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
WARNING: multiple messages have this Message-ID (diff)
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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2023-01-23 16:06 UTC|newest] Thread overview: 34+ 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 0/2] pwm: mtk-disp: Fix backlight configuration at boot AngeloGioacchino Del Regno 2023-01-23 16:06 ` [PATCH 1/2] pwm: mtk-disp: Disable shadow registers before setting backlight values AngeloGioacchino Del Regno 2023-01-23 16:06 ` AngeloGioacchino Del Regno 2023-01-26 15:06 ` Nícolas F. R. A. Prado 2023-01-26 15:06 ` Nícolas F. R. A. Prado 2023-01-26 15:20 ` AngeloGioacchino Del Regno 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 2023-01-23 16:06 ` AngeloGioacchino Del Regno 2023-01-26 15:19 ` Nícolas F. R. A. Prado 2023-01-26 15:19 ` Nícolas F. R. A. Prado 2023-01-26 15:24 ` AngeloGioacchino Del Regno 2023-01-26 15:24 ` AngeloGioacchino Del Regno 2023-01-26 16:09 ` Nícolas F. R. A. Prado 2023-01-26 16:09 ` Nícolas F. R. A. Prado 2023-01-26 16:16 ` AngeloGioacchino Del Regno 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 2023-01-26 15:31 ` Adrian Ratiu 2023-02-23 14:16 ` AngeloGioacchino Del Regno 2023-02-23 14:16 ` AngeloGioacchino Del Regno 2023-03-08 11:46 ` AngeloGioacchino Del Regno 2023-03-08 11:46 ` AngeloGioacchino Del Regno 2023-03-08 14:50 ` Greg Kroah-Hartman 2023-03-08 14:50 ` Greg Kroah-Hartman 2023-03-08 14:55 ` AngeloGioacchino Del Regno 2023-03-08 14:55 ` AngeloGioacchino Del Regno 2023-03-08 15:43 ` Greg Kroah-Hartman 2023-03-08 15:43 ` Greg Kroah-Hartman 2023-03-08 16:04 ` AngeloGioacchino Del Regno 2023-03-08 16:04 ` AngeloGioacchino Del Regno 2023-03-08 16:07 ` Uwe Kleine-König 2023-03-08 16:07 ` Uwe Kleine-König
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