From 3bce5377ef66a8700dcf7a9cb89b7aeb99326cb7 Mon Sep 17 00:00:00 2001 From: Tim Harvey Date: Fri, 15 May 2020 10:57:08 -0700 Subject: hwmon: Add Gateworks System Controller support The Gateworks System Controller has a hwmon sub-component that exposes up to 16 ADC's, some of which are temperature sensors, others which are voltage inputs. The ADC configuration (register mapping and name) is configured via device-tree and varies board to board. Signed-off-by: Tim Harvey Reviewed-by: Guenter Roeck Signed-off-by: Lee Jones --- include/linux/platform_data/gsc_hwmon.h | 44 +++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 include/linux/platform_data/gsc_hwmon.h (limited to 'include/linux/platform_data') diff --git a/include/linux/platform_data/gsc_hwmon.h b/include/linux/platform_data/gsc_hwmon.h new file mode 100644 index 000000000000..ec1611aff863 --- /dev/null +++ b/include/linux/platform_data/gsc_hwmon.h @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _GSC_HWMON_H +#define _GSC_HWMON_H + +enum gsc_hwmon_mode { + mode_temperature, + mode_voltage, + mode_voltage_raw, + mode_max, +}; + +/** + * struct gsc_hwmon_channel - configuration parameters + * @reg: I2C register offset + * @mode: channel mode + * @name: channel name + * @mvoffset: voltage offset + * @vdiv: voltage divider array (2 resistor values in milli-ohms) + */ +struct gsc_hwmon_channel { + unsigned int reg; + unsigned int mode; + const char *name; + unsigned int mvoffset; + unsigned int vdiv[2]; +}; + +/** + * struct gsc_hwmon_platform_data - platform data for gsc_hwmon driver + * @channels: pointer to array of gsc_hwmon_channel structures + * describing channels + * @nchannels: number of elements in @channels array + * @vreference: voltage reference (mV) + * @resolution: ADC bit resolution + * @fan_base: register base for FAN controller + */ +struct gsc_hwmon_platform_data { + const struct gsc_hwmon_channel *channels; + int nchannels; + unsigned int resolution; + unsigned int vreference; + unsigned int fan_base; +}; +#endif -- cgit v1.2.3-59-g8ed1b