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Commit faf83af5 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Vinod Koul
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phy: qcom-qmp-usb: cleanup the driver 

Remove the conditionals and options that are not used by any of USB PHY
devices.
Acked-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> # UFS, PCIe and USB on SC8180X
Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220607213203.2819885-24-dmitry.baryshkov@linaro.orgSigned-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 3e1865ba
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Showing with 11 additions and 203 deletions
drivers/phy/qualcomm/phy-qcom-qmp-usb.c
View file @ faf83af5
......@@ -1359,40 +1359,12 @@ struct qmp_phy_cfg {
/* Init sequence for PHY blocks - serdes, tx, rx, pcs */
const struct qmp_phy_init_tbl *serdes_tbl;
int serdes_tbl_num;
const struct qmp_phy_init_tbl *serdes_tbl_sec;
int serdes_tbl_num_sec;
const struct qmp_phy_init_tbl *tx_tbl;
int tx_tbl_num;
const struct qmp_phy_init_tbl *tx_tbl_sec;
int tx_tbl_num_sec;
const struct qmp_phy_init_tbl *rx_tbl;
int rx_tbl_num;
const struct qmp_phy_init_tbl *rx_tbl_sec;
int rx_tbl_num_sec;
const struct qmp_phy_init_tbl *pcs_tbl;
int pcs_tbl_num;
const struct qmp_phy_init_tbl *pcs_tbl_sec;
int pcs_tbl_num_sec;
const struct qmp_phy_init_tbl *pcs_misc_tbl;
int pcs_misc_tbl_num;
const struct qmp_phy_init_tbl *pcs_misc_tbl_sec;
int pcs_misc_tbl_num_sec;
/* Init sequence for DP PHY block link rates */
const struct qmp_phy_init_tbl *serdes_tbl_rbr;
int serdes_tbl_rbr_num;
const struct qmp_phy_init_tbl *serdes_tbl_hbr;
int serdes_tbl_hbr_num;
const struct qmp_phy_init_tbl *serdes_tbl_hbr2;
int serdes_tbl_hbr2_num;
const struct qmp_phy_init_tbl *serdes_tbl_hbr3;
int serdes_tbl_hbr3_num;
/* DP PHY callbacks */
int (*configure_dp_phy)(struct qmp_phy *qphy);
void (*configure_dp_tx)(struct qmp_phy *qphy);
int (*calibrate_dp_phy)(struct qmp_phy *qphy);
void (*dp_aux_init)(struct qmp_phy *qphy);
/* clock ids to be requested */
const char * const *clk_list;
......@@ -1409,14 +1381,9 @@ struct qmp_phy_cfg {
unsigned int start_ctrl;
unsigned int pwrdn_ctrl;
unsigned int mask_com_pcs_ready;
/* bit offset of PHYSTATUS in QPHY_PCS_STATUS register */
unsigned int phy_status;
/* true, if PHY has a separate PHY_COM control block */
bool has_phy_com_ctrl;
/* true, if PHY has a reset for individual lanes */
bool has_lane_rst;
/* true, if PHY needs delay after POWER_DOWN */
bool has_pwrdn_delay;
/* power_down delay in usec */
......@@ -1427,14 +1394,6 @@ struct qmp_phy_cfg {
bool has_phy_dp_com_ctrl;
/* true, if PHY has secondary tx/rx lanes to be configured */
bool is_dual_lane_phy;
/* true, if PCS block has no separate SW_RESET register */
bool no_pcs_sw_reset;
};
struct qmp_phy_combo_cfg {
const struct qmp_phy_cfg *usb_cfg;
const struct qmp_phy_cfg *dp_cfg;
};
/**
......@@ -1452,11 +1411,7 @@ struct qmp_phy_combo_cfg {
* @pipe_clk: pipe clock
* @index: lane index
* @qmp: QMP phy to which this lane belongs
* @lane_rst: lane's reset controller
* @mode: current PHY mode
* @dp_aux_cfg: Display port aux config
* @dp_opts: Display port optional config
* @dp_clks: Display port clocks
*/
struct qmp_phy {
struct phy *phy;
......@@ -1471,17 +1426,7 @@ struct qmp_phy {
struct clk *pipe_clk;
unsigned int index;
struct qcom_qmp *qmp;
struct reset_control *lane_rst;
enum phy_mode mode;
unsigned int dp_aux_cfg;
struct phy_configure_opts_dp dp_opts;
