From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Jonathan Richardson <jonathar@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>,
Grant Likely <grant.likely@linaro.org>,
Rob Herring <robh+dt@kernel.org>, Ray Jui <rjui@broadcom.com>,
linux-kernel@vger.kernel.org, linux-input@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
bcm-kernel-feedback-list@broadcom.com,
devicetree@vger.kernel.org, Joe Perches <joe@perches.com>,
Hans de Goede <hdegoede@redhat.com>
Subject: Re: [PATCH v2 1/2] Input: touchscreen-iproc: Add Broadcom iProc touchscreen driver
Date: Tue, 24 Feb 2015 15:18:44 -0800 [thread overview]
Message-ID: <20150224231844.GA39158@dtor-ws> (raw)
In-Reply-To: <54DBA34E.8090400@broadcom.com>
Jonathan,
On Wed, Feb 11, 2015 at 10:45:34AM -0800, Jonathan Richardson wrote:
> Pinging maintainers... Am I ok to go ahead with the current rotation
> implementation? I haven't heard anything further. Any feedback on naming
> conventions from DT people?
>
I believe we should go with touchscreen-inverted-x,
touchscreen-inverted-y and touchscreen-swapped-x-y properties since
rotation can't really describe all permutations of potential
connections.
I'll be taking Hans de Goede's patch adding this new property to the
bindings (adjusting the name slightly).
Thanks.
> Thanks!
>
> On 15-01-15 11:51 AM, Jonathan Richardson wrote:
> > Hi Dmitry,
> >
> > On 15-01-14 10:07 PM, Dmitry Torokhov wrote:
> >> On Wed, Jan 14, 2015 at 09:44:39PM -0800, Scott Branden wrote:
> >>> On 15-01-14 05:02 PM, Dmitry Torokhov wrote:
> >>>> Hi Jonathan,
> >>>>
> >>>> On Fri, Dec 19, 2014 at 02:17:49PM -0800, Jonathan Richardson wrote:
> >>>>> + if (of_property_read_u32(np, "scanning_period", &val) >= 0) {
> >>>>> + if (val < 1 || val > 256) {
> >>>>> + dev_err(dev, "scanning_period must be [1-256]\n");
> >>>>> + return -EINVAL;
> >>>>> + }
> >>>>> + priv->cfg_params.scanning_period = val;
> >>>>> + }
> >>>>> +
> >>>>> + if (of_property_read_u32(np, "debounce_timeout", &val) >= 0) {
> >>>>> + if (val < 0 || val > 255) {
> >>>>> + dev_err(dev, "debounce_timeout must be [0-255]\n");
> >>>>> + return -EINVAL;
> >>>>> + }
> >>>>> + priv->cfg_params.debounce_timeout = val;
> >>>>> + }
> >>>>> +
> >>>>> + if (of_property_read_u32(np, "settling_timeout", &val) >= 0) {
> >>>>> + if (val < 0 || val > 11) {
> >>>>> + dev_err(dev, "settling_timeout must be [0-11]\n");
> >>>>> + return -EINVAL;
> >>>>> + }
> >>>>> + priv->cfg_params.settling_timeout = val;
> >>>>> + }
> >>>>> +
> >>>>> + if (of_property_read_u32(np, "touch_timeout", &val) >= 0) {
> >>>>> + if (val < 0 || val > 255) {
> >>>>> + dev_err(dev, "touch_timeout must be [0-255]\n");
> >>>>> + return -EINVAL;
> >>>>> + }
> >>>>> + priv->cfg_params.touch_timeout = val;
> >>>>> + }
> >>>>> +
> >>>>> + if (of_property_read_u32(np, "average_data", &val) >= 0) {
> >>>>> + if (val < 0 || val > 8) {
> >>>>> + dev_err(dev, "average_data must be [0-8]\n");
> >>>>> + return -EINVAL;
> >>>>> + }
> >>>>> + priv->cfg_params.average_data = val;
> >>>>> + }
> >>>>> +
> >>>>> + if (of_property_read_u32(np, "fifo_threshold", &val) >= 0) {
> >>>>> + if (val < 0 || val > 31) {
> >>>>> + dev_err(dev, "fifo_threshold must be [0-31]\n");
> >>>>> + return -EINVAL;
> >>>>> + }
> >>>>> + priv->cfg_params.fifo_threshold = val;
> >>>>> + }
> >>>>
> >>>> I think these are dveice specific and thus should have "brcm," prefix.
