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kernel/drivers/phy/rockchip/phy-rockchip-usbdp.c

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// 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 = 0;
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@rock-chips.com>");
MODULE_AUTHOR("Zhang Yubing <yubing.zhang@rock-chips.com>");
MODULE_DESCRIPTION("Rockchip USBDP Combo PHY driver");
MODULE_LICENSE("GPL");
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