From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: linux-pwm@vger.kernel.org,
Neil Armstrong <narmstrong@baylibre.com>,
linux-kernel@vger.kernel.org, thierry.reding@gmail.com,
linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 03/14] pwm: meson: use GENMASK and FIELD_PREP for the lo and hi values
Date: Tue, 11 Jun 2019 17:38:08 +0200 [thread overview]
Message-ID: <20190611153808.oljoea7ohzpm26zy@pengutronix.de> (raw)
In-Reply-To: <20190608180626.30589-4-martin.blumenstingl@googlemail.com>
On Sat, Jun 08, 2019 at 08:06:15PM +0200, Martin Blumenstingl wrote:
> meson_pwm_calc() ensures that "lo" is always less than 16 bits wide
> (otherwise it would overflow into the "hi" part of the REG_PWM_{A,B}
> register).
> Use GENMASK and FIELD_PREP for the lo and hi values to make it easier to
> spot how wide these are internally. Additionally this is a preparation
> step for the .get_state() implementation where the GENMASK() for lo and
> hi becomes handy because it can be used with FIELD_GET() to extract the
> values from the register REG_PWM_{A,B} register.
>
> No functional changes intended.
>
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2019-06-11 15:38 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-08 18:06 [PATCH v2 00/14] pwm-meson: cleanups and improvements Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 01/14] pwm: meson: unify the parameter list of meson_pwm_{enable, disable} Martin Blumenstingl
2019-06-11 15:29 ` [PATCH v2 01/14] pwm: meson: unify the parameter list of meson_pwm_{enable,disable} Uwe Kleine-König
2019-06-08 18:06 ` [PATCH v2 02/14] pwm: meson: use devm_clk_get_optional() to get the input clock Martin Blumenstingl
2019-06-11 15:37 ` Uwe Kleine-König
2019-06-08 18:06 ` [PATCH v2 03/14] pwm: meson: use GENMASK and FIELD_PREP for the lo and hi values Martin Blumenstingl
2019-06-11 15:38 ` Uwe Kleine-König [this message]
2019-06-08 18:06 ` [PATCH v2 04/14] pwm: meson: change MISC_CLK_SEL_WIDTH to MISC_CLK_SEL_MASK Martin Blumenstingl
2019-06-11 16:33 ` Uwe Kleine-König
2019-06-12 19:47 ` Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 05/14] pwm: meson: don't duplicate the polarity internally Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 06/14] pwm: meson: pass struct pwm_device to meson_pwm_calc() Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 07/14] pwm: meson: add the meson_pwm_channel data to struct meson_pwm Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 08/14] pwm: meson: add the per-channel register offsets and bits in a struct Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 09/14] pwm: meson: move pwm_set_chip_data() to meson_pwm_request() Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 10/14] pwm: meson: simplify the calculation of the pre-divider and count Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 11/14] pwm: meson: read the full hardware state in meson_pwm_get_state() Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 12/14] pwm: meson: don't cache struct pwm_state internally Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 13/14] pwm: meson: add support PWM_POLARITY_INVERSED when disabling Martin Blumenstingl
2019-06-08 18:06 ` [PATCH v2 14/14] pwm: meson: add documentation to the driver Martin Blumenstingl
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