[PATCH v1 2/3] pinctrl: tegra: Only set the gpio range if needed
From: Tomeu Vizoso <hidden>
Date: 2015-07-01 12:47:54
Also in:
linux-gpio, linux-tegra, lkml
Subsystem:
pin control subsystem, the rest · Maintainers:
Linus Walleij, Linus Torvalds
If the gpio DT node has the gpio-ranges property, the range will be added by the gpio core and doesn't need to be added by the pinctrl driver. By having the gpio-ranges property, we have an explicit dependency from the gpio node to the pinctrl node and we can stop using the deprecated pinctrl_add_gpio_range() function. Signed-off-by: Tomeu Vizoso <redacted> --- drivers/pinctrl/pinctrl-tegra.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/pinctrl/pinctrl-tegra.c b/drivers/pinctrl/pinctrl-tegra.c
index 0f982b8..0fd7fd2 100644
--- a/drivers/pinctrl/pinctrl-tegra.c
+++ b/drivers/pinctrl/pinctrl-tegra.c@@ -624,6 +624,22 @@ static struct pinctrl_desc tegra_pinctrl_desc = { .owner = THIS_MODULE, }; +static bool gpio_node_has_range(void) +{ + struct device_node *np; + bool has_prop = false; + + np = of_find_compatible_node(NULL, NULL, "nvidia,tegra30-gpio"); + if (!np) + return has_prop; + + has_prop = of_find_property(np, "gpio-ranges", NULL); + + of_node_put(np); + + return has_prop; +} + int tegra_pinctrl_probe(struct platform_device *pdev, const struct tegra_pinctrl_soc_data *soc_data) {
@@ -708,7 +724,8 @@ int tegra_pinctrl_probe(struct platform_device *pdev, return PTR_ERR(pmx->pctl); } - pinctrl_add_gpio_range(pmx->pctl, &tegra_pinctrl_gpio_range); + if (!gpio_node_has_range()) + pinctrl_add_gpio_range(pmx->pctl, &tegra_pinctrl_gpio_range); platform_set_drvdata(pdev, pmx);
--
2.4.1