diff options
Diffstat (limited to 'drivers/pinctrl/meson/pinctrl-meson-axg-pmx.c')
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson-axg-pmx.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/pinctrl/meson/pinctrl-meson-axg-pmx.c b/drivers/pinctrl/meson/pinctrl-meson-axg-pmx.c index f23b188f2f..b5d74068c5 100644 --- a/drivers/pinctrl/meson/pinctrl-meson-axg-pmx.c +++ b/drivers/pinctrl/meson/pinctrl-meson-axg-pmx.c @@ -93,10 +93,56 @@ static int meson_axg_pinmux_group_set(struct udevice *dev, return 0; } +static int meson_axg_pinmux_get(struct udevice *dev, unsigned int selector, + char *buf, int size) +{ + struct meson_pinctrl *priv = dev_get_priv(dev); + struct meson_pmx_axg_data *pmx_data; + struct meson_pmx_group *group; + struct meson_pmx_bank *bank; + unsigned int offset; + unsigned int func; + unsigned int reg; + int ret, i, j; + + selector += priv->data->pin_base; + + ret = meson_axg_pmx_get_bank(dev, selector, &bank); + if (ret) { + snprintf(buf, size, "Unhandled"); + return 0; + } + + meson_axg_pmx_calc_reg_and_offset(bank, selector, ®, &offset); + + func = (readl(priv->reg_mux + (reg << 2)) >> offset) & 0xf; + + for (i = 0; i < priv->data->num_groups; i++) { + group = &priv->data->groups[i]; + pmx_data = (struct meson_pmx_axg_data *)group->data; + + if (pmx_data->func != func) + continue; + + for (j = 0; j < group->num_pins; j++) { + if (group->pins[j] == selector) { + snprintf(buf, size, "%s (%x)", + group->name, func); + return 0; + } + } + } + + snprintf(buf, size, "Unknown (%x)", func); + + return 0; +} + const struct pinconf_param meson_axg_pinconf_params[] = { { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 }, { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 }, { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 }, + { "drive-strength-microamp", PIN_CONFIG_DRIVE_STRENGTH_UA, 0 }, }; const struct pinctrl_ops meson_axg_pinctrl_ops = { @@ -110,6 +156,9 @@ const struct pinctrl_ops meson_axg_pinctrl_ops = { .pinconf_num_params = ARRAY_SIZE(meson_axg_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_axg_pinmux_get, }; static int meson_axg_gpio_request(struct udevice *dev, |