struct qmp_phy_dp_clks *dp_clks;
};
struct qmp_phy_dp_clks {
struct qmp_phy *qphy;
struct clk_hw dp_link_hw;
struct clk_hw dp_pixel_hw;
};
/**
......@@ -1497,7 +1442,6 @@ struct qmp_phy_dp_clks {
* @phys: array of per-lane phy descriptors
* @phy_mutex: mutex lock for PHY common block initialization
* @init_count: phy common block initialization count
* @ufs_reset: optional UFS PHY reset handle
*/
struct qcom_qmp {
struct device *dev;
......@@ -1511,8 +1455,6 @@ struct qcom_qmp {
struct mutex phy_mutex;
int init_count;
struct reset_control *ufs_reset;
};
static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val)
......@@ -2056,37 +1998,12 @@ static void qcom_qmp_phy_usb_configure(void __iomem *base,
static int qcom_qmp_phy_usb_serdes_init(struct qmp_phy *qphy)
{
struct qcom_qmp *qmp = qphy->qmp;
const struct qmp_phy_cfg *cfg = qphy->cfg;
void __iomem *serdes = qphy->serdes;
const struct qmp_phy_init_tbl *serdes_tbl = cfg->serdes_tbl;
int serdes_tbl_num = cfg->serdes_tbl_num;
int ret;
qcom_qmp_phy_usb_configure(serdes, cfg->regs, serdes_tbl, serdes_tbl_num);
if (cfg->serdes_tbl_sec)
qcom_qmp_phy_usb_configure(serdes, cfg->regs, cfg->serdes_tbl_sec,
cfg->serdes_tbl_num_sec);
if (cfg->has_phy_com_ctrl) {
void __iomem *status;
unsigned int mask, val;
qphy_clrbits(serdes, cfg->regs[QPHY_COM_SW_RESET], SW_RESET);
qphy_setbits(serdes, cfg->regs[QPHY_COM_START_CONTROL],
SERDES_START | PCS_START);
status = serdes + cfg->regs[QPHY_COM_PCS_READY_STATUS];
mask = cfg->mask_com_pcs_ready;
ret = readl_poll_timeout(status, val, (val & mask), 10,
PHY_INIT_COMPLETE_TIMEOUT);
if (ret) {
dev_err(qmp->dev,
"phy common block init timed-out\n");
return ret;
}
}
return 0;
}
......@@ -2095,7 +2012,6 @@ static int qcom_qmp_phy_usb_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;
void __iomem *pcs = qphy->pcs;
void __iomem *dp_com = qmp->dp_com;
int ret, i;
......@@ -2158,18 +2074,13 @@ static int qcom_qmp_phy_usb_com_init(struct qmp_phy *qphy)
qphy_clrbits(dp_com, QPHY_V3_DP_COM_SW_RESET, SW_RESET);
}
if (cfg->has_phy_com_ctrl) {
qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
SW_PWRDN);
} else {
if (cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL])
qphy_setbits(pcs,
cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
cfg->pwrdn_ctrl);
else
qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL,
cfg->pwrdn_ctrl);
}
if (cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL])
qphy_setbits(pcs,
cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
cfg->pwrdn_ctrl);
else
qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL,
cfg->pwrdn_ctrl);
mutex_unlock(&qmp->phy_mutex);
......@@ -2190,7 +2101,6 @@ static int qcom_qmp_phy_usb_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);
......@@ -2199,16 +2109,6 @@ static int qcom_qmp_phy_usb_com_exit(struct qmp_phy *qphy)
return 0;
}
reset_control_assert(qmp->ufs_reset);
if (cfg->has_phy_com_ctrl) {
qphy_setbits(serdes, cfg->regs[QPHY_COM_START_CONTROL],
SERDES_START | PCS_START);
qphy_clrbits(serdes, cfg->regs[QPHY_COM_SW_RESET],
SW_RESET);
qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
SW_PWRDN);
}
while (--i >= 0)
reset_control_assert(qmp->resets[i]);
......@@ -2225,37 +2125,9 @@ static int qcom_qmp_phy_usb_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;
int ret;
dev_vdbg(qmp->dev, "Initializing QMP phy\n");
if (cfg->no_pcs_sw_reset) {
/*
* Get UFS reset, which is delayed until now to avoid a
* circular dependency where UFS needs its PHY, but the PHY
* needs this UFS reset.
