifdef MB_DEBUG
#define MBDBG(fmt, arg...) printk(KERN_INFO fmt , ## arg)
#else
#define MBDBG(fmt, arg...) do { } while (0)
#endif
/* Type of media bay */
enum {
mb_ohare,
mb_heathrow,
mb_keylargo
};
#define MB_FCR32(bay, r) ((bay)->base + ((r) >> 2))
#define MB_FCR8(bay, r) (((volatile u8*)((bay)->base)) + (r))
#define MB_IN32(bay,r) (in_le32(MB_FCR32(bay,r)))
#define MB_OUT32(bay,r,v) (out_le32(MB_FCR32(bay,r), (v)))
#define MB_BIS(bay,r,v) (MB_OUT32((bay), (r), MB_IN32((bay), r) | (v)))
#define MB_BIC(bay,r,v) (MB_OUT32((bay), (r), MB_IN32((bay), r) & ~(v)))
#define MB_IN8(bay,r) (in_8(MB_FCR8(bay,r)))
#define MB_OUT8(bay,r,v) (out_8(MB_FCR8(bay,r), (v)))
struct media_bay_info;
struct mb_ops {
char* name;
u8 (*content)(struct media_bay_info* bay);
void (*power)(struct media_bay_info* bay, int on_off);
int (*setup_bus)(struct media_bay_info* bay, u8 device_id);
void (*un_reset)(struct media_bay_info* bay);
void (*un_reset_ide)(struct media_bay_info* bay);
};
struct media_bay_info {
volatile u32* base;
int content_id;
int state;
int last_value;
int value_count;
int timer;
struct device_node* dev_node;
int mb_type;
struct mb_ops* ops;
int index;
int cached_gpio;
#ifdef CONFIG_BLK_DEV_IDE
unsigned long cd_base;
int cd_index;
int cd_irq;
int cd_retry;
#endif
};
#define MAX_BAYS 2
static struct media_bay_info media_bays[MAX_BAYS];
int media_bay_count = 0;
#ifdef CONFIG_BLK_DEV_IDE
/* check the busy bit in the media-bay ide interface
(assumes the media-bay contains an ide device) */
#define MB_IDE_READY(i) ((inb(media_bays[i].cd_base + 0x70) & 0x80) == 0)
#endif
/* Note: All delays are not in milliseconds and converted to HZ relative
* values by the macro below
*/
#define MS_TO_HZ(ms) ((ms * HZ) / 1000)
/*
* Consider the media-bay ID value stable if it is the same for
* this number of milliseconds
*/
#define MB_STABLE_DELAY 100
/* Wait after powering up the media bay this delay in ms
* timeout bumped for some powerbooks
*/
#define MB_POWER_DELAY 200
/*
* Hold the media-bay reset signal true for this many ticks
* after a device is inserted before releasing it.
*/
#define MB_RESET_DELAY 40
/*
* Wait this long after the reset signal is released and before doing
* further operations. After this delay, the IDE reset signal is released
* too for an IDE device
*/
#define MB_SETUP_DELAY 100
/*
* Wait this many ticks after an IDE device (e.g. CD-ROM) is inserted
* (or until the device is ready) before waiting for busy bit to disappear
*/
#define MB_IDE_WAIT 1000
/*
* Timeout waiting for busy bit of an IDE device to go down
*/
#define MB_IDE_TIMEOUT 5000
/*
* Max retries of the full power up/down sequence for an IDE device
*/
#define MAX_CD_RETRIES 3
/*
* States of a media bay
*/
enum {
mb_empty = 0, /* Idle */
mb_powering_up, /* power bit set, waiting MB_POWER_DELAY */
mb_enabling_bay, /* enable bits set, waiting MB_RESET_DELAY */
mb_resetting, /* reset bit unset, waiting MB_SETUP_DELAY */
mb_ide_resetting, /* IDE reset bit unser, waiting MB_IDE_WAIT */
mb_ide_waiting, /* Waiting for BUSY bit to go away until MB_IDE_TIMEOUT */
mb_up, /* Media bay full */
