--- /dev/null
+From 2f70bbddeb457580cef3ceb574506083b9272188 Mon Sep 17 00:00:00 2001
+From: Sebastian Reichel <sebastian.reichel@collabora.com>
+Date: Tue, 9 Apr 2024 00:50:29 +0200
+Subject: [PATCH] phy: rockchip: add usbdp combo phy driver
+
+This adds a new USBDP combo PHY with Samsung IP block driver.
+
+The driver get lane mux and mapping info in 2 ways, supporting
+DisplayPort alternate mode or parsing from DT. When parsing from DT,
+the property "rockchip,dp-lane-mux" provide the DP mux and mapping
+info. This is needed when the PHY is not used with TypeC Alt-Mode.
+For example if the USB3 interface of the PHY is connected to a USB
+Type A connector and the DP interface is connected to a DisplayPort
+connector.
+
+When do DP link training, need to set lane number, link rate, swing,
+and pre-emphasis via PHY configure interface.
+
+Co-developed-by: Heiko Stuebner <heiko@sntech.de>
+Signed-off-by: Heiko Stuebner <heiko@sntech.de>
+Co-developed-by: Zhang Yubing <yubing.zhang@rock-chips.com>
+Signed-off-by: Zhang Yubing <yubing.zhang@rock-chips.com>
+Co-developed-by: Frank Wang <frank.wang@rock-chips.com>
+Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
+Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
+Link: https://lore.kernel.org/r/20240408225109.128953-3-sebastian.reichel@collabora.com
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+---
+ drivers/phy/rockchip/Kconfig | 12 +
+ drivers/phy/rockchip/Makefile | 1 +
+ drivers/phy/rockchip/phy-rockchip-usbdp.c | 1608 +++++++++++++++++++++
+ 3 files changed, 1621 insertions(+)
+ create mode 100644 drivers/phy/rockchip/phy-rockchip-usbdp.c
+
+--- a/drivers/phy/rockchip/Kconfig
++++ b/drivers/phy/rockchip/Kconfig
+@@ -107,3 +107,15 @@ config PHY_ROCKCHIP_USB
+ select GENERIC_PHY
+ help
+ Enable this to support the Rockchip USB 2.0 PHY.
++
++config PHY_ROCKCHIP_USBDP
++ tristate "Rockchip USBDP COMBO PHY Driver"
++ depends on ARCH_ROCKCHIP && OF
++ select GENERIC_PHY
++ select TYPEC
++ help
++ Enable this to support the Rockchip USB3.0/DP combo PHY with
++ Samsung IP block. This is required for USB3 support on RK3588.
++
++ To compile this driver as a module, choose M here: the module
++ will be called phy-rockchip-usbdp
+--- a/drivers/phy/rockchip/Makefile
++++ b/drivers/phy/rockchip/Makefile
+@@ -11,3 +11,4 @@ obj-$(CONFIG_PHY_ROCKCHIP_PCIE) += phy-
+ obj-$(CONFIG_PHY_ROCKCHIP_SNPS_PCIE3) += phy-rockchip-snps-pcie3.o
+ obj-$(CONFIG_PHY_ROCKCHIP_TYPEC) += phy-rockchip-typec.o
+ obj-$(CONFIG_PHY_ROCKCHIP_USB) += phy-rockchip-usb.o
++obj-$(CONFIG_PHY_ROCKCHIP_USBDP) += phy-rockchip-usbdp.o
+--- /dev/null
++++ b/drivers/phy/rockchip/phy-rockchip-usbdp.c
+@@ -0,0 +1,1608 @@
++// SPDX-License-Identifier: GPL-2.0-or-later
++/*
++ * Rockchip USBDP Combo PHY with Samsung IP block driver
++ *
++ * Copyright (C) 2021-2024 Rockchip Electronics Co., Ltd
++ * Copyright (C) 2024 Collabora Ltd
++ */
++
++#include <dt-bindings/phy/phy.h>
++#include <linux/bitfield.h>
++#include <linux/bits.h>
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio.h>
++#include <linux/mfd/syscon.h>
++#include <linux/mod_devicetable.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/phy/phy.h>
++#include <linux/platform_device.h>
++#include <linux/property.h>
++#include <linux/regmap.h>
++#include <linux/reset.h>
++#include <linux/usb/ch9.h>
++#include <linux/usb/typec_dp.h>
++#include <linux/usb/typec_mux.h>
++
++/* USBDP PHY Register Definitions */
++#define UDPHY_PCS 0x4000
++#define UDPHY_PMA 0x8000
++
++/* VO0 GRF Registers */
++#define DP_SINK_HPD_CFG BIT(11)
++#define DP_SINK_HPD_SEL BIT(10)
++#define DP_AUX_DIN_SEL BIT(9)
++#define DP_AUX_DOUT_SEL BIT(8)
++#define DP_LANE_SEL_N(n) GENMASK(2 * (n) + 1, 2 * (n))
++#define DP_LANE_SEL_ALL GENMASK(7, 0)
++
++/* PMA CMN Registers */
++#define CMN_LANE_MUX_AND_EN_OFFSET 0x0288 /* cmn_reg00A2 */
++#define CMN_DP_LANE_MUX_N(n) BIT((n) + 4)
++#define CMN_DP_LANE_EN_N(n) BIT(n)
++#define CMN_DP_LANE_MUX_ALL GENMASK(7, 4)
++#define CMN_DP_LANE_EN_ALL GENMASK(3, 0)
++
++#define CMN_DP_LINK_OFFSET 0x28c /* cmn_reg00A3 */
++#define CMN_DP_TX_LINK_BW GENMASK(6, 5)
++#define CMN_DP_TX_LANE_SWAP_EN BIT(2)
++
++#define CMN_SSC_EN_OFFSET 0x2d0 /* cmn_reg00B4 */
++#define CMN_ROPLL_SSC_EN BIT(1)
++#define CMN_LCPLL_SSC_EN BIT(0)
++
++#define CMN_ANA_LCPLL_DONE_OFFSET 0x0350 /* cmn_reg00D4 */
++#define CMN_ANA_LCPLL_LOCK_DONE BIT(7)
++#define CMN_ANA_LCPLL_AFC_DONE BIT(6)
++
++#define CMN_ANA_ROPLL_DONE_OFFSET 0x0354 /* cmn_reg00D5 */
++#define CMN_ANA_ROPLL_LOCK_DONE BIT(1)
++#define CMN_ANA_ROPLL_AFC_DONE BIT(0)
++
++#define CMN_DP_RSTN_OFFSET 0x038c /* cmn_reg00E3 */
++#define CMN_DP_INIT_RSTN BIT(3)
++#define CMN_DP_CMN_RSTN BIT(2)
++#define CMN_CDR_WTCHDG_EN BIT(1)
++#define CMN_CDR_WTCHDG_MSK_CDR_EN BIT(0)
++
++#define TRSV_ANA_TX_CLK_OFFSET_N(n) (0x854 + (n) * 0x800) /* trsv_reg0215 */
++#define LN_ANA_TX_SER_TXCLK_INV BIT(1)
++
++#define TRSV_LN0_MON_RX_CDR_DONE_OFFSET 0x0b84 /* trsv_reg02E1 */
++#define TRSV_LN0_MON_RX_CDR_LOCK_DONE BIT(0)
++
++#define TRSV_LN2_MON_RX_CDR_DONE_OFFSET 0x1b84 /* trsv_reg06E1 */
++#define TRSV_LN2_MON_RX_CDR_LOCK_DONE BIT(0)
++
++#define BIT_WRITEABLE_SHIFT 16
++#define PHY_AUX_DP_DATA_POL_NORMAL 0
++#define PHY_AUX_DP_DATA_POL_INVERT 1
++#define PHY_LANE_MUX_USB 0
++#define PHY_LANE_MUX_DP 1
++
++enum {
++ DP_BW_RBR,
++ DP_BW_HBR,
++ DP_BW_HBR2,
++ DP_BW_HBR3,
++};
++
++enum {
++ UDPHY_MODE_NONE = 0,
++ UDPHY_MODE_USB = BIT(0),
++ UDPHY_MODE_DP = BIT(1),
++ UDPHY_MODE_DP_USB = BIT(1) | BIT(0),
++};
++
++struct rk_udphy_grf_reg {
