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Subject[PATCH v3 4/7] phy: cadence-torrent: Add separate regmap functions for torrent and DP
Date
Added separate functions for regmap initialization of torrent PHY
generic registers and DP specific registers.

Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>
---
drivers/phy/cadence/phy-cadence-torrent.c | 99 +++++++++++++++--------
1 file changed, 66 insertions(+), 33 deletions(-)

diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index 966aeec8ec06..9dba7ba33fcd 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -1584,7 +1584,24 @@ static struct regmap *cdns_regmap_init(struct device *dev, void __iomem *base,
return devm_regmap_init(dev, NULL, ctx, config);
}

-static int cdns_regfield_init(struct cdns_torrent_phy *cdns_phy)
+static int cdns_torrent_dp_regfield_init(struct cdns_torrent_phy *cdns_phy)
+{
+ struct device *dev = cdns_phy->dev;
+ struct regmap_field *field;
+ struct regmap *regmap;
+
+ regmap = cdns_phy->regmap_dptx_phy_reg;
+ field = devm_regmap_field_alloc(dev, regmap, phy_reset_ctrl);
+ if (IS_ERR(field)) {
+ dev_err(dev, "PHY_RESET reg field init failed\n");
+ return PTR_ERR(field);
+ }
+ cdns_phy->phy_reset_ctrl = field;
+
+ return 0;
+}
+
+static int cdns_torrent_regfield_init(struct cdns_torrent_phy *cdns_phy)
{
struct device *dev = cdns_phy->dev;
struct regmap_field *field;
@@ -1614,28 +1631,44 @@ static int cdns_regfield_init(struct cdns_torrent_phy *cdns_phy)
}
cdns_phy->phy_pma_pll_raw_ctrl = field;

- regmap = cdns_phy->regmap_dptx_phy_reg;
- field = devm_regmap_field_alloc(dev, regmap, phy_reset_ctrl);
- if (IS_ERR(field)) {
- dev_err(dev, "PHY_RESET reg field init failed\n");
- return PTR_ERR(field);
+ return 0;
+}
+
+static int cdns_torrent_dp_regmap_init(struct cdns_torrent_phy *cdns_phy)
+{
+ void __iomem *base = cdns_phy->base;
+ struct device *dev = cdns_phy->dev;
+ struct regmap *regmap;
+ u8 reg_offset_shift;
+ u32 block_offset;
+
+ reg_offset_shift = cdns_phy->init_data->reg_offset_shift;
+
+ block_offset = TORRENT_DPTX_PHY_OFFSET;
+ regmap = cdns_regmap_init(dev, base, block_offset,
+ reg_offset_shift,
+ &cdns_torrent_dptx_phy_config);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "Failed to init DPTX PHY regmap\n");
+ return PTR_ERR(regmap);
}
- cdns_phy->phy_reset_ctrl = field;
+ cdns_phy->regmap_dptx_phy_reg = regmap;

return 0;
}

-static int cdns_regmap_init_torrent_dp(struct cdns_torrent_phy *cdns_phy,
- void __iomem *sd_base,
- void __iomem *base,
- u8 block_offset_shift,
- u8 reg_offset_shift)
+static int cdns_torrent_regmap_init(struct cdns_torrent_phy *cdns_phy)
{
+ void __iomem *sd_base = cdns_phy->sd_base;
+ u8 block_offset_shift, reg_offset_shift;
struct device *dev = cdns_phy->dev;
struct regmap *regmap;
u32 block_offset;
int i;

+ block_offset_shift = cdns_phy->init_data->block_offset_shift;
+ reg_offset_shift = cdns_phy->init_data->reg_offset_shift;
+
for (i = 0; i < MAX_NUM_LANES; i++) {
block_offset = TORRENT_TX_LANE_CDB_OFFSET(i, block_offset_shift,
reg_offset_shift);
@@ -1690,16 +1723,6 @@ static int cdns_regmap_init_torrent_dp(struct cdns_torrent_phy *cdns_phy,
}
cdns_phy->regmap_phy_pma_common_cdb = regmap;

- block_offset = TORRENT_DPTX_PHY_OFFSET;
- regmap = cdns_regmap_init(dev, base, block_offset,
- reg_offset_shift,
- &cdns_torrent_dptx_phy_config);
- if (IS_ERR(regmap)) {
- dev_err(dev, "Failed to init DPTX PHY regmap\n");
- return PTR_ERR(regmap);
- }
- cdns_phy->regmap_dptx_phy_reg = regmap;
-
return 0;
}

@@ -1711,6 +1734,7 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev)
const struct cdns_torrent_data *data;
struct device_node *child;
int ret, subnodes, node = 0, i;
+ u8 init_dp_regmap = 0;

/* Get init data for this PHY */
data = of_device_get_match_data(dev);
@@ -1748,6 +1772,14 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev)
return -EINVAL;
}

+ ret = cdns_torrent_regmap_init(cdns_phy);
+ if (ret)
+ return ret;
+
+ ret = cdns_torrent_regfield_init(cdns_phy);
+ if (ret)
+ return ret;
+
for_each_available_child_of_node(dev->of_node, child) {
struct phy *gphy;

@@ -1830,6 +1862,18 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev)
goto put_child;
}

+ if (!init_dp_regmap) {
+ ret = cdns_torrent_dp_regmap_init(cdns_phy);
+ if (ret)
+ goto put_child;
+
+ ret = cdns_torrent_dp_regfield_init(cdns_phy);
+ if (ret)
+ goto put_child;
+
+ init_dp_regmap++;
+ }
+
dev_info(dev, "%d lanes, max bit rate %d.%03d Gbps\n",
cdns_phy->phys[node].num_lanes,
cdns_phy->max_bit_rate / 1000,
@@ -1846,17 +1890,6 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev)
}
cdns_phy->nsubnodes = node;

- ret = cdns_regmap_init_torrent_dp(cdns_phy, cdns_phy->sd_base,
- cdns_phy->base,
- data->block_offset_shift,
- data->reg_offset_shift);
- if (ret)
- goto put_lnk_rst;
-
- ret = cdns_regfield_init(cdns_phy);
- if (ret)
- goto put_lnk_rst;
-
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
if (IS_ERR(phy_provider)) {
ret = PTR_ERR(phy_provider);
--
2.26.1
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