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drm/msm: module param to dump state on error irq 

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1478358492-30738-8-git-send-email-robdclark@gmail.com
This commit is contained in:
Rob Clark 2016-11-05 11:08:12 -04:00 committed by Sean Paul
parent dd701ae9ce
commit 06d9f56f1d
3 changed files with 25 additions and 0 deletions
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10
drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c
View File

@ -15,6 +15,7 @@
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <drm/drm_print.h>
#include "msm_drv.h"
#include "mdp4_kms.h"
@ -29,7 +30,16 @@ void mdp4_set_irqmask(struct mdp_kms *mdp_kms, uint32_t 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)

11
drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c
View File

@ -17,6 +17,8 @@
#include <linux/irq.h>
#include <drm/drm_print.h>
#include "msm_drv.h"
#include "mdp5_kms.h"
@ -30,7 +32,16 @@ void mdp5_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask,
static void mdp5_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
{
struct mdp5_kms *mdp5_kms = container_of(irq, struct mdp5_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(mdp5_kms->dev->dev);
drm_state_dump(mdp5_kms->dev, &p);
}
}
void mdp5_irq_preinstall(struct msm_kms *kms)

4
drivers/gpu/drm/msm/msm_drv.c
View File

@ -79,6 +79,10 @@ static char *vram = "16m";
MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU)");
module_param(vram, charp, 0);
bool dumpstate = false;
MODULE_PARM_DESC(dumpstate, "Dump KMS state on errors");
module_param(dumpstate, bool, 0600);
/*
* Util/helpers:
*/