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Message-ID: <20240206194751.1901802-3-ericwouds@gmail.com>
Date: Tue, 6 Feb 2024 20:47:51 +0100
From: Eric Woudstra <ericwouds@...il.com>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
"Frank Wunderlich" <frank-w@...lic-files.de>,
Daniel Golle <daniel@...rotopia.org>,
Lucien Jheng <lucien.jheng@...oha.com>,
Zhi-Jun You <hujy652@...tonmail.com>
Cc: netdev@...r.kernel.org,
devicetree@...r.kernel.org,
Eric Woudstra <ericwouds@...il.com>
Subject: [PATCH net-next 2/2] net: phy: air_en8811h: Add the Airoha EN8811H PHY driver
* Source originated from airoha's en8811h v1.2.1 driver
* Moved air_en8811h.h to air_en8811h.c
* Removed air_pbus_reg_write() as it writes to another device on mdio-bus
* Load firmware from /lib/firmware/airoha/ instead of /lib/firmware/
* Added .get_rate_matching()
* Use generic phy_read/write() and phy_read/write_mmd()
* Edited .get_features() to use generic C45 functions
* Edited .config_aneg() and .read_status() to use a mix of generic C22/C45
* Use led handling functions from mediatek-ge-soc.c
* Simplified led handling by storing led rules
* Cleanup macro definitions
* Cleanup code to pass checkpatch.pl
* General code cleanup
Changes from original RFC patch:
* Use the correct order in Kconfig and Makefile
* Change some register naming to correspond with datasheet
* Use phy_driver .read_page() and .write_page()
* Use module_phy_driver()
* Use get_unaligned_le16() instead of macro
* In .config_aneg() and .read_status() use genphy_xxx() C22
* Use another vendor register to read real speed
* Load firmware only once and store firmware version
* Apply 2.5G LPA work-around (firmware before 24011202)
* Read 2.5G LPA from vendor register (firmware 24011202 and later)
Changes to be committed:
modified: drivers/net/phy/Kconfig
modified: drivers/net/phy/Makefile
new file: drivers/net/phy/air_en8811h.c
Signed-off-by: Eric Woudstra <ericwouds@...il.com>
---
drivers/net/phy/Kconfig | 5 +
drivers/net/phy/Makefile | 1 +
drivers/net/phy/air_en8811h.c | 1006 +++++++++++++++++++++++++++++++++
3 files changed, 1012 insertions(+)
create mode 100644 drivers/net/phy/air_en8811h.c
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index e261e58bf158..efbff264b659 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -76,6 +76,11 @@ config SFP
comment "MII PHY device drivers"
+config AIR_EN8811H_PHY
+ tristate "Airoha EN8811H 2.5 Gigabit PHY"
+ help
+ Currently supports the Airoha EN8811H PHY.
+
config AMD_PHY
tristate "AMD and Altima PHYs"
help
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 197acfa0b412..202ed7f450da 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -34,6 +34,7 @@ obj-y += $(sfp-obj-y) $(sfp-obj-m)
obj-$(CONFIG_ADIN_PHY) += adin.o
obj-$(CONFIG_ADIN1100_PHY) += adin1100.o
+obj-$(CONFIG_AIR_EN8811H_PHY) += air_en8811h.o
obj-$(CONFIG_AMD_PHY) += amd.o
obj-$(CONFIG_AQUANTIA_PHY) += aquantia/
ifdef CONFIG_AX88796B_RUST_PHY
diff --git a/drivers/net/phy/air_en8811h.c b/drivers/net/phy/air_en8811h.c
new file mode 100644
index 000000000000..45ae8d20f752
--- /dev/null
+++ b/drivers/net/phy/air_en8811h.c
@@ -0,0 +1,1006 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Driver for Airoha Ethernet PHYs
+ *
+ * Currently supporting the EN8811H.
+ *
+ * Limitations of the EN8811H:
+ * - Only full duplex supported
+ * - Forced speed (AN off) is not supported by hardware (100Mbps)
+ *
+ * Source originated from airoha's en8811h.c and en8811h.h v1.2.1
+ *
+ * Copyright (C) 2023 Airoha Technology Corp.