*/
if (!qmp->ufs_reset) {
qmp->ufs_reset =
devm_reset_control_get_exclusive(qmp->dev,
"ufsphy");
if (IS_ERR(qmp->ufs_reset)) {
ret = PTR_ERR(qmp->ufs_reset);
dev_err(qmp->dev,
"failed to get UFS reset: %d\n",
ret);
qmp->ufs_reset = NULL;
return ret;
}
}
ret = reset_control_assert(qmp->ufs_reset);
if (ret)
return ret;
}
ret = qcom_qmp_phy_usb_com_init(qphy);
if (ret)
return ret;
......@@ -2271,82 +2143,45 @@ static int qcom_qmp_phy_usb_power_on(struct phy *phy)
void __iomem *tx = qphy->tx;
void __iomem *rx = qphy->rx;
void __iomem *pcs = qphy->pcs;
void __iomem *pcs_misc = qphy->pcs_misc;
void __iomem *status;
unsigned int mask, val, ready;
int ret;
qcom_qmp_phy_usb_serdes_init(qphy);
if (cfg->has_lane_rst) {
ret = reset_control_deassert(qphy->lane_rst);
if (ret) {
dev_err(qmp->dev, "lane%d reset deassert failed\n",
qphy->index);
return ret;
}
}
ret = clk_prepare_enable(qphy->pipe_clk);
if (ret) {
dev_err(qmp->dev, "pipe_clk enable failed err=%d\n", ret);
goto err_reset_lane;
return ret;
}
/* Tx, Rx, and PCS configurations */
qcom_qmp_phy_usb_configure_lane(tx, cfg->regs,
cfg->tx_tbl, cfg->tx_tbl_num, 1);
if (cfg->tx_tbl_sec)
qcom_qmp_phy_usb_configure_lane(tx, cfg->regs, cfg->tx_tbl_sec,
cfg->tx_tbl_num_sec, 1);
/* Configuration for other LANE for USB-DP combo PHY */
if (cfg->is_dual_lane_phy) {
qcom_qmp_phy_usb_configure_lane(qphy->tx2, cfg->regs,
cfg->tx_tbl, cfg->tx_tbl_num, 2);
if (cfg->tx_tbl_sec)
qcom_qmp_phy_usb_configure_lane(qphy->tx2, cfg->regs,
cfg->tx_tbl_sec,
cfg->tx_tbl_num_sec, 2);
}
qcom_qmp_phy_usb_configure_lane(rx, cfg->regs,
cfg->rx_tbl, cfg->rx_tbl_num, 1);
if (cfg->rx_tbl_sec)
qcom_qmp_phy_usb_configure_lane(rx, cfg->regs,
cfg->rx_tbl_sec, cfg->rx_tbl_num_sec, 1);
if (cfg->is_dual_lane_phy) {
qcom_qmp_phy_usb_configure_lane(qphy->rx2, cfg->regs,
cfg->rx_tbl, cfg->rx_tbl_num, 2);
if (cfg->rx_tbl_sec)
qcom_qmp_phy_usb_configure_lane(qphy->rx2, cfg->regs,
cfg->rx_tbl_sec,
cfg->rx_tbl_num_sec, 2);
}
/* Configure link rate, swing, etc. */
qcom_qmp_phy_usb_configure(pcs, cfg->regs, cfg->pcs_tbl, cfg->pcs_tbl_num);
if (cfg->pcs_tbl_sec)
qcom_qmp_phy_usb_configure(pcs, cfg->regs, cfg->pcs_tbl_sec,
cfg->pcs_tbl_num_sec);
ret = reset_control_deassert(qmp->ufs_reset);
if (ret)
goto err_disable_pipe_clk;
qcom_qmp_phy_usb_configure(pcs_misc, cfg->regs, cfg->pcs_misc_tbl,
