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pinctrl: tegra: Add support to display pin function

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The current function for a given pin is not displayed via the debugfs.
Add support to display the current function that is set for each pin.

Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20230714113547.15384-1-pshete@nvidia.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Prathamesh Shete 2023-07-14 17:05:47 +05:30 committed by Linus Walleij
parent f147624220
commit d1cd5b51bc
2 changed files with 19 additions and 2 deletions
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19
drivers/pinctrl/tegra/pinctrl-tegra.c
View File

@ -96,6 +96,7 @@ static const struct cfg_param {
{"nvidia,slew-rate-falling", TEGRA_PINCONF_PARAM_SLEW_RATE_FALLING},
{"nvidia,slew-rate-rising", TEGRA_PINCONF_PARAM_SLEW_RATE_RISING},
{"nvidia,drive-type", TEGRA_PINCONF_PARAM_DRIVE_TYPE},
{"nvidia,function", TEGRA_PINCONF_PARAM_FUNCTION},
};
static int tegra_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
@ -470,6 +471,12 @@ static int tegra_pinconf_reg(struct tegra_pmx *pmx,
*bit = g->drvtype_bit;
*width = 2;
break;
case TEGRA_PINCONF_PARAM_FUNCTION:
*bank = g->mux_bank;
*reg = g->mux_reg;
*bit = g->mux_bit;
*width = 2;
break;
default:
dev_err(pmx->dev, "Invalid config param %04x\n", param);
return -ENOTSUPP;
@ -633,8 +640,16 @@ static void tegra_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
val >>= bit;
val &= (1 << width) - 1;
seq_printf(s, "\n\t%s=%u",
strip_prefix(cfg_params[i].property), val);
if (cfg_params[i].param == TEGRA_PINCONF_PARAM_FUNCTION) {
u8 idx = pmx->soc->groups[group].funcs[val];
seq_printf(s, "\n\t%s=%s",
strip_prefix(cfg_params[i].property),
pmx->functions[idx].name);
} else {
seq_printf(s, "\n\t%s=%u",
strip_prefix(cfg_params[i].property), val);
}
}
}

2
drivers/pinctrl/tegra/pinctrl-tegra.h
View File

@ -54,6 +54,8 @@ enum tegra_pinconf_param {
TEGRA_PINCONF_PARAM_SLEW_RATE_RISING,
/* argument: Integer, range is HW-dependant */
TEGRA_PINCONF_PARAM_DRIVE_TYPE,
/* argument: pinmux settings */
TEGRA_PINCONF_PARAM_FUNCTION,
};
enum tegra_pinconf_pull {