ice: Change CGU regs struct to anonymous

Simplify the code by using anonymous struct in CGU registers instead of
naming each structure 'field'.
Suggested-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240528-next-2024-05-28-ptp-refactors-v1-8-c082739bb6f6@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -23,7 +23,7 @@ union nac_cgu_dword9 {
 		u32 clk_synce0_amp : 2;
 		u32 one_pps_out_amp : 2;
 		u32 misc24 : 12;
-	} field;
+	};
 	u32 val;
 };
 
@@ -39,7 +39,7 @@ union nac_cgu_dword19 {
 		u32 japll_ndivratio : 4;
 		u32 japll_iref_ndivratio : 3;
 		u32 misc27 : 1;
-	} field;
+	};
 	u32 val;
 };
 
@@ -63,7 +63,7 @@ union nac_cgu_dword22 {
 		u32 fdpllclk_sel_div2 : 1;
 		u32 time1588clk_sel_div2 : 1;
 		u32 misc3 : 1;
-	} field;
+	};
 	u32 val;
 };
 
@@ -77,7 +77,7 @@ union nac_cgu_dword24 {
 		u32 ext_synce_sel : 1;
 		u32 ref1588_ck_div : 4;
 		u32 time_ref_sel : 1;
-	} field;
+	};
 	u32 val;
 };
 
@@ -92,7 +92,7 @@ union tspll_cntr_bist_settings {
 		u32 i_plllock_cnt_6_0 : 7;
 		u32 i_plllock_cnt_10_7 : 4;
 		u32 reserved200 : 4;
-	} field;
+	};
 	u32 val;
 };
 
@@ -109,7 +109,7 @@ union tspll_ro_bwm_lf {
 		u32 afcdone_cri : 1;
 		u32 feedfwrdgain_cal_cri_7_0 : 8;
 		u32 m2fbdivmod_cri_7_0 : 8;
-	} field;
+	};
 	u32 val;
 };
 

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

@@ -393,14 +393,14 @@ static int ice_cfg_cgu_pll_e82x(struct ice_hw *hw,
 
 	/* Log the current clock configuration */
 	ice_debug(hw, ICE_DBG_PTP, "Current CGU configuration -- %s, clk_src %s, clk_freq %s, PLL %s\n",
-		  dw24.field.ts_pll_enable ? "enabled" : "disabled",
-		  ice_clk_src_str(dw24.field.time_ref_sel),
-		  ice_clk_freq_str(dw9.field.time_ref_freq_sel),
-		  bwm_lf.field.plllock_true_lock_cri ? "locked" : "unlocked");
+		  dw24.ts_pll_enable ? "enabled" : "disabled",
+		  ice_clk_src_str(dw24.time_ref_sel),
+		  ice_clk_freq_str(dw9.time_ref_freq_sel),
+		  bwm_lf.plllock_true_lock_cri ? "locked" : "unlocked");
 
 	/* Disable the PLL before changing the clock source or frequency */
-	if (dw24.field.ts_pll_enable) {
-		dw24.field.ts_pll_enable = 0;
+	if (dw24.ts_pll_enable) {
+		dw24.ts_pll_enable = 0;
 
 		err = ice_write_cgu_reg_e82x(hw, NAC_CGU_DWORD24, dw24.val);
 		if (err)
@@ -408,7 +408,7 @@ static int ice_cfg_cgu_pll_e82x(struct ice_hw *hw,
 	}
 
 	/* Set the frequency */
-	dw9.field.time_ref_freq_sel = clk_freq;
+	dw9.time_ref_freq_sel = clk_freq;
 	err = ice_write_cgu_reg_e82x(hw, NAC_CGU_DWORD9, dw9.val);
 	if (err)
 		return err;
@@ -418,8 +418,8 @@ static int ice_cfg_cgu_pll_e82x(struct ice_hw *hw,
 	if (err)
 		return err;
 
