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drm/komeda: Add event handling for EMPTY/FULL 

EMPTY/FULL are HW input/output FIFO condition identifer, which are
useful information for addressing the problem, so expose them.

Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Reviewed-by: Mihail Atanassov <mihail.atanassov@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191212072737.30116-1-james.qian.wang@arm.com
This commit is contained in:
james qian wang (Arm Technology China) 2019-12-12 07:27:55 +00:00
parent 52028bfcb2
commit 8f902dbd6e
4 changed files with 21 additions and 2 deletions
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13
drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
View File

@ -20,8 +20,10 @@ static u64 get_lpu_event(struct d71_pipeline *d71_pipeline)
evts |= KOMEDA_EVENT_IBSY;
if (raw_status & LPU_IRQ_EOW)
evts |= KOMEDA_EVENT_EOW;
if (raw_status & LPU_IRQ_OVR)
evts |= KOMEDA_EVENT_OVR;
if (raw_status & (LPU_IRQ_ERR | LPU_IRQ_IBSY)) {
if (raw_status & (LPU_IRQ_ERR | LPU_IRQ_IBSY | LPU_IRQ_OVR)) {
u32 restore = 0, tbu_status;
/* Check error of LPU status */
status = malidp_read32(reg, BLK_STATUS);
@ -45,6 +47,15 @@ static u64 get_lpu_event(struct d71_pipeline *d71_pipeline)
restore |= LPU_STATUS_ACE3;
evts |= KOMEDA_ERR_ACE3;
}
if (status & LPU_STATUS_FEMPTY) {
restore |= LPU_STATUS_FEMPTY;
evts |= KOMEDA_EVENT_EMPTY;
}
if (status & LPU_STATUS_FFULL) {
restore |= LPU_STATUS_FFULL;
evts |= KOMEDA_EVENT_FULL;
}
if (restore != 0)
malidp_write32_mask(reg, BLK_STATUS, restore, 0);

3
drivers/gpu/drm/arm/display/komeda/d71/d71_regs.h
View File

@ -175,6 +175,7 @@
#define TBU_DOUTSTDCAPB_MASK 0x3F
/* LPU_IRQ_BITS */
#define LPU_IRQ_OVR BIT(9)
#define LPU_IRQ_IBSY BIT(10)
#define LPU_IRQ_ERR BIT(11)
#define LPU_IRQ_EOW BIT(12)
@ -185,6 +186,8 @@
#define LPU_STATUS_AXIE BIT(4)
#define LPU_STATUS_AXIRP BIT(5)
#define LPU_STATUS_AXIWP BIT(6)
#define LPU_STATUS_FEMPTY BIT(11)
#define LPU_STATUS_FFULL BIT(14)
#define LPU_STATUS_ACE0 BIT(16)
#define LPU_STATUS_ACE1 BIT(17)
#define LPU_STATUS_ACE2 BIT(18)

5
drivers/gpu/drm/arm/display/komeda/komeda_dev.h
View File

@ -20,6 +20,8 @@
#define KOMEDA_EVENT_OVR BIT_ULL(4)
#define KOMEDA_EVENT_EOW BIT_ULL(5)
#define KOMEDA_EVENT_MODE BIT_ULL(6)
#define KOMEDA_EVENT_FULL BIT_ULL(7)
#define KOMEDA_EVENT_EMPTY BIT_ULL(8)
#define KOMEDA_ERR_TETO BIT_ULL(14)
#define KOMEDA_ERR_TEMR BIT_ULL(15)
@ -49,7 +51,8 @@
KOMEDA_ERR_ZME | KOMEDA_ERR_MERR | KOMEDA_ERR_TCF |\
KOMEDA_ERR_TTNG | KOMEDA_ERR_TTF)
#define KOMEDA_WARN_EVENTS KOMEDA_ERR_CSCE
#define KOMEDA_WARN_EVENTS \
(KOMEDA_ERR_CSCE | KOMEDA_EVENT_FULL | KOMEDA_EVENT_EMPTY)
#define KOMEDA_INFO_EVENTS (0 \
| KOMEDA_EVENT_VSYNC \

2
drivers/gpu/drm/arm/display/komeda/komeda_event.c
View File

@ -78,6 +78,8 @@ static void evt_str(struct komeda_str *str, u64 events)
/* LPU errors or events */
evt_sprintf(str, events & KOMEDA_EVENT_IBSY, "IBSY|");
evt_sprintf(str, events & KOMEDA_EVENT_EMPTY, "EMPTY|");
evt_sprintf(str, events & KOMEDA_EVENT_FULL, "FULL|");
evt_sprintf(str, events & KOMEDA_ERR_AXIE, "AXIE|");
evt_sprintf(str, events & KOMEDA_ERR_ACE0, "ACE0|");
evt_sprintf(str, events & KOMEDA_ERR_ACE1, "ACE1|");