++ unsigned int offset;
++ unsigned int disable;
++ unsigned int enable;
++};
++
++#define _RK_UDPHY_GEN_GRF_REG(offset, mask, disable, enable) \
++{\
++ offset, \
++ FIELD_PREP_CONST(mask, disable) | (mask << BIT_WRITEABLE_SHIFT), \
++ FIELD_PREP_CONST(mask, enable) | (mask << BIT_WRITEABLE_SHIFT), \
++}
++
++#define RK_UDPHY_GEN_GRF_REG(offset, bitend, bitstart, disable, enable) \
++ _RK_UDPHY_GEN_GRF_REG(offset, GENMASK(bitend, bitstart), disable, enable)
++
++struct rk_udphy_grf_cfg {
++ /* u2phy-grf */
++ struct rk_udphy_grf_reg bvalid_phy_con;
++ struct rk_udphy_grf_reg bvalid_grf_con;
++
++ /* usb-grf */
++ struct rk_udphy_grf_reg usb3otg0_cfg;
++ struct rk_udphy_grf_reg usb3otg1_cfg;
++
++ /* usbdpphy-grf */
++ struct rk_udphy_grf_reg low_pwrn;
++ struct rk_udphy_grf_reg rx_lfps;
++};
++
++struct rk_udphy_vogrf_cfg {
++ /* vo-grf */
++ struct rk_udphy_grf_reg hpd_trigger;
++ u32 dp_lane_reg;
++};
++
++struct rk_udphy_dp_tx_drv_ctrl {
++ u32 trsv_reg0204;
++ u32 trsv_reg0205;
++ u32 trsv_reg0206;
++ u32 trsv_reg0207;
++};
++
++struct rk_udphy_cfg {
++ unsigned int num_phys;
++ unsigned int phy_ids[2];
++ /* resets to be requested */
++ const char * const *rst_list;
++ int num_rsts;
++
++ struct rk_udphy_grf_cfg grfcfg;
++ struct rk_udphy_vogrf_cfg vogrfcfg[2];
++ const struct rk_udphy_dp_tx_drv_ctrl (*dp_tx_ctrl_cfg[4])[4];
++ const struct rk_udphy_dp_tx_drv_ctrl (*dp_tx_ctrl_cfg_typec[4])[4];
++};
++
++struct rk_udphy {
++ struct device *dev;
++ struct regmap *pma_regmap;
++ struct regmap *u2phygrf;
++ struct regmap *udphygrf;
++ struct regmap *usbgrf;
++ struct regmap *vogrf;
++ struct typec_switch_dev *sw;
++ struct typec_mux_dev *mux;
++ struct mutex mutex; /* mutex to protect access to individual PHYs */
++
++ /* clocks and rests */
++ int num_clks;
++ struct clk_bulk_data *clks;
++ struct clk *refclk;
++ int num_rsts;
++ struct reset_control_bulk_data *rsts;
++
++ /* PHY status management */
++ bool flip;
++ bool mode_change;
++ u8 mode;
++ u8 status;
++
++ /* utilized for USB */
++ bool hs; /* flag for high-speed */
++
++ /* utilized for DP */
++ struct gpio_desc *sbu1_dc_gpio;
++ struct gpio_desc *sbu2_dc_gpio;
++ u32 lane_mux_sel[4];
++ u32 dp_lane_sel[4];
++ u32 dp_aux_dout_sel;
++ u32 dp_aux_din_sel;
++ bool dp_sink_hpd_sel;
++ bool dp_sink_hpd_cfg;
++ u8 bw;
++ int id;
++
++ bool dp_in_use;
++
++ /* PHY const config */
++ const struct rk_udphy_cfg *cfgs;
++
++ /* PHY devices */
++ struct phy *phy_dp;
++ struct phy *phy_u3;
++};
++
++static const struct rk_udphy_dp_tx_drv_ctrl rk3588_dp_tx_drv_ctrl_rbr_hbr[4][4] = {
++ /* voltage swing 0, pre-emphasis 0->3 */
++ {
++ { 0x20, 0x10, 0x42, 0xe5 },
++ { 0x26, 0x14, 0x42, 0xe5 },
++ { 0x29, 0x18, 0x42, 0xe5 },
++ { 0x2b, 0x1c, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 1, pre-emphasis 0->2 */
++ {
++ { 0x23, 0x10, 0x42, 0xe7 },
++ { 0x2a, 0x17, 0x43, 0xe7 },
++ { 0x2b, 0x1a, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 2, pre-emphasis 0->1 */
++ {
++ { 0x27, 0x10, 0x42, 0xe7 },
++ { 0x2b, 0x17, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 3, pre-emphasis 0 */
++ {
++ { 0x29, 0x10, 0x43, 0xe7 },
++ },
++};
++
++static const struct rk_udphy_dp_tx_drv_ctrl rk3588_dp_tx_drv_ctrl_rbr_hbr_typec[4][4] = {
++ /* voltage swing 0, pre-emphasis 0->3 */
++ {
++ { 0x20, 0x10, 0x42, 0xe5 },
++ { 0x26, 0x14, 0x42, 0xe5 },
++ { 0x29, 0x18, 0x42, 0xe5 },
++ { 0x2b, 0x1c, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 1, pre-emphasis 0->2 */
++ {
++ { 0x23, 0x10, 0x42, 0xe7 },
++ { 0x2a, 0x17, 0x43, 0xe7 },
++ { 0x2b, 0x1a, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 2, pre-emphasis 0->1 */
++ {
++ { 0x27, 0x10, 0x43, 0x67 },
++ { 0x2b, 0x17, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 3, pre-emphasis 0 */
++ {
++ { 0x29, 0x10, 0x43, 0xe7 },
++ },
++};
++
++static const struct rk_udphy_dp_tx_drv_ctrl rk3588_dp_tx_drv_ctrl_hbr2[4][4] = {
++ /* voltage swing 0, pre-emphasis 0->3 */
++ {
++ { 0x21, 0x10, 0x42, 0xe5 },
++ { 0x26, 0x14, 0x42, 0xe5 },
++ { 0x26, 0x16, 0x43, 0xe5 },
++ { 0x2a, 0x19, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 1, pre-emphasis 0->2 */
++ {
++ { 0x24, 0x10, 0x42, 0xe7 },
++ { 0x2a, 0x17, 0x43, 0xe7 },
++ { 0x2b, 0x1a, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 2, pre-emphasis 0->1 */
++ {
++ { 0x28, 0x10, 0x42, 0xe7 },
++ { 0x2b, 0x17, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 3, pre-emphasis 0 */
++ {
++ { 0x28, 0x10, 0x43, 0xe7 },
++ },
++};
++
++static const struct rk_udphy_dp_tx_drv_ctrl rk3588_dp_tx_drv_ctrl_hbr3[4][4] = {
++ /* voltage swing 0, pre-emphasis 0->3 */
++ {
++ { 0x21, 0x10, 0x42, 0xe5 },
++ { 0x26, 0x14, 0x42, 0xe5 },
++ { 0x26, 0x16, 0x43, 0xe5 },
++ { 0x29, 0x18, 0x43, 0xe7 },
++ },
++
++ /* voltage swing 1, pre-emphasis 0->2 */
++ {
++ { 0x24, 0x10, 0x42, 0xe7 },
++ { 0x2a, 0x18, 0x43, 0xe7 },
++ { 0x2b, 0x1b, 0x43, 0xe7 }
++ },
++
++ /* voltage swing 2, pre-emphasis 0->1 */
++ {
++ { 0x27, 0x10, 0x42, 0xe7 },
++ { 0x2b, 0x18, 0x43, 0xe7 }
++ },
++
++ /* voltage swing 3, pre-emphasis 0 */
++ {
++ { 0x28, 0x10, 0x43, 0xe7 },
++ },
++};
++
++static const struct reg_sequence rk_udphy_24m_refclk_cfg[] = {
++ {0x0090, 0x68}, {0x0094, 0x68},
++ {0x0128, 0x24}, {0x012c, 0x44},
++ {0x0130, 0x3f}, {0x0134, 0x44},
++ {0x015c, 0xa9}, {0x0160, 0x71},
++ {0x0164, 0x71}, {0x0168, 0xa9},
++ {0x0174, 0xa9}, {0x0178, 0x71},
++ {0x017c, 0x71}, {0x0180, 0xa9},
++ {0x018c, 0x41}, {0x0190, 0x00},
++ {0x0194, 0x05}, {0x01ac, 0x2a},
++ {0x01b0, 0x17}, {0x01b4, 0x17},
