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Message-ID: <YqM9wMPWlUgqUhcm@kuha.fi.intel.com>
Date: Fri, 10 Jun 2022 15:49:04 +0300
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Xin Ji <xji@...logixsemi.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
bliang@...logixsemi.com, qwen@...logixsemi.com,
jli@...logixsemi.com, linux-kernel@...r.kernel.org,
linux-usb@...r.kernel.org
Subject: Re: [PATCH v9 3/3] usb: typec: anx7411: Add Analogix PD ANX7411
support
Hi,
Few more comments below.
On Wed, Mar 09, 2022 at 10:34:03AM +0800, Xin Ji wrote:
> Add driver for analogix ANX7411 USB Type-C DRP port controller.
>
> Signed-off-by: Xin Ji <xji@...logixsemi.com>
> ---
> V6 -> V7: Fix Heikki's comment
> Rebase on Greg's latest usb-next branch
> Move tcpci.h to include/linux/usb/
> Remove double definition
> V5 -> V6: Fix Heikki's comment
> V4 -> V5: Fix Greg h-k comment, remove DEBUG define
> V3 -> V4: Fix compiling waring
> V2 -> V3: Add changelog history
> V1 -> V2: Fix compiling warning issue
> ---
> drivers/usb/typec/Kconfig | 11 +
> drivers/usb/typec/Makefile | 1 +
> drivers/usb/typec/anx7411.c | 1327 +++++++++++++++++++++++++++++++++++
> drivers/usb/typec/anx7411.h | 265 +++++++
> 4 files changed, 1604 insertions(+)
> create mode 100644 drivers/usb/typec/anx7411.c
> create mode 100644 drivers/usb/typec/anx7411.h
>
> diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig
> index 8f921213b17d..eaa4c088aafa 100644
> --- a/drivers/usb/typec/Kconfig
> +++ b/drivers/usb/typec/Kconfig
> @@ -52,6 +52,17 @@ source "drivers/usb/typec/ucsi/Kconfig"
>
> source "drivers/usb/typec/tipd/Kconfig"
>
> +config TYPEC_ANX7411
> + tristate "Analogix ANX7411 Type-C DRP Port controller driver"
> + depends on I2C
> + depends on USB_ROLE_SWITCH
> + help
> + Say Y or M here if your system has Analogix ANX7411 Type-C DRP Port
> + controller driver.
> +
> + If you choose to build this driver as a dynamically linked module, the
> + module will be called anx7411.ko.
> +
> config TYPEC_RT1719
> tristate "Richtek RT1719 Sink Only Type-C controller driver"
> depends on USB_ROLE_SWITCH || !USB_ROLE_SWITCH
> diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile
> index 43626acc0aaf..e4e4db55a55d 100644
> --- a/drivers/usb/typec/Makefile
> +++ b/drivers/usb/typec/Makefile
> @@ -6,6 +6,7 @@ obj-$(CONFIG_TYPEC) += altmodes/
> obj-$(CONFIG_TYPEC_TCPM) += tcpm/
> obj-$(CONFIG_TYPEC_UCSI) += ucsi/
> obj-$(CONFIG_TYPEC_TPS6598X) += tipd/
> +obj-$(CONFIG_TYPEC_ANX7411) += anx7411.o
> obj-$(CONFIG_TYPEC_HD3SS3220) += hd3ss3220.o
> obj-$(CONFIG_TYPEC_QCOM_PMIC) += qcom-pmic-typec.o
> obj-$(CONFIG_TYPEC_STUSB160X) += stusb160x.o
> diff --git a/drivers/usb/typec/anx7411.c b/drivers/usb/typec/anx7411.c
> new file mode 100644
> index 000000000000..ede39dea8366
> --- /dev/null
> +++ b/drivers/usb/typec/anx7411.c
> @@ -0,0 +1,1327 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +
> +/*
> + * Copyright(c) 2022, Analogix Semiconductor. All rights reserved.
