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719655a149
This is one step in allowing phylib to make use of link_mode bitmaps, instead of u32 for supported and advertised features. Convert the phy drivers to use bitmaps to indicates the features they support. Build bitmap equivalents of the u32 values at runtime, and have the drivers point to the appropriate bitmap. These bitmaps are shared, and we don't want a driver to modify them. So mark them __ro_after_init. Within phylib, the features bitmap is currently turned back into a u32. This will be removed once the whole of phylib, and the drivers are converted to use bitmaps. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2018 Microchip Technology
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mii.h>
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#include <linux/phy.h>
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/* Interrupt Source Register */
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#define LAN87XX_INTERRUPT_SOURCE (0x18)
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/* Interrupt Mask Register */
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#define LAN87XX_INTERRUPT_MASK (0x19)
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#define LAN87XX_MASK_LINK_UP (0x0004)
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#define LAN87XX_MASK_LINK_DOWN (0x0002)
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#define DRIVER_AUTHOR "Nisar Sayed <nisar.sayed@microchip.com>"
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#define DRIVER_DESC "Microchip LAN87XX T1 PHY driver"
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static int lan87xx_phy_config_intr(struct phy_device *phydev)
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{
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int rc, val = 0;
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
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/* unmask all source and clear them before enable */
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rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, 0x7FFF);
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rc = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE);
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val = LAN87XX_MASK_LINK_UP | LAN87XX_MASK_LINK_DOWN;
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}
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rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, val);
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return rc < 0 ? rc : 0;
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}
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static int lan87xx_phy_ack_interrupt(struct phy_device *phydev)
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{
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int rc = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE);
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return rc < 0 ? rc : 0;
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}
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static struct phy_driver microchip_t1_phy_driver[] = {
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{
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.phy_id = 0x0007c150,
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.phy_id_mask = 0xfffffff0,
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.name = "Microchip LAN87xx T1",
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.features = PHY_BASIC_T1_FEATURES,
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.flags = PHY_HAS_INTERRUPT,
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.config_init = genphy_config_init,
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.config_aneg = genphy_config_aneg,
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.ack_interrupt = lan87xx_phy_ack_interrupt,
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.config_intr = lan87xx_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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}
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};
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module_phy_driver(microchip_t1_phy_driver);
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static struct mdio_device_id __maybe_unused microchip_t1_tbl[] = {
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{ 0x0007c150, 0xfffffff0 },
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{ }
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};
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MODULE_DEVICE_TABLE(mdio, microchip_t1_tbl);
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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