> >>> I'm confused as to why we need the brcm prefix? Other device tree
> >>> bindings we have for other drivers do not need such prefix.
> >>
> >> Properties that are not standard on the system (reg, interrupts,
> >> clkocks, etc) or subsystem level customarily carry the vendor prefix so
> >> that they do not clash with newly added global or subsystem properties.
> >>
> >>> Is this
> >>> convention documented somewhere?
> >>
> >> Not sure. I glanced through Documentation/devicetree and do not see it
> >> spelled out. Device tree overlords, what say you?
> >
> > Let me know. I haven't seen this before either. I will change the
> > entries to use dashes though instead of underscores but will wait until
> > these other issues are decided on before sending out another patch.
> >
> >>
> >>>>
> >>>>> +
> >>>>> + priv->ts_rotation = TS_ROTATION_0;
> >>>>> + if (of_property_read_u32(np, "ts-rotation", &val) >= 0) {
> >>>>> + priv->ts_rotation = val;
> >>>>> + dev_dbg(dev, "ts rotation [%d] degrees\n",
> >>>>> + 90 * priv->ts_rotation);
> >>>>> + }
> >>>>
> >>>> This I am not quite sure about - if we want rotation or swap+invert. You
> >>>> are CCed on another email (tsc2007) that talks about need of generic
> >>>> touchscreen transforms in input core/of bindings.
> >>> Does such generic binding exist today? If not, I would like to go
> >>> with this implementation and update to the new binding if/when it
> >>> exists?
> >>
> >> Not yet but there several people interested. I think we have enough time
> >> till 3.20 to hash it out properly.
> >
> > I think the rotation is simpler personally. Everyone would understand
> > rotation refers to how it's oriented but I'm not sure everyone would
> > immediately know how it is wired. Let me know what is decided and I'll
> > make any changes required.
> >
> > Thanks,
> > Jon
> >
> >
> >>
> >> Thanks.
> >>
> >
>
--
Dmitry
next prev parent reply other threads:[~2015-02-24 23:19 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Jonathan Richardson <jonathar@broadcom.com>
2014-09-16 19:58 ` [PATCH 0/6] Add initial support for Broadcom Cygnus SoC Jonathan Richardson
2014-09-16 19:58 ` [PATCH 1/6] ARM: cygnus: Initial " Jonathan Richardson
2014-09-17 0:00 ` Mark Rutland
2014-09-18 23:33 ` Jonathan Richardson
2014-09-16 19:58 ` [PATCH 2/6] clk: Clock driver " Jonathan Richardson
2014-09-17 0:47 ` Mark Rutland
2014-09-18 23:43 ` Jonathan Richardson
2014-09-16 19:58 ` [PATCH 3/6] dt-bindings: Document Broadcom Cygnus SoC and clock driver Jonathan Richardson
2014-09-16 19:58 ` [PATCH 4/6] ARM: dts: Enable Broadcom Cygnus SoC Jonathan Richardson
2014-09-16 19:58 ` [PATCH 5/6] ARM: cygnus defconfig : Initial defconfig for " Jonathan Richardson
2014-09-16 19:58 ` [PATCH 6/6] MAINTAINERS: Entry for Cygnus/iproc arm architecture and clock drivers Jonathan Richardson
