Adds a new driver _ocp2scp_. This driver takes the responsibility of creating all the devices that is connected to OCP2SCP. In the case of OMAP4, USB2PHY is connected to ocp2scp. This also includes device tree support for ocp2scp driver and the documentation with device tree binding information is updated. Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx> --- .../devicetree/bindings/misc/omap-ocp2scp.txt | 9 ++ drivers/misc/Kconfig | 8 ++ drivers/misc/Makefile | 1 + drivers/misc/omap-ocp2scp.c | 96 ++++++++++++++++++++ 4 files changed, 114 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/misc/omap-ocp2scp.txt create mode 100644 drivers/misc/omap-ocp2scp.c diff --git a/Documentation/devicetree/bindings/misc/omap-ocp2scp.txt b/Documentation/devicetree/bindings/misc/omap-ocp2scp.txt new file mode 100644 index 0000000..e9391d8 --- /dev/null +++ b/Documentation/devicetree/bindings/misc/omap-ocp2scp.txt @@ -0,0 +1,9 @@ +* OMAP OCP2SCP - ocp interface to scp interface + +properties: +- compatible : Should be "ti,omap-ocp2scp" +- #address-cells, #size-cells : Must be present if the device has sub-nodes +- ti,hwmods : must be "ocp2scp_usb_phy" + +Sub-nodes: +All the devices connected to ocp2scp are described using sub-node to ocp2scp diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 2661f6e..c70aa15 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -508,6 +508,14 @@ config USB_SWITCH_FSA9480 stereo and mono audio, video, microphone and UART data to use a common connector port. +config OMAP_OCP2SCP + tristate "OMAP OCP2SCP DRIVER" + help + Driver to enable ocp2scp module which transforms ocp interface + protocol to scp protocol. In OMAP4, USB PHY is connected via + OCP2SCP and in OMAP5, both USB PHY and SATA PHY is connected via + OCP2SCP. + source "drivers/misc/c2port/Kconfig" source "drivers/misc/eeprom/Kconfig" source "drivers/misc/cb710/Kconfig" diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 456972f..4d7c8ce 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -50,4 +50,5 @@ obj-y += lis3lv02d/ obj-y += carma/ obj-$(CONFIG_USB_SWITCH_FSA9480) += fsa9480.o obj-$(CONFIG_ALTERA_STAPL) +=altera-stapl/ +obj-$(CONFIG_OMAP_OCP2SCP) += omap-ocp2scp.o obj-$(CONFIG_INTEL_MEI) += mei/ diff --git a/drivers/misc/omap-ocp2scp.c b/drivers/misc/omap-ocp2scp.c new file mode 100644 index 0000000..f3a11e4 --- /dev/null +++ b/drivers/misc/omap-ocp2scp.c @@ -0,0 +1,96 @@ +/* + * omap-ocp2scp.c - transform ocp interface protocol to scp protocol + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Author: Kishon Vijay Abraham I <kishon@xxxxxx> + * + * 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. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/err.h> +#include <linux/pm_runtime.h> +#include <linux/of.h> +#include <linux/of_platform.h> + +static int ocp2scp_remove_devices(struct device *dev, void *c) +{ + struct platform_device *pdev = to_platform_device(dev); + + platform_device_unregister(pdev); + + return 0; +} + +static int __devinit omap_ocp2scp_probe(struct platform_device *pdev) +{ + int ret; + struct device_node *np = pdev->dev.of_node; + + if (np) { + ret = of_platform_populate(np, NULL, NULL, &pdev->dev); + if (ret) { + dev_err(&pdev->dev, "failed to add resources for ocp2scp child\n"); + goto err0; + } + } + pm_runtime_enable(&pdev->dev); + + return 0; + +err0: + device_for_each_child(&pdev->dev, NULL, ocp2scp_remove_devices); + + return ret; +} + +static int __devexit omap_ocp2scp_remove(struct platform_device *pdev) +{ + pm_runtime_disable(&pdev->dev); + device_for_each_child(&pdev->dev, NULL, ocp2scp_remove_devices); + + return 0; +} + +static const struct of_device_id omap_ocp2scp_id_table[] = { + { .compatible = "ti,omap-ocp2scp" }, + {} +}; +MODULE_DEVICE_TABLE(of, omap_usb2_id_table); + +static struct platform_driver omap_ocp2scp_driver = { + .probe = omap_ocp2scp_probe, + .remove = __devexit_p(omap_ocp2scp_remove), + .driver = { + .name = "omap-ocp2scp", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(omap_ocp2scp_id_table), + }, +}; + +static int __init omap_ocp2scp_init(void) +{ + return platform_driver_register(&omap_ocp2scp_driver); +} +arch_initcall(omap_ocp2scp_init); + +static void __exit omap_ocp2scp_exit(void) +{ + platform_driver_unregister(&omap_ocp2scp_driver); +} +module_exit(omap_ocp2scp_exit); + +MODULE_ALIAS("platform: omap-ocp2scp"); +MODULE_AUTHOR("Texas Instruments Inc."); +MODULE_DESCRIPTION("OMAP OCP2SCP DRIVER"); +MODULE_LICENSE("GPLv2"); -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
