Hi
Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> 於 2022年1月31日 週一 下午6:01寫道：
>
> Hi,
>
> On Sat, Jan 15, 2022 at 08:56:31AM +0800, cy_huang wrote:
> > From: ChiYuan Huang <cy_huang@xxxxxxxxxxx>
> >
> > Richtek RT1719 is a sink-only Type-C PD controller it complies with
> > latest USB Type-C and PD standards. It integrates the physical layer of
> > USB power delivery protocol to allow up to 100W of power.
> >
> > Signed-off-by: ChiYuan Huang <cy_huang@xxxxxxxxxxx>
>
> This looked OK to me, but one nitpick. Don't return ENOTSUPP, use
> EOPNOTSUPP instead.
>
OK. I.ll use EOPNOTSUPP to replace all ENOTSUPPs.
> I'm pretty sure that scripts/checkpatch.pl will also tell you to do
> so, so please run that script and fix all the errors and warnings that
> it finds while at it.
>
> thanks,
>
Yap, Thanks. I also find there's still one consistent space error need
to be fixed.
Ack in next.
> > ---
> > drivers/usb/typec/Kconfig | 12 +
> > drivers/usb/typec/Makefile | 1 +
> > drivers/usb/typec/rt1719.c | 976 +++++++++++++++++++++++++++++++++++++++++++++
> > 3 files changed, 989 insertions(+)
> > create mode 100644 drivers/usb/typec/rt1719.c
> >
> > diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig
> > index ab480f3..bc918ca 100644
> > --- a/drivers/usb/typec/Kconfig
> > +++ b/drivers/usb/typec/Kconfig
> > @@ -52,6 +52,18 @@ source "drivers/usb/typec/ucsi/Kconfig"
> >
> > source "drivers/usb/typec/tipd/Kconfig"
> >
> > +config TYPEC_RT1719
> > + tristate "Richtek RT1719 Sink Only Type-C controller driver"
> > + depends on USB_ROLE_SWITCH || !USB_ROLE_SWITCH
> > + depends on I2C
> > + select REGMAP_I2C
> > + help
> > + Say Y or M here if your system has Richtek RT1719 sink only
> > + Type-C port controller driver.
> > +
> > + If you choose to build this driver as a dynamically linked module, the
> > + module will be called rt1719.ko
> > +
> > config TYPEC_HD3SS3220
> > tristate "TI HD3SS3220 Type-C DRP Port controller driver"
> > depends on I2C
> > diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile
> > index 57870a2..441dd6c 100644
> > --- a/drivers/usb/typec/Makefile
> > +++ b/drivers/usb/typec/Makefile
> > @@ -9,4 +9,5 @@ obj-$(CONFIG_TYPEC_TPS6598X) += tipd/
> > obj-$(CONFIG_TYPEC_HD3SS3220) += hd3ss3220.o
> > obj-$(CONFIG_TYPEC_QCOM_PMIC) += qcom-pmic-typec.o
> > obj-$(CONFIG_TYPEC_STUSB160X) += stusb160x.o
> > +obj-$(CONFIG_TYPEC_RT1719) += rt1719.o
> > obj-$(CONFIG_TYPEC) += mux/
> > diff --git a/drivers/usb/typec/rt1719.c b/drivers/usb/typec/rt1719.c
> > new file mode 100644
> > index 00000000..9da65ee
> > --- /dev/null
> > +++ b/drivers/usb/typec/rt1719.c
> > @@ -0,0 +1,976 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +
> > +#include <linux/bitfield.h>
> > +#include <linux/completion.h>
> > +#include <linux/i2c.h>
> > +#include <linux/interrupt.h>
> > +#include <linux/kernel.h>
> > +#include <linux/module.h>
> > +#include <linux/power_supply.h>
> > +#include <linux/regmap.h>
> > +#include <linux/usb/pd.h>
> > +#include <linux/usb/role.h>
> > +#include <linux/usb/typec.h>
> > +
> > +#define RT1719_REG_TXCTRL1 0x03
> > +#define RT1719_REG_TXCTRL2 0x04
> > +#define RT1719_REG_POLICYINFO 0x0E
> > +#define RT1719_REG_SRCPDO1 0x11
> > +#define RT1719_REG_MASKS 0x2D
> > +#define RT1719_REG_EVENTS 0x33
> > +#define RT1719_REG_STATS 0x37
> > +#define RT1719_REG_PSELINFO 0x3C
> > +#define RT1719_REG_USBSETINFO 0x3E
> > +#define RT1719_REG_VENID 0x82
> > +
> > +#define RT1719_UNIQUE_PID 0x1719
> > +#define RT1719_REQDRSWAP_MASK BIT(7)
> > +#define RT1719_EVALMODE_MASK BIT(4)
> > +#define RT1719_REQSRCPDO_MASK GENMASK(2, 0)
> > +#define RT1719_TXSPDOREQ_MASK BIT(7)
> > +#define RT1719_INT_DRSW_ACCEPT BIT(23)
> > +#define RT1719_INT_RX_SRCCAP BIT(21)
> > +#define RT1719_INT_VBUS_DCT BIT(6)
> > +#define RT1719_INT_VBUS_PRESENT BIT(5)
> > +#define RT1719_INT_PE_SNK_RDY BIT(2)
> > +#define RT1719_CC1_STAT GENMASK(9, 8)
> > +#define RT1719_CC2_STAT GENMASK(11, 10)
> > +#define RT1719_POLARITY_MASK BIT(23)
> > +#define RT1719_DATAROLE_MASK BIT(22)
