drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2015 - 2023 Beijing WangXun Technology Co., Ltd. */
   3
   4 #include <linux/gpio/property.h>
   5 #include <linux/i2c.h>
   6 #include <linux/pci.h>
   7
   8 #include "../libwx/wx_type.h"
   9 #include "txgbe_type.h"
  10 #include "txgbe_phy.h"
  11
  12 static int txgbe_swnodes_register(struct txgbe *txgbe)
  13 {
  14         struct txgbe_nodes *nodes = &txgbe->nodes;
  15         struct pci_dev *pdev = txgbe->wx->pdev;
  16         struct software_node *swnodes;
  17         u32 id;
  18
  19         id = (pdev->bus->number << 8) | pdev->devfn;
  20
  21         snprintf(nodes->gpio_name, sizeof(nodes->gpio_name), "txgbe_gpio-%x", id);
  22         snprintf(nodes->i2c_name, sizeof(nodes->i2c_name), "txgbe_i2c-%x", id);
  23         snprintf(nodes->sfp_name, sizeof(nodes->sfp_name), "txgbe_sfp-%x", id);
  24         snprintf(nodes->phylink_name, sizeof(nodes->phylink_name), "txgbe_phylink-%x", id);
  25
  26         swnodes = nodes->swnodes;
  27
  28         /* GPIO 0: tx fault
  29          * GPIO 1: tx disable
  30          * GPIO 2: sfp module absent
  31          * GPIO 3: rx signal lost
  32          * GPIO 4: rate select, 1G(0) 10G(1)
  33          * GPIO 5: rate select, 1G(0) 10G(1)
  34          */
  35         nodes->gpio_props[0] = PROPERTY_ENTRY_STRING("pinctrl-names", "default");
  36         swnodes[SWNODE_GPIO] = NODE_PROP(nodes->gpio_name, nodes->gpio_props);
  37         nodes->gpio0_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 0, GPIO_ACTIVE_HIGH);
  38         nodes->gpio1_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 1, GPIO_ACTIVE_HIGH);
  39         nodes->gpio2_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 2, GPIO_ACTIVE_LOW);
  40         nodes->gpio3_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 3, GPIO_ACTIVE_HIGH);
  41         nodes->gpio4_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 4, GPIO_ACTIVE_HIGH);
  42         nodes->gpio5_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 5, GPIO_ACTIVE_HIGH);
  43
  44         nodes->i2c_props[0] = PROPERTY_ENTRY_STRING("compatible", "snps,designware-i2c");
  45         nodes->i2c_props[1] = PROPERTY_ENTRY_BOOL("wx,i2c-snps-model");
  46         nodes->i2c_props[2] = PROPERTY_ENTRY_U32("clock-frequency", I2C_MAX_STANDARD_MODE_FREQ);
  47         swnodes[SWNODE_I2C] = NODE_PROP(nodes->i2c_name, nodes->i2c_props);
  48         nodes->i2c_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_I2C]);
  49
  50         nodes->sfp_props[0] = PROPERTY_ENTRY_STRING("compatible", "sff,sfp");
  51         nodes->sfp_props[1] = PROPERTY_ENTRY_REF_ARRAY("i2c-bus", nodes->i2c_ref);
  52         nodes->sfp_props[2] = PROPERTY_ENTRY_REF_ARRAY("tx-fault-gpios", nodes->gpio0_ref);
  53         nodes->sfp_props[3] = PROPERTY_ENTRY_REF_ARRAY("tx-disable-gpios", nodes->gpio1_ref);
  54         nodes->sfp_props[4] = PROPERTY_ENTRY_REF_ARRAY("mod-def0-gpios", nodes->gpio2_ref);
  55         nodes->sfp_props[5] = PROPERTY_ENTRY_REF_ARRAY("los-gpios", nodes->gpio3_ref);
  56         nodes->sfp_props[6] = PROPERTY_ENTRY_REF_ARRAY("rate-select1-gpios", nodes->gpio4_ref);
  57         nodes->sfp_props[7] = PROPERTY_ENTRY_REF_ARRAY("rate-select0-gpios", nodes->gpio5_ref);
  58         swnodes[SWNODE_SFP] = NODE_PROP(nodes->sfp_name, nodes->sfp_props);
  59         nodes->sfp_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_SFP]);
  60
  61         nodes->phylink_props[0] = PROPERTY_ENTRY_STRING("managed", "in-band-status");
  62         nodes->phylink_props[1] = PROPERTY_ENTRY_REF_ARRAY("sfp", nodes->sfp_ref);
  63         swnodes[SWNODE_PHYLINK] = NODE_PROP(nodes->phylink_name, nodes->phylink_props);
  64
  65         nodes->group[SWNODE_GPIO] = &swnodes[SWNODE_GPIO];
  66         nodes->group[SWNODE_I2C] = &swnodes[SWNODE_I2C];
  67         nodes->group[SWNODE_SFP] = &swnodes[SWNODE_SFP];
  68         nodes->group[SWNODE_PHYLINK] = &swnodes[SWNODE_PHYLINK];
  69
  70         return software_node_register_node_group(nodes->group);
  71 }
  72
  73 int txgbe_init_phy(struct txgbe *txgbe)
  74 {
  75         int ret;
  76
  77         ret = txgbe_swnodes_register(txgbe);
  78         if (ret) {
  79                 wx_err(txgbe->wx, "failed to register software nodes\n");
  80                 return ret;
  81         }
  82
  83         return 0;
  84 }
  85
  86 void txgbe_remove_phy(struct txgbe *txgbe)
  87 {
  88         software_node_unregister_node_group(txgbe->nodes.group);
  89 }