[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/macintosh/mediabay.c b/src/kernel/linux/v4.14/drivers/macintosh/mediabay.c
new file mode 100644
index 0000000..d98e566
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/macintosh/mediabay.c
@@ -0,0 +1,757 @@
+/*
+ * 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.
+ */
+#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/stddef.h>
+#include <linux/init.h>
+#include <linux/kthread.h>
+#include <linux/mutex.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>
+
+#define MB_FCR32(bay, r) ((bay)->base + ((r) >> 2))
+#define MB_FCR8(bay, r) (((volatile u8 __iomem *)((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;
+ void (*init)(struct media_bay_info *bay);
+ 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 {
+ u32 __iomem *base;
+ int content_id;
+ int state;
+ int last_value;
+ int value_count;
+ int timer;
+ struct macio_dev *mdev;
+ const struct mb_ops* ops;
+ int index;
+ int cached_gpio;
+ int sleeping;
+ int user_lock;
+ struct mutex lock;
+};
+
+#define MAX_BAYS 2
+
+static struct media_bay_info media_bays[MAX_BAYS];
+static int media_bay_count = 0;
+
+/*
+ * Wait that number of ms between each step in normal polling mode
+ */
+#define MB_POLL_DELAY 25
+
+/*
+ * 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 50
+
+/*
+ * 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 calling into the driver
+ */
+#define MB_IDE_WAIT 1000
+
+/*
+ * 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_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
+ohare_mb_content(struct media_bay_info *bay)
+{
+ return (MB_IN32(bay, OHARE_MBCR) >> 12) & 7;
+}
+
+static u8
+heathrow_mb_content(struct media_bay_info *bay)
+{
+ return (MB_IN32(bay, HEATHROW_MBCR) >> 12) & 7;
+}
+
+static u8
+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
+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
+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
+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
+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
+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
+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
+ohare_mb_un_reset(struct media_bay_info* bay)
+{
+ MB_BIS(bay, OHARE_FCR, OH_BAY_RESET_N);
+}
+
+static void keylargo_mb_init(struct media_bay_info *bay)
+{
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_ENABLE);
+}
+
+static void heathrow_mb_un_reset(struct media_bay_info* bay)
+{
+ MB_BIS(bay, HEATHROW_FCR, HRW_BAY_RESET_N);
+}
+
+static void keylargo_mb_un_reset(struct media_bay_info* bay)
+{
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET);
+}
+
+static void ohare_mb_un_reset_ide(struct media_bay_info* bay)
+{
+ MB_BIS(bay, OHARE_FCR, OH_IDE1_RESET_N);
+}
+
+static void heathrow_mb_un_reset_ide(struct media_bay_info* bay)
+{
+ MB_BIS(bay, HEATHROW_FCR, HRW_IDE1_RESET_N);
+}
+
+static void keylargo_mb_un_reset_ide(struct media_bay_info* bay)
+{
+ MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N);
+}
+
+static inline void 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;
+ pr_debug("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;
+ pr_debug("mediabay%d: powering down\n", bay->index);
+ }
+ bay->timer = msecs_to_jiffies(MB_POWER_DELAY);
+}
+
+static void poll_media_bay(struct media_bay_info* bay)
+{
+ int id = bay->ops->content(bay);
+
+ static char *mb_content_types[] = {
+ "a floppy drive",
+ "a floppy drive",
+ "an unsupported audio device",
+ "an ATA device",
+ "an unsupported PCI device",
+ "an unknown device",
+ };
+
+ if (id != bay->last_value) {
+ bay->last_value = id;
+ bay->value_count = 0;
+ return;
+ }
+ if (id == bay->content_id)
+ return;
+
+ bay->value_count += msecs_to_jiffies(MB_POLL_DELAY);
+ if (bay->value_count >= msecs_to_jiffies(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;
+ pr_debug("mediabay%d: forcing MB_NO\n", bay->index);
+ }
+ pr_debug("mediabay%d: switching to %d\n", bay->index, id);
