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Fri, 17 Jul 2026 18:40:11 -0700 (PDT) X-Received: by 2002:a05:6a00:278a:b0:845:d284:9e0a with SMTP id d2e1a72fcca58-84c294d4d65mr5211955b3a.49.1784338810876; Fri, 17 Jul 2026 18:40:10 -0700 (PDT) Received: from jic23-huawei ([50.35.46.84]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84c2adc3466sm2028562b3a.15.2026.07.17.18.40.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jul 2026 18:40:10 -0700 (PDT) Date: Sat, 18 Jul 2026 02:40:04 +0100 From: Jonathan Cameron To: Andy Shevchenko Cc: Petar Stepanovic , Akhila Kavi , Prasad Bolisetty , David Lechner , Nuno =?UTF-8?B?U8Oh?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Harshit Shah , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 2/2] iio: adc: add Axiado SARADC driver Message-ID: <20260718023952.5627abec@jic23-huawei> In-Reply-To: References: <20260716-axiado-ax3000-ax3005-saradc-v4-0-810527a9d27f@axiado.com> <20260716-axiado-ax3000-ax3005-saradc-v4-2-810527a9d27f@axiado.com> X-Mailer: Claws Mail 4.4.0 (GTK 3.24.52; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: TqnKFkMQmVJEdcaN7hENjzA8iO2xeFFu X-Proofpoint-GUID: TqnKFkMQmVJEdcaN7hENjzA8iO2xeFFu X-Authority-Analysis: v=2.4 cv=ZKDnX37b c=1 sm=1 tr=0 ts=6a5ad97c cx=c_pps a=rEQLjTOiSrHUhVqRoksmgQ==:117 a=qC1CW/w66vtJz1P9yTJxNA==:17 a=kj9zAlcOel0A:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=QyXUC8HyAAAA:8 a=JNnEj29XURRsWGGOtMsA:9 a=CjuIK1q_8ugA:10 a=2VI0MkxyNR6bbpdq8BZq:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE4MDAxMyBTYWx0ZWRfX9wYOYkWD9/cD 67uwwUz0ACei5h6L3aTLIP7fXl02sBvPoi7EDK8yG2XrteW8crByHZOKOOZHfIwju5GMvNJ1nCa 1M1y23iY3xguzWZmkXWKZzBF/DR+z3BcxlG0tLbcMXIep5sDrxGe6odJaO4vl1PA1XYIO9SOjZJ mAmzDVf8yy5BxrScmbEOU8NA7Zy26dzqfTIMngD+V/SuJ/eFpHmNRi49+JNB7wKYBWB3jFuBdYT 5ttLKLEKcIpZB7irBW4mQeWbFOsGLoXGLCcHepTsnc1ayPnar5NtJQtfD8dCTppcnkvf/k5dFrh VtvwDmKZnnqwtHC9DGCO1r1S15wH4sYQXUABhECZKYPiA9Hkeylrv1VOdy/d5Zwz/vkihPDpE69 Mmn7G1kG7e8C6U7vY0H+RUZecCNc/UMktC6gf8dSciGDq1/ktwTKioseFqsZoBqnOoge0gaYBUA dvkQmE8vVJ+3F+fxYYw== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE4MDAxMyBTYWx0ZWRfX0QwatdcWsXSE SX9NIihMTvsud5JN/Q0hMIKyvXD8Q+YlntMWZhMnMSPRNKOuBkwIvR0cQ2WZXTPSIYROM7pFy8c 4pPLzrfEhxv+5lmOVhwb8isUgx0dAmw= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-17_07,2026-07-17_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 suspectscore=0 spamscore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 malwarescore=0 clxscore=1015 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607180013 On Fri, 17 Jul 2026 11:34:56 +0300 Andy Shevchenko wrote: > On Thu, Jul 16, 2026 at 10:53:02PM -0700, Petar Stepanovic wrote: > > Add support for the SARADC controller found on Axiado AX3000 and > > AX3005 SoCs. > > > > The driver supports single-shot voltage reads through the IIO > > subsystem. The number of available input channels is selected from > > the SoC match data, allowing AX3000 and AX3005 variants to use the > > same driver. > Andy already commented everywhere I'd have said things, so just a few places where I'd take a different approach to resolving stuff. Thanks, Jonathan > > ... > > > +/* GLOBAL_CTRL register values */ > > +#define AX_SARADC_GLOBAL_CTRL_SAMPLE_16 \ > > + FIELD_PREP(AX_SARADC_GLOBAL_CTRL_SAMPLE_MASK, 0) > > + > > +#define AX_SARADC_GLOBAL_CTRL_MODE_MANUAL \ > > + FIELD_PREP(AX_SARADC_GLOBAL_CTRL_MODE_MASK, 1) > > FIELD_PREP_CONST() in both cases. > For this second one I'd rather see defines for the values the field takes and then FIELD_PREP only used inline. #define AX_SARADC_GLOBAL_CTL_MODE_something 0 #define AX_SARADC_GLOBAL_CTL_MODE_MANUAL 1 To me that acts as clearer documentation of what is going on at the point of the write. Similar applies for the SAMPLE_MASK field where I'd define the value 0 with a name then have the FIELD_PREP() inline. > ... > > > +#define AX_SARADC_MANUAL_CTRL_EN(ch) \ > > + (AX_SARADC_MANUAL_CTRL_ENABLE | \ > > + FIELD_PREP(AX_SARADC_MANUAL_CTRL_CH_SEL_MASK, ch)) > > Missing parentheses for ch. Also wrong indentation of the second line, missing > one space. > I wonder if it would be more readable to just push that inline rather than having this define at all.