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Commit 927d34f7 authored by Yu SI's avatar Yu SI
Browse files

msm: cvp: poll on cvp lpi status during power down 



polling on cvp lpi status check during power down

Change-Id: I21129746cd4841af7e7a577946c543146bc9d6fc
Signed-off-by: default avatarYu SI <ysi@codeaurora.org>
parent e5734f37

drivers/media/platform/msm/cvp/cvp_hfi.c

+17 −1
Original line number Diff line number Diff line
@@ -4132,7 +4132,23 @@ static void power_off_iris2(struct iris_hfi_device *device) 
	__write_register(device,

		CVP_WRAPPER_DEBUG_BRIDGE_LPI_CONTROL, 0x7);



	reg_status = 0;

	count = 0;

	while ((reg_status != 0x7) && count < max_count) {

		lpi_status = __read_register(device,

			CVP_WRAPPER_DEBUG_BRIDGE_LPI_STATUS);

		reg_status = lpi_status & 0x7;

		/* Wait for debug bridge lpi status to be set */

		usleep_range(50, 100);

		count++;

	}

	dprintk(CVP_PWR,

		"DBLP Set : lpi_status %d reg_status %d (count %d)\n",

		lpi_status, reg_status, count);

	if (count == max_count) {

		dprintk(CVP_WARN,

			"DBLP Set: status %x %x\n", reg_status, lpi_status);

	}



	/* HPG 6.1.2 Step 4, debug bridge to lpi release */

	__write_register(device,