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[78.94.0.51]) by smtp.gmail.com with ESMTPSA id m17-20020a7bce11000000b003e209b45f6bsm4857021wmc.29.2023.02.17.00.36.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Feb 2023 00:36:35 -0800 (PST) From: Naresh Solanki X-Google-Original-From: Naresh Solanki To: Guenter Roeck , Jean Delvare Cc: linux-hwmon@vger.kernel.org, Naresh Solanki , linux-kernel@vger.kernel.org Subject: [PATCH v3 1/4] hwmon: (pmbus/core): Generalize pmbus status flag map Date: Fri, 17 Feb 2023 09:36:28 +0100 Message-Id: <20230217083631.657430-1-Naresh.Solanki@9elements.com> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1758066739785229569?= X-GMAIL-MSGID: =?utf-8?q?1758066739785229569?= The PMBus status flag map(pmbus_regulator_status_flag_map) is moved outside of the regulator #if block and the associated variable/struct name updated to reflect as generic PMBus status. This will make the PMBus status flag map more versatile and easier to incorporate into different contexts and functions. Signed-off-by: Naresh Solanki Reviewed-by: Guenter Roeck --- drivers/hwmon/pmbus/pmbus_core.c | 94 ++++++++++++++++---------------- 1 file changed, 47 insertions(+), 47 deletions(-) base-commit: 5720a18baa4686d56d0a235e6ecbcc55f8d716d7 diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 95e95783972a..1b70cf3be313 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -2692,6 +2692,49 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data, return 0; } +/* A PMBus status flag and the corresponding REGULATOR_ERROR_* flag */ +struct pmbus_status_assoc { + int pflag, rflag; +}; + +/* PMBus->regulator bit mappings for a PMBus status register */ +struct pmbus_status_category { + int func; + int reg; + const struct pmbus_status_assoc *bits; /* zero-terminated */ +}; + +static const struct pmbus_status_category __maybe_unused pmbus_status_flag_map[] = { + { + .func = PMBUS_HAVE_STATUS_VOUT, + .reg = PMBUS_STATUS_VOUT, + .bits = (const struct pmbus_status_assoc[]) { + { PB_VOLTAGE_UV_WARNING, REGULATOR_ERROR_UNDER_VOLTAGE_WARN }, + { PB_VOLTAGE_UV_FAULT, REGULATOR_ERROR_UNDER_VOLTAGE }, + { PB_VOLTAGE_OV_WARNING, REGULATOR_ERROR_OVER_VOLTAGE_WARN }, + { PB_VOLTAGE_OV_FAULT, REGULATOR_ERROR_REGULATION_OUT }, + { }, + }, + }, { + .func = PMBUS_HAVE_STATUS_IOUT, + .reg = PMBUS_STATUS_IOUT, + .bits = (const struct pmbus_status_assoc[]) { + { PB_IOUT_OC_WARNING, REGULATOR_ERROR_OVER_CURRENT_WARN }, + { PB_IOUT_OC_FAULT, REGULATOR_ERROR_OVER_CURRENT }, + { PB_IOUT_OC_LV_FAULT, REGULATOR_ERROR_OVER_CURRENT }, + { }, + }, + }, { + .func = PMBUS_HAVE_STATUS_TEMP, + .reg = PMBUS_STATUS_TEMPERATURE, + .bits = (const struct pmbus_status_assoc[]) { + { PB_TEMP_OT_WARNING, REGULATOR_ERROR_OVER_TEMP_WARN }, + { PB_TEMP_OT_FAULT, REGULATOR_ERROR_OVER_TEMP }, + { }, + }, + }, +}; + #if IS_ENABLED(CONFIG_REGULATOR) static int pmbus_regulator_is_enabled(struct regulator_dev *rdev) { @@ -2738,54 +2781,11 @@ static int pmbus_regulator_disable(struct regulator_dev *rdev) return _pmbus_regulator_on_off(rdev, 0); } -/* A PMBus status flag and the corresponding REGULATOR_ERROR_* flag */ -struct pmbus_regulator_status_assoc { - int pflag, rflag; -}; - -/* PMBus->regulator bit mappings