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[98.183.112.25]) by smtp.gmail.com with ESMTPSA id 5614622812f47-3ece25014dcsm10941403b6e.26.2025.01.07.15.46.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Jan 2025 15:46:47 -0800 (PST) Message-ID: <64f913bf-a421-4def-a76c-6fcbc190fa64@baylibre.com> Date: Tue, 7 Jan 2025 17:46:45 -0600 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 11/15] iio: adc: ad7768-1: Add reg_write_masked function To: Jonathan Santos , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Sergiu Cuciurean , lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, marcelo.schmitt1@gmail.com References: <67649c43050d161621bc0494638bfa71fed82ea8.1736201898.git.Jonathan.Santos@analog.com> From: David Lechner Content-Language: en-US In-Reply-To: <67649c43050d161621bc0494638bfa71fed82ea8.1736201898.git.Jonathan.Santos@analog.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 1/7/25 9:26 AM, Jonathan Santos wrote: > From: Sergiu Cuciurean > > This commit adds the ad7768_spi_reg_write_masked() which is a helper > function for writing specific bits inside a register, without interfering > with the other bit values. > > Signed-off-by: Sergiu Cuciurean > --- > drivers/iio/adc/ad7768-1.c | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > > diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c > index 574d735f2c3a..675af9ea856d 100644 > --- a/drivers/iio/adc/ad7768-1.c > +++ b/drivers/iio/adc/ad7768-1.c > @@ -242,6 +242,21 @@ static int ad7768_spi_reg_write(struct ad7768_state *st, > return spi_write(st->spi, st->data.d8, 2); > } > > +static int ad7768_spi_reg_write_masked(struct ad7768_state *st, > + unsigned int addr, > + unsigned int mask, > + unsigned int val) > +{ > + unsigned int reg_val; > + int ret; > + > + ret = ad7768_spi_reg_read(st, addr, ®_val, 1); > + if (ret < 0) > + return ret; > + > + return ad7768_spi_reg_write(st, addr, (reg_val & ~mask) | val); > +} > + > static int ad7768_set_mode(struct ad7768_state *st, > enum ad7768_conv_mode mode) > { Can we convert this driver to use regmap instead of reinventing it?