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;
}
}
/* Send an ADB command */
static int
pmu_send_request(struct adb_request *req, int sync)
{
int i, ret;
if (!pmu_fully_inited)
{
req->complete = 1;
return -ENXIO;
}
ret = -EINVAL;
switch (req->data[0]) {
case PMU_PACKET:
for (i = 0; i < req->nbytes - 1; ++i)
req->data[i] = req->data[i+1];
--req->nbytes;
if (pmu_data_len[req->data[0]][1] != 0) {
req->reply[0] = ADB_RET_OK;
req->reply_len = 1;
} else
req->reply_len = 0;
ret = pmu_queue_request(req);
break;
case CUDA_PACKET:
switch (req->data[1]) {
case CUDA_GET_TIME:
if (req->nbytes != 2)
break;
req->data[0] = PMU_READ_RTC;
req->nbytes = 1;
req->reply_len = 3;
req->reply[0] = CUDA_PACKET;
req->reply[1] = 0;
req->reply[2] = CUDA_GET_TIME;
ret = pmu_queue_request(req);
break;
case CUDA_SET_TIME:
if (req->nbytes != 6)
break;
req->data[0] = PMU_SET_RTC;
req->nbytes = 5;
for (i = 1; i <= 4; ++i)
req->data[i] = req->data[i+1];
req->reply_len = 3;
req->reply[0] = CUDA_PACKET;
req->reply[1] = 0;
req->reply[2] = CUDA_SET_TIME;
ret = pmu_queue_request(req);
break;
case CUDA_GET_PRAM:
if (req->nbytes != 4)
break;
req->data[0] = PMU_READ_NVRAM;
req->data[1] = req->data[2];
req->data[2] = req->data[3];
req->nbytes = 3;
req->reply_len = 3;
req->reply[0] = CUDA_PACKET;
req->reply[1] = 0;
req->reply[2] = CUDA_GET_PRAM;
ret = pmu_queue_request(req);
break;
case CUDA_SET_PRAM:
if (req->nbytes != 5)
break;
req->data[0] = PMU_WRITE_NVRAM;
req->data[1] = req->data[2];
req->data[2] = req->data[3];
req->data[3] = req->data[4];
req->nbytes = 4;
req->reply_len = 3;
req->reply[0] = CUDA_PACKET;
req->reply[1] = 0;
req->reply[2] = CUDA_SET_PRAM;
ret = pmu_queue_request(req);
break;
}
break;
case ADB_PACKET:
for (i = req->nbytes - 1; i > 1; --i)
req->data[i+2] = req->data[i];
req->data[3] = req->nbytes - 2;
req->data[2] = pmu_adb_flags;
/*req->data[1] = req->data[1];*/
req->data[0] = PMU_ADB_CMD;
req->nbytes += 2;
req->reply_expected = 1;
req->reply_len = 0;
ret = pmu_queue_request(req);
break;
}
if (ret)
{
req->complete = 1;
return ret;
}
if (sync) {
while (!req->complete)
pmu_poll();
}
return 0;
}
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;
}
