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| author | Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2014-10-24 16:24:53 +0900 |
|---|---|---|
| committer | Chanho Park <chanho61.park@samsung.com> | 2014-11-18 12:01:06 +0900 |
| commit | 1928bb002a2154a7b7a6a105ba1d65a36a7f0263 (patch) | |
| tree | 526c44055e4e0411f7a90f41d1beb75f9688c312 /net/rds | |
| parent | 9292ba6e397fe426a2a91d3526394f9054fc4d8c (diff) | |
| download | linux-3.10-1928bb002a2154a7b7a6a105ba1d65a36a7f0263.tar.gz linux-3.10-1928bb002a2154a7b7a6a105ba1d65a36a7f0263.tar.bz2 linux-3.10-1928bb002a2154a7b7a6a105ba1d65a36a7f0263.zip | |
drm/panel: s6e63j0x03: Fix uninitialized power state
Fix following DSI panel enable error (booted init=/bin/sh):
echo 0 > /sys/devices/platform/exynos-drm/graphics/fb0/blank
[ 55.708859] exynos-dsi 11c80000.dsi: PLL input frequency: 24000000
[ 55.709038] exynos-dsi 11c80000.dsi: PLL freq 250000000, (p 3, m 125, s 2)
[ 55.709107] exynos-dsi 11c80000.dsi: band 4
[ 55.709929] exynos-dsi 11c80000.dsi: PLL failed to stabilize
[ 55.709987] exynos-dsi 11c80000.dsi: failed to configure DSI PLL
[ 56.007706] exynos-dsi 11c80000.dsi: timeout waiting for reset
[ 56.030676] exynos-dsi 11c80000.dsi: waiting for bus lanes timed out
[ 56.030804] exynos-dsi 11c80000.dsi: < xfer df45fda8: tx len 3, done 0, rx len 0, done 0
[ 56.127024] exynos-dsi 11c80000.dsi: xfer timed out: 03 00 f1 5a 5a
[ 56.127125] panel_s6e63j0x03 11c80000.dsi.0: failed to dcs write: -110[f1 5a 5a]
The panel power state was initialized by devm_kzalloc() to 0 which means
FB_BLANK_UNBLANK. Request to unblank frame buffer from sysfs was
triggering a call to panel set_brightness(). This lead to starting DSI
transfers on disabled DSI/panel (no calls to exynos_dsi_enable, s6e63j0x03_prepare,
s6e63j0x03_enable)
Change-Id: I146d46c92c96112a6c616daf83edc57c5b889902
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'net/rds')
0 files changed, 0 insertions, 0 deletions