From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B979C433F4 for ; Fri, 31 Aug 2018 09:11:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4942C20837 for ; Fri, 31 Aug 2018 09:11:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4942C20837 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727801AbeHaNSL (ORCPT ); Fri, 31 Aug 2018 09:18:11 -0400 Received: from mail.bootlin.com ([62.4.15.54]:33814 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727292AbeHaNSL (ORCPT ); Fri, 31 Aug 2018 09:18:11 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id A976A207AD; Fri, 31 Aug 2018 11:11:38 +0200 (CEST) Received: from localhost (AAubervilliers-681-1-92-107.w90-88.abo.wanadoo.fr [90.88.33.107]) by mail.bootlin.com (Postfix) with ESMTPSA id 7A635206EE; Fri, 31 Aug 2018 11:11:38 +0200 (CEST) Date: Fri, 31 Aug 2018 11:11:37 +0200 From: Maxime Ripard To: Philipp Rossak Cc: lee.jones@linaro.org, robh+dt@kernel.org, mark.rutland@arm.com, wens@csie.org, linux@armlinux.org.uk, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, eugen.hristev@microchip.com, rdunlap@infradead.org, vilhelm.gray@gmail.com, clabbe.montjoie@gmail.com, quentin.schulz@bootlin.com, geert+renesas@glider.be, lukas@wunner.de, icenowy@aosc.io, arnd@arndb.de, broonie@kernel.org, arnaud.pouliquen@st.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com Subject: Re: [PATCH v3 21/30] iio: adc: sun4i-gpadc-iio: add support for H3 thermal sensor Message-ID: <20180831091137.wkbbipssyd6mqfbt@flea> References: <20180830154518.29507-1-embed3d@gmail.com> <20180830154518.29507-22-embed3d@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="vuxcukfshrcehy5c" Content-Disposition: inline In-Reply-To: <20180830154518.29507-22-embed3d@gmail.com> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --vuxcukfshrcehy5c Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 30, 2018 at 05:45:09PM +0200, Philipp Rossak wrote: > This patch adds support for the H3 ths sensor. >=20 > The H3 supports interrupts. The interrupt is configured to update the > the sensor values every second. The calibration data is writen at the > begin of the init process. >=20 > Signed-off-by: Philipp Rossak > --- > drivers/iio/adc/sun4i-gpadc-iio.c | 91 +++++++++++++++++++++++++++++++= ++++++ > include/linux/iio/adc/sun4i-gpadc.h | 18 ++++++++ > 2 files changed, 109 insertions(+) >=20 > diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gp= adc-iio.c > index c7b46c82e3e5..d5c7971b2558 100644 > --- a/drivers/iio/adc/sun4i-gpadc-iio.c > +++ b/drivers/iio/adc/sun4i-gpadc-iio.c > @@ -72,6 +72,7 @@ struct gpadc_data { > u32 temp_data_base; > int sensor_count; > bool supports_nvmem; > + u32 ths_irq_clear; > }; > =20 > static irqreturn_t sun4i_gpadc_data_irq_handler(int irq, void *dev_id); > @@ -79,6 +80,10 @@ static irqreturn_t sun4i_gpadc_data_irq_handler(int ir= q, void *dev_id); > static int sun4i_ths_resume(struct sun4i_gpadc_iio *info); > static int sun4i_ths_suspend(struct sun4i_gpadc_iio *info); > =20 > +static int sun8i_h3_ths_resume(struct sun4i_gpadc_iio *info); > +static int sun8i_h3_ths_suspend(struct sun4i_gpadc_iio *info); > +static irqreturn_t sunx8i_h3_irq_thread(int irq, void *data); > + > static const struct gpadc_data sun4i_gpadc_data =3D { > .temp_offset =3D -1932, > .temp_scale =3D 133, > @@ -137,6 +142,22 @@ static const struct gpadc_data sun8i_a33_gpadc_data = =3D { > .sensor_count =3D 1, > }; > =20 > +static const struct gpadc_data sun8i_h3_ths_data =3D { > + .temp_offset =3D -1791, > + .temp_scale =3D -121, > + .temp_data_base =3D SUN8I_H3_THS_TDATA0, > + .ths_irq_thread =3D sunx8i_h3_irq_thread, > + .support_irq =3D true, > + .has_bus_clk =3D true, > + .has_bus_rst =3D true, > + .has_mod_clk =3D true, > + .sensor_count =3D 