From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/usb/host/ohci-da8xx.c | 128 ++++++++++++++++++++----------------------
1 files changed, 60 insertions(+), 68 deletions(-)
diff --git a/kernel/drivers/usb/host/ohci-da8xx.c b/kernel/drivers/usb/host/ohci-da8xx.c
index a55cbba..1371b0c 100644
--- a/kernel/drivers/usb/host/ohci-da8xx.c
+++ b/kernel/drivers/usb/host/ohci-da8xx.c
@@ -9,6 +9,7 @@
*/
#include <linux/clk.h>
+#include <linux/gpio/consumer.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/jiffies.h>
@@ -39,7 +40,7 @@
struct phy *usb11_phy;
struct regulator *vbus_reg;
struct notifier_block nb;
- unsigned int reg_enabled;
+ struct gpio_desc *oc_gpio;
};
#define to_da8xx_ohci(hcd) (struct da8xx_ohci_hcd *)(hcd_to_ohci(hcd)->priv)
@@ -86,31 +87,24 @@
static int ohci_da8xx_set_power(struct usb_hcd *hcd, int on)
{
struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
- struct device *dev = hcd->self.controller;
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
+ struct device *dev = hcd->self.controller;
int ret;
-
- if (hub && hub->set_power)
- return hub->set_power(1, on);
if (!da8xx_ohci->vbus_reg)
return 0;
- if (on && !da8xx_ohci->reg_enabled) {
+ if (on) {
ret = regulator_enable(da8xx_ohci->vbus_reg);
if (ret) {
dev_err(dev, "Failed to enable regulator: %d\n", ret);
return ret;
}
- da8xx_ohci->reg_enabled = 1;
-
- } else if (!on && da8xx_ohci->reg_enabled) {
+ } else {
ret = regulator_disable(da8xx_ohci->vbus_reg);
if (ret) {
dev_err(dev, "Failed to disable regulator: %d\n", ret);
return ret;
}
- da8xx_ohci->reg_enabled = 0;
}
return 0;
@@ -119,11 +113,6 @@
static int ohci_da8xx_get_power(struct usb_hcd *hcd)
{
struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
- struct device *dev = hcd->self.controller;
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
-
- if (hub && hub->get_power)
- return hub->get_power(1);
if (da8xx_ohci->vbus_reg)
return regulator_is_enabled(da8xx_ohci->vbus_reg);
@@ -134,13 +123,11 @@
static int ohci_da8xx_get_oci(struct usb_hcd *hcd)
{
struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
- struct device *dev = hcd->self.controller;
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
unsigned int flags;
int ret;
- if (hub && hub->get_oci)
- return hub->get_oci(1);
+ if (da8xx_ohci->oc_gpio)
+ return gpiod_get_value_cansleep(da8xx_ohci->oc_gpio);
if (!da8xx_ohci->vbus_reg)
return 0;
@@ -158,11 +145,6 @@
static int ohci_da8xx_has_set_power(struct usb_hcd *hcd)
{
struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
- struct device *dev = hcd->self.controller;
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
-
- if (hub && hub->set_power)
- return 1;
if (da8xx_ohci->vbus_reg)
return 1;
@@ -173,10 +155,8 @@
static int ohci_da8xx_has_oci(struct usb_hcd *hcd)
{
struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
- struct device *dev = hcd->self.controller;
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
- if (hub && hub->get_oci)
+ if (da8xx_ohci->oc_gpio)
return 1;
if (da8xx_ohci->vbus_reg)
@@ -196,19 +176,6 @@
return 0;
}
-/*
- * Handle the port over-current indicator change.
