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usb: typec: Add support for Parade PS8830 Type-C Retimer
The Parade PS8830 is a USB4, DisplayPort and Thunderbolt 4 retimer, controlled over I2C. It usually sits between a USB/DisplayPort PHY and the Type-C connector, and provides orientation and altmode handling. The boards that use this retimer are the ones featuring the Qualcomm Snapdragon X Elite SoCs. Add a driver with support for the following modes: - DisplayPort 4-lanes - DisplayPort 2-lanes + USB3 - USB3 There is another variant of this retimer which is called PS8833. It seems to be really similar to the PS8830, so future-proof this driver by naming it ps883x. Signed-off-by: Abel Vesa <abel.vesa@linaro.org> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20250206-x1e80100-ps8830-v6-2-60b1e49cfa8d@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Abel Vesa
committed by
Greg Kroah-Hartman
Greg Kroah-Hartman
parent
d73ddefaf9
commit
257a087c8b
@@ -56,6 +56,16 @@ config TYPEC_MUX_NB7VPQ904M
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Say Y or M if your system has a On Semiconductor NB7VPQ904M Type-C
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Say Y or M if your system has a On Semiconductor NB7VPQ904M Type-C
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redriver chip found on some devices with a Type-C port.
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redriver chip found on some devices with a Type-C port.
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config TYPEC_MUX_PS883X
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tristate "Parade PS883x Type-C retimer driver"
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depends on I2C
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depends on DRM || DRM=n
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select DRM_AUX_BRIDGE if DRM_BRIDGE && OF
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select REGMAP_I2C
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help
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Say Y or M if your system has a Parade PS883x Type-C retimer chip
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found on some devices with a Type-C port.
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config TYPEC_MUX_PTN36502
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config TYPEC_MUX_PTN36502
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tristate "NXP PTN36502 Type-C redriver driver"
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tristate "NXP PTN36502 Type-C redriver driver"
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depends on I2C
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depends on I2C
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@@ -6,6 +6,7 @@ obj-$(CONFIG_TYPEC_MUX_PI3USB30532) += pi3usb30532.o
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obj-$(CONFIG_TYPEC_MUX_INTEL_PMC) += intel_pmc_mux.o
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obj-$(CONFIG_TYPEC_MUX_INTEL_PMC) += intel_pmc_mux.o
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obj-$(CONFIG_TYPEC_MUX_IT5205) += it5205.o
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obj-$(CONFIG_TYPEC_MUX_IT5205) += it5205.o
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obj-$(CONFIG_TYPEC_MUX_NB7VPQ904M) += nb7vpq904m.o
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obj-$(CONFIG_TYPEC_MUX_NB7VPQ904M) += nb7vpq904m.o
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obj-$(CONFIG_TYPEC_MUX_PS883X) += ps883x.o
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obj-$(CONFIG_TYPEC_MUX_PTN36502) += ptn36502.o
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obj-$(CONFIG_TYPEC_MUX_PTN36502) += ptn36502.o
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obj-$(CONFIG_TYPEC_MUX_TUSB1046) += tusb1046.o
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obj-$(CONFIG_TYPEC_MUX_TUSB1046) += tusb1046.o
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obj-$(CONFIG_TYPEC_MUX_WCD939X_USBSS) += wcd939x-usbss.o
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obj-$(CONFIG_TYPEC_MUX_WCD939X_USBSS) += wcd939x-usbss.o
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437
drivers/usb/typec/mux/ps883x.c
Normal file
437
drivers/usb/typec/mux/ps883x.c
Normal file
@@ -0,0 +1,437 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Parade ps883x usb retimer driver
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*
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* Copyright (C) 2024 Linaro Ltd.
