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Commit 4fcfc3d9 authored by Junjie Wu's avatar Junjie Wu
Browse files

gdsc: Dump GDSC register state if operations time out 



Dump GDSC register state if any of GDSC related operations time out.
This is necessary to debug GDSC issues when the register values
can't be recovered from ramdump.

Change-Id: I3175f9525ec6b72d3481919d490c767a056cbf05
Signed-off-by: default avatarJunjie Wu <junjiew@codeaurora.org>
parent 5f4d31f2

drivers/clk/qcom/gdsc.c

+9 −9
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.

 * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -83,8 +83,8 @@ static int gdsc_enable(struct regulator_dev *rdev) 
		ret = readl_tight_poll_timeout(sc->gdscr, regval,

					regval & PWR_ON_MASK, TIMEOUT_US);

		if (ret) {

			dev_err(&rdev->dev, "%s enable timed out\n",

				sc->rdesc.name);

			dev_err(&rdev->dev, "%s enable timed out: 0x%x\n",

				sc->rdesc.name, regval);

			return ret;

		}

	} else {
@@ -139,8 +139,8 @@ static int gdsc_disable(struct regulator_dev *rdev) 
					       !(regval & PWR_ON_MASK),

						TIMEOUT_US);

		if (ret)

			dev_err(&rdev->dev, "%s disable timed out\n",

				sc->rdesc.name);

			dev_err(&rdev->dev, "%s disable timed out: 0x%x\n",

				sc->rdesc.name, regval);

	} else {

		for (i = sc->clock_count-1; i >= 0; i--)

			clk_reset(sc->clocks[i], CLK_RESET_ASSERT);
@@ -212,8 +212,8 @@ static int gdsc_set_mode(struct regulator_dev *rdev, unsigned int mode) 
		ret = readl_tight_poll_timeout(sc->gdscr, regval,

					regval & PWR_ON_MASK, TIMEOUT_US);

		if (ret) {

			dev_err(&rdev->dev, "%s set_mode timed out\n",

				sc->rdesc.name);

			dev_err(&rdev->dev, "%s set_mode timed out: 0x%x\n",

				sc->rdesc.name, regval);

			return ret;

		}

		break;
@@ -334,8 +334,8 @@ static int gdsc_probe(struct platform_device *pdev) 
		ret = readl_tight_poll_timeout(sc->gdscr, regval,

					regval & PWR_ON_MASK, TIMEOUT_US);

		if (ret) {

			dev_err(&pdev->dev, "%s enable timed out\n",

				sc->rdesc.name);

			dev_err(&pdev->dev, "%s enable timed out: 0x%x\n",

				sc->rdesc.name, regval);

			return ret;

		}

	}