From d1cd5b51bc9152dc2b63c5f843590272d6694d50 Mon Sep 17 00:00:00 2001 From: Prathamesh Shete Date: Fri, 14 Jul 2023 17:05:47 +0530 Subject: pinctrl: tegra: Add support to display pin function 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 Acked-by: Thierry Reding Reviewed-by: Jon Hunter Link: https://lore.kernel.org/r/20230714113547.15384-1-pshete@nvidia.com Signed-off-by: Linus Walleij --- drivers/pinctrl/tegra/pinctrl-tegra.c | 19 +++++++++++++++++-- drivers/pinctrl/tegra/pinctrl-tegra.h | 2 ++ 2 files changed, 19 insertions(+), 2 deletions(-) (limited to 'drivers/pinctrl/tegra') diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.c b/drivers/pinctrl/tegra/pinctrl-tegra.c index 4547cf66d03b..cb1d67239cd0 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra.c @@ -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); + } } } diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.h b/drivers/pinctrl/tegra/pinctrl-tegra.h index b3289bdf727d..e728efeaa4de 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra.h +++ b/drivers/pinctrl/tegra/pinctrl-tegra.h @@ -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 { -- cgit v1.2.3