> + *
> + */
> +#include <linux/gpio/consumer.h>
> +#include <linux/i2c.h>
> +#include <linux/interrupt.h>
> +#include <linux/iopoll.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/mutex.h>
> +#include <linux/of_graph.h>
> +#include <linux/of_platform.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/slab.h>
> +#include <linux/types.h>
> +#include <linux/usb/pd.h>
> +#include <linux/usb/role.h>
> +#include <linux/usb/tcpci.h>
> +#include <linux/usb/typec.h>
> +#include <linux/usb/typec_dp.h>
> +#include <linux/usb/typec_mux.h>
> +#include <linux/workqueue.h>
> +#include <linux/power_supply.h>
> +
> +#include "anx7411.h"
> +
> +static u8 snk_identity[] = {
> + LOBYTE(VID_ANALOGIX), HIBYTE(VID_ANALOGIX), 0x00, 0x82, /* snk_id_hdr */
> + 0x00, 0x00, 0x00, 0x00, /* snk_cert */
> + 0x00, 0x00, LOBYTE(PID_ANALOGIX), HIBYTE(PID_ANALOGIX), /* 5snk_ama */
> +};
> +
> +static u8 dp_caps[4] = {0xC6, 0x00, 0x00, 0x00};
> +
> +static int anx7411_reg_read(struct i2c_client *client,
> + u8 reg_addr)
> +{
> + return i2c_smbus_read_byte_data(client, reg_addr);
> +}
> +
> +static int anx7411_reg_block_read(struct i2c_client *client,
> + u8 reg_addr, u8 len, u8 *buf)
> +{
> + return i2c_smbus_read_i2c_block_data(client, reg_addr, len, buf);
> +}
> +
> +static int anx7411_reg_write(struct i2c_client *client,
> + u8 reg_addr, u8 reg_val)
> +{
> + return i2c_smbus_write_byte_data(client, reg_addr, reg_val);
> +}
> +
> +static int anx7411_reg_block_write(struct i2c_client *client,
> + u8 reg_addr, u8 len, u8 *buf)
> +{
> + return i2c_smbus_write_i2c_block_data(client, reg_addr, len, buf);
> +}
> +
> +static struct anx7411_i2c_select anx7411_i2c_addr[] = {
> + {TCPC_ADDRESS1, SPI_ADDRESS1},
> + {TCPC_ADDRESS2, SPI_ADDRESS2},
> + {TCPC_ADDRESS3, SPI_ADDRESS3},
> + {TCPC_ADDRESS4, SPI_ADDRESS4},
> +};
> +
> +static int anx7411_detect_power_mode(struct anx7411_data *ctx)
> +{
> + int ret;
> + int mode;
> +
> + ret = anx7411_reg_read(ctx->spi_client, REQUEST_CURRENT);
> + if (ret < 0)
> + return ret;
> +
> + ctx->typec.request_current = ret * CURRENT_UNIT; /* 50ma per unit */
> +
> + ret = anx7411_reg_read(ctx->spi_client, REQUEST_VOLTAGE);
> + if (ret < 0)
> + return ret;
> +
> + ctx->typec.request_voltage = ret * VOLTAGE_UNIT; /* 100mv per unit */
> +
> + if (ctx->psy_online == ANX7411_PSY_OFFLINE) {
> + ctx->psy_online = ANX7411_PSY_FIXED_ONLINE;
> + ctx->usb_type = POWER_SUPPLY_USB_TYPE_PD;
> + power_supply_changed(ctx->psy);
> + }
> +
> + if (!ctx->typec.cc_orientation_valid)
> + return 0;
> +
> + if (ctx->typec.cc_connect == CC1_CONNECTED)
> + mode = CC1_RP(ctx->typec.cc_status);
> + else
> + mode = CC2_RP(ctx->typec.cc_status);
> + if (mode) {
> + typec_set_pwr_opmode(ctx->typec.port, mode - 1);
> + return 0;
> + }
> +
> + typec_set_pwr_opmode(ctx->typec.port, TYPEC_PWR_MODE_PD);
> +
> + return 0;
> +}
> +
> +static int anx7411_register_partner(struct anx7411_data *ctx,
> + int pd, int accessory)
> +{
> + struct typec_partner_desc desc;
> +
> + if (ctx->typec.partner)
> + return 0;
> +
> + desc.usb_pd = pd;
> + desc.accessory = accessory;
> + desc.identity = NULL;