mb_powering_down /* Powering down (avoid too fast down/up) */
};
#define MB_POWER_SOUND 0x08
#define MB_POWER_FLOPPY 0x04
#define MB_POWER_ATA 0x02
#define MB_POWER_PCI 0x01
#define MB_POWER_OFF 0x00
/*
* Functions for polling content of media bay
*/
static u8 __pmac
ohare_mb_content(struct media_bay_info *bay)
{
return (MB_IN32(bay, OHARE_MBCR) >> 12) & 7;
}
static u8 __pmac
heathrow_mb_content(struct media_bay_info *bay)
{
return (MB_IN32(bay, HEATHROW_MBCR) >> 12) & 7;
}
static u8 __pmac
keylargo_mb_content(struct media_bay_info *bay)
{
int new_gpio;
new_gpio = MB_IN8(bay, KL_GPIO_MEDIABAY_IRQ) & KEYLARGO_GPIO_INPUT_DATA;
if (new_gpio) {
bay->cached_gpio = new_gpio;
return MB_NO;
} else if (bay->cached_gpio != new_gpio) {
MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_ENABLE);
(void)MB_IN32(bay, KEYLARGO_MBCR);
udelay(5);
MB_BIC(bay, KEYLARGO_MBCR, 0x0000000F);
(void)MB_IN32(bay, KEYLARGO_MBCR);
udelay(5);
bay->cached_gpio = new_gpio;
}
return (MB_IN32(bay, KEYLARGO_MBCR) >> 4) & 7;
}
/*
* Functions for powering up/down the bay, puts the bay device
* into reset state as well
*/
static void __pmac
ohare_mb_power(struct media_bay_info* bay, int on_off)
{
if (on_off) {
/* Power up device, assert it's reset line */
MB_BIC(bay, OHARE_FCR, OH_BAY_RESET_N);
MB_BIC(bay, OHARE_FCR, OH_BAY_POWER_N);
} else {
/* Disable all devices */
MB_BIC(bay, OHARE_FCR, OH_BAY_DEV_MASK);
MB_BIC(bay, OHARE_FCR, OH_FLOPPY_ENABLE);
/* Cut power from bay, release reset line */
MB_BIS(bay, OHARE_FCR, OH_BAY_POWER_N);
MB_BIS(bay, OHARE_FCR, OH_BAY_RESET_N);
MB_BIS(bay, OHARE_FCR, OH_IDE1_RESET_N);
}
MB_BIC(bay, OHARE_MBCR, 0x00000F00);
}
static void __pmac
heathrow_mb_power(struct media_bay_info* bay, int on_off)
{
if (on_off) {
/* Power up device, assert it's reset line */
MB_BIC(bay, HEATHROW_FCR, HRW_BAY_RESET_N);
MB_BIC(bay, HEATHROW_FCR, HRW_BAY_POWER_N);
} else {
/* Disable all devices */
MB_BIC(bay, HEATHROW_FCR, HRW_BAY_DEV_MASK);
MB_BIC(bay, HEATHROW_FCR, HRW_SWIM_ENABLE);
/* Cut power from bay, release reset line */
MB_BIS(bay, HEATHROW_FCR, HRW_BAY_POWER_N);
MB_BIS(bay, HEATHROW_FCR, HRW_BAY_RESET_N);
MB_BIS(bay, HEATHROW_FCR, HRW_IDE1_RESET_N);
}
MB_BIC(bay, HEATHROW_MBCR, 0x00000F00);
}
static void __pmac
keylargo_mb_power(struct media_bay_info* bay, int on_off)
{
if (on_off) {
/* Power up device, assert it's reset line */
MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET);
MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_POWER);
} else {
/* Disable all devices */
MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_MASK);
MB_BIC(bay, KEYLARGO_FCR1, KL1_EIDE0_ENABLE);
/* Cut power from bay, release reset line */
MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_POWER);
MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET);
MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N);
}
MB_BIC(bay, KEYLARGO_MBCR, 0x0000000F);
}
/*
* Functions for configuring the media bay for a given type of device,
* enable the related busses
*/
static int __pmac
ohare_mb_setup_bus(struct media_bay_info* bay, u8 device_id)
{
switch(device_id) {
