On 02/05/16 13:17, Laxman Dewangan wrote: > NVIDIA Tegra210 supports the IO pads which can operate at 1.8V > or 3.3V I/O voltage levels. Also the IO pads can be configured > for power down state if it is not used. SW needs to configure the > voltage level of IO pads based on IO rail voltage and its power > state based on platform usage. > > The voltage and power state configurations of pads are provided > through pin control frameworks. Add pin control driver for Tegra's > IO pads' voltage and power state configurations. > > Signed-off-by: Laxman Dewangan <ldewangan@xxxxxxxxxx> > > --- > Changes from V1: > - Use the generic pincontrol property for low power enable/disable. > - sync with latest and remove all MODULE* macros > - Use renamed APIs form PMC > --- > drivers/pinctrl/tegra/Makefile | 1 + > drivers/pinctrl/tegra/pinctrl-tegra210-io-pad.c | 301 ++++++++++++++++++++++++ > 2 files changed, 302 insertions(+) > create mode 100644 drivers/pinctrl/tegra/pinctrl-tegra210-io-pad.c [snip] > +static int tegra_io_pad_pinconf_get(struct pinctrl_dev *pctldev, > + unsigned int pin, unsigned long *config) > +{ > + struct tegra_io_pads_info *tiopi = pinctrl_dev_get_drvdata(pctldev); > + int param = pinconf_to_config_param(*config); > + struct tegra_io_pads_cfg_info *pad_cfg = &tiopi->pads_cfg[pin]; > + int pad_id = pad_cfg->pad_id; > + int arg = 0; > + int ret; > + > + switch (param) { > + case TEGRA_IO_PAD_POWER_SOURCE_VOLTAGE: > + ret = tegra_io_pads_get_configured_voltage(pad_id); > + if (ret < 0) > + return ret; > + arg = (ret = 3300000) ? 1 : 0; This should be (ret == 3300000). Cheers Jon -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html