C++ (Cpp) tegra_powergate_mc_disable示例

示例#1

void nvhost_module_reset(struct device *dev, struct nvhost_module *mod)
{
	dev_dbg(dev,
		"%s: asserting %s module reset (id %d, id2 %d)\n",
		__func__, mod->name,
		mod->desc->powergate_ids[0], mod->desc->powergate_ids[1]);

	/* assert module and mc client reset */
	if (mod->desc->powergate_ids[0] != -1) {
		tegra_powergate_mc_disable(mod->desc->powergate_ids[0]);
		tegra_periph_reset_assert(mod->clk[0]);
		tegra_powergate_mc_flush(mod->desc->powergate_ids[0]);
	}
	if (mod->desc->powergate_ids[1] != -1) {
		tegra_powergate_mc_disable(mod->desc->powergate_ids[1]);
		tegra_periph_reset_assert(mod->clk[1]);
		tegra_powergate_mc_flush(mod->desc->powergate_ids[1]);
	}

	udelay(POWERGATE_DELAY);

	/* deassert reset */
	if (mod->desc->powergate_ids[0] != -1) {
		tegra_powergate_mc_flush_done(mod->desc->powergate_ids[0]);
		tegra_periph_reset_deassert(mod->clk[0]);
		tegra_powergate_mc_enable(mod->desc->powergate_ids[0]);
	}
	if (mod->desc->powergate_ids[1] != -1) {
		tegra_powergate_mc_flush_done(mod->desc->powergate_ids[1]);
		tegra_periph_reset_deassert(mod->clk[1]);
		tegra_powergate_mc_enable(mod->desc->powergate_ids[1]);
	}

	dev_dbg(dev, "%s: module %s out of reset\n",
		__func__, mod->name);
}

示例#2

static int tegra_camera_reset(struct tegra_camera_dev *dev, uint id)
{
	struct clk *clk;
	int mc_client = -1;

	switch (id) {
	case TEGRA_CAMERA_MODULE_VI:
		clk = dev->vi_clk;
        mc_client = TEGRA_POWERGATE_VENC;
		break;
	case TEGRA_CAMERA_MODULE_ISP:
		clk = dev->isp_clk;
        mc_client = TEGRA_POWERGATE_VENC;
		break;
	case TEGRA_CAMERA_MODULE_CSI:
		clk = dev->csi_clk;
		break;
	default:
		return -EINVAL;
	}

	if (mc_client != -1) {
		tegra_powergate_mc_disable(mc_client);
	}
	tegra_periph_reset_assert(clk);
	if (mc_client != -1) {
		tegra_powergate_mc_flush(mc_client);
	}

	udelay(10);

	if (mc_client != -1) {
		tegra_powergate_mc_flush_done(mc_client);
	}
	tegra_periph_reset_deassert(clk);
	if (mc_client != -1) {
		tegra_powergate_mc_enable(mc_client);
	}

	return 0;
}