> > +#define RT1719_PDSPECREV_MASK GENMASK(21, 20)
> > +#define RT1719_SPDOSEL_MASK GENMASK(18, 16)
> > +#define RT1719_SPDONUM_MASK GENMASK(15, 13)
> > +#define RT1719_ATTACH_VBUS BIT(12)
> > +#define RT1719_ATTACH_DBG BIT(10)
> > +#define RT1719_ATTACH_SNK BIT(9)
> > +#define RT1719_ATTACHDEV_MASK (RT1719_ATTACH_VBUS | RT1719_ATTACH_DBG | \
> > + RT1719_ATTACH_SNK)
> > +#define RT1719_PE_EXP_CONTRACT BIT(2)
> > +#define RT1719_PSEL_SUPPORT BIT(15)
> > +#define RT1719_TBLSEL_MASK BIT(6)
> > +#define RT1719_LATPSEL_MASK GENMASK(5, 0)
> > +#define RT1719_USBINFO_MASK GENMASK(1, 0)
> > +#define RT1719_USB_DFPUFP 3
> > +#define RT1719_MAX_SRCPDO 7
> > +
> > +enum {
> > + SNK_PWR_OPEN = 0,
> > + SNK_PWR_DEF,
> > + SNK_PWR_1P5A,
> > + SNK_PWR_3A
> > +};
> > +
> > +enum {
> > + USBPD_SPECREV_1_0 = 0,
> > + USBPD_SPECREV_2_0,
> > + USBPD_SPECREV_3_0
> > +};
> > +
> > +enum rt1719_snkcap {
> > + RT1719_SNKCAP_5V = 0,
> > + RT1719_SNKCAP_9V,
> > + RT1719_SNKCAP_12V,
> > + RT1719_SNKCAP_15V,
> > + RT1719_SNKCAP_20V,
> > + RT1719_MAX_SNKCAP
> > +};
> > +
> > +struct rt1719_psel_cap {
> > + u8 lomask;
> > + u8 himask;
> > + u32 milliwatt;
> > + u32 milliamp;
> > +};
> > +
> > +struct rt1719_data {
> > + struct device *dev;
> > + struct regmap *regmap;
> > + struct typec_port *port;
> > + struct usb_role_switch *role_sw;
> > + struct power_supply *psy;
> > + struct typec_partner *partner;
> > + struct power_supply_desc psy_desc;
> > + struct usb_pd_identity partner_ident;
> > + struct typec_partner_desc partner_desc;
> > + struct completion req_completion;
> > + enum power_supply_usb_type usb_type;
> > + bool attached;
> > + bool pd_capable;
> > + bool drswap_support;
> > + u32 voltage;
> > + u32 req_voltage;
> > + u32 max_current;
> > + u32 op_current;
> > + u32 spdos[RT1719_MAX_SRCPDO];
> > + u16 snkcaps[RT1719_MAX_SNKCAP];
> > + int spdo_num;
> > + int spdo_sel;
> > + u32 conn_info;
> > + u16 conn_stat;
> > +};
> > +
> > +static const enum power_supply_usb_type rt1719_psy_usb_types[] = {
> > + POWER_SUPPLY_USB_TYPE_C,
> > + POWER_SUPPLY_USB_TYPE_PD,
> > + POWER_SUPPLY_USB_TYPE_PD_PPS
> > +};
> > +
> > +static const enum power_supply_property rt1719_psy_properties[] = {
> > + POWER_SUPPLY_PROP_ONLINE,
> > + POWER_SUPPLY_PROP_USB_TYPE,
> > + POWER_SUPPLY_PROP_VOLTAGE_NOW,
> > + POWER_SUPPLY_PROP_CURRENT_MAX,
> > + POWER_SUPPLY_PROP_CURRENT_NOW
> > +};
> > +
> > +static int rt1719_read16(struct rt1719_data *data, unsigned int reg, u16 *val)
> > +{
> > + __le16 regval;
> > + int ret;
> > +
> > + ret = regmap_raw_read(data->regmap, reg, ®val, sizeof(regval));
> > + if (ret)
> > + return ret;
> > +
> > + *val = le16_to_cpu(regval);
> > + return 0;
> > +}
> > +
> > +static int rt1719_read32(struct rt1719_data *data, unsigned int reg, u32 *val)
> > +{
> > + __le32 regval;
> > + int ret;
> > +
> > + ret = regmap_raw_read(data->regmap, reg, ®val, sizeof(regval));
> > + if (ret)
> > + return ret;
> > +
> > + *val = le32_to_cpu(regval);
> > + return 0;
> > +}
> > +
> > +static int rt1719_write32(struct rt1719_data *data, unsigned int reg, u32 val)
> > +{
> > + __le32 regval = cpu_to_le32(val);
> > +
> > + return regmap_raw_write(data->regmap, reg, ®val, sizeof(regval));
> > +}
> > +
> > +static enum typec_pwr_opmode rt1719_get_pwr_opmode(u32 conn, u16 stat)
> > +{
> > + u16 cc1, cc2, cc_stat;
> > +
> > + cc1 = FIELD_GET(RT1719_CC1_STAT, stat);
> > + cc2 = FIELD_GET(RT1719_CC2_STAT, stat);
> > +
> > + if (conn & RT1719_ATTACH_SNK) {
> > + if (conn & RT1719_POLARITY_MASK)
> > + cc_stat = cc2;
> > + else
> > + cc_stat = cc1;
> > +
> > + switch (cc_stat) {
> > + case SNK_PWR_3A:
> > + return TYPEC_PWR_MODE_3_0A;
> > + case SNK_PWR_1P5A:
> > + return TYPEC_PWR_MODE_1_5A;
> > + }
> > + } else if (conn & RT1719_ATTACH_DBG) {
> > + if ((cc1 == SNK_PWR_1P5A && cc2 == SNK_PWR_DEF) ||
> > + (cc1 == SNK_PWR_DEF && cc2 == SNK_PWR_1P5A))
> > + return TYPEC_PWR_MODE_1_5A;
> > + else if ((cc1 == SNK_PWR_3A && cc2 == SNK_PWR_DEF) ||
> > + (cc1 == SNK_PWR_DEF && cc2 == SNK_PWR_3A))
> > + return TYPEC_PWR_MODE_3_0A;
