From: Guru Das Srinagesh <gurus@codeaurora.org>
To: Guenter Roeck <linux@roeck-us.net>
Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
linux-pwm@vger.kernel.org,
"Thierry Reding" <thierry.reding@gmail.com>,
"Subbaraman Narayanamurthy" <subbaram@codeaurora.org>,
linux-kernel@vger.kernel.org, "Kamil Debski" <kamil@wypas.org>,
"Bartlomiej Zolnierkiewicz" <b.zolnierkie@samsung.com>,
"Jean Delvare" <jdelvare@suse.com>,
"Liam Girdwood" <lgirdwood@gmail.com>,
"Mark Brown" <broonie@kernel.org>,
linux-hwmon@vger.kernel.org
Subject: Re: [PATCH v7 03/13] hwmon: pwm-fan: Use 64-bit division macros for period and duty cycle
Date: Tue, 10 Mar 2020 15:24:18 -0700 [thread overview]
Message-ID: <20200310222418.GA8053@codeaurora.org> (raw)
In-Reply-To: <bd6c7679-9569-2cf1-1664-61bf368d82dd@roeck-us.net>
On Tue, Mar 10, 2020 at 08:05:58AM -0700, Guenter Roeck wrote:
> I don't see support in the LED subsystem to utilize the PWM framework directly
> for blinking. Plus, you say yourself that it isn't a _real_ use case, just a
> theoretic one.
An example use case is a mobile phone OEM that wishes to set a period of
5 seconds or more for, say, a low battery slow blinking indication - currently
this is not possible. The PWM framework not having direct support for
blinking should not be a concern if the PWM peripheral being controlled
supports it via register writes.
> Either case, the reason / use case for this series should be explained
> in the summary patch. That is what it is for. That case is not made.
Will upload a new patchset adding more details in the summary patch.
Thank you.
Guru Das.
next prev parent reply other threads:[~2020-03-10 22:24 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-09 19:35 [PATCH v7 00/13] Convert period and duty cycle to u64 Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 01/13] clk: pwm: Use 64-bit division macros for period and duty cycle Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 02/13] drm/i915: " Guru Das Srinagesh
2020-03-09 19:35 ` [Intel-gfx] " Guru Das Srinagesh
2020-03-09 19:35 ` Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 03/13] hwmon: pwm-fan: " Guru Das Srinagesh
2020-03-09 21:48 ` Guenter Roeck
2020-03-10 12:08 ` Uwe Kleine-König
2020-03-10 15:05 ` Guenter Roeck
2020-03-10 22:24 ` Guru Das Srinagesh [this message]
2020-03-10 22:57 ` Guenter Roeck
2020-03-09 19:35 ` [PATCH v7 04/13] ir-rx51: " Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 05/13] pwm: clps711x: " Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 06/13] pwm: pwm-imx-tpm: " Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 07/13] pwm: imx27: " Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 08/13] pwm: sifive: " Guru Das Srinagesh
2020-03-09 19:35 ` Guru Das Srinagesh
2020-03-26 16:37 ` Palmer Dabbelt
2020-03-26 16:37 ` Palmer Dabbelt
2020-03-26 16:37 ` Palmer Dabbelt
2020-03-09 19:35 ` [PATCH v7 09/13] pwm: sti: " Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 10/13] pwm: stm32-lp: Use %llu format specifier for period Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 11/13] pwm: sun4i: Use 64-bit division macros for period and duty cycle Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 12/13] backlight: pwm_bl: " Guru Das Srinagesh
2020-03-09 19:35 ` Guru Das Srinagesh
2020-03-09 19:35 ` Guru Das Srinagesh
2020-03-10 14:34 ` Daniel Thompson
2020-03-10 14:34 ` Daniel Thompson
2020-03-10 14:34 ` Daniel Thompson
2020-03-10 18:12 ` Guru Das Srinagesh
2020-03-10 18:12 ` Guru Das Srinagesh
2020-03-10 18:12 ` Guru Das Srinagesh
2020-03-09 19:35 ` [PATCH v7 13/13] pwm: core: Convert period and duty cycle to u64 Guru Das Srinagesh
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