drivers/clocksource/sh_mtu2.c

33 	struct sh_mtu2_device *mtu;
161 		return ioread8(ch->mtu->mapbase + 0x280);
177 		return iowrite8(value, ch->mtu->mapbase + 0x280);
192 	raw_spin_lock_irqsave(&ch->mtu->lock, flags);
201 	raw_spin_unlock_irqrestore(&ch->mtu->lock, flags);
210 	pm_runtime_get_sync(&ch->mtu->pdev->dev);
211 	dev_pm_syscore_device(&ch->mtu->pdev->dev, true);
214 	ret = clk_enable(ch->mtu->clk);
216 		dev_err(&ch->mtu->pdev->dev, "ch%u: cannot enable clock\n",
224 	rate = clk_get_rate(ch->mtu->clk) / 64;
251 	clk_disable(ch->mtu->clk);
253 	dev_pm_syscore_device(&ch->mtu->pdev->dev, false);
254 	pm_runtime_put(&ch->mtu->pdev->dev);
292 	dev_info(&ch->mtu->pdev->dev, "ch%u: used for periodic clock events\n",
300 	dev_pm_genpd_suspend(&ced_to_sh_mtu2(ced)->mtu->pdev->dev);
305 	dev_pm_genpd_resume(&ced_to_sh_mtu2(ced)->mtu->pdev->dev);
322 	dev_info(&ch->mtu->pdev->dev, "ch%u: used for clock events\n",
329 	ch->mtu->has_clockevent = true;
340 				 struct sh_mtu2_device *mtu)
346 	ch->mtu = mtu;
349 	irq = platform_get_irq_byname(mtu->pdev, name);
357 			  dev_name(&ch->mtu->pdev->dev), ch);
359 		dev_err(&ch->mtu->pdev->dev, "ch%u: failed to request irq %d\n",
364 	ch->base = mtu->mapbase + sh_mtu2_channel_offsets[index];
367 	return sh_mtu2_register(ch, dev_name(&mtu->pdev->dev));
370 static int sh_mtu2_map_memory(struct sh_mtu2_device *mtu)
374 	res = platform_get_resource(mtu->pdev, IORESOURCE_MEM, 0);
376 		dev_err(&mtu->pdev->dev, "failed to get I/O memory\n");
380 	mtu->mapbase = ioremap(res->start, resource_size(res));
381 	if (mtu->mapbase == NULL)
387 static int sh_mtu2_setup(struct sh_mtu2_device *mtu,
393 	mtu->pdev = pdev;
395 	raw_spin_lock_init(&mtu->lock);
398 	mtu->clk = clk_get(&mtu->pdev->dev, "fck");
399 	if (IS_ERR(mtu->clk)) {
400 		dev_err(&mtu->pdev->dev, "cannot get clock\n");
401 		return PTR_ERR(mtu->clk);
404 	ret = clk_prepare(mtu->clk);
409 	ret = sh_mtu2_map_memory(mtu);
411 		dev_err(&mtu->pdev->dev, "failed to remap I/O memory\n");
420 	mtu->num_channels = min_t(unsigned int, ret,
423 	mtu->channels = kcalloc(mtu->num_channels, sizeof(*mtu->channels),
425 	if (mtu->channels == NULL) {
430 	for (i = 0; i < mtu->num_channels; ++i) {
431 		ret = sh_mtu2_setup_channel(&mtu->channels[i], i, mtu);
436 	platform_set_drvdata(pdev, mtu);
441 	kfree(mtu->channels);
442 	iounmap(mtu->mapbase);
444 	clk_unprepare(mtu->clk);
446 	clk_put(mtu->clk);
452 	struct sh_mtu2_device *mtu = platform_get_drvdata(pdev);
460 	if (mtu) {
465 	mtu = kzalloc(sizeof(*mtu), GFP_KERNEL);
466 	if (mtu == NULL)
469 	ret = sh_mtu2_setup(mtu, pdev);
471 		kfree(mtu);
479 	if (mtu->has_clockevent)