Now that all compatible hardware is handled by the corresponding split
QMP PHY subdrivers, drop the old monolithic driver.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
drivers/phy/qualcomm/Makefile | 3 +-
drivers/phy/qualcomm/phy-qcom-qmp.c | 1593 ---------------------------
2 files changed, 1 insertion(+), 1595 deletions(-)
delete mode 100644 drivers/phy/qualcomm/phy-qcom-qmp.c
diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile
index 3ec4c0f49b18..b7f503cca24d 100644
--- a/drivers/phy/qualcomm/Makefile
+++ b/drivers/phy/qualcomm/Makefile
@@ -10,8 +10,7 @@ obj-$(CONFIG_PHY_QCOM_QMP) += \
phy-qcom-qmp-lib.o \
phy-qcom-qmp-pcie.o \
phy-qcom-qmp-ufs.o \
- phy-qcom-qmp-usb.o \
- phy-qcom-qmp.o
+ phy-qcom-qmp-usb.o
obj-$(CONFIG_PHY_QCOM_QUSB2) += phy-qcom-qusb2.o
obj-$(CONFIG_PHY_QCOM_USB_HS) += phy-qcom-usb-hs.o
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
deleted file mode 100644
index 1ba9ecbb2d8b..000000000000
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ /dev/null
@@ -1,1593 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (c) 2017, The Linux Foundation. All rights reserved.
- */
-
-#include <linux/clk.h>
-#include <linux/clk-provider.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/iopoll.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_address.h>
-#include <linux/phy/phy.h>
-#include <linux/platform_device.h>
-#include <linux/regulator/consumer.h>
-#include <linux/reset.h>
-#include <linux/slab.h>
-
-#include <dt-bindings/phy/phy.h>
-
-#include "phy-qcom-qmp.h"
-
-/* QPHY_SW_RESET bit */
-#define SW_RESET BIT(0)
-/* QPHY_POWER_DOWN_CONTROL */
-#define SW_PWRDN BIT(0)
-#define REFCLK_DRV_DSBL BIT(1)
-/* QPHY_START_CONTROL bits */
-#define SERDES_START BIT(0)
-#define PCS_START BIT(1)
-#define PLL_READY_GATE_EN BIT(3)
-/* QPHY_PCS_STATUS bit */
-#define PHYSTATUS BIT(6)
-#define PHYSTATUS_4_20 BIT(7)
-/* QPHY_PCS_READY_STATUS & QPHY_COM_PCS_READY_STATUS bit */
-#define PCS_READY BIT(0)
-
-/* QPHY_V3_DP_COM_RESET_OVRD_CTRL register bits */
-/* DP PHY soft reset */
-#define SW_DPPHY_RESET BIT(0)
-/* mux to select DP PHY reset control, 0:HW control, 1: software reset */
-#define SW_DPPHY_RESET_MUX BIT(1)
-/* USB3 PHY soft reset */
-#define SW_USB3PHY_RESET BIT(2)
-/* mux to select USB3 PHY reset control, 0:HW control, 1: software reset */
-#define SW_USB3PHY_RESET_MUX BIT(3)
-
-/* QPHY_V3_DP_COM_PHY_MODE_CTRL register bits */
-#define USB3_MODE BIT(0) /* enables USB3 mode */
-#define DP_MODE BIT(1) /* enables DP mode */
-
-/* QPHY_PCS_AUTONOMOUS_MODE_CTRL register bits */
-#define ARCVR_DTCT_EN BIT(0)
-#define ALFPS_DTCT_EN BIT(1)
-#define ARCVR_DTCT_EVENT_SEL BIT(4)
-
-/* QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR register bits */
-#define IRQ_CLEAR BIT(0)
-
-/* QPHY_PCS_LFPS_RXTERM_IRQ_STATUS register bits */
-#define RCVR_DETECT BIT(0)
-
-/* QPHY_V3_PCS_MISC_CLAMP_ENABLE register bits */
-#define CLAMP_EN BIT(0) /* enables i/o clamp_n */
-
-#define PHY_INIT_COMPLETE_TIMEOUT 10000
-#define POWER_DOWN_DELAY_US_MIN 10
-#define POWER_DOWN_DELAY_US_MAX 11
-
-#define MAX_PROP_NAME 32
-
-/* Define the assumed distance between lanes for underspecified device trees. */
-#define QMP_PHY_LEGACY_LANE_STRIDE 0x400
-
-struct qmp_phy_init_tbl {
- unsigned int offset;
- unsigned int val;
- /*
- * register part of layout ?