for a PMBus status register */ -struct pmbus_regulator_status_category { - int func; - int reg; - const struct pmbus_regulator_status_assoc *bits; /* zero-terminated */ -}; - -static const struct pmbus_regulator_status_category pmbus_regulator_flag_map[] = { - { - .func = PMBUS_HAVE_STATUS_VOUT, - .reg = PMBUS_STATUS_VOUT, - .bits = (const struct pmbus_regulator_status_assoc[]) { - { PB_VOLTAGE_UV_WARNING, REGULATOR_ERROR_UNDER_VOLTAGE_WARN }, - { PB_VOLTAGE_UV_FAULT, REGULATOR_ERROR_UNDER_VOLTAGE }, - { PB_VOLTAGE_OV_WARNING, REGULATOR_ERROR_OVER_VOLTAGE_WARN }, - { PB_VOLTAGE_OV_FAULT, REGULATOR_ERROR_REGULATION_OUT }, - { }, - }, - }, { - .func = PMBUS_HAVE_STATUS_IOUT, - .reg = PMBUS_STATUS_IOUT, - .bits = (const struct pmbus_regulator_status_assoc[]) { - { PB_IOUT_OC_WARNING, REGULATOR_ERROR_OVER_CURRENT_WARN }, - { PB_IOUT_OC_FAULT, REGULATOR_ERROR_OVER_CURRENT }, - { PB_IOUT_OC_LV_FAULT, REGULATOR_ERROR_OVER_CURRENT }, - { }, - }, - }, { - .func = PMBUS_HAVE_STATUS_TEMP, - .reg = PMBUS_STATUS_TEMPERATURE, - .bits = (const struct pmbus_regulator_status_assoc[]) { - { PB_TEMP_OT_WARNING, REGULATOR_ERROR_OVER_TEMP_WARN }, - { PB_TEMP_OT_FAULT, REGULATOR_ERROR_OVER_TEMP }, - { }, - }, - }, -}; - static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags) { int i, status; - const struct pmbus_regulator_status_category *cat; - const struct pmbus_regulator_status_assoc *bit; + const struct pmbus_status_category *cat; + const struct pmbus_status_assoc *bit; struct device *dev = rdev_get_dev(rdev); struct i2c_client *client = to_i2c_client(dev->parent); struct pmbus_data *data = i2c_get_clientdata(client); @@ -2796,8 +2796,8 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned mutex_lock(&data->update_lock); - for (i = 0; i < ARRAY_SIZE(pmbus_regulator_flag_map); i++) { - cat = &pmbus_regulator_flag_map[i]; + for (i = 0; i < ARRAY_SIZE(pmbus_status_flag_map); i++) { + cat = &pmbus_status_flag_map[i]; if (!(func & cat->func)) continue; From patchwork Fri Feb 17 08:36:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naresh Solanki X-Patchwork-Id: 58419 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp770824wrn; 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[78.94.0.51]) by smtp.gmail.com with ESMTPSA id m17-20020a7bce11000000b003e209b45f6bsm4857021wmc.29.2023.02.17.00.36.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Feb 2023 00:36:37 -0800 (PST) From: Naresh Solanki X-Google-Original-From: Naresh Solanki To: Guenter Roeck , Jean Delvare Cc: linux-hwmon@vger.kernel.org, Naresh Solanki , linux-kernel@vger.kernel.org Subject: [PATCH v3 2/4] hwmon: (pmbus/core) Generalise pmbus get status Date: Fri, 17 Feb 2023 09:36:29 +0100 Message-Id: <20230217083631.657430-2-Naresh.Solanki@9elements.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230217083631.657430-1-Naresh.Solanki@9elements.com> References: <20230217083631.657430-1-Naresh.Solanki@9elements.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1758066741892466549?= X-GMAIL-MSGID: =?utf-8?q?1758066741892466549?