Hi, On 11/16/21 12:14, Andy Shevchenko wrote: > On Sun, Nov 14, 2021 at 7:04 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote: >> >> From: Yauhen Kharuzhy <jekhor@xxxxxxxxx> >> >> Add a "linux,pump-express-vbus-max" property which indicates if the Pump >> Express+ protocol should be used to increase the charging protocol. >> >> If this new property is set and a DCP charger is detected then request >> a higher charging voltage through the Pump Express+ protocol. >> >> So far this new property is only used on X86/ACPI (non devicetree) devs, >> IOW it is not used in actual devicetree files. The devicetree-bindings >> maintainers have requested properties like these to not be added to the >> devicetree-bindings, so the new property is deliberately not added >> to the existing devicetree-bindings. >> >> Changes by Hans de Goede: >> - Port to my bq25890 patch-series + various cleanups >> - Make behavior configurable through a new "linux,pump-express-vbus-max" >> device-property >> - Sleep 1 second before re-checking the Vbus voltage after requesting >> it to be raised, to ensure that the ADC has time to sampled the new Vbus >> - Add VBUSV bq25890_tables[] entry and use it in bq25890_get_vbus_voltage() >> - Tweak commit message > > ... > >> +#define PUMP_EXPRESS_START_DELAY (5 * HZ) >> +#define PUMP_EXPRESS_MAX_TRIES 6 >> +#define PUMP_EXPRESS_VBUS_MARGIN 1000000 > > Units? Perhaps "_uV"? > > ... > >> + dev_dbg(bq->dev, "input voltage = %d mV\n", voltage); > > Just to be sure, is it indeed "mV" and not "uV"? It is uV, will fix for the next version. > > ... > >> + while (bq25890_field_read(bq, F_PUMPX_UP) == 1) >> + msleep(100); > > Infinite loop? > > Sounds like a good candidate to switch to read_poll_timeout() // note> it accepts any type of (op) with a variadic number of args. Good catch, will fix. > > ... > >> +error: > > error_print: ? > >> + dev_err(bq->dev, "Failed to request hi-voltage charging\n"); > > ... > >> + ret = device_property_read_u32(bq->dev, "linux,pump-express-vbus-max", >> + &bq->pump_express_vbus_max); >> + if (ret < 0) >> + bq->pump_express_vbus_max = 0; > > Isn't it 0 by default? > > Anyway, for all optional properties one may use > > bq->...property... = $default; > device_property_read_u32(bq->dev, "linux,...property...", &bq->...property...); > > I.e. no conditional needed. Ack, will fix. Regards, Hans