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*/
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#include <drm/bridge/aux-bridge.h>
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#include <linux/clk.h>
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#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <linux/usb/typec_altmode.h>
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#include <linux/usb/typec_dp.h>
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#include <linux/usb/typec_mux.h>
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#include <linux/usb/typec_retimer.h>
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#define REG_USB_PORT_CONN_STATUS_0 0x00
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#define CONN_STATUS_0_CONNECTION_PRESENT BIT(0)
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#define CONN_STATUS_0_ORIENTATION_REVERSED BIT(1)
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#define CONN_STATUS_0_USB_3_1_CONNECTED BIT(5)
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#define REG_USB_PORT_CONN_STATUS_1 0x01
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#define CONN_STATUS_1_DP_CONNECTED BIT(0)
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#define CONN_STATUS_1_DP_SINK_REQUESTED BIT(1)
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#define CONN_STATUS_1_DP_PIN_ASSIGNMENT_C_D BIT(2)
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#define CONN_STATUS_1_DP_HPD_LEVEL BIT(7)
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#define REG_USB_PORT_CONN_STATUS_2 0x02
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struct ps883x_retimer {
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struct i2c_client *client;
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struct gpio_desc *reset_gpio;
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struct regmap *regmap;
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struct typec_switch_dev *sw;
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struct typec_retimer *retimer;
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struct clk *xo_clk;
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struct regulator *vdd_supply;
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struct regulator *vdd33_supply;
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struct regulator *vdd33_cap_supply;
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struct regulator *vddat_supply;
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struct regulator *vddar_supply;
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struct regulator *vddio_supply;
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struct typec_switch *typec_switch;
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struct typec_mux *typec_mux;
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struct mutex lock; /* protect non-concurrent retimer & switch */
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enum typec_orientation orientation;
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unsigned long mode;
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unsigned int svid;
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};
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static void ps883x_configure(struct ps883x_retimer *retimer, int cfg0,
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int cfg1, int cfg2)
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{
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regmap_write(retimer->regmap, REG_USB_PORT_CONN_STATUS_0, cfg0);
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regmap_write(retimer->regmap, REG_USB_PORT_CONN_STATUS_1, cfg1);
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regmap_write(retimer->regmap, REG_USB_PORT_CONN_STATUS_2, cfg2);
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}
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static int ps883x_set(struct ps883x_retimer *retimer)
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{
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int cfg0 = CONN_STATUS_0_CONNECTION_PRESENT;
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int cfg1 = 0x00;
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int cfg2 = 0x00;
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if (retimer->orientation == TYPEC_ORIENTATION_NONE ||
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retimer->mode == TYPEC_STATE_SAFE) {
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ps883x_configure(retimer, cfg0, cfg1, cfg2);
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return 0;
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}
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if (retimer->mode != TYPEC_STATE_USB && retimer->svid != USB_TYPEC_DP_SID)
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return -EINVAL;
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if (retimer->orientation == TYPEC_ORIENTATION_REVERSE)
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cfg0 |= CONN_STATUS_0_ORIENTATION_REVERSED;
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switch (retimer->mode) {
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case TYPEC_STATE_USB:
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cfg0 |= CONN_STATUS_0_USB_3_1_CONNECTED;
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break;
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case TYPEC_DP_STATE_C:
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cfg1 = CONN_STATUS_1_DP_CONNECTED |
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CONN_STATUS_1_DP_SINK_REQUESTED |
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CONN_STATUS_1_DP_PIN_ASSIGNMENT_C_D |
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CONN_STATUS_1_DP_HPD_LEVEL;
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break;
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case TYPEC_DP_STATE_D:
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cfg0 |= CONN_STATUS_0_USB_3_1_CONNECTED;
