325 lines
7 KiB
C
325 lines
7 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 MediaTek Inc.
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* Author: Sean Wang <sean.wang@mediatek.com>
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*/
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#include <linux/phy.h>
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#include <linux/regmap.h>
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#include "mtk_eth_soc.h"
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struct mtk_eth_muxc {
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int (*set_path)(struct mtk_eth *eth, int path);
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};
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static const char * const mtk_eth_mux_name[] = {
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"mux_gdm1_to_gmac1_esw", "mux_gmac2_gmac0_to_gephy",
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"mux_u3_gmac2_to_qphy", "mux_gmac1_gmac2_to_sgmii_rgmii",
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"mux_gmac12_to_gephy_sgmii",
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};
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static const char * const mtk_eth_path_name[] = {
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"gmac1_rgmii", "gmac1_trgmii", "gmac1_sgmii", "gmac2_rgmii",
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"gmac2_sgmii", "gmac2_gephy", "gdm1_esw",
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};
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static int set_mux_gdm1_to_gmac1_esw(struct mtk_eth *eth, int path)
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{
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u32 val, mask, set;
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bool updated = true;
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switch (path) {
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case MTK_ETH_PATH_GMAC1_SGMII:
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mask = ~(u32)MTK_MUX_TO_ESW;
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set = 0;
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break;
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case MTK_ETH_PATH_GDM1_ESW:
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mask = ~(u32)MTK_MUX_TO_ESW;
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set = MTK_MUX_TO_ESW;
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break;
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default:
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updated = false;
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break;
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};
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if (updated) {
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val = mtk_r32(eth, MTK_MAC_MISC);
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val = (val & mask) | set;
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mtk_w32(eth, val, MTK_MAC_MISC);
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}
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dev_info(eth->dev, "path %s in %s updated = %d\n",
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mtk_eth_path_name[path], __func__, updated);
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return 0;
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}
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static int set_mux_gmac2_gmac0_to_gephy(struct mtk_eth *eth, int path)
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{
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unsigned int val = 0;
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bool updated = true;
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switch (path) {
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case MTK_ETH_PATH_GMAC2_GEPHY:
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val = ~(u32)GEPHY_MAC_SEL;
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break;
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default:
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updated = false;
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break;
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}
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if (updated)
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regmap_update_bits(eth->infra, INFRA_MISC2, GEPHY_MAC_SEL, val);
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dev_info(eth->dev, "path %s in %s updated = %d\n",
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mtk_eth_path_name[path], __func__, updated);
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return 0;
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}
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static int set_mux_u3_gmac2_to_qphy(struct mtk_eth *eth, int path)
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{
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unsigned int val = 0;
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bool updated = true;
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switch (path) {
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case MTK_ETH_PATH_GMAC2_SGMII:
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val = CO_QPHY_SEL;
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break;
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default:
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updated = false;
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break;
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}
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if (updated)
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regmap_update_bits(eth->infra, INFRA_MISC2, CO_QPHY_SEL, val);
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dev_info(eth->dev, "path %s in %s updated = %d\n",
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mtk_eth_path_name[path], __func__, updated);
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return 0;
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}
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static int set_mux_gmac1_gmac2_to_sgmii_rgmii(struct mtk_eth *eth, int path)
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{
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unsigned int val = 0;
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bool updated = true;
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switch (path) {
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case MTK_ETH_PATH_GMAC1_SGMII:
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val = SYSCFG0_SGMII_GMAC1;
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break;
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case MTK_ETH_PATH_GMAC2_SGMII:
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val = SYSCFG0_SGMII_GMAC2;
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break;
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case MTK_ETH_PATH_GMAC1_RGMII:
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case MTK_ETH_PATH_GMAC2_RGMII:
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regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val);
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val &= SYSCFG0_SGMII_MASK;
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if ((path == MTK_GMAC1_RGMII && val == SYSCFG0_SGMII_GMAC1) ||
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(path == MTK_GMAC2_RGMII && val == SYSCFG0_SGMII_GMAC2))
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val = 0;
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else
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updated = false;
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break;
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default:
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updated = false;
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break;
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};
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if (updated)
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regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0,
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SYSCFG0_SGMII_MASK, val);
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dev_info(eth->dev, "path %s in %s updated = %d\n",
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mtk_eth_path_name[path], __func__, updated);
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return 0;
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}
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static int set_mux_gmac12_to_gephy_sgmii(struct mtk_eth *eth, int path)
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{
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unsigned int val = 0;
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bool updated = true;
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regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val);
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switch (path) {
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case MTK_ETH_PATH_GMAC1_SGMII:
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val |= SYSCFG0_SGMII_GMAC1_V2;
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break;
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case MTK_ETH_PATH_GMAC2_GEPHY:
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val &= ~(u32)SYSCFG0_SGMII_GMAC2_V2;
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break;
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case MTK_ETH_PATH_GMAC2_SGMII:
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val |= SYSCFG0_SGMII_GMAC2_V2;
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break;
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default:
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updated = false;
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};
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if (updated)
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regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0,
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SYSCFG0_SGMII_MASK, val);