case MB_FD:
case MB_FD1:
MB_BIS(bay, OHARE_FCR, OH_BAY_FLOPPY_ENABLE);
MB_BIS(bay, OHARE_FCR, OH_FLOPPY_ENABLE);
return 0;
case MB_CD:
MB_BIC(bay, OHARE_FCR, OH_IDE1_RESET_N);
MB_BIS(bay, OHARE_FCR, OH_BAY_IDE_ENABLE);
return 0;
case MB_PCI:
MB_BIS(bay, OHARE_FCR, OH_BAY_PCI_ENABLE);
return 0;
}
return -ENODEV;
}
static int __pmac
heathrow_mb_setup_bus(struct media_bay_info* bay, u8 device_id)
{
switch(device_id) {
case MB_FD:
case MB_FD1:
MB_BIS(bay, HEATHROW_FCR, HRW_BAY_FLOPPY_ENABLE);
MB_BIS(bay, HEATHROW_FCR, HRW_SWIM_ENABLE);
return 0;
case MB_CD:
MB_BIC(bay, HEATHROW_FCR, HRW_IDE1_RESET_N);
MB_BIS(bay, HEATHROW_FCR, HRW_BAY_IDE_ENABLE);
return 0;
case MB_PCI:
MB_BIS(bay, HEATHROW_FCR, HRW_BAY_PCI_ENABLE);
return 0;
}
return -ENODEV;
}
static int __pmac
keylargo_mb_setup_bus(struct media_bay_info* bay, u8 device_id)
{
switch(device_id) {
case MB_CD:
MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_IDE_ENABLE);
MB_BIC(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N);
MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_ENABLE);
return 0;
case MB_PCI:
MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_PCI_ENABLE);
return 0;
case MB_SOUND:
MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_SOUND_ENABLE);
return 0;
}
return -ENODEV;
}
/*
* Functions for tweaking resets
*/
static void __pmac
ohare_mb_un_reset(struct media_bay_info* bay)
{
MB_BIS(bay, OHARE_FCR, OH_BAY_RESET_N);
}
static void __pmac
heathrow_mb_un_reset(struct media_bay_info* bay)
{
MB_BIS(bay, HEATHROW_FCR, HRW_BAY_RESET_N);
}
static void __pmac
keylargo_mb_un_reset(struct media_bay_info* bay)
{
MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET);
}
static void __pmac
ohare_mb_un_reset_ide(struct media_bay_info* bay)
{
MB_BIS(bay, OHARE_FCR, OH_IDE1_RESET_N);
}
static void __pmac
heathrow_mb_un_reset_ide(struct media_bay_info* bay)
{
MB_BIS(bay, HEATHROW_FCR, HRW_IDE1_RESET_N);
}
static void __pmac
keylargo_mb_un_reset_ide(struct media_bay_info* bay)
{
MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N);
}
static inline void __pmac
set_mb_power(struct media_bay_info* bay, int onoff)
{
/* Power up up and assert the bay reset line */
if (onoff) {
bay->ops->power(bay, 1);
bay->state = mb_powering_up;
MBDBG("mediabay%d: powering up\n", bay->index);
} else {
/* Make sure everything is powered down & disabled */
bay->ops->power(bay, 0);
bay->state = mb_powering_down;
MBDBG("mediabay%d: powering down\n", bay->index);
}
bay->timer = MS_TO_HZ(MB_POWER_DELAY);
}
static void __pmac
poll_media_bay(struct media_bay_info* bay)
{
int id = bay->ops->content(bay);
if (id == bay->last_value) {
if (id != bay->content_id
&& ++bay->value_count >= MS_TO_HZ(MB_STABLE_DELAY)) {
/* If the device type changes without going thru "MB_NO", we force
a pass by "MB_NO" to make sure things are properly reset */
if ((id != MB_NO) && (bay->content_id != MB_NO)) {
id = MB_NO;
MBDBG("mediabay%d: forcing MB_NO\n", bay->index);
}
MBDBG("mediabay%d: switching to %d\n", bay->index, id);
set_mb_power(bay, id != MB_NO);
bay->content_id = id;
if (id == MB_NO) {
