drivers/phy/qualcomm/phy-qcom-qmp-common.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (c) 2017, The Linux Foundation. All rights reserved.
   4  */
   5
   6 #ifndef QCOM_PHY_QMP_COMMON_H_
   7 #define QCOM_PHY_QMP_COMMON_H_
   8
   9 struct qmp_phy_init_tbl {
  10         unsigned int offset;
  11         unsigned int val;
  12         char *name;
  13         /*
  14          * mask of lanes for which this register is written
  15          * for cases when second lane needs different values
  16          */
  17         u8 lane_mask;
  18 };
  19
  20 #define QMP_PHY_INIT_CFG(o, v)          \
  21         {                               \
  22                 .offset = o,            \
  23                 .val = v,               \
  24                 .name = #o,             \
  25                 .lane_mask = 0xff,      \
  26         }
  27
  28 #define QMP_PHY_INIT_CFG_LANE(o, v, l)  \
  29         {                               \
  30                 .offset = o,            \
  31                 .val = v,               \
  32                 .name = #o,             \
  33                 .lane_mask = l,         \
  34         }
  35
  36 static inline void qmp_configure_lane(struct device *dev, void __iomem *base,
  37                                       const struct qmp_phy_init_tbl tbl[],
  38                                       int num, u8 lane_mask)
  39 {
  40         int i;
  41         const struct qmp_phy_init_tbl *t = tbl;
  42
  43         if (!t)
  44                 return;
  45
  46         for (i = 0; i < num; i++, t++) {
  47                 if (!(t->lane_mask & lane_mask))
  48                         continue;
  49
  50                 dev_dbg(dev, "Writing Reg: %s Offset: 0x%04x Val: 0x%02x\n",
  51                         t->name, t->offset, t->val);
  52                 writel(t->val, base + t->offset);
  53         }
  54 }
  55
  56 static inline void qmp_configure(struct device *dev, void __iomem *base,
  57                                  const struct qmp_phy_init_tbl tbl[], int num)
  58 {
  59         qmp_configure_lane(dev, base, tbl, num, 0xff);
  60 }
  61
  62 #endif