+ */
+
+#include <linux/phy.h>
+#include <linux/firmware.h>
+#include <linux/property.h>
+#include <asm/unaligned.h>
+
+#define EN8811H_PHY_ID 0x03a2a411
+
+#define EN8811H_MD32_DM "airoha/EthMD32.dm.bin"
+#define EN8811H_MD32_DSP "airoha/EthMD32.DSP.bin"
+
+#define AIR_FW_ADDR_DM 0x00000000
+#define AIR_FW_ADDR_DSP 0x00100000
+
+/* u32 (DWORD) component macros */
+#define LOWORD(d) ((u16)(u32)(d))
+#define HIWORD(d) ((u16)(((u32)(d)) >> 16))
+
+/* MII Registers */
+#define AIR_AUX_CTRL_STATUS 0x1d
+#define AIR_AUX_CTRL_STATUS_SPEED_MASK GENMASK(4, 2)
+#define AIR_AUX_CTRL_STATUS_SPEED_100 0x4
+#define AIR_AUX_CTRL_STATUS_SPEED_1000 0x8
+#define AIR_AUX_CTRL_STATUS_SPEED_2500 0xc
+
+#define AIR_EXT_PAGE_ACCESS 0x1f
+#define AIR_PHY_PAGE_STANDARD 0x0000
+#define AIR_PHY_PAGE_EXTENDED_4 0x0004
+
+/* MII Registers Page 4*/
+#define AIR_PBUS_MODE 0x10
+#define AIR_PBUS_MODE_ADDR_FIXED 0x0000
+#define AIR_PBUS_MODE_ADDR_INCR BIT(15)
+#define AIR_PBUS_WR_ADDR_HIGH 0x11
+#define AIR_PBUS_WR_ADDR_LOW 0x12
+#define AIR_PBUS_WR_DATA_HIGH 0x13
+#define AIR_PBUS_WR_DATA_LOW 0x14
+#define AIR_PBUS_RD_ADDR_HIGH 0x15
+#define AIR_PBUS_RD_ADDR_LOW 0x16
+#define AIR_PBUS_RD_DATA_HIGH 0x17
+#define AIR_PBUS_RD_DATA_LOW 0x18
+
+/* Registers on MDIO_MMD_VEND1 */
+#define EN8811H_PHY_FW_STATUS 0x8009
+#define EN8811H_PHY_READY 0x02
+
+#define AIR_PHY_HOST_CMD_1 0x800c
+#define AIR_PHY_HOST_CMD_1_MODE1 0x0
+#define AIR_PHY_HOST_CMD_2 0x800d
+#define AIR_PHY_HOST_CMD_2_MODE1 0x0
+#define AIR_PHY_HOST_CMD_3 0x800e
+#define AIR_PHY_HOST_CMD_3_MODE1 0x1101
+#define AIR_PHY_HOST_CMD_3_DOCMD 0x1100
+#define AIR_PHY_HOST_CMD_4 0x800f
+#define AIR_PHY_HOST_CMD_4_MODE1 0x0002
+#define AIR_PHY_HOST_CMD_4_INTCLR 0x00e4
+
+/* Registers on MDIO_MMD_VEND2 */
+#define AIR_PHY_LED_BCR 0x021
+#define AIR_PHY_LED_BCR_MODE_MASK GENMASK(1, 0)
+#define AIR_PHY_LED_BCR_TIME_TEST BIT(2)
+#define AIR_PHY_LED_BCR_CLK_EN BIT(3)
+#define AIR_PHY_LED_BCR_EXT_CTRL BIT(15)
+
+#define AIR_PHY_LED_DUR_ON 0x022
+
+#define AIR_PHY_LED_DUR_BLINK 0x023
+
+#define AIR_PHY_LED_ON(i) (0x024 + ((i) * 2))
+#define AIR_PHY_LED_ON_MASK (GENMASK(6, 0) | BIT(8))
+#define AIR_PHY_LED_ON_LINK1000 BIT(0)
+#define AIR_PHY_LED_ON_LINK100 BIT(1)
+#define AIR_PHY_LED_ON_LINK10 BIT(2)
+#define AIR_PHY_LED_ON_LINKDOWN BIT(3)
+#define AIR_PHY_LED_ON_FDX BIT(4) /* Full duplex */
+#define AIR_PHY_LED_ON_HDX BIT(5) /* Half duplex */
+#define AIR_PHY_LED_ON_FORCE_ON BIT(6)
+#define AIR_PHY_LED_ON_LINK2500 BIT(8)
+#define AIR_PHY_LED_ON_POLARITY BIT(14)
+#define AIR_PHY_LED_ON_ENABLE BIT(15)
+
+#define AIR_PHY_LED_BLINK(i) (0x025 + ((i) * 2))
+#define AIR_PHY_LED_BLINK_1000TX BIT(0)
+#define AIR_PHY_LED_BLINK_1000RX BIT(1)
+#define AIR_PHY_LED_BLINK_100TX BIT(2)
+#define AIR_PHY_LED_BLINK_100RX BIT(3)
+#define AIR_PHY_LED_BLINK_10TX BIT(4)
+#define AIR_PHY_LED_BLINK_10RX BIT(5)
+#define AIR_PHY_LED_BLINK_COLLISION BIT(6)
+#define AIR_PHY_LED_BLINK_RX_CRC_ERR BIT(7)
+#define AIR_PHY_LED_BLINK_RX_IDLE_ERR BIT(8)
+#define AIR_PHY_LED_BLINK_FORCE_BLINK BIT(9)
+#define AIR_PHY_LED_BLINK_2500TX BIT(10)
+#define AIR_PHY_LED_BLINK_2500RX BIT(11)
+
+/* Registers on BUCKPBUS */
+#define EN8811H_2P5G_LPA 0x3b30
+#define EN8811H_2P5G_LPA_2P5G BIT(0)
+
+#define EN8811H_FW_VERSION 0x3b3c
+
+#define EN8811H_POLARITY 0xca0f8
+#define EN8811H_POLARITY_TX_NORMAL BIT(0)
+#define EN8811H_POLARITY_RX_REVERSE BIT(1)
+
+#define EN8811H_GPIO_OUTPUT 0xcf8b8
+#define EN8811H_GPIO_OUTPUT_345 (BIT(3) | BIT(4) | BIT(5))
+
+#define EN8811H_FW_CTRL_1 0x0f0018
+#define EN8811H_FW_CTRL_1_START 0x0
+#define EN8811H_FW_CTRL_1_FINISH 0x1
+#define EN8811H_FW_CTRL_2 0x800000
+#define EN8811H_FW_CTRL_2_LOADING BIT(11)
+
+#define EN8811H_LED_COUNT 3
+
+/* GPIO5 <-> BASE_T_LED0
