static int __pmu_backlight_update_status(struct backlight_device *bd)
{
struct adb_request req;
int level = bd->props.brightness;
if (bd->props.power != FB_BLANK_UNBLANK ||
bd->props.fb_blank != FB_BLANK_UNBLANK)
level = 0;
if (level > 0) {
int pmulevel = pmu_backlight_get_level_brightness(level);
pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT, pmulevel);
pmu_wait_complete(&req);
pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
PMU_POW_BACKLIGHT | PMU_POW_ON);
pmu_wait_complete(&req);
} else {
pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
PMU_POW_BACKLIGHT | PMU_POW_OFF);
pmu_wait_complete(&req);
}
return 0;
}
void __pmac register_backlight_controller(struct backlight_controller *ctrler,
void *data, char *type)
{
struct device_node* bk_node;
char *prop;
int valid = 0;
/* There's already a matching controller, bail out */
if (backlighter != NULL)
return;
bk_node = find_devices("backlight");
#ifdef CONFIG_ADB_PMU
/* Special case for the old PowerBook since I can't test on it */
backlight_autosave = machine_is_compatible("AAPL,3400/2400")
|| machine_is_compatible("AAPL,3500");
if ((backlight_autosave
|| machine_is_compatible("AAPL,PowerBook1998")
|| machine_is_compatible("PowerBook1,1"))
&& !strcmp(type, "pmu"))
valid = 1;
#endif
if (bk_node) {
prop = get_property(bk_node, "backlight-control", NULL);
if (prop && !strncmp(prop, type, strlen(type)))
valid = 1;
}
if (!valid)
return;
backlighter = ctrler;
backlighter_data = data;
if (bk_node && !backlight_autosave)
prop = get_property(bk_node, "bklt", NULL);
else
prop = NULL;
if (prop) {
backlight_level = ((*prop)+1) >> 1;
if (backlight_level > BACKLIGHT_MAX)
backlight_level = BACKLIGHT_MAX;
}
#ifdef CONFIG_ADB_PMU
if (backlight_autosave) {
struct adb_request req;
pmu_request(&req, NULL, 2, 0xd9, 0);
while (!req.complete)
pmu_poll();
backlight_level = req.reply[0] >> 4;
}
#endif
acquire_console_sem();
if (!backlighter->set_enable(1, backlight_level, data))
backlight_enabled = 1;
release_console_sem();
printk(KERN_INFO "Registered \"%s\" backlight controller,"
"level: %d/15\n", type, backlight_level);
}
__pmac
unsigned long pmac_get_rtc_time(void)
{
struct adb_request req;
/* Get the time from the RTC */
switch (adb_hardware) {
case ADB_VIACUDA:
if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
return 0;
while (!req.complete)
cuda_poll();
if (req.reply_len != 7)
printk(KERN_ERR "pmac_get_rtc_time: got %d byte reply\n",
req.reply_len);
return (req.reply[3] << 24) + (req.reply[4] << 16)
+ (req.reply[5] << 8) + req.reply[6] - RTC_OFFSET;
case ADB_VIAPMU:
if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
return 0;
while (!req.complete)
pmu_poll();
if (req.reply_len != 5)
printk(KERN_ERR "pmac_get_rtc_time: got %d byte reply\n",
req.reply_len);
return (req.reply[1] << 24) + (req.reply[2] << 16)
+ (req.reply[3] << 8) + req.reply[4] - RTC_OFFSET;
default:
return 0;
}
}
void __init pmu_backlight_init()
{
struct backlight_device *bd;
char name[10];
int level, autosave;
/* Special case for the old PowerBook since I can't test on it */
autosave =
machine_is_compatible("AAPL,3400/2400") ||
machine_is_compatible("AAPL,3500");
