| Message ID | 20240119104550.140061-3-angelogioacchino.delregno@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add ITE IT5205 Passive MUX | expand |
On Fri, 19 Jan 2024 at 12:46, AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> wrote: > > The ITE IT5202 is a USB Type-C Alternate Mode Passive MUX, used for > muxing the SBU lines of a Type-C port with DisplayPort altmode and > also providing an orientation switch. > > Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> > --- > drivers/usb/typec/mux/Kconfig | 10 ++ > drivers/usb/typec/mux/Makefile | 1 + > drivers/usb/typec/mux/it5205.c | 292 +++++++++++++++++++++++++++++++++ > 3 files changed, 303 insertions(+) > create mode 100644 drivers/usb/typec/mux/it5205.c > > diff --git a/drivers/usb/typec/mux/Kconfig b/drivers/usb/typec/mux/Kconfig > index d2cb5e733e57..399c7b0983df 100644 > --- a/drivers/usb/typec/mux/Kconfig > +++ b/drivers/usb/typec/mux/Kconfig > @@ -36,6 +36,16 @@ config TYPEC_MUX_INTEL_PMC > control the USB role switch and also the multiplexer/demultiplexer > switches used with USB Type-C Alternate Modes. > > +config TYPEC_MUX_IT5205 > + tristate "ITE IT5205 Type-C USB Alt Mode Passive MUX driver" > + depends on I2C > + select REGMAP_I2C > + help > + Driver for the ITE IT5205 Type-C USB Alternate Mode Passive MUX > + which provides support for muxing DisplayPort and sideband signals > + on a common USB Type-C connector. > + If compiled as a module, the module will be named it5205. > + > config TYPEC_MUX_NB7VPQ904M > tristate "On Semiconductor NB7VPQ904M Type-C redriver driver" > depends on I2C > diff --git a/drivers/usb/typec/mux/Makefile b/drivers/usb/typec/mux/Makefile > index 57dc9ac6f8dc..bb96f30267af 100644 > --- a/drivers/usb/typec/mux/Makefile > +++ b/drivers/usb/typec/mux/Makefile > @@ -4,6 +4,7 @@ obj-$(CONFIG_TYPEC_MUX_FSA4480) += fsa4480.o > obj-$(CONFIG_TYPEC_MUX_GPIO_SBU) += gpio-sbu-mux.o > obj-$(CONFIG_TYPEC_MUX_PI3USB30532) += pi3usb30532.o > obj-$(CONFIG_TYPEC_MUX_INTEL_PMC) += intel_pmc_mux.o > +obj-$(CONFIG_TYPEC_MUX_IT5205) += it5205.o > obj-$(CONFIG_TYPEC_MUX_NB7VPQ904M) += nb7vpq904m.o > obj-$(CONFIG_TYPEC_MUX_PTN36502) += ptn36502.o > obj-$(CONFIG_TYPEC_MUX_WCD939X_USBSS) += wcd939x-usbss.o > diff --git a/drivers/usb/typec/mux/it5205.c b/drivers/usb/typec/mux/it5205.c > new file mode 100644 > index 000000000000..99203b8a086d > --- /dev/null > +++ b/drivers/usb/typec/mux/it5205.c > @@ -0,0 +1,292 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * ITE IT5205 Type-C USB alternate mode passive mux > + * > + * Copyright (c) 2020 MediaTek Inc. > + * Copyright (c) 2024 Collabora Ltd. > + * AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> > + * > + */ > +#include <linux/i2c.h> > +#include <linux/kernel.h> > +#include <linux/delay.h> > +#include <linux/module.h> > +#include <linux/platform_device.h> > +#include <linux/mutex.h> > +#include <linux/of_platform.h> > +#include <linux/regmap.h> > +#include <linux/usb/typec.h> > +#include <linux/usb/typec_mux.h> > +#include <linux/usb/typec_dp.h> > +#include <linux/regulator/consumer.h> > +#include <linux/gpio/consumer.h> > +#include <linux/gpio.h> > +#include <linux/usb/tcpm.h> I'd say, it is