+ * GPIO4 <-> BASE_T_LED1
+ * GPIO3 <-> BASE_T_LED2
+ *
+ * Default setup suitable for 2 leds connected:
+ * 100M link up triggers led0, only led0 blinking on traffic
+ * 1000M link up triggers led1, only led1 blinking on traffic
+ * 2500M link up triggers led0 and led1, both blinking on traffic
+ * Also suitable for 1 led connected:
+ * any link up triggers led2
+ */
+#define AIR_DEFAULT_TRIGGER_LED0 (BIT(TRIGGER_NETDEV_LINK_2500) | \
+ BIT(TRIGGER_NETDEV_LINK_100) | \
+ BIT(TRIGGER_NETDEV_RX) | \
+ BIT(TRIGGER_NETDEV_TX))
+#define AIR_DEFAULT_TRIGGER_LED1 (BIT(TRIGGER_NETDEV_LINK_2500) | \
+ BIT(TRIGGER_NETDEV_LINK_1000) | \
+ BIT(TRIGGER_NETDEV_RX) | \
+ BIT(TRIGGER_NETDEV_TX))
+#define AIR_DEFAULT_TRIGGER_LED2 BIT(TRIGGER_NETDEV_LINK)
+
+struct led {
+ unsigned long rules;
+ unsigned long state;
+};
+
+struct en8811h_priv {
+ u32 firmware_version;
+ struct led led[EN8811H_LED_COUNT];
+};
+
+enum {
+ AIR_PHY_LED_STATE_FORCE_ON,
+ AIR_PHY_LED_STATE_FORCE_BLINK,
+};
+
+enum {
+ AIR_PHY_LED_DUR_BLINK_32M,
+ AIR_PHY_LED_DUR_BLINK_64M,
+ AIR_PHY_LED_DUR_BLINK_128M,
+ AIR_PHY_LED_DUR_BLINK_256M,
+ AIR_PHY_LED_DUR_BLINK_512M,
+ AIR_PHY_LED_DUR_BLINK_1024M,
+};
+
+enum {
+ AIR_LED_DISABLE,
+ AIR_LED_ENABLE,
+};
+
+enum {
+ AIR_ACTIVE_LOW,
+ AIR_ACTIVE_HIGH,
+};
+
+enum {
+ AIR_LED_MODE_DISABLE,
+ AIR_LED_MODE_USER_DEFINE,
+};
+
+#define AIR_PHY_LED_DUR_UNIT 1024
+#define AIR_PHY_LED_DUR (AIR_PHY_LED_DUR_UNIT << AIR_PHY_LED_DUR_BLINK_64M)
+
+static const unsigned long en8811h_led_trig = (BIT(TRIGGER_NETDEV_FULL_DUPLEX) |
+ BIT(TRIGGER_NETDEV_LINK) |
+ BIT(TRIGGER_NETDEV_LINK_10) |
+ BIT(TRIGGER_NETDEV_LINK_100) |
+ BIT(TRIGGER_NETDEV_LINK_1000) |
+ BIT(TRIGGER_NETDEV_LINK_2500) |
+ BIT(TRIGGER_NETDEV_RX) |
+ BIT(TRIGGER_NETDEV_TX));
+
+static int air_phy_read_page(struct phy_device *phydev)
+{
+ return __phy_read(phydev, AIR_EXT_PAGE_ACCESS);
+}
+
+static int air_phy_write_page(struct phy_device *phydev, int page)
+{
+ return __phy_write(phydev, AIR_EXT_PAGE_ACCESS, page);
+}
+
+static int __air_buckpbus_reg_write(struct phy_device *phydev,
+ u32 pbus_address, u32 pbus_data)
+{
+ int ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_MODE, AIR_PBUS_MODE_ADDR_FIXED);
+ if (ret < 0)
+ return ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_WR_ADDR_HIGH, HIWORD(pbus_address));
+ if (ret < 0)
+ return ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_WR_ADDR_LOW, LOWORD(pbus_address));
+ if (ret < 0)
+ return ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_WR_DATA_HIGH, HIWORD(pbus_data));
+ if (ret < 0)
+ return ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_WR_DATA_LOW, LOWORD(pbus_data));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int air_buckpbus_reg_write(struct phy_device *phydev,
+ u32 pbus_address, u32 pbus_data)
+{
+ int ret, saved_page;
+
+ saved_page = phy_select_page(phydev, AIR_PHY_PAGE_EXTENDED_4);
+
+ ret = __air_buckpbus_reg_write(phydev, pbus_address, pbus_data);
+ if (ret < 0)
+ phydev_err(phydev, "%s 0x%08x failed: %d\n", __func__,
+ pbus_address, ret);
+
+ return phy_restore_page(phydev, saved_page, ret);
+;
+}
+
+static int __air_buckpbus_reg_read(struct phy_device *phydev,
+ u32 pbus_address, u32 *pbus_data)
+{
+ int pbus_data_low, pbus_data_high;
+ int ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_MODE, AIR_PBUS_MODE_ADDR_FIXED);
+ if (ret < 0)
+ return ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_RD_ADDR_HIGH, HIWORD(pbus_address));
+ if (ret < 0)
+ return ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_RD_ADDR_LOW, LOWORD(pbus_address));
+ if (ret < 0)
+ return ret;
+
+ pbus_data_high = __phy_read(phydev, AIR_PBUS_RD_DATA_HIGH);
+ if (pbus_data_high < 0)
+ return ret;
