[PATCH v5 03/16] phy: qcom-qmp-pcie: merge driver data

Johan Hovold
2022-11-05T15:03:53Z

The PCIe QMP PHY driver only manages a single PHY so merge the old
qcom_qmp and qmp_phy structures and drop the PHY array.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 218 +++++++++--------------
1 file changed, 88 insertions(+), 130 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index e66f6adc404b..667a87e7c917 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -1365,56 +1365,26 @@ struct qmp_phy_cfg {
unsigned long pipe_clock_rate;
};

-/**
- * struct qmp_phy - per-lane phy descriptor
- *
- * @phy: generic phy
- * @cfg: phy specific configuration
- * @serdes: iomapped memory space for phy's serdes (i.e. PLL)
- * @tx: iomapped memory space for lane's tx
- * @rx: iomapped memory space for lane's rx
- * @pcs: iomapped memory space for lane's pcs
- * @tx2: iomapped memory space for second lane's tx (in dual lane PHYs)
- * @rx2: iomapped memory space for second lane's rx (in dual lane PHYs)
- * @pcs_misc: iomapped memory space for lane's pcs_misc
- * @pipe_clk: pipe clock
- * @qmp: QMP phy to which this lane belongs
- * @mode: currently selected PHY mode
- */
-struct qmp_phy {
- struct phy *phy;
+struct qmp_pcie {
+ struct device *dev;
+
const struct qmp_phy_cfg *cfg;
+
void __iomem *serdes;
+ void __iomem *pcs;
+ void __iomem *pcs_misc;
void __iomem *tx;
void __iomem *rx;
- void __iomem *pcs;
void __iomem *tx2;
void __iomem *rx2;
- void __iomem *pcs_misc;
- struct clk *pipe_clk;
- struct qcom_qmp *qmp;
- int mode;
-};
-
-/**
- * struct qcom_qmp - structure holding QMP phy block attributes
- *
- * @dev: device
- *
- * @clks: array of clocks required by phy
- * @resets: array of resets required by phy
- * @vregs: regulator supplies bulk data
- *
- * @phys: array of per-lane phy descriptors
- */
-struct qcom_qmp {
- struct device *dev;

+ struct clk *pipe_clk;
struct clk_bulk_data *clks;
struct reset_control_bulk_data *resets;
struct regulator_bulk_data *vregs;

- struct qmp_phy **phys;
+ struct phy *phy;
+ int mode;
};

static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val)
@@ -1850,9 +1820,9 @@ static void qmp_pcie_configure(void __iomem *base,
qmp_pcie_configure_lane(base, tbl, num, 0xff);
}

-static void qmp_pcie_serdes_init(struct qmp_phy *qphy, const struct qmp_phy_cfg_tables *tables)
+static void qmp_pcie_serdes_init(struct qmp_pcie *qmp, const struct qmp_phy_cfg_tables *tables)
{
- void __iomem *serdes = qphy->serdes;
+ void __iomem *serdes = qmp->serdes;

if (!tables)
return;
@@ -1860,11 +1830,11 @@ static void qmp_pcie_serdes_init(struct qmp_phy *qphy, const struct qmp_phy_cfg_
qmp_pcie_configure(serdes, tables->serdes, tables->serdes_num);
}

-static void qmp_pcie_lanes_init(struct qmp_phy *qphy, const struct qmp_phy_cfg_tables *tables)
+static void qmp_pcie_lanes_init(struct qmp_pcie *qmp, const struct qmp_phy_cfg_tables *tables)
{
- const struct qmp_phy_cfg *cfg = qphy->cfg;
- void __iomem *tx = qphy->tx;
- void __iomem *rx = qphy->rx;
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ void __iomem *tx = qmp->tx;
+ void __iomem *rx = qmp->rx;

if (!tables)
return;
@@ -1872,17 +1842,17 @@ static void qmp_pcie_lanes_init(struct qmp_phy *qphy, const struct qmp_phy_cfg_t
qmp_pcie_configure_lane(tx, tables->tx, tables->tx_num, 1);

if (cfg->lanes >= 2)
- qmp_pcie_configure_lane(qphy->tx2, tables->tx, tables->tx_num, 2);
+ qmp_pcie_configure_lane(qmp->tx2, tables->tx, tables->tx_num, 2);

qmp_pcie_configure_lane(rx, tables->rx, tables->rx_num, 1);
if (cfg->lanes >= 2)
- qmp_pcie_configure_lane(qphy->rx2, tables->rx, tables->rx_num, 2);
+ qmp_pcie_configure_lane(qmp->rx2, tables->rx, tables->rx_num, 2);
}