= Add function pmbus get status that can be used to get both pmbus specific status & regulator status Signed-off-by: Naresh Solanki ... Changes in V3: - Add pmbus_is_enabled function Changes in V2: - Add __maybe attribute for pmbus_get_status function - Remove unrelated changes Reviewed-by: Guenter Roeck --- drivers/hwmon/pmbus/pmbus_core.c | 98 ++++++++++++++++++++------------ 1 file changed, 62 insertions(+), 36 deletions(-) diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 1b70cf3be313..f8ac9016ea0e 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -2735,18 +2735,12 @@ static const struct pmbus_status_category __maybe_unused pmbus_status_flag_map[] }, }; -#if IS_ENABLED(CONFIG_REGULATOR) -static int pmbus_regulator_is_enabled(struct regulator_dev *rdev) +static int _pmbus_is_enabled(struct device *dev, u8 page) { - struct device *dev = rdev_get_dev(rdev); struct i2c_client *client = to_i2c_client(dev->parent); - struct pmbus_data *data = i2c_get_clientdata(client); - u8 page = rdev_get_id(rdev); int ret; - mutex_lock(&data->update_lock); ret = _pmbus_read_byte_data(client, page, PMBUS_OPERATION); - mutex_unlock(&data->update_lock); if (ret < 0) return ret; @@ -2754,58 +2748,38 @@ static int pmbus_regulator_is_enabled(struct regulator_dev *rdev) return !!(ret & PB_OPERATION_CONTROL_ON); } -static int _pmbus_regulator_on_off(struct regulator_dev *rdev, bool enable) +static int __maybe_unused pmbus_is_enabled(struct device *dev, u8 page) { - struct device *dev = rdev_get_dev(rdev); struct i2c_client *client = to_i2c_client(dev->parent); struct pmbus_data *data = i2c_get_clientdata(client); - u8 page = rdev_get_id(rdev); int ret; mutex_lock(&data->update_lock); - ret = pmbus_update_byte_data(client, page, PMBUS_OPERATION, - PB_OPERATION_CONTROL_ON, - enable ? PB_OPERATION_CONTROL_ON : 0); + ret = _pmbus_is_enabled(dev, page); mutex_unlock(&data->update_lock); - return ret; -} - -static int pmbus_regulator_enable(struct regulator_dev *rdev) -{ - return _pmbus_regulator_on_off(rdev, 1); -} - -static int pmbus_regulator_disable(struct regulator_dev *rdev) -{ - return _pmbus_regulator_on_off(rdev, 0); + return !!(ret & PB_OPERATION_CONTROL_ON); } -static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags) +static int _pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags) { int i, status; const struct pmbus_status_category *cat; const struct pmbus_status_assoc *bit; - struct device *dev = rdev_get_dev(rdev); - struct i2c_client *client = to_i2c_client(dev->parent); - struct pmbus_data *data = i2c_get_clientdata(client); - u8 page = rdev_get_id(rdev); + struct device *dev = data->dev; + struct i2c_client *client = to_i2c_client(dev); int func = data->info->func[page]; *flags = 0; - mutex_lock(&data->update_lock); - for (i = 0; i < ARRAY_SIZE(pmbus_status_flag_map); i++) { cat = &pmbus_status_flag_map[i]; if (!(func & cat->func)) continue; status = _pmbus_read_byte_data(client, page, cat->reg); - if (status < 0) { - mutex_unlock(&data->update_lock); + if (status < 0) return status; - } for (bit = cat->bits; bit->pflag; bit++) { if (status & bit->pflag) @@ -2823,11 +2797,10 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned * REGULATOR_ERROR__WARN. */ status = pmbus_get_status(client, page, PMBUS_STATUS_WORD); - mutex_unlock(&data->update_lock); if (status < 0) return status; - if (pmbus_regulator_is_enabled(rdev)) { + if (_pmbus_is_enabled(dev, page)) { if (status & PB_STATUS_OFF) *flags |= REGULATOR_ERROR_FAIL; @@ -2855,6 +2828,59 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned return 0; } +static int __maybe_unused pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags) +{ + int ret; + + mutex_lock(&data->update_lock); + ret = _pmbus_get_flags(data, page, flags); + mutex_unlock(&data->update_lock); + + return ret; +} + +#if IS_ENABLED(CONFIG_REGULATOR) +static int pmbus_regulator_is_enabled(struct regulator_dev *rdev) +{ + return pmbus_is_enabled(rdev_get_dev(rdev), rdev_get_id(rdev)); +} + +static int _pmbus_regulator_on_off(struct regulator_dev *rdev, bool enable) +{ + struct device *dev = rdev_get_dev(rdev); + struct i2c_client *client = to_i2c_client(dev->parent); + struct pmbus_data *data = i2c_get_clientdata(client); + u8 page = rdev_get_id(rdev); + int ret; + + mutex_lock(&data->update_lock); + ret = pmbus_update_byte_data(client, page, PMBUS_OPERATION, + PB_OPERATION_CONTROL_ON, + enable ? PB_OPERATION_CONTROL_ON : 0); + mutex_unlock(&data->update_lock); + + return ret; +} + +static int pmbus_regulator_enable(struct regulator_dev *rdev) +{ + return _pmbus_regulator_on_off(rdev, 1); +} + +static int pmbus_regulator_disable(struct regulator_dev *rdev) +{ + return _pmbus_regulator_on_off(rdev, 0); +} + +static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags) +{ + struct device *dev = rdev_get_dev(rdev); + struct i2c_client *client = to_i2c_client(dev->parent); + struct pmbus_data *data = i2c_get_clientdata(client); + + return pmbus_get_flags(data, rdev_get_id(rdev), flags); +} + static int pmbus_regulator_get_status(struct regulator_dev *rdev) { struct device *dev = rdev_get_dev(rdev); From patchwork Fri Feb 17 08:36:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naresh Solanki X-Patchwork-Id: 58420 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp770840wrn; Fri, 17 Feb 2023 00:38:20 -0800 (PST) X-Google-Smtp-Source: AK7set80HfZSXWN9P4C7gKrdCqNnmTpOnt6A+78HJKyHN/UCmhc/1ZkuCMtDIy2vQpCdNlgjEnWY X-Received: by 2002:a17:90b:2246:b0:235:31e9:e793 with SMTP id hk6-20020a17090b224600b0023531e9e793mr2261711pjb.13.1676623099884; Fri, 17 Feb 2023 00:38:19 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1676623099; cv=none; d=google.com; s=arc-20160816; b=YVZHd+5Lo+85eggw4TUhvBA4+6f32Ks2hxxgbAFWKb2FhmFIHiYWaz+2IjKbLoviqH 4I6mYjuqzHyqlQTrp2MklKKC0jdvweqeYV4P7mLK1J1dsXchUTniQ8DkLZ6gM8GQBWMK M32TUzNXpkyk9LGsSmYWnaTR0rN/QkUanIh4JoKyVpLb7qQq0HKdoxhuFCk95PG1S5Wy +g7FRP7bP7ZRCVsdqcHV6KtR1scJX2d1FwOM24lot1+uRPaLVZ0vCYepubeWhgbtK/2l J4+q7C5y6dZuSFGBwSS/V9W1jfRoMdtz7Q2gNODdFmQU3fhD8ThaDot7M1BFPBhV24Gv MWJQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=DY82imEcfFicloUzMXV5t4stt323TuRafcAwVY/x37M=; b=vTa4SjMyB6A/ecPmCiUu63/Z1IuCUyVfT6sCc4rIl+F6wZSD2w3XI6LId55NG/MjfT xrWQAUmegsRBA4LMej4hrmmYKAGCH+2ZbYGOKN7j9fZ2C1R88ni5cFWiRWtDQIsX1QCF 3z1mTfpnhbkYRTZtLf61wPNH4PdXrb2npsLMCq2AnEZs0I+pGq5R71UNVRiB+QtL1G4x F6LERj/8sPfsvaIz7JPAmJciaAnzUWee8TX+AmoSESQ0wbg8QFtdu1c+pEIEKmTcvDET 0aS/syUJK1cfj5ol4O22Vvnt73Sd4H+Wq6Y1ZTN4pJpwppp0TyyLAoEuAT/rqzCvgZoK h8vA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@9elements.com header.s=google header.b=L0EFWAsm; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=9elements.com Received: from out1.vger.email (out1.vger.email. 