From bf800ca415676085813ad53899264618a60db471 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 29 Sep 2023 14:21:01 +0200 Subject: pinctrl: tegra: Display pin function in pinconf-groups 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 Tested-by: Luca Ceresoli Link: https://lore.kernel.org/r/20230929122101.466266-1-thierry.reding@gmail.com Signed-off-by: Linus Walleij --- drivers/pinctrl/tegra/pinctrl-tegra.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.c b/drivers/pinctrl/tegra/pinctrl-tegra.c index 6bf8db424bec..ccfa3870a67d 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra.c @@ -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, -- cgit