-	dw19.field.tspll_fbdiv_intgr = e822_cgu_params[clk_freq].feedback_div;
-	dw19.field.tspll_ndivratio = 1;
+	dw19.tspll_fbdiv_intgr = e822_cgu_params[clk_freq].feedback_div;
+	dw19.tspll_ndivratio = 1;
 
 	err = ice_write_cgu_reg_e82x(hw, NAC_CGU_DWORD19, dw19.val);
 	if (err)
@@ -430,8 +430,8 @@ static int ice_cfg_cgu_pll_e82x(struct ice_hw *hw,
 	if (err)
 		return err;
 
-	dw22.field.time1588clk_div = e822_cgu_params[clk_freq].post_pll_div;
-	dw22.field.time1588clk_sel_div2 = 0;
+	dw22.time1588clk_div = e822_cgu_params[clk_freq].post_pll_div;
+	dw22.time1588clk_sel_div2 = 0;
 
 	err = ice_write_cgu_reg_e82x(hw, NAC_CGU_DWORD22, dw22.val);
 	if (err)
@@ -442,16 +442,16 @@ static int ice_cfg_cgu_pll_e82x(struct ice_hw *hw,
 	if (err)
 		return err;
 
-	dw24.field.ref1588_ck_div = e822_cgu_params[clk_freq].refclk_pre_div;
-	dw24.field.tspll_fbdiv_frac = e822_cgu_params[clk_freq].frac_n_div;
-	dw24.field.time_ref_sel = clk_src;
+	dw24.ref1588_ck_div = e822_cgu_params[clk_freq].refclk_pre_div;
+	dw24.tspll_fbdiv_frac = e822_cgu_params[clk_freq].frac_n_div;
+	dw24.time_ref_sel = clk_src;
 
 	err = ice_write_cgu_reg_e82x(hw, NAC_CGU_DWORD24, dw24.val);
 	if (err)
 		return err;
 
 	/* Finally, enable the PLL */
-	dw24.field.ts_pll_enable = 1;
+	dw24.ts_pll_enable = 1;
 
 	err = ice_write_cgu_reg_e82x(hw, NAC_CGU_DWORD24, dw24.val);
 	if (err)
@@ -464,17 +464,17 @@ static int ice_cfg_cgu_pll_e82x(struct ice_hw *hw,
 	if (err)
 		return err;
 
-	if (!bwm_lf.field.plllock_true_lock_cri) {
+	if (!bwm_lf.plllock_true_lock_cri) {
 		dev_warn(ice_hw_to_dev(hw), "CGU PLL failed to lock\n");
 		return -EBUSY;
 	}
 
 	/* Log the current clock configuration */
 	ice_debug(hw, ICE_DBG_PTP, "New CGU configuration -- %s, clk_src %s, clk_freq %s, PLL %s\n",
-		  dw24.field.ts_pll_enable ? "enabled" : "disabled",
-		  ice_clk_src_str(dw24.field.time_ref_sel),
-		  ice_clk_freq_str(dw9.field.time_ref_freq_sel),
-		  bwm_lf.field.plllock_true_lock_cri ? "locked" : "unlocked");
+		  dw24.ts_pll_enable ? "enabled" : "disabled",
+		  ice_clk_src_str(dw24.time_ref_sel),
+		  ice_clk_freq_str(dw9.time_ref_freq_sel),
+		  bwm_lf.plllock_true_lock_cri ? "locked" : "unlocked");
 
 	return 0;
 }
@@ -499,8 +499,8 @@ static int ice_init_cgu_e82x(struct ice_hw *hw)
 		return err;
 
 	/* Disable sticky lock detection so lock err reported is accurate */
-	cntr_bist.field.i_plllock_sel_0 = 0;
-	cntr_bist.field.i_plllock_sel_1 = 0;
+	cntr_bist.i_plllock_sel_0 = 0;
+	cntr_bist.i_plllock_sel_1 = 0;
 
 	err = ice_write_cgu_reg_e82x(hw, TSPLL_CNTR_BIST_SETTINGS,
 				     cntr_bist.val);