Am Mittwoch, 9. Januar 2019, 14:10:34 CET schrieb Stefan Mavrodiev:
> On 1/9/19 3:07 PM, Heiko Stübner wrote:
> > Hi Stefan, Lee,
> >
> > Am Dienstag, 2. Oktober 2018, 09:38:29 CET schrieb Stefan Mavrodiev:
> >> RK805 has SLEEP signal, which can put the device into SLEEP or OFF
> >> mode. The default is SLEEP mode.
> >>
> >> However, when the kernel performs power-off (actually the ATF) the
> >> device will not go fully off and this will result in higher power
> >> consumption and inability to wake the device with RTC alarm.
> >>
> >> The solution is to enable pm_power_off_prepare function, which will
> >> configure SLEEP pin for OFF function.
> >>
> >> Signed-off-by: Stefan Mavrodiev <[email protected]>
> >
> > just found this while cleaning my inbox and this change looks
> > significant and it seems hasn't been applied yet.
> >
> > I guess this is still relevant, right?
>
> Yes, but I guess it's out-of-sync with the latest kernel.
you could rebase and resend it :-)
> >> ---
> >>
> >> drivers/mfd/rk808.c | 24 ++++++++++++++++++++++++
> >> 1 file changed, 24 insertions(+)
> >>
> >> diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c
> >> index 216fbf6..50f3f78 100644
> >> --- a/drivers/mfd/rk808.c
> >> +++ b/drivers/mfd/rk808.c
> >> @@ -387,6 +387,25 @@ static void rk805_device_shutdown(void)
> >>
> >> dev_err(&rk808_i2c_client->dev, "power off error!\n");
> >>
> >> }
> >>
> >> +static void rk805_device_shutdown_prepare(void)
> >> +{
> >> + int ret;
> >> + struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
> >> +
> >> + if (!rk808) {
> >> + dev_warn(&rk808_i2c_client->dev,
> >> + "have no rk805, so do nothing here\n");
> >> +
> >> + return;
> >> + }
> >> +
> >> + ret = regmap_update_bits(rk808->regmap,
> >> + RK805_GPIO_IO_POL_REG,
> >> + SLP_SD_MSK, SHUTDOWN_FUN);
> >> + if (ret)
> >> + dev_err(&rk808_i2c_client->dev, "power off error!\n");
> >> +}
> >> +
> >>
> >> static void rk808_device_shutdown(void)
> >> {
> >>
> >> int ret;
> >>
> >> @@ -549,6 +568,10 @@ static int rk808_probe(struct i2c_client *client,
> >>
> >> if (pm_off && !pm_power_off) {
> >>
> >> rk808_i2c_client = client;
> >> pm_power_off = pm_pwroff_fn;
> >>
> >> + } else if (pm_off && !pm_power_off_prepare &&
> >> + rk808->variant == RK805_ID) {
> >> + rk808_i2c_client = client;
> >> + pm_power_off_prepare = rk805_device_shutdown_prepare;
> >>
> >> }
> >>
> >> return 0;
> >>
> >> @@ -564,6 +587,7 @@ static int rk808_remove(struct i2c_client *client)
> >>
> >> regmap_del_irq_chip(client->irq, rk808->irq_data);
> >> pm_power_off = NULL;
> >>
> >> + pm_power_off_prepare = NULL;
> >>
> >> return 0;
> >>
> >> }