- * if yes, then offset gives index in the reg-layout
- */
- bool in_layout;
- /*
- * mask of lanes for which this register is written
- * for cases when second lane needs different values
- */
- u8 lane_mask;
-};
-
-#define QMP_PHY_INIT_CFG(o, v) \
- { \
- .offset = o, \
- .val = v, \
- .lane_mask = 0xff, \
- }
-
-#define QMP_PHY_INIT_CFG_L(o, v) \
- { \
- .offset = o, \
- .val = v, \
- .in_layout = true, \
- .lane_mask = 0xff, \
- }
-
-#define QMP_PHY_INIT_CFG_LANE(o, v, l) \
- { \
- .offset = o, \
- .val = v, \
- .lane_mask = l, \
- }
-
-/* set of registers with offsets different per-PHY */
-enum qphy_reg_layout {
- /* Common block control registers */
- QPHY_COM_SW_RESET,
- QPHY_COM_POWER_DOWN_CONTROL,
- QPHY_COM_START_CONTROL,
- QPHY_COM_PCS_READY_STATUS,
- /* PCS registers */
- QPHY_PLL_LOCK_CHK_DLY_TIME,
- QPHY_FLL_CNTRL1,
- QPHY_FLL_CNTRL2,
- QPHY_FLL_CNT_VAL_L,
- QPHY_FLL_CNT_VAL_H_TOL,
- QPHY_FLL_MAN_CODE,
- QPHY_SW_RESET,
- QPHY_START_CTRL,
- QPHY_PCS_READY_STATUS,
- QPHY_PCS_STATUS,
- QPHY_PCS_AUTONOMOUS_MODE_CTRL,
- QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR,
- QPHY_PCS_LFPS_RXTERM_IRQ_STATUS,
- QPHY_PCS_POWER_DOWN_CONTROL,
- /* PCS_MISC registers */
- QPHY_PCS_MISC_TYPEC_CTRL,
- /* Keep last to ensure regs_layout arrays are properly initialized */
- QPHY_LAYOUT_SIZE
-};
-
-struct qmp_phy;
-
-/* struct qmp_phy_cfg - per-PHY initialization config */
-struct qmp_phy_cfg {
- /* phy-type - PCIE/UFS/USB */
- unsigned int type;
- /* number of lanes provided by phy */
- int nlanes;
-
- /* 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;
- int num_clks;
- /* resets to be requested */
- const char * const *reset_list;
- int num_resets;
- /* regulators to be requested */
- const char * const *vreg_list;
- int num_vregs;
-
- /* array of registers with different offsets */
- const unsigned int *regs;
-
- 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 */
- int pwrdn_delay_min;
- int pwrdn_delay_max;
-
- /* true, if PHY has a separate DP_COM control block */
- 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;
-};
-
-/**
- * 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
- * @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;
- const struct qmp_phy_cfg *cfg;
- void __iomem *serdes;
- void __iomem *tx;
- void __iomem *rx;
- void __iomem *pcs;
- void __iomem *tx2;
- void __iomem *rx2;
- void __iomem *pcs_misc;
- 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;
-};
-
-/**
- * struct qcom_qmp - structure holding QMP phy block attributes
- *
- * @dev: device
- * @dp_com: iomapped memory space for phy's dp_com control block
- *
- * @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
- * @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;
- void __iomem *dp_com;
-
- struct clk_bulk_data *clks;
- struct reset_control **resets;
- struct regulator_bulk_data *vregs;
-
- struct qmp_phy **phys;
-
- struct mutex phy_mutex;
- int init_count;
-
- struct reset_control *ufs_reset;
-};
-
-static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val)
-{
- u32 reg;
-
- reg = readl(base + offset);
- reg |= val;
- writel(reg, base + offset);
-
- /* ensure that above write is through */
- readl(base + offset);
-}
-
-static inline void qphy_clrbits(void __iomem *base, u32 offset, u32 val)
-{
- u32 reg;
-
- reg = readl(base + offset);
- reg &= ~val;
- writel(reg, base + offset);
-
- /* ensure that above write is through */
- readl(base + offset);
-}
-
-static void qcom_qmp_phy_configure_lane(void __iomem *base,
- const unsigned int *regs,
- const struct qmp_phy_init_tbl tbl[],
- int num,
- u8 lane_mask)
-{
- int i;
- const struct qmp_phy_init_tbl *t = tbl;
-
- if (!t)
- return;
-
- for (i = 0; i < num; i++, t++) {
- if (!(t->lane_mask & lane_mask))
- continue;
-
- if (t->in_layout)
- writel(t->val, base + regs[t->offset]);
- else
- writel(t->val, base + t->offset);
- }
-}
-
-static void qcom_qmp_phy_configure(void __iomem *base,
- const unsigned int *regs,
- const struct qmp_phy_init_tbl tbl[],
- int num)
-{
- qcom_qmp_phy_configure_lane(base, regs, tbl, num, 0xff);
-}
-
-static int qcom_qmp_phy_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 phy_configure_opts_dp *dp_opts = &qphy->dp_opts;
- const struct qmp_phy_init_tbl *serdes_tbl = cfg->serdes_tbl;
- int serdes_tbl_num = cfg->serdes_tbl_num;
- int ret;
-
- qcom_qmp_phy_configure(serdes, cfg->regs, serdes_tbl, serdes_tbl_num);
- if (cfg->serdes_tbl_sec)
- qcom_qmp_phy_configure(serdes, cfg->regs, cfg->serdes_tbl_sec,
- cfg->serdes_tbl_num_sec);
-
- if (cfg->type == PHY_TYPE_DP) {
- switch (dp_opts->link_rate) {
- case 1620:
- qcom_qmp_phy_configure(serdes, cfg->regs,
- cfg->serdes_tbl_rbr,
- cfg->serdes_tbl_rbr_num);
- break;
- case 2700:
- qcom_qmp_phy_configure(serdes, cfg->regs,
- cfg->serdes_tbl_hbr,
- cfg->serdes_tbl_hbr_num);
- break;
- case 5400:
- qcom_qmp_phy_configure(serdes, cfg->regs,
- cfg->serdes_tbl_hbr2,