+
+ pbus_data_low = __phy_read(phydev, AIR_PBUS_RD_DATA_LOW);
+ if (pbus_data_low < 0)
+ return ret;
+
+ *pbus_data = (u16)pbus_data_low | ((u32)(u16)pbus_data_high << 16);
+ return 0;
+}
+
+static int air_buckpbus_reg_read(struct phy_device *phydev,
+ u32 pbus_address, u32 *pbus_data)
+{
+ int ret, saved_page;
+
+ saved_page = phy_select_page(phydev, AIR_PHY_PAGE_EXTENDED_4);
+
+ ret = __air_buckpbus_reg_read(phydev, pbus_address, pbus_data);
+ if (ret < 0)
+ phydev_err(phydev, "%s 0x%08x failed: %d\n", __func__,
+ pbus_address, ret);
+
+ return phy_restore_page(phydev, saved_page, ret);
+}
+
+static int __air_write_buf(struct phy_device *phydev, u32 address,
+ const struct firmware *fw)
+{
+ unsigned int offset;
+ int ret;
+ u16 val;
+
+ ret = __phy_write(phydev, AIR_PBUS_MODE, AIR_PBUS_MODE_ADDR_INCR);
+ if (ret < 0)
+ return ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_WR_ADDR_HIGH, HIWORD(address));
+ if (ret < 0)
+ return ret;
+
+ ret = __phy_write(phydev, AIR_PBUS_WR_ADDR_LOW, LOWORD(address));
+ if (ret < 0)
+ return ret;
+
+ for (offset = 0; offset < fw->size; offset += 4) {
+ val = get_unaligned_le16(&fw->data[offset + 2]);
+ ret = __phy_write(phydev, AIR_PBUS_WR_DATA_HIGH, val);
+ if (ret < 0)
+ return ret;
+
+ val = get_unaligned_le16(&fw->data[offset]);
+ ret = __phy_write(phydev, AIR_PBUS_WR_DATA_LOW, val);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int air_write_buf(struct phy_device *phydev, u32 address,
+ const struct firmware *fw)
+{
+ int ret, saved_page;
+
+ saved_page = phy_select_page(phydev, AIR_PHY_PAGE_EXTENDED_4);
+
+ ret = __air_write_buf(phydev, address, fw);
+ if (ret < 0)
+ phydev_err(phydev, "%s 0x%08x failed: %d\n", __func__,
+ address, ret);
+
+ return phy_restore_page(phydev, saved_page, ret);
+}
+
+static int en8811h_load_firmware(struct phy_device *phydev)
+{
+ struct device *dev = &phydev->mdio.dev;
+ const struct firmware *fw1, *fw2;
+ u32 pbus_value;
+ int ret;
+
+ ret = request_firmware_direct(&fw1, EN8811H_MD32_DM, dev);
+ if (ret < 0)
+ return ret;
+
+ ret = request_firmware_direct(&fw2, EN8811H_MD32_DSP, dev);
+ if (ret < 0)
+ goto en8811h_load_firmware_rel1;
+
+ ret = air_buckpbus_reg_write(phydev, EN8811H_FW_CTRL_1,
+ EN8811H_FW_CTRL_1_START);
+ if (ret < 0)
+ goto en8811h_load_firmware_out;
+
+ ret = air_buckpbus_reg_read(phydev, EN8811H_FW_CTRL_2, &pbus_value);
+ if (ret < 0)
+ goto en8811h_load_firmware_out;
+ pbus_value |= EN8811H_FW_CTRL_2_LOADING;
+ ret = air_buckpbus_reg_write(phydev, EN8811H_FW_CTRL_2, pbus_value);
+ if (ret < 0)
+ goto en8811h_load_firmware_out;
+
+ ret = air_write_buf(phydev, AIR_FW_ADDR_DM, fw1);
+ if (ret < 0)
+ goto en8811h_load_firmware_out;
+
+ ret = air_write_buf(phydev, AIR_FW_ADDR_DSP, fw2);
+ if (ret < 0)
+ goto en8811h_load_firmware_out;
+
+ ret = air_buckpbus_reg_read(phydev, EN8811H_FW_CTRL_2, &pbus_value);
+ if (ret < 0)
+ goto en8811h_load_firmware_out;
+ pbus_value &= ~EN8811H_FW_CTRL_2_LOADING;
+ ret = air_buckpbus_reg_write(phydev, EN8811H_FW_CTRL_2, pbus_value);
+ if (ret < 0)
+ goto en8811h_load_firmware_out;
+
+ ret = air_buckpbus_reg_write(phydev, EN8811H_FW_CTRL_1,
+ EN8811H_FW_CTRL_1_FINISH);
+ if (ret < 0)
+ goto en8811h_load_firmware_out;
+
+ ret = 0;
+
+en8811h_load_firmware_out:
+ release_firmware(fw2);
+
+en8811h_load_firmware_rel1:
+ release_firmware(fw1);
+
+ if (ret < 0)
+ phydev_err(phydev, "Load firmware failed: %d\n", ret);
+
+ return ret;
+}
+
+static int en8811h_restart_host(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = air_buckpbus_reg_write(phydev, EN8811H_FW_CTRL_1,
+ EN8811H_FW_CTRL_1_START);
+ if (ret < 0)
+ return ret;
+
+ return air_buckpbus_reg_write(phydev, EN8811H_FW_CTRL_1,
+ EN8811H_FW_CTRL_1_FINISH);
+}