> > + }
> > +
> > + return TYPEC_PWR_MODE_USB;
> > +}
> > +
> > +static enum typec_data_role rt1719_get_data_role(u32 conn)
> > +{
> > + if (conn & RT1719_DATAROLE_MASK)
> > + return TYPEC_HOST;
> > + return TYPEC_DEVICE;
> > +}
> > +
> > +static void rt1719_set_data_role(struct rt1719_data *data,
> > + enum typec_data_role data_role,
> > + bool attached)
> > +{
> > + enum usb_role usb_role = USB_ROLE_NONE;
> > +
> > + if (attached) {
> > + if (data_role == TYPEC_HOST)
> > + usb_role = USB_ROLE_HOST;
> > + else
> > + usb_role = USB_ROLE_DEVICE;
> > + }
> > +
> > + usb_role_switch_set_role(data->role_sw, usb_role);
> > + typec_set_data_role(data->port, data_role);
> > +}
> > +
> > +static void rt1719_update_data_role(struct rt1719_data *data)
> > +{
> > + if (!data->attached)
> > + return;
> > +
> > + rt1719_set_data_role(data, rt1719_get_data_role(data->conn_info), true);
> > +}
> > +
> > +static void rt1719_register_partner(struct rt1719_data *data)
> > +{
> > + u16 spec_rev = 0;
> > +
> > + if (data->pd_capable) {
> > + u32 rev;
> > +
> > + rev = FIELD_GET(RT1719_PDSPECREV_MASK, data->conn_info);
> > + switch (rev) {
> > + case USBPD_SPECREV_3_0:
> > + spec_rev = 0x0300;
> > + break;
> > + case USBPD_SPECREV_2_0:
> > + spec_rev = 0x0200;
> > + break;
> > + default:
> > + spec_rev = 0x0100;
> > + break;
> > + }
> > + }
> > +
> > + /* Just to prevent multiple times attach */
> > + if (data->partner)
> > + typec_unregister_partner(data->partner);
> > +
> > + memset(&data->partner_ident, 0, sizeof(data->partner_ident));
> > + data->partner_desc.usb_pd = data->pd_capable;
> > + data->partner_desc.pd_revision = spec_rev;
> > +
> > + if (data->conn_info & RT1719_ATTACH_DBG)
> > + data->partner_desc.accessory = TYPEC_ACCESSORY_DEBUG;
> > + else
> > + data->partner_desc.accessory = TYPEC_ACCESSORY_NONE;
> > +
> > + data->partner = typec_register_partner(data->port, &data->partner_desc);
> > +}
> > +
> > +static void rt1719_attach(struct rt1719_data *data)
> > +{
> > + enum typec_pwr_opmode pwr_opmode;
> > + enum typec_data_role data_role;
> > + u32 volt = 5000, curr = 500;
> > +
> > + if (!(data->conn_info & RT1719_ATTACHDEV_MASK))
> > + return;
> > +
> > + pwr_opmode = rt1719_get_pwr_opmode(data->conn_info, data->conn_stat);
> > + data_role = rt1719_get_data_role(data->conn_info);
> > +
> > + typec_set_pwr_opmode(data->port, pwr_opmode);
> > + rt1719_set_data_role(data, data_role, true);
> > +
> > + if (data->conn_info & RT1719_ATTACH_SNK)
> > + rt1719_register_partner(data);
> > +
> > + if (pwr_opmode == TYPEC_PWR_MODE_3_0A)
> > + curr = 3000;
> > + else if (pwr_opmode == TYPEC_PWR_MODE_1_5A)
> > + curr = 1500;
> > +
> > + data->voltage = volt * 1000;
> > + data->max_current = data->op_current = curr * 1000;
> > + data->attached = true;
> > +
> > + power_supply_changed(data->psy);
> > +}
> > +
> > +static void rt1719_detach(struct rt1719_data *data)
> > +{
> > + if (!data->attached || (data->conn_info & RT1719_ATTACHDEV_MASK))
> > + return;
> > +
> > + typec_unregister_partner(data->partner);
> > + data->partner = NULL;
> > +
> > + typec_set_pwr_opmode(data->port, TYPEC_PWR_MODE_USB);
> > + rt1719_set_data_role(data, TYPEC_DEVICE, false);
> > +
> > + memset32(data->spdos, 0, RT1719_MAX_SRCPDO);
> > + data->spdo_num = 0;
> > + data->voltage = data->max_current = data->op_current = 0;
> > + data->attached = data->pd_capable = false;
> > +
> > + data->usb_type = POWER_SUPPLY_USB_TYPE_C;
> > +
> > + power_supply_changed(data->psy);
> > +}
> > +
> > +static void rt1719_update_operating_status(struct rt1719_data *data)
> > +{
> > + enum power_supply_usb_type usb_type = POWER_SUPPLY_USB_TYPE_PD;
> > + u32 voltage, max_current, op_current;
> > + int i, snk_sel;
> > +
> > + for (i = 0; i < data->spdo_num; i++) {
> > + u32 pdo = data->spdos[i];
> > + enum pd_pdo_type type = pdo_type(pdo);
> > +
> > + if (type == PDO_TYPE_APDO) {
> > + usb_type = POWER_SUPPLY_USB_TYPE_PD_PPS;
> > + break;
> > + }
> > + }
> > +
> > + data->spdo_sel = FIELD_GET(RT1719_SPDOSEL_MASK, data->conn_info);
