diff options
| author | Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> | 2020-12-17 17:43:36 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2021-02-15 13:43:26 +0300 |
| commit | 2ad74f40dacc411546d737ce92197384cd8587bd (patch) | |
| tree | eb6246818cd5d60802dcf85b2dcec55f83b5a513 /drivers/pinctrl | |
| parent | 858093f73634393931743acf7dd398b92935753e (diff) | |
| download | linux-2ad74f40dacc411546d737ce92197384cd8587bd.tar.xz | |
gpio: visconti: Add Toshiba Visconti GPIO support
Add the GPIO driver for Toshiba Visconti ARM SoCs.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Reviewed-by: Punit Agrawal <punit1.agrawal@toshiba.co.jp>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/visconti/pinctrl-common.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/pinctrl/visconti/pinctrl-common.c b/drivers/pinctrl/visconti/pinctrl-common.c index 0cb10b7b4430..21c7e0d18fea 100644 --- a/drivers/pinctrl/visconti/pinctrl-common.c +++ b/drivers/pinctrl/visconti/pinctrl-common.c @@ -245,11 +245,34 @@ static int visconti_set_mux(struct pinctrl_dev *pctldev, return 0; } +static int visconti_gpio_request_enable(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned int pin) +{ + struct visconti_pinctrl *priv = pinctrl_dev_get_drvdata(pctldev); + const struct visconti_mux *gpio_mux = &priv->devdata->gpio_mux[pin]; + unsigned long flags; + unsigned int val; + + dev_dbg(priv->dev, "%s: pin = %d\n", __func__, pin); + + /* update mux */ + spin_lock_irqsave(&priv->lock, flags); + val = readl(priv->base + gpio_mux->offset); + val &= ~gpio_mux->mask; + val |= gpio_mux->val; + writel(val, priv->base + gpio_mux->offset); + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + static const struct pinmux_ops visconti_pinmux_ops = { .get_functions_count = visconti_get_functions_count, .get_function_name = visconti_get_function_name, .get_function_groups = visconti_get_function_groups, .set_mux = visconti_set_mux, + .gpio_request_enable = visconti_gpio_request_enable, .strict = true, }; |