+
+static int air_hw_led_on_set(struct phy_device *phydev, u8 index, bool on)
+{
+ struct en8811h_priv *priv = phydev->priv;
+ bool changed;
+
+ if (index >= EN8811H_LED_COUNT)
+ return -EINVAL;
+
+ if (on)
+ changed = !test_and_set_bit(AIR_PHY_LED_STATE_FORCE_ON,
+ &priv->led[index].state);
+ else
+ changed = !!test_and_clear_bit(AIR_PHY_LED_STATE_FORCE_ON,
+ &priv->led[index].state);
+
+ changed |= (priv->led[index].rules != 0);
+
+ if (changed)
+ return phy_modify_mmd(phydev, MDIO_MMD_VEND2,
+ AIR_PHY_LED_ON(index),
+ AIR_PHY_LED_ON_MASK,
+ on ? AIR_PHY_LED_ON_FORCE_ON : 0);
+
+ return 0;
+}
+
+static int air_hw_led_blink_set(struct phy_device *phydev, u8 index,
+ bool blinking)
+{
+ struct en8811h_priv *priv = phydev->priv;
+ bool changed;
+
+ if (index >= EN8811H_LED_COUNT)
+ return -EINVAL;
+
+ if (blinking)
+ changed = !test_and_set_bit(AIR_PHY_LED_STATE_FORCE_BLINK,
+ &priv->led[index].state);
+ else
+ changed = !!test_and_clear_bit(AIR_PHY_LED_STATE_FORCE_BLINK,
+ &priv->led[index].state);
+
+ changed |= (priv->led[index].rules != 0);
+
+ if (changed)
+ return phy_write_mmd(phydev, MDIO_MMD_VEND2,
+ AIR_PHY_LED_BLINK(index),
+ blinking ?
+ AIR_PHY_LED_BLINK_FORCE_BLINK : 0);
+ else
+ return 0;
+}
+
+static int air_led_blink_set(struct phy_device *phydev, u8 index,
+ unsigned long *delay_on,
+ unsigned long *delay_off)
+{
+ struct en8811h_priv *priv = phydev->priv;
+ bool blinking = false;
+ int err;
+
+ if (index >= EN8811H_LED_COUNT)
+ return -EINVAL;
+
+ if (delay_on && delay_off && (*delay_on > 0) && (*delay_off > 0)) {
+ blinking = true;
+ *delay_on = 50;
+ *delay_off = 50;
+ }
+
+ err = air_hw_led_blink_set(phydev, index, blinking);
+ if (err)
+ return err;
+
+ /* led-blink set, so switch led-on off */
+ err = air_hw_led_on_set(phydev, index, false);
+ if (err)
+ return err;
+
+ /* hw-control is off*/
+ if (!!test_bit(AIR_PHY_LED_STATE_FORCE_BLINK, &priv->led[index].state))
+ priv->led[index].rules = 0;
+
+ return 0;
+}
+
+static int air_led_brightness_set(struct phy_device *phydev, u8 index,
+ enum led_brightness value)
+{
+ struct en8811h_priv *priv = phydev->priv;
+ int err;
+
+ if (index >= EN8811H_LED_COUNT)
+ return -EINVAL;
+
+ /* led-on set, so switch led-blink off */
+ err = air_hw_led_blink_set(phydev, index, false);
+ if (err)
+ return err;
+
+ err = air_hw_led_on_set(phydev, index, (value != LED_OFF));
+ if (err)
+ return err;
+
+ /* hw-control is off */
+ if (!!test_bit(AIR_PHY_LED_STATE_FORCE_ON, &priv->led[index].state))
+ priv->led[index].rules = 0;
+
+ return 0;
+}
+
+static int air_led_hw_control_get(struct phy_device *phydev, u8 index,
+ unsigned long *rules)
+{
+ struct en8811h_priv *priv = phydev->priv;
+
+ if (index >= EN8811H_LED_COUNT)
+ return -EINVAL;
+
+ *rules = priv->led[index].rules;
+
+ return 0;
+};
+
+static int air_led_hw_control_set(struct phy_device *phydev, u8 index,
+ unsigned long rules)
+{
+ struct en8811h_priv *priv = phydev->priv;
+ u16 on = 0, blink = 0;
+ int ret;
+
+ priv->led[index].rules = rules;
+
+ if (index >= EN8811H_LED_COUNT)
+ return -EINVAL;
+
+ if (rules & (BIT(TRIGGER_NETDEV_LINK_10) | BIT(TRIGGER_NETDEV_LINK))) {
+ on |= AIR_PHY_LED_ON_LINK10;
+ if (rules & BIT(TRIGGER_NETDEV_RX))
+ blink |= AIR_PHY_LED_BLINK_10RX;
+ if (rules & BIT(TRIGGER_NETDEV_TX))
+ blink |= AIR_PHY_LED_BLINK_10TX;
+ }
+
+ if (rules & (BIT(TRIGGER_NETDEV_LINK_100) | BIT(TRIGGER_NETDEV_LINK))) {
+ on |= AIR_PHY_LED_ON_LINK100;
+ if (rules & BIT(TRIGGER_NETDEV_RX))
+ blink |= AIR_PHY_LED_BLINK_100RX;
+ if (rules & BIT(TRIGGER_NETDEV_TX))
+ blink |= AIR_PHY_LED_BLINK_100TX;
+ }
+
+ if (rules & (BIT(TRIGGER_NETDEV_LINK_1000) | BIT(TRIGGER_NETDEV_LINK))) {
+ on |= AIR_PHY_LED_ON_LINK1000;
+ if (rules & BIT(TRIGGER_NETDEV_RX))