a usual custom to sort this list. [skipped] > + > +static int it5205_mux_set(struct typec_mux_dev *mux, struct typec_mux_state *state) > +{ > + struct it5205 *it = typec_mux_get_drvdata(mux); > + u8 val; > + > + switch (state->mode) { > + case TYPEC_STATE_USB: > + val = IT5205_USB; > + break; > + case TYPEC_DP_STATE_C: > + fallthrough; > + case TYPEC_DP_STATE_E: > + val = IT5205_DP; > + break; > + case TYPEC_DP_STATE_D: > + val = IT5205_DP_USB; > + break; > + case TYPEC_STATE_SAFE: > + fallthrough; > + default: > + val = 0; > + break; > + } Please add a check for state->altmode. All states at TYPEC_STATE_MODAL and above (which includes TYPEC_DP_STATE_[CDE]) are only relevant with connection to the particular typec->altmode SVID. > + > + return regmap_update_bits(it->regmap, IT5205_REG_MUXCR, > + IT5205_DP_USB_CTRL_MASK, val); > +} > + > +static irqreturn_t it5205_irq_handler(int irq, void *data) > +{ > + struct it5205 *it = data; > + int ret; > + u32 val; > + > + ret = regmap_read(it->regmap, IT5205_REG_ISR, &val); > + if (ret) > + return IRQ_NONE; > + > + if (val & IT5205_ISR_CSBU_OVP) { > + dev_warn(&it->client->dev, "Overvoltage detected!\n"); Will it cut the voltage automatically? > + > + /* Reset CSBU */ > + regmap_update_bits(it->regmap, IT5205_REG_CSBUSR, > + IT5205_CSBUSR_SWITCH, 0); > + regmap_update_bits(it->regmap, IT5205_REG_CSBUSR, > + IT5205_CSBUSR_SWITCH, IT5205_CSBUSR_SWITCH); > + } > + > + return IRQ_HANDLED; > +} The rest LGTM
Il 19/01/24 12:44, Dmitry Baryshkov ha scritto: > On Fri, 19 Jan 2024 at 12:46, AngeloGioacchino Del Regno > <angelogioacchino.delregno@collabora.com> wrote: >> >> The ITE IT5202 is a USB Type-C Alternate Mode Passive MUX, used for >> muxing the SBU lines of a Type-C port with DisplayPort altmode and >> also providing an orientation switch. >> >> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> >> --- >> drivers/usb/typec/mux/Kconfig | 10 ++ >> drivers/usb/typec/mux/Makefile | 1 + >> drivers/usb/typec/mux/it5205.c | 292 +++++++++++++++++++++++++++++++++ >> 3 files changed, 303 insertions(+) >> create mode 100644 drivers/usb/typec/mux/it5205.c >> >> diff --git a/drivers/usb/typec/mux/Kconfig b/drivers/usb/typec/mux/Kconfig >> index d2cb5e733e57..399c7b0983df 100644 >> --- a/drivers/usb/typec/mux/Kconfig >> +++ b/drivers/usb/typec/mux/Kconfig >> @@ -36,6 +36,16 @@ config TYPEC_MUX_INTEL_PMC >> control the USB role switch and also the multiplexer/demultiplexer >> switches used with USB Type-C Alternate Modes. >> >> +config TYPEC_MUX_IT5205 >> + tristate "ITE IT5205 Type-C USB Alt Mode Passive MUX driver" >> + depends on I2C >> + select REGMAP_I2C >> + help >> + Driver for the ITE IT5205 Type-C USB Alternate Mode Passive MUX >> + which provides support for muxing DisplayPort and sideband signals >> + on a common USB Type-C connector. >> + If compiled as a module, the module will be named it5205. >> + >> config TYPEC_MUX_NB7VPQ904M >> tristate "On Semiconductor NB7VPQ904M Type-C redriver driver" >> depends on I2C >> diff --git a/drivers/usb/typec/mux/Makefile b/drivers/usb/typec/mux/Makefile >> index 57dc9ac6f8dc..bb96f30267af 100644 >> --- a/drivers/usb/typec/mux/Makefile >> +++ b/drivers/usb/typec/mux/Makefile >> @@ -4,6 +4,7 @@ obj-$(CONFIG_TYPEC_MUX_FSA4480) += fsa4480.o >> obj-$(CONFIG_TYPEC_MUX_GPIO_SBU) += gpio-sbu-mux.o >> obj-$(CONFIG_TYPEC_MUX_PI3USB30532) += pi3usb30532.o >> obj-$(CONFIG_TYPEC_MUX_INTEL_PMC) += intel_pmc_mux.o >> +obj-$(CONFIG_TYPEC_MUX_IT5205) += it5205.o >> obj-$(CONFIG_TYPEC_MUX_NB7VPQ904M) += nb7vpq904m.o >> obj-$(CONFIG_TYPEC_MUX_PTN36502) += ptn36502.o >> obj-$(CONFIG_TYPEC_MUX_WCD939X_USBSS) += wcd939x-usbss.o >> diff --git a/drivers/usb/typec/mux/it5205.c b/drivers/usb/typec/mux/it5205.c >> new file mode 100644 >> index 000000000000..99203b8a086d >> --- /dev/null >> +++ b/drivers/usb/typec/mux/it5205.c >> @@ -0,0 +1,292 @@ >> +// SPDX-License-Identifier: GPL-2.0 >> +/* >> + * ITE IT5205 Type-C USB alternate mode passive mux >> + * >> + * Copyright (c) 2020 MediaTek Inc. >> + * Copyright (c) 2024 Collabora Ltd. >> + * AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> >> + * >> + */ >> +#include <linux/i2c.h> >> +#include <linux/kernel.h> >> +#include <linux/delay.h> >> +#include <linux/module.h> >> +#include <linux/platform_device.h> >> +#include <linux/mutex.h> >> +#include <linux/of_platform.h> >> +#include <linux/regmap.h> >> +#include <linux/usb/typec.h> >> +#include <linux/usb/typec_mux.h> >> +#include <linux/usb/typec_dp.h> >> +#include <linux/regulator/consumer.h> >> +#include <linux/gpio/consumer.h> >> +#include <linux/gpio.h> >> +#include <linux/usb/tcpm.h> > > I'd say, it is a usual custom to sort this list. > Oh, whoops. Totally forgot to do that, sorry - thanks for pointing that out! Done for v2. > [skipped] > >> + >> +static int it5205_mux_set(struct typec_mux_dev *mux, struct typec_mux_state *state) >> +{ >> + struct it5205 *it = typec_mux_get_drvdata(mux); >> + u8 val; >> + >> + switch (state->mode) { >> + case TYPEC_STATE_USB: >> + val = IT5205_USB; >> + break; >> + case TYPEC_DP_STATE_C: >> + fallthrough; >> + case TYPEC_DP_STATE_E: >> + val = IT5205_DP; >> + break; >> + case TYPEC_DP_STATE_D: >> + val = IT5205_DP_USB; >> + break; >> + case TYPEC_STATE_SAFE: >> + fallthrough; >> + default: >> + val = 0; >> + break; >> + } > > Please add a check for state->altmode. All states at TYPEC_STATE_MODAL > and above (which includes TYPEC_DP_STATE_[CDE]) are only relevant with > connection to the particular typec->altmode SVID. > Done for v2. >> + >> + return regmap_update_bits(it->regmap, IT5205_REG_MUXCR, >> + IT5205_DP_USB_CTRL_MASK, val); >> +} >> + >> +static irqreturn_t it5205_irq_handler(int irq, void *data) >> +{ >> + struct it5205 *it = data; >> + int ret; >> + u32 val; >> + >> + ret = regmap_read(it->regmap, IT5205_REG_ISR, &val); >> + if (ret) >> + return IRQ_NONE; >> + >> + if (val & IT5205_ISR_CSBU_OVP) { >> + dev_warn(&it->client->dev, "Overvoltage detected!\n"); > > Will it cut the voltage automatically? > As far as I understand, yes. Unfortunately, there's no datasheet. >> + >> + /* Reset CSBU */ >> + regmap_update_bits(it->regmap, IT5205_REG_CSBUSR, >> + IT5205_CSBUSR_SWITCH, 0); >> + regmap_update_bits(it->regmap, IT5205_REG_CSBUSR, >> + IT5205_CSBUSR_SWITCH, IT5205_CSBUSR_SWITCH); >> + } >> + >> + return IRQ_HANDLED; >> +} > > The rest LGTM > >