#ifdef CONFIG_BLK_DEV_IDE
bay->cd_retry = 0;
#endif
printk(KERN_INFO "media bay %d is empty\n", bay->index);
}
}
} else {
bay->last_value = id;
bay->value_count = 0;
}
}
int __pmac
check_media_bay(struct device_node *which_bay, int what)
{
#ifdef CONFIG_BLK_DEV_IDE
int i;
for (i=0; i<media_bay_count; i++)
if (which_bay == media_bays[i].dev_node)
{
if ((what == media_bays[i].content_id) && media_bays[i].state == mb_up)
return 0;
media_bays[i].cd_index = -1;
return -EINVAL;
}
#endif /* CONFIG_BLK_DEV_IDE */
return -ENODEV;
}
int __pmac
check_media_bay_by_base(unsigned long base, int what)
{
#ifdef CONFIG_BLK_DEV_IDE
int i;
for (i=0; i<media_bay_count; i++)
if (base == media_bays[i].cd_base)
{
if ((what == media_bays[i].content_id) && media_bays[i].state == mb_up)
return 0;
media_bays[i].cd_index = -1;
return -EINVAL;
}
#endif
return -ENODEV;
}
int __pmac
media_bay_set_ide_infos(struct device_node* which_bay, unsigned long base,
int irq, int index)
{
#ifdef CONFIG_BLK_DEV_IDE
int i;
for (i=0; i<media_bay_count; i++)
if (which_bay == media_bays[i].dev_node)
{
int timeout = 5000;
media_bays[i].cd_base = base;
media_bays[i].cd_irq = irq;
if ((MB_CD != media_bays[i].content_id) || media_bays[i].state != mb_up)
return 0;
printk(KERN_DEBUG "Registered ide %d for media bay %d\n", index, i);
do {
if (MB_IDE_READY(i)) {
media_bays[i].cd_index = index;
return 0;
}
mdelay(1);
} while(--timeout);
printk(KERN_DEBUG "Timeount waiting IDE in bay %d\n", i);
return -ENODEV;
}
#endif
return -ENODEV;
}
static void __pmac
media_bay_step(int i)
{
struct media_bay_info* bay = &media_bays[i];
/* We don't poll when powering down */
if (bay->state != mb_powering_down)
poll_media_bay(bay);
/* If timer expired or polling IDE busy, run state machine */
if ((bay->state != mb_ide_waiting) && (bay->timer != 0) && ((--bay->timer) != 0))
return;
switch(bay->state) {
case mb_powering_up:
if (bay->ops->setup_bus(bay, bay->last_value) < 0) {
MBDBG("mediabay%d: device not supported (kind:%d)\n", i, bay->content_id);
set_mb_power(bay, 0);
break;
}
bay->timer = MS_TO_HZ(MB_RESET_DELAY);
bay->state = mb_enabling_bay;
MBDBG("mediabay%d: enabling (kind:%d)\n", i, bay->content_id);
break;
case mb_enabling_bay:
bay->ops->un_reset(bay);
bay->timer = MS_TO_HZ(MB_SETUP_DELAY);
bay->state = mb_resetting;
MBDBG("mediabay%d: waiting reset (kind:%d)\n", i, bay->content_id);
break;
case mb_resetting:
if (bay->content_id != MB_CD) {
MBDBG("mediabay%d: bay is up (kind:%d)\n", i, bay->content_id);
bay->state = mb_up;
break;
}
#ifdef CONFIG_BLK_DEV_IDE
MBDBG("mediabay%d: waiting IDE reset (kind:%d)\n", i, bay->content_id);
bay->ops->un_reset_ide(bay);
bay->timer = MS_TO_HZ(MB_IDE_WAIT);
bay->state = mb_ide_resetting;
#else
printk(KERN_DEBUG "media-bay %d is ide (not compiled in kernel)\n", i);
set_mb_power(bay, 0);
#endif /* CONFIG_BLK_DEV_IDE */
break;
#ifdef CONFIG_BLK_DEV_IDE
case mb_ide_resetting:
bay->timer = MS_TO_HZ(MB_IDE_TIMEOUT);
bay->state = mb_ide_waiting;
MBDBG("mediabay%d: waiting IDE ready (kind:%d)\n", i, bay->content_id);
break;
case mb_ide_waiting:
if (bay->cd_base == 0) {
bay->timer = 0;