++ {0x01b8, 0x2a}, {0x01c8, 0x04},
++ {0x01cc, 0x08}, {0x01d0, 0x08},
++ {0x01d4, 0x04}, {0x01d8, 0x20},
++ {0x01dc, 0x01}, {0x01e0, 0x09},
++ {0x01e4, 0x03}, {0x01f0, 0x29},
++ {0x01f4, 0x02}, {0x01f8, 0x02},
++ {0x01fc, 0x29}, {0x0208, 0x2a},
++ {0x020c, 0x17}, {0x0210, 0x17},
++ {0x0214, 0x2a}, {0x0224, 0x20},
++ {0x03f0, 0x0a}, {0x03f4, 0x07},
++ {0x03f8, 0x07}, {0x03fc, 0x0c},
++ {0x0404, 0x12}, {0x0408, 0x1a},
++ {0x040c, 0x1a}, {0x0410, 0x3f},
++ {0x0ce0, 0x68}, {0x0ce8, 0xd0},
++ {0x0cf0, 0x87}, {0x0cf8, 0x70},
++ {0x0d00, 0x70}, {0x0d08, 0xa9},
++ {0x1ce0, 0x68}, {0x1ce8, 0xd0},
++ {0x1cf0, 0x87}, {0x1cf8, 0x70},
++ {0x1d00, 0x70}, {0x1d08, 0xa9},
++ {0x0a3c, 0xd0}, {0x0a44, 0xd0},
++ {0x0a48, 0x01}, {0x0a4c, 0x0d},
++ {0x0a54, 0xe0}, {0x0a5c, 0xe0},
++ {0x0a64, 0xa8}, {0x1a3c, 0xd0},
++ {0x1a44, 0xd0}, {0x1a48, 0x01},
++ {0x1a4c, 0x0d}, {0x1a54, 0xe0},
++ {0x1a5c, 0xe0}, {0x1a64, 0xa8}
++};
++
++static const struct reg_sequence rk_udphy_26m_refclk_cfg[] = {
++ {0x0830, 0x07}, {0x085c, 0x80},
++ {0x1030, 0x07}, {0x105c, 0x80},
++ {0x1830, 0x07}, {0x185c, 0x80},
++ {0x2030, 0x07}, {0x205c, 0x80},
++ {0x0228, 0x38}, {0x0104, 0x44},
++ {0x0248, 0x44}, {0x038c, 0x02},
++ {0x0878, 0x04}, {0x1878, 0x04},
++ {0x0898, 0x77}, {0x1898, 0x77},
++ {0x0054, 0x01}, {0x00e0, 0x38},
++ {0x0060, 0x24}, {0x0064, 0x77},
++ {0x0070, 0x76}, {0x0234, 0xe8},
++ {0x0af4, 0x15}, {0x1af4, 0x15},
++ {0x081c, 0xe5}, {0x181c, 0xe5},
++ {0x099c, 0x48}, {0x199c, 0x48},
++ {0x09a4, 0x07}, {0x09a8, 0x22},
++ {0x19a4, 0x07}, {0x19a8, 0x22},
++ {0x09b8, 0x3e}, {0x19b8, 0x3e},
++ {0x09e4, 0x02}, {0x19e4, 0x02},
++ {0x0a34, 0x1e}, {0x1a34, 0x1e},
++ {0x0a98, 0x2f}, {0x1a98, 0x2f},
++ {0x0c30, 0x0e}, {0x0c48, 0x06},
++ {0x1c30, 0x0e}, {0x1c48, 0x06},
++ {0x028c, 0x18}, {0x0af0, 0x00},
++ {0x1af0, 0x00}
++};
++
++static const struct reg_sequence rk_udphy_init_sequence[] = {
++ {0x0104, 0x44}, {0x0234, 0xe8},
++ {0x0248, 0x44}, {0x028c, 0x18},
++ {0x081c, 0xe5}, {0x0878, 0x00},
++ {0x0994, 0x1c}, {0x0af0, 0x00},
++ {0x181c, 0xe5}, {0x1878, 0x00},
++ {0x1994, 0x1c}, {0x1af0, 0x00},
++ {0x0428, 0x60}, {0x0d58, 0x33},
++ {0x1d58, 0x33}, {0x0990, 0x74},
++ {0x0d64, 0x17}, {0x08c8, 0x13},
++ {0x1990, 0x74}, {0x1d64, 0x17},
++ {0x18c8, 0x13}, {0x0d90, 0x40},
++ {0x0da8, 0x40}, {0x0dc0, 0x40},
++ {0x0dd8, 0x40}, {0x1d90, 0x40},
++ {0x1da8, 0x40}, {0x1dc0, 0x40},
++ {0x1dd8, 0x40}, {0x03c0, 0x30},
++ {0x03c4, 0x06}, {0x0e10, 0x00},
++ {0x1e10, 0x00}, {0x043c, 0x0f},
++ {0x0d2c, 0xff}, {0x1d2c, 0xff},
++ {0x0d34, 0x0f}, {0x1d34, 0x0f},
++ {0x08fc, 0x2a}, {0x0914, 0x28},
++ {0x0a30, 0x03}, {0x0e38, 0x03},
++ {0x0ecc, 0x27}, {0x0ed0, 0x22},
++ {0x0ed4, 0x26}, {0x18fc, 0x2a},
++ {0x1914, 0x28}, {0x1a30, 0x03},
++ {0x1e38, 0x03}, {0x1ecc, 0x27},
++ {0x1ed0, 0x22}, {0x1ed4, 0x26},
++ {0x0048, 0x0f}, {0x0060, 0x3c},
++ {0x0064, 0xf7}, {0x006c, 0x20},
++ {0x0070, 0x7d}, {0x0074, 0x68},
++ {0x0af4, 0x1a}, {0x1af4, 0x1a},
++ {0x0440, 0x3f}, {0x10d4, 0x08},
++ {0x20d4, 0x08}, {0x00d4, 0x30},
++ {0x0024, 0x6e},
++};
++
++static inline int rk_udphy_grfreg_write(struct regmap *base,
++ const struct rk_udphy_grf_reg *reg, bool en)
++{
++ return regmap_write(base, reg->offset, en ? reg->enable : reg->disable);
++}
++
++static int rk_udphy_clk_init(struct rk_udphy *udphy, struct device *dev)
++{
++ int i;
++
++ udphy->num_clks = devm_clk_bulk_get_all(dev, &udphy->clks);
++ if (udphy->num_clks < 1)
++ return -ENODEV;
++
++ /* used for configure phy reference clock frequency */
++ for (i = 0; i < udphy->num_clks; i++) {
++ if (!strncmp(udphy->clks[i].id, "refclk", 6)) {
++ udphy->refclk = udphy->clks[i].clk;
++ break;
++ }
++ }
++
++ if (!udphy->refclk)
++ return dev_err_probe(udphy->dev, -EINVAL, "no refclk found\n");
++
++ return 0;
++}
++
++static int rk_udphy_reset_assert_all(struct rk_udphy *udphy)
++{
++ return reset_control_bulk_assert(udphy->num_rsts, udphy->rsts);
++}
++
++static int rk_udphy_reset_deassert_all(struct rk_udphy *udphy)
++{
++ return reset_control_bulk_deassert(udphy->num_rsts, udphy->rsts);
++}
++
++static int rk_udphy_reset_deassert(struct rk_udphy *udphy, char *name)
++{
++ struct reset_control_bulk_data *list = udphy->rsts;
++ int idx;
++
++ for (idx = 0; idx < udphy->num_rsts; idx++) {
++ if (!strcmp(list[idx].id, name))
++ return reset_control_deassert(list[idx].rstc);
++ }
++
++ return -EINVAL;
++}
++
++static int rk_udphy_reset_init(struct rk_udphy *udphy, struct device *dev)
++{
++ const struct rk_udphy_cfg *cfg = udphy->cfgs;
++ int idx;
++
++ udphy->num_rsts = cfg->num_rsts;
++ udphy->rsts = devm_kcalloc(dev, udphy->num_rsts,
++ sizeof(*udphy->rsts), GFP_KERNEL);
++ if (!udphy->rsts)
++ return -ENOMEM;
++
++ for (idx = 0; idx < cfg->num_rsts; idx++)
++ udphy->rsts[idx].id = cfg->rst_list[idx];
++
++ return devm_reset_control_bulk_get_exclusive(dev, cfg->num_rsts,
++ udphy->rsts);
++}
++
++static void rk_udphy_u3_port_disable(struct rk_udphy *udphy, u8 disable)
++{
++ const struct rk_udphy_cfg *cfg = udphy->cfgs;
++ const struct rk_udphy_grf_reg *preg;
++
++ preg = udphy->id ? &cfg->grfcfg.usb3otg1_cfg : &cfg->grfcfg.usb3otg0_cfg;
++ rk_udphy_grfreg_write(udphy->usbgrf, preg, disable);
++}
++
++static void rk_udphy_usb_bvalid_enable(struct rk_udphy *udphy, u8 enable)
++{
++ const struct rk_udphy_cfg *cfg = udphy->cfgs;
++
++ rk_udphy_grfreg_write(udphy->u2phygrf, &cfg->grfcfg.bvalid_phy_con, enable);
++ rk_udphy_grfreg_write(udphy->u2phygrf, &cfg->grfcfg.bvalid_grf_con, enable);
++}
++
++/*
++ * In usb/dp combo phy driver, here are 2 ways to mapping lanes.