- cfg->serdes_tbl_hbr2_num);
- break;
- case 8100:
- qcom_qmp_phy_configure(serdes, cfg->regs,
- cfg->serdes_tbl_hbr3,
- cfg->serdes_tbl_hbr3_num);
- break;
- default:
- /* Other link rates aren't supported */
- return -EINVAL;
- }
- }
-
-
- 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;
-}
-
-static int qcom_qmp_dp_phy_configure(struct phy *phy, union phy_configure_opts *opts)
-{
- const struct phy_configure_opts_dp *dp_opts = &opts->dp;
- struct qmp_phy *qphy = phy_get_drvdata(phy);
- const struct qmp_phy_cfg *cfg = qphy->cfg;
-
- memcpy(&qphy->dp_opts, dp_opts, sizeof(*dp_opts));
- if (qphy->dp_opts.set_voltages) {
- cfg->configure_dp_tx(qphy);
- qphy->dp_opts.set_voltages = 0;
- }
-
- return 0;
-}
-
-static int qcom_qmp_dp_phy_calibrate(struct phy *phy)
-{
- struct qmp_phy *qphy = phy_get_drvdata(phy);
- const struct qmp_phy_cfg *cfg = qphy->cfg;
-
- if (cfg->calibrate_dp_phy)
- return cfg->calibrate_dp_phy(qphy);
-
- return 0;
-}
-
-static int qcom_qmp_phy_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;
-
- mutex_lock(&qmp->phy_mutex);
- if (qmp->init_count++) {
- mutex_unlock(&qmp->phy_mutex);
- return 0;
- }
-
- /* turn on regulator supplies */
- ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs);
- if (ret) {
- dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret);
- 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;
- }
- }
-
- 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 = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks);
- if (ret)
- goto err_assert_reset;
-
- if (cfg->has_phy_dp_com_ctrl) {
- qphy_setbits(dp_com, QPHY_V3_DP_COM_POWER_DOWN_CTRL,
- SW_PWRDN);
- /* override hardware control for reset of qmp phy */
- qphy_setbits(dp_com, QPHY_V3_DP_COM_RESET_OVRD_CTRL,
- SW_DPPHY_RESET_MUX | SW_DPPHY_RESET |
- SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET);
-
- /* Default type-c orientation, i.e CC1 */
- qphy_setbits(dp_com, QPHY_V3_DP_COM_TYPEC_CTRL, 0x02);
-
- qphy_setbits(dp_com, QPHY_V3_DP_COM_PHY_MODE_CTRL,
- USB3_MODE | DP_MODE);
-
- /* bring both QMP USB and QMP DP PHYs PCS block out of reset */
- qphy_clrbits(dp_com, QPHY_V3_DP_COM_RESET_OVRD_CTRL,
- SW_DPPHY_RESET_MUX | SW_DPPHY_RESET |
- SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET);
-
- qphy_clrbits(dp_com, QPHY_V3_DP_COM_SWI_CTRL, 0x03);
- 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);
- }
-
- mutex_unlock(&qmp->phy_mutex);
-
- return 0;
-
-err_assert_reset:
- while (++i < cfg->num_resets)
- reset_control_assert(qmp->resets[i]);
-err_disable_regulators:
- regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
-err_unlock:
- mutex_unlock(&qmp->phy_mutex);
-
- return ret;
-}
-
-static int qcom_qmp_phy_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) {
- mutex_unlock(&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]);
-
- clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);
-
- regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
-
- mutex_unlock(&qmp->phy_mutex);
-
- return 0;
-}
-
-static int qcom_qmp_phy_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_com_init(qphy);
- if (ret)
- return ret;
-
- if (cfg->type == PHY_TYPE_DP)
- cfg->dp_aux_init(qphy);
-
- return 0;
-}
-
-static int qcom_qmp_phy_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;
- 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_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;
- }
-
- /* Tx, Rx, and PCS configurations */
- qcom_qmp_phy_configure_lane(tx, cfg->regs,
- cfg->tx_tbl, cfg->tx_tbl_num, 1);
- if (cfg->tx_tbl_sec)
- qcom_qmp_phy_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_configure_lane(qphy->tx2, cfg->regs,
- cfg->tx_tbl, cfg->tx_tbl_num, 2);
- if (cfg->tx_tbl_sec)
- qcom_qmp_phy_configure_lane(qphy->tx2, cfg->regs,
- cfg->tx_tbl_sec,
- cfg->tx_tbl_num_sec, 2);
- }
-
- /* Configure special DP tx tunings */
- if (cfg->type == PHY_TYPE_DP)
- cfg->configure_dp_tx(qphy);
-
- qcom_qmp_phy_configure_lane(rx, cfg->regs,
- cfg->rx_tbl, cfg->rx_tbl_num, 1);
- if (cfg->rx_tbl_sec)
- qcom_qmp_phy_configure_lane(rx, cfg->regs,
- cfg->rx_tbl_sec, cfg->rx_tbl_num_sec, 1);
-
- if (cfg->is_dual_lane_phy) {
- qcom_qmp_phy_configure_lane(qphy->rx2, cfg->regs,
- cfg->rx_tbl, cfg->rx_tbl_num, 2);
- if (cfg->rx_tbl_sec)
- qcom_qmp_phy_configure_lane(qphy->rx2, cfg->regs,
- cfg->rx_tbl_sec,
- cfg->rx_tbl_num_sec, 2);
- }
-
- /* Configure link rate, swing, etc. */
- if (cfg->type == PHY_TYPE_DP) {
- cfg->configure_dp_phy(qphy);
- } else {
- qcom_qmp_phy_configure(pcs, cfg->regs, cfg->pcs_tbl, cfg->pcs_tbl_num);
- if (cfg->pcs_tbl_sec)
- qcom_qmp_phy_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_configure(pcs_misc, cfg->regs, cfg->pcs_misc_tbl,
- cfg->pcs_misc_tbl_num);
- if (cfg->pcs_misc_tbl_sec)
- qcom_qmp_phy_configure(pcs_misc, cfg->regs, cfg->pcs_misc_tbl_sec,
- cfg->pcs_misc_tbl_num_sec);
-
- /*
- * Pull out PHY from POWER DOWN state.