bay->state = mb_up;
MBDBG("mediabay%d: up before IDE init\n", i);
break;
} else if (MB_IDE_READY(i)) {
bay->timer = 0;
bay->state = mb_up;
if (bay->cd_index < 0) {
pmu_suspend();
bay->cd_index = ide_register(bay->cd_base, 0, bay->cd_irq);
pmu_resume();
}
if (bay->cd_index == -1) {
/* We eventually do a retry */
bay->cd_retry++;
printk("IDE register error\n");
set_mb_power(bay, 0);
} else {
printk(KERN_DEBUG "media-bay %d is ide %d\n", i, bay->cd_index);
MBDBG("mediabay %d IDE ready\n", i);
}
break;
}
if (bay->timer == 0) {
printk("\nIDE Timeout in bay %d !\n", i);
MBDBG("mediabay%d: nIDE Timeout !\n", i);
set_mb_power(bay, 0);
}
break;
#endif /* CONFIG_BLK_DEV_IDE */
case mb_powering_down:
bay->state = mb_empty;
#ifdef CONFIG_BLK_DEV_IDE
if (bay->cd_index >= 0) {
printk(KERN_DEBUG "Unregistering mb %d ide, index:%d\n", i,
bay->cd_index);
ide_unregister(bay->cd_index);
bay->cd_index = -1;
}
if (bay->cd_retry) {
if (bay->cd_retry > MAX_CD_RETRIES) {
/* Should add an error sound (sort of beep in dmasound) */
printk("\nmedia-bay %d, IDE device badly inserted or unrecognised\n", i);
} else {
/* Force a new power down/up sequence */
bay->content_id = MB_NO;
}
}
#endif /* CONFIG_BLK_DEV_IDE */
MBDBG("mediabay%d: end of power down\n", i);
break;
}
}
/*
* This procedure runs as a kernel thread to poll the media bay
* once each tick and register and unregister the IDE interface
* with the IDE driver. It needs to be a thread because
* ide_register can't be called from interrupt context.
*/
static int __pmac
media_bay_task(void *x)
{
int i;
strcpy(current->comm, "media-bay");
#ifdef MB_IGNORE_SIGNALS
sigfillset(¤t->blocked);
#endif
for (;;) {
for (i = 0; i < media_bay_count; ++i)
media_bay_step(i);
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(1);
if (signal_pending(current))
return 0;
}
}
#ifdef MB_USE_INTERRUPTS
static void __pmac
media_bay_intr(int irq, void *devid, struct pt_regs *regs)
{
}
#endif
#ifdef CONFIG_PMAC_PBOOK
/*
* notify clients before sleep and reset bus afterwards
*/
int __pmac
mb_notify_sleep(struct pmu_sleep_notifier *self, int when)
{
struct media_bay_info* bay;
int i;
switch (when) {
case PBOOK_SLEEP_REQUEST:
case PBOOK_SLEEP_REJECT:
break;
case PBOOK_SLEEP_NOW:
for (i=0; i<media_bay_count; i++) {
bay = &media_bays[i];
set_mb_power(bay, 0);
mdelay(10);
}
break;
case PBOOK_WAKE:
for (i=0; i<media_bay_count; i++) {
bay = &media_bays[i];
/* We re-enable the bay using it's previous content
only if it did not change. Note those bozo timings,
they seem to help the 3400 get it right.
*/
/* Force MB power to 0 */
set_mb_power(bay, 0);
mdelay(MB_POWER_DELAY);
if (bay->ops->content(bay) != bay->content_id)
continue;
set_mb_power(bay, 1);
bay->last_value = bay->content_id;
bay->value_count = MS_TO_HZ(MB_STABLE_DELAY);
bay->timer = MS_TO_HZ(MB_POWER_DELAY);
#ifdef CONFIG_BLK_DEV_IDE
bay->cd_retry = 0;
#endif
do {
mdelay(1000/HZ);
media_bay_step(i);
} while((media_bays[i].state != mb_empty) &&
(media_bays[i].state != mb_up));
}
break;
}
return PBOOK_SLEEP_OK;
}
#endif /* CONFIG_PMAC_PBOOK */
/* Definitions of "ops" structures.