++ *
++ * 1 Type-C Mapping table (DP_Alt_Mode V1.0b remove ABF pin mapping)
++ * ---------------------------------------------------------------------------
++ * Type-C Pin B11-B10 A2-A3 A11-A10 B2-B3
++ * PHY Pad ln0(tx/rx) ln1(tx) ln2(tx/rx) ln3(tx)
++ * C/E(Normal) dpln3 dpln2 dpln0 dpln1
++ * C/E(Flip ) dpln0 dpln1 dpln3 dpln2
++ * D/F(Normal) usbrx usbtx dpln0 dpln1
++ * D/F(Flip ) dpln0 dpln1 usbrx usbtx
++ * A(Normal ) dpln3 dpln1 dpln2 dpln0
++ * A(Flip ) dpln2 dpln0 dpln3 dpln1
++ * B(Normal ) usbrx usbtx dpln1 dpln0
++ * B(Flip ) dpln1 dpln0 usbrx usbtx
++ * ---------------------------------------------------------------------------
++ *
++ * 2 Mapping the lanes in dtsi
++ * if all 4 lane assignment for dp function, define rockchip,dp-lane-mux = <x x x x>;
++ * sample as follow:
++ * ---------------------------------------------------------------------------
++ * B11-B10 A2-A3 A11-A10 B2-B3
++ * rockchip,dp-lane-mux ln0(tx/rx) ln1(tx) ln2(tx/rx) ln3(tx)
++ * <0 1 2 3> dpln0 dpln1 dpln2 dpln3
++ * <2 3 0 1> dpln2 dpln3 dpln0 dpln1
++ * ---------------------------------------------------------------------------
++ * if 2 lane for dp function, 2 lane for usb function, define rockchip,dp-lane-mux = <x x>;
++ * sample as follow:
++ * ---------------------------------------------------------------------------
++ * B11-B10 A2-A3 A11-A10 B2-B3
++ * rockchip,dp-lane-mux ln0(tx/rx) ln1(tx) ln2(tx/rx) ln3(tx)
++ * <0 1> dpln0 dpln1 usbrx usbtx
++ * <2 3> usbrx usbtx dpln0 dpln1
++ * ---------------------------------------------------------------------------
++ */
++
++static void rk_udphy_dplane_select(struct rk_udphy *udphy)
++{
++ const struct rk_udphy_cfg *cfg = udphy->cfgs;
++ u32 value = 0;
++
++ switch (udphy->mode) {
++ case UDPHY_MODE_DP:
++ value |= 2 << udphy->dp_lane_sel[2] * 2;
++ value |= 3 << udphy->dp_lane_sel[3] * 2;
++ fallthrough;
++
++ case UDPHY_MODE_DP_USB:
++ value |= 0 << udphy->dp_lane_sel[0] * 2;
++ value |= 1 << udphy->dp_lane_sel[1] * 2;
++ break;
++
++ case UDPHY_MODE_USB:
++ break;
++
++ default:
++ break;
++ }
++
++ regmap_write(udphy->vogrf, cfg->vogrfcfg[udphy->id].dp_lane_reg,
++ ((DP_AUX_DIN_SEL | DP_AUX_DOUT_SEL | DP_LANE_SEL_ALL) << 16) |
++ FIELD_PREP(DP_AUX_DIN_SEL, udphy->dp_aux_din_sel) |
++ FIELD_PREP(DP_AUX_DOUT_SEL, udphy->dp_aux_dout_sel) | value);
++}
++
++static int rk_udphy_dplane_get(struct rk_udphy *udphy)
++{
++ int dp_lanes;
++
++ switch (udphy->mode) {
++ case UDPHY_MODE_DP:
++ dp_lanes = 4;
++ break;
++
++ case UDPHY_MODE_DP_USB:
++ dp_lanes = 2;
++ break;
++
++ case UDPHY_MODE_USB:
++ default:
++ dp_lanes = 0;
++ break;
++ }
++
++ return dp_lanes;
++}
++
++static void rk_udphy_dplane_enable(struct rk_udphy *udphy, int dp_lanes)
++{
++ u32 val = 0;
++ int i;
++
++ for (i = 0; i < dp_lanes; i++)
++ val |= BIT(udphy->dp_lane_sel[i]);
++
++ regmap_update_bits(udphy->pma_regmap, CMN_LANE_MUX_AND_EN_OFFSET, CMN_DP_LANE_EN_ALL,
++ FIELD_PREP(CMN_DP_LANE_EN_ALL, val));
++
++ if (!dp_lanes)
++ regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET,
++ CMN_DP_CMN_RSTN, FIELD_PREP(CMN_DP_CMN_RSTN, 0x0));
++}
++
++static void rk_udphy_dp_hpd_event_trigger(struct rk_udphy *udphy, bool hpd)
++{
++ const struct rk_udphy_cfg *cfg = udphy->cfgs;
++
++ udphy->dp_sink_hpd_sel = true;
++ udphy->dp_sink_hpd_cfg = hpd;
++
++ if (!udphy->dp_in_use)
++ return;
++
++ rk_udphy_grfreg_write(udphy->vogrf, &cfg->vogrfcfg[udphy->id].hpd_trigger, hpd);
++}
++
++static void rk_udphy_set_typec_default_mapping(struct rk_udphy *udphy)
++{
++ if (udphy->flip) {
++ udphy->dp_lane_sel[0] = 0;
++ udphy->dp_lane_sel[1] = 1;
++ udphy->dp_lane_sel[2] = 3;
++ udphy->dp_lane_sel[3] = 2;
++ udphy->lane_mux_sel[0] = PHY_LANE_MUX_DP;
++ udphy->lane_mux_sel[1] = PHY_LANE_MUX_DP;
++ udphy->lane_mux_sel[2] = PHY_LANE_MUX_USB;
++ udphy->lane_mux_sel[3] = PHY_LANE_MUX_USB;
++ udphy->dp_aux_dout_sel = PHY_AUX_DP_DATA_POL_INVERT;
++ udphy->dp_aux_din_sel = PHY_AUX_DP_DATA_POL_INVERT;
++ gpiod_set_value_cansleep(udphy->sbu1_dc_gpio, 1);
++ gpiod_set_value_cansleep(udphy->sbu2_dc_gpio, 0);
++ } else {
++ udphy->dp_lane_sel[0] = 2;
++ udphy->dp_lane_sel[1] = 3;
++ udphy->dp_lane_sel[2] = 1;
++ udphy->dp_lane_sel[3] = 0;
++ udphy->lane_mux_sel[0] = PHY_LANE_MUX_USB;
++ udphy->lane_mux_sel[1] = PHY_LANE_MUX_USB;
++ udphy->lane_mux_sel[2] = PHY_LANE_MUX_DP;
++ udphy->lane_mux_sel[3] = PHY_LANE_MUX_DP;
++ udphy->dp_aux_dout_sel = PHY_AUX_DP_DATA_POL_NORMAL;
++ udphy->dp_aux_din_sel = PHY_AUX_DP_DATA_POL_NORMAL;
++ gpiod_set_value_cansleep(udphy->sbu1_dc_gpio, 0);
++ gpiod_set_value_cansleep(udphy->sbu2_dc_gpio, 1);
++ }
++
++ udphy->mode = UDPHY_MODE_DP_USB;
++}
++
++static int rk_udphy_orien_sw_set(struct typec_switch_dev *sw,
++ enum typec_orientation orien)
++{
++ struct rk_udphy *udphy = typec_switch_get_drvdata(sw);
++
++ mutex_lock(&udphy->mutex);
++
++ if (orien == TYPEC_ORIENTATION_NONE) {
++ gpiod_set_value_cansleep(udphy->sbu1_dc_gpio, 0);
++ gpiod_set_value_cansleep(udphy->sbu2_dc_gpio, 0);
++ /* unattached */
++ rk_udphy_usb_bvalid_enable(udphy, false);
++ goto unlock_ret;
++ }
++
++ udphy->flip = (orien == TYPEC_ORIENTATION_REVERSE) ? true : false;
++ rk_udphy_set_typec_default_mapping(udphy);
++ rk_udphy_usb_bvalid_enable(udphy, true);
++
++unlock_ret:
++ mutex_unlock(&udphy->mutex);
++ return 0;
++}
++
++static void rk_udphy_orien_switch_unregister(void *data)
++{
++ struct rk_udphy *udphy = data;
++
++ typec_switch_unregister(udphy->sw);
++}
++
++static int rk_udphy_setup_orien_switch(struct rk_udphy *udphy)
++{
++ struct typec_switch_desc sw_desc = { };
++
++ sw_desc.drvdata = udphy;
++ sw_desc.fwnode = dev_fwnode(udphy->dev);
++ sw_desc.set = rk_udphy_orien_sw_set;
++
++ udphy->sw = typec_switch_register(udphy->dev, &sw_desc);
++ if (IS_ERR(udphy->sw)) {
++ dev_err(udphy->dev, "Error register typec orientation switch: %ld\n",
++ PTR_ERR(udphy->sw));
++ return PTR_ERR(udphy->sw);
++ }
++
++ return devm_add_action_or_reset(udphy->dev,
++ rk_udphy_orien_switch_unregister, udphy);
++}
++
++static int rk_udphy_refclk_set(struct rk_udphy *udphy)
++{
++ unsigned long rate;
++ int ret;
++
++ /* configure phy reference clock */
++ rate = clk_get_rate(udphy->refclk);
++ dev_dbg(udphy->dev, "refclk freq %ld\n", rate);
++
++ switch (rate) {
++ case 24000000:
++ ret = regmap_multi_reg_write(udphy->pma_regmap, rk_udphy_24m_refclk_cfg,
++ ARRAY_SIZE(rk_udphy_24m_refclk_cfg));
++ if (ret)
++ return ret;
++ break;
++
++ case 26000000:
++ /* register default is 26MHz */
++ ret = regmap_multi_reg_write(udphy->pma_regmap, rk_udphy_26m_refclk_cfg,
++ ARRAY_SIZE(rk_udphy_26m_refclk_cfg));
++ if (ret)
++ return ret;
++ break;
++
++ default:
++ dev_err(udphy->dev, "unsupported refclk freq %ld\n", rate);
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static int rk_udphy_status_check(struct rk_udphy *udphy)
++{
++ unsigned int val;
++ int ret;
++
++ /* LCPLL check */
++ if (udphy->mode & UDPHY_MODE_USB) {
++ ret = regmap_read_poll_timeout(udphy->pma_regmap, CMN_ANA_LCPLL_DONE_OFFSET,
++ val, (val & CMN_ANA_LCPLL_AFC_DONE) &&
++ (val & CMN_ANA_LCPLL_LOCK_DONE), 200, 100000);
++ if (ret) {
++ dev_err(udphy->dev, "cmn ana lcpll lock timeout\n");
++ /*
++ * If earlier software (U-Boot) enabled USB once already
++ * the PLL may have problems locking on the first try.
