diff options
| author | Pali Rohár <pali@kernel.org> | 2022-09-22 13:25:13 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2022-09-26 10:04:37 +0200 |
| commit | 54bcd84adf2dd2a42552143549541b2c809869a6 (patch) | |
| tree | 2ef163a8e4bbe71004caee4daa3ad8e2e52d873c | |
| parent | 435596d57f8beedf36b5dc858fe7ba9d6c03334b (diff) | |
gpio: turris_omnia_mcu: Fix registering gpios
Currently all GPIOs supported by CMD_EXT_CONTROL/CMD_GET_EXT_CONTROL_STATUS
commands (last 16 GPIOs) are available only when FEAT_PERIPH_MCU feature
bit is set. So do not register these GPIOs by U-Boot driver when this
feature bit is not set, so U-Boot 'gpio' command would see only GPIOs which
really exists.
Fixes: 5e4d24ccc115 ("gpio: Add Turris Omnia MCU driver")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
| -rw-r--r-- | drivers/gpio/turris_omnia_mcu.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/gpio/turris_omnia_mcu.c b/drivers/gpio/turris_omnia_mcu.c index 986ccde6bc..2d2bf2d1dd 100644 --- a/drivers/gpio/turris_omnia_mcu.c +++ b/drivers/gpio/turris_omnia_mcu.c @@ -16,6 +16,8 @@ enum commands_e { /* available if FEAT_EXT_CMDS bit is set in features */ CMD_GET_EXT_STATUS_DWORD = 0x11, + + /* available if FEAT_EXT_CMDS and FEAT_PERIPH_MCU bits are set in featurs */ CMD_EXT_CONTROL = 0x12, CMD_GET_EXT_CONTROL_STATUS = 0x13, }; @@ -54,6 +56,7 @@ enum ctl_byte_e { /* CMD_GET_FEATURES */ enum features_e { + FEAT_PERIPH_MCU = BIT(0), FEAT_EXT_CMDS = BIT(1), }; @@ -84,10 +87,12 @@ static int turris_omnia_mcu_get_function(struct udevice *dev, uint offset) return -EINVAL; return GPIOF_INPUT; - /* bank 2 - supported only when FEAT_EXT_CMDS is set */ + /* bank 2 - supported only when FEAT_EXT_CMDS and FEAT_PERIPH_MCU is set */ case (16 + 32 + 0) ... (16 + 32 + 15): if (!(info->features & FEAT_EXT_CMDS)) return -EINVAL; + if (!(info->features & FEAT_PERIPH_MCU)) + return -EINVAL; return GPIOF_OUTPUT; default: @@ -120,10 +125,12 @@ static int turris_omnia_mcu_get_value(struct udevice *dev, uint offset) return ((((u32)val32[3] << 24) | ((u32)val32[2] << 16) | ((u32)val32[1] << 8) | val32[0]) >> (offset - 16)) & 0x1; - /* bank 2 - supported only when FEAT_EXT_CMDS is set */ + /* bank 2 - supported only when FEAT_EXT_CMDS and FEAT_PERIPH_MCU is set */ case (16 + 32 + 0) ... (16 + 32 + 15): if (!(info->features & FEAT_EXT_CMDS)) return -EINVAL; + if (!(info->features & FEAT_PERIPH_MCU)) + return -EINVAL; ret = dm_i2c_read(dev, CMD_GET_EXT_CONTROL_STATUS, val16, 2); if (ret) return ret; @@ -162,10 +169,12 @@ static int turris_omnia_mcu_set_value(struct udevice *dev, uint offset, int valu val16[0] = value ? val16[1] : 0; return dm_i2c_write(dev, CMD_GENERAL_CONTROL, val16, sizeof(val16)); - /* bank 2 - supported only when FEAT_EXT_CMDS is set */ + /* bank 2 - supported only when FEAT_EXT_CMDS and FEAT_PERIPH_MCU is set */ case (16 + 32 + 0) ... (16 + 32 + 15): if (!(info->features & FEAT_EXT_CMDS)) return -EINVAL; + if (!(info->features & FEAT_PERIPH_MCU)) + return -EINVAL; val32[3] = BIT(offset - 16 - 32) >> 8; val32[2] = BIT(offset - 16 - 32) & 0xff; val32[1] = value ? val32[3] : 0; @@ -282,8 +291,10 @@ static int turris_omnia_mcu_probe(struct udevice *dev) uc_priv->bank_name = "mcu_"; - if (info->features & FEAT_EXT_CMDS) + if ((info->features & FEAT_EXT_CMDS) && (info->features & FEAT_PERIPH_MCU)) uc_priv->gpio_count = 16 + 32 + 16; + else if (info->features & FEAT_EXT_CMDS) + uc_priv->gpio_count = 16 + 32; else uc_priv->gpio_count = 16; |