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https://github.com/followmsi/android_kernel_google_msm.git
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06e5e6ec87
Previously the WFD driver was reponsible for signalling the online/offline events to userspace listeners. This led to redundant notifications due to the manner in which the WFD driver is used. The signalling is better purposed when done from MDP driver. Change-Id: Ifffbacb565f8758b65139f7b0e32df0773247e2d Signed-off-by: Deva Ramasubramanian <dramasub@codeaurora.org>
117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/ioctl.h>
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#include <linux/spinlock.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/version.h>
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#include "mdp4_wfd_writeback_util.h"
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#include "msm_fb.h"
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static int writeback_on(struct platform_device *pdev)
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{
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return 0;
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}
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static int writeback_off(struct platform_device *pdev)
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{
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return 0;
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}
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static int writeback_probe(struct platform_device *pdev)
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{
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struct msm_fb_data_type *mfd;
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struct platform_device *mdp_dev = NULL;
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struct msm_fb_panel_data *pdata = NULL;
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int rc = 0;
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WRITEBACK_MSG_ERR("Inside writeback_probe\n");
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mfd = platform_get_drvdata(pdev);
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if (!mfd)
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return -ENODEV;
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if (mfd->key != MFD_KEY)
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return -EINVAL;
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mdp_dev = platform_device_alloc("mdp", pdev->id);
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if (!mdp_dev)
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return -ENOMEM;
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/*
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* link to the latest pdev
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*/
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mfd->pdev = mdp_dev;
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mfd->dest = DISPLAY_LCD;
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if (platform_device_add_data
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(mdp_dev, pdev->dev.platform_data,
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sizeof(struct msm_fb_panel_data))) {
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pr_err("writeback_probe: "
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"platform_device_add_data failed!\n");
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platform_device_put(mdp_dev);
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return -ENOMEM;
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}
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pdata = (struct msm_fb_panel_data *)mdp_dev->dev.platform_data;
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pdata->on = writeback_on;
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pdata->off = writeback_off;
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pdata->next = pdev;
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/*
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* get/set panel specific fb info
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*/
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mfd->panel_info = pdata->panel_info;
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mfd->fb_imgType = MDP_RGB_565;
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platform_set_drvdata(mdp_dev, mfd);
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mfd->writeback_sdev.name = "wfd";
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rc = switch_dev_register(&mfd->writeback_sdev);
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if (rc) {
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pr_err("Failed to setup switch dev for writeback panel");
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return rc;
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}
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rc = platform_device_add(mdp_dev);
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if (rc) {
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WRITEBACK_MSG_ERR("failed to add device");
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platform_device_put(mdp_dev);
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return rc;
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}
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return rc;
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}
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static int writeback_remove(struct platform_device *pdev)
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{
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struct msm_fb_data_type *mfd = platform_get_drvdata(pdev);
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switch_dev_unregister(&mfd->writeback_sdev);
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return 0;
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}
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static struct platform_driver writeback_driver = {
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.probe = writeback_probe,
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.remove = writeback_remove,
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.driver = {
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.name = "writeback",
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},
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};
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static int __init writeback_driver_init(void)
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{
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int rc = 0;
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WRITEBACK_MSG_ERR("Inside writeback_driver_init\n");
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rc = platform_driver_register(&writeback_driver);
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return rc;
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}
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module_init(writeback_driver_init);
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