++ * It will be successful on the second try, so for the
++ * time being a -EPROBE_DEFER will solve the issue.
++ *
++ * This requires further investigation to understand the
++ * root cause, especially considering that the driver is
++ * asserting all reset lines at probe time.
++ */
++ return -EPROBE_DEFER;
++ }
++
++ if (!udphy->flip) {
++ ret = regmap_read_poll_timeout(udphy->pma_regmap,
++ TRSV_LN0_MON_RX_CDR_DONE_OFFSET, val,
++ val & TRSV_LN0_MON_RX_CDR_LOCK_DONE,
++ 200, 100000);
++ if (ret)
++ dev_err(udphy->dev, "trsv ln0 mon rx cdr lock timeout\n");
++ } else {
++ ret = regmap_read_poll_timeout(udphy->pma_regmap,
++ TRSV_LN2_MON_RX_CDR_DONE_OFFSET, val,
++ val & TRSV_LN2_MON_RX_CDR_LOCK_DONE,
++ 200, 100000);
++ if (ret)
++ dev_err(udphy->dev, "trsv ln2 mon rx cdr lock timeout\n");
++ }
++ }
++
++ return 0;
++}
++
++static int rk_udphy_init(struct rk_udphy *udphy)
++{
++ const struct rk_udphy_cfg *cfg = udphy->cfgs;
++ int ret;
++
++ rk_udphy_reset_assert_all(udphy);
++ usleep_range(10000, 11000);
++
++ /* enable rx lfps for usb */
++ if (udphy->mode & UDPHY_MODE_USB)
++ rk_udphy_grfreg_write(udphy->udphygrf, &cfg->grfcfg.rx_lfps, true);
++
++ /* Step 1: power on pma and deassert apb rstn */
++ rk_udphy_grfreg_write(udphy->udphygrf, &cfg->grfcfg.low_pwrn, true);
++
++ rk_udphy_reset_deassert(udphy, "pma_apb");
++ rk_udphy_reset_deassert(udphy, "pcs_apb");
++
++ /* Step 2: set init sequence and phy refclk */
++ ret = regmap_multi_reg_write(udphy->pma_regmap, rk_udphy_init_sequence,
++ ARRAY_SIZE(rk_udphy_init_sequence));
++ if (ret) {
++ dev_err(udphy->dev, "init sequence set error %d\n", ret);
++ goto assert_resets;
++ }
++
++ ret = rk_udphy_refclk_set(udphy);
++ if (ret) {
++ dev_err(udphy->dev, "refclk set error %d\n", ret);
++ goto assert_resets;
++ }
++
++ /* Step 3: configure lane mux */
++ regmap_update_bits(udphy->pma_regmap, CMN_LANE_MUX_AND_EN_OFFSET,
++ CMN_DP_LANE_MUX_ALL | CMN_DP_LANE_EN_ALL,
++ FIELD_PREP(CMN_DP_LANE_MUX_N(3), udphy->lane_mux_sel[3]) |
++ FIELD_PREP(CMN_DP_LANE_MUX_N(2), udphy->lane_mux_sel[2]) |
++ FIELD_PREP(CMN_DP_LANE_MUX_N(1), udphy->lane_mux_sel[1]) |
++ FIELD_PREP(CMN_DP_LANE_MUX_N(0), udphy->lane_mux_sel[0]) |
++ FIELD_PREP(CMN_DP_LANE_EN_ALL, 0));
++
++ /* Step 4: deassert init rstn and wait for 200ns from datasheet */
++ if (udphy->mode & UDPHY_MODE_USB)
++ rk_udphy_reset_deassert(udphy, "init");
++
++ if (udphy->mode & UDPHY_MODE_DP) {
++ regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET,
++ CMN_DP_INIT_RSTN,
++ FIELD_PREP(CMN_DP_INIT_RSTN, 0x1));
++ }
++
++ udelay(1);
++
++ /* Step 5: deassert cmn/lane rstn */
++ if (udphy->mode & UDPHY_MODE_USB) {
++ rk_udphy_reset_deassert(udphy, "cmn");
++ rk_udphy_reset_deassert(udphy, "lane");
++ }
++
++ /* Step 6: wait for lock done of pll */
++ ret = rk_udphy_status_check(udphy);
++ if (ret)
++ goto assert_resets;
++
++ return 0;
++
++assert_resets:
++ rk_udphy_reset_assert_all(udphy);
++ return ret;
++}
++
++static int rk_udphy_setup(struct rk_udphy *udphy)
++{
++ int ret;
++
++ ret = clk_bulk_prepare_enable(udphy->num_clks, udphy->clks);
++ if (ret) {
++ dev_err(udphy->dev, "failed to enable clk\n");
++ return ret;
++ }
++
++ ret = rk_udphy_init(udphy);
++ if (ret) {
++ dev_err(udphy->dev, "failed to init combophy\n");
++ clk_bulk_disable_unprepare(udphy->num_clks, udphy->clks);
++ return ret;
++ }
++
++ return 0;
++}
++
++static void rk_udphy_disable(struct rk_udphy *udphy)
++{
++ clk_bulk_disable_unprepare(udphy->num_clks, udphy->clks);
++ rk_udphy_reset_assert_all(udphy);
++}
++
++static int rk_udphy_parse_lane_mux_data(struct rk_udphy *udphy)
++{
++ int ret, i, num_lanes;
++
++ num_lanes = device_property_count_u32(udphy->dev, "rockchip,dp-lane-mux");
++ if (num_lanes < 0) {
++ dev_dbg(udphy->dev, "no dp-lane-mux, following dp alt mode\n");
++ udphy->mode = UDPHY_MODE_USB;
++ return 0;
++ }
++
++ if (num_lanes != 2 && num_lanes != 4)
++ return dev_err_probe(udphy->dev, -EINVAL,
++ "invalid number of lane mux\n");
++
++ ret = device_property_read_u32_array(udphy->dev, "rockchip,dp-lane-mux",
++ udphy->dp_lane_sel, num_lanes);
++ if (ret)
++ return dev_err_probe(udphy->dev, ret, "get dp lane mux failed\n");
++
++ for (i = 0; i < num_lanes; i++) {
++ int j;
++
++ if (udphy->dp_lane_sel[i] > 3)
++ return dev_err_probe(udphy->dev, -EINVAL,
++ "lane mux between 0 and 3, exceeding the range\n");
++
++ udphy->lane_mux_sel[udphy->dp_lane_sel[i]] = PHY_LANE_MUX_DP;
++
++ for (j = i + 1; j < num_lanes; j++) {
++ if (udphy->dp_lane_sel[i] == udphy->dp_lane_sel[j])
++ return dev_err_probe(udphy->dev, -EINVAL,
++ "set repeat lane mux value\n");
++ }
++ }
++
++ udphy->mode = UDPHY_MODE_DP;
++ if (num_lanes == 2) {
++ udphy->mode |= UDPHY_MODE_USB;
++ udphy->flip = (udphy->lane_mux_sel[0] == PHY_LANE_MUX_DP);
++ }
++
++ return 0;
++}
++
++static int rk_udphy_get_initial_status(struct rk_udphy *udphy)
++{
++ int ret;
++ u32 value;
++
++ ret = clk_bulk_prepare_enable(udphy->num_clks, udphy->clks);
++ if (ret) {
++ dev_err(udphy->dev, "failed to enable clk\n");
++ return ret;
++ }
++
++ rk_udphy_reset_deassert_all(udphy);
++
++ regmap_read(udphy->pma_regmap, CMN_LANE_MUX_AND_EN_OFFSET, &value);
++ if (FIELD_GET(CMN_DP_LANE_MUX_ALL, value) && FIELD_GET(CMN_DP_LANE_EN_ALL, value))
++ udphy->status = UDPHY_MODE_DP;