> > + if (data->spdo_sel <= 0)
> > + return;
> > +
> > + data->usb_type = usb_type;
> > +
> > + voltage = pdo_fixed_voltage(data->spdos[data->spdo_sel -1]);
> > + max_current = pdo_max_current(data->spdos[data->spdo_sel - 1]);
> > +
> > + switch (voltage) {
> > + case 5000:
> > + snk_sel = RT1719_SNKCAP_5V;
> > + break;
> > + case 9000:
> > + snk_sel = RT1719_SNKCAP_9V;
> > + break;
> > + case 12000:
> > + snk_sel = RT1719_SNKCAP_12V;
> > + break;
> > + case 15000:
> > + snk_sel = RT1719_SNKCAP_15V;
> > + break;
> > + case 20000:
> > + snk_sel = RT1719_SNKCAP_20V;
> > + break;
> > + default:
> > + return;
> > + }
> > +
> > + op_current = min(max_current, pdo_max_current(data->snkcaps[snk_sel]));
> > +
> > + /* covert mV/mA to uV/uA */
> > + data->voltage = voltage * 1000;
> > + data->max_current = max_current * 1000;
> > + data->op_current = op_current * 1000;
> > +
> > + power_supply_changed(data->psy);
> > +}
> > +
> > +static void rt1719_update_pwr_opmode(struct rt1719_data *data)
> > +{
> > + if (!data->attached)
> > + return;
> > +
> > + if (!data->pd_capable) {
> > + data->pd_capable = true;
> > +
> > + typec_set_pwr_opmode(data->port, TYPEC_PWR_MODE_PD);
> > + rt1719_register_partner(data);
> > + }
> > +
> > + rt1719_update_operating_status(data);
> > +}
> > +
> > +static void rt1719_update_source_pdos(struct rt1719_data *data)
> > +{
> > + int spdo_num = FIELD_GET(RT1719_SPDONUM_MASK, data->conn_info);
> > + __le32 src_pdos[RT1719_MAX_SRCPDO] = { };
> > + int i, ret;
> > +
> > + if (!data->attached)
> > + return;
> > +
> > + ret = regmap_raw_read(data->regmap, RT1719_REG_SRCPDO1, src_pdos,
> > + sizeof(__le32) * spdo_num);
> > + if (ret)
> > + return;
> > +
> > + data->spdo_num = spdo_num;
> > + for (i = 0; i < spdo_num; i++)
> > + data->spdos[i] = le32_to_cpu(src_pdos[i]);
> > +}
> > +
> > +static int rt1719_dr_set(struct typec_port *port, enum typec_data_role role)
> > +{
> > + struct rt1719_data *data = typec_get_drvdata(port);
> > + enum typec_data_role cur_role;
> > + int ret;
> > +
> > + if (!data->attached || !data->pd_capable || !data->drswap_support)
> > + return -EINVAL;
> > +
> > + if (data->spdo_num > 0 && !(data->spdos[0] & PDO_FIXED_DATA_SWAP))
> > + return -EINVAL;
> > +
> > + cur_role = rt1719_get_data_role(data->conn_info);
> > + if (cur_role == role)
> > + return 0;
> > +
> > + ret = regmap_update_bits(data->regmap, RT1719_REG_TXCTRL1,
> > + RT1719_REQDRSWAP_MASK, RT1719_REQDRSWAP_MASK);
> > + if (ret)
> > + return ret;
> > +
> > + reinit_completion(&data->req_completion);
> > + ret = wait_for_completion_timeout(&data->req_completion,
> > + msecs_to_jiffies(400));
> > + if (ret == 0)
> > + return -ETIMEDOUT;
> > +
> > + cur_role = rt1719_get_data_role(data->conn_info);
> > + if (cur_role != role)
> > + return -ENOTSUPP;
> > +
> > + rt1719_set_data_role(data, role, true);
> > + return 0;
> > +}
> > +
> > +static const struct typec_operations rt1719_port_ops = {
> > + .dr_set = rt1719_dr_set,
> > +};
> > +
> > +static int rt1719_usbpd_request_voltage(struct rt1719_data *data)
> > +{
> > + u32 src_voltage;
> > + int snk_sel, src_sel = -1;
> > + int i, ret;
> > +
> > + if (!data->attached || !data->pd_capable || data->spdo_sel <= 0)
> > + return -EINVAL;
> > +
> > + src_voltage = pdo_fixed_voltage(data->spdos[data->spdo_sel - 1]);
> > + if (src_voltage == data->req_voltage)
> > + return 0;
> > +
> > + switch (data->req_voltage) {
> > + case 5000:
> > + snk_sel = RT1719_SNKCAP_5V;
> > + break;
> > + case 9000:
> > + snk_sel = RT1719_SNKCAP_9V;
> > + break;
> > + case 12000:
> > + snk_sel = RT1719_SNKCAP_12V;
> > + break;
> > + case 15000:
> > + snk_sel = RT1719_SNKCAP_15V;
> > + break;
> > + case 20000:
> > + snk_sel = RT1719_SNKCAP_20V;
> > + break;
> > + default:
> > + return -EINVAL;
> > + }
> > +
> > + if (!(data->snkcaps[snk_sel] & RT1719_PSEL_SUPPORT))
> > + return -EINVAL;
> > +
> > + for (i = 0; i < data->spdo_num; i++) {
> > + enum pd_pdo_type type = pdo_type(data->spdos[i]);
> > +
> > + if (type != PDO_TYPE_FIXED)
> > + continue;