-static void qmp_pcie_pcs_init(struct qmp_phy *qphy, const struct qmp_phy_cfg_tables *tables)
+static void qmp_pcie_pcs_init(struct qmp_pcie *qmp, const struct qmp_phy_cfg_tables *tables)
{
- void __iomem *pcs = qphy->pcs;
- void __iomem *pcs_misc = qphy->pcs_misc;
+ void __iomem *pcs = qmp->pcs;
+ void __iomem *pcs_misc = qmp->pcs_misc;

if (!tables)
return;
@@ -1893,9 +1863,8 @@ static void qmp_pcie_pcs_init(struct qmp_phy *qphy, const struct qmp_phy_cfg_tab

static int qmp_pcie_init(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;
+ struct qmp_pcie *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
int ret;

ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs);
@@ -1932,9 +1901,8 @@ static int qmp_pcie_init(struct phy *phy)

static int qmp_pcie_exit(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;
+ struct qmp_pcie *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;

reset_control_bulk_assert(cfg->num_resets, qmp->resets);

@@ -1947,11 +1915,10 @@ static int qmp_pcie_exit(struct phy *phy)

static int qmp_pcie_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;
+ struct qmp_pcie *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
const struct qmp_phy_cfg_tables *mode_tables;
- void __iomem *pcs = qphy->pcs;
+ void __iomem *pcs = qmp->pcs;
void __iomem *status;
unsigned int mask, val;
int ret;
@@ -1959,26 +1926,26 @@ static int qmp_pcie_power_on(struct phy *phy)
qphy_setbits(pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
cfg->pwrdn_ctrl);

- if (qphy->mode == PHY_MODE_PCIE_RC)
+ if (qmp->mode == PHY_MODE_PCIE_RC)
mode_tables = cfg->tables_rc;
else
mode_tables = cfg->tables_ep;

- qmp_pcie_serdes_init(qphy, &cfg->tables);
- qmp_pcie_serdes_init(qphy, mode_tables);
+ qmp_pcie_serdes_init(qmp, &cfg->tables);
+ qmp_pcie_serdes_init(qmp, mode_tables);

- ret = clk_prepare_enable(qphy->pipe_clk);
+ ret = clk_prepare_enable(qmp->pipe_clk);
if (ret) {
dev_err(qmp->dev, "pipe_clk enable failed err=%d\n", ret);
return ret;
}

/* Tx, Rx, and PCS configurations */
- qmp_pcie_lanes_init(qphy, &cfg->tables);
- qmp_pcie_lanes_init(qphy, mode_tables);
+ qmp_pcie_lanes_init(qmp, &cfg->tables);
+ qmp_pcie_lanes_init(qmp, mode_tables);

- qmp_pcie_pcs_init(qphy, &cfg->tables);
- qmp_pcie_pcs_init(qphy, mode_tables);
+ qmp_pcie_pcs_init(qmp, &cfg->tables);
+ qmp_pcie_pcs_init(qmp, mode_tables);

/* Pull PHY out of reset state */
qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
@@ -2001,27 +1968,27 @@ static int qmp_pcie_power_on(struct phy *phy)
return 0;

err_disable_pipe_clk:
- clk_disable_unprepare(qphy->pipe_clk);
+ clk_disable_unprepare(qmp->pipe_clk);

return ret;
}

static int qmp_pcie_power_off(struct phy *phy)
{
- struct qmp_phy *qphy = phy_get_drvdata(phy);
- const struct qmp_phy_cfg *cfg = qphy->cfg;
+ struct qmp_pcie *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;

- clk_disable_unprepare(qphy->pipe_clk);
+ clk_disable_unprepare(qmp->pipe_clk);

/* PHY reset */
- qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
+ qphy_setbits(qmp->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);

