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
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