diff options
| author | Jordan Crouse <jcrouse@codeaurora.org> | 2018-09-20 17:04:43 -0600 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2018-10-03 20:24:55 -0400 |
| commit | df0dff132905974697e2a19aa8bcc0ecc447c00e (patch) | |
| tree | 9545cdb4706b36754261fea47d7eea915285fe14 /drivers/gpu/drm/msm/adreno/a6xx_gmu.c | |
| parent | 32aa27e15c28d3898ed6f9b3c98f95f34a81eab2 (diff) | |
| download | linux-df0dff132905974697e2a19aa8bcc0ecc447c00e.tar.bz2 | |
drm/msm/a6xx: Poll for HFI responses
The only HFI communication with the GMU on sdm845 happens
during initialization and all commands are synchronous. A fancy
interrupt tasklet and associated infrastructure is entirely
not eeded and puts us at the mercy of the scheduler.
Instead poll for the message signal and handle the response
immediately and go on our way.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno/a6xx_gmu.c')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index 9265adf8a1d3..613d639833c0 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -2,7 +2,6 @@ /* Copyright (c) 2017-2018 The Linux Foundation. All rights reserved. */ #include <linux/clk.h> -#include <linux/iopoll.h> #include <linux/pm_opp.h> #include <soc/qcom/cmd-db.h> @@ -42,9 +41,6 @@ static irqreturn_t a6xx_hfi_irq(int irq, void *data) status = gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO); gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, status); - if (status & A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ) - tasklet_schedule(&gmu->hfi_tasklet); - if (status & A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) { dev_err_ratelimited(gmu->dev, "GMU firmware fault\n"); @@ -135,9 +131,6 @@ static int a6xx_gmu_hfi_start(struct a6xx_gmu *gmu) u32 val; int ret; - gmu_rmw(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, - A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ, 0); - gmu_write(gmu, REG_A6XX_GMU_HFI_CTRL_INIT, 1); ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_HFI_CTRL_STATUS, val, @@ -566,8 +559,7 @@ static int a6xx_gmu_fw_start(struct a6xx_gmu *gmu, unsigned int state) } #define A6XX_HFI_IRQ_MASK \ - (A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ | \ - A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) + (A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) #define A6XX_GMU_IRQ_MASK \ (A6XX_GMU_AO_HOST_INTERRUPT_STATUS_WDOG_BITE | \ @@ -1199,9 +1191,6 @@ int a6xx_gmu_probe(struct a6xx_gpu *a6xx_gpu, struct device_node *node) if (gmu->hfi_irq < 0 || gmu->gmu_irq < 0) goto err; - /* Set up a tasklet to handle GMU HFI responses */ - tasklet_init(&gmu->hfi_tasklet, a6xx_hfi_task, (unsigned long) gmu); - /* Get the power levels for the GMU and GPU */ a6xx_gmu_pwrlevels_probe(gmu); |