++ else
++ rk_udphy_disable(udphy);
++
++ return 0;
++}
++
++static int rk_udphy_parse_dt(struct rk_udphy *udphy)
++{
++ struct device *dev = udphy->dev;
++ struct device_node *np = dev_of_node(dev);
++ enum usb_device_speed maximum_speed;
++ int ret;
++
++ udphy->u2phygrf = syscon_regmap_lookup_by_phandle(np, "rockchip,u2phy-grf");
++ if (IS_ERR(udphy->u2phygrf))
++ return dev_err_probe(dev, PTR_ERR(udphy->u2phygrf), "failed to get u2phy-grf\n");
++
++ udphy->udphygrf = syscon_regmap_lookup_by_phandle(np, "rockchip,usbdpphy-grf");
++ if (IS_ERR(udphy->udphygrf))
++ return dev_err_probe(dev, PTR_ERR(udphy->udphygrf), "failed to get usbdpphy-grf\n");
++
++ udphy->usbgrf = syscon_regmap_lookup_by_phandle(np, "rockchip,usb-grf");
++ if (IS_ERR(udphy->usbgrf))
++ return dev_err_probe(dev, PTR_ERR(udphy->usbgrf), "failed to get usb-grf\n");
++
++ udphy->vogrf = syscon_regmap_lookup_by_phandle(np, "rockchip,vo-grf");
++ if (IS_ERR(udphy->vogrf))
++ return dev_err_probe(dev, PTR_ERR(udphy->vogrf), "failed to get vo-grf\n");
++
++ ret = rk_udphy_parse_lane_mux_data(udphy);
++ if (ret)
++ return ret;
++
++ udphy->sbu1_dc_gpio = devm_gpiod_get_optional(dev, "sbu1-dc", GPIOD_OUT_LOW);
++ if (IS_ERR(udphy->sbu1_dc_gpio))
++ return PTR_ERR(udphy->sbu1_dc_gpio);
++
++ udphy->sbu2_dc_gpio = devm_gpiod_get_optional(dev, "sbu2-dc", GPIOD_OUT_LOW);
++ if (IS_ERR(udphy->sbu2_dc_gpio))
++ return PTR_ERR(udphy->sbu2_dc_gpio);
++
++ if (device_property_present(dev, "maximum-speed")) {
++ maximum_speed = usb_get_maximum_speed(dev);
++ udphy->hs = maximum_speed <= USB_SPEED_HIGH ? true : false;
++ }
++
++ ret = rk_udphy_clk_init(udphy, dev);
++ if (ret)
++ return ret;
++
++ return rk_udphy_reset_init(udphy, dev);
++}
++
++static int rk_udphy_power_on(struct rk_udphy *udphy, u8 mode)
++{
++ int ret;
++
++ if (!(udphy->mode & mode)) {
++ dev_info(udphy->dev, "mode 0x%02x is not support\n", mode);
++ return 0;
++ }
++
++ if (udphy->status == UDPHY_MODE_NONE) {
++ udphy->mode_change = false;
++ ret = rk_udphy_setup(udphy);
++ if (ret)
++ return ret;
++
++ if (udphy->mode & UDPHY_MODE_USB)
++ rk_udphy_u3_port_disable(udphy, false);
++ } else if (udphy->mode_change) {
++ udphy->mode_change = false;
++ udphy->status = UDPHY_MODE_NONE;
++ if (udphy->mode == UDPHY_MODE_DP)
++ rk_udphy_u3_port_disable(udphy, true);
++
++ rk_udphy_disable(udphy);
++ ret = rk_udphy_setup(udphy);
++ if (ret)
++ return ret;
++ }
++
++ udphy->status |= mode;
++
++ return 0;
++}
++
++static void rk_udphy_power_off(struct rk_udphy *udphy, u8 mode)
++{
++ if (!(udphy->mode & mode)) {
++ dev_info(udphy->dev, "mode 0x%02x is not support\n", mode);
++ return;
++ }
++
++ if (!udphy->status)
++ return;
++
++ udphy->status &= ~mode;
++
++ if (udphy->status == UDPHY_MODE_NONE)
++ rk_udphy_disable(udphy);
++}
++
++static int rk_udphy_dp_phy_init(struct phy *phy)
++{
++ struct rk_udphy *udphy = phy_get_drvdata(phy);
++
++ mutex_lock(&udphy->mutex);
++
++ udphy->dp_in_use = true;
++ rk_udphy_dp_hpd_event_trigger(udphy, udphy->dp_sink_hpd_cfg);
++
++ mutex_unlock(&udphy->mutex);
++
++ return 0;
++}
++
++static int rk_udphy_dp_phy_exit(struct phy *phy)
++{
++ struct rk_udphy *udphy = phy_get_drvdata(phy);
++
++ mutex_lock(&udphy->mutex);
++ udphy->dp_in_use = false;
++ mutex_unlock(&udphy->mutex);
++ return 0;
++}
++
++static int rk_udphy_dp_phy_power_on(struct phy *phy)
++{
++ struct rk_udphy *udphy = phy_get_drvdata(phy);
++ int ret, dp_lanes;
++
++ mutex_lock(&udphy->mutex);
++
++ dp_lanes = rk_udphy_dplane_get(udphy);
++ phy_set_bus_width(phy, dp_lanes);
++
++ ret = rk_udphy_power_on(udphy, UDPHY_MODE_DP);
++ if (ret)
++ goto unlock;
++
++ rk_udphy_dplane_enable(udphy, dp_lanes);
++
++ rk_udphy_dplane_select(udphy);
++
++unlock:
++ mutex_unlock(&udphy->mutex);
++ /*
++ * If data send by aux channel too fast after phy power on,
++ * the aux may be not ready which will cause aux error. Adding
++ * delay to avoid this issue.
++ */
++ usleep_range(10000, 11000);
++ return ret;
++}
++
++static int rk_udphy_dp_phy_power_off(struct phy *phy)
++{
++ struct rk_udphy *udphy = phy_get_drvdata(phy);
++
++ mutex_lock(&udphy->mutex);
++ rk_udphy_dplane_enable(udphy, 0);
++ rk_udphy_power_off(udphy, UDPHY_MODE_DP);
++ mutex_unlock(&udphy->mutex);
++
++ return 0;
++}
++
++static int rk_udphy_dp_phy_verify_link_rate(unsigned int link_rate)
++{
++ switch (link_rate) {
++ case 1620:
++ case 2700:
++ case 5400:
++ case 8100:
++ break;
++
++ default:
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static int rk_udphy_dp_phy_verify_config(struct rk_udphy *udphy,
++ struct phy_configure_opts_dp *dp)
++{
++ int i, ret;
++
++ /* If changing link rate was required, verify it's supported. */
++ ret = rk_udphy_dp_phy_verify_link_rate(dp->link_rate);
++ if (ret)
++ return ret;
++
++ /* Verify lane count. */
++ switch (dp->lanes) {
++ case 1:
++ case 2:
++ case 4:
++ /* valid lane count. */
++ break;
++
++ default:
++ return -EINVAL;
++ }
++
++ /*
++ * If changing voltages is required, check swing and pre-emphasis
++ * levels, per-lane.
++ */
++ if (dp->set_voltages) {
++ /* Lane count verified previously. */
++ for (i = 0; i < dp->lanes; i++) {
++ if (dp->voltage[i] > 3 || dp->pre[i] > 3)
++ return -EINVAL;
++
++ /*
++ * Sum of voltage swing and pre-emphasis levels cannot
++ * exceed 3.