diff --git a/drivers/usb/typec/mux/Kconfig b/drivers/usb/typec/mux/Kconfig index d2cb5e733e57..399c7b0983df 100644 --- a/drivers/usb/typec/mux/Kconfig +++ b/drivers/usb/typec/mux/Kconfig @@ -36,6 +36,16 @@ config TYPEC_MUX_INTEL_PMC control the USB role switch and also the multiplexer/demultiplexer switches used with USB Type-C Alternate Modes. +config TYPEC_MUX_IT5205 + tristate "ITE IT5205 Type-C USB Alt Mode Passive MUX driver" + depends on I2C + select REGMAP_I2C + help + Driver for the ITE IT5205 Type-C USB Alternate Mode Passive MUX + which provides support for muxing DisplayPort and sideband signals + on a common USB Type-C connector. + If compiled as a module, the module will be named it5205. + config TYPEC_MUX_NB7VPQ904M tristate "On Semiconductor NB7VPQ904M Type-C redriver driver" depends on I2C diff --git a/drivers/usb/typec/mux/Makefile b/drivers/usb/typec/mux/Makefile index 57dc9ac6f8dc..bb96f30267af 100644 --- a/drivers/usb/typec/mux/Makefile +++ b/drivers/usb/typec/mux/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_TYPEC_MUX_FSA4480) += fsa4480.o obj-$(CONFIG_TYPEC_MUX_GPIO_SBU) += gpio-sbu-mux.o obj-$(CONFIG_TYPEC_MUX_PI3USB30532) += pi3usb30532.o obj-$(CONFIG_TYPEC_MUX_INTEL_PMC) += intel_pmc_mux.o +obj-$(CONFIG_TYPEC_MUX_IT5205) += it5205.o obj-$(CONFIG_TYPEC_MUX_NB7VPQ904M) += nb7vpq904m.o obj-$(CONFIG_TYPEC_MUX_PTN36502) += ptn36502.o obj-$(CONFIG_TYPEC_MUX_WCD939X_USBSS) += wcd939x-usbss.o diff --git a/drivers/usb/typec/mux/it5205.c b/drivers/usb/typec/mux/it5205.c new file mode 100644 index 000000000000..99203b8a086d --- /dev/null +++ b/drivers/usb/typec/mux/it5205.c @@ -0,0 +1,292 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ITE IT5205 Type-C USB alternate mode passive mux + * + * Copyright (c) 2020 MediaTek Inc. + * Copyright (c) 2024 Collabora Ltd. + * AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> + * + */ +#include <linux/i2c.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/mutex.h> +#include <linux/of_platform.h> +#include <linux/regmap.h> +#include <linux/usb/typec.h> +#include <linux/usb/typec_mux.h> +#include <linux/usb/typec_dp.h> +#include <linux/regulator/consumer.h> +#include <linux/gpio/consumer.h> +#include <linux/gpio.h> +#include <linux/usb/tcpm.h> + +#define IT5205_REG_CHIP_ID(x) (0x4 + (x)) +#define IT5205FN_CHIP_ID 0x35323035 /* "5205" */ + +/* MUX power down register */ +#define IT5205_REG_MUXPDR 0x10 +#define IT5205_MUX_POWER_DOWN BIT(0) + +/* MUX control register */ +#define IT5205_REG_MUXCR 0x11 +#define IT5205_POLARITY_INVERTED BIT(4) +#define IT5205_DP_USB_CTRL_MASK GENMASK(3, 0) +#define IT5205_DP 0x0f +#define IT5205_DP_USB 0x03 +#define IT5205_USB 0x07 + +/* Vref Select Register */ +#define IT5205_REG_VSR 0x10 +#define IT5205_VREF_SELECT_MASK GENMASK(5, 4) +#define IT5205_VREF_SELECT_3_3V 0x00 +#define IT5205_VREF_SELECT_OFF 0x20 + +/* CSBU Over Voltage Protection Register */ +#define IT5205_REG_CSBUOVPSR 0x1e +#define IT5205_OVP_SELECT_MASK GENMASK(5, 4) +#define IT5205_OVP_3_90V 0x00 +#define IT5205_OVP_3_68V 0x10 +#define IT5205_OVP_3_62V 0x20 +#define IT5205_OVP_3_57V 0x30 + +/* CSBU Switch Register */ +#define IT5205_REG_CSBUSR 0x22 +#define IT5205_CSBUSR_SWITCH