[PATCH v5 02/10] phy: rockchip: add usbdp combo phy driver
From: Sebastian Reichel
Date: Mon Apr 08 2024 - 18:53:11 EST
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@xxxxxxxxx>
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
Co-developed-by: Zhang Yubing <yubing.zhang@xxxxxxxxxxxxxx>
Signed-off-by: Zhang Yubing <yubing.zhang@xxxxxxxxxxxxxx>
Co-developed-by: Frank Wang <frank.wang@xxxxxxxxxxxxxx>
Signed-off-by: Frank Wang <frank.wang@xxxxxxxxxxxxxx>
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
---
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
diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig
index a34f67bb7e61..c3d62243b474 100644
--- a/drivers/phy/rockchip/Kconfig
+++ b/drivers/phy/rockchip/Kconfig
@@ -115,3 +115,15 @@ 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
diff --git a/drivers/phy/rockchip/Makefile b/drivers/phy/rockchip/Makefile
index 3d911304e654..010a824e32ce 100644
--- a/drivers/phy/rockchip/Makefile
+++ b/drivers/phy/rockchip/Makefile
@@ -12,3 +12,4 @@ obj-$(CONFIG_PHY_ROCKCHIP_SAMSUNG_HDPTX) += phy-rockchip-samsung-hdptx.o
obj-$(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
diff --git a/drivers/phy/rockchip/phy-rockchip-usbdp.c b/drivers/phy/rockchip/phy-rockchip-usbdp.c
new file mode 100644
index 000000000000..32f306459182
--- /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, const 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@xxxxxxxxxxxxxx>");
+MODULE_AUTHOR("Zhang Yubing <yubing.zhang@xxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Rockchip USBDP Combo PHY driver");
+MODULE_LICENSE("GPL");
--
2.43.0