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Fri, 7 Aug 2026 04:58:36 -0400 From: Antoniu Miclaus To: Antoniu Miclaus , =?UTF-8?q?Nuno=20S=C3=A1?= , Michael Hennerich , Jonathan Cameron , David Lechner , , , Subject: [PATCH 1/3] iio: adc: ade9000: request interrupts after powering the device Date: Fri, 7 Aug 2026 11:56:41 +0300 Message-ID: <20260807085643.5502-2-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260807085643.5502-1-antoniu.miclaus@analog.com> References: <20260807085643.5502-1-antoniu.miclaus@analog.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-ORIG-GUID: JBMpcJ_-HoAiOT93xNymD1PEi0ostkkF X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODA3MDA2NiBTYWx0ZWRfX8jiW0unXozh/ y4s8ovQPW52b7a3hfEQEWrR/p+Mh9RY9dfdR/xhchd6w0EZU+BftNvhFpygI20RRotTy1kRblut yGIcHJRUlGqUkN1I4sNgb3Cd6atx/h94BcNYbEKaOr8gRnDCy10Em1Aufn+E3HrDSkR//Uf+nf8 izWRbCIyWy2msuBTDPXY8IDL0hp8PWrzE16RbqdhAkHW93jpyoR8MONvamTHqzwCJFO5LtBcPl8 jSPAnmRUo1L1WfKg1bCWHywlgmr3gk/JFBWLhpJntbU2iFbRXozODOde2KCY6QdvnsFlVlWL5sK /zAOp9lYTaGNYneoZe1ZG8lvzSDU1cHMJlaLcPgabMuPlwt21T5XLhaAAw/tXC9KgEn8YIzn7/C 1YaNgZg87aJWB4WeiFl5whyQryU+4eFeDjPrv369Hd7Zg+ex8dhTRscFmI4MvYK1rUViG9Gizxm 77x58Pb75Re1IT9qnTg== X-Authority-Analysis: v=2.4 cv=CIYamxrD c=1 sm=1 tr=0 ts=6a759e44 cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=0sLvza09kfJOxVLZPwjg:22 a=uXIjobp8t2wMuQ0fPvqm:22 a=gAnH3GRIAAAA:8 a=-ElmzxKXR75nSRxw42wA:9 X-Proofpoint-GUID: JBMpcJ_-HoAiOT93xNymD1PEi0ostkkF X-Proofpoint-Spam-Info: AW1haW4tMjYwODA3MDA2NiBTYWx0ZWRfXys7jGtUV6PqF ggYNe0J9Qbu5ea/t05vyhDko7pyf8iHuhPBEwGqXi0I3PW+l/BMyACHnPmhrmSNAKB4tNqib1to 4+EBY0GZXuCMuTSwUin9wtYvTffxsrjwxAd1issT3Tq3/Tu5QNWr X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-07_01,2026-08-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 clxscore=1015 adultscore=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 spamscore=0 priorityscore=1501 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608070066 Content-Type: text/plain; charset="utf-8" The IRQ handlers do SPI register accesses, but the interrupts were requested before the vdd regulator was enabled. An interrupt arriving while the chip is unpowered runs a handler against a dead chip, causing SPI errors or garbage reads. Request the interrupts after enabling the regulator. This keeps irq1 registered before ade9000_reset(), which waits on it, and lets devm free the interrupts before the regulator is disabled. Fixes: 81de7b4619fc ("iio: adc: add ade9000 support") Signed-off-by: Antoniu Miclaus Reviewed-by: Joshua Crofts --- drivers/iio/adc/ade9000.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/iio/adc/ade9000.c b/drivers/iio/adc/ade9000.c index c6c3ea953fea..51cb43755a1f 100644 --- a/drivers/iio/adc/ade9000.c +++ b/drivers/iio/adc/ade9000.c @@ -1705,18 +1705,6 @@ static int ade9000_probe(struct spi_device *spi) if (ret) return ret; =20 - ret =3D ade9000_request_irq(dev, "irq0", ade9000_irq0_thread, indio_dev); - if (ret) - return ret; - - ret =3D ade9000_request_irq(dev, "irq1", ade9000_irq1_thread, indio_dev); - if (ret) - return ret; - - ret =3D ade9000_request_irq(dev, "dready", ade9000_dready_thread, indio_d= ev); - if (ret) - return ret; - /* External CMOS clock input (optional - crystal can be used instead) */ st->clkin =3D devm_clk_get_optional_enabled(dev, NULL); if (IS_ERR(st->clkin)) @@ -1736,6 +1724,19 @@ static int ade9000_probe(struct spi_device *spi) return dev_err_probe(&spi->dev, ret, "Failed to get and enable vdd regulator\n"); 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charset="utf-8" Current channels used scan_index "num" and voltage "num + 1", so with phases 0, 1 and 2 the indices overlapped and no longer matched the IA=3D0, VA=3D1, IB=3D2, VB=3D3, IC=3D4, VC=3D5 layout expected by ade9000_waveform_buffer_config(). Phase B and C buffers were configured incorrectly. Use "num * 2" for current and "num * 2 + 1" for voltage to get the non-overlapping 0/1, 2/3, 4/5 layout. Fixes: 81de7b4619fc ("iio: adc: add ade9000 support") Signed-off-by: Antoniu Miclaus --- drivers/iio/adc/ade9000.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ade9000.c b/drivers/iio/adc/ade9000.c index 51cb43755a1f..167b1f4d6279 100644 --- a/drivers/iio/adc/ade9000.c +++ b/drivers/iio/adc/ade9000.c @@ -444,7 +444,7 @@ static const struct iio_chan_spec_ext_info ade9000_ext_= info[] =3D { BIT(IIO_CHAN_INFO_CALIBSCALE), \ .event_spec =3D ade9000_current_events, \ .num_event_specs =3D ARRAY_SIZE(ade9000_current_events), \ - .scan_index =3D num, \ + .scan_index =3D num * 2, \ .indexed =3D 1, \ .scan_type =3D { \ .sign =3D 's', \ @@ -464,7 +464,7 @@ static const struct iio_chan_spec_ext_info ade9000_ext_= info[] =3D { BIT(IIO_CHAN_INFO_FREQUENCY), \ .event_spec =3D ade9000_voltage_events, \ .num_event_specs =3D ARRAY_SIZE(ade9000_voltage_events), \ - .scan_index =3D num + 1, /* interleave with current channels */ \ + .scan_index =3D num * 2 + 1, /* interleave with current channels */ \ .indexed =3D 1, \ .scan_type =3D { \ .sign =3D 's', \ --=20 2.43.0 From nobody Tue Sep 29 13:19:46 2026 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2BB6444A405; 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charset="utf-8" ADE9000_ST1_CROSSING_DEPTH is the exclusive upper bound for scanning the STATUS1 event bits, so a value of 25 left out the highest event bit, ADE9000_ST1_DIPC_BIT (bit 25). Phase C dip events were never reported. Bump the value to 26 so bit 25 is scanned. Fixes: 81de7b4619fc ("iio: adc: add ade9000 support") Signed-off-by: Antoniu Miclaus --- drivers/iio/adc/ade9000.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ade9000.c b/drivers/iio/adc/ade9000.c index 167b1f4d6279..da6caabfe2a4 100644 --- a/drivers/iio/adc/ade9000.c +++ b/drivers/iio/adc/ade9000.c @@ -219,7 +219,7 @@ #define ADE9000_ST1_ERROR2_BIT BIT(30) #define ADE9000_ST1_ERROR3_BIT BIT(31) #define ADE9000_ST1_CROSSING_FIRST 6 -#define ADE9000_ST1_CROSSING_DEPTH 25 +#define ADE9000_ST1_CROSSING_DEPTH 26 =20 #define ADE9000_WFB_TRG_DIP_BIT BIT(0) #define ADE9000_WFB_TRG_SWELL_BIT BIT(1) --=20 2.43.0