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Commit a457abbf authored by George Shen's avatar George Shen
Browse files

msm: kgsl: Do not use GMU for bus DCVS 



Bypassing GMU for GPU bus DCVS. GMU is not ready to vote
BW only without GPU frequency change.

CRs-Fixed: 2085877
Change-Id: Ie10d8dbc1728cb60cecc42469c0779cef94515fd
Signed-off-by: default avatarGeorge Shen <sqiao@codeaurora.org>
parent 1d9aee75

drivers/gpu/msm/kgsl_pwrctrl.c

+2 −11
Original line number Diff line number Diff line
@@ -214,18 +214,10 @@ static void kgsl_pwrctrl_vbif_update(unsigned long ab) 
static int kgsl_bus_scale_request(struct kgsl_device *device,

		unsigned int buslevel)

{

	struct gmu_device *gmu = &device->gmu;

	struct kgsl_pwrctrl *pwr = &device->pwrctrl;

	int ret = 0;



	/* GMU scales BW */

	if (kgsl_gmu_isenabled(device)) {

		if (!(gmu->flags & GMU_HFI_ON) || !buslevel)

			/* Zero bus level is invalid for GMU to vote */

			return 0;



		ret = gmu_dcvs_set(gmu, INVALID_DCVS_IDX, buslevel);

	} else if (pwr->pcl) {

	if (pwr->pcl) {

		/* Linux bus driver scales BW */

		ret = msm_bus_scale_client_update_request(pwr->pcl, buslevel);

	}
@@ -291,8 +283,7 @@ void kgsl_pwrctrl_buslevel_update(struct kgsl_device *device, 
	unsigned long ab;



	/* the bus should be ON to update the active frequency */

	if (!(kgsl_gmu_isenabled(device)) && on &&

		!(test_bit(KGSL_PWRFLAGS_AXI_ON, &pwr->power_flags)))

	if (on && !(test_bit(KGSL_PWRFLAGS_AXI_ON, &pwr->power_flags)))

		return;

	/*

	 * If the bus should remain on calculate our request and submit it,