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Thu, 24 Oct 2024 11:11:03 -0700 (PDT) From: Jerome Brunet Date: Thu, 24 Oct 2024 20:10:35 +0200 Subject: [PATCH v3 1/6] hwmon: (pmbus/core) allow drivers to override WRITE_PROTECT Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241024-tps25990-v3-1-b6a6e9d4b506@baylibre.com> References: <20241024-tps25990-v3-0-b6a6e9d4b506@baylibre.com> In-Reply-To: <20241024-tps25990-v3-0-b6a6e9d4b506@baylibre.com> To: Jean Delvare , Guenter Roeck , Jonathan Corbet , Patrick Rudolph , Naresh Solanki , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jerome Brunet , Delphine CC Chiu Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devicetree@vger.kernel.org, linux-i2c@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1166; i=jbrunet@baylibre.com; h=from:subject:message-id; bh=o/S07rQA5LKC++ibvZP8+btEUdTChzX9PQxEcexB2Fc=; b=owEBbQKS/ZANAwAKAeb8Dxw38tqFAcsmYgBnGo2vAVbdImCMdj783Ex0INoW6HwNWBuxtOWSv t0iBHLujqCJAjMEAAEKAB0WIQT04VmuGPP1bV8btxvm/A8cN/LahQUCZxqNrwAKCRDm/A8cN/La hUJED/wMYn0ebSATdu5mONHobOwZ3UCQWGqyMmqcDSKDUHGHAciT7QMU8ONAMelna4EsnJ/GdpO uD0jcNBGz0eWpBSrChB8ftYONkk7IfVQuSWVC1Q7e3xa0JMK4uv/ojV/6MG9pz30lWBF1jPBBp4 jlD8kLb9FT48dAnuQSur1Ka+yoDmdoQXioG2/m65B8hk1o43400u/DYwdUg8mHS/pFKctzbiRH7 uLeJAU9vdI2DsMLWV1N5BqIBWWF5ZdPoydjdBaAnl+1GYpdkfo1PZ+p5x3aDL3j/tpnAg4T+2x2 nn2ZwF7SYyChXJCNe5B/lz/fwQfO8eyNF+iAu0lxkG15YuiuNUhn+AG2UEQIBe2uZMzzaCDcJqb J/YiRV3mb5CjQC/SRFCGR1g0wg9VOxQPLXWFP8XPPYbsoAU5vjbNLArO4HV4NnR8csaEWiQugO8 T+pFlTEXFcTEVrUvdFyaGfBZnmD6WKMVsZufiuATwFHPx64ppQYGmpRuAX0nERi9dXmHs8FWIou yFzraIYnvMWqb8Jv1ivwTTTdPU3ZeDk6E2t+Z+2bNGf8z7jpUxPvA3sSmHwlmxFPbLCS1BL8Bv3 VjPaAN4AhqAV4DK4LSVZgbzpLK4iEvX9Pbr6Mcis8mvPCkagFuu8VHVAtOTxAeRXI0+2rHxWxdZ Za1zLd5j1UEyyWA== X-Developer-Key: i=jbrunet@baylibre.com; a=openpgp; fpr=F29F26CF27BAE1A9719AE6BDC3C92AAF3E60AED9 Use _pmbus_read_byte_data() rather than calling smbus directly to check the write protection status. This give a chance to device implementing write protection differently to report back on the actual write protection status. Signed-off-by: Jerome Brunet --- drivers/hwmon/pmbus/pmbus_core.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index ce7fd4ca9d89b0f0a02e6c99db391a7cfca924a8..085a4dc91d9bad3d2aacdd946b74a094ea9ae458 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -2719,9 +2719,7 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data, * limit registers need to be disabled. */ if (!(data->flags & PMBUS_NO_WRITE_PROTECT)) { - pmbus_wait(client); - ret = i2c_smbus_read_byte_data(client, PMBUS_WRITE_PROTECT); - pmbus_update_ts(client, false); + ret = _pmbus_read_byte_data(client, 0xff, PMBUS_WRITE_PROTECT); if (ret > 0 && (ret & PB_WP_ANY)) data->flags |= PMBUS_WRITE_PROTECTED | PMBUS_SKIP_STATUS_CHECK;