> > +
> > + src_voltage = pdo_fixed_voltage(data->spdos[i]);
> > + if (src_voltage == data->req_voltage) {
> > + src_sel = i;
> > + break;
> > + }
> > + }
> > +
> > + if (src_sel == -1)
> > + return -ENOTSUPP;
> > +
> > + ret = regmap_update_bits(data->regmap, RT1719_REG_TXCTRL1,
> > + RT1719_EVALMODE_MASK | RT1719_REQSRCPDO_MASK,
> > + RT1719_EVALMODE_MASK | (src_sel + 1));
> > + ret |= regmap_update_bits(data->regmap, RT1719_REG_TXCTRL2,
> > + RT1719_TXSPDOREQ_MASK, RT1719_TXSPDOREQ_MASK);
> > + if (ret)
> > + return ret;
> > +
> > + reinit_completion(&data->req_completion);
> > + ret = wait_for_completion_timeout(&data->req_completion,
> > + msecs_to_jiffies(400));
> > + if (!ret)
> > + return -ETIMEDOUT;
> > +
> > + return 0;
> > +}
> > +
> > +static int rt1719_psy_set_property(struct power_supply *psy,
> > + enum power_supply_property psp,
> > + const union power_supply_propval *val)
> > +{
> > + struct rt1719_data *data = power_supply_get_drvdata(psy);
> > + int ret = -ENOTSUPP;
> > +
> > + if (psp == POWER_SUPPLY_PROP_VOLTAGE_NOW) {
> > + data->req_voltage = val->intval / 1000;
> > + ret = rt1719_usbpd_request_voltage(data);
> > + }
> > +
> > + return ret;
> > +}
> > +
> > +static int rt1719_psy_get_property(struct power_supply *psy,
> > + enum power_supply_property psp,
> > + union power_supply_propval *val)
> > +{
> > + struct rt1719_data *data = power_supply_get_drvdata(psy);
> > + int ret = 0;
> > +
> > + switch (psp) {
> > + case POWER_SUPPLY_PROP_ONLINE:
> > + val->intval = data->attached ? 1 : 0;
> > + break;
> > + case POWER_SUPPLY_PROP_USB_TYPE:
> > + val->intval = data->usb_type;
> > + break;
> > + case POWER_SUPPLY_PROP_VOLTAGE_NOW:
> > + val->intval = data->voltage;
> > + break;
> > + case POWER_SUPPLY_PROP_CURRENT_MAX:
> > + val->intval = data->max_current;
> > + break;
> > + case POWER_SUPPLY_PROP_CURRENT_NOW:
> > + val->intval = data->op_current;
> > + break;
> > + default:
> > + ret = -EINVAL;
> > + break;
> > + }
> > +
> > + return ret;
> > +}
> > +
> > +static int rt1719_psy_property_is_writeable(struct power_supply *psy,
> > + enum power_supply_property psp)
> > +{
> > + if (psp == POWER_SUPPLY_PROP_VOLTAGE_NOW)
> > + return 1;
> > + return 0;
> > +}
> > +
> > +static int devm_rt1719_psy_register(struct rt1719_data *data)
> > +{
> > + static const char *rt1719_psy_name_prefix = "rt1719-source-psy-";
> > + const char *port_dev_name = dev_name(data->dev);
> > + struct power_supply_config psy_cfg = { };
> > + size_t psy_name_len = strlen(rt1719_psy_name_prefix) +
> > + strlen(port_dev_name) + 1;
> > + char *psy_name;
> > +
> > + psy_cfg.fwnode = dev_fwnode(data->dev);
> > + psy_cfg.drv_data = data;
> > +
> > + psy_name = devm_kzalloc(data->dev, psy_name_len, GFP_KERNEL);
> > + if (!psy_name)
> > + return -ENOMEM;
> > +
> > + snprintf(psy_name, psy_name_len, "%s%s", rt1719_psy_name_prefix,
> > + port_dev_name);
> > + data->psy_desc.name = psy_name;
> > + data->psy_desc.type = POWER_SUPPLY_TYPE_USB;
> > + data->psy_desc.usb_types = rt1719_psy_usb_types;
> > + data->psy_desc.num_usb_types = ARRAY_SIZE(rt1719_psy_usb_types);
> > + data->psy_desc.properties = rt1719_psy_properties;
> > + data->psy_desc.num_properties = ARRAY_SIZE(rt1719_psy_properties);
> > + data->psy_desc.get_property = rt1719_psy_get_property;
> > + data->psy_desc.set_property = rt1719_psy_set_property;
> > + data->psy_desc.property_is_writeable = rt1719_psy_property_is_writeable;
> > +
> > + data->usb_type = POWER_SUPPLY_USB_TYPE_C;
> > +
> > + data->psy = devm_power_supply_register(data->dev, &data->psy_desc,
> > + &psy_cfg);
> > +
> > + return PTR_ERR_OR_ZERO(data->psy);
> > +}
> > +
> > +static irqreturn_t rt1719_irq_handler(int irq, void *priv)
> > +{
> > + struct rt1719_data *data = priv;
> > + u32 events, conn_info;
> > + u16 conn_stat;
> > + int ret;
> > +
> > + ret = rt1719_read32(data, RT1719_REG_EVENTS, &events);
> > + ret |= rt1719_read32(data, RT1719_REG_POLICYINFO, &conn_info);
> > + ret |= rt1719_read16(data, RT1719_REG_STATS, &conn_stat);
> > + if (ret)
