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b01b59a4fa
'struct mdio_device_id' is not modified in these drivers. Constifying these structures moves some data to a read-only section, so increase overall security. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 27014 12792 0 39806 9b7e drivers/net/phy/broadcom.o After: ===== text data bss dec hex filename 27206 12600 0 39806 9b7e drivers/net/phy/broadcom.o Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/403c381b7d9156b67ad68ffc44b8eee70c5e86a9.1736691226.git.christophe.jaillet@wanadoo.fr Signed-off-by: Jakub Kicinski <kuba@kernel.org>
107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include <linux/bitfield.h>
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#include <linux/module.h>
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#include <linux/phy.h>
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#include "mtk.h"
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#define MTK_GPHY_ID_MT7530 0x03a29412
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#define MTK_GPHY_ID_MT7531 0x03a29441
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#define MTK_EXT_PAGE_ACCESS 0x1f
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#define MTK_PHY_PAGE_STANDARD 0x0000
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#define MTK_PHY_PAGE_EXTENDED 0x0001
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#define MTK_PHY_PAGE_EXTENDED_2 0x0002
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#define MTK_PHY_PAGE_EXTENDED_3 0x0003
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#define MTK_PHY_PAGE_EXTENDED_2A30 0x2a30
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#define MTK_PHY_PAGE_EXTENDED_52B5 0x52b5
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static void mtk_gephy_config_init(struct phy_device *phydev)
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{
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/* Enable HW auto downshift */
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phy_modify_paged(phydev, MTK_PHY_PAGE_EXTENDED, 0x14, 0, BIT(4));
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/* Increase SlvDPSready time */
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phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
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__phy_write(phydev, 0x10, 0xafae);
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__phy_write(phydev, 0x12, 0x2f);
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__phy_write(phydev, 0x10, 0x8fae);
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phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
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/* Adjust 100_mse_threshold */
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phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x123, 0xffff);
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/* Disable mcc */
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phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xa6, 0x300);
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}
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static int mt7530_phy_config_init(struct phy_device *phydev)
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{
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mtk_gephy_config_init(phydev);
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/* Increase post_update_timer */
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phy_write_paged(phydev, MTK_PHY_PAGE_EXTENDED_3, 0x11, 0x4b);
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return 0;
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}
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static int mt7531_phy_config_init(struct phy_device *phydev)
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{
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mtk_gephy_config_init(phydev);
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/* PHY link down power saving enable */
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phy_set_bits(phydev, 0x17, BIT(4));
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phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, 0xc6, 0x300);
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/* Set TX Pair delay selection */
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phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x13, 0x404);
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phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x14, 0x404);
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return 0;
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}
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static struct phy_driver mtk_gephy_driver[] = {
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{
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PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7530),
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.name = "MediaTek MT7530 PHY",
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.config_init = mt7530_phy_config_init,
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/* Interrupts are handled by the switch, not the PHY
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* itself.
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*/
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.config_intr = genphy_no_config_intr,
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.handle_interrupt = genphy_handle_interrupt_no_ack,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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.read_page = mtk_phy_read_page,
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.write_page = mtk_phy_write_page,
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},
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{
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PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7531),
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.name = "MediaTek MT7531 PHY",
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.config_init = mt7531_phy_config_init,
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/* Interrupts are handled by the switch, not the PHY
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* itself.
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*/
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.config_intr = genphy_no_config_intr,
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.handle_interrupt = genphy_handle_interrupt_no_ack,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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.read_page = mtk_phy_read_page,
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.write_page = mtk_phy_write_page,
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},
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};
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module_phy_driver(mtk_gephy_driver);
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static const struct mdio_device_id __maybe_unused mtk_gephy_tbl[] = {
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{ PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7530) },
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{ PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7531) },
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{ }
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};
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MODULE_DESCRIPTION("MediaTek Gigabit Ethernet PHY driver");
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MODULE_AUTHOR("DENG, Qingfang <dqfext@gmail.com>");
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MODULE_LICENSE("GPL");
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MODULE_DEVICE_TABLE(mdio, mtk_gephy_tbl);
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