108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
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/* Copyright (c) 2013-2015, 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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#include <linux/workqueue.h>
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#include <linux/delay.h>
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#include <linux/kobject.h>
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#include <linux/string.h>
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#include <linux/sysfs.h>
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#include "mdss_dsi.h"
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#include "mdp3_ctrl.h"
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/*
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* mdp3_check_dsi_ctrl_status() - Check MDP3 DSI controller status periodically.
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* @work : dsi controller status data
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* @interval : duration in milliseconds to schedule work queue
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*
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* This function calls check_status API on DSI controller to send the BTA
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* command. If DSI controller fails to acknowledge the BTA command, it sends
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* the PANEL_ALIVE=0 status to HAL layer.
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*/
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void mdp3_check_dsi_ctrl_status(struct work_struct *work,
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uint32_t interval)
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{
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struct dsi_status_data *pdsi_status = NULL;
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struct mdss_panel_data *pdata = NULL;
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struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
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struct mdp3_session_data *mdp3_session = NULL;
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int ret = 0;
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pdsi_status = container_of(to_delayed_work(work),
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struct dsi_status_data, check_status);
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if (!pdsi_status || !(pdsi_status->mfd)) {
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pr_err("%s: mfd not available\n", __func__);
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return;
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}
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pdata = dev_get_platdata(&pdsi_status->mfd->pdev->dev);
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if (!pdata) {
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pr_err("%s: Panel data not available\n", __func__);
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return;
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}
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ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
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panel_data);
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if (!ctrl_pdata || !ctrl_pdata->check_status) {
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pr_err("%s: DSI ctrl or status_check callback not available\n",
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__func__);
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return;
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}
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mdp3_session = pdsi_status->mfd->mdp.private1;
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if (!mdp3_session) {
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pr_err("%s: Display is off\n", __func__);
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return;
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}
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if (mdp3_session->in_splash_screen) {
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schedule_delayed_work(&pdsi_status->check_status,
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msecs_to_jiffies(interval));
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pr_debug("%s: cont splash is on\n", __func__);
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return;
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}
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mutex_lock(&mdp3_session->lock);
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if (!mdp3_session->status) {
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pr_debug("%s: display off already\n", __func__);
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mutex_unlock(&mdp3_session->lock);
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return;
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}
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if (mdp3_session->wait_for_dma_done)
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ret = mdp3_session->wait_for_dma_done(mdp3_session);
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if (!ret)
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ret = ctrl_pdata->check_status(ctrl_pdata);
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else
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pr_err("%s: wait_for_dma_done error\n", __func__);
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mutex_unlock(&mdp3_session->lock);
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if (mdss_fb_is_power_on_interactive(pdsi_status->mfd)) {
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if (ret > 0) {
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schedule_delayed_work(&pdsi_status->check_status,
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msecs_to_jiffies(interval));
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} else {
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char *envp[2] = {"PANEL_ALIVE=0", NULL};
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pdata->panel_info.panel_dead = true;
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ret = kobject_uevent_env(
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&pdsi_status->mfd->fbi->dev->kobj,
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KOBJ_CHANGE, envp);
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pr_err("%s: Panel has gone bad, sending uevent - %s\n",
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__func__, envp[0]);
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}
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}
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}
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