> > + return IRQ_NONE;
> > +
> > + data->conn_info = conn_info;
> > + data->conn_stat = conn_stat;
> > +
> > + events &= (RT1719_INT_DRSW_ACCEPT | RT1719_INT_RX_SRCCAP |
> > + RT1719_INT_VBUS_PRESENT | RT1719_INT_VBUS_DCT |
> > + RT1719_INT_PE_SNK_RDY);
> > +
> > + if (events & RT1719_INT_DRSW_ACCEPT)
> > + rt1719_update_data_role(data);
> > +
> > + if (events & RT1719_INT_VBUS_PRESENT)
> > + rt1719_attach(data);
> > +
> > + if (events & RT1719_INT_VBUS_DCT)
> > + rt1719_detach(data);
> > +
> > + if (events & RT1719_INT_RX_SRCCAP)
> > + rt1719_update_source_pdos(data);
> > +
> > + if (events & RT1719_INT_PE_SNK_RDY) {
> > + complete(&data->req_completion);
> > + rt1719_update_pwr_opmode(data);
> > + }
> > +
> > + /* Write 1 to clear already handled events */
> > + rt1719_write32(data, RT1719_REG_EVENTS, events);
> > +
> > + return IRQ_HANDLED;
> > +}
> > +
> > +static int rt1719_irq_init(struct rt1719_data *data)
> > +{
> > + struct i2c_client *i2c = to_i2c_client(data->dev);
> > + u32 irq_enable;
> > + int ret;
> > +
> > + irq_enable = RT1719_INT_DRSW_ACCEPT | RT1719_INT_RX_SRCCAP |
> > + RT1719_INT_VBUS_DCT | RT1719_INT_VBUS_PRESENT |
> > + RT1719_INT_PE_SNK_RDY;
> > +
> > + ret = rt1719_write32(data, RT1719_REG_MASKS, irq_enable);
> > + if (ret) {
> > + dev_err(&i2c->dev, "Failed to config irq enable\n");
> > + return ret;
> > + }
> > +
> > + return devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
> > + rt1719_irq_handler, IRQF_ONESHOT,
> > + dev_name(&i2c->dev), data);
> > +}
> > +
> > +static int rt1719_init_attach_state(struct rt1719_data *data)
> > +{
> > + u32 conn_info, irq_clear;
> > + u16 conn_stat;
> > + int ret;
> > +
> > + irq_clear = RT1719_INT_DRSW_ACCEPT | RT1719_INT_RX_SRCCAP |
> > + RT1719_INT_VBUS_DCT | RT1719_INT_VBUS_PRESENT |
> > + RT1719_INT_PE_SNK_RDY;
> > +
> > + ret = rt1719_read32(data, RT1719_REG_POLICYINFO, &conn_info);
> > + ret |= rt1719_read16(data, RT1719_REG_STATS, &conn_stat);
> > + ret |= rt1719_write32(data, RT1719_REG_EVENTS, irq_clear);
> > + if (ret)
> > + return ret;
> > +
> > + data->conn_info = conn_info;
> > + data->conn_stat = conn_stat;
> > +
> > + if (conn_info & RT1719_ATTACHDEV_MASK)
> > + rt1719_attach(data);
> > +
> > + if (conn_info & RT1719_PE_EXP_CONTRACT) {
> > + rt1719_update_source_pdos(data);
> > + rt1719_update_pwr_opmode(data);
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +#define RT1719_PSEL_CAPINFO(_lomask, _milliwatt, _himask, _milliamp) { \
> > + .lomask = _lomask, \
> > + .milliwatt = _milliwatt, \
> > + .himask = _himask, \
> > + .milliamp = _milliamp, \
> > +}
> > +
> > +static const struct rt1719_psel_cap rt1719_psel_caps[] = {
> > + RT1719_PSEL_CAPINFO(0x18, 75000, 0x10, 5000),
> > + RT1719_PSEL_CAPINFO(0x18, 60000, 0x10, 4500),
> > + RT1719_PSEL_CAPINFO(0x18, 45000, 0x10, 4000),
> > + RT1719_PSEL_CAPINFO(0x18, 30000, 0x10, 3500),
> > + RT1719_PSEL_CAPINFO(0x18, 25000, 0x10, 3000),
> > + RT1719_PSEL_CAPINFO(0x18, 20000, 0x10, 2500),
> > + RT1719_PSEL_CAPINFO(0x18, 15000, 0x10, 2000),
> > + RT1719_PSEL_CAPINFO(0x18, 10000, 0x10, 1000),
> > + RT1719_PSEL_CAPINFO(0x1C, 60000, 0x1F, 5000),
> > + RT1719_PSEL_CAPINFO(0x1C, 45000, 0x1F, 4500),
> > + RT1719_PSEL_CAPINFO(0x1C, 30000, 0x1F, 4000),
> > + RT1719_PSEL_CAPINFO(0x1C, 24000, 0x1F, 3500),
> > + RT1719_PSEL_CAPINFO(0x1C, 15000, 0x1F, 3000),
> > + RT1719_PSEL_CAPINFO(0x1C, 10000, 0x1F, 2500),
> > + RT1719_PSEL_CAPINFO(0x0C, 60000, 0x1F, 2000),
> > + RT1719_PSEL_CAPINFO(0x0C, 45000, 0x1F, 1000),
> > + RT1719_PSEL_CAPINFO(0x0C, 36000, 0x08, 5000),
> > + RT1719_PSEL_CAPINFO(0x0C, 30000, 0x08, 4500),
> > + RT1719_PSEL_CAPINFO(0x0C, 24000, 0x08, 4000),
> > + RT1719_PSEL_CAPINFO(0x0C, 15000, 0x08, 3500),
> > + RT1719_PSEL_CAPINFO(0x0C, 10000, 0x08, 3000),
> > + RT1719_PSEL_CAPINFO(0x1E, 45000, 0x08, 2500),
> > + RT1719_PSEL_CAPINFO(0x1E, 36000, 0x08, 2000),
> > + RT1719_PSEL_CAPINFO(0x1E, 27000, 0x08, 1500),
> > + RT1719_PSEL_CAPINFO(0x1E, 20000, 0x08, 1000),
> > + RT1719_PSEL_CAPINFO(0x1E, 15000, 0x0F, 5000),
> > + RT1719_PSEL_CAPINFO(0x1E, 9000, 0x0F, 4500),