- * This is active low enable signal to power-down PHY.
- */
- if(cfg->type == PHY_TYPE_PCIE)
- qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl);
-
- if (cfg->has_pwrdn_delay)
- usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max);
-
- if (cfg->type != PHY_TYPE_DP) {
- /* Pull PHY out of reset state */
- if (!cfg->no_pcs_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);
-
- if (cfg->type == PHY_TYPE_UFS) {
- status = pcs + cfg->regs[QPHY_PCS_READY_STATUS];
- mask = PCS_READY;
- ready = PCS_READY;
- } else {
- status = pcs + cfg->regs[QPHY_PCS_STATUS];
- mask = cfg->phy_status;
- ready = 0;
- }
-
- ret = readl_poll_timeout(status, val, (val & mask) == ready, 10,
- 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:
- clk_disable_unprepare(qphy->pipe_clk);
-err_reset_lane:
- if (cfg->has_lane_rst)
- reset_control_assert(qphy->lane_rst);
-
- return ret;
-}
-
-static int qcom_qmp_phy_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 */
- if (!cfg->no_pcs_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);
-
- /* Put PHY into POWER DOWN state: active low */
- if (cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL]) {
- qphy_clrbits(qphy->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
- cfg->pwrdn_ctrl);
- } else {
- qphy_clrbits(qphy->pcs, QPHY_POWER_DOWN_CONTROL,
- cfg->pwrdn_ctrl);
- }
- }
-
- return 0;
-}
-
-static int qcom_qmp_phy_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_com_exit(qphy);
-
- return 0;
-}
-
-static int qcom_qmp_phy_enable(struct phy *phy)
-{
- int ret;
-
- ret = qcom_qmp_phy_init(phy);
- if (ret)
- return ret;
-
- ret = qcom_qmp_phy_power_on(phy);
- if (ret)
- qcom_qmp_phy_exit(phy);
-
- return ret;
-}
-
-static int qcom_qmp_phy_disable(struct phy *phy)
-{
- int ret;
-
- ret = qcom_qmp_phy_power_off(phy);
- if (ret)
- return ret;
- return qcom_qmp_phy_exit(phy);
-}
-
-static int qcom_qmp_phy_set_mode(struct phy *phy,
- enum phy_mode mode, int submode)
-{
- struct qmp_phy *qphy = phy_get_drvdata(phy);
-
- qphy->mode = mode;
-
- return 0;
-}
-
-static void qcom_qmp_phy_enable_autonomous_mode(struct qmp_phy *qphy)
-{
- const struct qmp_phy_cfg *cfg = qphy->cfg;
- void __iomem *pcs = qphy->pcs;
- void __iomem *pcs_misc = qphy->pcs_misc;
- u32 intr_mask;
-
- if (qphy->mode == PHY_MODE_USB_HOST_SS ||
- qphy->mode == PHY_MODE_USB_DEVICE_SS)
- intr_mask = ARCVR_DTCT_EN | ALFPS_DTCT_EN;
- else
- intr_mask = ARCVR_DTCT_EN | ARCVR_DTCT_EVENT_SEL;
-
- /* Clear any pending interrupts status */
- qphy_setbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR);
- /* Writing 1 followed by 0 clears the interrupt */
- qphy_clrbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR);
-
- qphy_clrbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL],
- ARCVR_DTCT_EN | ALFPS_DTCT_EN | ARCVR_DTCT_EVENT_SEL);
-
- /* Enable required PHY autonomous mode interrupts */
- qphy_setbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL], intr_mask);
-
- /* Enable i/o clamp_n for autonomous mode */
- if (pcs_misc)
- qphy_clrbits(pcs_misc, QPHY_V3_PCS_MISC_CLAMP_ENABLE, CLAMP_EN);
-}
-
-static void qcom_qmp_phy_disable_autonomous_mode(struct qmp_phy *qphy)
-{
- const struct qmp_phy_cfg *cfg = qphy->cfg;
- void __iomem *pcs = qphy->pcs;
- void __iomem *pcs_misc = qphy->pcs_misc;
-
- /* Disable i/o clamp_n on resume for normal mode */
- if (pcs_misc)
- qphy_setbits(pcs_misc, QPHY_V3_PCS_MISC_CLAMP_ENABLE, CLAMP_EN);
-
- qphy_clrbits(pcs, cfg->regs[QPHY_PCS_AUTONOMOUS_MODE_CTRL],
- ARCVR_DTCT_EN | ARCVR_DTCT_EVENT_SEL | ALFPS_DTCT_EN);
-
- qphy_setbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR);
- /* Writing 1 followed by 0 clears the interrupt */
- qphy_clrbits(pcs, cfg->regs[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR], IRQ_CLEAR);
-}
-
-static int __maybe_unused qcom_qmp_phy_runtime_suspend(struct device *dev)
-{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
- struct qmp_phy *qphy = qmp->phys[0];
- const struct qmp_phy_cfg *cfg = qphy->cfg;
-
- dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qphy->mode);
-
- /* Supported only for USB3 PHY and luckily USB3 is the first phy */
- if (cfg->type != PHY_TYPE_USB3)
- return 0;
-
- if (!qmp->init_count) {
- dev_vdbg(dev, "PHY not initialized, bailing out\n");
- return 0;
- }
-
- qcom_qmp_phy_enable_autonomous_mode(qphy);
-
- clk_disable_unprepare(qphy->pipe_clk);
- clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);
-
- return 0;
-}
-
-static int __maybe_unused qcom_qmp_phy_runtime_resume(struct device *dev)
-{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
- struct qmp_phy *qphy = qmp->phys[0];
- const struct qmp_phy_cfg *cfg = qphy->cfg;
- int ret = 0;
-
- dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qphy->mode);
-
- /* Supported only for USB3 PHY and luckily USB3 is the first phy */
- if (cfg->type != PHY_TYPE_USB3)
- return 0;
-
- if (!qmp->init_count) {
- dev_vdbg(dev, "PHY not initialized, bailing out\n");
- return 0;
- }
-
- ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks);
- if (ret)
- return ret;
-
- ret = clk_prepare_enable(qphy->pipe_clk);
- if (ret) {
- dev_err(dev, "pipe_clk enable failed, err=%d\n", ret);
- clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);
- return ret;
- }
-
- qcom_qmp_phy_disable_autonomous_mode(qphy);
-
- return 0;
-}
-
-static int qcom_qmp_phy_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
-{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
- int num = cfg->num_vregs;
- int i;
-
- qmp->vregs = devm_kcalloc(dev, num, sizeof(*qmp->vregs), GFP_KERNEL);
- if (!qmp->vregs)
- return -ENOMEM;
-
- for (i = 0; i < num; i++)
- qmp->vregs[i].supply = cfg->vreg_list[i];
-
- return devm_regulator_bulk_get(dev, num, qmp->vregs);
-}
-
-static int qcom_qmp_phy_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)
-{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
- int i;
-
- 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];
-
- 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;
- }
-
- return 0;
-}
-
-static int qcom_qmp_phy_clk_init(struct device *dev, const struct qmp_phy_cfg *cfg)
-{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
- int num = cfg->num_clks;
- int i;
-
- qmp->clks = devm_kcalloc(dev, num, sizeof(*qmp->clks), GFP_KERNEL);
- if (!qmp->clks)
- return -ENOMEM;
-
- for (i = 0; i < num; i++)
- qmp->clks[i].id = cfg->clk_list[i];
-
- return devm_clk_bulk_get(dev, num, qmp->clks);
-}
-
-static void phy_clk_release_provider(void *res)
-{
- of_clk_del_provider(res);
-}
-
-/*
- * Register a fixed rate pipe clock.
- *
- * The <s>_pipe_clksrc generated by PHY goes to the GCC that gate
- * controls it. The <s>_pipe_clk coming out of the GCC is requested
- * by the PHY driver for its operations.
- * We register the <s>_pipe_clksrc here. The gcc driver takes care
- * of assigning this <s>_pipe_clksrc as parent to <s>_pipe_clk.
- * Below picture shows this relationship.
- *
- * +---------------+
- * | PHY block |<<---------------------------------------+
- * | | |
- * | +-------+ | +-----+ |
- * I/P---^-->| PLL |---^--->pipe_clksrc--->| GCC |--->pipe_clk---+
- * clk | +-------+ | +-----+
- * +---------------+
- */
-static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
-{
- struct clk_fixed_rate *fixed;
- struct clk_init_data init = { };
- int ret;
-
- ret = of_property_read_string(np, "clock-output-names", &init.name);
- if (ret) {
- dev_err(qmp->dev, "%pOFn: No clock-output-names\n", np);
- return ret;
- }
-
- fixed = devm_kzalloc(qmp->dev, sizeof(*fixed), GFP_KERNEL);
- if (!fixed)
- return -ENOMEM;
-
- init.ops = &clk_fixed_rate_ops;
-
- /* controllers using QMP phys use 125MHz pipe clock interface */
- fixed->fixed_rate = 125000000;
- fixed->hw.init = &init;
-
- ret = devm_clk_hw_register(qmp->dev, &fixed->hw);
- if (ret)
- return ret;
-
- ret = of_clk_add_hw_provider(np, of_clk_hw_simple_get, &fixed->hw);
- if (ret)
- return ret;
-
- /*
- * Roll a devm action because the clock provider is the child node, but
- * the child node is not actually a device.
