From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/usb/host/ohci-exynos.c | 30 ++++++++++++++++++++++++++++--
1 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/kernel/drivers/usb/host/ohci-exynos.c b/kernel/drivers/usb/host/ohci-exynos.c
index a4a88b6..5f5e8a6 100644
--- a/kernel/drivers/usb/host/ohci-exynos.c
+++ b/kernel/drivers/usb/host/ohci-exynos.c
@@ -19,7 +19,7 @@
#include "ohci.h"
-#define DRIVER_DESC "OHCI EXYNOS driver"
+#define DRIVER_DESC "OHCI Exynos driver"
static const char hcd_name[] = "ohci-exynos";
static struct hc_driver __read_mostly exynos_ohci_hc_driver;
@@ -30,7 +30,9 @@
struct exynos_ohci_hcd {
struct clk *clk;
+ struct device_node *of_node;
struct phy *phy[PHY_NUMBER];
+ bool legacy_phy;
};
static int exynos_ohci_get_phy(struct device *dev,
@@ -38,10 +40,22 @@
{
struct device_node *child;
struct phy *phy;
- int phy_number;
+ int phy_number, num_phys;
int ret;
/* Get PHYs for the controller */
+ num_phys = of_count_phandle_with_args(dev->of_node, "phys",
+ "#phy-cells");
+ for (phy_number = 0; phy_number < num_phys; phy_number++) {
+ phy = devm_of_phy_get_by_index(dev, dev->of_node, phy_number);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+ exynos_ohci->phy[phy_number] = phy;
+ }
+ if (num_phys > 0)
+ return 0;
+
+ /* Get PHYs using legacy bindings */
for_each_available_child_of_node(dev->of_node, child) {
ret = of_property_read_u32(child, "reg", &phy_number);
if (ret) {
@@ -72,6 +86,7 @@
}
}
+ exynos_ohci->legacy_phy = true;
return 0;
}
@@ -169,6 +184,14 @@
goto fail_io;
}
+ /*
+ * Workaround: reset of_node pointer to avoid conflict between legacy
+ * Exynos OHCI port subnodes and generic USB device bindings
+ */
+ exynos_ohci->of_node = pdev->dev.of_node;
+ if (exynos_ohci->legacy_phy)
+ pdev->dev.of_node = NULL;
+
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err) {
dev_err(&pdev->dev, "Failed to add USB HCD\n");
@@ -179,6 +202,7 @@
fail_add_hcd:
exynos_ohci_phy_disable(&pdev->dev);
+ pdev->dev.of_node = exynos_ohci->of_node;
fail_io:
clk_disable_unprepare(exynos_ohci->clk);
fail_clk:
@@ -191,6 +215,8 @@
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd);
+ pdev->dev.of_node = exynos_ohci->of_node;
+
usb_remove_hcd(hcd);
exynos_ohci_phy_disable(&pdev->dev);
--
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