int tegra_powergate_power_off(int id)
{
if (id < 0 || id >= tegra_num_powerdomains)
return -EINVAL;
return tegra_powergate_set(id, false);
}
int tegra_powergate_power_off(int id)
{
if (id < 0 || id >= TEGRA_NUM_POWERGATE)
return -EINVAL;
return tegra_powergate_set(id, false);
}
int unpowergate_module(int id)
{
if (!pg_ops) {
pr_info("This SOC doesn't support powergating\n");
return -EINVAL;
}
if (id < 0 || id >= pg_ops->num_powerdomains)
return -EINVAL;
return tegra_powergate_set(id, true);
}
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;
}
int tegra1xx_powergate(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);
ret = partition_clk_enable(pg_info);
if (ret)
WARN(1, "Couldn't enable clock");
udelay(10);
tegra_powergate_mc_flush(id);
udelay(10);
powergate_partition_assert_reset(pg_info);
udelay(10);
/* Powergating is done only if refcnt of all clks is 0 */
partition_clk_disable(pg_info);
udelay(10);
ret = tegra_powergate_set(id, false);
if (ret)
goto err_power_off;
return 0;
err_power_off:
WARN(1, "Could not Powergate Partition %d", id);
return ret;
}