+ set_mb_power(bay, id != MB_NO);
+ bay->content_id = id;
+ if (id >= MB_NO || id < 0)
+ printk(KERN_INFO "mediabay%d: Bay is now empty\n", bay->index);
+ else
+ printk(KERN_INFO "mediabay%d: Bay contains %s\n",
+ bay->index, mb_content_types[id]);
+ }
+}
+
+int check_media_bay(struct macio_dev *baydev)
+{
+ struct media_bay_info* bay;
+ int id;
+
+ if (baydev == NULL)
+ return MB_NO;
+
+ /* This returns an instant snapshot, not locking, sine
+ * we may be called with the bay lock held. The resulting
+ * fuzzyness of the result if called at the wrong time is
+ * not actually a huge deal
+ */
+ bay = macio_get_drvdata(baydev);
+ if (bay == NULL)
+ return MB_NO;
+ id = bay->content_id;
+ if (bay->state != mb_up)
+ return MB_NO;
+ if (id == MB_FD1)
+ return MB_FD;
+ return id;
+}
+EXPORT_SYMBOL_GPL(check_media_bay);
+
+void lock_media_bay(struct macio_dev *baydev)
+{
+ struct media_bay_info* bay;
+
+ if (baydev == NULL)
+ return;
+ bay = macio_get_drvdata(baydev);
+ if (bay == NULL)
+ return;
+ mutex_lock(&bay->lock);
+ bay->user_lock = 1;
+}
+EXPORT_SYMBOL_GPL(lock_media_bay);
+
+void unlock_media_bay(struct macio_dev *baydev)
+{
+ struct media_bay_info* bay;
+
+ if (baydev == NULL)
+ return;
+ bay = macio_get_drvdata(baydev);
+ if (bay == NULL)
+ return;
+ if (bay->user_lock) {
+ bay->user_lock = 0;
+ mutex_unlock(&bay->lock);
+ }
+}
+EXPORT_SYMBOL_GPL(unlock_media_bay);
+
+static int mb_broadcast_hotplug(struct device *dev, void *data)
+{
+ struct media_bay_info* bay = data;
+ struct macio_dev *mdev;
+ struct macio_driver *drv;
+ int state;
+
+ if (dev->bus != &macio_bus_type)
+ return 0;
+
+ state = bay->state == mb_up ? bay->content_id : MB_NO;
+ if (state == MB_FD1)
+ state = MB_FD;
+ mdev = to_macio_device(dev);
+ drv = to_macio_driver(dev->driver);
+ if (dev->driver && drv->mediabay_event)
+ drv->mediabay_event(mdev, state);
+ return 0;
+}
+
+static void 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 run state machine */
+ if (bay->timer != 0) {
+ bay->timer -= msecs_to_jiffies(MB_POLL_DELAY);
+ if (bay->timer > 0)
+ return;
+ bay->timer = 0;
+ }
+
+ switch(bay->state) {
+ case mb_powering_up:
+ if (bay->ops->setup_bus(bay, bay->last_value) < 0) {
+ pr_debug("mediabay%d: device not supported (kind:%d)\n",
+ i, bay->content_id);
+ set_mb_power(bay, 0);
+ break;
+ }
+ bay->timer = msecs_to_jiffies(MB_RESET_DELAY);
+ bay->state = mb_enabling_bay;
+ pr_debug("mediabay%d: enabling (kind:%d)\n", i, bay->content_id);
+ break;
+ case mb_enabling_bay:
+ bay->ops->un_reset(bay);
+ bay->timer = msecs_to_jiffies(MB_SETUP_DELAY);
+ bay->state = mb_resetting;
+ pr_debug("mediabay%d: releasing bay reset (kind:%d)\n",
+ i, bay->content_id);
+ break;
+ case mb_resetting:
+ if (bay->content_id != MB_CD) {
+ pr_debug("mediabay%d: bay is up (kind:%d)\n", i,
+ bay->content_id);
+ bay->state = mb_up;
+ device_for_each_child(&bay->mdev->ofdev.dev,
+ bay, mb_broadcast_hotplug);
+ break;
+ }
+ pr_debug("mediabay%d: releasing ATA reset (kind:%d)\n",
+ i, bay->content_id);
+ bay->ops->un_reset_ide(bay);
+ bay->timer = msecs_to_jiffies(MB_IDE_WAIT);
+ bay->state = mb_ide_resetting;
+ break;
+
+ case mb_ide_resetting:
+ pr_debug("mediabay%d: bay is up (kind:%d)\n", i, bay->content_id);
+ bay->state = mb_up;
+ device_for_each_child(&bay->mdev->ofdev.dev,
+ bay, mb_broadcast_hotplug);
+ break;
+
+ case mb_powering_down:
+ bay->state = mb_empty;
+ device_for_each_child(&bay->mdev->ofdev.dev,
+ bay, mb_broadcast_hotplug);
+ pr_debug("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 media_bay_task(void *x)
+{
+ int i;
+
+ while (!kthread_should_stop()) {
+ for (i = 0; i < media_bay_count; ++i) {
+ mutex_lock(&media_bays[i].lock);
+ if (!media_bays[i].sleeping)
+ media_bay_step(i);
+ mutex_unlock(&media_bays[i].lock);
+ }
+
+ msleep_interruptible(MB_POLL_DELAY);
+ }
+ return 0;
+}
+
+static int media_bay_attach(struct macio_dev *mdev,
+ const struct of_device_id *match)
