drivers/power/pmic/axp.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2
   3 #include <axp_pmic.h>
   4 #include <dm.h>
   5 #include <dm/lists.h>
   6 #include <i2c.h>
   7 #include <power/pmic.h>
   8 #include <sysreset.h>
   9
  10 #if CONFIG_IS_ENABLED(SYSRESET)
  11 static int axp_sysreset_request(struct udevice *dev, enum sysreset_t type)
  12 {
  13         int ret;
  14
  15         if (type != SYSRESET_POWER_OFF)
  16                 return -EPROTONOSUPPORT;
  17
  18         ret = pmic_clrsetbits(dev->parent, AXP152_SHUTDOWN, 0, AXP152_POWEROFF);
  19         if (ret < 0)
  20                 return ret;
  21
  22         return -EINPROGRESS;
  23 }
  24
  25 static struct sysreset_ops axp_sysreset_ops = {
  26         .request        = axp_sysreset_request,
  27 };
  28
  29 U_BOOT_DRIVER(axp_sysreset) = {
  30         .name           = "axp_sysreset",
  31         .id             = UCLASS_SYSRESET,
  32         .ops            = &axp_sysreset_ops,
  33 };
  34 #endif
  35
  36 static int axp_pmic_reg_count(struct udevice *dev)
  37 {
  38         /* TODO: Get the specific value from driver data. */
  39         return 0x100;
  40 }
  41
  42 static struct dm_pmic_ops axp_pmic_ops = {
  43         .reg_count      = axp_pmic_reg_count,
  44         .read           = dm_i2c_read,
  45         .write          = dm_i2c_write,
  46 };
  47
  48 static int axp_pmic_bind(struct udevice *dev)
  49 {
  50         int ret;
  51
  52         ret = dm_scan_fdt_dev(dev);
  53         if (ret)
  54                 return ret;
  55
  56         if (CONFIG_IS_ENABLED(SYSRESET)) {
  57                 ret = device_bind_driver_to_node(dev, "axp_sysreset", "axp_sysreset",
  58                                                  dev_ofnode(dev), NULL);
  59                 if (ret)
  60                         return ret;
  61         }
  62
  63         return 0;
  64 }
  65
  66 static const struct udevice_id axp_pmic_ids[] = {
  67         { .compatible = "x-powers,axp152" },
  68         { .compatible = "x-powers,axp202" },
  69         { .compatible = "x-powers,axp209" },
  70         { .compatible = "x-powers,axp221" },
  71         { .compatible = "x-powers,axp223" },
  72         { .compatible = "x-powers,axp803" },
  73         { .compatible = "x-powers,axp806" },
  74         { .compatible = "x-powers,axp809" },
  75         { .compatible = "x-powers,axp813" },
  76         { }
  77 };
  78
  79 U_BOOT_DRIVER(axp_pmic) = {
  80         .name           = "axp_pmic",
  81         .id             = UCLASS_PMIC,
  82         .of_match       = axp_pmic_ids,
  83         .bind           = axp_pmic_bind,
  84         .ops            = &axp_pmic_ops,
  85 };