++ */
++ if (dp->voltage[i] + dp->pre[i] > 3)
++ return -EINVAL;
++ }
++ }
++
++ return 0;
++}
++
++static void rk_udphy_dp_set_voltage(struct rk_udphy *udphy, u8 bw,
++ u32 voltage, u32 pre, u32 lane)
++{
++ const struct rk_udphy_cfg *cfg = udphy->cfgs;
++ const struct rk_udphy_dp_tx_drv_ctrl (*dp_ctrl)[4];
++ u32 offset = 0x800 * lane;
++ u32 val;
++
++ if (udphy->mux)
++ dp_ctrl = cfg->dp_tx_ctrl_cfg_typec[bw];
++ else
++ dp_ctrl = cfg->dp_tx_ctrl_cfg[bw];
++
++ val = dp_ctrl[voltage][pre].trsv_reg0204;
++ regmap_write(udphy->pma_regmap, 0x0810 + offset, val);
++
++ val = dp_ctrl[voltage][pre].trsv_reg0205;
++ regmap_write(udphy->pma_regmap, 0x0814 + offset, val);
++
++ val = dp_ctrl[voltage][pre].trsv_reg0206;
++ regmap_write(udphy->pma_regmap, 0x0818 + offset, val);
++
++ val = dp_ctrl[voltage][pre].trsv_reg0207;
++ regmap_write(udphy->pma_regmap, 0x081c + offset, val);
++}
++
++static int rk_udphy_dp_phy_configure(struct phy *phy,
++ union phy_configure_opts *opts)
++{
++ struct rk_udphy *udphy = phy_get_drvdata(phy);
++ struct phy_configure_opts_dp *dp = &opts->dp;
++ u32 i, val, lane;
++ int ret;
++
++ ret = rk_udphy_dp_phy_verify_config(udphy, dp);
++ if (ret)
++ return ret;
++
++ if (dp->set_rate) {
++ regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET,
++ CMN_DP_CMN_RSTN, FIELD_PREP(CMN_DP_CMN_RSTN, 0x0));
++
++ switch (dp->link_rate) {
++ case 1620:
++ udphy->bw = DP_BW_RBR;
++ break;
++
++ case 2700:
++ udphy->bw = DP_BW_HBR;
++ break;
++
++ case 5400:
++ udphy->bw = DP_BW_HBR2;
++ break;
++
++ case 8100:
++ udphy->bw = DP_BW_HBR3;
++ break;
++
++ default:
++ return -EINVAL;
++ }
++
++ regmap_update_bits(udphy->pma_regmap, CMN_DP_LINK_OFFSET, CMN_DP_TX_LINK_BW,
++ FIELD_PREP(CMN_DP_TX_LINK_BW, udphy->bw));
++ regmap_update_bits(udphy->pma_regmap, CMN_SSC_EN_OFFSET, CMN_ROPLL_SSC_EN,
++ FIELD_PREP(CMN_ROPLL_SSC_EN, dp->ssc));
++ regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET, CMN_DP_CMN_RSTN,
++ FIELD_PREP(CMN_DP_CMN_RSTN, 0x1));
++
++ ret = regmap_read_poll_timeout(udphy->pma_regmap, CMN_ANA_ROPLL_DONE_OFFSET, val,
++ FIELD_GET(CMN_ANA_ROPLL_LOCK_DONE, val) &&
++ FIELD_GET(CMN_ANA_ROPLL_AFC_DONE, val),
++ 0, 1000);
++ if (ret) {
++ dev_err(udphy->dev, "ROPLL is not lock, set_rate failed\n");
++ return ret;
++ }
++ }
++
++ if (dp->set_voltages) {
++ for (i = 0; i < dp->lanes; i++) {
++ lane = udphy->dp_lane_sel[i];
++ switch (dp->link_rate) {
++ case 1620:
++ case 2700:
++ regmap_update_bits(udphy->pma_regmap,
++ TRSV_ANA_TX_CLK_OFFSET_N(lane),
++ LN_ANA_TX_SER_TXCLK_INV,
++ FIELD_PREP(LN_ANA_TX_SER_TXCLK_INV,
++ udphy->lane_mux_sel[lane]));
++ break;
++
++ case 5400:
++ case 8100:
++ regmap_update_bits(udphy->pma_regmap,
++ TRSV_ANA_TX_CLK_OFFSET_N(lane),
++ LN_ANA_TX_SER_TXCLK_INV,
++ FIELD_PREP(LN_ANA_TX_SER_TXCLK_INV, 0x0));
++ break;
++ }
++
++ rk_udphy_dp_set_voltage(udphy, udphy->bw, dp->voltage[i],
++ dp->pre[i], lane);
++ }
++ }
++
++ return 0;
++}
++
++static const struct phy_ops rk_udphy_dp_phy_ops = {
++ .init = rk_udphy_dp_phy_init,
++ .exit = rk_udphy_dp_phy_exit,
++ .power_on = rk_udphy_dp_phy_power_on,
++ .power_off = rk_udphy_dp_phy_power_off,
++ .configure = rk_udphy_dp_phy_configure,
++ .owner = THIS_MODULE,
++};
++
++static int rk_udphy_usb3_phy_init(struct phy *phy)
++{
++ struct rk_udphy *udphy = phy_get_drvdata(phy);
++ int ret;
++
++ mutex_lock(&udphy->mutex);
++ /* DP only or high-speed, disable U3 port */
++ if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs) {
++ rk_udphy_u3_port_disable(udphy, true);
++ goto unlock;
++ }
++
++ ret = rk_udphy_power_on(udphy, UDPHY_MODE_USB);
++
++unlock:
++ mutex_unlock(&udphy->mutex);
++ return ret;
++}
++
++static int rk_udphy_usb3_phy_exit(struct phy *phy)
++{
++ struct rk_udphy *udphy = phy_get_drvdata(phy);
++
++ mutex_lock(&udphy->mutex);
++ /* DP only or high-speed */
++ if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs)
++ goto unlock;
++
++ rk_udphy_power_off(udphy, UDPHY_MODE_USB);
++
++unlock:
++ mutex_unlock(&udphy->mutex);
++ return 0;
++}
++
++static const struct phy_ops rk_udphy_usb3_phy_ops = {
++ .init = rk_udphy_usb3_phy_init,
++ .exit = rk_udphy_usb3_phy_exit,
++ .owner = THIS_MODULE,
++};
++
++static int rk_udphy_typec_mux_set(struct typec_mux_dev *mux,
++ struct typec_mux_state *state)
++{
++ struct rk_udphy *udphy = typec_mux_get_drvdata(mux);
++ u8 mode;
++
++ mutex_lock(&udphy->mutex);
++
++ switch (state->mode) {
++ case TYPEC_DP_STATE_C:
++ case TYPEC_DP_STATE_E:
++ udphy->lane_mux_sel[0] = PHY_LANE_MUX_DP;
++ udphy->lane_mux_sel[1] = PHY_LANE_MUX_DP;
++ udphy->lane_mux_sel[2] = PHY_LANE_MUX_DP;
++ udphy->lane_mux_sel[3] = PHY_LANE_MUX_DP;
++ mode = UDPHY_MODE_DP;
++ break;
++
++ case TYPEC_DP_STATE_D:
++ default:
++ if (udphy->flip) {
++ udphy->lane_mux_sel[0] = PHY_LANE_MUX_DP;
++ udphy->lane_mux_sel[1] = PHY_LANE_MUX_DP;
++ udphy->lane_mux_sel[2] = PHY_LANE_MUX_USB;
++ udphy->lane_mux_sel[3] = PHY_LANE_MUX_USB;
++ } else {
++ udphy->lane_mux_sel[0] = PHY_LANE_MUX_USB;
++ udphy->lane_mux_sel[1] = PHY_LANE_MUX_USB;
++ udphy->lane_mux_sel[2] = PHY_LANE_MUX_DP;
++ udphy->lane_mux_sel[3] = PHY_LANE_MUX_DP;
++ }
++ mode = UDPHY_MODE_DP_USB;
++ break;
++ }
++
++ if (state->alt && state->alt->svid == USB_TYPEC_DP_SID) {
++ struct typec_displayport_data *data = state->data;
++
++ if (!data) {
++ rk_udphy_dp_hpd_event_trigger(udphy, false);
++ } else if (data->status & DP_STATUS_IRQ_HPD) {
++ rk_udphy_dp_hpd_event_trigger(udphy, false);
++ usleep_range(750, 800);
++ rk_udphy_dp_hpd_event_trigger(udphy, true);
++ } else if (data->status & DP_STATUS_HPD_STATE) {
++ if (udphy->mode != mode) {
++ udphy->mode = mode;
++ udphy->mode_change = true;
++ }
++ rk_udphy_dp_hpd_event_trigger(udphy, true);
++ } else {
++ rk_udphy_dp_hpd_event_trigger(udphy, false);
++ }
++ }
++
++ mutex_unlock(&udphy->mutex);
++ return 0;
++}
++
++static void rk_udphy_typec_mux_unregister(void *data)
++{
++ struct rk_udphy *udphy = data;
++
