| Message ID | 20201214112437.18757-4-m.szyprowski@samsung.com |
|---|---|
| State | Superseded, archived |
| Delegated to: | Neil Armstrong |
| Headers | show |
| Series | VIM3: add support for checking 'Function' button state | expand |
On 14/12/2020 12:24, Marek Szyprowski wrote: > The driver skips hardware initialization if it is already configured by > the earlier bootloader stage (BL30). Skip the initialization only if the > hardware is really initialized and enabled. > > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> > Change-Id: I3e2e2d270ad3e7e7f38e2bc3ce2a924a47b164af Ditto > --- > drivers/adc/meson-saradc.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/adc/meson-saradc.c b/drivers/adc/meson-saradc.c > index 998cef24d88..ce7ae990ad0 100644 > --- a/drivers/adc/meson-saradc.c > +++ b/drivers/adc/meson-saradc.c > @@ -512,8 +512,11 @@ static int meson_saradc_init(struct meson_saradc_priv *priv) > * reading the temperature sensor. > */ > regmap_read(priv->regmap, MESON_SAR_ADC_REG3, ®val); > - if (regval & MESON_SAR_ADC_REG3_BL30_INITIALIZED) > - return 0; > + if (regval & MESON_SAR_ADC_REG3_BL30_INITIALIZED) { > + regmap_read(priv->regmap, MESON_SAR_ADC_REG3, ®val); > + if (regval & MESON_SAR_ADC_REG3_ADC_EN) > + return 0; > + } > > meson_saradc_stop_sample_engine(priv); > > Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
On 12/15/20 3:54 AM, Neil Armstrong wrote: > On 14/12/2020 12:24, Marek Szyprowski wrote: >> The driver skips hardware initialization if it is already configured by >> the earlier bootloader stage (BL30). Skip the initialization only if the >> hardware is really initialized and enabled. >> >> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> >> Change-Id: I3e2e2d270ad3e7e7f38e2bc3ce2a924a47b164af > > Ditto > >> --- >> drivers/adc/meson-saradc.c | 7 +++++-- >> 1 file changed, 5 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/adc/meson-saradc.c b/drivers/adc/meson-saradc.c >> index 998cef24d88..ce7ae990ad0 100644 >> --- a/drivers/adc/meson-saradc.c >> +++ b/drivers/adc/meson-saradc.c >> @@ -512,8 +512,11 @@ static int meson_saradc_init(struct meson_saradc_priv *priv) >> * reading the temperature sensor. >> */ >> regmap_read(priv->regmap, MESON_SAR_ADC_REG3, ®val); >> - if (regval & MESON_SAR_ADC_REG3_BL30_INITIALIZED) >> - return 0; >> + if (regval & MESON_SAR_ADC_REG3_BL30_INITIALIZED) { >> + regmap_read(priv->regmap, MESON_SAR_ADC_REG3, ®val); >> + if (regval & MESON_SAR_ADC_REG3_ADC_EN) >> + return 0; >> + } >> >> meson_saradc_stop_sample_engine(priv); >> >> > > Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> >
diff --git a/drivers/adc/meson-saradc.c b/drivers/adc/meson-saradc.c index 998cef24d88..ce7ae990ad0 100644 --- a/drivers/adc/meson-saradc.c +++ b/drivers/adc/meson-saradc.c @@ -512,8 +512,11 @@ static int meson_saradc_init(struct meson_saradc_priv *priv) * reading the temperature sensor. */ regmap_read(priv->regmap, MESON_SAR_ADC_REG3, ®val); - if (regval & MESON_SAR_ADC_REG3_BL30_INITIALIZED) - return 0; + if (regval & MESON_SAR_ADC_REG3_BL30_INITIALIZED) { + regmap_read(priv->regmap, MESON_SAR_ADC_REG3, ®val); + if (regval & MESON_SAR_ADC_REG3_ADC_EN) + return 0; + } meson_saradc_stop_sample_engine(priv);
The driver skips hardware initialization if it is already configured by the earlier bootloader stage (BL30). Skip the initialization only if the hardware is really initialized and enabled. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Change-Id: I3e2e2d270ad3e7e7f38e2bc3ce2a924a47b164af --- drivers/adc/meson-saradc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)