+ blink |= AIR_PHY_LED_BLINK_1000RX;
+ if (rules & BIT(TRIGGER_NETDEV_TX))
+ blink |= AIR_PHY_LED_BLINK_1000TX;
+ }
+
+ if (rules & (BIT(TRIGGER_NETDEV_LINK_2500) | BIT(TRIGGER_NETDEV_LINK))) {
+ on |= AIR_PHY_LED_ON_LINK2500;
+ if (rules & BIT(TRIGGER_NETDEV_RX))
+ blink |= AIR_PHY_LED_BLINK_2500RX;
+ if (rules & BIT(TRIGGER_NETDEV_TX))
+ blink |= AIR_PHY_LED_BLINK_2500TX;
+ }
+
+ if (on == 0) {
+ if (rules & BIT(TRIGGER_NETDEV_RX)) {
+ blink |= AIR_PHY_LED_BLINK_10RX |
+ AIR_PHY_LED_BLINK_100RX |
+ AIR_PHY_LED_BLINK_1000RX |
+ AIR_PHY_LED_BLINK_2500RX;
+ }
+ if (rules & BIT(TRIGGER_NETDEV_TX)) {
+ blink |= AIR_PHY_LED_BLINK_10TX |
+ AIR_PHY_LED_BLINK_100TX |
+ AIR_PHY_LED_BLINK_1000TX |
+ AIR_PHY_LED_BLINK_2500TX;
+ }
+ }
+
+ if (rules & BIT(TRIGGER_NETDEV_FULL_DUPLEX))
+ on |= AIR_PHY_LED_ON_FDX;
+
+ if (rules & BIT(TRIGGER_NETDEV_HALF_DUPLEX))
+ on |= AIR_PHY_LED_ON_HDX;
+
+ if (blink || on) {
+ /* switch hw-control on, so led-on and led-blink are off */
+ clear_bit(AIR_PHY_LED_STATE_FORCE_ON, &priv->led[index].state);
+ clear_bit(AIR_PHY_LED_STATE_FORCE_BLINK, &priv->led[index].state);
+ } else {
+ priv->led[index].rules = 0;
+ }
+
+ ret = phy_modify_mmd(phydev, MDIO_MMD_VEND2, AIR_PHY_LED_ON(index),
+ AIR_PHY_LED_ON_MASK, on);
+
+ if (ret < 0)
+ return ret;
+
+ return phy_write_mmd(phydev, MDIO_MMD_VEND2, AIR_PHY_LED_BLINK(index),
+ blink);
+};
+
+static int air_led_init(struct phy_device *phydev, u8 index, u8 state, u8 pol)
+{
+ int cl45_data;
+ int err;
+
+ if (index >= EN8811H_LED_COUNT)
+ return -EINVAL;
+
+ cl45_data = phy_read_mmd(phydev, MDIO_MMD_VEND2, AIR_PHY_LED_ON(index));
+ if (cl45_data < 0)
+ return cl45_data;
+
+ if (state == AIR_LED_ENABLE)
+ cl45_data |= AIR_PHY_LED_ON_ENABLE;
+ else
+ cl45_data &= ~AIR_PHY_LED_ON_ENABLE;
+
+ if (pol == AIR_ACTIVE_HIGH)
+ cl45_data |= AIR_PHY_LED_ON_POLARITY;
+ else
+ cl45_data &= ~AIR_PHY_LED_ON_POLARITY;
+
+ err = phy_write_mmd(phydev, MDIO_MMD_VEND2, AIR_PHY_LED_ON(index),
+ cl45_data);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int air_leds_init(struct phy_device *phydev, int num, int dur, int mode)
+{
+ struct en8811h_priv *priv = phydev->priv;
+ int cl45_data = dur;
+ int ret, i;
+
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, AIR_PHY_LED_DUR_BLINK,
+ cl45_data);
+ if (ret < 0)
+ return ret;
+
+ cl45_data >>= 1;
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, AIR_PHY_LED_DUR_ON,
+ cl45_data);
+ if (ret < 0)
+ return ret;
+
+ cl45_data = phy_read_mmd(phydev, MDIO_MMD_VEND2, AIR_PHY_LED_BCR);
+ if (cl45_data < 0)
+ return cl45_data;
+
+ switch (mode) {
+ case AIR_LED_MODE_DISABLE:
+ cl45_data &= ~AIR_PHY_LED_BCR_EXT_CTRL;
+ cl45_data &= ~AIR_PHY_LED_BCR_MODE_MASK;
+ break;
+ case AIR_LED_MODE_USER_DEFINE:
+ cl45_data |= AIR_PHY_LED_BCR_EXT_CTRL;
+ cl45_data |= AIR_PHY_LED_BCR_CLK_EN;
+ break;
+ default:
+ phydev_err(phydev, "LED mode %d is not supported\n", mode);
+ return -EINVAL;
+ }
+
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, AIR_PHY_LED_BCR, cl45_data);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < num; ++i) {
+ ret = air_led_init(phydev, i, AIR_LED_ENABLE, AIR_ACTIVE_HIGH);
+ if (ret < 0) {
+ phydev_err(phydev, "LED%d init failed: %d\n", i, ret);
+ return ret;
+ }
+ air_led_hw_control_set(phydev, i, priv->led[i].rules);
+ }
+
+ return 0;
+}
+
+static int en8811h_led_hw_is_supported(struct phy_device *phydev, u8 index,
+ unsigned long rules)
+{
+ if (index >= EN8811H_LED_COUNT)
+ return -EINVAL;
+
+ /* All combinations of the supported triggers are allowed */
+ if (rules & ~en8811h_led_trig)
+ return -EOPNOTSUPP;
+
+ return 0;
+};
+
+static int en8811h_probe(struct phy_device *phydev)
+{
+ struct en8811h_priv *priv;
+
