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Diffstat (limited to 'target/linux/ipq806x/patches-4.4/097-1-usb-dwc3-add-generic-OF-glue-layer.patch')
-rw-r--r--target/linux/ipq806x/patches-4.4/097-1-usb-dwc3-add-generic-OF-glue-layer.patch234
1 files changed, 0 insertions, 234 deletions
diff --git a/target/linux/ipq806x/patches-4.4/097-1-usb-dwc3-add-generic-OF-glue-layer.patch b/target/linux/ipq806x/patches-4.4/097-1-usb-dwc3-add-generic-OF-glue-layer.patch
deleted file mode 100644
index 214bedc95a..0000000000
--- a/target/linux/ipq806x/patches-4.4/097-1-usb-dwc3-add-generic-OF-glue-layer.patch
+++ /dev/null
@@ -1,234 +0,0 @@
-From 41c2b5280cd2fa3e198c422cdf223ba6e48f857a Mon Sep 17 00:00:00 2001
-From: Felipe Balbi <balbi@ti.com>
-Date: Wed, 18 Nov 2015 13:15:20 -0600
-Subject: [PATCH] usb: dwc3: add generic OF glue layer
-
-For simple platforms which merely enable some clocks
-and populate its children, we can use this generic
-glue layer to avoid boilerplate code duplication.
-
-For now this supports Qcom and Xilinx, but if we
-find a way to add generic handling of regulators and
-optional PHYs, we can absorb exynos as well.
-
-Tested-by: Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@xilinx.com>
-Signed-off-by: Felipe Balbi <balbi@ti.com>
-(cherry picked from commit 16adc674d0d68a50dfc725574738d7ae11cf5d7e)
-
-Change-Id: I6fd260442997b198dc12ca726814b7a9518e6353
-Signed-off-by: Nitheesh Sekar <nsekar@codeaurora.org>
----
- drivers/usb/dwc3/Kconfig | 9 ++
- drivers/usb/dwc3/Makefile | 1 +
- drivers/usb/dwc3/dwc3-of-simple.c | 178 ++++++++++++++++++++++++++++++++++++++
- 3 files changed, 188 insertions(+)
- create mode 100644 drivers/usb/dwc3/dwc3-of-simple.c
-
---- a/drivers/usb/dwc3/Kconfig
-+++ b/drivers/usb/dwc3/Kconfig
-@@ -87,6 +87,15 @@ config USB_DWC3_KEYSTONE
- Support of USB2/3 functionality in TI Keystone2 platforms.
- Say 'Y' or 'M' here if you have one such device
-
-+config USB_DWC3_OF_SIMPLE
-+ tristate "Generic OF Simple Glue Layer"
-+ depends on OF && COMMON_CLK
-+ default USB_DWC3
-+ help
-+ Support USB2/3 functionality in simple SoC integrations.
-+ Currently supports Xilinx and Qualcomm DWC USB3 IP.
-+ Say 'Y' or 'M' if you have one such device.
-+
- config USB_DWC3_ST
- tristate "STMicroelectronics Platforms"
- depends on ARCH_STI && OF
---- a/drivers/usb/dwc3/Makefile
-+++ b/drivers/usb/dwc3/Makefile
-@@ -37,5 +37,6 @@ obj-$(CONFIG_USB_DWC3_OMAP) += dwc3-oma
- obj-$(CONFIG_USB_DWC3_EXYNOS) += dwc3-exynos.o
- obj-$(CONFIG_USB_DWC3_PCI) += dwc3-pci.o
- obj-$(CONFIG_USB_DWC3_KEYSTONE) += dwc3-keystone.o
-+obj-$(CONFIG_USB_DWC3_OF_SIMPLE) += dwc3-of-simple.o
- obj-$(CONFIG_USB_DWC3_QCOM) += dwc3-qcom.o
- obj-$(CONFIG_USB_DWC3_ST) += dwc3-st.o
---- /dev/null
-+++ b/drivers/usb/dwc3/dwc3-of-simple.c
-@@ -0,0 +1,178 @@
-+/**
-+ * dwc3-of-simple.c - OF glue layer for simple integrations
-+ *
-+ * Copyright (c) 2015 Texas Instruments Incorporated - http://www.ti.com
-+ *
-+ * Author: Felipe Balbi <balbi@ti.com>
-+ *
-+ * This program is free software: you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 of
-+ * the License as published by the Free Software Foundation.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ * This is a combination of the old dwc3-qcom.c by Ivan T. Ivanov
-+ * <iivanov@mm-sol.com> and the original patch adding support for Xilinx' SoC
-+ * by Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@xilinx.com>
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/kernel.h>