- */
- return devm_add_action_or_reset(qmp->dev, phy_clk_release_provider, np);
-}
-
-/*
- * Display Port PLL driver block diagram for branch clocks
- *
- * +------------------------------+
- * | DP_VCO_CLK |
- * | |
- * | +-------------------+ |
- * | | (DP PLL/VCO) | |
- * | +---------+---------+ |
- * | v |
- * | +----------+-----------+ |
- * | | hsclk_divsel_clk_src | |
- * | +----------+-----------+ |
- * +------------------------------+
- * |
- * +---------<---------v------------>----------+
- * | |
- * +--------v----------------+ |
- * | dp_phy_pll_link_clk | |
- * | link_clk | |
- * +--------+----------------+ |
- * | |
- * | |
- * v v
- * Input to DISPCC block |
- * for link clk, crypto clk |
- * and interface clock |
- * |
- * |
- * +--------<------------+-----------------+---<---+
- * | | |
- * +----v---------+ +--------v-----+ +--------v------+
- * | vco_divided | | vco_divided | | vco_divided |
- * | _clk_src | | _clk_src | | _clk_src |
- * | | | | | |
- * |divsel_six | | divsel_two | | divsel_four |
- * +-------+------+ +-----+--------+ +--------+------+
- * | | |
- * v---->----------v-------------<------v
- * |
- * +----------+-----------------+
- * | dp_phy_pll_vco_div_clk |
- * +---------+------------------+
- * |
- * v
- * Input to DISPCC block
- * for DP pixel clock
- *
- */
-static int qcom_qmp_dp_pixel_clk_determine_rate(struct clk_hw *hw,
- struct clk_rate_request *req)
-{
- switch (req->rate) {
- case 1620000000UL / 2:
- case 2700000000UL / 2:
- /* 5.4 and 8.1 GHz are same link rate as 2.7GHz, i.e. div 4 and div 6 */
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-static unsigned long
-qcom_qmp_dp_pixel_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
-{
- const struct qmp_phy_dp_clks *dp_clks;
- const struct qmp_phy *qphy;
- const struct phy_configure_opts_dp *dp_opts;
-
- dp_clks = container_of(hw, struct qmp_phy_dp_clks, dp_pixel_hw);
- qphy = dp_clks->qphy;
- dp_opts = &qphy->dp_opts;
-
- switch (dp_opts->link_rate) {
- case 1620:
- return 1620000000UL / 2;
- case 2700:
- return 2700000000UL / 2;
- case 5400:
- return 5400000000UL / 4;
- case 8100:
- return 8100000000UL / 6;
- default:
- return 0;
- }
-}
-
-static const struct clk_ops qcom_qmp_dp_pixel_clk_ops = {
- .determine_rate = qcom_qmp_dp_pixel_clk_determine_rate,
- .recalc_rate = qcom_qmp_dp_pixel_clk_recalc_rate,
-};
-
-static int qcom_qmp_dp_link_clk_determine_rate(struct clk_hw *hw,
- struct clk_rate_request *req)
-{
- switch (req->rate) {
- case 162000000:
- case 270000000:
- case 540000000:
- case 810000000:
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-static unsigned long
-qcom_qmp_dp_link_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
-{
- const struct qmp_phy_dp_clks *dp_clks;
- const struct qmp_phy *qphy;
- const struct phy_configure_opts_dp *dp_opts;
-
- dp_clks = container_of(hw, struct qmp_phy_dp_clks, dp_link_hw);
- qphy = dp_clks->qphy;
- dp_opts = &qphy->dp_opts;
-
- switch (dp_opts->link_rate) {
- case 1620:
- case 2700:
- case 5400:
- case 8100:
- return dp_opts->link_rate * 100000;
- default:
- return 0;
- }
-}
-
-static const struct clk_ops qcom_qmp_dp_link_clk_ops = {
- .determine_rate = qcom_qmp_dp_link_clk_determine_rate,
- .recalc_rate = qcom_qmp_dp_link_clk_recalc_rate,
-};
-
-static struct clk_hw *
-qcom_qmp_dp_clks_hw_get(struct of_phandle_args *clkspec, void *data)
-{
- struct qmp_phy_dp_clks *dp_clks = data;
- unsigned int idx = clkspec->args[0];
-
- if (idx >= 2) {
- pr_err("%s: invalid index %u\n", __func__, idx);
- return ERR_PTR(-EINVAL);
- }
-
- if (idx == 0)
- return &dp_clks->dp_link_hw;
-
- return &dp_clks->dp_pixel_hw;
-}
-
-static int phy_dp_clks_register(struct qcom_qmp *qmp, struct qmp_phy *qphy,
- struct device_node *np)
-{
- struct clk_init_data init = { };
- struct qmp_phy_dp_clks *dp_clks;
- char name[64];
- int ret;
-
- dp_clks = devm_kzalloc(qmp->dev, sizeof(*dp_clks), GFP_KERNEL);
- if (!dp_clks)
- return -ENOMEM;
-
- dp_clks->qphy = qphy;
- qphy->dp_clks = dp_clks;
-
- snprintf(name, sizeof(name), "%s::link_clk", dev_name(qmp->dev));
- init.ops = &qcom_qmp_dp_link_clk_ops;
- init.name = name;
- dp_clks->dp_link_hw.init = &init;
- ret = devm_clk_hw_register(qmp->dev, &dp_clks->dp_link_hw);
- if (ret)
- return ret;
-
- snprintf(name, sizeof(name), "%s::vco_div_clk", dev_name(qmp->dev));
- init.ops = &qcom_qmp_dp_pixel_clk_ops;
- init.name = name;
- dp_clks->dp_pixel_hw.init = &init;
- ret = devm_clk_hw_register(qmp->dev, &dp_clks->dp_pixel_hw);
- if (ret)
- return ret;
-
- ret = of_clk_add_hw_provider(np, qcom_qmp_dp_clks_hw_get, dp_clks);
- if (ret)
- return ret;
-
- /*
- * Roll a devm action because the clock provider is the child node, but
- * the child node is not actually a device.
