Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 385 insertions, 0 deletions

diff --git a/roms/u-boot/drivers/power/domain/imx8-power-domain-legacy.c b/roms/u-boot/drivers/power/domain/imx8-power-domain-legacy.c
new file mode 100644
index 000000000..e2fae2dbc
--- /dev/null
+++ b/roms/u-boot/drivers/power/domain/imx8-power-domain-legacy.c
@@ -0,0 +1,385 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2017 NXP
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <log.h>
+#include <malloc.h>
+#include <power-domain-uclass.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/arch/power-domain.h>
+#include <dm/device-internal.h>
+#include <dm/device.h>
+#include <dm/uclass-internal.h>
+#include <asm/arch/sci/sci.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct imx8_power_domain_priv {
+	bool state_on;
+};
+
+static bool check_device_power_off(struct udevice *dev,
+				   const char *permanent_on_devices[],
+				   int size)
+{
+	int i;
+
+	for (i = 0; i < size; i++) {
+		if (!strcmp(dev->name, permanent_on_devices[i]))
+			return false;
+	}
+
+	return true;
+}
+
+void imx8_power_off_pd_devices(const char *permanent_on_devices[], int size)
+{
+	struct udevice *dev;
+	struct power_domain pd;
+
+	for (uclass_find_first_device(UCLASS_POWER_DOMAIN, &dev); dev;
+	     uclass_find_next_device(&dev)) {
+		if (!device_active(dev))
+			continue;
+		/*
+		 * Power off active pd devices except the permanent
+		 * power on devices
+		 */
+		if (check_device_power_off(dev, permanent_on_devices, size)) {
+			pd.dev = dev;
+			power_domain_off(&pd);
+		}
+	}
+}
+
+int imx8_power_domain_lookup_name(const char *name,
+				  struct power_domain *power_domain)
+{
+	struct udevice *dev;
+	struct power_domain_ops *ops;
+	int ret;
+
+	debug("%s(power_domain=%p name=%s)\n", __func__, power_domain, name);
+
+	ret = uclass_get_device_by_name(UCLASS_POWER_DOMAIN, name, &dev);
+	if (ret) {
+		printf("%s fail: %s, ret = %d\n", __func__, name, ret);
+		return ret;
+	}
+
+	ops = (struct power_domain_ops *)dev->driver->ops;
+	power_domain->dev = dev;
+	ret = ops->request(power_domain);
+	if (ret) {
+		debug("ops->request() failed: %d\n", ret);
+		return ret;
+	}
+
+	debug("%s ok: %s\n", __func__, dev->name);
+
+	return 0;
+}
+
+static int imx8_power_domain_request(struct power_domain *power_domain)
+{
+	debug("%s(power_domain=%p)\n", __func__, power_domain);
+
+	return 0;
+}
+
+static int imx8_power_domain_free(struct power_domain *power_domain)
+{
+	debug("%s(power_domain=%p)\n", __func__, power_domain);
+
+	return 0;
+}
+
+static int imx8_power_domain_on(struct power_domain *power_domain)
+{
+	struct udevice *dev = power_domain->dev;
+	struct imx8_power_domain_plat *pdata;
+	struct imx8_power_domain_priv *ppriv;
+	sc_err_t ret;
+	int err;
+
+	struct power_domain parent_domain;
+	struct udevice *parent = dev_get_parent(dev);
+
+	/* Need to power on parent node first */
+	if (device_get_uclass_id(parent) == UCLASS_POWER_DOMAIN) {
+		parent_domain.dev = parent;
+		err = imx8_power_domain_on(&parent_domain);
+		if (err)
+			return err;
+	}
+
+	pdata = (struct imx8_power_domain_plat *)dev_get_plat(dev);
+	ppriv = (struct imx8_power_domain_priv *)dev_get_priv(dev);
+
+	debug("%s(power_domain=%s) resource_id %d\n", __func__, dev->name,
+	      pdata->resource_id);
+
+	/* Already powered on */
+	if (ppriv->state_on)