if (!autosave &&
!pmac_has_backlight_type("pmu") &&
!machine_is_compatible("AAPL,PowerBook1998") &&
!machine_is_compatible("PowerBook1,1"))
return;
snprintf(name, sizeof(name), "pmubl");
bd = backlight_device_register(name, NULL, NULL, &pmu_backlight_data);
if (IS_ERR(bd)) {
printk("pmubl: Backlight registration failed\n");
goto error;
}
pmu_backlight_init_curve(0x7F, 0x46, 0x0E);
level = pmu_backlight_data.max_brightness;
if (autosave) {
/* read autosaved value if available */
struct adb_request req;
pmu_request(&req, NULL, 2, 0xd9, 0);
pmu_wait_complete(&req);
level = pmu_backlight_curve_lookup(
(req.reply[0] >> 4) *
pmu_backlight_data.max_brightness / 15);
}
down(&bd->sem);
bd->props->brightness = level;
bd->props->power = FB_BLANK_UNBLANK;
bd->props->update_status(bd);
up(&bd->sem);
mutex_lock(&pmac_backlight_mutex);
if (!pmac_backlight)
pmac_backlight = bd;
mutex_unlock(&pmac_backlight_mutex);
printk("pmubl: Backlight initialized (%s)\n", name);
return;
error:
return;
}
void __init pmu_backlight_init()
{
struct backlight_properties props;
struct backlight_device *bd;
char name[10];
int level, autosave;
/* Special case for the old PowerBook since I can't test on it */
autosave =
of_machine_is_compatible("AAPL,3400/2400") ||
of_machine_is_compatible("AAPL,3500");
if (!autosave &&
!pmac_has_backlight_type("pmu") &&
!of_machine_is_compatible("AAPL,PowerBook1998") &&
!of_machine_is_compatible("PowerBook1,1"))
return;
snprintf(name, sizeof(name), "pmubl");
memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
bd = backlight_device_register(name, NULL, NULL, &pmu_backlight_data,
&props);
if (IS_ERR(bd)) {
printk(KERN_ERR "PMU Backlight registration failed\n");
return;
}
uses_pmu_bl = 1;
pmu_backlight_init_curve(0x7F, 0x46, 0x0E);
level = bd->props.max_brightness;
if (autosave) {
/* read autosaved value if available */
struct adb_request req;
pmu_request(&req, NULL, 2, 0xd9, 0);
pmu_wait_complete(&req);
level = pmu_backlight_curve_lookup(
(req.reply[0] >> 4) *
bd->props.max_brightness / 15);
}
bd->props.brightness = level;
bd->props.power = FB_BLANK_UNBLANK;
backlight_update_status(bd);
#ifdef CONFIG_DEBUG_PRINTK
printk(KERN_INFO "PMU Backlight initialized (%s)\n", name);
#else
;
#endif
}
static void pmu_req_done(struct adb_request * req)
{
unsigned long flags;
spin_lock_irqsave(&pmu_blink_lock, flags);
if (requested_change != -1 && !pmu_sys_suspended)
pmu_request(&pmu_blink_req, NULL, 4, 0xee, 4, 0, requested_change);
requested_change = -1;
spin_unlock_irqrestore(&pmu_blink_lock, flags);
}
static void pmu_req_done(struct adb_request * req)
{
unsigned long flags;
spin_lock_irqsave(&pmu_blink_lock, flags);
/* if someone requested a change in the meantime
* (we only see the last one which is fine)
* then apply it now */
if (requested_change != -1 && !pmu_sys_suspended)
pmu_request(&pmu_blink_req, NULL, 4, 0xee, 4, 0, requested_change);
/* reset requested change */
requested_change = -1;
spin_unlock_irqrestore(&pmu_blink_lock, flags);
}
static int pmu_backlight_update_status(struct backlight_device *bd)
{
struct adb_request req;
unsigned long flags;
int level = bd->props->brightness;