+ priv = devm_kzalloc(&phydev->mdio.dev, sizeof(struct en8811h_priv),
+ GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->led[0].rules = AIR_DEFAULT_TRIGGER_LED0;
+ priv->led[1].rules = AIR_DEFAULT_TRIGGER_LED1;
+ priv->led[2].rules = AIR_DEFAULT_TRIGGER_LED2;
+
+ phydev->priv = priv;
+
+ /* MDIO_DEVS1/2 empty, so set mmds_present bits here */
+ phydev->c45_ids.mmds_present |= MDIO_DEVS_PMAPMD | MDIO_DEVS_AN;
+
+ return 0;
+}
+
+static int en8811h_config_init(struct phy_device *phydev)
+{
+ struct en8811h_priv *priv = phydev->priv;
+ struct device *dev = &phydev->mdio.dev;
+ int ret, pollret, reg_value;
+ u32 pbus_value;
+
+ if (!priv->firmware_version)
+ ret = en8811h_load_firmware(phydev);
+ else
+ ret = en8811h_restart_host(phydev);
+ if (ret < 0)
+ return ret;
+
+ /* Because of mdio-lock, may have to wait for multiple loads */
+ pollret = phy_read_mmd_poll_timeout(phydev, MDIO_MMD_VEND1,
+ EN8811H_PHY_FW_STATUS, reg_value,
+ reg_value == EN8811H_PHY_READY,
+ 20000, 7500000, true);
+
+ ret = air_buckpbus_reg_read(phydev, EN8811H_FW_VERSION, &pbus_value);
+ if (ret < 0)
+ return ret;
+
+ if (pollret || !pbus_value) {
+ phydev_err(phydev, "Firmware not ready: 0x%x\n", reg_value);
+ return -ENODEV;
+ }
+
+ if (!priv->firmware_version) {
+ phydev_info(phydev, "MD32 firmware version: %08x\n", pbus_value);
+ priv->firmware_version = pbus_value;
+ }
+
+ /* Select mode 1, the only mode supported */
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND1, AIR_PHY_HOST_CMD_1,
+ AIR_PHY_HOST_CMD_1_MODE1);
+ if (ret < 0)
+ return ret;
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND1, AIR_PHY_HOST_CMD_2,
+ AIR_PHY_HOST_CMD_2_MODE1);
+ if (ret < 0)
+ return ret;
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND1, AIR_PHY_HOST_CMD_3,
+ AIR_PHY_HOST_CMD_3_MODE1);
+ if (ret < 0)
+ return ret;
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND1, AIR_PHY_HOST_CMD_4,
+ AIR_PHY_HOST_CMD_4_MODE1);
+ if (ret < 0)
+ return ret;
+
+ /* Serdes polarity */
+ ret = air_buckpbus_reg_read(phydev, EN8811H_POLARITY, &pbus_value);
+ if (ret < 0)
+ return ret;
+ if (device_property_read_bool(dev, "airoha,pnswap-rx"))
+ pbus_value |= EN8811H_POLARITY_RX_REVERSE;
+ else
+ pbus_value &= ~EN8811H_POLARITY_RX_REVERSE;
+ if (device_property_read_bool(dev, "airoha,pnswap-tx"))
+ pbus_value &= ~EN8811H_POLARITY_TX_NORMAL;
+ else
+ pbus_value |= EN8811H_POLARITY_TX_NORMAL;
+ ret = air_buckpbus_reg_write(phydev, EN8811H_POLARITY, pbus_value);
+ if (ret < 0)
+ return ret;
+
+ ret = air_leds_init(phydev, EN8811H_LED_COUNT, AIR_PHY_LED_DUR,
+ AIR_LED_MODE_USER_DEFINE);
+ if (ret < 0) {
+ phydev_err(phydev, "Failed to initialize leds: %d\n", ret);
+ return ret;
+ }
+
+ ret = air_buckpbus_reg_read(phydev, EN8811H_GPIO_OUTPUT, &pbus_value);
+ if (ret < 0)
+ return ret;
+ pbus_value |= EN8811H_GPIO_OUTPUT_345;
+ ret = air_buckpbus_reg_write(phydev, EN8811H_GPIO_OUTPUT, pbus_value);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int en8811h_get_features(struct phy_device *phydev)
+{
+ linkmode_set_bit_array(phy_basic_ports_array,
+ ARRAY_SIZE(phy_basic_ports_array),
+ phydev->supported);
+
+ return genphy_c45_pma_read_abilities(phydev);
+}
+
+static int en8811h_get_rate_matching(struct phy_device *phydev,
+ phy_interface_t iface)
+{
+ return RATE_MATCH_PAUSE;
+}
+
+static int en8811h_config_aneg(struct phy_device *phydev)
+{
+ bool changed = false;
+ int err, val;
+
+ val = 0;
+ if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
+ phydev->advertising))
+ val |= MDIO_AN_10GBT_CTRL_ADV2_5G;
+ err = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
+ MDIO_AN_10GBT_CTRL_ADV2_5G, val);
+ if (err < 0)
+ return err;
+ if (err > 0)
+ changed = true;
+