> > + RT1719_PSEL_CAPINFO(0x0E, 45000, 0x0F, 4000),
> > + RT1719_PSEL_CAPINFO(0x0E, 36000, 0x0F, 3500),
> > + RT1719_PSEL_CAPINFO(0x0E, 27000, 0x0F, 3000),
> > + RT1719_PSEL_CAPINFO(0x0E, 20000, 0x0F, 2500),
> > + RT1719_PSEL_CAPINFO(0x0E, 15000, 0x0F, 2000),
> > + RT1719_PSEL_CAPINFO(0x0E, 9000, 0x0F, 1500),
> > + RT1719_PSEL_CAPINFO(0x06, 45000, 0x0F, 1000),
> > + RT1719_PSEL_CAPINFO(0x06, 36000, 0x0F, 500),
> > + RT1719_PSEL_CAPINFO(0x06, 27000, 0x04, 5000),
> > + RT1719_PSEL_CAPINFO(0x06, 24000, 0x04, 4500),
> > + RT1719_PSEL_CAPINFO(0x06, 18000, 0x04, 4000),
> > + RT1719_PSEL_CAPINFO(0x06, 12000, 0x04, 3500),
> > + RT1719_PSEL_CAPINFO(0x06, 9000, 0x04, 3000),
> > + RT1719_PSEL_CAPINFO(0x1F, 25000, 0x04, 2500),
> > + RT1719_PSEL_CAPINFO(0x1F, 20000, 0x04, 2000),
> > + RT1719_PSEL_CAPINFO(0x1F, 15000, 0x04, 1500),
> > + RT1719_PSEL_CAPINFO(0x1F, 10000, 0x04, 1000),
> > + RT1719_PSEL_CAPINFO(0x1F, 7500, 0x07, 5000),
> > + RT1719_PSEL_CAPINFO(0x0F, 25000, 0x07, 4500),
> > + RT1719_PSEL_CAPINFO(0x0F, 20000, 0x07, 4000),
> > + RT1719_PSEL_CAPINFO(0x0F, 15000, 0x07, 3500),
> > + RT1719_PSEL_CAPINFO(0x0F, 10000, 0x07, 3000),
> > + RT1719_PSEL_CAPINFO(0x0F, 7500, 0x07, 2500),
> > + RT1719_PSEL_CAPINFO(0x07, 25000, 0x07, 2000),
> > + RT1719_PSEL_CAPINFO(0x07, 20000, 0x07, 1500),
> > + RT1719_PSEL_CAPINFO(0x07, 15000, 0x07, 1000),
> > + RT1719_PSEL_CAPINFO(0x07, 10000, 0x07, 500),
> > + RT1719_PSEL_CAPINFO(0x07, 7500, 0x03, 5000),
> > + RT1719_PSEL_CAPINFO(0x03, 25000, 0x03, 4500),
> > + RT1719_PSEL_CAPINFO(0x03, 20000, 0x03, 4000),
> > + RT1719_PSEL_CAPINFO(0x03, 15000, 0x03, 3500),
> > + RT1719_PSEL_CAPINFO(0x03, 10000, 0x03, 3000),
> > + RT1719_PSEL_CAPINFO(0x03, 7500, 0x03, 2500),
> > + RT1719_PSEL_CAPINFO(0x01, 15000, 0x03, 2000),
> > + RT1719_PSEL_CAPINFO(0x01, 10000, 0x03, 1500),
> > + RT1719_PSEL_CAPINFO(0x01, 7500, 0x03, 1000),
> > + RT1719_PSEL_CAPINFO(0x01, 2500, 0x03, 500)
> > +};
> > +
> > +static u16 rt1719_gen_snkcap_by_current(const struct rt1719_psel_cap *psel_cap,
> > + enum rt1719_snkcap capsel)
> > +{
> > + u16 cap = RT1719_PSEL_SUPPORT;
> > +
> > + if (!(psel_cap->himask & BIT(capsel)))
> > + return 0;
> > +
> > + cap |= psel_cap->milliamp / 10;
> > + return cap;
> > +}
> > +
> > +static u16 rt1719_gen_snkcap_by_watt(const struct rt1719_psel_cap *psel_cap,
> > + enum rt1719_snkcap capsel)
> > +{
> > + u32 volt_div[RT1719_MAX_SNKCAP] = { 5, 9, 12, 15, 20 };
> > + u16 cap = RT1719_PSEL_SUPPORT;
> > +
> > + if (!(psel_cap->lomask & BIT(capsel)))
> > + return 0;
> > +
> > + cap |= min(psel_cap->milliwatt / volt_div[capsel], (u32)5000) / 10;
> > + return cap;
> > +}
> > +
> > +static u16 rt1719_gen_snkcap(unsigned int pselinfo, enum rt1719_snkcap capsel)
> > +{
> > + int psel = FIELD_GET(RT1719_LATPSEL_MASK, pselinfo);
> > + const struct rt1719_psel_cap *psel_cap;
> > + bool by_current = false;
> > +
> > + if (pselinfo & RT1719_TBLSEL_MASK)
> > + by_current = true;
> > +
> > + psel_cap = rt1719_psel_caps + psel;
> > + if (by_current)
> > + return rt1719_gen_snkcap_by_current(psel_cap, capsel);
> > +
> > + return rt1719_gen_snkcap_by_watt(psel_cap, capsel);
> > +}
> > +
> > +static int rt1719_get_caps(struct rt1719_data *data)
> > +{
> > + unsigned int pselinfo, usbinfo;
> > + int i, ret;
> > +
> > + ret = regmap_read(data->regmap, RT1719_REG_PSELINFO, &pselinfo);
> > + ret |= regmap_read(data->regmap, RT1719_REG_USBSETINFO, &usbinfo);
> > + if (ret)
> > + return ret;
> > +
> > + for (i = 0; i < RT1719_MAX_SNKCAP; i++)
> > + data->snkcaps[i] = rt1719_gen_snkcap(pselinfo, i);
> > +
> > + usbinfo = FIELD_GET(RT1719_USBINFO_MASK, usbinfo);
> > + if (usbinfo == RT1719_USB_DFPUFP)
> > + data->drswap_support = true;
> > +
> > + return 0;
> > +}
> > +
> > +static int rt1719_check_exist(struct rt1719_data *data)
> > +{
> > + u16 pid;
> > + int ret;
> > +
> > + ret = rt1719_read16(data, RT1719_REG_VENID, &pid);
> > + if (ret)
> > + return ret;
> > +
> > + if (pid != RT1719_UNIQUE_PID) {
> > + dev_err(data->dev, "Incorrect PID 0x%04x\n", pid);
