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Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* OPA362 analog video amplifier with output/power control
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*
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* Copyright (C) 2014 Golden Delicious Computers
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* Author: H. Nikolaus Schaller <hns@goldelico.com>
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*
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* based on encoder-tfp410
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*
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* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
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* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
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*/
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include "../dss/omapdss.h"
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struct panel_drv_data {
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struct omap_dss_device dssdev;
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struct gpio_desc *enable_gpio;
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};
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#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
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static int opa362_connect(struct omap_dss_device *src,
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struct omap_dss_device *dst)
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{
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return omapdss_device_connect(dst->dss, dst, dst->next);
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}
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static void opa362_disconnect(struct omap_dss_device *src,
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struct omap_dss_device *dst)
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{
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omapdss_device_disconnect(dst, dst->next);
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}
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static void opa362_enable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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if (ddata->enable_gpio)
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gpiod_set_value_cansleep(ddata->enable_gpio, 1);
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}
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static void opa362_disable(struct omap_dss_device *dssdev)
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{
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struct panel_drv_data *ddata = to_panel_data(dssdev);
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if (ddata->enable_gpio)
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gpiod_set_value_cansleep(ddata->enable_gpio, 0);
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}
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static const struct omap_dss_device_ops opa362_ops = {
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.connect = opa362_connect,
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.disconnect = opa362_disconnect,
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.enable = opa362_enable,
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.disable = opa362_disable,
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};
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static int opa362_probe(struct platform_device *pdev)
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{
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struct panel_drv_data *ddata;
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struct omap_dss_device *dssdev;
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struct gpio_desc *gpio;
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dev_dbg(&pdev->dev, "probe\n");
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ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
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if (!ddata)
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return -ENOMEM;
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platform_set_drvdata(pdev, ddata);
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gpio = devm_gpiod_get_optional(&pdev->dev, "enable", GPIOD_OUT_LOW);
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if (IS_ERR(gpio))
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return PTR_ERR(gpio);
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ddata->enable_gpio = gpio;
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dssdev = &ddata->dssdev;
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dssdev->ops = &opa362_ops;
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dssdev->dev = &pdev->dev;
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dssdev->type = OMAP_DISPLAY_TYPE_VENC;
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dssdev->owner = THIS_MODULE;
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dssdev->of_ports = BIT(1) | BIT(0);
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dssdev->next = omapdss_of_find_connected_device(pdev->dev.of_node, 1);
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if (IS_ERR(dssdev->next)) {
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if (PTR_ERR(dssdev->next) != -EPROBE_DEFER)
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dev_err(&pdev->dev, "failed to find video sink\n");
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return PTR_ERR(dssdev->next);
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}
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omapdss_device_register(dssdev);
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return 0;
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}
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static int __exit opa362_remove(struct platform_device *pdev)
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{
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struct panel_drv_data *ddata = platform_get_drvdata(pdev);
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struct omap_dss_device *dssdev = &ddata->dssdev;
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if (dssdev->next)
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omapdss_device_put(dssdev->next);
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omapdss_device_unregister(&ddata->dssdev);
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opa362_disable(dssdev);
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return 0;
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}
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static const struct of_device_id opa362_of_match[] = {
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{ .compatible = "omapdss,ti,opa362", },
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{},
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};
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MODULE_DEVICE_TABLE(of, opa362_of_match);
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static struct platform_driver opa362_driver = {
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.probe = opa362_probe,
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.remove = __exit_p(opa362_remove),
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.driver = {
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.name = "amplifier-opa362",
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.of_match_table = opa362_of_match,
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.suppress_bind_attrs = true,
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},
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};
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module_platform_driver(opa362_driver);
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MODULE_AUTHOR("H. Nikolaus Schaller <hns@goldelico.com>");
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MODULE_DESCRIPTION("OPA362 analog video amplifier with output/power control");
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MODULE_LICENSE("GPL v2");
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