On Fri, Jun 27, 2014 at 9:09 AM, Peter Chen <peter.chen@xxxxxxxxxxxxx> wrote: > On Fri, Jun 27, 2014 at 09:10:09AM +0530, Punnaiah Choudary Kalluri wrote: >> Zynq soc usb controller is a synopsys IP and it is compatible >> with the chipidea spec. So, reusing chipidea drivers for zynq usb >> controller. > > What means "... usb controller is a synopsys IP", or it should be "uses > synopsys IP"? Zynq soc uses synopsys usb IP. I will correct it >> >> Signed-off-by: Punnaiah Choudary Kalluri <punnaia@xxxxxxxxxx> >> --- >> drivers/usb/chipidea/Makefile | 1 + >> drivers/usb/chipidea/ci_hdrc_zynq.c | 115 +++++++++++++++++++++++++++++++++++ >> 2 files changed, 116 insertions(+), 0 deletions(-) >> create mode 100644 drivers/usb/chipidea/ci_hdrc_zynq.c >> >> diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile >> index 2f099c7..b0d6b6f 100644 >> --- a/drivers/usb/chipidea/Makefile >> +++ b/drivers/usb/chipidea/Makefile >> @@ -12,6 +12,7 @@ ci_hdrc-$(CONFIG_USB_OTG_FSM) += otg_fsm.o >> >> obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_msm.o >> obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_zevio.o >> +obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_zynq.o >> >> # PCI doesn't provide stubs, need to check >> ifneq ($(CONFIG_PCI),) >> diff --git a/drivers/usb/chipidea/ci_hdrc_zynq.c b/drivers/usb/chipidea/ci_hdrc_zynq.c >> new file mode 100644 >> index 0000000..b3667da >> --- /dev/null >> +++ b/drivers/usb/chipidea/ci_hdrc_zynq.c >> @@ -0,0 +1,115 @@ >> +/* >> + * Copyright (C) 2014 Xilinx, Inc. >> + * >> + * This program is free software; you can redistribute it and/or modify it under >> + * the terms of the GNU General Public License version 2 as published by the >> + * Free Software Foundation; either version 2 of the License, or (at your >> + * option) any later version. >> + */ >> + >> +#include <linux/clk.h> >> +#include <linux/dma-mapping.h> >> +#include <linux/module.h> >> +#include <linux/of_platform.h> >> +#include <linux/platform_device.h> >> +#include <linux/pm_runtime.h> >> +#include <linux/usb/chipidea.h> >> + >> +#include "ci.h" >> + >> +#define ZYNQ_USB_DMA_MASK 0xFFFFFFF0 >> + >> +struct ci_hdrc_zynq_data { >> + struct platform_device *ci_pdev; >> + struct clk *clk; >> +}; >> + >> +static struct ci_hdrc_platform_data pdata = { >> + .name = "ci_hdrc_zynq", >> + .capoffset = DEF_CAPOFFSET, >> + .flags = CI_HDRC_REQUIRE_TRANSCEIVER >> +}; >> + >> +static int ci_hdrc_zynq_probe(struct platform_device *pdev) >> +{ >> + struct ci_hdrc_zynq_data *data; >> + int ret; >> + >> + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); >> + if (!data) { >> + dev_err(&pdev->dev, "Failed to allocate ci_hdrc-imx data!\n"); > > hmm, you forget to delete "xxx-imx". Oh! i will correct it and send you the v2. Regards, Punnaiah > >> + return -ENOMEM; >> + } >> + >> + data->clk = devm_clk_get(&pdev->dev, NULL); >> + if (IS_ERR(data->clk)) { >> + dev_err(&pdev->dev, >> + "Failed to get clock, err=%ld\n", PTR_ERR(data->clk)); >> + return PTR_ERR(data->clk); >> + } >> + >> + ret = clk_prepare_enable(data->clk); >> + if (ret) { >> + dev_err(&pdev->dev, >> + "Failed to prepare or enable clock, err=%d\n", ret); >> + return ret; >> + } >> + >> + ret = dma_coerce_mask_and_coherent(&pdev->dev, ZYNQ_USB_DMA_MASK); >> + if (ret) >> + goto err_clk; >> + >> + data->ci_pdev = ci_hdrc_add_device(&pdev->dev, >> + pdev->resource, pdev->num_resources, >> + &pdata); >> + if (IS_ERR(data->ci_pdev)) { >> + ret = PTR_ERR(data->ci_pdev); >> + dev_err(&pdev->dev, >> + "Can't register ci_hdrc platform device, err=%d\n", >> + ret); >> + goto err_clk; >> + } >> + >> + platform_set_drvdata(pdev, data); >> + >> + pm_runtime_no_callbacks(&pdev->dev); >> + pm_runtime_enable(&pdev->dev); >> + return 0; >> + >> +err_clk: >> + clk_disable_unprepare(data->clk); >> + return ret; >> +} >> + >> +static int ci_hdrc_zynq_remove(struct platform_device *pdev) >> +{ >> + struct ci_hdrc_zynq_data *data = platform_get_drvdata(pdev); >> + >> + pm_runtime_disable(&pdev->dev); >> + ci_hdrc_remove_device(data->ci_pdev); >> + clk_disable_unprepare(data->clk); >> + >> + return 0; >> +} >> + >> +static const struct of_device_id ci_hdrc_zynq_dt_ids[] = { >> + { .compatible = "xlnx,zynq-usb-2.20a" }, >> + {}, >> +}; >> + >> +static struct platform_driver ci_hdrc_zynq_driver = { >> + .probe = ci_hdrc_zynq_probe, >> + .remove = ci_hdrc_zynq_remove, >> + .driver = { >> + .name = "zynq_usb", >> + .owner = THIS_MODULE, >> + .of_match_table = ci_hdrc_zynq_dt_ids, >> + }, >> +}; >> + >> +module_platform_driver(ci_hdrc_zynq_driver); >> + >> +MODULE_ALIAS("platform:zynq_usb"); >> +MODULE_DESCRIPTION("CI HDRC ZYNQ USB binding"); >> +MODULE_AUTHOR("Xilinx Inc"); >> +MODULE_LICENSE("GPL v2"); >> -- >> 1.7.4 >> >> > > -- > > Best Regards, > Peter Chen -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html