cfg->pcs_misc_tbl_num);
if (cfg->pcs_misc_tbl_sec)
qcom_qmp_phy_usb_configure(pcs_misc, cfg->regs, cfg->pcs_misc_tbl_sec,
cfg->pcs_misc_tbl_num_sec);
if (cfg->has_pwrdn_delay)
usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max);
/* Pull PHY out of reset state */
if (!cfg->no_pcs_sw_reset)
qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
/* start SerDes and Phy-Coding-Sublayer */
qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl);
......@@ -2365,9 +2200,6 @@ static int qcom_qmp_phy_usb_power_on(struct phy *phy)
err_disable_pipe_clk:
clk_disable_unprepare(qphy->pipe_clk);
err_reset_lane:
if (cfg->has_lane_rst)
reset_control_assert(qphy->lane_rst);
return ret;
}
......@@ -2380,8 +2212,7 @@ static int qcom_qmp_phy_usb_power_off(struct phy *phy)
clk_disable_unprepare(qphy->pipe_clk);
/* PHY reset */
if (!cfg->no_pcs_sw_reset)
qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_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], cfg->start_ctrl);
......@@ -2401,10 +2232,6 @@ static int qcom_qmp_phy_usb_power_off(struct phy *phy)
static int qcom_qmp_phy_usb_exit(struct phy *phy)
{
struct qmp_phy *qphy = phy_get_drvdata(phy);
const struct qmp_phy_cfg *cfg = qphy->cfg;
if (cfg->has_lane_rst)
reset_control_assert(qphy->lane_rst);
qcom_qmp_phy_usb_com_exit(qphy);
......@@ -2676,11 +2503,6 @@ static const struct phy_ops qcom_qmp_phy_usb_ops = {
.owner = THIS_MODULE,
};
static void qcom_qmp_reset_control_put(void *data)
{
reset_control_put(data);
}
static
int qcom_qmp_phy_usb_create(struct device *dev, struct device_node *np, int id,
void __iomem *serdes, const struct qmp_phy_cfg *cfg)
......@@ -2762,20 +2584,6 @@ int qcom_qmp_phy_usb_create(struct device *dev, struct device_node *np, int id,
return ret;
}
/* Get lane reset, if any */
if (cfg->has_lane_rst) {
snprintf(prop_name, sizeof(prop_name), "lane%d", id);
qphy->lane_rst = of_reset_control_get_exclusive(np, prop_name);
if (IS_ERR(qphy->lane_rst)) {
dev_err(dev, "failed to get lane%d reset\n", id);
return PTR_ERR(qphy->lane_rst);
}
ret = devm_add_action_or_reset(dev, qcom_qmp_reset_control_put,
qphy->lane_rst);
if (ret)
return ret;
}
generic_phy = devm_phy_create(dev, np, &qcom_qmp_phy_usb_ops);
if (IS_ERR(generic_phy)) {
ret = PTR_ERR(generic_phy);
......
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