BIT(0) + +/* Interrupt Switch Register */ +#define IT5205_REG_ISR 0x25 +#define IT5205_ISR_CSBU_MASK BIT(4) +#define IT5205_ISR_CSBU_OVP BIT(0) + +struct it5205 { + struct i2c_client *client; + struct regmap *regmap; + struct typec_switch_dev *sw; + struct typec_mux_dev *mux; +}; + +static int it5205_switch_set(struct typec_switch_dev *sw, enum typec_orientation orientation) +{ + struct it5205 *it = typec_switch_get_drvdata(sw); + + switch (orientation) { + case TYPEC_ORIENTATION_NORMAL: + regmap_update_bits(it->regmap, IT5205_REG_MUXCR, + IT5205_POLARITY_INVERTED, 0); + break; + case TYPEC_ORIENTATION_REVERSE: + regmap_update_bits(it->regmap, IT5205_REG_MUXCR, + IT5205_POLARITY_INVERTED, IT5205_POLARITY_INVERTED); + break; + case TYPEC_ORIENTATION_NONE: + fallthrough; + default: + regmap_write(it->regmap, IT5205_REG_MUXCR, 0); + break; + } + + return 0; +} + +static int it5205_mux_set(struct typec_mux_dev *mux, struct typec_mux_state *state) +{ + struct it5205 *it = typec_mux_get_drvdata(mux); + u8 val; + + switch (state->mode) { + case TYPEC_STATE_USB: + val = IT5205_USB; + break; + case TYPEC_DP_STATE_C: + fallthrough; + case TYPEC_DP_STATE_E: + val = IT5205_DP; + break; + case TYPEC_DP_STATE_D: + val = IT5205_DP_USB; + break; + case TYPEC_STATE_SAFE: + fallthrough; + default: + val = 0; + break; + } + + return regmap_update_bits(it->regmap, IT5205_REG_MUXCR, + IT5205_DP_USB_CTRL_MASK, val); +} + +static irqreturn_t it5205_irq_handler(int irq, void *data) +{ + struct it5205 *it = data; + int ret; + u32 val; + + ret = regmap_read(it->regmap, IT5205_REG_ISR, &val); + if (ret) + return IRQ_NONE; + + if (val & IT5205_ISR_CSBU_OVP) { + dev_warn(&it->client->dev, "Overvoltage detected!\n"); + + /* Reset CSBU */ + regmap_update_bits(it->regmap, IT5205_REG_CSBUSR, + IT5205_CSBUSR_SWITCH, 0); + regmap_update_bits(it->regmap, IT5205_REG_CSBUSR, + IT5205_CSBUSR_SWITCH, IT5205_CSBUSR_SWITCH); + } + + return IRQ_HANDLED; +} + +static void it5205_enable_ovp(struct it5205 *it) +{ + /* Select Vref 3.3v */ + regmap_update_bits(it->regmap, IT5205_REG_VSR, + IT5205_VREF_SELECT_MASK, IT5205_VREF_SELECT_3_3V); + + /* Trigger OVP at 3.68V */ + regmap_update_bits(it->regmap, IT5205_REG_CSBUOVPSR, + IT5205_OVP_SELECT_MASK, IT5205_OVP_3_68V); + + /* Unmask OVP interrupt */ + regmap_update_bits(it->regmap, IT5205_REG_ISR, + IT5205_ISR_CSBU_MASK, 0); + + /* Enable CSBU Interrupt */ + regmap_update_bits(it->regmap, IT5205_REG_CSBUSR, + IT5205_CSBUSR_SWITCH, IT5205_CSBUSR_SWITCH); +} + +static const struct regmap_config it5205_regmap = { + .max_register = 0x2f, + .reg_bits = 8, + .val_bits = 8, +}; + +static int it5205_probe(struct i2c_client *client) +{ + struct typec_switch_desc sw_desc = { }; + struct typec_mux_desc mux_desc = { }; + struct device *dev = &client->dev; + struct it5205 *it; + u32 val, chipid = 0; + int i, ret; + + it = devm_kzalloc(dev, sizeof(*it), GFP_KERNEL); + if (!it) + return -ENOMEM; + + ret = devm_regulator_get_enable(dev, "vcc"); + if (ret) + return dev_err_probe(dev, ret, "Failed to get regulator\n"); + + it->client = client; + + it->regmap = devm_regmap_init_i2c(client, &it5205_regmap); + if (IS_ERR(it->regmap)) + return