+		return 0;
+
+	if (pdata->resource_id != SC_R_NONE) {
+		if (!sc_rm_is_resource_owned(-1, pdata->resource_id))
+			printf("%s [%d] not owned by curr partition\n", dev->name, pdata->resource_id);
+
+		ret = sc_pm_set_resource_power_mode(-1, pdata->resource_id,
+						    SC_PM_PW_MODE_ON);
+		if (ret) {
+			printf("Error: %s Power up failed! (error = %d)\n",
+			       dev->name, ret);
+			return -EIO;
+		}
+	}
+
+	ppriv->state_on = true;
+	debug("%s is powered on\n", dev->name);
+
+	return 0;
+}
+
+static int imx8_power_domain_off_node(struct power_domain *power_domain)
+{
+	struct udevice *dev = power_domain->dev;
+	struct udevice *child;
+	struct imx8_power_domain_priv *ppriv;
+	struct imx8_power_domain_priv *child_ppriv;
+	struct imx8_power_domain_plat *pdata;
+	sc_err_t ret;
+
+	ppriv = dev_get_priv(dev);
+	pdata = dev_get_plat(dev);
+
+	debug("%s, %s, state_on %d\n", __func__, dev->name, ppriv->state_on);
+
+	/* Already powered off */
+	if (!ppriv->state_on)
+		return 0;
+
+	/* Check if all subnodes are off */
+	for (device_find_first_child(dev, &child);
+		child;
+		device_find_next_child(&child)) {
+		if (device_active(child)) {
+			child_ppriv =
+			(struct imx8_power_domain_priv *)dev_get_priv(child);
+			if (child_ppriv->state_on)
+				return -EPERM;
+		}
+	}
+
+	if (pdata->resource_id != SC_R_NONE) {
+		ret = sc_pm_set_resource_power_mode(-1, pdata->resource_id,
+						    SC_PM_PW_MODE_OFF);
+		if (ret) {
+			if (!sc_rm_is_resource_owned(-1, pdata->resource_id)) {
+				printf("%s not owned by curr partition %d\n", dev->name, pdata->resource_id);
+				return 0;
+			}
+			printf("Error: %s Power off failed! (error = %d)\n",
+			       dev->name, ret);
+			return -EIO;
+		}
+	}
+
+	ppriv->state_on = false;
+	debug("%s is powered off\n", dev->name);
+
+	return 0;
+}
+
+static int imx8_power_domain_off_parentnodes(struct power_domain *power_domain)
+{
+	struct udevice *dev = power_domain->dev;
+	struct udevice *parent = dev_get_parent(dev);
+	struct udevice *child;
+	struct imx8_power_domain_priv *ppriv;
+	struct imx8_power_domain_priv *child_ppriv;
+	struct imx8_power_domain_plat *pdata;
+	sc_err_t ret;
+	struct power_domain parent_pd;
+
+	if (device_get_uclass_id(parent) == UCLASS_POWER_DOMAIN) {
+		pdata =
+		(struct imx8_power_domain_plat *)dev_get_plat(parent);
+		ppriv = (struct imx8_power_domain_priv *)dev_get_priv(parent);
+
+		debug("%s, %s, state_on %d\n", __func__, parent->name,
+		      ppriv->state_on);
+
+		/* Already powered off */
+		if (!ppriv->state_on)
+			return 0;
+
+		/*
+		 * Check if all sibling nodes are off. If yes,
+		 * power off parent
+		 */
+		for (device_find_first_child(parent, &child); child;
+		     device_find_next_child(&child)) {
+			if (device_active(child)) {
+				child_ppriv = (struct imx8_power_domain_priv *)
+						dev_get_priv(child);
+				/* Find a power on sibling */
+				if (child_ppriv->state_on) {
+					debug("sibling %s, state_on %d\n",
+					      child->name,
+					      child_ppriv->state_on);
+					return 0;
+				}
+			}
+		}
+
+		/* power off parent */
+		if (pdata->resource_id != SC_R_NONE) {
+			ret = sc_pm_set_resource_power_mode(-1,
+							    pdata->resource_id,
+							    SC_PM_PW_MODE_OFF);
+			if (ret) {
+				printf("%s Power off failed! (error = %d)\n",
+				       parent->name, ret);
+				return -EIO;
+			}
+		}
+