2014-09-18 22:31 ` [PATCH 0/6] Add initial support for Broadcom Cygnus SoC Hauke Mehrtens
2014-09-18 22:39 ` Florian Fainelli
2014-09-18 22:54 ` Hauke Mehrtens
2014-09-19 0:58 ` Scott Branden
2014-09-23 21:17 ` [PATCH v2 " Jonathan Richardson
2014-09-23 21:17 ` [PATCH v2 1/6] ARM: cygnus: Initial " Jonathan Richardson
2014-09-23 21:17 ` [PATCH v2 2/6] clk: Clock driver " Jonathan Richardson
2014-09-23 21:17 ` [PATCH v2 3/6] dt-bindings: Document Broadcom Cygnus SoC and clock driver Jonathan Richardson
2014-09-23 21:17 ` [PATCH v2 4/6] ARM: dts: Enable Broadcom Cygnus SoC Jonathan Richardson
2014-09-23 21:17 ` [PATCH v2 5/6] ARM: cygnus defconfig : Initial defconfig for " Jonathan Richardson
2014-09-23 21:17 ` [PATCH v2 6/6] MAINTAINERS: Entry for Cygnus/iproc arm architecture and clock drivers Jonathan Richardson
2014-09-25 21:04 ` [PATCH v2 0/6] Add initial support for Broadcom Cygnus SoC Scott Branden
2014-09-25 21:22 ` Florian Fainelli
2014-09-26 0:14 ` Florian Fainelli
2014-09-26 0:28 ` Jonathan Richardson
2014-09-26 0:34 ` Florian Fainelli
2014-12-11 1:07 ` [PATCH v2 1/2] pwm: kona: Fix incorrect enable, config, and disable procedures Jonathan Richardson
2014-12-11 1:07 ` [PATCH v2 2/2] pwm: kona: Remove setting default smooth type and polarity for all channels Jonathan Richardson
2014-12-15 7:18 ` [PATCH v2 1/2] pwm: kona: Fix incorrect enable, config, and disable procedures Tim Kryger
2014-12-16 19:36 ` Jonathan Richardson
2014-12-17 18:46 ` [PATCH v3 " Jonathan Richardson
2014-12-17 18:46 ` [PATCH v3 2/2] pwm: kona: Remove setting default smooth type and polarity for all channels Jonathan Richardson
2014-12-20 22:38 ` [PATCH v3 1/2] pwm: kona: Fix incorrect enable, config, and disable procedures Tim Kryger
2014-12-22 22:49 ` Jonathan Richardson
2014-12-18 1:59 ` [PATCH 0/2] Add support for Broadcom iProc touchscreen Jonathan Richardson
2014-12-18 1:59 ` [PATCH 1/2] Input: touchscreen-iproc: Add Broadcom iProc touchscreen driver Jonathan Richardson
2014-12-18 2:14 ` Joe Perches
2014-12-19 19:51 ` Jonathan Richardson
2014-12-19 19:56 ` Dmitry Torokhov
2014-12-18 1:59 ` [PATCH 2/2] Input: touchscreen-iproc: add device tree bindings Jonathan Richardson
2014-12-19 22:17 ` [PATCH v2 0/2] Add support for Broadcom iProc touchscreen Jonathan Richardson
2014-12-19 22:17 ` [PATCH v2 1/2] Input: touchscreen-iproc: Add Broadcom iProc touchscreen driver Jonathan Richardson
2014-12-19 22:26 ` Joe Perches
2014-12-19 23:03 ` Jonathan Richardson
2015-01-01 0:55 ` Jonathan Richardson
2015-01-15 1:08 ` Florian Fainelli
2015-01-15 19:19 ` Jonathan Richardson
2015-01-15 1:02 ` Dmitry Torokhov
2015-01-15 5:44 ` Scott Branden
2015-01-15 6:07 ` Dmitry Torokhov
2015-01-15 19:51 ` Jonathan Richardson
2015-02-11 18:45 ` Jonathan Richardson
2015-02-24 23:18 ` Dmitry Torokhov [this message]