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if (!updated)
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dev_info(eth->dev, "path %s no needs updatiion in %s\n",
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mtk_eth_path_name[path], __func__);
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dev_info(eth->dev, "path %s in %s updated = %d\n",
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mtk_eth_path_name[path], __func__, updated);
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return 0;
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}
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static const struct mtk_eth_muxc mtk_eth_muxc[] = {
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{ .set_path = set_mux_gdm1_to_gmac1_esw, },
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{ .set_path = set_mux_gmac2_gmac0_to_gephy, },
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{ .set_path = set_mux_u3_gmac2_to_qphy, },
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{ .set_path = set_mux_gmac1_gmac2_to_sgmii_rgmii, },
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{ .set_path = set_mux_gmac12_to_gephy_sgmii, }
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};
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static int mtk_eth_mux_setup(struct mtk_eth *eth, int path)
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{
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int i, err = 0;
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if (!MTK_HAS_CAPS(eth->soc->caps, MTK_PATH_BIT(path))) {
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dev_info(eth->dev, "path %s isn't support on the SoC\n",
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mtk_eth_path_name[path]);
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return -EINVAL;
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}
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if (!MTK_HAS_CAPS(eth->soc->caps, MTK_MUX))
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return 0;
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/* Setup MUX in path fabric */
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for (i = 0; i < MTK_ETH_MUX_MAX; i++) {
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if (MTK_HAS_CAPS(eth->soc->caps, MTK_MUX_BIT(i))) {
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err = mtk_eth_muxc[i].set_path(eth, path);
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if (err)
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goto out;
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} else {
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dev_info(eth->dev, "mux %s isn't present on the SoC\n",
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mtk_eth_mux_name[i]);
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}
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}
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out:
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return err;
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}
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static int mtk_gmac_sgmii_path_setup(struct mtk_eth *eth, int mac_id)
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{
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unsigned int val = 0;
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int sid, err, path;
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path = (mac_id == 0) ? MTK_ETH_PATH_GMAC1_SGMII :
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MTK_ETH_PATH_GMAC2_SGMII;
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/* Setup proper MUXes along the path */
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err = mtk_eth_mux_setup(eth, path);
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if (err)
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return err;
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/* The path GMAC to SGMII will be enabled once the SGMIISYS is being
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* setup done.
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*/
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regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val);
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regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0,
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SYSCFG0_SGMII_MASK, ~(u32)SYSCFG0_SGMII_MASK);
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/* Decide how GMAC and SGMIISYS be mapped */
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sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ? 0 : mac_id;
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/* Setup SGMIISYS with the determined property */
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if (MTK_HAS_FLAGS(eth->sgmii->flags[sid], MTK_SGMII_PHYSPEED_AN))
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err = mtk_sgmii_setup_mode_an(eth->sgmii, sid);
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else
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err = mtk_sgmii_setup_mode_force(eth->sgmii, sid);
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if (err)
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return err;
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regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0,
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SYSCFG0_SGMII_MASK, val);
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return 0;
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}
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static int mtk_gmac_gephy_path_setup(struct mtk_eth *eth, int mac_id)
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{
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int err, path = 0;
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if (mac_id == 1)
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path = MTK_ETH_PATH_GMAC2_GEPHY;
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if (!path)
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return -EINVAL;
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/* Setup proper MUXes along the path */
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err = mtk_eth_mux_setup(eth, path);
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if (err)
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return err;
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return 0;
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}
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static int mtk_gmac_rgmii_path_setup(struct mtk_eth *eth, int mac_id)
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{
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int err, path;
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path = (mac_id == 0) ? MTK_ETH_PATH_GMAC1_RGMII :
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MTK_ETH_PATH_GMAC2_RGMII;
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/* Setup proper MUXes along the path */
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err = mtk_eth_mux_setup(eth, path);
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if (err)
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return err;
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return 0;
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}
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int mtk_setup_hw_path(struct mtk_eth *eth, int mac_id, int phymode)
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{
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int err;
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switch (phymode) {
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case PHY_INTERFACE_MODE_TRGMII:
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case PHY_INTERFACE_MODE_RGMII_TXID:
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case PHY_INTERFACE_MODE_RGMII_RXID:
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case PHY_INTERFACE_MODE_RGMII_ID:
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case PHY_INTERFACE_MODE_RGMII:
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case PHY_INTERFACE_MODE_MII:
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case PHY_INTERFACE_MODE_REVMII:
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case PHY_INTERFACE_MODE_RMII:
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if (MTK_HAS_CAPS(eth->soc->caps, MTK_RGMII)) {
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err = mtk_gmac_rgmii_path_setup(eth, mac_id);
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if (err)
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return err;
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}
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break;
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case PHY_INTERFACE_MODE_SGMII:
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if (MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) {
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err = mtk_gmac_sgmii_path_setup(eth, mac_id);
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if (err)
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return err;
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}
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break;
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case PHY_INTERFACE_MODE_GMII:
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if (MTK_HAS_CAPS(eth->soc->caps, MTK_GEPHY)) {
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err = mtk_gmac_gephy_path_setup(eth, mac_id);
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if (err)
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return err;
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}
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break;
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default:
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break;
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}
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return 0;
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}
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