From: "Steven J. Hill" <Steven.Hill@cavium.com> To: <linux-usb@vger.kernel.org> Cc: <linux-kernel@vger.kernel.org>, <linux-mips@linux-mips.org>, David Daney <david.daney@cavium.com> Subject: [PATCH v3] usb: dwc3: OCTEON: add support for device tree Date: Sat, 10 Sep 2016 15:54:43 -0500 [thread overview] Message-ID: <57D47313.7040109@cavium.com> (raw) This patch adds support to parse probe data for the dwc3-octeon driver using device tree. The DWC3 IP core is found on OCTEON III processors. Signed-off-by: Steven J. Hill <Steven.Hill@cavium.com> Changes in v3: - Massive simplification of glue logic. Almost all the work is done in the SoC platform code. Changes in v2: - Changed comment block to acurately describe why the DMA properties are being set. - Deleted 'dwc3_octeon_remove()' function as it serves no purpose. Also changed driver from tristate to a boolen as we have no plans to make it modular. - Changed driver dependency from CAVIUM_OCTEON_SOC to CPU_CAVIUM_OCTEON || COMPILE_TEST per Balbi's request. --- drivers/usb/dwc3/Kconfig | 10 +++++++ drivers/usb/dwc3/Makefile | 1 + drivers/usb/dwc3/dwc3-octeon.c | 61 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 72 insertions(+) create mode 100644 drivers/usb/dwc3/dwc3-octeon.c diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index a64ce1c..f2cb24b 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -105,4 +105,14 @@ config USB_DWC3_ST inside (i.e. STiH407). Say 'Y' or 'M' if you have one such device. +config USB_DWC3_OCTEON + bool "Cavium OCTEON III Platforms" + depends on CPU_CAVIUM_OCTEON || COMPILE_TEST + depends on OF + default USB_DWC3 + help + Cavium OCTEON III SoCs with one DesignWare Core USB3 IP + inside (i.e. cn71xx and cn78xx). + Say 'Y' or 'M' if you have one such device. + endif diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 22420e1..f1a7a3e 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -39,3 +39,4 @@ 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_ST) += dwc3-st.o +obj-$(CONFIG_USB_DWC3_OCTEON) += dwc3-octeon.o diff --git a/drivers/usb/dwc3/dwc3-octeon.c b/drivers/usb/dwc3/dwc3-octeon.c new file mode 100644 index 0000000..ae84a01 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-octeon.c @@ -0,0 +1,61 @@ +/** + * dwc3-octeon.c - Cavium OCTEON III DWC3 Specific Glue Layer + * + * Copyright (C) 2016 Cavium Networks + * + * Author: Steven J. Hill <steven.hill@cavium.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. + * + * Inspired by dwc3-exynos.c and dwc3-st.c files. + */ + +#include <linux/module.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/dma-mapping.h> + +static int dwc3_octeon_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + int ret; + + /* + * Right now device-tree probed devices do not provide + * "dma-ranges" or "dma-coherent" properties. + */ + ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64)); + if (ret) + return ret; + + return 0; +} + +static const struct of_device_id octeon_dwc3_match[] = { + { .compatible = "cavium,octeon-7130-usb-uctl", }, + {}, +}; +MODULE_DEVICE_TABLE(of, octeon_dwc3_match); + +static struct platform_driver dwc3_octeon_driver = { + .probe = dwc3_octeon_probe, + .driver = { + .name = "octeon-dwc3", + .of_match_table = octeon_dwc3_match, + .pm = NULL, + }, +}; +module_platform_driver(dwc3_octeon_driver); + +MODULE_ALIAS("platform:octeon-dwc3"); +MODULE_AUTHOR("Steven J. Hill <steven.hill@cavium.com"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("DesignWare USB3 OCTEON Glue Layer"); -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: "Steven J. Hill" <Steven.Hill@cavium.com> To: linux-usb@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-mips@linux-mips.org, David Daney <david.daney@cavium.com> Subject: [PATCH v3] usb: dwc3: OCTEON: add support for device tree Date: Sat, 10 Sep 2016 15:54:43 -0500 [thread overview] Message-ID: <57D47313.7040109@cavium.com> (raw) Message-ID: <20160910205443.lg7OW3r177mTz_K7PX0Skc0CeXe27jleuVYuj0YVEfI@z> (raw) This patch adds support to parse probe data for the dwc3-octeon driver using device tree. The DWC3 IP core is found on OCTEON III processors. Signed-off-by: Steven J. Hill <Steven.Hill@cavium.com> Changes in v3: - Massive simplification of glue logic. Almost all the work is done in the SoC platform code. Changes in v2: - Changed comment block to acurately describe why the DMA properties are being set. - Deleted 'dwc3_octeon_remove()' function as it serves no purpose. Also changed driver from tristate to a boolen as we have no plans to make it modular. - Changed driver dependency from CAVIUM_OCTEON_SOC to CPU_CAVIUM_OCTEON || COMPILE_TEST per Balbi's request. --- drivers/usb/dwc3/Kconfig | 10 +++++++ drivers/usb/dwc3/Makefile | 1 + drivers/usb/dwc3/dwc3-octeon.c | 61 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 72 insertions(+) create mode 100644 drivers/usb/dwc3/dwc3-octeon.c diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index a64ce1c..f2cb24b 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -105,4 +105,14 @@ config USB_DWC3_ST inside (i.e. STiH407). Say 'Y' or 'M' if you have one such device. +config USB_DWC3_OCTEON + bool "Cavium OCTEON III Platforms" + depends on CPU_CAVIUM_OCTEON || COMPILE_TEST + depends on OF + default USB_DWC3 + help + Cavium OCTEON III SoCs with one DesignWare Core USB3 IP + inside (i.e. cn71xx and cn78xx). + Say 'Y' or 'M' if you have one such device. + endif diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 22420e1..f1a7a3e 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -39,3 +39,4 @@ 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-$(CONFIG_USB_DWC3_ST) += dwc3-st.o +obj-$(CONFIG_USB_DWC3_OCTEON) += dwc3-octeon.o diff --git a/drivers/usb/dwc3/dwc3-octeon.c b/drivers/usb/dwc3/dwc3-octeon.c new file mode 100644 index 0000000..ae84a01 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-octeon.c @@ -0,0 +1,61 @@ +/** + * dwc3-octeon.c - Cavium OCTEON III DWC3 Specific Glue Layer + * + * Copyright (C) 2016 Cavium Networks + * + * Author: Steven J. Hill <steven.hill@cavium.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. + * + * Inspired by dwc3-exynos.c and dwc3-st.c files. + */ + +#include <linux/module.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/dma-mapping.h> + +static int dwc3_octeon_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + int ret; + + /* + * Right now device-tree probed devices do not provide + * "dma-ranges" or "dma-coherent" properties. + */ + ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64)); + if (ret) + return ret; + + return 0; +} + +static const struct of_device_id octeon_dwc3_match[] = { + { .compatible = "cavium,octeon-7130-usb-uctl", }, + {}, +}; +MODULE_DEVICE_TABLE(of, octeon_dwc3_match); + +static struct platform_driver dwc3_octeon_driver = { + .probe = dwc3_octeon_probe, + .driver = { + .name = "octeon-dwc3", + .of_match_table = octeon_dwc3_match, + .pm = NULL, + }, +}; +module_platform_driver(dwc3_octeon_driver); + +MODULE_ALIAS("platform:octeon-dwc3"); +MODULE_AUTHOR("Steven J. Hill <steven.hill@cavium.com"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("DesignWare USB3 OCTEON Glue Layer"); -- 1.9.1
next reply other threads:[~2016-09-10 21:09 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-09-10 20:54 Steven J. Hill [this message] 2016-09-10 20:54 ` [PATCH v3] usb: dwc3: OCTEON: add support for device tree Steven J. Hill 2016-09-12 6:58 ` Felipe Balbi
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