On Wed, Feb 25, 2015 at 01:25:08PM +0100, Lukasz Majewski wrote:

Hi Eduardo,

quoted

Hi Lukasz,

On Wed, Feb 25, 2015 at 2:33 PM, Lukasz Majewski
[off-list ref] wrote:

quoted

Hi Abhilash,

quoted

This patch fixes the wrong control of PD_DET_EN (power down
detection mode) for Exynos7 because exynos7_tmu_control() always
enables the power down detection mode regardless 'on' parameter.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
---
 drivers/thermal/samsung/exynos_tmu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c

b/drivers/thermal/samsung/exynos_tmu.c index 933cd80..a60f527
100644 --- a/drivers/thermal/samsung/exynos_tmu.c

+++ b/drivers/thermal/samsung/exynos_tmu.c

@@ -682,6 +682,7 @@ static void exynos7_tmu_control(struct

platform_device *pdev, bool on)
      if (on) {
              con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
+             con |= (1 << EXYNOS7_PD_DET_EN_SHIFT);
              interrupt_en =
                      (of_thermal_is_trip_valid(tz, 7)
                      << EXYNOS7_TMU_INTEN_RISE7_SHIFT) |

@@ -704,9 +705,9 @@ static void exynos7_tmu_control(struct

platform_device *pdev, bool on) interrupt_en <<
EXYNOS_TMU_INTEN_FALL0_SHIFT; } else {
              con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
+             con &= ~(1 << EXYNOS7_PD_DET_EN_SHIFT);
              interrupt_en = 0; /* Disable all interrupts */
      }
-     con |= 1 << EXYNOS7_PD_DET_EN_SHIFT;

      writel(interrupt_en, data->base + EXYNOS7_TMU_REG_INTEN);
      writel(con, data->base + EXYNOS_TMU_REG_CONTROL);

Could you test this patch if it isn't introducing any regression on
your HW?

The patch does not cause any regression on exynos7 and seems
logically correct.

Tested-by: Abhilash Kesavan <redacted>

Eduardo, it is up to you if you prefer to take this fix directly or via
the new thermal-samsung tree ?

From when shall I regard myself as a maintainer? :-)

Yeah. Go ahead and collect it.

quoted

Regards,
Abhilash

quoted

--
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group

-- 
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 473 bytes
Desc: Digital signature
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20150225/ecc22b37/attachment.sig>