Merge "msm: kgsl: Enable apb clock before isdb register writes" (a7d9ad88) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/gpu/msm/kgsl_snapshot.c

+28 −1

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
		* Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
		*/

		#include <linux/of.h>
		@@ -618,10 +618,28 @@ static void isdb_write(void __iomem *base, u32 offset)

		static void set_isdb_breakpoint_registers(struct kgsl_device *device)
		{
		struct clk *clk;
		int ret;

		if (!device->set_isdb_breakpoint \|\| device->ftbl->is_hwcg_on(device)
		\|\| device->qdss_gfx_virt == NULL)
		return;

		clk = clk_get(&device->pdev->dev, "apb_pclk");

		if (IS_ERR(clk)) {
		dev_err(device->dev, "Unable to get QDSS clock\n");
		goto err;
		}

		ret = clk_prepare_enable(clk);

		if (ret) {
		dev_err(device->dev, "QDSS Clock enable error: %d\n", ret);
		clk_put(clk);
		goto err;
		}

		/* Issue break command for all six SPs */
		isdb_write(device->qdss_gfx_virt, 0x0000);
		isdb_write(device->qdss_gfx_virt, 0x1000);
		@@ -629,6 +647,15 @@ static void set_isdb_breakpoint_registers(struct kgsl_device *device)
		isdb_write(device->qdss_gfx_virt, 0x3000);
		isdb_write(device->qdss_gfx_virt, 0x4000);
		isdb_write(device->qdss_gfx_virt, 0x5000);

		clk_disable_unprepare(clk);
		clk_put(clk);

		return;

		err:
		/* Do not force kernel panic if isdb writes did not go through */
		device->force_panic = false;
		}

		/**