spin_lock_irqsave(&pmu_backlight_lock, flags);
/* Don't update brightness when sleeping */
if (sleeping)
goto out;
if (bd->props->power != FB_BLANK_UNBLANK ||
bd->props->fb_blank != FB_BLANK_UNBLANK)
level = 0;
if (level > 0) {
int pmulevel = pmu_backlight_get_level_brightness(level);
pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT, pmulevel);
pmu_wait_complete(&req);
pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
PMU_POW_BACKLIGHT | PMU_POW_ON);
pmu_wait_complete(&req);
} else {
pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
PMU_POW_BACKLIGHT | PMU_POW_OFF);
pmu_wait_complete(&req);
}
out:
spin_unlock_irqrestore(&pmu_backlight_lock, flags);
return 0;
}
void pmu_backlight_set_sleep(int sleep)
{
unsigned long flags;
spin_lock_irqsave(&pmu_backlight_lock, flags);
sleeping = sleep;
if (pmac_backlight && uses_pmu_bl) {
if (sleep) {
struct adb_request req;
pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
PMU_POW_BACKLIGHT | PMU_POW_OFF);
pmu_wait_complete(&req);
} else
__pmu_backlight_update_status(pmac_backlight);
}
spin_unlock_irqrestore(&pmu_backlight_lock, flags);
}
static void pmu_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
unsigned long flags;
spin_lock_irqsave(&pmu_blink_lock, flags);
switch (brightness) {
case LED_OFF:
requested_change = 0;
break;
case LED_FULL:
requested_change = 1;
break;
default:
goto out;
break;
}
if (pmu_blink_req.complete && !pmu_sys_suspended)
pmu_request(&pmu_blink_req, NULL, 4, 0xee, 4, 0, requested_change);
out:
spin_unlock_irqrestore(&pmu_blink_lock, flags);
}
static int
pmu_init(void)
{
int timeout;
volatile struct adb_request req;
via2[B] |= TREQ; /* negate TREQ */
via2[DIRB] = (via2[DIRB] | TREQ) & ~TACK; /* TACK in, TREQ out */
pmu_request((struct adb_request *) &req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB);
timeout = 100000;
while (!req.complete) {
if (--timeout < 0) {
printk(KERN_ERR "pmu_init: no response from PMU\n");
return -EAGAIN;
}
udelay(10);
pmu_poll();
}
/* ack all pending interrupts */
timeout = 100000;
interrupt_data[0] = 1;
while (interrupt_data[0] || pmu_state != idle) {
if (--timeout < 0) {
printk(KERN_ERR "pmu_init: timed out acking intrs\n");
return -EAGAIN;
}
if (pmu_state == idle) {
adb_int_pending = 1;
pmu_interrupt(0, NULL);
}
pmu_poll();
udelay(10);
}
pmu_request((struct adb_request *) &req, NULL, 2, PMU_SET_INTR_MASK,
PMU_INT_ADB_AUTO|PMU_INT_SNDBRT|PMU_INT_ADB);
timeout = 100000;
while (!req.complete) {
if (--timeout < 0) {
printk(KERN_ERR "pmu_init: no response from PMU\n");
return -EAGAIN;
}
udelay(10);
pmu_poll();
}
bright_req_1.complete = 1;
bright_req_2.complete = 1;
bright_req_3.complete = 1;
if (request_irq(IRQ_MAC_ADB_SR, pmu_interrupt, 0, "pmu-shift",
pmu_interrupt)) {
printk(KERN_ERR "pmu_init: can't get irq %d\n",
IRQ_MAC_ADB_SR);
return -EAGAIN;
}
if (request_irq(IRQ_MAC_ADB_CL, pmu_interrupt, 0, "pmu-clock",
pmu_interrupt)) {
printk(KERN_ERR "pmu_init: can't get irq %d\n",
IRQ_MAC_ADB_CL);
free_irq(IRQ_MAC_ADB_SR, pmu_interrupt);
return -EAGAIN;
}
pmu_fully_inited = 1;
/* Enable backlight */
pmu_enable_backlight(1);
printk("adb: PMU 68K driver v0.5 for Unified ADB.\n");
return 0;
}