-+#include <linux/slab.h>
-+#include <linux/platform_device.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/clk.h>
-+#include <linux/clk-provider.h>
-+#include <linux/of.h>
-+#include <linux/of_platform.h>
-+#include <linux/pm_runtime.h>
-+
-+struct dwc3_of_simple {
-+ struct device *dev;
-+ struct clk **clks;
-+ int num_clocks;
-+};
-+
-+static int dwc3_of_simple_probe(struct platform_device *pdev)
-+{
-+ struct dwc3_of_simple *simple;
-+ struct device *dev = &pdev->dev;
-+ struct device_node *np = dev->of_node;
-+
-+ int ret;
-+ int i;
-+
-+ simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL);
-+ if (!simple)
-+ return -ENOMEM;
-+
-+ ret = of_clk_get_parent_count(np);
-+ if (ret < 0)
-+ return ret;
-+
-+ simple->num_clocks = ret;
-+
-+ simple->clks = devm_kcalloc(dev, simple->num_clocks,
-+ sizeof(struct clk *), GFP_KERNEL);
-+ if (!simple->clks)
-+ return -ENOMEM;
-+
-+ simple->dev = dev;
-+
-+ for (i = 0; i < simple->num_clocks; i++) {
-+ struct clk *clk;
-+
-+ clk = of_clk_get(np, i);
-+ if (IS_ERR(clk)) {
-+ while (--i >= 0)
-+ clk_put(simple->clks[i]);
-+ return PTR_ERR(clk);
-+ }
-+
-+ ret = clk_prepare_enable(clk);
-+ if (ret < 0) {
-+ while (--i >= 0) {
-+ clk_disable_unprepare(simple->clks[i]);
-+ clk_put(simple->clks[i]);
-+ }
-+ clk_put(clk);
-+
-+ return ret;
-+ }
-+
-+ simple->clks[i] = clk;
-+ }
-+
-+ ret = of_platform_populate(np, NULL, NULL, dev);
-+ if (ret) {
-+ for (i = 0; i < simple->num_clocks; i++) {
-+ clk_disable_unprepare(simple->clks[i]);
-+ clk_put(simple->clks[i]);
-+ }
-+
-+ return ret;
-+ }
-+
-+ pm_runtime_set_active(dev);
-+ pm_runtime_enable(dev);
-+ pm_runtime_get_sync(dev);
-+
-+ return 0;
-+}
-+
-+static int dwc3_of_simple_remove(struct platform_device *pdev)
-+{
-+ struct dwc3_of_simple *simple = platform_get_drvdata(pdev);
-+ struct device *dev = &pdev->dev;
-+ int i;
-+
-+ for (i = 0; i < simple->num_clocks; i++) {
-+ clk_unprepare(simple->clks[i]);
-+ clk_put(simple->clks[i]);
-+ }
-+
-+ of_platform_depopulate(dev);
-+
-+ pm_runtime_put_sync(dev);
-+ pm_runtime_disable(dev);
-+
-+ return 0;
-+}
-+
-+static int dwc3_of_simple_runtime_suspend(struct device *dev)
-+{
-+ struct dwc3_of_simple *simple = dev_get_drvdata(dev);
-+ int i;
-+
-+ for (i = 0; i < simple->num_clocks; i++)
-+ clk_disable(simple->clks[i]);
-+
-+ return 0;
-+}
-+
-+static int dwc3_of_simple_runtime_resume(struct device *dev)
-+{
-+ struct dwc3_of_simple *simple = dev_get_drvdata(dev);
-+ int ret;
-+ int i;
-+
-+ for (i = 0; i < simple->num_clocks; i++) {
-+ ret = clk_enable(simple->clks[i]);
-+ if (ret < 0) {
-+ while (--i >= 0)
-+ clk_disable(simple->clks[i]);
-+ return ret;
-+ }
-+ }
-+
-+ return 0;
-+}
-+
-+static const struct dev_pm_ops dwc3_of_simple_dev_pm_ops = {
-+ SET_RUNTIME_PM_OPS(dwc3_of_simple_runtime_suspend,
-+ dwc3_of_simple_runtime_resume, NULL)
-+};
-+
-+static const struct of_device_id of_dwc3_simple_match[] = {
-+ { .compatible = "qcom,dwc3" },
-+ { .compatible = "xlnx,zynqmp-dwc3" },
-+ { /* Sentinel */ }
-+};
-+MODULE_DEVICE_TABLE(of, of_dwc3_simple_match);
-+
-+static struct platform_driver dwc3_of_simple_driver = {
-+ .probe = dwc3_of_simple_probe,
-+ .remove = dwc3_of_simple_remove,
-+ .driver = {
-+ .name = "dwc3-of-simple",
-+ .of_match_table = of_dwc3_simple_match,
-+ },
-+};
-+
-+module_platform_driver(dwc3_of_simple_driver);
-+MODULE_LICENSE("GPL v2");
-+MODULE_DESCRIPTION("DesignWare USB3 OF Simple Glue Layer");
-+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-27 05:20:15 +0000