+{
+ struct media_bay_info* bay;
+ u32 __iomem *regbase;
+ struct device_node *ofnode;
+ unsigned long base;
+ int i;
+
+ ofnode = mdev->ofdev.dev.of_node;
+
+ if (macio_resource_count(mdev) < 1)
+ return -ENODEV;
+ if (macio_request_resources(mdev, "media-bay"))
+ return -EBUSY;
+ /* Media bay registers are located at the beginning of the
+ * mac-io chip, for now, we trick and align down the first
+ * resource passed in
+ */
+ base = macio_resource_start(mdev, 0) & 0xffff0000u;
+ regbase = (u32 __iomem *)ioremap(base, 0x100);
+ if (regbase == NULL) {
+ macio_release_resources(mdev);
+ return -ENOMEM;
+ }
+
+ i = media_bay_count++;
+ bay = &media_bays[i];
+ bay->mdev = mdev;
+ bay->base = regbase;
+ bay->index = i;
+ bay->ops = match->data;
+ bay->sleeping = 0;
+ mutex_init(&bay->lock);
+
+ /* Init HW probing */
+ if (bay->ops->init)
+ bay->ops->init(bay);
+
+ printk(KERN_INFO "mediabay%d: Registered %s media-bay\n", i, bay->ops->name);
+
+ /* Force an immediate detect */
+ set_mb_power(bay, 0);
+ msleep(MB_POWER_DELAY);
+ bay->content_id = MB_NO;
+ bay->last_value = bay->ops->content(bay);
+ bay->value_count = msecs_to_jiffies(MB_STABLE_DELAY);
+ bay->state = mb_empty;
+
+ /* Mark us ready by filling our mdev data */
+ macio_set_drvdata(mdev, bay);
+
+ /* Startup kernel thread */
+ if (i == 0)
+ kthread_run(media_bay_task, NULL, "media-bay");
+
+ return 0;
+
+}
+
+static int media_bay_suspend(struct macio_dev *mdev, pm_message_t state)
+{
+ struct media_bay_info *bay = macio_get_drvdata(mdev);
+
+ if (state.event != mdev->ofdev.dev.power.power_state.event
+ && (state.event & PM_EVENT_SLEEP)) {
+ mutex_lock(&bay->lock);
+ bay->sleeping = 1;
+ set_mb_power(bay, 0);
+ mutex_unlock(&bay->lock);
+ msleep(MB_POLL_DELAY);
+ mdev->ofdev.dev.power.power_state = state;
+ }
+ return 0;
+}
+
+static int media_bay_resume(struct macio_dev *mdev)
+{
+ struct media_bay_info *bay = macio_get_drvdata(mdev);
+
+ if (mdev->ofdev.dev.power.power_state.event != PM_EVENT_ON) {
+ mdev->ofdev.dev.power.power_state = PMSG_ON;
+
+ /* 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 */
+ mutex_lock(&bay->lock);
+ set_mb_power(bay, 0);
+ msleep(MB_POWER_DELAY);
+ if (bay->ops->content(bay) != bay->content_id) {
+ printk("mediabay%d: Content changed during sleep...\n", bay->index);
+ mutex_unlock(&bay->lock);
+ return 0;
+ }
+ set_mb_power(bay, 1);
+ bay->last_value = bay->content_id;
+ bay->value_count = msecs_to_jiffies(MB_STABLE_DELAY);
+ bay->timer = msecs_to_jiffies(MB_POWER_DELAY);
+ do {
+ msleep(MB_POLL_DELAY);
+ media_bay_step(bay->index);
+ } while((bay->state != mb_empty) &&
+ (bay->state != mb_up));
+ bay->sleeping = 0;
+ mutex_unlock(&bay->lock);
+ }
+ return 0;
+}
+
+
+/* Definitions of "ops" structures.
+ */
+static const struct mb_ops ohare_mb_ops = {
+ .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 const struct mb_ops heathrow_mb_ops = {
+ .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 const struct mb_ops keylargo_mb_ops = {
+ .name = "KeyLargo",
+ .init = keylargo_mb_init,
+ .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.
+ */
+
+static struct of_device_id media_bay_match[] =
+{
+ {
+ .name = "media-bay",
+ .compatible = "keylargo-media-bay",
+ .data = &keylargo_mb_ops,
+ },
+ {
+ .name = "media-bay",
+ .compatible = "heathrow-media-bay",
+ .data = &heathrow_mb_ops,
+ },
+ {
+ .name = "media-bay",
+ .compatible = "ohare-media-bay",
+ .data = &ohare_mb_ops,
+ },
+ {},
+};
+
+static struct macio_driver media_bay_driver =
+{
+ .driver = {
+ .name = "media-bay",
+ .of_match_table = media_bay_match,
+ },
+ .probe = media_bay_attach,
+ .suspend = media_bay_suspend,
+ .resume = media_bay_resume
+};
+
+static int __init media_bay_init(void)
+{
+ int 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;
+ }
+ if (!machine_is(powermac))
+ return 0;
+
+ macio_register_driver(&media_bay_driver);
+
+ return 0;
+}
+
+device_initcall(media_bay_init);