2015-02-27 1:02 ` Jonathan Richardson
2015-02-24 23:29 ` Dmitry Torokhov
2015-03-02 19:13 ` Jonathan Richardson
2014-12-19 22:17 ` [PATCH v2 2/2] Input: touchscreen-iproc: add device tree bindings Jonathan Richardson
2014-12-30 22:43 ` [PATCH v4 0/3] Fix bugs in kona pwm driver and pwm core Jonathan Richardson
2014-12-30 22:43 ` [PATCH v4 1/3] pwm: kona: Fix incorrect config, disable, and polarity procedures Jonathan Richardson
2014-12-30 22:43 ` [PATCH v4 2/3] pwm: kona: Remove setting default smooth type and polarity for all channels Jonathan Richardson
2015-01-05 1:12 ` Tim Kryger
2015-01-05 1:33 ` Tim Kryger
2014-12-30 22:43 ` [PATCH v4 3/3] pwm: core: Set enable state properly on failed call to enable Jonathan Richardson
2015-01-07 19:42 ` [PATCH v5 0/2] Fix bugs in kona pwm driver and pwm core Jonathan Richardson
2015-01-07 19:42 ` [PATCH v5 1/2] pwm: kona: Fix incorrect config, disable, and polarity procedures Jonathan Richardson
2015-01-07 19:42 ` [PATCH v5 2/2] pwm: core: Set enable state properly on failed call to enable Jonathan Richardson
2015-02-11 23:59 ` Dmitry Torokhov
2015-02-24 19:13 ` [PATCH 0/1] Enable Broadcom Cygnus BCM958305K Jonathan Richardson
2015-02-24 19:13 ` [PATCH 1/1] ARM: dts: " Jonathan Richardson
2015-02-25 19:04 ` [PATCH 0/1] Synopsis 8250 serial port driver fix Jonathan Richardson
2015-02-25 19:04 ` [PATCH 1/1] serial: 8250_dw: Fix get_mctrl behaviour Jonathan Richardson
2015-02-25 19:21 ` Arnd Bergmann
2015-02-25 20:00 ` Jonathan Richardson
2015-02-25 20:07 ` Arnd Bergmann
2015-02-27 0:35 ` [PATCH v2 0/1] Synopsis 8250 serial port driver fix Jonathan Richardson
2015-02-27 0:35 ` [PATCH v2 1/1] serial: 8250_dw: Fix get_mctrl behaviour Jonathan Richardson
2015-03-09 18:40 ` Dmitry Torokhov
2015-03-09 18:51 ` Jonathan Richardson
2015-03-02 22:41 ` [PATCH RESEND 0/1] Enable Broadcom Cygnus BCM958305K Jonathan Richardson
2015-03-02 22:41 ` [PATCH RESEND 1/1] ARM: dts: " Jonathan Richardson
2015-03-02 23:45 ` Florian Fainelli
2015-03-11 1:17 ` [PATCH v3 0/2] Add support for Broadcom iProc touchscreen Jonathan Richardson
2015-03-11 1:17 ` [PATCH v3 1/2] Input: touchscreen-iproc: Add Broadcom iProc touchscreen driver Jonathan Richardson
2015-03-11 9:46 ` Paul Bolle
2015-03-11 17:05 ` Jonathan Richardson
2015-03-11 1:17 ` [PATCH v3 2/2] Input: touchscreen-iproc: add device tree bindings Jonathan Richardson
2015-03-12 17:45 ` [PATCH v4 0/2] Add support for Broadcom iProc touchscreen Jonathan Richardson
2015-03-12 17:45 ` [PATCH v4 1/2] Input: touchscreen-iproc: Add Broadcom iProc touchscreen driver Jonathan Richardson
2015-03-12 17:59 ` Joe Perches
2015-03-12 22:44 ` Jonathan Richardson
2015-03-12 17:45 ` [PATCH v4 2/2] Input: touchscreen-iproc: add device tree bindings Jonathan Richardson
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