/** * dwc3-of-simple.c - OF glue layer for simple integrations * * Copyright (c) 2015 Texas Instruments Incorporated - http://www.ti.com * * Author: Felipe Balbi * * 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 * and the original patch adding support for Xilinx' SoC * by Subbaraya Sundeep Bhatta */ #include #include #include #include #include #include #include #include #include #include struct dwc3_of_simple { struct device *dev; struct clk **clks; int num_clocks; }; static int dwc3_of_simple_clk_init(struct dwc3_of_simple *simple, int count) { struct device *dev = simple->dev; struct device_node *np = dev->of_node; int i; simple->num_clocks = count; if (!count) return 0; simple->clks = devm_kcalloc(dev, simple->num_clocks, sizeof(struct clk *), GFP_KERNEL); if (!simple->clks) return -ENOMEM; for (i = 0; i < simple->num_clocks; i++) { struct clk *clk; int ret; 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; } return 0; } 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; platform_set_drvdata(pdev, simple); simple->dev = dev; ret = dwc3_of_simple_clk_init(simple, of_clk_get_parent_count(np)); if (ret) return ret; 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_disable_unprepare(simple->clks[i]); clk_put(simple->clks[i]); } of_platform_depopulate(dev); pm_runtime_put_sync(dev); pm_runtime_disable(dev); return 0; } #ifdef CONFIG_PM 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; } #endif 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 = "rockchip,rk3399-dwc3" }, { .compatible = "xlnx,zynqmp-dwc3" }, { .compatible = "cavium,octeon-7130-usb-uctl" }, { /* 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 "); rews' onchange='this.form.submit();'>mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-01 09:22:08 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-01 09:22:08 -0800
commit35609502ac5dea2b149ec0368791d9c0e246bd65 (patch)
tree6819f6bc5b8c3585b7a19cc0d8d25d703a1bc57c /drivers/usb/chipidea/ci.h
parentc325b3533730016ca5cdaf902d62550b4243fe43 (diff)
parent91539eb1fda2d530d3b268eef542c5414e54bf1a (diff)
Merge tag 'dmaengine-fix-4.10-rc7' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul: "A couple of fixes showed up late in the cycle so sending them up and sending early in the week and not on Friday :). They fix a double lock in pl330 driver and runtime pm fixes for cppi driver" * tag 'dmaengine-fix-4.10-rc7' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: pl330: fix double lock dmaengine: cppi41: Clean up pointless warnings dmaengine: cppi41: Fix oops in cppi41_runtime_resume dmaengine: cppi41: Fix runtime PM timeouts with USB mass storage
Diffstat (limited to 'drivers/usb/chipidea/ci.h')