From: Eduardo Valentin <edubezval@gmail.com>
To: Amit Kucheria <amit.kucheria@linaro.org>
Cc: linux-kernel@vger.kernel.org, rnayak@codeaurora.org,
linux-arm-msm@vger.kernel.org, bjorn.andersson@linaro.org,
smohanad@codeaurora.org, andy.gross@linaro.org,
dianders@chromium.org, mka@chromium.org,
Zhang Rui <rui.zhang@intel.com>,
linux-pm@vger.kernel.org
Subject: Re: [PATCH v1 07/10] thermal: tsens: Check if the IP is correctly enabled by firmware
Date: Fri, 24 Aug 2018 16:30:41 -0700 [thread overview]
Message-ID: <20180824233039.GF25163@localhost.localdomain> (raw)
In-Reply-To: <985ed415774fdac9ac21afad4b4b74f30f6c5068.1533815718.git.amit.kucheria@linaro.org>
On Thu, Aug 09, 2018 at 06:02:39PM +0530, Amit Kucheria wrote:
> The SROT registers are initialised by the secure firmware at boot. We
> don't have write access to the registers. Check if the block is enabled
> before continuing.
>
Should this be merged to patch 6?
> Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
> ---
> drivers/thermal/qcom/tsens-common.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c
> index 0b8a793f15f4..d250b757d1f0 100644
> --- a/drivers/thermal/qcom/tsens-common.c
> +++ b/drivers/thermal/qcom/tsens-common.c
> @@ -12,6 +12,11 @@
> #include <linux/regmap.h>
> #include "tsens.h"
>
> +/* SROT */
> +#define CTRL_OFFSET 0x4
> +#define TSENS_EN BIT(0)
> +
> +/* TM */
> #define STATUS_OFFSET 0x30
> #define SN_ADDR_OFFSET 0x4
> #define SN_ST_TEMP_MASK 0x3ff
> @@ -119,6 +124,8 @@ int __init init_common(struct tsens_device *tmdev)
> {
> void __iomem *tm_base, *srot_base;
> struct resource *res;
> + u32 code;
> + int ret;
> struct platform_device *op = of_find_device_by_node(tmdev->dev->of_node);
>
> if (!op)
> @@ -151,5 +158,15 @@ int __init init_common(struct tsens_device *tmdev)
> if (IS_ERR(tmdev->tm_map))
> return PTR_ERR(tmdev->tm_map);
>
> + if (tmdev->srot_map) {
> + ret = regmap_read(tmdev->srot_map, CTRL_OFFSET, &code);
> + if (ret)
> + return ret;
> + if (!(code & TSENS_EN)) {
> + dev_err(tmdev->dev, "tsens device is not enabled\n");
> + return -ENODEV;
> + }
> + }
> +
> return 0;
> }
> --
> 2.17.1
>
next prev parent reply other threads:[~2018-08-24 23:30 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-09 12:32 [PATCH v1 00/10] Another round of tsens cleanups Amit Kucheria
2018-08-09 12:32 ` [PATCH v1 01/10] arm/arm64: dts: msm8974/msm8916: thermal: Split address space into two Amit Kucheria
2018-08-09 19:10 ` Matthias Kaehlcke
2018-08-10 4:50 ` Amit Kucheria
2018-08-24 23:21 ` Eduardo Valentin
2018-08-24 23:27 ` Eduardo Valentin
2018-08-27 12:54 ` Amit Kucheria
2018-08-09 12:32 ` [PATCH v1 02/10] dt-bindings: thermal: Fix a typo in documentation Amit Kucheria
2018-08-09 19:16 ` Matthias Kaehlcke
2018-08-13 21:49 ` Rob Herring
2018-08-24 23:24 ` Eduardo Valentin
2018-08-31 8:14 ` Daniel Lezcano
2018-08-09 12:32 ` [PATCH v1 03/10] thermal: tsens: Add SPDX license identifiers Amit Kucheria
2018-08-09 19:19 ` Matthias Kaehlcke
2018-08-09 12:32 ` [PATCH v1 04/10] thermal: tsens: Get rid of dead code Amit Kucheria
2018-08-09 19:23 ` Matthias Kaehlcke
2018-08-09 12:32 ` [PATCH v1 05/10] thermal: tsens: Rename map field in order to add a second address map Amit Kucheria
2018-08-09 19:32 ` Matthias Kaehlcke
2018-08-09 12:32 ` [PATCH v1 06/10] thermal: tsens: Add the SROT " Amit Kucheria
2018-08-09 19:46 ` Matthias Kaehlcke
2018-08-09 12:32 ` [PATCH v1 07/10] thermal: tsens: Check if the IP is correctly enabled by firmware Amit Kucheria
2018-08-09 20:37 ` Matthias Kaehlcke
2018-08-24 23:30 ` Eduardo Valentin [this message]
2018-08-27 13:04 ` Amit Kucheria
2018-08-09 12:32 ` [PATCH v1 08/10] thermal: tsens: Get rid of 'id' field Amit Kucheria
2018-08-09 20:55 ` Matthias Kaehlcke
2018-08-09 12:32 ` [PATCH v1 09/10] arm64: dts: qcom: Add reg-names for all tsens nodes Amit Kucheria
2018-08-09 21:05 ` Matthias Kaehlcke
2018-08-09 12:32 ` [PATCH v1 10/10] MAINTAINERS: Add entry for Qualcomm TSENS thermal drivers Amit Kucheria
2018-08-09 21:08 ` Matthias Kaehlcke
2018-08-14 5:11 ` Rajendra Nayak
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