diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 64fc00ade5ca..741704203e52 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -802,7 +802,7 @@ config SENSORS_GXP_FAN_CTRL If you say yes here you get support for GXP fan control functionality. The GXP controls fan function via the CPLD through the use of PWM - registers. This driver reports status and pwm setting of the fans. + registers. This driver enables pwm setting of the fans. config SENSORS_HIH6130 tristate "Honeywell Humidicon HIH-6130 humidity/temperature sensor" diff --git a/drivers/hwmon/gxp-fan-ctrl.c b/drivers/hwmon/gxp-fan-ctrl.c index 86e7bafd3a38..64f85d7e748e 100644 --- a/drivers/hwmon/gxp-fan-ctrl.c +++ b/drivers/hwmon/gxp-fan-ctrl.c @@ -1,59 +1,16 @@ // SPDX-License-Identifier: GPL-2.0-only -/* Copyright (C) 2022 Hewlett-Packard Enterprise Development Company, L.P. */ +/* Copyright (C) 2023 Hewlett-Packard Enterprise Development Company, L.P. */ -#include #include #include #include #include #include -#define OFS_FAN_INST 0 /* Is 0 because plreg base will be set at INST */ -#define OFS_FAN_FAIL 2 /* Is 2 bytes after base */ -#define OFS_SEVSTAT 0 /* Is 0 because fn2 base will be set at SEVSTAT */ -#define POWER_BIT 24 - struct gxp_fan_ctrl_drvdata { void __iomem *base; - void __iomem *plreg; - void __iomem *fn2; }; -static bool fan_installed(struct device *dev, int fan) -{ - struct gxp_fan_ctrl_drvdata *drvdata = dev_get_drvdata(dev); - u8 val; - - val = readb(drvdata->plreg + OFS_FAN_INST); - - return !!(val & BIT(fan)); -} - -static long fan_failed(struct device *dev, int fan) -{ - struct gxp_fan_ctrl_drvdata *drvdata = dev_get_drvdata(dev); - u8 val; - - val = readb(drvdata->plreg + OFS_FAN_FAIL); - - return !!(val & BIT(fan)); -} - -static long fan_enabled(struct device *dev, int fan) -{ - struct gxp_fan_ctrl_drvdata *drvdata = dev_get_drvdata(dev); - u32 val; - - /* - * Check the power status as if the platform is off the value - * reported for the PWM will be incorrect. Report fan as - * disabled. - */ - val = readl(drvdata->fn2 + OFS_SEVSTAT); - - return !!((val & BIT(POWER_BIT)) && fan_installed(dev, fan)); -} - static int gxp_pwm_write(struct device *dev, u32 attr, int channel, long val) { struct gxp_fan_ctrl_drvdata *drvdata = dev_get_drvdata(dev); @@ -80,37 +37,11 @@ static int gxp_fan_ctrl_write(struct device *dev, enum hwmon_sensor_types type, } } -static int gxp_fan_read(struct device *dev, u32 attr, int channel, long *val) -{ - switch (attr) { - case hwmon_fan_enable: - *val = fan_enabled(dev, channel); - return 0; - case hwmon_fan_fault: - *val = fan_failed(dev, channel); - return 0; - default: - return -EOPNOTSUPP; - } -} - static int gxp_pwm_read(struct device *dev, u32 attr, int channel, long *val) { struct gxp_fan_ctrl_drvdata *drvdata = dev_get_drvdata(dev); - u32 reg; - /* - * Check the power status of the platform. If the platform is off - * the value reported for the PWM will be incorrect. In this case - * report a PWM of zero. - */ - - reg = readl(drvdata->fn2 + OFS_SEVSTAT); - - if (reg & BIT(POWER_BIT)) - *val = fan_installed(dev, channel) ? readb(drvdata->base + channel) : 0; - else - *val = 0; + *val = readb(drvdata->base + channel); return 0; } @@ -119,8 +50,6 @@ static int gxp_fan_ctrl_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { switch (type) { - case hwmon_fan: - return gxp_fan_read(dev, attr, channel, val); case hwmon_pwm: return gxp_pwm_read(dev, attr, channel, val); default: @@ -135,16 +64,6 @@ static umode_t gxp_fan_ctrl_is_visible(const void *_data, umode_t mode = 0; switch (type) { - case hwmon_fan: - switch (attr) { - case hwmon_fan_enable: - case hwmon_fan_fault: - mode = 0444; - break; - default: - break; - } - break; case hwmon_pwm: switch (attr) { case hwmon_pwm_input: @@ -168,15 +87,6 @@ static const struct hwmon_ops gxp_fan_ctrl_ops = { }; static const struct hwmon_channel_info * const gxp_fan_ctrl_info[] = { - HWMON_CHANNEL_INFO(fan, - HWMON_F_FAULT | HWMON_F_ENABLE, - HWMON_F_FAULT | HWMON_F_ENABLE, - HWMON_F_FAULT | HWMON_F_ENABLE, - HWMON_F_FAULT | HWMON_F_ENABLE, - HWMON_F_FAULT | HWMON_F_ENABLE, - HWMON_F_FAULT | HWMON_F_ENABLE, - HWMON_F_FAULT | HWMON_F_ENABLE, - HWMON_F_FAULT | HWMON_F_ENABLE), HWMON_CHANNEL_INFO(pwm, HWMON_PWM_INPUT, HWMON_PWM_INPUT, @@ -211,18 +121,6 @@ static int gxp_fan_ctrl_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(drvdata->base), "failed to map base\n"); - drvdata->plreg = devm_platform_ioremap_resource_byname(pdev, - "pl"); - if (IS_ERR(drvdata->plreg)) - return dev_err_probe(dev, PTR_ERR(drvdata->plreg), - "failed to map plreg\n"); - - drvdata->fn2 = devm_platform_ioremap_resource_byname(pdev, - "fn2"); - if (IS_ERR(drvdata->fn2)) - return dev_err_probe(dev, PTR_ERR(drvdata->fn2), - "failed to map fn2\n"); - hwmon_dev = devm_hwmon_device_register_with_info(&pdev->dev, "hpe_gxp_fan_ctrl", drvdata,