static int arizona_runtime_resume()

in arizona-core.c [528:652]

• 105 lines of code
• 25 McCabe index (conditional complexity)

static int arizona_runtime_resume(struct device *dev)
{
	struct arizona *arizona = dev_get_drvdata(dev);
	int ret;

	dev_dbg(arizona->dev, "Leaving AoD mode\n");

	if (arizona->has_fully_powered_off) {
		dev_dbg(arizona->dev, "Re-enabling core supplies\n");

		ret = regulator_bulk_enable(arizona->num_core_supplies,
					    arizona->core_supplies);
		if (ret) {
			dev_err(dev, "Failed to enable core supplies: %d\n",
				ret);
			return ret;
		}
	}

	ret = regulator_enable(arizona->dcvdd);
	if (ret != 0) {
		dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret);
		if (arizona->has_fully_powered_off)
			regulator_bulk_disable(arizona->num_core_supplies,
					       arizona->core_supplies);
		return ret;
	}

	if (arizona->has_fully_powered_off) {
		arizona_disable_reset(arizona);
		enable_irq(arizona->irq);
		arizona->has_fully_powered_off = false;
	}

	regcache_cache_only(arizona->regmap, false);

	switch (arizona->type) {
	case WM5102:
		if (arizona->external_dcvdd) {
			ret = arizona_connect_dcvdd(arizona);
			if (ret != 0)
				goto err;
		}

		ret = wm5102_patch(arizona);
		if (ret != 0) {
			dev_err(arizona->dev, "Failed to apply patch: %d\n",
				ret);
			goto err;
		}

		ret = wm5102_apply_hardware_patch(arizona);
		if (ret) {
			dev_err(arizona->dev,
				"Failed to apply hardware patch: %d\n",
				ret);
			goto err;
		}
		break;
	case WM5110:
	case WM8280:
		ret = arizona_wait_for_boot(arizona);
		if (ret)
			goto err;

		if (arizona->external_dcvdd) {
			ret = arizona_connect_dcvdd(arizona);
			if (ret != 0)
				goto err;
		} else {
			/*
			 * As this is only called for the internal regulator
			 * (where we know voltage ranges available) it is ok
			 * to request an exact range.
			 */
			ret = regulator_set_voltage(arizona->dcvdd,
						    1200000, 1200000);
			if (ret < 0) {
				dev_err(arizona->dev,
					"Failed to set resume voltage: %d\n",
					ret);
				goto err;
			}
		}

		ret = wm5110_apply_sleep_patch(arizona);
		if (ret) {
			dev_err(arizona->dev,
				"Failed to re-apply sleep patch: %d\n",
				ret);
			goto err;
		}
		break;
	case WM1831:
	case CS47L24:
		ret = arizona_wait_for_boot(arizona);
		if (ret != 0)
			goto err;
		break;
	default:
		ret = arizona_wait_for_boot(arizona);
		if (ret != 0)
			goto err;

		if (arizona->external_dcvdd) {
			ret = arizona_connect_dcvdd(arizona);
			if (ret != 0)
				goto err;
		}
		break;
	}

	ret = regcache_sync(arizona->regmap);
	if (ret != 0) {
		dev_err(arizona->dev, "Failed to restore register cache\n");
		goto err;
	}

	return 0;

err:
	regcache_cache_only(arizona->regmap, true);
	regulator_disable(arizona->dcvdd);
	return ret;
}