linux-kernel - [PATCH v2 08/13] phy: cadence-torrent: Add PHY link configuration sequences for single link

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Date:   Thu, 27 Aug 2020 18:16:46 +0200
From:   Swapnil Jakhade <sjakhade@...ence.com>
To:     <vkoul@...nel.org>, <kishon@...com>, <robh+dt@...nel.org>,
        <p.zabel@...gutronix.de>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
CC:     <mparab@...ence.com>, <sjakhade@...ence.com>,
        <yamonkar@...ence.com>, <tomi.valkeinen@...com>, <jsarha@...com>,
        <nsekhar@...com>
Subject: [PATCH v2 08/13] phy: cadence-torrent: Add PHY link configuration sequences for single link

Add support to configure link_cmn_vals and xcvr_diag_vals in case of single
link PHY configuration.

Signed-off-by: Swapnil Jakhade <sjakhade@...ence.com>
---
 drivers/phy/cadence/phy-cadence-torrent.c | 44 +++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index 9a87ee39a15a..eda3839762cb 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -1809,6 +1809,7 @@ static int cdns_torrent_phy_init(struct phy *phy)
 	struct cdns_torrent_phy *cdns_phy = dev_get_drvdata(phy->dev.parent);
 	const struct cdns_torrent_data *init_data = cdns_phy->init_data;
 	struct cdns_torrent_vals *cmn_vals, *tx_ln_vals, *rx_ln_vals;
+	struct cdns_torrent_vals *link_cmn_vals, *xcvr_diag_vals;
 	struct cdns_torrent_inst *inst = phy_get_drvdata(phy);
 	enum cdns_torrent_phy_type phy_type = inst->phy_type;
 	enum cdns_torrent_ssc_mode ssc = inst->ssc_mode;
@@ -1823,6 +1824,29 @@ static int cdns_torrent_phy_init(struct phy *phy)
 	if (phy_type == TYPE_DP)
 		return cdns_torrent_dp_init(phy);
 
+	/* PHY configuration specific registers for single link */
+	link_cmn_vals = init_data->link_cmn_vals[phy_type][TYPE_NONE][ssc];
+	if (link_cmn_vals) {
+		reg_pairs = link_cmn_vals->reg_pairs;
+		num_regs = link_cmn_vals->num_regs;
+		regmap = cdns_phy->regmap_common_cdb;
+		for (i = 0; i < num_regs; i++)
+			regmap_write(regmap, reg_pairs[i].off,
+				     reg_pairs[i].val);
+	}
+
+	xcvr_diag_vals = init_data->xcvr_diag_vals[phy_type][TYPE_NONE][ssc];
+	if (xcvr_diag_vals) {
+		reg_pairs = xcvr_diag_vals->reg_pairs;
+		num_regs = xcvr_diag_vals->num_regs;
+		for (i = 0; i < inst->num_lanes; i++) {
+			regmap = cdns_phy->regmap_tx_lane_cdb[i + inst->mlane];
+			for (j = 0; j < num_regs; j++)
+				regmap_write(regmap, reg_pairs[j].off,
+					     reg_pairs[j].val);
+		}
+	}
+
 	/* PMA common registers configurations */
 	cmn_vals = init_data->cmn_vals[phy_type][TYPE_NONE][ssc];
 	if (cmn_vals) {
@@ -2646,6 +2670,11 @@ static const struct cdns_torrent_data cdns_map_torrent = {
 	.reg_offset_shift = 0x2,
 	.link_cmn_vals = {
 		[TYPE_PCIE] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = NULL,
+				[EXTERNAL_SSC] = NULL,
+				[INTERNAL_SSC] = NULL,
+			},
 			[TYPE_SGMII] = {
 				[NO_SSC] = &pcie_sgmii_link_cmn_vals,
 				[EXTERNAL_SSC] = &pcie_sgmii_link_cmn_vals,
@@ -2674,6 +2703,11 @@ static const struct cdns_torrent_data cdns_map_torrent = {
 	},
 	.xcvr_diag_vals = {
 		[TYPE_PCIE] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = NULL,
+				[EXTERNAL_SSC] = NULL,
+				[INTERNAL_SSC] = NULL,
+			},
 			[TYPE_SGMII] = {
 				[NO_SSC] = &pcie_sgmii_xcvr_diag_ln_vals,
 				[EXTERNAL_SSC] = &pcie_sgmii_xcvr_diag_ln_vals,
@@ -2806,6 +2840,11 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
 	.reg_offset_shift = 0x1,
 	.link_cmn_vals = {
 		[TYPE_PCIE] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = NULL,
+				[EXTERNAL_SSC] = NULL,
+				[INTERNAL_SSC] = NULL,
+			},
 			[TYPE_SGMII] = {
 				[NO_SSC] = &pcie_sgmii_link_cmn_vals,
 				[EXTERNAL_SSC] = &pcie_sgmii_link_cmn_vals,
@@ -2834,6 +2873,11 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
 	},
 	.xcvr_diag_vals = {
 		[TYPE_PCIE] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = NULL,
+				[EXTERNAL_SSC] = NULL,
+				[INTERNAL_SSC] = NULL,
+			},
 			[TYPE_SGMII] = {
 				[NO_SSC] = &pcie_sgmii_xcvr_diag_ln_vals,
 				[EXTERNAL_SSC] = &pcie_sgmii_xcvr_diag_ln_vals,
-- 
2.26.1