*/
static struct mb_ops ohare_mb_ops __pmacdata = {
name: "Ohare",
content: ohare_mb_content,
power: ohare_mb_power,
setup_bus: ohare_mb_setup_bus,
un_reset: ohare_mb_un_reset,
un_reset_ide: ohare_mb_un_reset_ide,
};
static struct mb_ops heathrow_mb_ops __pmacdata = {
name: "Heathrow",
content: heathrow_mb_content,
power: heathrow_mb_power,
setup_bus: heathrow_mb_setup_bus,
un_reset: heathrow_mb_un_reset,
un_reset_ide: heathrow_mb_un_reset_ide,
};
static struct mb_ops keylargo_mb_ops __pmacdata = {
name: "KeyLargo",
content: keylargo_mb_content,
power: keylargo_mb_power,
setup_bus: keylargo_mb_setup_bus,
un_reset: keylargo_mb_un_reset,
un_reset_ide: keylargo_mb_un_reset_ide,
};
/*
* It seems that the bit for the media-bay interrupt in the IRQ_LEVEL
* register is always set when there is something in the media bay.
* This causes problems for the interrupt code if we attach an interrupt
* handler to the media-bay interrupt, because it tends to go into
* an infinite loop calling the media bay interrupt handler.
* Therefore we do it all by polling the media bay once each tick.
*/
void __pmac
media_bay_init(void)
{
struct device_node *np;
int n,i;
for (i=0; i<MAX_BAYS; i++) {
memset((char *)&media_bays[i], 0, sizeof(struct media_bay_info));
media_bays[i].content_id = -1;
#ifdef CONFIG_BLK_DEV_IDE
media_bays[i].cd_index = -1;
#endif
}
np = find_devices("media-bay");
n = 0;
while(np && (n<MAX_BAYS)) {
struct media_bay_info* bay = &media_bays[n];
if (!np->parent || np->n_addrs == 0 || !request_OF_resource(np, 0, NULL)) {
np = np->next;
printk(KERN_ERR "media-bay: Can't request IO resource !\n");
continue;
}
bay->mb_type = mb_ohare;
if (device_is_compatible(np, "keylargo-media-bay")) {
bay->mb_type = mb_keylargo;
bay->ops = &keylargo_mb_ops;
} else if (device_is_compatible(np, "heathrow-media-bay")) {
bay->mb_type = mb_heathrow;
bay->ops = &heathrow_mb_ops;
} else if (device_is_compatible(np, "ohare-media-bay")) {
bay->mb_type = mb_ohare;
bay->ops = &ohare_mb_ops;
} else {
printk(KERN_ERR "mediabay: Unknown bay type !\n");
np = np->next;
continue;
}
bay->base = (volatile u32*)ioremap(np->parent->addrs[0].address, 0x1000);
/* Enable probe logic on keylargo */
if (bay->mb_type == mb_keylargo)
MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_ENABLE);
#ifdef MB_USE_INTERRUPTS
if (np->n_intrs == 0) {
printk(KERN_ERR "media bay %d has no irq\n",n);
np = np->next;
continue;
}
if (request_irq(np->intrs[0].line, media_bay_intr, 0, "Media bay", (void *)n)) {
printk(KERN_ERR "Couldn't get IRQ %d for media bay %d\n",
np->intrs[0].line, n);
np = np->next;
continue;
}
#endif
media_bay_count++;
printk(KERN_INFO "mediabay%d: Registered %s media-bay\n", n, bay->ops->name);
bay->dev_node = np;
bay->index = n;
/* Force an immediate detect */
set_mb_power(bay, 0);
mdelay(MB_POWER_DELAY);
bay->content_id = MB_NO;
bay->last_value = bay->ops->content(bay);
bay->value_count = MS_TO_HZ(MB_STABLE_DELAY);
bay->state = mb_empty;
do {
mdelay(1000/HZ);
media_bay_step(n);
} while((bay->state != mb_empty) &&
(bay->state != mb_up));
n++;
np=np->next;
}
if (media_bay_count)
{
#ifdef CONFIG_PMAC_PBOOK
pmu_register_sleep_notifier(&mb_sleep_notifier);
#endif /* CONFIG_PMAC_PBOOK */
kernel_thread(media_bay_task, NULL,
CLONE_FS | CLONE_FILES | CLONE_SIGHAND);
}
}
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