- */
- return devm_add_action_or_reset(qmp->dev, phy_clk_release_provider, np);
-}
-
-static const struct phy_ops qcom_qmp_phy_gen_ops = {
- .init = qcom_qmp_phy_enable,
- .exit = qcom_qmp_phy_disable,
- .set_mode = qcom_qmp_phy_set_mode,
- .owner = THIS_MODULE,
-};
-
-static const struct phy_ops qcom_qmp_phy_dp_ops = {
- .init = qcom_qmp_phy_init,
- .configure = qcom_qmp_dp_phy_configure,
- .power_on = qcom_qmp_phy_power_on,
- .calibrate = qcom_qmp_dp_phy_calibrate,
- .power_off = qcom_qmp_phy_power_off,
- .exit = qcom_qmp_phy_exit,
- .set_mode = qcom_qmp_phy_set_mode,
- .owner = THIS_MODULE,
-};
-
-static const struct phy_ops qcom_qmp_pcie_ufs_ops = {
- .power_on = qcom_qmp_phy_enable,
- .power_off = qcom_qmp_phy_disable,
- .set_mode = qcom_qmp_phy_set_mode,
- .owner = THIS_MODULE,
-};
-
-static void qcom_qmp_reset_control_put(void *data)
-{
- reset_control_put(data);
-}
-
-static
-int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id,
- void __iomem *serdes, const struct qmp_phy_cfg *cfg)
-{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
- struct phy *generic_phy;
- struct qmp_phy *qphy;
- const struct phy_ops *ops;
- char prop_name[MAX_PROP_NAME];
- int ret;
-
- qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL);
- if (!qphy)
- return -ENOMEM;
-
- qphy->cfg = cfg;
- qphy->serdes = serdes;
- /*
- * Get memory resources for each phy lane:
- * 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 = of_iomap(np, 0);
- if (!qphy->tx)
- return -ENOMEM;
-
- qphy->rx = of_iomap(np, 1);
- if (!qphy->rx)
- return -ENOMEM;
-
- qphy->pcs = of_iomap(np, 2);
- if (!qphy->pcs)
- return -ENOMEM;
-
- /*
- * If this is a dual-lane PHY, then there should be registers for the
- * second lane. Some old device trees did not specify this, so fall
- * back to old legacy behavior of assuming they can be reached at an
- * offset from the first lane.
- */
- if (cfg->is_dual_lane_phy) {
- qphy->tx2 = of_iomap(np, 3);
- qphy->rx2 = of_iomap(np, 4);
- if (!qphy->tx2 || !qphy->rx2) {
- dev_warn(dev,
- "Underspecified device tree, falling back to legacy register regions\n");
-
- /* In the old version, pcs_misc is at index 3. */
- qphy->pcs_misc = qphy->tx2;
- qphy->tx2 = qphy->tx + QMP_PHY_LEGACY_LANE_STRIDE;
- qphy->rx2 = qphy->rx + QMP_PHY_LEGACY_LANE_STRIDE;
-
- } else {
- qphy->pcs_misc = of_iomap(np, 5);
- }
-
- } else {
- qphy->pcs_misc = of_iomap(np, 3);
- }
-
- if (!qphy->pcs_misc)
- dev_vdbg(dev, "PHY pcs_misc-reg not used\n");
-
- /*
- * Get PHY's Pipe clock, if any. USB3 and PCIe are PIPE3
- * based phys, so they essentially have pipe clock. So,
- * we return error in case phy is USB3 or PIPE type.
- * Otherwise, we initialize pipe clock to NULL for
- * all phys that don't need this.
- */
- snprintf(prop_name, sizeof(prop_name), "pipe%d", id);
- qphy->pipe_clk = devm_get_clk_from_child(dev, np, prop_name);
- if (IS_ERR(qphy->pipe_clk)) {
- if (cfg->type == PHY_TYPE_PCIE ||
- cfg->type == PHY_TYPE_USB3) {
- ret = PTR_ERR(qphy->pipe_clk);
- if (ret != -EPROBE_DEFER)
- dev_err(dev,
- "failed to get lane%d pipe_clk, %d\n",
- id, ret);
- return ret;
- }
- qphy->pipe_clk = NULL;
- }
-
- /* 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;
- }
-
- if (cfg->type == PHY_TYPE_UFS || cfg->type == PHY_TYPE_PCIE)
- ops = &qcom_qmp_pcie_ufs_ops;
- else if (cfg->type == PHY_TYPE_DP)
- ops = &qcom_qmp_phy_dp_ops;
- else
- ops = &qcom_qmp_phy_gen_ops;
-
- generic_phy = devm_phy_create(dev, np, ops);
- if (IS_ERR(generic_phy)) {
- ret = PTR_ERR(generic_phy);
- dev_err(dev, "failed to create qphy %d\n", ret);
- return ret;
- }
-
- qphy->phy = generic_phy;
- qphy->index = id;
- qphy->qmp = qmp;
- qmp->phys[id] = qphy;
- phy_set_drvdata(generic_phy, qphy);
-
- return 0;
-}
-
-static const struct of_device_id qcom_qmp_phy_of_match_table[] = {
- { },
-};
-MODULE_DEVICE_TABLE(of, qcom_qmp_phy_of_match_table);
-
-static const struct of_device_id qcom_qmp_combo_phy_of_match_table[] = {
- { }
-};
-
-static const struct dev_pm_ops qcom_qmp_phy_pm_ops = {
- SET_RUNTIME_PM_OPS(qcom_qmp_phy_runtime_suspend,
