1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/mxc/vpu_malone/vpu_pm.c b/drivers/mxc/vpu_malone/vpu_pm.c
new file mode 100644
index 000000000000..c9dd401c541d
--- /dev/null
+++ b/drivers/mxc/vpu_malone/vpu_pm.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2019 NXP
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/*
+ *
+ * @file vpu_pm.c
+ *
+ */
+
+#include "vpu_pm.h"
+
+int vpu_attach_pm_domains(struct vpu_dev *dev)
+{
+	int ret = 0;
+
+	dev->pd_vpu = dev_pm_domain_attach_by_name(&dev->plat_dev->dev, "vpu");
+	if (IS_ERR(dev->pd_vpu)) {
+		vpu_err("error: %s unable to get vpu power domain\n", __func__);
+		ret = PTR_ERR(dev->pd_vpu);
+		goto err;
+	}
+	dev->pd_vpu_link = device_link_add(&dev->plat_dev->dev, dev->pd_vpu,
+		DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE);
+	if (IS_ERR(dev->pd_vpu_link)) {
+		vpu_err("error: %s unable to link vpu power domain\n", __func__);
+		ret = PTR_ERR(dev->pd_vpu_link);
+		goto err;
+	}
+
+	dev->pd_dec = dev_pm_domain_attach_by_name(&dev->plat_dev->dev, "vpudec");
+	if (IS_ERR(dev->pd_dec)) {
+		vpu_err("error: %s unable to get vpu dec power domain\n", __func__);
+		ret = PTR_ERR(dev->pd_dec);
+		goto err;
+	}
+	dev->pd_dec_link = device_link_add(&dev->plat_dev->dev, dev->pd_dec,
+		DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE);
+	if (IS_ERR(dev->pd_dec_link)) {
+		vpu_err("error: %s unable to link vpu dec power domain\n", __func__);
+		ret = PTR_ERR(dev->pd_dec_link);
+		goto err;
+	}
+
+	dev->pd_mu = dev_pm_domain_attach_by_name(&dev->plat_dev->dev, "vpumu0");
+	if (IS_ERR(dev->pd_mu)) {
+		vpu_err("error: %s unable to get vpu mu0 power domain\n", __func__);
+		ret = PTR_ERR(dev->pd_mu);
+		goto err;
+	}
+	dev->pd_mu_link = device_link_add(&dev->plat_dev->dev, dev->pd_mu,
+		DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE);
+	if (IS_ERR(dev->pd_mu_link)) {
+		vpu_err("error: %s unable to link vpu mu0 power domain\n", __func__);
+		ret = PTR_ERR(dev->pd_mu_link);
+		goto err;
+	}
+
+	return ret;
+err:
+	vpu_detach_pm_domains(dev);
+	return ret;
+}
+
+void vpu_detach_pm_domains(struct vpu_dev *dev)
+{
+	if (dev->pd_vpu_link && !IS_ERR(dev->pd_vpu_link))
+		device_link_del(dev->pd_vpu_link);
+	if (dev->pd_vpu && !IS_ERR(dev->pd_vpu))
+		dev_pm_domain_detach(dev->pd_vpu, true);
+
+	if (dev->pd_dec_link && !IS_ERR(dev->pd_dec_link))
+		device_link_del(dev->pd_dec_link);
+	if (dev->pd_dec && !IS_ERR(dev->pd_dec))
+		dev_pm_domain_detach(dev->pd_dec, true);
+
+	if (dev->pd_mu_link && !IS_ERR(dev->pd_mu_link))
+		device_link_del(dev->pd_mu_link);
+	if (dev->pd_mu && !IS_ERR(dev->pd_mu))
+		dev_pm_domain_detach(dev->pd_mu, true);
+
+	dev->pd_vpu = NULL;
+	dev->pd_vpu_link = NULL;
+	dev->pd_dec = NULL;
+	dev->pd_dec_link = NULL;
+	dev->pd_mu = NULL;
+	dev->pd_mu_link = NULL;
+}