projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 34e45ad9 AD |
1 | /* |
| 2 | * Driver for the Texas Instruments DP83848 PHY | |
| 3 | * | |
| 4 | * Copyright (C) 2015 Texas Instruments Inc. | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License as published by | |
| 8 | * the Free Software Foundation; either version 2 of the License. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/module.h> | |
| 17 | #include <linux/phy.h> | |
| 18 | ||
| 19 | #define DP83848_PHY_ID 0x20005c90 | |
| 20 | ||
| 21 | /* Registers */ | |
| 22 | #define DP83848_MICR 0x11 | |
| 23 | #define DP83848_MISR 0x12 | |
| 24 | ||
| 25 | /* MICR Register Fields */ | |
| 26 | #define DP83848_MICR_INT_OE BIT(0) /* Interrupt Output Enable */ | |
| 27 | #define DP83848_MICR_INTEN BIT(1) /* Interrupt Enable */ | |
| 28 | ||
| 29 | /* MISR Register Fields */ | |
| 30 | #define DP83848_MISR_RHF_INT_EN BIT(0) /* Receive Error Counter */ | |
| 31 | #define DP83848_MISR_FHF_INT_EN BIT(1) /* False Carrier Counter */ | |
| 32 | #define DP83848_MISR_ANC_INT_EN BIT(2) /* Auto-negotiation complete */ | |
| 33 | #define DP83848_MISR_DUP_INT_EN BIT(3) /* Duplex Status */ | |
| 34 | #define DP83848_MISR_SPD_INT_EN BIT(4) /* Speed status */ | |
| 35 | #define DP83848_MISR_LINK_INT_EN BIT(5) /* Link status */ | |
| 36 | #define DP83848_MISR_ED_INT_EN BIT(6) /* Energy detect */ | |
| 37 | #define DP83848_MISR_LQM_INT_EN BIT(7) /* Link Quality Monitor */ | |
| 38 | ||
| 39 | static int dp83848_ack_interrupt(struct phy_device *phydev) | |
| 40 | { | |
| 41 | int err = phy_read(phydev, DP83848_MISR); | |
| 42 | ||
| 43 | return err < 0 ? err : 0; | |
| 44 | } | |
| 45 | ||
| 46 | static int dp83848_config_intr(struct phy_device *phydev) | |
| 47 | { | |
| 48 | int err; | |
| 49 | ||
| 50 | if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { | |
| 51 | err = phy_write(phydev, DP83848_MICR, | |
| 52 | DP83848_MICR_INT_OE | | |
| 53 | DP83848_MICR_INTEN); | |
| 54 | if (err < 0) | |
| 55 | return err; | |
| 56 | ||
| 57 | return phy_write(phydev, DP83848_MISR, | |
| 58 | DP83848_MISR_ANC_INT_EN | | |
| 59 | DP83848_MISR_DUP_INT_EN | | |
| 60 | DP83848_MISR_SPD_INT_EN | | |
| 61 | DP83848_MISR_LINK_INT_EN); | |
| 62 | } | |
| 63 | ||
| 64 | return phy_write(phydev, DP83848_MICR, 0x0); | |
| 65 | } | |
| 66 | ||
| 67 | static struct mdio_device_id __maybe_unused dp83848_tbl[] = { | |
| 68 | { DP83848_PHY_ID, 0xfffffff0 }, | |
| 69 | { } | |
| 70 | }; | |
| 71 | MODULE_DEVICE_TABLE(mdio, dp83848_tbl); | |
| 72 | ||
| 73 | static struct phy_driver dp83848_driver[] = { | |
| 74 | { | |
| 75 | .phy_id = DP83848_PHY_ID, | |
| 76 | .phy_id_mask = 0xfffffff0, | |
| 77 | .name = "TI DP83848", | |
| 78 | .features = PHY_BASIC_FEATURES, | |
| 79 | .flags = PHY_HAS_INTERRUPT, | |
| 80 | ||
| 81 | .soft_reset = genphy_soft_reset, | |
| 82 | .config_init = genphy_config_init, | |
| 83 | .suspend = genphy_suspend, | |
| 84 | .resume = genphy_resume, | |
| 85 | .config_aneg = genphy_config_aneg, | |
| 86 | .read_status = genphy_read_status, | |
| 87 | ||
| 88 | /* IRQ related */ | |
| 89 | .ack_interrupt = dp83848_ack_interrupt, | |
| 90 | .config_intr = dp83848_config_intr, | |
| 34e45ad9 AD |
91 | }, |
| 92 | }; | |
| 93 | module_phy_driver(dp83848_driver); | |
| 94 | ||
| 95 | MODULE_DESCRIPTION("Texas Instruments DP83848 PHY driver"); | |
| 96 | MODULE_AUTHOR("Andrew F. Davis <afd@ti.com"); | |
| 97 | MODULE_LICENSE("GPL"); |