[PATCH 11/22] phy: qcom-qmp-combo: clean up serdes initialisation

From: Johan Hovold
Date: Fri Nov 11 2022 - 03:59:01 EST


Clean up serdes initialisation somewhat by making the current helper a
dedicated helper for the DP part of the PHY.

Note that no error is currently returned for non-supported link rates.

Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
---
drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 49 +++++++++++------------
1 file changed, 24 insertions(+), 25 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
index 748fd32a6f72..c059e4aeecdb 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
@@ -1313,7 +1313,7 @@ static void qmp_combo_configure(void __iomem *base,
qmp_combo_configure_lane(base, tbl, num, 0xff);
}

-static int qmp_combo_serdes_init(struct qmp_phy *qphy)
+static int qmp_combo_dp_serdes_init(struct qmp_phy *qphy)
{
const struct qmp_phy_cfg *cfg = qphy->cfg;
void __iomem *serdes = qphy->serdes;
@@ -1323,28 +1323,26 @@ static int qmp_combo_serdes_init(struct qmp_phy *qphy)

qmp_combo_configure(serdes, serdes_tbl, serdes_tbl_num);

- if (cfg->type == PHY_TYPE_DP) {
- switch (dp_opts->link_rate) {
- case 1620:
- qmp_combo_configure(serdes, cfg->serdes_tbl_rbr,
- cfg->serdes_tbl_rbr_num);
- break;
- case 2700:
- qmp_combo_configure(serdes, cfg->serdes_tbl_hbr,
- cfg->serdes_tbl_hbr_num);
- break;
- case 5400:
- qmp_combo_configure(serdes, cfg->serdes_tbl_hbr2,
- cfg->serdes_tbl_hbr2_num);
- break;
- case 8100:
- qmp_combo_configure(serdes, cfg->serdes_tbl_hbr3,
- cfg->serdes_tbl_hbr3_num);
- break;
- default:
- /* Other link rates aren't supported */
- return -EINVAL;
- }
+ switch (dp_opts->link_rate) {
+ case 1620:
+ qmp_combo_configure(serdes, cfg->serdes_tbl_rbr,
+ cfg->serdes_tbl_rbr_num);
+ break;
+ case 2700:
+ qmp_combo_configure(serdes, cfg->serdes_tbl_hbr,
+ cfg->serdes_tbl_hbr_num);
+ break;
+ case 5400:
+ qmp_combo_configure(serdes, cfg->serdes_tbl_hbr2,
+ cfg->serdes_tbl_hbr2_num);
+ break;
+ case 8100:
+ qmp_combo_configure(serdes, cfg->serdes_tbl_hbr3,
+ cfg->serdes_tbl_hbr3_num);
+ break;
+ default:
+ /* Other link rates aren't supported */
+ return -EINVAL;
}

return 0;
@@ -1994,7 +1992,7 @@ static int qmp_combo_dp_power_on(struct phy *phy)
const struct qmp_phy_cfg *cfg = qphy->cfg;
void __iomem *tx = qphy->tx;

- qmp_combo_serdes_init(qphy);
+ qmp_combo_dp_serdes_init(qphy);

qmp_combo_configure_lane(tx, cfg->tx_tbl, cfg->tx_tbl_num, 1);

@@ -2025,6 +2023,7 @@ static int qmp_combo_usb_power_on(struct phy *phy)
struct qmp_phy *qphy = phy_get_drvdata(phy);
struct qcom_qmp *qmp = qphy->qmp;
const struct qmp_phy_cfg *cfg = qphy->cfg;
+ void __iomem *serdes = qphy->serdes;
void __iomem *tx = qphy->tx;
void __iomem *rx = qphy->rx;
void __iomem *pcs = qphy->pcs;
@@ -2032,7 +2031,7 @@ static int qmp_combo_usb_power_on(struct phy *phy)
unsigned int val;
int ret;

- qmp_combo_serdes_init(qphy);
+ qmp_combo_configure(serdes, cfg->serdes_tbl, cfg->serdes_tbl_num);

ret = clk_prepare_enable(qphy->pipe_clk);
if (ret) {
--
2.37.4