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phy: qcom-qmp-pcie-msm8996: use bulk reset_control API

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Switch qcom-qmp-pcie-msm8996 driver to use reset_control_bulk_assert /
_deassert functions rather than hardcoding the loops in the driver
itself.

Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> # UFS, PCIe and USB on SC8180X
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220607213203.2819885-30-dmitry.baryshkov@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Dmitry Baryshkov 2022-06-08 00:32:02 +03:00 committed by Vinod Koul
parent 189ac6b8dd
commit ccac084746
1 changed files with 18 additions and 31 deletions
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49
drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c
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@ -340,7 +340,7 @@ struct qcom_qmp {
struct device *dev;
struct clk_bulk_data *clks;
struct reset_control **resets;
struct reset_control_bulk_data *resets;
struct regulator_bulk_data *vregs;
struct qmp_phy **phys;
@ -489,7 +489,7 @@ static int qcom_qmp_phy_pcie_msm8996_com_init(struct qmp_phy *qphy)
struct qcom_qmp *qmp = qphy->qmp;
const struct qmp_phy_cfg *cfg = qphy->cfg;
void __iomem *serdes = qphy->serdes;
int ret, i;
int ret;
mutex_lock(&qmp->phy_mutex);
if (qmp->init_count++) {
@ -504,22 +504,16 @@ static int qcom_qmp_phy_pcie_msm8996_com_init(struct qmp_phy *qphy)
goto err_unlock;
}
for (i = 0; i < cfg->num_resets; i++) {
ret = reset_control_assert(qmp->resets[i]);
if (ret) {
dev_err(qmp->dev, "%s reset assert failed\n",
cfg->reset_list[i]);
goto err_disable_regulators;
}
ret = reset_control_bulk_assert(cfg->num_resets, qmp->resets);
if (ret) {
dev_err(qmp->dev, "reset assert failed\n");
goto err_disable_regulators;
}
for (i = cfg->num_resets - 1; i >= 0; i--) {
ret = reset_control_deassert(qmp->resets[i]);
if (ret) {
dev_err(qmp->dev, "%s reset deassert failed\n",
qphy->cfg->reset_list[i]);
goto err_assert_reset;
}
ret = reset_control_bulk_deassert(cfg->num_resets, qmp->resets);
if (ret) {
dev_err(qmp->dev, "reset deassert failed\n");
goto err_disable_regulators;
}
ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks);
@ -534,8 +528,7 @@ static int qcom_qmp_phy_pcie_msm8996_com_init(struct qmp_phy *qphy)
return 0;
err_assert_reset:
while (++i < cfg->num_resets)
reset_control_assert(qmp->resets[i]);
reset_control_bulk_assert(cfg->num_resets, qmp->resets);
err_disable_regulators:
regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
err_unlock:
@ -549,7 +542,6 @@ static int qcom_qmp_phy_pcie_msm8996_com_exit(struct qmp_phy *qphy)
struct qcom_qmp *qmp = qphy->qmp;
const struct qmp_phy_cfg *cfg = qphy->cfg;
void __iomem *serdes = qphy->serdes;
int i = cfg->num_resets;
mutex_lock(&qmp->phy_mutex);
if (--qmp->init_count) {
@ -564,8 +556,7 @@ static int qcom_qmp_phy_pcie_msm8996_com_exit(struct qmp_phy *qphy)
qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
SW_PWRDN);
while (--i >= 0)
reset_control_assert(qmp->resets[i]);
reset_control_bulk_assert(cfg->num_resets, qmp->resets);
clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);
@ -769,23 +760,19 @@ static int qcom_qmp_phy_pcie_msm8996_reset_init(struct device *dev, const struct
{
struct qcom_qmp *qmp = dev_get_drvdata(dev);
int i;
int ret;
qmp->resets = devm_kcalloc(dev, cfg->num_resets,
sizeof(*qmp->resets), GFP_KERNEL);
if (!qmp->resets)
return -ENOMEM;
for (i = 0; i < cfg->num_resets; i++) {
struct reset_control *rst;
const char *name = cfg->reset_list[i];
for (i = 0; i < cfg->num_resets; i++)
qmp->resets[i].id = cfg->reset_list[i];
rst = devm_reset_control_get_exclusive(dev, name);
if (IS_ERR(rst)) {
dev_err(dev, "failed to get %s reset\n", name);
return PTR_ERR(rst);
}
qmp->resets[i] = rst;
}
ret = devm_reset_control_bulk_get_exclusive(dev, cfg->num_resets, qmp->resets);
if (ret)
return dev_err_probe(dev, ret, "failed to get resets\n");
return 0;
}