/* 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;
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 */
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;
};
/**
* @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;
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;
};
/**
* @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;
struct mutex phy_mutex;
int init_count;
-
- struct reset_control *ufs_reset;
};
static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val)
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;
}
{
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;
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);
{
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);
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]);
{
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;
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);
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;
}
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);
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);
.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)
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);
projects / platform / kernel / linux-rpi.git / commitdiff