++ typec_mux_unregister(udphy->mux);
++}
++
++static int rk_udphy_setup_typec_mux(struct rk_udphy *udphy)
++{
++ struct typec_mux_desc mux_desc = {};
++
++ mux_desc.drvdata = udphy;
++ mux_desc.fwnode = dev_fwnode(udphy->dev);
++ mux_desc.set = rk_udphy_typec_mux_set;
++
++ udphy->mux = typec_mux_register(udphy->dev, &mux_desc);
++ if (IS_ERR(udphy->mux)) {
++ dev_err(udphy->dev, "Error register typec mux: %ld\n",
++ PTR_ERR(udphy->mux));
++ return PTR_ERR(udphy->mux);
++ }
++
++ return devm_add_action_or_reset(udphy->dev, rk_udphy_typec_mux_unregister,
++ udphy);
++}
++
++static const struct regmap_config rk_udphy_pma_regmap_cfg = {
++ .reg_bits = 32,
++ .reg_stride = 4,
++ .val_bits = 32,
++ .fast_io = true,
++ .max_register = 0x20dc,
++};
++
++static struct phy *rk_udphy_phy_xlate(struct device *dev, struct of_phandle_args *args)
++{
++ struct rk_udphy *udphy = dev_get_drvdata(dev);
++
++ if (args->args_count == 0)
++ return ERR_PTR(-EINVAL);
++
++ switch (args->args[0]) {
++ case PHY_TYPE_USB3:
++ return udphy->phy_u3;
++ case PHY_TYPE_DP:
++ return udphy->phy_dp;
++ }
++
++ return ERR_PTR(-EINVAL);
++}
++
++static int rk_udphy_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ struct phy_provider *phy_provider;
++ struct resource *res;
++ struct rk_udphy *udphy;
++ void __iomem *base;
++ int id, ret;
++
++ udphy = devm_kzalloc(dev, sizeof(*udphy), GFP_KERNEL);
++ if (!udphy)
++ return -ENOMEM;
++
++ udphy->cfgs = device_get_match_data(dev);
++ if (!udphy->cfgs)
++ return dev_err_probe(dev, -EINVAL, "missing match data\n");
++
++ base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
++ if (IS_ERR(base))
++ return PTR_ERR(base);
++
++ /* find the phy-id from the io address */
++ udphy->id = -ENODEV;
++ for (id = 0; id < udphy->cfgs->num_phys; id++) {
++ if (res->start == udphy->cfgs->phy_ids[id]) {
++ udphy->id = id;
++ break;
++ }
++ }
++
++ if (udphy->id < 0)
++ return dev_err_probe(dev, -ENODEV, "no matching device found\n");
++
++ udphy->pma_regmap = devm_regmap_init_mmio(dev, base + UDPHY_PMA,
++ &rk_udphy_pma_regmap_cfg);
++ if (IS_ERR(udphy->pma_regmap))
++ return PTR_ERR(udphy->pma_regmap);
++
++ udphy->dev = dev;
++ ret = rk_udphy_parse_dt(udphy);
++ if (ret)
++ return ret;
++
++ ret = rk_udphy_get_initial_status(udphy);
++ if (ret)
++ return ret;
++
++ mutex_init(&udphy->mutex);
++ platform_set_drvdata(pdev, udphy);
++
++ if (device_property_present(dev, "orientation-switch")) {
++ ret = rk_udphy_setup_orien_switch(udphy);
++ if (ret)
++ return ret;
++ }
++
++ if (device_property_present(dev, "mode-switch")) {
++ ret = rk_udphy_setup_typec_mux(udphy);
++ if (ret)
++ return ret;
++ }
++
++ udphy->phy_u3 = devm_phy_create(dev, dev->of_node, &rk_udphy_usb3_phy_ops);
++ if (IS_ERR(udphy->phy_u3)) {
++ ret = PTR_ERR(udphy->phy_u3);
++ return dev_err_probe(dev, ret, "failed to create USB3 phy\n");
++ }
++ phy_set_drvdata(udphy->phy_u3, udphy);
++
++ udphy->phy_dp = devm_phy_create(dev, dev->of_node, &rk_udphy_dp_phy_ops);
++ if (IS_ERR(udphy->phy_dp)) {
++ ret = PTR_ERR(udphy->phy_dp);
++ return dev_err_probe(dev, ret, "failed to create DP phy\n");
++ }
++ phy_set_bus_width(udphy->phy_dp, rk_udphy_dplane_get(udphy));
++ udphy->phy_dp->attrs.max_link_rate = 8100;
++ phy_set_drvdata(udphy->phy_dp, udphy);
++
++ phy_provider = devm_of_phy_provider_register(dev, rk_udphy_phy_xlate);
++ if (IS_ERR(phy_provider)) {
++ ret = PTR_ERR(phy_provider);
++ return dev_err_probe(dev, ret, "failed to register phy provider\n");
++ }
++
++ return 0;
++}
++
++static int __maybe_unused rk_udphy_resume(struct device *dev)
++{
++ struct rk_udphy *udphy = dev_get_drvdata(dev);
++
++ if (udphy->dp_sink_hpd_sel)
++ rk_udphy_dp_hpd_event_trigger(udphy, udphy->dp_sink_hpd_cfg);
++
++ return 0;
++}
++
++static const struct dev_pm_ops rk_udphy_pm_ops = {
++ SET_LATE_SYSTEM_SLEEP_PM_OPS(NULL, rk_udphy_resume)
++};
++
++static const char * const rk_udphy_rst_list[] = {
++ "init", "cmn", "lane", "pcs_apb", "pma_apb"
++};
++
++static const struct rk_udphy_cfg rk3588_udphy_cfgs = {
++ .num_phys = 2,
++ .phy_ids = {
++ 0xfed80000,
++ 0xfed90000,
++ },
++ .num_rsts = ARRAY_SIZE(rk_udphy_rst_list),
++ .rst_list = rk_udphy_rst_list,
++ .grfcfg = {
++ /* u2phy-grf */
++ .bvalid_phy_con = RK_UDPHY_GEN_GRF_REG(0x0008, 1, 0, 0x2, 0x3),
++ .bvalid_grf_con = RK_UDPHY_GEN_GRF_REG(0x0010, 3, 2, 0x2, 0x3),
++
++ /* usb-grf */
++ .usb3otg0_cfg = RK_UDPHY_GEN_GRF_REG(0x001c, 15, 0, 0x1100, 0x0188),
++ .usb3otg1_cfg = RK_UDPHY_GEN_GRF_REG(0x0034, 15, 0, 0x1100, 0x0188),
++
++ /* usbdpphy-grf */
++ .low_pwrn = RK_UDPHY_GEN_GRF_REG(0x0004, 13, 13, 0, 1),
++ .rx_lfps = RK_UDPHY_GEN_GRF_REG(0x0004, 14, 14, 0, 1),
++ },
++ .vogrfcfg = {
++ {
++ .hpd_trigger = RK_UDPHY_GEN_GRF_REG(0x0000, 11, 10, 1, 3),
++ .dp_lane_reg = 0x0000,
++ },
++ {
++ .hpd_trigger = RK_UDPHY_GEN_GRF_REG(0x0008, 11, 10, 1, 3),
++ .dp_lane_reg = 0x0008,
++ },
++ },
++ .dp_tx_ctrl_cfg = {
++ rk3588_dp_tx_drv_ctrl_rbr_hbr,
++ rk3588_dp_tx_drv_ctrl_rbr_hbr,
++ rk3588_dp_tx_drv_ctrl_hbr2,
++ rk3588_dp_tx_drv_ctrl_hbr3,
++ },
++ .dp_tx_ctrl_cfg_typec = {
++ rk3588_dp_tx_drv_ctrl_rbr_hbr_typec,
++ rk3588_dp_tx_drv_ctrl_rbr_hbr_typec,
++ rk3588_dp_tx_drv_ctrl_hbr2,
++ rk3588_dp_tx_drv_ctrl_hbr3,
++ },
++};
++
++static const struct of_device_id rk_udphy_dt_match[] = {
++ {
++ .compatible = "rockchip,rk3588-usbdp-phy",
++ .data = &rk3588_udphy_cfgs
++ },
++ { /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, rk_udphy_dt_match);
++
++static struct platform_driver rk_udphy_driver = {
++ .probe = rk_udphy_probe,
++ .driver = {
++ .name = "rockchip-usbdp-phy",
++ .of_match_table = rk_udphy_dt_match,
++ .pm = &rk_udphy_pm_ops,
++ },
++};
++module_platform_driver(rk_udphy_driver);
++
++MODULE_AUTHOR("Frank Wang <frank.wang@rock-chips.com>");
++MODULE_AUTHOR("Zhang Yubing <yubing.zhang@rock-chips.com>");
++MODULE_DESCRIPTION("Rockchip USBDP Combo PHY driver");
++MODULE_LICENSE("GPL");
projects / openwrt / openwrt.git / commitdiff