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[78.94.0.51]) by smtp.gmail.com with ESMTPSA id m17-20020a7bce11000000b003e209b45f6bsm4857021wmc.29.2023.02.17.00.36.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Feb 2023 00:36:38 -0800 (PST) From: Naresh Solanki X-Google-Original-From: Naresh Solanki To: Guenter Roeck , Jean Delvare Cc: linux-hwmon@vger.kernel.org, Patrick Rudolph , Naresh Solanki , linux-kernel@vger.kernel.org Subject: [PATCH v3 3/4] hwmon: (pmbus/core): Add interrupt support Date: Fri, 17 Feb 2023 09:36:30 +0100 Message-Id: <20230217083631.657430-3-Naresh.Solanki@9elements.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230217083631.657430-1-Naresh.Solanki@9elements.com> References: <20230217083631.657430-1-Naresh.Solanki@9elements.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1758066743599484317?= X-GMAIL-MSGID: =?utf-8?q?1758066743599484317?= From: Patrick Rudolph Implement PMBUS irq handler. Signed-off-by: Patrick Rudolph Signed-off-by: Naresh Solanki ... Changes in V3: - Remove pmbus word check for SMBALERT writes - Remove variable ret & use err instead. - Use dev_dbg_once instead of error. - Remove error print when writing to misc_status register. - Move client irq check to pmbus_irq_setup. --- drivers/hwmon/pmbus/pmbus.h | 2 +- drivers/hwmon/pmbus/pmbus_core.c | 78 ++++++++++++++++++++++++++++++++ 2 files changed, 79 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h index 713ea7915425..11e84e141126 100644 --- a/drivers/hwmon/pmbus/pmbus.h +++ b/drivers/hwmon/pmbus/pmbus.h @@ -26,7 +26,7 @@ enum pmbus_regs { PMBUS_CAPABILITY = 0x19, PMBUS_QUERY = 0x1A, - + PMBUS_SMBALERT_MASK = 0x1B, PMBUS_VOUT_MODE = 0x20, PMBUS_VOUT_COMMAND = 0x21, PMBUS_VOUT_TRIM = 0x22, diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index f8ac9016ea0e..d0415d5ac7d9 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -3105,6 +3105,80 @@ static int pmbus_regulator_register(struct pmbus_data *data) } #endif +static int pmbus_write_smbalert_mask(struct i2c_client *client, u8 page, u8 reg, u8 val) +{ + return pmbus_write_word_data(client, page, PMBUS_SMBALERT_MASK, reg | (val << 8)); +} + +static irqreturn_t pmbus_fault_handler(int irq, void *pdata) +{ + struct pmbus_data *data = pdata; + struct i2c_client *client = to_i2c_client(data->dev); + int i, status; + + mutex_lock(&data->update_lock); + for (i = 0; i < data->info->pages; i++) { + status = pmbus_read_status_word(client, i); + if (status < 0) { + mutex_unlock(&data->update_lock); + return status; + } + + if (status & ~(PB_STATUS_OFF | PB_STATUS_BUSY | PB_STATUS_POWER_GOOD_N)) + pmbus_clear_fault_page(client, i); + } + mutex_unlock(&data->update_lock); + + return IRQ_HANDLED; +} + +static int pmbus_irq_setup(struct i2c_client *client, struct pmbus_data *data) +{ + struct device *dev = &client->dev; + const struct pmbus_status_category *cat; + const struct pmbus_status_assoc *bit; + int i, j, err, func; + u8 mask; + + static const u8 misc_status[] = {PMBUS_STATUS_CML, PMBUS_STATUS_OTHER, + PMBUS_STATUS_MFR_SPECIFIC, PMBUS_STATUS_FAN_12, + PMBUS_STATUS_FAN_34}; + + if (!client->irq) + return 0; + + for (i = 0; i < data->info->pages; i++) { + func = data->info->func[i]; + + for (j = 0; j < ARRAY_SIZE(pmbus_status_flag_map); j++) { + cat = &pmbus_status_flag_map[j]; + if (!