예제 #1
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);
}
예제 #2
0
__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;
	}
}
예제 #3
0
파일: via-pmu68k.c 프로젝트: 020gzh/linux
/* 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;
}
예제 #4
0
파일: via-pmu68k.c 프로젝트: 020gzh/linux
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;
}