- */
-static void ohci_da8xx_ocic_handler(struct da8xx_ohci_root_hub *hub,
- unsigned port)
-{
- ocic_mask |= 1 << port;
-
- /* Once over-current is detected, the port needs to be powered down */
- if (hub->get_oci(port) > 0)
- hub->set_power(port, 0);
-}
-
static int ohci_da8xx_regulator_event(struct notifier_block *nb,
unsigned long event, void *data)
{
@@ -223,16 +190,29 @@
return 0;
}
+static irqreturn_t ohci_da8xx_oc_thread(int irq, void *data)
+{
+ struct da8xx_ohci_hcd *da8xx_ohci = data;
+ struct device *dev = da8xx_ohci->hcd->self.controller;
+ int ret;
+
+ if (gpiod_get_value_cansleep(da8xx_ohci->oc_gpio) &&
+ da8xx_ohci->vbus_reg) {
+ ret = regulator_disable(da8xx_ohci->vbus_reg);
+ if (ret)
+ dev_err(dev, "Failed to disable regulator: %d\n", ret);
+ }
+
+ return IRQ_HANDLED;
+}
+
static int ohci_da8xx_register_notify(struct usb_hcd *hcd)
{
struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd);
struct device *dev = hcd->self.controller;
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
int ret = 0;
- if (hub && hub->ocic_notify) {
- ret = hub->ocic_notify(ohci_da8xx_ocic_handler);
- } else if (da8xx_ohci->vbus_reg) {
+ if (!da8xx_ohci->oc_gpio && da8xx_ohci->vbus_reg) {
da8xx_ohci->nb.notifier_call = ohci_da8xx_regulator_event;
ret = devm_regulator_register_notifier(da8xx_ohci->vbus_reg,
&da8xx_ohci->nb);
@@ -242,15 +222,6 @@
dev_err(dev, "Failed to register notifier: %d\n", ret);
return ret;
-}
-
-static void ohci_da8xx_unregister_notify(struct usb_hcd *hcd)
-{
- struct device *dev = hcd->self.controller;
- struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev);
-
- if (hub && hub->ocic_notify)
- hub->ocic_notify(NULL);
}
static int ohci_da8xx_reset(struct usb_hcd *hcd)
@@ -402,34 +373,35 @@
static int ohci_da8xx_probe(struct platform_device *pdev)
{
struct da8xx_ohci_hcd *da8xx_ohci;
+ struct device *dev = &pdev->dev;
+ int error, hcd_irq, oc_irq;
struct usb_hcd *hcd;
struct resource *mem;
- int error, irq;
- hcd = usb_create_hcd(&ohci_da8xx_hc_driver, &pdev->dev,
- dev_name(&pdev->dev));
+
+ hcd = usb_create_hcd(&ohci_da8xx_hc_driver, dev, dev_name(dev));
if (!hcd)
return -ENOMEM;
da8xx_ohci = to_da8xx_ohci(hcd);
da8xx_ohci->hcd = hcd;
- da8xx_ohci->usb11_clk = devm_clk_get(&pdev->dev, NULL);
+ da8xx_ohci->usb11_clk = devm_clk_get(dev, NULL);
if (IS_ERR(da8xx_ohci->usb11_clk)) {
error = PTR_ERR(da8xx_ohci->usb11_clk);
if (error != -EPROBE_DEFER)
- dev_err(&pdev->dev, "Failed to get clock.\n");
+ dev_err(dev, "Failed to get clock.\n");
goto err;
}
- da8xx_ohci->usb11_phy = devm_phy_get(&pdev->dev, "usb-phy");
+ da8xx_ohci->usb11_phy = devm_phy_get(dev, "usb-phy");
if (IS_ERR(da8xx_ohci->usb11_phy)) {
error = PTR_ERR(da8xx_ohci->usb11_phy);
if (error != -EPROBE_DEFER)
- dev_err(&pdev->dev, "Failed to get phy.\n");
+ dev_err(dev, "Failed to get phy.\n");
goto err;
}
- da8xx_ohci->vbus_reg = devm_regulator_get_optional(&pdev->dev, "vbus");
+ da8xx_ohci->vbus_reg = devm_regulator_get_optional(dev, "vbus");
if (IS_ERR(da8xx_ohci->vbus_reg)) {
error = PTR_ERR(da8xx_ohci->vbus_reg);
if (error == -ENODEV) {
@@ -437,13 +409,34 @@
} else if (error == -EPROBE_DEFER) {
goto err;
} else {
- dev_err(&pdev->dev, "Failed to get regulator\n");
+ dev_err(dev, "Failed to get regulator\n");
goto err;
}
}
+ da8xx_ohci->oc_gpio = devm_gpiod_get_optional(dev, "oc", GPIOD_IN);
+ if (IS_ERR(da8xx_ohci->oc_gpio)) {
+ error = PTR_ERR(da8xx_ohci->oc_gpio);
+ goto err;
+ }
+
+ if (da8xx_ohci->oc_gpio) {
+ oc_irq = gpiod_to_irq(da8xx_ohci->oc_gpio);
+ if (oc_irq < 0) {
+ error = oc_irq;
+ goto err;
+ }
+
+ error = devm_request_threaded_irq(dev, oc_irq, NULL,
+ ohci_da8xx_oc_thread, IRQF_TRIGGER_RISING |
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ "OHCI over-current indicator", da8xx_ohci);
+ if (error)
+ goto err;
+ }
+
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- hcd->regs = devm_ioremap_resource(&pdev->dev, mem);
+ hcd->regs = devm_ioremap_resource(dev, mem);
if (IS_ERR(hcd->regs)) {
error = PTR_ERR(hcd->regs);
goto err;
@@ -451,13 +444,13 @@
hcd->rsrc_start = mem->start;
hcd->rsrc_len = resource_size(mem);
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
+ hcd_irq = platform_get_irq(pdev, 0);
+ if (hcd_irq < 0) {
error = -ENODEV;
goto err;
}
- error = usb_add_hcd(hcd, irq, 0);
+ error = usb_add_hcd(hcd, hcd_irq, 0);
if (error)
goto err;
@@ -480,7 +473,6 @@
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
- ohci_da8xx_unregister_notify(hcd);
usb_remove_hcd(hcd);
usb_put_hcd(hcd);
--
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