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Diffstat (limited to 'target/linux/bcm4908/patches-5.4/084-v5.6-0004-phy-usb-Add-wake-on-functionality.patch')
-rw-r--r--target/linux/bcm4908/patches-5.4/084-v5.6-0004-phy-usb-Add-wake-on-functionality.patch205
1 files changed, 0 insertions, 205 deletions
diff --git a/target/linux/bcm4908/patches-5.4/084-v5.6-0004-phy-usb-Add-wake-on-functionality.patch b/target/linux/bcm4908/patches-5.4/084-v5.6-0004-phy-usb-Add-wake-on-functionality.patch
deleted file mode 100644
index d52edfef77..0000000000
--- a/target/linux/bcm4908/patches-5.4/084-v5.6-0004-phy-usb-Add-wake-on-functionality.patch
+++ /dev/null
@@ -1,205 +0,0 @@
-From f1c0db40a3ade1f1a39e5794d728f2953d817322 Mon Sep 17 00:00:00 2001
-From: Al Cooper <alcooperx@gmail.com>
-Date: Fri, 3 Jan 2020 13:18:02 -0500
-Subject: [PATCH] phy: usb: Add "wake on" functionality
-
-Add the ability to handle USB wake events from USB devices when
-in S2 mode. Typically there is some additional configuration
-needed to tell the USB device to generate the wake event when
-suspended but this varies with the different USB device classes.
-For example, on USB Ethernet dongles, ethtool should be used to
-enable the magic packet wake functionality in the dongle.
-NOTE: This requires that the "power/wakeup" sysfs entry for
-the USB device generating the wakeup be set to "enabled".
-
-This functionality requires a special hardware sideband path that
-will trigger the AON_PM_L2 interrupt needed to wake the system from
-S2 even though the USB host controllers are in IDDQ (low power state)
-and most USB related clocks are shut off. For the sideband signaling
-to work we need to leave the usbx_freerun clock running, but this
-clock consumes very little power by design. There's a bug in the
-XHCI wake hardware so only EHCI/OHCI wake is currently supported.
-
-Signed-off-by: Al Cooper <alcooperx@gmail.com>
-Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
----
- drivers/phy/broadcom/phy-brcm-usb-init.c | 17 +++++++++
- drivers/phy/broadcom/phy-brcm-usb-init.h | 1 +
- drivers/phy/broadcom/phy-brcm-usb.c | 48 ++++++++++++++++++++++--
- 3 files changed, 63 insertions(+), 3 deletions(-)
-
---- a/drivers/phy/broadcom/phy-brcm-usb-init.c
-+++ b/drivers/phy/broadcom/phy-brcm-usb-init.c
-@@ -58,6 +58,8 @@
- #define USB_CTRL_USB_PM_SOFT_RESET_MASK 0x40000000 /* option */
- #define USB_CTRL_USB_PM_USB20_HC_RESETB_MASK 0x30000000 /* option */
- #define USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK 0x00300000 /* option */
-+#define USB_CTRL_USB_PM_RMTWKUP_EN_MASK 0x00000001
-+#define USB_CTRL_USB_PM_STATUS 0x38
- #define USB_CTRL_USB30_CTL1 0x60
- #define USB_CTRL_USB30_CTL1_PHY3_PLL_SEQ_START_MASK 0x00000010
- #define USB_CTRL_USB30_CTL1_PHY3_RESETB_MASK 0x00010000
-@@ -855,6 +857,10 @@ void brcm_usb_init_common(struct brcm_us
- u32 reg;
- void __iomem *ctrl = params->ctrl_regs;
-
-+ /* Clear any pending wake conditions */
-+ reg = brcmusb_readl(USB_CTRL_REG(ctrl, USB_PM_STATUS));
-+ brcmusb_writel(reg, USB_CTRL_REG(ctrl, USB_PM_STATUS));
-+
- /* Take USB out of power down */
- if (USB_CTRL_MASK_FAMILY(params, PLL_CTL, PLL_IDDQ_PWRDN)) {
- USB_CTRL_UNSET_FAMILY(params, PLL_CTL, PLL_IDDQ_PWRDN);
-@@ -1010,6 +1016,17 @@ void brcm_usb_uninit_xhci(struct brcm_us
- USB_CTRL_SET(params->ctrl_regs, USB30_PCTL, PHY3_IDDQ_OVERRIDE);
- }
-
-+void brcm_usb_wake_enable(struct brcm_usb_init_params *params,
-+ int enable)
-+{
-+ void __iomem *ctrl = params->ctrl_regs;
-+
-+ if (enable)
-+ USB_CTRL_SET(ctrl, USB_PM, RMTWKUP_EN);
-+ else
-+ USB_CTRL_UNSET(ctrl, USB_PM, RMTWKUP_EN);
-+}
-+
- void brcm_usb_set_family_map(struct brcm_usb_init_params *params)
- {
- int fam;
---- a/drivers/phy/broadcom/phy-brcm-usb-init.h
-+++ b/drivers/phy/broadcom/phy-brcm-usb-init.h
-@@ -38,5 +38,6 @@ void brcm_usb_init_xhci(struct brcm_usb_
- void brcm_usb_uninit_common(struct brcm_usb_init_params *ini);
- void brcm_usb_uninit_eohci(struct brcm_usb_init_params *ini);
