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Date: Fri, 11 Nov 2022 09:56:31 +0100
From: Johan Hovold <johan+linaro@...nel.org>
To: Vinod Koul <vkoul@...nel.org>
Cc: Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
linux-kernel@...r.kernel.org,
Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 10/22] phy: qcom-qmp-combo: separate USB and DP power-on ops
Separate the USB and DP power-on and power-off operations in two
dedicated implementations.
Note that the pipe clock is only used by the USB part of the PHY and
that no DP configuration has a pcs (or rx) table or has has_pwrdn_delay
set.
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 100 +++++++++++++---------
1 file changed, 59 insertions(+), 41 deletions(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
index 7392ae460fd7..748fd32a6f72 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
@@ -1988,7 +1988,39 @@ static int qmp_combo_dp_exit(struct phy *phy)
return 0;
}
-static int qmp_combo_power_on(struct phy *phy)
+static int qmp_combo_dp_power_on(struct phy *phy)
+{
+ struct qmp_phy *qphy = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qphy->cfg;
+ void __iomem *tx = qphy->tx;
+
+ qmp_combo_serdes_init(qphy);
+
+ qmp_combo_configure_lane(tx, cfg->tx_tbl, cfg->tx_tbl_num, 1);
+
+ if (cfg->lanes >= 2)
+ qmp_combo_configure_lane(qphy->tx2, cfg->tx_tbl, cfg->tx_tbl_num, 2);
+
+ /* Configure special DP tx tunings */
+ cfg->configure_dp_tx(qphy);
+
+ /* Configure link rate, swing, etc. */
+ cfg->configure_dp_phy(qphy);
+
+ return 0;
+}
+
+static int qmp_combo_dp_power_off(struct phy *phy)
+{
+ struct qmp_phy *qphy = phy_get_drvdata(phy);
+
+ /* Assert DP PHY power down */
+ writel(DP_PHY_PD_CTL_PSR_PWRDN, qphy->pcs + QSERDES_DP_PHY_PD_CTL);
+
+ return 0;
+}
+
+static int qmp_combo_usb_power_on(struct phy *phy)
{
struct qmp_phy *qphy = phy_get_drvdata(phy);
struct qcom_qmp *qmp = qphy->qmp;
@@ -2014,39 +2046,30 @@ static int qmp_combo_power_on(struct phy *phy)
if (cfg->lanes >= 2)
qmp_combo_configure_lane(qphy->tx2, cfg->tx_tbl, cfg->tx_tbl_num, 2);
- /* Configure special DP tx tunings */
- if (cfg->type == PHY_TYPE_DP)
- cfg->configure_dp_tx(qphy);
-
qmp_combo_configure_lane(rx, cfg->rx_tbl, cfg->rx_tbl_num, 1);
if (cfg->lanes >= 2)
qmp_combo_configure_lane(qphy->rx2, cfg->rx_tbl, cfg->rx_tbl_num, 2);
- /* Configure link rate, swing, etc. */
- if (cfg->type == PHY_TYPE_DP)
- cfg->configure_dp_phy(qphy);
- else
- qmp_combo_configure(pcs, cfg->pcs_tbl, cfg->pcs_tbl_num);
+ qmp_combo_configure(pcs, cfg->pcs_tbl, cfg->pcs_tbl_num);
if (cfg->has_pwrdn_delay)
usleep_range(10, 20);
- if (cfg->type != PHY_TYPE_DP) {
- /* Pull PHY out of reset state */
- qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
- /* start SerDes and Phy-Coding-Sublayer */
- qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL],
- SERDES_START | PCS_START);
+ /* Pull PHY out of reset state */
+ qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
- status = pcs + cfg->regs[QPHY_PCS_STATUS];
- ret = readl_poll_timeout(status, val, !(val & PHYSTATUS), 200,
- PHY_INIT_COMPLETE_TIMEOUT);
- if (ret) {
- dev_err(qmp->dev, "phy initialization timed-out\n");
- goto err_disable_pipe_clk;
- }
+ /* start SerDes and Phy-Coding-Sublayer */
+ qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], SERDES_START | PCS_START);
+
+ status = pcs + cfg->regs[QPHY_PCS_STATUS];
+ ret = readl_poll_timeout(status, val, !(val & PHYSTATUS), 200,
+ PHY_INIT_COMPLETE_TIMEOUT);
+ if (ret) {
+ dev_err(qmp->dev, "phy initialization timed-out\n");
+ goto err_disable_pipe_clk;
}
+
return 0;
err_disable_pipe_clk:
@@ -2055,28 +2078,23 @@ static int qmp_combo_power_on(struct phy *phy)
return ret;
}
-static int qmp_combo_power_off(struct phy *phy)
+static int qmp_combo_usb_power_off(struct phy *phy)
{
struct qmp_phy *qphy = phy_get_drvdata(phy);
const struct qmp_phy_cfg *cfg = qphy->cfg;
clk_disable_unprepare(qphy->pipe_clk);
- if (cfg->type == PHY_TYPE_DP) {
- /* Assert DP PHY power down */
- writel(DP_PHY_PD_CTL_PSR_PWRDN, qphy->pcs + QSERDES_DP_PHY_PD_CTL);
- } else {
- /* PHY reset */
- qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
+ /* PHY reset */
+ qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
- /* stop SerDes and Phy-Coding-Sublayer */
- qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL],
- SERDES_START | PCS_START);
+ /* stop SerDes and Phy-Coding-Sublayer */
+ qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL],
+ SERDES_START | PCS_START);
- /* Put PHY into POWER DOWN state: active low */
- qphy_clrbits(qphy->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
- SW_PWRDN);
- }
+ /* Put PHY into POWER DOWN state: active low */
+ qphy_clrbits(qphy->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
+ SW_PWRDN);
return 0;
}
@@ -2090,7 +2108,7 @@ static int qmp_combo_usb_init(struct phy *phy)
if (ret)
return ret;
- ret = qmp_combo_power_on(phy);
+ ret = qmp_combo_usb_power_on(phy);
if (ret)
qmp_combo_com_exit(qphy);
@@ -2102,7 +2120,7 @@ static int qmp_combo_usb_exit(struct phy *phy)
struct qmp_phy *qphy = phy_get_drvdata(phy);
int ret;
- ret = qmp_combo_power_off(phy);
+ ret = qmp_combo_usb_power_off(phy);
if (ret)
return ret;
@@ -2128,9 +2146,9 @@ static const struct phy_ops qmp_combo_usb_phy_ops = {
static const struct phy_ops qmp_combo_dp_phy_ops = {
.init = qmp_combo_dp_init,
.configure = qmp_combo_dp_configure,
- .power_on = qmp_combo_power_on,
+ .power_on = qmp_combo_dp_power_on,
.calibrate = qmp_combo_dp_calibrate,
- .power_off = qmp_combo_power_off,
+ .power_off = qmp_combo_dp_power_off,
.exit = qmp_combo_dp_exit,
.owner = THIS_MODULE,
};
--
2.37.4
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