From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
To: thierry.reding@gmail.com
Cc: u.kleine-koenig@pengutronix.de, matthias.bgg@gmail.com,
weiqing.kong@mediatek.com, jitao.shi@mediatek.com,
linux-pwm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
kernel@collabora.com,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Subject: [PATCH 0/2] pwm: mtk-disp: Fix backlight configuration at boot
Date: Mon, 23 Jan 2023 17:06:13 +0100 [thread overview]
Message-ID: <20230123160615.375969-1-angelogioacchino.delregno@collabora.com> (raw)
Since the pwm-mtk-disp driver was fixed to get PWM_EN state from the
right register, an old two-wrongs-make-one-right issue emerged: as a
result, MT8192 Asurada Spherion got no backlight at boot unless a
suspend/resume cycle was performed.
Also, the backlight would sometimes not get updated with the requested
value, requiring the user to change it back and forth until it worked.
This series fixes both of the aforementioned issues found on MT8192.
AngeloGioacchino Del Regno (2):
pwm: mtk-disp: Disable shadow registers before setting backlight
values
pwm: mtk-disp: Configure double buffering before reading in
.get_state()
drivers/pwm/pwm-mtk-disp.c | 34 +++++++++++++++++++++++-----------
1 file changed, 23 insertions(+), 11 deletions(-)
--
2.39.0
next reply other threads:[~2023-01-23 16:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-23 16:06 AngeloGioacchino Del Regno [this message]
2023-01-23 16:06 ` [PATCH 1/2] pwm: mtk-disp: Disable shadow registers before setting backlight values AngeloGioacchino Del Regno
2023-01-26 15:06 ` Nícolas F. R. A. Prado
2023-01-26 15:20 ` AngeloGioacchino Del Regno
2023-01-23 16:06 ` [PATCH 2/2] pwm: mtk-disp: Configure double buffering before reading in .get_state() AngeloGioacchino Del Regno
2023-01-26 15:19 ` Nícolas F. R. A. Prado
2023-01-26 15:24 ` AngeloGioacchino Del Regno
2023-01-26 16:09 ` Nícolas F. R. A. Prado
2023-01-26 16:16 ` AngeloGioacchino Del Regno
2023-01-26 15:31 ` [PATCH 0/2] pwm: mtk-disp: Fix backlight configuration at boot Adrian Ratiu
2023-02-23 14:16 ` AngeloGioacchino Del Regno
2023-03-08 11:46 ` AngeloGioacchino Del Regno
2023-03-08 14:50 ` Greg Kroah-Hartman
2023-03-08 14:55 ` AngeloGioacchino Del Regno
2023-03-08 15:43 ` Greg Kroah-Hartman
2023-03-08 16:04 ` AngeloGioacchino Del Regno
2023-03-08 16:07 ` Uwe Kleine-König
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