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pinctrl: tegra: Display pin function in pinconf-groups

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The function that a pin is muxed to can be read from the top-level
pinctrl-maps debugfs file. However, this only reflects the values that
were specified in device tree, so they will only show deviations from
the hardware default setting. Display the current pinmux setting in the
per-controller pinconf-groups debugfs file along with the rest of the
per-pin configuration settings.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://lore.kernel.org/r/20230929122101.466266-1-thierry.reding@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Thierry Reding 2023-09-29 14:21:01 +02:00 committed by Linus Walleij
parent b85ea95d08
commit bf800ca415
1 changed files with 8 additions and 0 deletions
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8
drivers/pinctrl/tegra/pinctrl-tegra.c
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@ -636,6 +636,14 @@ static void tegra_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
seq_printf(s, "\n\t%s=%u",
strip_prefix(cfg_params[i].property), val);
}
if (g->mux_reg >= 0) {
/* read pinmux function and dump to seq_file */
val = pmx_readl(pmx, g->mux_bank, g->mux_reg);
val = g->funcs[(val >> g->mux_bit) & 0x3];
seq_printf(s, "\n\tfunction=%s", pmx->functions[val].name);
}
}
static void tegra_pinconf_config_dbg_show(struct pinctrl_dev *pctldev,