ice: Add GPIO pin support for E823 products

Add GPIO pin setup for E823, which is only 1PPS input and output.
Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ice/ice_common.c

@@ -207,6 +207,31 @@ bool ice_is_e810t(struct ice_hw *hw)
 	return false;
 }
 
+/**
+ * ice_is_e823
+ * @hw: pointer to the hardware structure
+ *
+ * returns true if the device is E823-L or E823-C based, false if not.
+ */
+bool ice_is_e823(struct ice_hw *hw)
+{
+	switch (hw->device_id) {
+	case ICE_DEV_ID_E823L_BACKPLANE:
+	case ICE_DEV_ID_E823L_SFP:
+	case ICE_DEV_ID_E823L_10G_BASE_T:
+	case ICE_DEV_ID_E823L_1GBE:
+	case ICE_DEV_ID_E823L_QSFP:
+	case ICE_DEV_ID_E823C_BACKPLANE:
+	case ICE_DEV_ID_E823C_QSFP:
+	case ICE_DEV_ID_E823C_SFP:
+	case ICE_DEV_ID_E823C_10G_BASE_T:
+	case ICE_DEV_ID_E823C_SGMII:
+		return true;
+	default:
+		return false;
+	}
+}
+
 /**
  * ice_clear_pf_cfg - Clear PF configuration
  * @hw: pointer to the hardware structure

drivers/net/ethernet/intel/ice/ice_common.h

@@ -199,6 +199,7 @@ void
 ice_stat_update32(struct ice_hw *hw, u32 reg, bool prev_stat_loaded,
 		  u64 *prev_stat, u64 *cur_stat);
 bool ice_is_e810t(struct ice_hw *hw);
+bool ice_is_e823(struct ice_hw *hw);
 int
 ice_sched_query_elem(struct ice_hw *hw, u32 node_teid,
 		     struct ice_aqc_txsched_elem_data *buf);

drivers/net/ethernet/intel/ice/ice_ptp.c

@@ -1769,6 +1769,38 @@ ice_ptp_gpio_enable_e810(struct ptp_clock_info *info,
 	return err;
 }
 
+/**
+ * ice_ptp_gpio_enable_e823 - Enable/disable ancillary features of PHC
+ * @info: the driver's PTP info structure
+ * @rq: The requested feature to change
+ * @on: Enable/disable flag
+ */
+static int ice_ptp_gpio_enable_e823(struct ptp_clock_info *info,
+				    struct ptp_clock_request *rq, int on)
+{
+	struct ice_pf *pf = ptp_info_to_pf(info);
+	struct ice_perout_channel clk_cfg = {0};
+	int err;
+
+	switch (rq->type) {
+	case PTP_CLK_REQ_PPS:
+		clk_cfg.gpio_pin = PPS_PIN_INDEX;
+		clk_cfg.period = NSEC_PER_SEC;
+		clk_cfg.ena = !!on;
+
+		err = ice_ptp_cfg_clkout(pf, PPS_CLK_GEN_CHAN, &clk_cfg, true);
+		break;
+	case PTP_CLK_REQ_EXTTS:
+		err = ice_ptp_cfg_extts(pf, !!on, rq->extts.index,
+					TIME_SYNC_PIN_INDEX, rq->extts.flags);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return err;
+}
+
 /**
  * ice_ptp_gettimex64 - Get the time of the clock
  * @info: the driver's PTP info structure
@@ -2220,6 +2252,19 @@ ice_ptp_setup_pins_e810(struct ice_pf *pf, struct ptp_clock_info *info)
 	}
 }
 
+/**
+ * ice_ptp_setup_pins_e823 - Setup PTP pins in sysfs
+ * @pf: pointer to the PF instance
+ * @info: PTP clock capabilities
+ */
+static void
+ice_ptp_setup_pins_e823(struct ice_pf *pf, struct ptp_clock_info *info)
+{
+	info->pps = 1;
+	info->n_per_out = 0;
+	info->n_ext_ts = 1;
+}
+
 /**
  * ice_ptp_set_funcs_e822 - Set specialized functions for E822 support
  * @pf: Board private structure
@@ -2257,6 +2302,23 @@ ice_ptp_set_funcs_e810(struct ice_pf *pf, struct ptp_clock_info *info)
 	ice_ptp_setup_pins_e810(pf, info);
 }
 
+/**
+ * ice_ptp_set_funcs_e823 - Set specialized functions for E823 support
+ * @pf: Board private structure
+ * @info: PTP info to fill
+ *
+ * Assign functions to the PTP capabiltiies structure for E823 devices.
+ * Functions which operate across all device families should be set directly
+ * in ice_ptp_set_caps. Only add functions here which are distinct for e823
+ * devices.
+ */
+static void
+ice_ptp_set_funcs_e823(struct ice_pf *pf, struct ptp_clock_info *info)
+{
+	info->enable = ice_ptp_gpio_enable_e823;
+	ice_ptp_setup_pins_e823(pf, info);
+}
+
 /**
  * ice_ptp_set_caps - Set PTP capabilities
  * @pf: Board private structure
@@ -2277,6 +2339,8 @@ static void ice_ptp_set_caps(struct ice_pf *pf)
 
 	if (ice_is_e810(&pf->hw))
 		ice_ptp_set_funcs_e810(pf, info);
+	else if (ice_is_e823(&pf->hw))
+		ice_ptp_set_funcs_e823(pf, info);
 	else
 		ice_ptp_set_funcs_e822(pf, info);
 }