> > + return -ENODEV;
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static const struct regmap_config rt1719_regmap_config = {
> > + .reg_bits = 8,
> > + .val_bits = 8,
> > + .max_register = 0xff,
> > +};
> > +
> > +static int rt1719_probe(struct i2c_client *i2c)
> > +{
> > + struct rt1719_data *data;
> > + struct fwnode_handle *fwnode;
> > + struct typec_capability typec_cap = { };
> > + int ret;
> > +
> > + data = devm_kzalloc(&i2c->dev, sizeof(*data), GFP_KERNEL);
> > + if (!data)
> > + return -ENOMEM;
> > +
> > + data->dev = &i2c->dev;
> > + init_completion(&data->req_completion);
> > +
> > + data->regmap = devm_regmap_init_i2c(i2c, &rt1719_regmap_config);
> > + if (IS_ERR(data->regmap)) {
> > + ret = PTR_ERR(data->regmap);
> > + dev_err(&i2c->dev, "Failed to init regmap (%d)\n", ret);
> > + return ret;
> > + }
> > +
> > + ret = rt1719_check_exist(data);
> > + if (ret)
> > + return ret;
> > +
> > + ret = rt1719_get_caps(data);
> > + if (ret)
> > + return ret;
> > +
> > + /*
> > + * This fwnode has a "compatible" property, but is never populated as a
> > + * struct device. Instead we simply parse it to read the properties.
> > + * This it breaks fw_devlink=on. To maintain backward compatibility
> > + * with existing DT files, we work around this by deleting any
> > + * fwnode_links to/from this fwnode.
> > + */
> > + fwnode = device_get_named_child_node(&i2c->dev, "connector");
> > + if (!fwnode)
> > + return -ENODEV;
> > +
> > + fw_devlink_purge_absent_suppliers(fwnode);
> > +
> > + data->role_sw = fwnode_usb_role_switch_get(fwnode);
> > + if (IS_ERR(data->role_sw)) {
> > + ret = PTR_ERR(data->role_sw);
> > + dev_err(&i2c->dev, "Failed to get usb role switch (%d)\n", ret);
> > + goto err_fwnode_put;
> > + }
> > +
> > + ret = devm_rt1719_psy_register(data);
> > + if (ret) {
> > + dev_err(&i2c->dev, "Failed to register psy (%d)\n", ret);
> > + goto err_role_put;
> > + }
> > +
> > + typec_cap.revision = USB_TYPEC_REV_1_2;
> > + typec_cap.pd_revision = 0x300; /* USB-PD spec release 3.0 */
> > + typec_cap.type = TYPEC_PORT_SNK;
> > + typec_cap.data = TYPEC_PORT_DRD;
> > + typec_cap.ops = &rt1719_port_ops;
> > + typec_cap.fwnode = fwnode;
> > + typec_cap.driver_data = data;
> > + typec_cap.accessory[0] = TYPEC_ACCESSORY_DEBUG;
> > +
> > + data->partner_desc.identity = &data->partner_ident;
> > +
> > + data->port = typec_register_port(&i2c->dev, &typec_cap);
> > + if (IS_ERR(data->port)) {
> > + ret = PTR_ERR(data->port);
> > + dev_err(&i2c->dev, "Failed to register typec port (%d)\n", ret);
> > + goto err_role_put;
> > + }
> > +
> > + ret = rt1719_init_attach_state(data);
> > + if (ret) {
> > + dev_err(&i2c->dev, "Failed to init attach state (%d)\n", ret);
> > + goto err_role_put;
> > + }
> > +
> > + ret = rt1719_irq_init(data);
> > + if (ret) {
> > + dev_err(&i2c->dev, "Failed to init irq\n");
> > + goto err_role_put;
> > + }
> > +
> > + fwnode_handle_put(fwnode);
> > +
> > + i2c_set_clientdata(i2c, data);
> > +
> > + return 0;
> > +
> > +err_role_put:
> > + usb_role_switch_put(data->role_sw);
> > +err_fwnode_put:
> > + fwnode_handle_put(fwnode);
> > +
> > + return ret;
> > +}
> > +
> > +static int rt1719_remove(struct i2c_client *i2c)
> > +{
> > + struct rt1719_data *data = i2c_get_clientdata(i2c);
> > +
> > + typec_unregister_port(data->port);
> > + usb_role_switch_put(data->role_sw);
> > +
> > + return 0;
> > +}
> > +
> > +static const struct of_device_id __maybe_unused rt1719_device_table[] = {
> > + { .compatible = "richtek,rt1719", },
> > + { }
> > +};
> > +MODULE_DEVICE_TABLE(of, rt1719_device_table);
> > +
> > +static struct i2c_driver rt1719_driver = {
> > + .driver = {
> > + .name = "rt1719",
> > + .of_match_table = rt1719_device_table,
> > + },
> > + .probe_new = rt1719_probe,
> > + .remove = rt1719_remove,
> > +};
> > +module_i2c_driver(rt1719_driver);
> > +
> > +MODULE_AUTHOR("ChiYuan Huang <cy_huang@xxxxxxxxxxx>");
> > +MODULE_DESCRIPTION("Richtek RT1719 Sink Only USBPD Controller Driver");
> > +MODULE_LICENSE("GPL v2");
>
> --
> heikki