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cfg1 = CONN_STATUS_1_DP_CONNECTED |
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CONN_STATUS_1_DP_SINK_REQUESTED |
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CONN_STATUS_1_DP_PIN_ASSIGNMENT_C_D |
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CONN_STATUS_1_DP_HPD_LEVEL;
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break;
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case TYPEC_DP_STATE_E:
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cfg1 = CONN_STATUS_1_DP_CONNECTED |
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CONN_STATUS_1_DP_HPD_LEVEL;
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break;
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default:
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return -EOPNOTSUPP;
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}
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ps883x_configure(retimer, cfg0, cfg1, cfg2);
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return 0;
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}
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static int ps883x_sw_set(struct typec_switch_dev *sw,
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enum typec_orientation orientation)
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{
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struct ps883x_retimer *retimer = typec_switch_get_drvdata(sw);
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int ret = 0;
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ret = typec_switch_set(retimer->typec_switch, orientation);
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if (ret)
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return ret;
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mutex_lock(&retimer->lock);
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if (retimer->orientation != orientation) {
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retimer->orientation = orientation;
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ret = ps883x_set(retimer);
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}
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mutex_unlock(&retimer->lock);
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return ret;
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}
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static int ps883x_retimer_set(struct typec_retimer *rtmr,
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struct typec_retimer_state *state)
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{
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struct ps883x_retimer *retimer = typec_retimer_get_drvdata(rtmr);
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struct typec_mux_state mux_state;
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int ret = 0;
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mutex_lock(&retimer->lock);
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if (state->mode != retimer->mode) {
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retimer->mode = state->mode;
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if (state->alt)
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retimer->svid = state->alt->svid;
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else
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retimer->svid = 0;
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ret = ps883x_set(retimer);
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}
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mutex_unlock(&retimer->lock);
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if (ret)
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return ret;
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mux_state.alt = state->alt;
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mux_state.data = state->data;
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mux_state.mode = state->mode;
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return typec_mux_set(retimer->typec_mux, &mux_state);
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}
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static int ps883x_enable_vregs(struct ps883x_retimer *retimer)
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{
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struct device *dev = &retimer->client->dev;
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int ret;
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ret = regulator_enable(retimer->vdd33_supply);
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if (ret) {
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dev_err(dev, "cannot enable VDD 3.3V regulator: %d\n", ret);
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return ret;
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}
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ret = regulator_enable(retimer->vdd33_cap_supply);
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if (ret) {
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dev_err(dev, "cannot enable VDD 3.3V CAP regulator: %d\n", ret);
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goto err_vdd33_disable;
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}
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usleep_range(4000, 10000);
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ret = regulator_enable(retimer->vdd_supply);
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if (ret) {
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dev_err(dev, "cannot enable VDD regulator: %d\n", ret);
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goto err_vdd33_cap_disable;
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}
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ret = regulator_enable(retimer->vddar_supply);
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if (ret) {
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dev_err(dev, "cannot enable VDD AR regulator: %d\n", ret);
