From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Marek Behun <marek.behun@nic.cz>
Cc: Robin van der Gracht <robin@protonic.nl>,
Rob Herring <robh+dt@kernel.org>, Miguel Ojeda <ojeda@kernel.org>,
Paul Burton <paulburton@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Pavel Machek <pavel@ucw.cz>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
linux-leds <linux-leds@vger.kernel.org>,
"open list:BROADCOM NVRAM DRIVER" <linux-mips@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 18/18] auxdisplay: ht16k33: Add segment display LED support
Date: Mon, 28 Jun 2021 11:21:08 +0200 [thread overview]
Message-ID: <CAMuHMdXYLkoS7hTi1OZx7PMSCcfAR9YviJMN-x_dWpbz5KW+JA@mail.gmail.com> (raw)
In-Reply-To: <20210625224001.115c938a@thinkpad>
Hi Marek,
On Fri, Jun 25, 2021 at 10:40 PM Marek Behun <marek.behun@nic.cz> wrote:
> On Fri, 25 Jun 2021 22:39:16 +0200
> Marek Behun <marek.behun@nic.cz> wrote:
> > On Fri, 25 Jun 2021 14:59:02 +0200
> > Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> > > Instantiate a single LED for a segment display. This allows the user to
> > > control display brightness and blinking through the LED class API and
> > > triggers, and exposes the display color.
> > > The LED will be named "auxdisplay:<color>:backlight".
> >
> > What if there are multiple "auxdisplay"s ?
> > Doesn't this subsystem have IDs? So that you can use auxdisplayN for
> > device name, for example?
>
> Or if this driver creates a fbdev, maybe "fb<N>" for devicename?
This LED device is only registered when using the HT16K33 to drive
segment displays.
When driving a dot matrix display, the driver still use fbdev and
devm_backlight_device_register(), for backwards compatibility.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2021-06-28 9:21 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-25 12:58 [PATCH v2 00/18] auxdisplay: ht16k33: Add character display support Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 01/18] uapi: Add <linux/map_to_14segment.h> Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 02/18] dt-bindings: auxdisplay: ht16k33: Document Adafruit segment displays Geert Uytterhoeven
2021-07-14 20:36 ` Rob Herring
2021-07-15 7:12 ` Geert Uytterhoeven
2021-07-15 14:32 ` Rob Herring
2021-07-15 15:06 ` Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 03/18] auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 04/18] auxdisplay: img-ascii-lcd: Add helper variable dev Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 05/18] auxdisplay: img-ascii-lcd: Convert device attribute to sysfs_emit() Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 06/18] auxdisplay: Extract character line display core support Geert Uytterhoeven
2021-06-25 23:35 ` kernel test robot
2021-06-25 23:35 ` kernel test robot
2021-06-28 10:17 ` Geert Uytterhoeven
2021-06-28 10:17 ` Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 07/18] auxdisplay: linedisp: Use kmemdup_nul() helper Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 08/18] auxdisplay: linedisp: Add support for changing scroll rate Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 09/18] auxdisplay: ht16k33: Connect backlight to fbdev Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 10/18] auxdisplay: ht16k33: Use HT16K33_FB_SIZE in ht16k33_initialize() Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 11/18] auxdisplay: ht16k33: Remove unneeded error check in keypad probe() Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 12/18] auxdisplay: ht16k33: Convert to simple i2c probe function Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 13/18] auxdisplay: ht16k33: Add helper variable dev Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 14/18] auxdisplay: ht16k33: Move delayed work Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 15/18] auxdisplay: ht16k33: Extract ht16k33_brightness_set() Geert Uytterhoeven
2021-06-25 12:59 ` [PATCH v2 16/18] auxdisplay: ht16k33: Extract frame buffer probing Geert Uytterhoeven
2021-06-25 12:59 ` [PATCH v2 17/18] auxdisplay: ht16k33: Add support for segment displays Geert Uytterhoeven
2021-06-25 12:59 ` [PATCH v2 18/18] auxdisplay: ht16k33: Add segment display LED support Geert Uytterhoeven
2021-06-25 20:39 ` Marek Behun
2021-06-25 20:40 ` Marek Behun
2021-06-28 9:21 ` Geert Uytterhoeven [this message]
2021-06-28 9:21 ` Geert Uytterhoeven
2021-06-28 10:15 ` Marek Behun
2021-06-28 15:33 ` Geert Uytterhoeven
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