[PATCH 03/17] drm/msm: a6xx: Fix gx_is_on check for a7x family

[Akhil P Oommen]

Bitfield definition for REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS register is
different in A7XX family. Check the correct bits to see if GX is
collapsed on A7XX series.

Signed-off-by: Akhil P Oommen <akhilpo at oss.qualcomm.com>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 41129692d127b70e9293b82bea5ccb6b911b0bfb..790ef2f94a0b0cd40433d7edb6a89e4f04408bf5 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -93,6 +93,8 @@ bool a6xx_gmu_sptprac_is_on(struct a6xx_gmu *gmu)
 /* Check to see if the GX rail is still powered */
 bool a6xx_gmu_gx_is_on(struct a6xx_gmu *gmu)
 {
+	struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
+	struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
 	u32 val;
 
 	/* This can be called from gpu state code so make sure GMU is valid */
@@ -101,6 +103,11 @@ bool a6xx_gmu_gx_is_on(struct a6xx_gmu *gmu)
 
 	val = gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS);
 
+	if (adreno_is_a7xx(adreno_gpu))
+		return !(val &
+			(A7XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_GDSC_POWER_OFF |
+			A7XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_CLK_OFF));
+
 	return !(val &
 		(A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_GDSC_POWER_OFF |
 		A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_CLK_OFF));

-- 
2.50.1