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| author | Maciej Machnikowski <maciej.machnikowski@intel.com> | 2021-08-17 13:09:16 +0200 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-10-14 07:37:30 -0700 |
| commit | 3bb6324b3dcbf30a99fea0bad9fe8941de4b75fb (patch) | |
| tree | 70de5c82cf20940ca015c850bfd4d2c555404f23 /drivers/net/ethernet/intel/ice/ice_common.c | |
| parent | e00ae1a2aaf2348025cc75007ebd932a1e64c544 (diff) | |
| download | lwn-3bb6324b3dcbf30a99fea0bad9fe8941de4b75fb.tar.gz lwn-3bb6324b3dcbf30a99fea0bad9fe8941de4b75fb.zip | |
ice: Implement functions for reading and setting GPIO pins
Implement ice_aq_get_gpio and ice_aq_set_gpio for reading and changing
the state of GPIO pins described in the topology.
Signed-off-by: Maciej Machnikowski <maciej.machnikowski@intel.com>
Tested-by: Sunitha Mekala <sunithax.d.mekala@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_common.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_common.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c index b0084359a7e1..7416f802a558 100644 --- a/drivers/net/ethernet/intel/ice/ice_common.c +++ b/drivers/net/ethernet/intel/ice/ice_common.c @@ -4795,6 +4795,64 @@ ice_aq_get_driver_param(struct ice_hw *hw, enum ice_aqc_driver_params idx, } /** + * ice_aq_set_gpio + * @hw: pointer to the hw struct + * @gpio_ctrl_handle: GPIO controller node handle + * @pin_idx: IO Number of the GPIO that needs to be set + * @value: SW provide IO value to set in the LSB + * @cd: pointer to command details structure or NULL + * + * Sends 0x06EC AQ command to set the GPIO pin state that's part of the topology + */ +int +ice_aq_set_gpio(struct ice_hw *hw, u16 gpio_ctrl_handle, u8 pin_idx, bool value, + struct ice_sq_cd *cd) +{ + struct ice_aqc_gpio *cmd; + struct ice_aq_desc desc; + + ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_set_gpio); + cmd = &desc.params.read_write_gpio; + cmd->gpio_ctrl_handle = cpu_to_le16(gpio_ctrl_handle); + cmd->gpio_num = pin_idx; + cmd->gpio_val = value ? 1 : 0; + + return ice_status_to_errno(ice_aq_send_cmd(hw, &desc, NULL, 0, cd)); +} + +/** + * ice_aq_get_gpio + * @hw: pointer to the hw struct + * @gpio_ctrl_handle: GPIO controller node handle + * @pin_idx: IO Number of the GPIO that needs to be set + * @value: IO value read + * @cd: pointer to command details structure or NULL + * + * Sends 0x06ED AQ command to get the value of a GPIO signal which is part of + * the topology + */ +int +ice_aq_get_gpio(struct ice_hw *hw, u16 gpio_ctrl_handle, u8 pin_idx, + bool *value, struct ice_sq_cd *cd) +{ + struct ice_aqc_gpio *cmd; + struct ice_aq_desc desc; + enum ice_status status; + + ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_gpio); + cmd = &desc.params.read_write_gpio; + cmd->gpio_ctrl_handle = cpu_to_le16(gpio_ctrl_handle); + cmd->gpio_num = pin_idx; + + status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd); + if (status) + return ice_status_to_errno(status); + + *value = !!cmd->gpio_val; + return 0; +} + +/** * ice_fw_supports_link_override * @hw: pointer to the hardware structure * |