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charset="utf-8" From: Axel Haslam Add an offset parameter that can be passed in the periodic trigger. This is useful for example when ADC drivers implement a separate periodic signal to trigger conversion and need offload to read the result with some delay. Signed-off-by: Axel Haslam Signed-off-by: Marcelo Schmitt --- include/linux/spi/offload/types.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/spi/offload/types.h b/include/linux/spi/offload/= types.h index 6f7892347871..0170fd1f42e5 100644 --- a/include/linux/spi/offload/types.h +++ b/include/linux/spi/offload/types.h @@ -59,6 +59,7 @@ enum spi_offload_trigger_type { =20 struct spi_offload_trigger_periodic { u64 frequency_hz; + u64 offset_ns; }; =20 struct spi_offload_trigger_config { --=20 2.50.1 From nobody Thu Oct 2 09:16:53 2025 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 C5F8A25A2DD; Thu, 18 Sep 2025 17:35:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.135.77 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; 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Thu, 18 Sep 2025 13:34:57 -0400 From: Marcelo Schmitt To: , , CC: Axel Haslam , , , , , , Subject: [PATCH v2 2/2] spi: spi-offload-trigger-pwm: Use duty offset Date: Thu, 18 Sep 2025 14:34:54 -0300 Message-ID: <181f64a4e9f0d6788f325a200b24b0166cb8c346.1758206554.git.marcelo.schmitt@analog.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: 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-Authority-Analysis: v=2.4 cv=cLfgskeN c=1 sm=1 tr=0 ts=68cc42cc cx=c_pps a=PpDZqlmH/M8setHirZLBMw==:117 a=PpDZqlmH/M8setHirZLBMw==:17 a=yJojWOMRYYMA:10 a=IpJZQVW2AAAA:8 a=gAnH3GRIAAAA:8 a=Nz0FCHQsgo3j7Z9OLJ8A:9 a=IawgGOuG5U0WyFbmm1f5:22 X-Proofpoint-ORIG-GUID: YiAUmGGTatEKf-4cwZJUxQbFE0ejCRjT X-Proofpoint-GUID: YiAUmGGTatEKf-4cwZJUxQbFE0ejCRjT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTE2MDIwMiBTYWx0ZWRfX/uppbCiRYdVj d6XyZm/OYXCGMXug0MogfMnqzqwLyQNIf3BVn2WzhhyiS5QyL9u3mq+m1jBGCVQ4ooQSix4kbAB doW0CJzIFEVcv3+uuWPzjvTua+bRqAqnjquWhrBXwlybd1cKtQ9zHeOK1ChsmVofguBcn/bSk7F 4M2ohsVDAkCEhr+tqgElHFCvv0KAW1udUGvaq/we+ovwm5ibYT30DllHLTUoSHYvU9H5gc/ur+U WQSCXi/Bhlo+QRd2krGSRa/o+n+HEE7jPa9YPEJ2zJ+/4agvDkDcgk8WdkcZ0tY+qIkUA0aOM2e ATMDgpYTdIA/XqqJaWtr6wzpd6By1wxZqBtEa0AMf/eQNL7BldsBkNs/r3ewpz2kSWbdqZwkJdV /8vqxKHb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-18_02,2025-09-18_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 suspectscore=0 clxscore=1015 malwarescore=0 adultscore=0 spamscore=0 impostorscore=0 priorityscore=1501 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509160202 Content-Type: text/plain; charset="utf-8" From: Axel Haslam Pass the duty offset to the waveform pwm. Signed-off-by: Axel Haslam Signed-off-by: Marcelo Schmitt --- drivers/spi/spi-offload-trigger-pwm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/spi/spi-offload-trigger-pwm.c b/drivers/spi/spi-offloa= d-trigger-pwm.c index 805ed41560df..3e8c19227edb 100644 --- a/drivers/spi/spi-offload-trigger-pwm.c +++ b/drivers/spi/spi-offload-trigger-pwm.c @@ -51,12 +51,14 @@ static int spi_offload_trigger_pwm_validate(struct spi_= offload_trigger *trigger, wf.period_length_ns =3D DIV_ROUND_UP_ULL(NSEC_PER_SEC, periodic->frequenc= y_hz); /* REVISIT: 50% duty-cycle for now - may add config parameter later */ wf.duty_length_ns =3D wf.period_length_ns / 2; + wf.duty_offset_ns =3D periodic->offset_ns; =20 ret =3D pwm_round_waveform_might_sleep(st->pwm, &wf); if (ret < 0) return ret; =20 periodic->frequency_hz =3D DIV_ROUND_UP_ULL(NSEC_PER_SEC, wf.period_lengt= h_ns); + periodic->offset_ns =3D wf.duty_offset_ns; =20 return 0; } @@ -77,6 +79,7 @@ static int spi_offload_trigger_pwm_enable(struct spi_offl= oad_trigger *trigger, wf.period_length_ns =3D DIV_ROUND_UP_ULL(NSEC_PER_SEC, periodic->frequenc= y_hz); /* REVISIT: 50% duty-cycle for now - may add config parameter later */ wf.duty_length_ns =3D wf.period_length_ns / 2; + wf.duty_offset_ns =3D periodic->offset_ns; =20 return pwm_set_waveform_might_sleep(st->pwm, &wf, false); } --=20 2.50.1