/* stop SerDes and Phy-Coding-Sublayer */
- qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL],
+ qphy_clrbits(qmp->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],
+ qphy_clrbits(qmp->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
cfg->pwrdn_ctrl);

return 0;
@@ -2055,12 +2022,12 @@ static int qmp_pcie_disable(struct phy *phy)

static int qmp_pcie_set_mode(struct phy *phy, enum phy_mode mode, int submode)
{
- struct qmp_phy *qphy = phy_get_drvdata(phy);
+ struct qmp_pcie *qmp = phy_get_drvdata(phy);

switch (submode) {
case PHY_MODE_PCIE_RC:
case PHY_MODE_PCIE_EP:
- qphy->mode = submode;
+ qmp->mode = submode;
break;
default:
dev_err(&phy->dev, "Unsupported submode %d\n", submode);
@@ -2072,7 +2039,7 @@ static int qmp_pcie_set_mode(struct phy *phy, enum phy_mode mode, int submode)

static int qmp_pcie_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
+ struct qmp_pcie *qmp = dev_get_drvdata(dev);
int num = cfg->num_vregs;
int i;

@@ -2088,7 +2055,7 @@ static int qmp_pcie_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)

static int qmp_pcie_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
+ struct qmp_pcie *qmp = dev_get_drvdata(dev);
int i;
int ret;

@@ -2109,7 +2076,7 @@ static int qmp_pcie_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg

static int qmp_pcie_clk_init(struct device *dev, const struct qmp_phy_cfg *cfg)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
+ struct qmp_pcie *qmp = dev_get_drvdata(dev);
int num = cfg->num_clks;
int i;

@@ -2146,7 +2113,7 @@ static void phy_clk_release_provider(void *res)
* clk | +-------+ | +-----+
* +---------------+
*/
-static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
+static int phy_pipe_clk_register(struct qmp_pcie *qmp, struct device_node *np)
{
struct clk_fixed_rate *fixed;
struct clk_init_data init = { };
@@ -2168,8 +2135,8 @@ static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
* Controllers using QMP PHY-s use 125MHz pipe clock interface
* unless other frequency is specified in the PHY config.
*/
- if (qmp->phys[0]->cfg->pipe_clock_rate)
- fixed->fixed_rate = qmp->phys[0]->cfg->pipe_clock_rate;
+ if (qmp->cfg->pipe_clock_rate)
+ fixed->fixed_rate = qmp->cfg->pipe_clock_rate;
else
fixed->fixed_rate = 125000000;

@@ -2197,97 +2164,92 @@ static const struct phy_ops qmp_pcie_ops = {
.owner = THIS_MODULE,
};

-static int qmp_pcie_create(struct device *dev, struct device_node *np, int id,
+static int qmp_pcie_create(struct device *dev, struct device_node *np,
void __iomem *serdes, const struct qmp_phy_cfg *cfg)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
+ struct qmp_pcie *qmp = dev_get_drvdata(dev);
struct phy *generic_phy;
- struct qmp_phy *qphy;
int ret;

- qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL);
- if (!qphy)
- return -ENOMEM;
+ qmp->mode = PHY_MODE_PCIE_RC;

- qphy->mode = PHY_MODE_PCIE_RC;
+ qmp->cfg = cfg;
+ qmp->serdes = serdes;

- qphy->cfg = cfg;
- qphy->serdes = serdes;
/*
* Get memory resources for the PHY:
* Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2.
* For dual lane PHYs: tx2 -> 3, rx2 -> 4, pcs_misc (optional) -> 5
* For single lane PHYs: pcs_misc (optional) -> 3.
*/
- qphy->tx = devm_of_iomap(dev, np, 0, NULL);
- if (IS_ERR(qphy->tx))
- return PTR_ERR(qphy->tx);
+ qmp->tx = devm_of_iomap(dev, np, 0, NULL);
+ if (IS_ERR(qmp->tx))
+ return PTR_ERR(qmp->tx);

if (of_device_is_compatible(dev->of_node, "qcom,sdm845-qhp-pcie-phy"))
- qphy->rx = qphy->tx;
+ qmp->rx = qmp->tx;
else
- qphy->rx = devm_of_iomap(dev, np, 1, NULL);
- if (IS_ERR(qphy->rx))
- return PTR_ERR(qphy->rx);
+ qmp->rx = devm_of_iomap(dev, np, 1, NULL);
+ if (IS_ERR(qmp->rx))
+ return PTR_ERR(qmp->rx);

