From: Peng Fan Date: Mon, 2 Sep 2019 10:09:49 +0000 (+0800) Subject: power: domain: make imx8-power-domain.c legacy X-Git-Tag: v2020.01-rc3~7^2~25 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=954b9311abc265e569d47876e75100b0e5e191ab;p=oweals%2Fu-boot.git power: domain: make imx8-power-domain.c legacy The current i.MX8 power domain driver is based on i.MX vendor power domain tree which will retire later. The Linux upstream use a single pd node for power domain driver, and U-Boot will adopt that. When U-Boot i.MX8 dts synced with Linux Kernel upstream and related driver ready, the legacy driver will be removed. Signed-off-by: Peng Fan --- diff --git a/drivers/power/domain/Makefile b/drivers/power/domain/Makefile index d0dce14a08..6bd090562f 100644 --- a/drivers/power/domain/Makefile +++ b/drivers/power/domain/Makefile @@ -5,7 +5,7 @@ obj-$(CONFIG_$(SPL_)POWER_DOMAIN) += power-domain-uclass.o obj-$(CONFIG_BCM6328_POWER_DOMAIN) += bcm6328-power-domain.o -obj-$(CONFIG_IMX8_POWER_DOMAIN) += imx8-power-domain.o +obj-$(CONFIG_IMX8_POWER_DOMAIN) += imx8-power-domain-legacy.o obj-$(CONFIG_IMX8M_POWER_DOMAIN) += imx8m-power-domain.o obj-$(CONFIG_MTK_POWER_DOMAIN) += mtk-power-domain.o obj-$(CONFIG_MESON_GX_VPU_POWER_DOMAIN) += meson-gx-pwrc-vpu.o diff --git a/drivers/power/domain/imx8-power-domain-legacy.c b/drivers/power/domain/imx8-power-domain-legacy.c new file mode 100644 index 0000000000..d51dbaa6c0 --- /dev/null +++ b/drivers/power/domain/imx8-power-domain-legacy.c @@ -0,0 +1,315 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2017 NXP + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +struct imx8_power_domain_priv { + bool state_on; +}; + +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_platdata *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_platdata *)dev_get_platdata(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_LAST) { + 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_platdata *pdata; + sc_err_t ret; + + ppriv = dev_get_priv(dev); + pdata = dev_get_platdata(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_LAST) { + if (!sc_rm_is_resource_owned(-1, pdata->resource_id)) { + printf("%s not owned by curr partition\n", dev->name); + return 0; + } + ret = sc_pm_set_resource_power_mode(-1, pdata->resource_id, + SC_PM_PW_MODE_OFF); + if (ret) { + 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_platdata *pdata; + sc_err_t ret; + struct power_domain parent_pd; + + if (device_get_uclass_id(parent) == UCLASS_POWER_DOMAIN) { + pdata = + (struct imx8_power_domain_platdata *)dev_get_platdata(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_LAST) { + 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_ofdata_to_platdata(struct udevice *dev) +{ + int reg; + struct imx8_power_domain_platdata *pdata = dev_get_platdata(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, + .free = 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, + .ofdata_to_platdata = imx8_power_domain_ofdata_to_platdata, + .platdata_auto_alloc_size = sizeof(struct imx8_power_domain_platdata), + .priv_auto_alloc_size = sizeof(struct imx8_power_domain_priv), + .ops = &imx8_power_domain_ops, +}; diff --git a/drivers/power/domain/imx8-power-domain.c b/drivers/power/domain/imx8-power-domain.c deleted file mode 100644 index d51dbaa6c0..0000000000 --- a/drivers/power/domain/imx8-power-domain.c +++ /dev/null @@ -1,315 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright 2017 NXP - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -DECLARE_GLOBAL_DATA_PTR; - -struct imx8_power_domain_priv { - bool state_on; -}; - -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_platdata *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_platdata *)dev_get_platdata(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_LAST) { - 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_platdata *pdata; - sc_err_t ret; - - ppriv = dev_get_priv(dev); - pdata = dev_get_platdata(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_LAST) { - if (!sc_rm_is_resource_owned(-1, pdata->resource_id)) { - printf("%s not owned by curr partition\n", dev->name); - return 0; - } - ret = sc_pm_set_resource_power_mode(-1, pdata->resource_id, - SC_PM_PW_MODE_OFF); - if (ret) { - 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_platdata *pdata; - sc_err_t ret; - struct power_domain parent_pd; - - if (device_get_uclass_id(parent) == UCLASS_POWER_DOMAIN) { - pdata = - (struct imx8_power_domain_platdata *)dev_get_platdata(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_LAST) { - 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_ofdata_to_platdata(struct udevice *dev) -{ - int reg; - struct imx8_power_domain_platdata *pdata = dev_get_platdata(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, - .free = 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, - .ofdata_to_platdata = imx8_power_domain_ofdata_to_platdata, - .platdata_auto_alloc_size = sizeof(struct imx8_power_domain_platdata), - .priv_auto_alloc_size = sizeof(struct imx8_power_domain_priv), - .ops = &imx8_power_domain_ops, -};