dev_err_probe(dev, PTR_ERR(it->regmap), + "Failed to init regmap\n"); + + /* IT5205 needs a long time to power up after enabling regulator */ + msleep(50); + + /* Unset poweroff bit */ + ret = regmap_write(it->regmap, IT5205_REG_MUXPDR, 0); + if (ret) + return dev_err_probe(dev, ret, "Failed to set power on\n"); + + /* Read the 32 bits ChipID */ + for (i = 3; i >= 0; i--) { + ret = regmap_read(it->regmap, IT5205_REG_CHIP_ID(i), &val); + if (ret) + return ret; + + chipid |= val << (i * 8); + } + + if (chipid != IT5205FN_CHIP_ID) + return dev_err_probe(dev, -EINVAL, + "Unknown ChipID 0x%x\n", chipid); + + /* Initialize as USB mode with default (non-inverted) polarity */ + ret = regmap_write(it->regmap, IT5205_REG_MUXCR, IT5205_USB); + if (ret) + return dev_err_probe(dev, ret, "Cannot set mode to USB\n"); + + sw_desc.drvdata = it; + sw_desc.fwnode = dev_fwnode(dev); + sw_desc.set = it5205_switch_set; + + it->sw = typec_switch_register(dev, &sw_desc); + if (IS_ERR(it->sw)) + return dev_err_probe(dev, PTR_ERR(it->sw), + "failed to register typec switch\n"); + + mux_desc.drvdata = it; + mux_desc.fwnode = dev_fwnode(dev); + mux_desc.set = it5205_mux_set; + + it->mux = typec_mux_register(dev, &mux_desc); + if (IS_ERR(it->mux)) { + typec_switch_unregister(it->sw); + return dev_err_probe(dev, PTR_ERR(it->mux), + "failed to register typec mux\n"); + } + + i2c_set_clientdata(client, it); + + if (of_property_read_bool(dev->of_node, "ite,ovp-enable") && client->irq) { + it5205_enable_ovp(it); + + ret = devm_request_threaded_irq(dev, client->irq, NULL, + it5205_irq_handler, + IRQF_ONESHOT, dev_name(dev), it); + if (ret) { + typec_mux_unregister(it->mux); + typec_switch_unregister(it->sw); + return dev_err_probe(dev, ret, "Failed to request irq\n"); + } + } + + return 0; +} + +static void it5205_remove(struct i2c_client *client) +{ + struct it5205 *it = i2c_get_clientdata(client); + + typec_mux_unregister(it->mux); + typec_switch_unregister(it->sw); +} + +static const struct i2c_device_id it5205_table[] = { + { "it5205" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(i2c, it5205_table); + +static const struct of_device_id it5205_of_table[] = { + { .compatible = "ite,it5205" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, it5205_match_table); + +static struct i2c_driver it5205_driver = { + .driver = { + .name = "it5205", + .of_match_table = it5205_of_table, + }, + .probe = it5205_probe, + .remove = it5205_remove, + .id_table = it5205_table, +}; +module_i2c_driver(it5205_driver); + +MODULE_AUTHOR("Tianping Fang <tianping.fang@mediatek.com>"); +MODULE_AUTHOR("AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>"); +MODULE_DESCRIPTION("ITE IT5205 alternate mode passive MUX driver"); +MODULE_LICENSE("GPL");
The ITE IT5202 is a USB Type-C Alternate Mode Passive MUX, used for muxing the SBU lines of a Type-C port with DisplayPort altmode and also providing an orientation switch. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> --- drivers/usb/typec/mux/Kconfig | 10 ++ drivers/usb/typec/mux/Makefile | 1 + drivers/usb/typec/mux/it5205.c | 292 +++++++++++++++++++++++++++++++++ 3 files changed, 303 insertions(+) create mode 100644 drivers/usb/typec/mux/it5205.c