(func & cat->func)) + continue; + mask = 0; + for (bit = cat->bits; bit->pflag; bit++) + mask |= bit->pflag; + + err = pmbus_write_smbalert_mask(client, i, cat->reg, ~mask); + if (err) + dev_dbg_once(dev, "Failed to set smbalert for reg 0x%02x\n", + cat->reg); + } + + for (j = 0; j < ARRAY_SIZE(misc_status); j++) + pmbus_write_smbalert_mask(client, i, misc_status[j], 0xff); + } + + /* Register notifiers */ + err = devm_request_threaded_irq(dev, client->irq, NULL, pmbus_fault_handler, 0, + "pmbus-irq", data); + if (err) { + dev_err(dev, "failed to request an irq %d\n", err); + return err; + } + + return 0; +} + static struct dentry *pmbus_debugfs_dir; /* pmbus debugfs directory */ #if IS_ENABLED(CONFIG_DEBUG_FS) @@ -3467,6 +3541,10 @@ int pmbus_do_probe(struct i2c_client *client, struct pmbus_driver_info *info) if (ret) return ret; + ret = pmbus_irq_setup(client, data); + if (ret) + return ret; + ret = pmbus_init_debugfs(client, data); if (ret) dev_warn(dev, "Failed to register debugfs\n"); From patchwork Fri Feb 17 08:36:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naresh Solanki X-Patchwork-Id: 58422 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp771016wrn; Fri, 17 Feb 2023 00:38:57 -0800 (PST) X-Google-Smtp-Source: AK7set9EhI9F/qbk8RpFzdOmExf95HVTmNn/jtJtOL+J04AkWYvAUcqg8fU0AhbIPeGifoPOG+bf X-Received: by 2002:a17:902:f693:b0:196:7d1b:f1c0 with SMTP id l19-20020a170902f69300b001967d1bf1c0mr11587579plg.18.1676623137106; Fri, 17 Feb 2023 00:38:57 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1676623137; cv=none; d=google.com; s=arc-20160816; b=QctC9VNY50NNnfwBZCEFc2lmp8iUKu08FG+SIfR+1VjL5b/kxCwABSOOl7FTnlV94j IPhy0tVrsbUAGVP+aZNDjWxXATvdGgG7HMPQtHBsADfLig3TwbEWrLvESQKC6a1LGkbu J9SxxyQHA42JOkqryYpmt+ctth4/0DBYqAyxcs3k+EiZ0G9N5WOAM8YB6M4eSO+4HjWl CABkX4zEyBHY15Z0VtYXHNJrnConSp2lJRfJtu8X5m3zxfB0andybZR5xB8rtinH+dj1 sqQoaugHr4+OJgudjbRRSGdp8ikX8aQlmTb8UamOrmJi36vpujcw9iRCio73WLrZZicX REIw== ARC-Message-Signature: i=1; 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[78.94.0.51]) by smtp.gmail.com with ESMTPSA id m17-20020a7bce11000000b003e209b45f6bsm4857021wmc.29.2023.02.17.00.36.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Feb 2023 00:36:39 -0800 (PST) From: Naresh Solanki X-Google-Original-From: Naresh Solanki To: Guenter Roeck , Jean Delvare Cc: linux-hwmon@vger.kernel.org, Patrick Rudolph , Naresh Solanki , linux-kernel@vger.kernel.org Subject: [PATCH v3 4/4] hwmon: (pmbus/core): Notify hwmon events Date: Fri, 17 Feb 2023 09:36:31 +0100 Message-Id: <20230217083631.657430-4-Naresh.Solanki@9elements.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230217083631.657430-1-Naresh.Solanki@9elements.com> References: <20230217083631.657430-1-Naresh.Solanki@9elements.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1758066782424336942?= X-GMAIL-MSGID: =?utf-8?q?1758066782424336942?