diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c b/drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c index cf72576b6c..b37b517fe5 100644 --- a/drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c +++ b/drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c @@ -72,6 +72,47 @@ static int meson_gx_pinmux_group_set(struct udevice *dev, return 0; } +static int meson_gx_pinmux_get(struct udevice *dev, + unsigned int selector, + char *buf, int size) +{ + struct meson_pinctrl *priv = dev_get_priv(dev); + struct meson_pmx_group *group; + struct meson_gx_pmx_data *pmx_data; + void __iomem *addr; + int i, j, pos = 0; + unsigned int pin; + u32 reg; + + pin = selector + priv->data->pin_base; + + for (i = 0; i < priv->data->num_groups; i++) { + group = &priv->data->groups[i]; + pmx_data = (struct meson_gx_pmx_data *)group->data; + if (pmx_data->is_gpio) + continue; + + for (j = 0; j < group->num_pins; j++) { + if (group->pins[j] == pin) { + /* We have found a group using the pin */ + addr = priv->reg_mux + pmx_data->reg * 4; + reg = readl(addr) & BIT(pmx_data->bit); + if (reg) { + pos += snprintf(buf + pos, size - pos, + "%s ", group->name) - 1; + return 0; + } + } + } + } + + /* Fallback, must be used as GPIO */ + snprintf(buf, size, "%s or Unknown", + priv->data->groups[selector].name); + + return 0; +} + const struct pinconf_param meson_gx_pinconf_params[] = { { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 }, { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 }, @@ -89,6 +130,9 @@ const struct pinctrl_ops meson_gx_pinctrl_ops = { .pinconf_num_params = ARRAY_SIZE(meson_gx_pinconf_params), .pinconf_set = meson_pinconf_set, .pinconf_group_set = meson_pinconf_group_set, + .get_pin_name = meson_pinctrl_get_pin_name, + .get_pins_count = meson_pinctrl_get_pins_count, + .get_pin_muxing = meson_gx_pinmux_get, }; static const struct dm_gpio_ops meson_gx_gpio_ops = { |