1, > + .supports_nvmem =3D true, > + .ths_resume =3D sun8i_h3_ths_resume, > + .ths_suspend =3D sun8i_h3_ths_suspend, > + .ths_irq_clear =3D SUN8I_H3_THS_INTS_TDATA_IRQ_0, > +}; > + > struct sun4i_sensor_tzd { > struct sun4i_gpadc_iio *info; > struct thermal_zone_device *tzd; > @@ -409,6 +430,31 @@ static irqreturn_t sun4i_gpadc_data_irq_handler(int = irq, void *dev_id) > return IRQ_HANDLED; > } > =20 > +static irqreturn_t sunx8i_h3_irq_thread(int irq, void *data) > +{ > + struct sun4i_gpadc_iio *info =3D data; > + int i; > + > + regmap_write(info->regmap, SUN8I_H3_THS_STAT, > + info->data->ths_irq_clear); > + > + for (i =3D 0; i < info->data->sensor_count; i++) > + thermal_zone_device_update(info->tzds[i].tzd, > + THERMAL_EVENT_TEMP_SAMPLE); > + > + return IRQ_HANDLED; > +} > + > +static int sun8i_h3_calibrate(struct sun4i_gpadc_iio *info) > +{ > +// regmap_write(info->regmap, SUNXI_THS_CDATA_0_1, > +// info->calibration_data[0]); > +// regmap_write(info->regmap, SUNXI_THS_CDATA_2_3, > +// info->calibration_data[1]); Don't put commented code. > + > + return 0; > +} > + > static int sun4i_gpadc_runtime_suspend(struct device *dev) > { > struct sun4i_gpadc_iio *info =3D iio_priv(dev_get_drvdata(dev)); > @@ -428,6 +474,16 @@ static int sun4i_ths_suspend(struct sun4i_gpadc_iio = *info) > return 0; > } > =20 > +static int sun8i_h3_ths_suspend(struct sun4i_gpadc_iio *info) > +{ > + /* Disable ths interrupt */ > + regmap_write(info->regmap, SUN8I_H3_THS_INTC, 0x0); > + /* Disable temperature sensor */ > + regmap_write(info->regmap, SUN8I_H3_THS_CTRL2, 0x0); > + > + return 0; > +} > + > static int sun4i_gpadc_runtime_resume(struct device *dev) > { > struct sun4i_gpadc_iio *info =3D iio_priv(dev_get_drvdata(dev)); > @@ -454,6 +510,37 @@ static int sun4i_ths_resume(struct sun4i_gpadc_iio *= info) > return 0; > } > =20 > +static int sun8i_h3_ths_resume(struct sun4i_gpadc_iio *info) > +{ > + u32 value; > + > + sun8i_h3_calibrate(info); > + > + regmap_write(info->regmap, SUN8I_H3_THS_CTRL0, > + SUN4I_GPADC_CTRL0_T_ACQ(0xff)); > + > + regmap_write(info->regmap, SUN8I_H3_THS_CTRL2, > + SUN8I_H3_THS_ACQ1(0x3f)); > + > + regmap_write(info->regmap, SUN8I_H3_THS_STAT, > + SUN8I_H3_THS_INTS_TDATA_IRQ_0); > + > + regmap_write(info->regmap, SUN8I_H3_THS_FILTER, > + SUN4I_GPADC_CTRL3_FILTER_EN | > + SUN4I_GPADC_CTRL3_FILTER_TYPE(0x2)); > + > + regmap_write(info->regmap, SUN8I_H3_THS_INTC, > + SUN8I_H3_THS_INTC_TDATA_IRQ_EN0 | > + SUN8I_H3_THS_TEMP_PERIOD(0x55)); > + > + regmap_read(info->regmap, SUN8I_H3_THS_CTRL2, &value); > + > + regmap_write(info->regmap, SUN8I_H3_THS_CTRL2, > + SUN8I_H3_THS_TEMP_SENSE_EN0 | value); Ideally, all these values should have a comment explaining what they are. And we really start to have a lot of registers defines. We'd be better off using regmap_fields. --=20 Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com --vuxcukfshrcehy5c Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE0VqZU19dR2zEVaqr0rTAlCFNr3QFAluJBkgACgkQ0rTAlCFN r3RSPg//VOFLzmgFcVUdvT7V/+SWap9ke9O8u8JvzEqq1qWPEGQIXn97VLyk/Mgi 5L2iyuL3Ii4/XIqLZsT119GhL7s85AARVmEsOk/99eaHoJAyp2B76Oh2UTtAUWoR LgH5jidYkTOmkoMNL5pGr6qCWcs2b59Yk9t37MT/22WCaOF3HtfShNWz2dJjRMoW RHidpGp67b7mZNuBqDeheAA7N0JQroOonuqUoj6YZp9rkt2wrkr0cNnLL7nBdVrB NVQHKCIwF0ZAv7sgMpzP8rvJwg+EUTYlJXHuDSxb4u6SlDeUEB/GmUnhBG2ZKKeG 54WBdTpRHpSnvh2SweYV1Zhowx0oHIZDRX9qk6wd5v2rxL8mpNZB4u04Dy4rubi2 pMtMh31QDOugCh62Me++AdWP728LsnOZ4CDgEP+qwbCHP2BkJC1svppnvDdZf6YQ dFnCHWwWZMSaR6xK0jQG1N4coMyQUB89B/VAfAN1J4qivKc8pAhDcu72fM+bAzaU HFu2zajdZ9ZEDN+SYeq2aZPPOazGHuPK7U2eWilZyIwJMRonCRWbTV5Y3BUTWUUi 7W1nZEa3GXGtwOwWvFUByFHEsqDIQIJKCP/i9fK8k6wnm2uKSTTWRftVqpyLVBxY An0mx9pHfBNSveMsrwzec8PNb6XhPaegFFcyhinH0IwUUs+Go44= =B0Rx -----END PGP SIGNATURE----- --vuxcukfshrcehy5c--