- qcom_qmp_phy_runtime_resume, NULL)
-};
-
-static int qcom_qmp_phy_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;
- void __iomem *usb_serdes;
- void __iomem *dp_serdes = NULL;
- const struct qmp_phy_combo_cfg *combo_cfg = NULL;
- const struct qmp_phy_cfg *cfg = NULL;
- const struct qmp_phy_cfg *usb_cfg = NULL;
- const struct qmp_phy_cfg *dp_cfg = NULL;
- int num, id, expected_phys;
- int ret;
-
- qmp = devm_kzalloc(dev, sizeof(*qmp), GFP_KERNEL);
- if (!qmp)
- return -ENOMEM;
-
- qmp->dev = dev;
- dev_set_drvdata(dev, qmp);
-
- /* Get the specific init parameters of QMP phy */
- cfg = of_device_get_match_data(dev);
- if (!cfg) {
- const struct of_device_id *match;
-
- match = of_match_device(qcom_qmp_combo_phy_of_match_table, dev);
- if (!match)
- return -EINVAL;
-
- combo_cfg = match->data;
- if (!combo_cfg)
- return -EINVAL;
-
- usb_cfg = combo_cfg->usb_cfg;
- cfg = usb_cfg; /* Setup clks and regulators */
- }
-
- /* per PHY serdes; usually located at base address */
- usb_serdes = serdes = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(serdes))
- return PTR_ERR(serdes);
-
- /* per PHY dp_com; if PHY has dp_com control block */
- if (combo_cfg || cfg->has_phy_dp_com_ctrl) {
- qmp->dp_com = devm_platform_ioremap_resource(pdev, 1);
- if (IS_ERR(qmp->dp_com))
- return PTR_ERR(qmp->dp_com);
- }
-
- if (combo_cfg) {
- /* Only two serdes for combo PHY */
- dp_serdes = devm_platform_ioremap_resource(pdev, 2);
- if (IS_ERR(dp_serdes))
- return PTR_ERR(dp_serdes);
-
- dp_cfg = combo_cfg->dp_cfg;
- expected_phys = 2;
- } else {
- expected_phys = cfg->nlanes;
- }
-
- mutex_init(&qmp->phy_mutex);
-
- ret = qcom_qmp_phy_clk_init(dev, cfg);
- if (ret)
- return ret;
-
- ret = qcom_qmp_phy_reset_init(dev, cfg);
- if (ret)
- return ret;
-
- ret = qcom_qmp_phy_vreg_init(dev, cfg);
- if (ret) {
- if (ret != -EPROBE_DEFER)
- dev_err(dev, "failed to get regulator supplies: %d\n",
- ret);
- return ret;
- }
-
- num = of_get_available_child_count(dev->of_node);
- /* do we have a rogue child node ? */
- if (num > expected_phys)
- return -EINVAL;
-
- qmp->phys = devm_kcalloc(dev, num, sizeof(*qmp->phys), GFP_KERNEL);
- if (!qmp->phys)
- return -ENOMEM;
-
- pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
- /*
- * Prevent runtime pm from being ON by default. Users can enable
- * it using power/control in sysfs.
- */
- pm_runtime_forbid(dev);
-
- id = 0;
- for_each_available_child_of_node(dev->of_node, child) {
- if (of_node_name_eq(child, "dp-phy")) {
- cfg = dp_cfg;
- serdes = dp_serdes;
- } else if (of_node_name_eq(child, "usb3-phy")) {
- cfg = usb_cfg;
- serdes = usb_serdes;
- }
-
- /* Create per-lane phy */
- ret = qcom_qmp_phy_create(dev, child, id, serdes, cfg);
- if (ret) {
- dev_err(dev, "failed to create lane%d phy, %d\n",
- id, ret);
- goto err_node_put;
- }
-
- /*
- * Register the pipe clock provided by phy.
- * See function description to see details of this pipe clock.
- */
- if (cfg->type == PHY_TYPE_USB3 || cfg->type == PHY_TYPE_PCIE) {
- ret = phy_pipe_clk_register(qmp, child);
- if (ret) {
- dev_err(qmp->dev,
- "failed to register pipe clock source\n");
- goto err_node_put;
- }
- } else if (cfg->type == PHY_TYPE_DP) {
- ret = phy_dp_clks_register(qmp, qmp->phys[id], child);
- if (ret) {
- dev_err(qmp->dev,
- "failed to register DP clock source\n");
- goto err_node_put;
- }
- }
- id++;
- }
-
- phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
- if (!IS_ERR(phy_provider))
- dev_info(dev, "Registered Qcom-QMP phy\n");
- else
- pm_runtime_disable(dev);
-
- return PTR_ERR_OR_ZERO(phy_provider);
-
-err_node_put:
- pm_runtime_disable(dev);
- of_node_put(child);
- return ret;
-}
-
-static struct platform_driver qcom_qmp_phy_driver = {
- .probe = qcom_qmp_phy_probe,
- .driver = {
- .name = "qcom-qmp-phy",
- .pm = &qcom_qmp_phy_pm_ops,
- .of_match_table = qcom_qmp_phy_of_match_table,
- },
-};
-
-module_platform_driver(qcom_qmp_phy_driver);
-
-MODULE_AUTHOR("Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx>");
-MODULE_DESCRIPTION("Qualcomm QMP PHY driver");
-MODULE_LICENSE("GPL v2");
--
2.35.1
