C++ (Cpp) tegra_powergate_mc_flush_done Exemples

Exemple #1

Fichier : powergate-ops-t1xx.c Projet : ChristopherLu/manifold_linux

int tegra1xx_unpowergate(int id, struct powergate_partition_info *pg_info)
{
	int ret;

	/* If first clk_ptr is null, fill clk info for the partition */
	if (!pg_info->clk_info[0].clk_ptr)
		get_clk_info(pg_info);

	if (tegra_powergate_is_powered(id))
		return tegra_powergate_reset_module(pg_info);

	ret = tegra_powergate_set(id, true);
	if (ret)
		goto err_power;

	udelay(10);

	/* Un-Powergating fails if all clks are not enabled */
	ret = partition_clk_enable(pg_info);
	if (ret)
		goto err_clk_on;

	udelay(10);

	ret = tegra_powergate_remove_clamping(id);
	if (ret)
		goto err_clamp;

	udelay(10);

	powergate_partition_deassert_reset(pg_info);

	udelay(10);

	tegra_powergate_mc_flush_done(id);

	udelay(10);

	/* Disable all clks enabled earlier. Drivers should enable clks */
	partition_clk_disable(pg_info);

	return 0;

err_clamp:
	partition_clk_disable(pg_info);
err_clk_on:
	powergate_module(id);
err_power:
	WARN(1, "Could not Un-Powergate %d", id);
	return ret;
}

Exemple #2

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);
}

Exemple #3

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;
}