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goto err_vdd_disable;
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}
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ret = regulator_enable(retimer->vddat_supply);
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if (ret) {
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dev_err(dev, "cannot enable VDD AT regulator: %d\n", ret);
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goto err_vddar_disable;
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}
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ret = regulator_enable(retimer->vddio_supply);
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if (ret) {
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dev_err(dev, "cannot enable VDD IO regulator: %d\n", ret);
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goto err_vddat_disable;
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}
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return 0;
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err_vddat_disable:
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regulator_disable(retimer->vddat_supply);
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err_vddar_disable:
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regulator_disable(retimer->vddar_supply);
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err_vdd_disable:
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regulator_disable(retimer->vdd_supply);
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err_vdd33_cap_disable:
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regulator_disable(retimer->vdd33_cap_supply);
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err_vdd33_disable:
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regulator_disable(retimer->vdd33_supply);
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return ret;
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}
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static void ps883x_disable_vregs(struct ps883x_retimer *retimer)
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{
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regulator_disable(retimer->vddio_supply);
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regulator_disable(retimer->vddat_supply);
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regulator_disable(retimer->vddar_supply);
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regulator_disable(retimer->vdd_supply);
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regulator_disable(retimer->vdd33_cap_supply);
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regulator_disable(retimer->vdd33_supply);
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}
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static int ps883x_get_vregs(struct ps883x_retimer *retimer)
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{
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struct device *dev = &retimer->client->dev;
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retimer->vdd_supply = devm_regulator_get(dev, "vdd");
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if (IS_ERR(retimer->vdd_supply))
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return dev_err_probe(dev, PTR_ERR(retimer->vdd_supply),
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"failed to get VDD\n");
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retimer->vdd33_supply = devm_regulator_get(dev, "vdd33");
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if (IS_ERR(retimer->vdd33_supply))
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return dev_err_probe(dev, PTR_ERR(retimer->vdd33_supply),
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"failed to get VDD 3.3V\n");
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retimer->vdd33_cap_supply = devm_regulator_get(dev, "vdd33-cap");
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if (IS_ERR(retimer->vdd33_cap_supply))
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return dev_err_probe(dev, PTR_ERR(retimer->vdd33_cap_supply),
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"failed to get VDD CAP 3.3V\n");
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retimer->vddat_supply = devm_regulator_get(dev, "vddat");
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if (IS_ERR(retimer->vddat_supply))
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return dev_err_probe(dev, PTR_ERR(retimer->vddat_supply),
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"failed to get VDD AT\n");
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retimer->vddar_supply = devm_regulator_get(dev, "vddar");
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if (IS_ERR(retimer->vddar_supply))
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return dev_err_probe(dev, PTR_ERR(retimer->vddar_supply),
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"failed to get VDD AR\n");
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retimer->vddio_supply = devm_regulator_get(dev, "vddio");
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if (IS_ERR(retimer->vddio_supply))
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return dev_err_probe(dev, PTR_ERR(retimer->vddio_supply),
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"failed to get VDD IO\n");
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return 0;
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}
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static const struct regmap_config ps883x_retimer_regmap = {
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.max_register = 0x1f,
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.reg_bits = 8,
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.val_bits = 8,
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};
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static int ps883x_retimer_probe(struct i2c_client *client)
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{
