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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
#include <drm/drm_print.h>
#include <drm/drm_vblank.h>
#include "msm_drv.h"
#include "mdp4_kms.h"
void mdp4_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask,
uint32_t old_irqmask)
{
mdp4_write(to_mdp4_kms(mdp_kms), REG_MDP4_INTR_CLEAR,
irqmask ^ (irqmask & old_irqmask));
mdp4_write(to_mdp4_kms(mdp_kms), REG_MDP4_INTR_ENABLE, irqmask);
}
static void mdp4_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
{
struct mdp4_kms *mdp4_kms = container_of(irq, struct mdp4_kms, error_handler);
static DEFINE_RATELIMIT_STATE(rs, 5*HZ, 1);
extern bool dumpstate;
DRM_ERROR_RATELIMITED("errors: %08x\n", irqstatus);
if (dumpstate && __ratelimit(&rs)) {
struct drm_printer p = drm_info_printer(mdp4_kms->dev->dev);
drm_state_dump(mdp4_kms->dev, &p);
}
}
void mdp4_irq_preinstall(struct msm_kms *kms)
{
struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
mdp4_enable(mdp4_kms);
mdp4_write(mdp4_kms, REG_MDP4_INTR_CLEAR, 0xffffffff);
mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, 0x00000000);
mdp4_disable(mdp4_kms);
}
int mdp4_irq_postinstall(struct msm_kms *kms)
{
struct mdp_kms *mdp_kms = to_mdp_kms(kms);
struct mdp4_kms *mdp4_kms = to_mdp4_kms(mdp_kms);
struct mdp_irq *error_handler = &mdp4_kms->error_handler;
error_handler->irq = mdp4_irq_error_handler;
error_handler->irqmask = MDP4_IRQ_PRIMARY_INTF_UDERRUN |
MDP4_IRQ_EXTERNAL_INTF_UDERRUN;
mdp_irq_register(mdp_kms, error_handler);
return 0;
}
void mdp4_irq_uninstall(struct msm_kms *kms)
{
struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
mdp4_enable(mdp4_kms);
mdp4_write(mdp4_kms, REG_MDP4_INTR_ENABLE, 0x00000000);
mdp4_disable(mdp4_kms);
}
irqreturn_t mdp4_irq(struct msm_kms *kms)
{
struct mdp_kms *mdp_kms = to_mdp_kms(kms);
struct mdp4_kms *mdp4_kms = to_mdp4_kms(mdp_kms);
struct drm_device *dev = mdp4_kms->dev;
struct msm_drm_private *priv = dev->dev_private;
unsigned int id;
uint32_t status, enable;
enable = mdp4_read(mdp4_kms, REG_MDP4_INTR_ENABLE);
status = mdp4_read(mdp4_kms, REG_MDP4_INTR_STATUS) & enable;
mdp4_write(mdp4_kms, REG_MDP4_INTR_CLEAR, status);
VERB("status=%08x", status);
mdp_dispatch_irqs(mdp_kms, status);
for (id = 0; id < priv->num_crtcs; id++)
if (status & mdp4_crtc_vblank(priv->crtcs[id]))
drm_handle_vblank(dev, id);
return IRQ_HANDLED;
}
int mdp4_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
{
struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
mdp4_enable(mdp4_kms);
mdp_update_vblank_mask(to_mdp_kms(kms),
mdp4_crtc_vblank(crtc), true);
mdp4_disable(mdp4_kms);
return 0;
}
void mdp4_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
{
struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
mdp4_enable(mdp4_kms);
mdp_update_vblank_mask(to_mdp_kms(kms),
mdp4_crtc_vblank(crtc), false);
mdp4_disable(mdp4_kms);
}
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