+ return __genphy_config_aneg(phydev, changed);
+}
+
+static int en8811h_read_status(struct phy_device *phydev)
+{
+ struct en8811h_priv *priv = phydev->priv;
+ u32 pbus_value;
+ int ret, val;
+
+ ret = genphy_update_link(phydev);
+ if (ret)
+ return ret;
+
+ phydev->master_slave_get = MASTER_SLAVE_CFG_UNSUPPORTED;
+ phydev->master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED;
+ phydev->speed = SPEED_UNKNOWN;
+ phydev->duplex = DUPLEX_UNKNOWN;
+ phydev->pause = 0;
+ phydev->asym_pause = 0;
+
+ ret = genphy_read_master_slave(phydev);
+ if (ret < 0)
+ return ret;
+
+ ret = genphy_read_lpa(phydev);
+ if (ret < 0)
+ return ret;
+
+ /* Get link partner 2.5GBASE-T ability from vendor register */
+ ret = air_buckpbus_reg_read(phydev, EN8811H_2P5G_LPA, &pbus_value);
+ if (ret < 0)
+ return ret;
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
+ phydev->lp_advertising,
+ pbus_value & EN8811H_2P5G_LPA_2P5G);
+
+ if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete)
+ phy_resolve_aneg_pause(phydev);
+
+ if (!phydev->link)
+ return 0;
+
+ /* Get real speed from vendor register */
+ val = phy_read(phydev, AIR_AUX_CTRL_STATUS);
+ if (val < 0)
+ return val;
+ switch (val & AIR_AUX_CTRL_STATUS_SPEED_MASK) {
+ case AIR_AUX_CTRL_STATUS_SPEED_2500:
+ phydev->speed = SPEED_2500;
+ break;
+ case AIR_AUX_CTRL_STATUS_SPEED_1000:
+ phydev->speed = SPEED_1000;
+ break;
+ case AIR_AUX_CTRL_STATUS_SPEED_100:
+ phydev->speed = SPEED_100;
+ break;
+ }
+
+ /* BUG in PHY firmware: MDIO_AN_10GBT_STAT_LP2_5G does not get set.
+ * Firmware before version 24011202 has no vendor register 2P5G_LPA.
+ * Assume link partner advertised it if connected at 2500Mbps.
+ */
+ if (priv->firmware_version < 0x24011202) {
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
+ phydev->lp_advertising,
+ phydev->speed == SPEED_2500);
+ }
+
+ /* Only supports full duplex */
+ phydev->duplex = DUPLEX_FULL;
+
+ return 0;
+}
+
+static int en8811h_clear_intr(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND1, AIR_PHY_HOST_CMD_3,
+ AIR_PHY_HOST_CMD_3_DOCMD);
+ if (ret < 0)
+ return ret;
+
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND1, AIR_PHY_HOST_CMD_4,
+ AIR_PHY_HOST_CMD_4_INTCLR);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static irqreturn_t en8811h_handle_interrupt(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = en8811h_clear_intr(phydev);
+ if (ret < 0) {
+ phy_error(phydev);
+ return IRQ_NONE;
+ }
+
+ phy_trigger_machine(phydev);
+
+ return IRQ_HANDLED;
+}
+
+static struct phy_driver en8811h_driver[] = {
+{
+ PHY_ID_MATCH_MODEL(EN8811H_PHY_ID),
+ .name = "Airoha EN8811H",
+ .probe = en8811h_probe,
+ .get_features = en8811h_get_features,
+ .config_init = en8811h_config_init,
+ .get_rate_matching = en8811h_get_rate_matching,
+ .config_aneg = en8811h_config_aneg,
+ .read_status = en8811h_read_status,
+ .config_intr = en8811h_clear_intr,
+ .handle_interrupt = en8811h_handle_interrupt,
+ .led_hw_is_supported = en8811h_led_hw_is_supported,
+ .read_page = air_phy_read_page,
+ .write_page = air_phy_write_page,
+ .led_blink_set = air_led_blink_set,
+ .led_brightness_set = air_led_brightness_set,
+ .led_hw_control_set = air_led_hw_control_set,
+ .led_hw_control_get = air_led_hw_control_get,
+} };
+
+module_phy_driver(en8811h_driver);
+
+static struct mdio_device_id __maybe_unused en8811h_tbl[] = {
+ { PHY_ID_MATCH_MODEL(EN8811H_PHY_ID) },
+ { }
+};
+MODULE_DEVICE_TABLE(mdio, en8811h_tbl);
+MODULE_FIRMWARE(EN8811H_MD32_DM);
+MODULE_FIRMWARE(EN8811H_MD32_DSP);
+
+MODULE_DESCRIPTION("Airoha EN8811H PHY drivers");
+MODULE_AUTHOR("Airoha");
+MODULE_AUTHOR("Eric Woudstra <ericwouds@...il.com>");
+MODULE_LICENSE("GPL");
--
2.42.1
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