Commit d1cd5b51 authored by Prathamesh Shete's avatar Prathamesh Shete Committed by Linus Walleij
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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: default avatarPrathamesh Shete <pshete@nvidia.com>
Acked-by: default avatarThierry Reding <treding@nvidia.com>
Reviewed-by: default avatarJon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20230714113547.15384-1-pshete@nvidia.com


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent f1476242

drivers/pinctrl/tegra/pinctrl-tegra.c

+17 −2
Original line number Diff line number Diff line
@@ -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;
@@ -633,10 +640,18 @@ static void tegra_pinconf_group_dbg_show(struct pinctrl_dev *pctldev, 
		val >>= bit;

		val &= (1 << width) - 1;



		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);

		}

	}

}



static void tegra_pinconf_config_dbg_show(struct pinctrl_dev *pctldev,

					  struct seq_file *s,

drivers/pinctrl/tegra/pinctrl-tegra.h

+2 −0
Original line number Diff line number Diff line
@@ -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 {