- void brcm_usb_uninit_xhci(struct brcm_usb_init_params *ini);
-+void brcm_usb_wake_enable(struct brcm_usb_init_params *params, int enable);
-
- #endif /* _USB_BRCM_COMMON_INIT_H */
---- a/drivers/phy/broadcom/phy-brcm-usb.c
-+++ b/drivers/phy/broadcom/phy-brcm-usb.c
-@@ -57,11 +57,22 @@ struct brcm_usb_phy_data {
- bool has_xhci;
- struct clk *usb_20_clk;
- struct clk *usb_30_clk;
-+ struct clk *suspend_clk;
- struct mutex mutex; /* serialize phy init */
- int init_count;
-+ int wake_irq;
- struct brcm_usb_phy phys[BRCM_USB_PHY_ID_MAX];
- };
-
-+static irqreturn_t brcm_usb_phy_wake_isr(int irq, void *dev_id)
-+{
-+ struct phy *gphy = dev_id;
-+
-+ pm_wakeup_event(&gphy->dev, 0);
-+
-+ return IRQ_HANDLED;
-+}
-+
- static int brcm_usb_phy_init(struct phy *gphy)
- {
- struct brcm_usb_phy *phy = phy_get_drvdata(gphy);
-@@ -76,6 +87,7 @@ static int brcm_usb_phy_init(struct phy
- if (priv->init_count++ == 0) {
- clk_prepare_enable(priv->usb_20_clk);
- clk_prepare_enable(priv->usb_30_clk);
-+ clk_prepare_enable(priv->suspend_clk);
- brcm_usb_init_common(&priv->ini);
- }
- mutex_unlock(&priv->mutex);
-@@ -108,6 +120,7 @@ static int brcm_usb_phy_exit(struct phy
- brcm_usb_uninit_common(&priv->ini);
- clk_disable_unprepare(priv->usb_20_clk);
- clk_disable_unprepare(priv->usb_30_clk);
-+ clk_disable_unprepare(priv->suspend_clk);
- }
- mutex_unlock(&priv->mutex);
- phy->inited = false;
-@@ -228,11 +241,12 @@ static const struct attribute_group brcm
- .attrs = brcm_usb_phy_attrs,
- };
-
--static int brcm_usb_phy_dvr_init(struct device *dev,
-+static int brcm_usb_phy_dvr_init(struct platform_device *pdev,
- struct brcm_usb_phy_data *priv,
- struct device_node *dn)
- {
-- struct phy *gphy;
-+ struct device *dev = &pdev->dev;
-+ struct phy *gphy = NULL;
- int err;
-
- priv->usb_20_clk = of_clk_get_by_name(dn, "sw_usb");
-@@ -275,6 +289,28 @@ static int brcm_usb_phy_dvr_init(struct
- if (err)
- return err;
- }
-+
-+ priv->suspend_clk = clk_get(dev, "usb0_freerun");
-+ if (IS_ERR(priv->suspend_clk)) {
-+ dev_err(dev, "Suspend Clock not found in Device Tree\n");
-+ priv->suspend_clk = NULL;
-+ }
-+
-+ priv->wake_irq = platform_get_irq_byname(pdev, "wake");
-+ if (priv->wake_irq < 0)
-+ priv->wake_irq = platform_get_irq_byname(pdev, "wakeup");
-+ if (priv->wake_irq >= 0) {
-+ err = devm_request_irq(dev, priv->wake_irq,
-+ brcm_usb_phy_wake_isr, 0,
-+ dev_name(dev), gphy);
-+ if (err < 0)
-+ return err;
-+ device_set_wakeup_capable(dev, 1);
-+ } else {
-+ dev_info(dev,
-+ "Wake interrupt missing, system wake not supported\n");
-+ }
-+
- return 0;
- }
-
-@@ -335,7 +371,7 @@ static int brcm_usb_phy_probe(struct pla
- if (of_property_read_bool(dn, "brcm,has-eohci"))
- priv->has_eohci = true;
-
-- err = brcm_usb_phy_dvr_init(dev, priv, dn);
-+ err = brcm_usb_phy_dvr_init(pdev, priv, dn);
- if (err)
- return err;
-
-@@ -386,10 +422,13 @@ static int brcm_usb_phy_suspend(struct d
- if (priv->phys[BRCM_USB_PHY_2_0].inited)
- brcm_usb_uninit_eohci(&priv->ini);
- brcm_usb_uninit_common(&priv->ini);
-+ brcm_usb_wake_enable(&priv->ini, true);
- if (priv->phys[BRCM_USB_PHY_3_0].inited)
- clk_disable_unprepare(priv->usb_30_clk);
- if (priv->phys[BRCM_USB_PHY_2_0].inited)
- clk_disable_unprepare(priv->usb_20_clk);
-+ if (priv->wake_irq >= 0)
-+ enable_irq_wake(priv->wake_irq);
- }
- return 0;
- }
-@@ -400,6 +439,7 @@ static int brcm_usb_phy_resume(struct de
-
- clk_prepare_enable(priv->usb_20_clk);
- clk_prepare_enable(priv->usb_30_clk);
-+ brcm_usb_wake_enable(&priv->ini, false);
- brcm_usb_init_ipp(&priv->ini);
-
- /*
-@@ -407,6 +447,8 @@ static int brcm_usb_phy_resume(struct de
- * Uninitialize anything that wasn't previously initialized.
- */
- if (priv->init_count) {
-+ if (priv->wake_irq >= 0)
-+ disable_irq_wake(priv->wake_irq);
- brcm_usb_init_common(&priv->ini);
- if (priv->phys[BRCM_USB_PHY_2_0].inited) {
- brcm_usb_init_eohci(&priv->ini);
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-25 02:21:03 +0000