= From: Patrick Rudolph Notify hwmon events using the pmbus irq handler. Signed-off-by: Patrick Rudolph Signed-off-by: Naresh Solanki ... Changes in V3: - Remove empty line - locked version of pmbus_get_flags Changes in V2 - Remove __maybe_unsed attribute as its not needed. --- drivers/hwmon/pmbus/pmbus_core.c | 48 ++++++++++++++++++++++++++++---- 1 file changed, 43 insertions(+), 5 deletions(-) diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index d0415d5ac7d9..2d10a354fe7a 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -2761,7 +2761,35 @@ static int __maybe_unused pmbus_is_enabled(struct device *dev, u8 page) return !!(ret & PB_OPERATION_CONTROL_ON); } -static int _pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags) +#define to_dev_attr(_dev_attr) \ + container_of(_dev_attr, struct device_attribute, attr) + +static void pmbus_notify(struct pmbus_data *data, int page, int reg, int flags) +{ + int i; + + for (i = 0; i < data->num_attributes; i++) { + struct device_attribute *da = to_dev_attr(data->group.attrs[i]); + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + int index = attr->index; + u16 smask = pb_index_to_mask(index); + u8 spage = pb_index_to_page(index); + u16 sreg = pb_index_to_reg(index); + + if (reg == sreg && page == spage && (smask & flags)) { + dev_dbg(data->dev, "sysfs notify: %s", da->attr.name); + sysfs_notify(&data->dev->kobj, NULL, da->attr.name); + kobject_uevent(&data->dev->kobj, KOBJ_CHANGE); + flags &= ~smask; + } + + if (!flags) + break; + } +} + +static int _pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags, + bool notify) { int i, status; const struct pmbus_status_category *cat; @@ -2785,6 +2813,10 @@ static int _pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flag if (status & bit->pflag) *flags |= bit->rflag; } + + if (notify && status) + pmbus_notify(data, page, cat->reg, status); + } /* @@ -2828,12 +2860,13 @@ static int _pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flag return 0; } -static int __maybe_unused pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags) +static int __maybe_unused pmbus_get_flags(struct pmbus_data *data, u8 page, unsigned int *flags, + bool notify) { int ret; mutex_lock(&data->update_lock); - ret = _pmbus_get_flags(data, page, flags); + ret = _pmbus_get_flags(data, page, flags, notify); mutex_unlock(&data->update_lock); return ret; @@ -2878,7 +2911,7 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned struct i2c_client *client = to_i2c_client(dev->parent); struct pmbus_data *data = i2c_get_clientdata(client); - return pmbus_get_flags(data, rdev_get_id(rdev), flags); + return pmbus_get_flags(data, rdev_get_id(rdev), flags, false); } static int pmbus_regulator_get_status(struct regulator_dev *rdev) @@ -3114,10 +3147,14 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata) { struct pmbus_data *data = pdata; struct i2c_client *client = to_i2c_client(data->dev); - int i, status; + int i, status, ret; mutex_lock(&data->update_lock); for (i = 0; i < data->info->pages; i++) { + ret = _pmbus_get_flags(data, i, &status, true); + if (ret) + return ret; + status = pmbus_read_status_word(client, i); if (status < 0) { mutex_unlock(&data->update_lock); @@ -3126,6 +3163,7 @@ static irqreturn_t pmbus_fault_handler(int irq, void *pdata) if (status & ~(PB_STATUS_OFF | PB_STATUS_BUSY | PB_STATUS_POWER_GOOD_N)) pmbus_clear_fault_page(client, i); + } mutex_unlock(&data->update_lock);