diff options
Diffstat (limited to 'drivers/soc/bcm/bcm63xx/bcm63xx-power.c')
-rw-r--r-- | drivers/soc/bcm/bcm63xx/bcm63xx-power.c | 376 |
1 files changed, 0 insertions, 376 deletions
diff --git a/drivers/soc/bcm/bcm63xx/bcm63xx-power.c b/drivers/soc/bcm/bcm63xx/bcm63xx-power.c deleted file mode 100644 index aa72e13d5d0e..000000000000 --- a/drivers/soc/bcm/bcm63xx/bcm63xx-power.c +++ /dev/null @@ -1,376 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * BCM63xx Power Domain Controller Driver - * - * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com> - */ - -#include <dt-bindings/soc/bcm6318-pm.h> -#include <dt-bindings/soc/bcm6328-pm.h> -#include <dt-bindings/soc/bcm6362-pm.h> -#include <dt-bindings/soc/bcm63268-pm.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/pm_domain.h> -#include <linux/of.h> -#include <linux/of_device.h> - -struct bcm63xx_power_dev { - struct generic_pm_domain genpd; - struct bcm63xx_power *power; - uint32_t mask; -}; - -struct bcm63xx_power { - void __iomem *base; - spinlock_t lock; - struct bcm63xx_power_dev *dev; - struct genpd_onecell_data genpd_data; - struct generic_pm_domain **genpd; -}; - -struct bcm63xx_power_data { - const char * const name; - uint8_t bit; - unsigned int flags; -}; - -static int bcm63xx_power_get_state(struct bcm63xx_power_dev *pmd, bool *is_on) -{ - struct bcm63xx_power *power = pmd->power; - - if (!pmd->mask) { - *is_on = false; - return -EINVAL; - } - - *is_on = !(__raw_readl(power->base) & pmd->mask); - - return 0; -} - -static int bcm63xx_power_set_state(struct bcm63xx_power_dev *pmd, bool on) -{ - struct bcm63xx_power *power = pmd->power; - unsigned long flags; - uint32_t val; - - if (!pmd->mask) - return -EINVAL; - - spin_lock_irqsave(&power->lock, flags); - val = __raw_readl(power->base); - if (on) - val &= ~pmd->mask; - else - val |= pmd->mask; - __raw_writel(val, power->base); - spin_unlock_irqrestore(&power->lock, flags); - - return 0; -} - -static int bcm63xx_power_on(struct generic_pm_domain *genpd) -{ - struct bcm63xx_power_dev *pmd = container_of(genpd, - struct bcm63xx_power_dev, genpd); - - return bcm63xx_power_set_state(pmd, true); -} - -static int bcm63xx_power_off(struct generic_pm_domain *genpd) -{ - struct bcm63xx_power_dev *pmd = container_of(genpd, - struct bcm63xx_power_dev, genpd); - - return bcm63xx_power_set_state(pmd, false); -} - -static int bcm63xx_power_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; - const struct bcm63xx_power_data *entry, *table; - struct bcm63xx_power *power; - unsigned int ndom; - uint8_t max_bit = 0; - int ret; - - power = devm_kzalloc(dev, sizeof(*power), GFP_KERNEL); - if (!power) - return -ENOMEM; - - power->base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(power->base)) - return PTR_ERR(power->base); - - table = of_device_get_match_data(dev); - if (!table) - return -EINVAL; - - power->genpd_data.num_domains = 0; - ndom = 0; - for (entry = table; entry->name; entry++) { - max_bit = max(max_bit, entry->bit); - ndom++; - } - - if (!ndom) - return -ENODEV; - - power->genpd_data.num_domains = max_bit + 1; - - power->dev = devm_kcalloc(dev, power->genpd_data.num_domains, - sizeof(struct bcm63xx_power_dev), - GFP_KERNEL); - if (!power->dev) - return -ENOMEM; - - power->genpd = devm_kcalloc(dev, power->genpd_data.num_domains, - sizeof(struct generic_pm_domain *), - GFP_KERNEL); - if (!power->genpd) - return -ENOMEM; - - power->genpd_data.domains = power->genpd; - - ndom = 0; - for (entry = table; entry->name; entry++) { - struct bcm63xx_power_dev *pmd = &power->dev[ndom]; - bool is_on; - - pmd->power = power; - pmd->mask = BIT(entry->bit); - pmd->genpd.name = entry->name; - pmd->genpd.flags = entry->flags; - - ret = bcm63xx_power_get_state(pmd, &is_on); - if (ret) - dev_warn(dev, "unable to get current state for %s\n", - pmd->genpd.name); - - pmd->genpd.power_on = bcm63xx_power_on; - pmd->genpd.power_off = bcm63xx_power_off; - - pm_genpd_init(&pmd->genpd, NULL, !is_on); - power->genpd[entry->bit] = &pmd->genpd; - - ndom++; - } - - spin_lock_init(&power->lock); - - ret = of_genpd_add_provider_onecell(np, &power->genpd_data); - if (ret) { - dev_err(dev, "failed to register genpd driver: %d\n", ret); - return ret; - } - - dev_info(dev, "registered %u power domains\n", ndom); - - return 0; -} - -static const struct bcm63xx_power_data bcm6318_power_domains[] = { - { - .name = "pcie", - .bit = BCM6318_POWER_DOMAIN_PCIE, - }, { - .name = "usb", - .bit = BCM6318_POWER_DOMAIN_USB, - }, { - .name = "ephy0", - .bit = BCM6318_POWER_DOMAIN_EPHY0, - }, { - .name = "ephy1", - .bit = BCM6318_POWER_DOMAIN_EPHY1, - }, { - .name = "ephy2", - .bit = BCM6318_POWER_DOMAIN_EPHY2, - }, { - .name = "ephy3", - .bit = BCM6318_POWER_DOMAIN_EPHY3, - }, { - .name = "ldo2p5", - .bit = BCM6318_POWER_DOMAIN_LDO2P5, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "ldo2p9", - .bit = BCM6318_POWER_DOMAIN_LDO2P9, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "sw1p0", - .bit = BCM6318_POWER_DOMAIN_SW1P0, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "pad", - .bit = BCM6318_POWER_DOMAIN_PAD, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - /* sentinel */ - }, -}; - -static const struct bcm63xx_power_data bcm6328_power_domains[] = { - { - .name = "adsl2-mips", - .bit = BCM6328_POWER_DOMAIN_ADSL2_MIPS, - }, { - .name = "adsl2-phy", - .bit = BCM6328_POWER_DOMAIN_ADSL2_PHY, - }, { - .name = "adsl2-afe", - .bit = BCM6328_POWER_DOMAIN_ADSL2_AFE, - }, { - .name = "sar", - .bit = BCM6328_POWER_DOMAIN_SAR, - }, { - .name = "pcm", - .bit = BCM6328_POWER_DOMAIN_PCM, - }, { - .name = "usbd", - .bit = BCM6328_POWER_DOMAIN_USBD, - }, { - .name = "usbh", - .bit = BCM6328_POWER_DOMAIN_USBH, - }, { - .name = "pcie", - .bit = BCM6328_POWER_DOMAIN_PCIE, - }, { - .name = "robosw", - .bit = BCM6328_POWER_DOMAIN_ROBOSW, - }, { - .name = "ephy", - .bit = BCM6328_POWER_DOMAIN_EPHY, - }, { - /* sentinel */ - }, -}; - -static const struct bcm63xx_power_data bcm6362_power_domains[] = { - { - .name = "sar", - .bit = BCM6362_POWER_DOMAIN_SAR, - }, { - .name = "ipsec", - .bit = BCM6362_POWER_DOMAIN_IPSEC, - }, { - .name = "mips", - .bit = BCM6362_POWER_DOMAIN_MIPS, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "dect", - .bit = BCM6362_POWER_DOMAIN_DECT, - }, { - .name = "usbh", - .bit = BCM6362_POWER_DOMAIN_USBH, - }, { - .name = "usbd", - .bit = BCM6362_POWER_DOMAIN_USBD, - }, { - .name = "robosw", - .bit = BCM6362_POWER_DOMAIN_ROBOSW, - }, { - .name = "pcm", - .bit = BCM6362_POWER_DOMAIN_PCM, - }, { - .name = "periph", - .bit = BCM6362_POWER_DOMAIN_PERIPH, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "adsl-phy", - .bit = BCM6362_POWER_DOMAIN_ADSL_PHY, - }, { - .name = "gmii-pads", - .bit = BCM6362_POWER_DOMAIN_GMII_PADS, - }, { - .name = "fap", - .bit = BCM6362_POWER_DOMAIN_FAP, - }, { - .name = "pcie", - .bit = BCM6362_POWER_DOMAIN_PCIE, - }, { - .name = "wlan-pads", - .bit = BCM6362_POWER_DOMAIN_WLAN_PADS, - }, { - /* sentinel */ - }, -}; - -static const struct bcm63xx_power_data bcm63268_power_domains[] = { - { - .name = "sar", - .bit = BCM63268_POWER_DOMAIN_SAR, - }, { - .name = "ipsec", - .bit = BCM63268_POWER_DOMAIN_IPSEC, - }, { - .name = "mips", - .bit = BCM63268_POWER_DOMAIN_MIPS, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "dect", - .bit = BCM63268_POWER_DOMAIN_DECT, - }, { - .name = "usbh", - .bit = BCM63268_POWER_DOMAIN_USBH, - }, { - .name = "usbd", - .bit = BCM63268_POWER_DOMAIN_USBD, - }, { - .name = "robosw", - .bit = BCM63268_POWER_DOMAIN_ROBOSW, - }, { - .name = "pcm", - .bit = BCM63268_POWER_DOMAIN_PCM, - }, { - .name = "periph", - .bit = BCM63268_POWER_DOMAIN_PERIPH, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "vdsl-phy", - .bit = BCM63268_POWER_DOMAIN_VDSL_PHY, - }, { - .name = "vdsl-mips", - .bit = BCM63268_POWER_DOMAIN_VDSL_MIPS, - }, { - .name = "fap", - .bit = BCM63268_POWER_DOMAIN_FAP, - }, { - .name = "pcie", - .bit = BCM63268_POWER_DOMAIN_PCIE, - }, { - .name = "wlan-pads", - .bit = BCM63268_POWER_DOMAIN_WLAN_PADS, - }, { - /* sentinel */ - }, -}; - -static const struct of_device_id bcm63xx_power_of_match[] = { - { - .compatible = "brcm,bcm6318-power-controller", - .data = &bcm6318_power_domains, - }, { - .compatible = "brcm,bcm6328-power-controller", - .data = &bcm6328_power_domains, - }, { - .compatible = "brcm,bcm6362-power-controller", - .data = &bcm6362_power_domains, - }, { - .compatible = "brcm,bcm63268-power-controller", - .data = &bcm63268_power_domains, - }, { - /* sentinel */ - } -}; - -static struct platform_driver bcm63xx_power_driver = { - .driver = { - .name = "bcm63xx-power-controller", - .of_match_table = bcm63xx_power_of_match, - }, - .probe = bcm63xx_power_probe, -}; -builtin_platform_driver(bcm63xx_power_driver); |