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/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 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.
*/
#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
#include <linux/irqdomain.h>
#include <linux/irq.h>
#include <linux/kthread.h>
#include "sde_irq.h"
#include "sde_core_irq.h"
static uint32_t g_sde_irq_status;
irqreturn_t sde_irq(struct msm_kms *kms)
{
struct sde_kms *sde_kms = to_sde_kms(kms);
u32 interrupts;
sde_kms->hw_intr->ops.get_interrupt_sources(sde_kms->hw_intr,
&interrupts);
/* store irq status in case of irq-storm debugging */
g_sde_irq_status = interrupts;
/*
* Taking care of MDP interrupt
*/
if (interrupts & IRQ_SOURCE_MDP) {
interrupts &= ~IRQ_SOURCE_MDP;
sde_core_irq(sde_kms);
}
/*
* Routing all other interrupts to external drivers
*/
while (interrupts) {
irq_hw_number_t hwirq = fls(interrupts) - 1;
unsigned int mapping;
int rc;
mapping = irq_find_mapping(sde_kms->irq_controller.domain,
hwirq);
if (mapping == 0) {
SDE_EVT32(hwirq, SDE_EVTLOG_ERROR);
goto error;
}
rc = generic_handle_irq(mapping);
if (rc < 0) {
SDE_EVT32(hwirq, mapping, rc, SDE_EVTLOG_ERROR);
goto error;
}
interrupts &= ~(1 << hwirq);
}
return IRQ_HANDLED;
error:
/* bad situation, inform irq system, it may disable overall MDSS irq */
return IRQ_NONE;
}
void sde_irq_preinstall(struct msm_kms *kms)
{
struct sde_kms *sde_kms = to_sde_kms(kms);
if (!sde_kms->dev || !sde_kms->dev->dev) {
pr_err("invalid device handles\n");
return;
}
sde_core_irq_preinstall(sde_kms);
}
int sde_irq_postinstall(struct msm_kms *kms)
{
struct sde_kms *sde_kms = to_sde_kms(kms);
int rc;
if (!kms) {
SDE_ERROR("invalid parameters\n");
return -EINVAL;
}
rc = sde_core_irq_postinstall(sde_kms);
return rc;
}
void sde_irq_uninstall(struct msm_kms *kms)
{
struct sde_kms *sde_kms = to_sde_kms(kms);
if (!kms) {
SDE_ERROR("invalid parameters\n");
return;
}
sde_core_irq_uninstall(sde_kms);
sde_core_irq_domain_fini(sde_kms);
}
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