- qphy->pcs = devm_of_iomap(dev, np, 2, NULL);
- if (IS_ERR(qphy->pcs))
- return PTR_ERR(qphy->pcs);
+ qmp->pcs = devm_of_iomap(dev, np, 2, NULL);
+ if (IS_ERR(qmp->pcs))
+ return PTR_ERR(qmp->pcs);

if (cfg->lanes >= 2) {
- qphy->tx2 = devm_of_iomap(dev, np, 3, NULL);
- if (IS_ERR(qphy->tx2))
- return PTR_ERR(qphy->tx2);
+ qmp->tx2 = devm_of_iomap(dev, np, 3, NULL);
+ if (IS_ERR(qmp->tx2))
+ return PTR_ERR(qmp->tx2);

- qphy->rx2 = devm_of_iomap(dev, np, 4, NULL);
- if (IS_ERR(qphy->rx2))
- return PTR_ERR(qphy->rx2);
+ qmp->rx2 = devm_of_iomap(dev, np, 4, NULL);
+ if (IS_ERR(qmp->rx2))
+ return PTR_ERR(qmp->rx2);

- qphy->pcs_misc = devm_of_iomap(dev, np, 5, NULL);
+ qmp->pcs_misc = devm_of_iomap(dev, np, 5, NULL);
} else {
- qphy->pcs_misc = devm_of_iomap(dev, np, 3, NULL);
+ qmp->pcs_misc = devm_of_iomap(dev, np, 3, NULL);
}

- if (IS_ERR(qphy->pcs_misc) &&
+ if (IS_ERR(qmp->pcs_misc) &&
of_device_is_compatible(dev->of_node, "qcom,ipq6018-qmp-pcie-phy"))
- qphy->pcs_misc = qphy->pcs + 0x400;
+ qmp->pcs_misc = qmp->pcs + 0x400;

- if (IS_ERR(qphy->pcs_misc)) {
+ if (IS_ERR(qmp->pcs_misc)) {
if (cfg->tables.pcs_misc ||
(cfg->tables_rc && cfg->tables_rc->pcs_misc) ||
- (cfg->tables_ep && cfg->tables_ep->pcs_misc))
- return PTR_ERR(qphy->pcs_misc);
+ (cfg->tables_ep && cfg->tables_ep->pcs_misc)) {
+ return PTR_ERR(qmp->pcs_misc);
+ }
}

- qphy->pipe_clk = devm_get_clk_from_child(dev, np, NULL);
- if (IS_ERR(qphy->pipe_clk)) {
- return dev_err_probe(dev, PTR_ERR(qphy->pipe_clk),
- "failed to get lane%d pipe clock\n", id);
+ qmp->pipe_clk = devm_get_clk_from_child(dev, np, NULL);
+ if (IS_ERR(qmp->pipe_clk)) {
+ return dev_err_probe(dev, PTR_ERR(qmp->pipe_clk),
+ "failed to get pipe clock\n");
}

generic_phy = devm_phy_create(dev, np, &qmp_pcie_ops);
if (IS_ERR(generic_phy)) {
ret = PTR_ERR(generic_phy);
- dev_err(dev, "failed to create qphy %d\n", ret);
+ dev_err(dev, "failed to create PHY: %d\n", ret);
return ret;
}

- qphy->phy = generic_phy;
- qphy->qmp = qmp;
- qmp->phys[id] = qphy;
- phy_set_drvdata(generic_phy, qphy);
+ qmp->phy = generic_phy;
+ phy_set_drvdata(generic_phy, qmp);

return 0;
}

static int qmp_pcie_probe(struct platform_device *pdev)
{
- struct qcom_qmp *qmp;
struct device *dev = &pdev->dev;
struct device_node *child;
struct phy_provider *phy_provider;
void __iomem *serdes;
const struct qmp_phy_cfg *cfg = NULL;
+ struct qmp_pcie *qmp;
int num, id;
int ret;

@@ -2326,14 +2288,10 @@ static int qmp_pcie_probe(struct platform_device *pdev)
if (num > 1)
return -EINVAL;

- qmp->phys = devm_kcalloc(dev, num, sizeof(*qmp->phys), GFP_KERNEL);
- if (!qmp->phys)
- return -ENOMEM;
-
id = 0;
for_each_available_child_of_node(dev->of_node, child) {
/* Create per-lane phy */
- ret = qmp_pcie_create(dev, child, id, serdes, cfg);
+ ret = qmp_pcie_create(dev, child, serdes, cfg);
if (ret) {
dev_err(dev, "failed to create lane%d phy, %d\n",
id, ret);
--
2.37.4