Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ecf81ed9 authored by Andrzej Hajda's avatar Andrzej Hajda Committed by Inki Dae
Browse files

drm/exynos/dsi: mask frame-done interrupt 



DSI driver is not really interested in this interrupt. It causes only
unnecessary code execution of interrupt handler and could possibly
cause FIFO overflow - as it triggers DSI interrupt handler to process
next DSI transfer. With this patch we will get rid of about 30 IRQ
handler calls per second.

Fixes: e6f988a4 ("drm/exynos: dsi: add support for Exynos5433")
Signed-off-by: default avatarAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent cb5fba71

drivers/gpu/drm/exynos/exynos_drm_dsi.c

+3 −3
Original line number Diff line number Diff line
@@ -1264,15 +1264,15 @@ static irqreturn_t exynos_dsi_irq(int irq, void *dev_id) 


	if (status & DSIM_INT_SW_RST_RELEASE) {

		u32 mask = ~(DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY |

			DSIM_INT_SFR_HDR_FIFO_EMPTY | DSIM_INT_FRAME_DONE |

			DSIM_INT_RX_ECC_ERR | DSIM_INT_SW_RST_RELEASE);

			DSIM_INT_SFR_HDR_FIFO_EMPTY | DSIM_INT_RX_ECC_ERR |

			DSIM_INT_SW_RST_RELEASE);

		exynos_dsi_write(dsi, DSIM_INTMSK_REG, mask);

		complete(&dsi->completed);

		return IRQ_HANDLED;

	}



	if (!(status & (DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY |

			DSIM_INT_FRAME_DONE | DSIM_INT_PLL_STABLE)))

			DSIM_INT_PLL_STABLE)))

		return IRQ_HANDLED;



	if (exynos_dsi_transfer_finish(dsi))