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Commit b6841101 authored by Urvashi Agrawal's avatar Urvashi Agrawal
Browse files

msm: kgsl: Do not read retry RBBM register read 



For A650v1 a valid RBBM register read could be 0xdeafbead.
This is fixed in A650v2.1 so do not attempt to read
the registers multiple times.

Change-Id: Ifae1a3513097e041275f09a64308a816de4e50f1
Signed-off-by: default avatarUrvashi Agrawal <urvaagra@codeaurora.org>
parent cd914bbc

drivers/gpu/msm/adreno.c

+5 −4
Original line number Diff line number Diff line
@@ -3019,11 +3019,12 @@ static void adreno_retry_rbbm_read(struct kgsl_device *device, 
	}

}



static bool adreno_is_rbbm_batch_reg(struct kgsl_device *device,

static bool adreno_is_rbbm_batch_reg(struct adreno_device *adreno_dev,

	unsigned int offsetwords)

{

	if (adreno_is_a650(ADRENO_DEVICE(device)) ||

		adreno_is_a620v1(ADRENO_DEVICE(device))) {

	if ((adreno_is_a650(adreno_dev) &&

		ADRENO_CHIPID_PATCH(adreno_dev->chipid) < 2) ||

		adreno_is_a620v1(adreno_dev)) {

		if (((offsetwords >= 0x0) && (offsetwords <= 0x3FF)) ||

		((offsetwords >= 0x4FA) && (offsetwords <= 0x53F)) ||

		((offsetwords >= 0x556) && (offsetwords <= 0x5FF)) ||
@@ -3056,7 +3057,7 @@ static void adreno_regread(struct kgsl_device *device, unsigned int offsetwords, 
	rmb();



	if ((*value == 0xdeafbead) &&

		adreno_is_rbbm_batch_reg(device, offsetwords))

		adreno_is_rbbm_batch_reg(ADRENO_DEVICE(device), offsetwords))

		adreno_retry_rbbm_read(device, offsetwords, value);

}