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struct device *dev = &client->dev;
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struct typec_switch_desc sw_desc = { };
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struct typec_retimer_desc rtmr_desc = { };
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struct ps883x_retimer *retimer;
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int ret;
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retimer = devm_kzalloc(dev, sizeof(*retimer), GFP_KERNEL);
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if (!retimer)
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return -ENOMEM;
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retimer->client = client;
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mutex_init(&retimer->lock);
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retimer->regmap = devm_regmap_init_i2c(client, &ps883x_retimer_regmap);
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if (IS_ERR(retimer->regmap))
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return dev_err_probe(dev, PTR_ERR(retimer->regmap),
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"failed to allocate register map\n");
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ret = ps883x_get_vregs(retimer);
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if (ret)
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return ret;
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|
||||||
|
retimer->xo_clk = devm_clk_get(dev, NULL);
|
||||||
|
if (IS_ERR(retimer->xo_clk))
|
||||||
|
return dev_err_probe(dev, PTR_ERR(retimer->xo_clk),
|
||||||
|
"failed to get xo clock\n");
|
||||||
|
|
||||||
|
retimer->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_ASIS);
|
||||||
|
if (IS_ERR(retimer->reset_gpio))
|
||||||
|
return dev_err_probe(dev, PTR_ERR(retimer->reset_gpio),
|
||||||
|
"failed to get reset gpio\n");
|
||||||
|
|
||||||
|
retimer->typec_switch = typec_switch_get(dev);
|
||||||
|
if (IS_ERR(retimer->typec_switch))
|
||||||
|
return dev_err_probe(dev, PTR_ERR(retimer->typec_switch),
|
||||||
|
"failed to acquire orientation-switch\n");
|
||||||
|
|
||||||
|
retimer->typec_mux = typec_mux_get(dev);
|
||||||
|
if (IS_ERR(retimer->typec_mux)) {
|
||||||
|
ret = dev_err_probe(dev, PTR_ERR(retimer->typec_mux),
|
||||||
|
"failed to acquire mode-mux\n");
|
||||||
|
goto err_switch_put;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = drm_aux_bridge_register(dev);
|
||||||
|
if (ret)
|
||||||
|
goto err_mux_put;
|
||||||
|
|
||||||
|
ret = ps883x_enable_vregs(retimer);
|
||||||
|
if (ret)
|
||||||
|
goto err_mux_put;
|
||||||
|
|
||||||
|
ret = clk_prepare_enable(retimer->xo_clk);
|
||||||
|
if (ret) {
|
||||||
|
dev_err(dev, "failed to enable XO: %d\n", ret);
|
||||||
|
goto err_vregs_disable;
|
||||||
|
}
|
||||||
|
|
||||||
|
sw_desc.drvdata = retimer;
|
||||||
|
sw_desc.fwnode = dev_fwnode(dev);
|
||||||
|
sw_desc.set = ps883x_sw_set;
|
||||||
|
|
||||||
|
retimer->sw = typec_switch_register(dev, &sw_desc);
|
||||||
|
if (IS_ERR(retimer->sw)) {
|
||||||
|
ret = PTR_ERR(retimer->sw);
|
||||||
|
dev_err(dev, "failed to register typec switch: %d\n", ret);
|
||||||
|
goto err_clk_disable;
|
||||||
|
}
|
||||||
|
|
||||||
|
rtmr_desc.drvdata = retimer;
|
||||||
|
rtmr_desc.fwnode = dev_fwnode(dev);
|
||||||
|
rtmr_desc.set = ps883x_retimer_set;
|
||||||
|
|
||||||
|
retimer->retimer = typec_retimer_register(dev, &rtmr_desc);
|
||||||
|
if (IS_ERR(retimer->retimer)) {
|
||||||
|
ret = PTR_ERR(retimer->retimer);
|
||||||
|
dev_err(dev, "failed to register typec retimer: %d\n", ret);
|
||||||
|
goto err_switch_unregister;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* skip resetting if already configured */
|
||||||
|
if (regmap_test_bits(retimer->regmap, REG_USB_PORT_CONN_STATUS_0,
|
||||||
|
CONN_STATUS_0_CONNECTION_PRESENT) == 1)
|
||||||
|
return gpiod_direction_output(retimer->reset_gpio, 0);
|
||||||
|
|
||||||
|
gpiod_direction_output(retimer->reset_gpio, 1);
|
||||||
|
|
||||||
|
/* VDD IO supply enable to reset release delay */
|
||||||
|
usleep_range(4000, 14000);
|
||||||
|
|
||||||
|
gpiod_set_value(retimer->reset_gpio, 0);
|
||||||
|
|
||||||
|
/* firmware initialization delay */
|
||||||
|
msleep(60);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
err_switch_unregister:
|
||||||
|
typec_switch_unregister(retimer->sw);
|
||||||
|
err_vregs_disable:
|
||||||
|
ps883x_disable_vregs(retimer);
|
||||||
|
err_clk_disable:
|
||||||
|
clk_disable_unprepare(retimer->xo_clk);
|
||||||
|
err_mux_put:
|
||||||
|
typec_mux_put(retimer->typec_mux);
|
||||||
|
err_switch_put:
|
||||||
|
typec_switch_put(retimer->typec_switch);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void ps883x_retimer_remove(struct i2c_client *client)
|
||||||
|
{
|
||||||
|
struct ps883x_retimer *retimer = i2c_get_clientdata(client);
|
||||||
|
|
||||||
|
typec_retimer_unregister(retimer->retimer);
|
||||||
|
typec_switch_unregister(retimer->sw);
|
||||||
|
|
||||||
|
gpiod_set_value(retimer->reset_gpio, 1);
|
||||||
|
|
||||||
|
clk_disable_unprepare(retimer->xo_clk);
|
||||||
|
|
||||||
|
ps883x_disable_vregs(retimer);
|
||||||
|
|
||||||
|
typec_mux_put(retimer->typec_mux);
|
||||||
|
typec_switch_put(retimer->typec_switch);
|
||||||
|
}
|
||||||
|
|
||||||
|
static const struct of_device_id ps883x_retimer_of_table[] = {
|
||||||
|
{ .compatible = "parade,ps8830" },
|
||||||
|
{ }
|
||||||
|
};
|
||||||
|
MODULE_DEVICE_TABLE(of, ps883x_retimer_of_table);
|
||||||
|
|
||||||
|
static struct i2c_driver ps883x_retimer_driver = {
|
||||||
|
.driver = {
|
||||||
|
.name = "ps883x_retimer",
|
||||||
|
.of_match_table = ps883x_retimer_of_table,
|
||||||
|
},
|
||||||
|
.probe = ps883x_retimer_probe,
|
||||||
|
.remove = ps883x_retimer_remove,
|
||||||
|
};
|
||||||
|
|
||||||
|
module_i2c_driver(ps883x_retimer_driver);
|
||||||
|
|
||||||
|
MODULE_DESCRIPTION("Parade ps883x Type-C Retimer driver");
|
||||||
|
MODULE_LICENSE("GPL");
|
||||||
Reference in New Issue
Block a user