pinctrl: tegra: print better error messages

When an attempt is made to configure an unsupported option on a pin,
print the DT property name of that option, so it's easier to debug
what the problem is.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-tegra.c b/drivers/pinctrl/pinctrl-tegra.c
index 0faa092..2d43bff 100644 (file)
--- a/drivers/pinctrl/pinctrl-tegra.c
+++ b/drivers/pinctrl/pinctrl-tegra.c
@@ -413,10 +413,21 @@ static int tegra_pinconf_reg(struct tegra_pmx *pmx,
        }
 
        if (*reg < 0 || *bit > 31) {
-               if (report_err)
+               if (report_err) {
+                       const char *prop = "unknown";
+                       int i;
+
+                       for (i = 0; i < ARRAY_SIZE(cfg_params); i++) {
+                               if (cfg_params[i].param == param) {
+                                       prop = cfg_params[i].property;
+                                       break;
+                               }
+                       }
+
                        dev_err(pmx->dev,
-                               "Config param %04x not supported on group %s\n",
-                               param, g->name);
+                               "Config param %04x (%s) not supported on group %s\n",
+                               param, prop, g->name);
+               }
                return -ENOTSUPP;
        }