+		ppriv->state_on = false;
+		debug("%s is powered off\n", parent->name);
+
+		parent_pd.dev = parent;
+		imx8_power_domain_off_parentnodes(&parent_pd);
+	}
+
+	return 0;
+}
+
+static int imx8_power_domain_off(struct power_domain *power_domain)
+{
+	int ret;
+
+	debug("%s(power_domain=%p)\n", __func__, power_domain);
+
+	/* Turn off the node */
+	ret = imx8_power_domain_off_node(power_domain);
+	if (ret) {
+		debug("Can't power off the node of dev %s, ret = %d\n",
+		      power_domain->dev->name, ret);
+		return ret;
+	}
+
+	/* Turn off parent nodes, if sibling nodes are all off */
+	ret = imx8_power_domain_off_parentnodes(power_domain);
+	if (ret) {
+		printf("Failed to power off parent nodes of dev %s, ret = %d\n",
+		       power_domain->dev->name, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int imx8_power_domain_of_xlate(struct power_domain *power_domain,
+				      struct ofnode_phandle_args *args)
+{
+	debug("%s(power_domain=%p)\n", __func__, power_domain);
+
+	/* Do nothing to the xlate, since we don't have args used */
+
+	return 0;
+}
+
+static int imx8_power_domain_bind(struct udevice *dev)
+{
+	int offset;
+	const char *name;
+	int ret = 0;
+
+	debug("%s(dev=%p)\n", __func__, dev);
+
+	offset = dev_of_offset(dev);
+	for (offset = fdt_first_subnode(gd->fdt_blob, offset); offset > 0;
+	     offset = fdt_next_subnode(gd->fdt_blob, offset)) {
+		/* Bind the subnode to this driver */
+		name = fdt_get_name(gd->fdt_blob, offset, NULL);
+
+		ret = device_bind_with_driver_data(dev, dev->driver, name,
+						   dev->driver_data,
+						   offset_to_ofnode(offset),
+						   NULL);
+
+		if (ret == -ENODEV)
+			printf("Driver '%s' refuses to bind\n",
+			       dev->driver->name);
+
+		if (ret)
+			printf("Error binding driver '%s': %d\n",
+			       dev->driver->name, ret);
+	}
+
+	return 0;
+}
+
+static int imx8_power_domain_probe(struct udevice *dev)
+{
+	struct imx8_power_domain_priv *ppriv;
+
+	debug("%s(dev=%s)\n", __func__, dev->name);
+
+	ppriv = (struct imx8_power_domain_priv *)dev_get_priv(dev);
+
+	/* Set default to power off */
+	if (ppriv)
+		ppriv->state_on = false;
+
+	return 0;
+}
+
+static int imx8_power_domain_of_to_plat(struct udevice *dev)
+{
+	int reg;
+	struct imx8_power_domain_plat *pdata = dev_get_plat(dev);
+
+	reg = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "reg", -1);
+	if (reg == -1) {
+		debug("%s: Invalid resource id %d\n", __func__, reg);
+		return -EINVAL;
+	}
+	pdata->resource_id = (sc_rsrc_t)reg;
+
+	debug("%s resource_id %d\n", __func__, pdata->resource_id);
+
+	return 0;
+}
+
+static const struct udevice_id imx8_power_domain_ids[] = {
+	{ .compatible = "nxp,imx8-pd" },
+	{ }
+};
+
+struct power_domain_ops imx8_power_domain_ops = {
+	.request = imx8_power_domain_request,
+	.rfree = imx8_power_domain_free,
+	.on = imx8_power_domain_on,
+	.off = imx8_power_domain_off,
+	.of_xlate = imx8_power_domain_of_xlate,
+};
+
+U_BOOT_DRIVER(imx8_power_domain) = {
+	.name = "imx8_power_domain",
+	.id = UCLASS_POWER_DOMAIN,
+	.of_match = imx8_power_domain_ids,
+	.bind = imx8_power_domain_bind,
+	.probe = imx8_power_domain_probe,
+	.of_to_plat = imx8_power_domain_of_to_plat,
+	.plat_auto	= sizeof(struct imx8_power_domain_plat),
+	.priv_auto	= sizeof(struct imx8_power_domain_priv),
+	.ops = &imx8_power_domain_ops,
+	.flags	= DM_FLAG_DEFAULT_PD_CTRL_OFF,
+};