> + ctx->typec.partner = typec_register_partner(ctx->typec.port, &desc);
> + if (IS_ERR(ctx->typec.partner)) {
> + ctx->typec.partner = NULL;
> + return PTR_ERR(ctx->typec.partner);
> + }
> +
> + return 0;
> +}
> +
> +static int anx7411_detect_cc_orientation(struct anx7411_data *ctx)
> +{
> + int ret;
> + int cc1_rd, cc2_rd;
> + int cc1_ra, cc2_ra;
> + int cc1_rp, cc2_rp;
> +
> + ret = anx7411_reg_read(ctx->spi_client, CC_STATUS);
> + if (ret < 0)
> + return ret;
> +
> + ctx->typec.cc_status = ret;
> +
> + cc1_rd = ret & CC1_RD ? 1 : 0;
> + cc2_rd = ret & CC2_RD ? 1 : 0;
> + cc1_ra = ret & CC1_RA ? 1 : 0;
> + cc2_ra = ret & CC2_RA ? 1 : 0;
> + cc1_rp = CC1_RP(ret);
> + cc2_rp = CC2_RP(ret);
> +
> + /* Debug cable, nothing to do */
> + if (cc1_rd && cc2_rd) {
> + ctx->typec.cc_orientation_valid = 0;
> + anx7411_register_partner(ctx, 0, TYPEC_ACCESSORY_DEBUG);
> + return 0;
> + }
> +
> + if (cc1_ra && cc2_ra) {
> + ctx->typec.cc_orientation_valid = 0;
> + anx7411_register_partner(ctx, 0, TYPEC_ACCESSORY_AUDIO);
> + return 0;
> + }
> +
> + ctx->typec.cc_orientation_valid = 1;
> +
> + anx7411_register_partner(ctx, 1, TYPEC_ACCESSORY_NONE);
> +
> + if (cc1_rd || cc1_rp) {
> + typec_set_orientation(ctx->typec.port,
> + TYPEC_ORIENTATION_NORMAL);
That fits on one line.
> + ctx->typec.cc_connect = CC1_CONNECTED;
> + }
> +
> + if (cc2_rd || cc2_rp) {
> + typec_set_orientation(ctx->typec.port,
> + TYPEC_ORIENTATION_REVERSE);
Ditto.
> + ctx->typec.cc_connect = CC2_CONNECTED;
> + }
> +
> + return 0;
> +}
> +
> +static int anx7411_set_mux(struct anx7411_data *ctx, int pin_assignment)
> +{
> + int mode = TYPEC_STATE_SAFE;
> +
> + switch (pin_assignment) {
> + case SELECT_PIN_ASSIGMENT_U:
> + /* default 4 line USB 3.1 */
> + mode = TYPEC_STATE_MODAL;
> + break;
> + case SELECT_PIN_ASSIGMENT_C:
> + case SELECT_PIN_ASSIGMENT_E:
> + /* 4 line DP */
> + mode = TYPEC_STATE_SAFE;
> + break;
> + case SELECT_PIN_ASSIGMENT_D:
> + /* 2 line DP, 2 line USB */
> + mode = TYPEC_MODE_USB3;
> + break;
> + default:
> + mode = TYPEC_STATE_SAFE;
> + break;
> + }
> +
> + ctx->typec.pin_assignment = pin_assignment;
> +
> + return typec_set_mode(ctx->typec.port, mode);
> +}
> +
> +static void anx7411_set_usb_role(struct anx7411_data *ctx, enum usb_role role)
> +{
> + if (!ctx->typec.role_sw)
> + return;
> +
> + usb_role_switch_set_role(ctx->typec.role_sw, role);
> +}
> +
> +static int anx7411_data_role_detect(struct anx7411_data *ctx)
> +{
> + int ret;
> +
> + ret = anx7411_reg_read(ctx->spi_client, SYSTEM_STSTUS);
> + if (ret < 0)
> + return ret;
> +
> + ctx->typec.data_role = (ret & DATA_ROLE) ? TYPEC_HOST : TYPEC_DEVICE;
> + ctx->typec.vconn_role = (ret & VCONN_STATUS) ? TYPEC_SOURCE : TYPEC_SINK;
> +
> + typec_set_data_role(ctx->typec.port, ctx->typec.data_role);
> + typec_set_vconn_role(ctx->typec.port, ctx->typec.vconn_role);
> +
> + if (ctx->typec.data_role == TYPEC_HOST)
> + anx7411_set_usb_role(ctx, USB_ROLE_HOST);
> + else
> + anx7411_set_usb_role(ctx, USB_ROLE_DEVICE);
> +
> + return 0;
> +}
> +
> +static int anx7411_power_role_detect(struct anx7411_data *ctx)
> +{
> + int ret;
> +
> + ret = anx7411_reg_read(ctx->spi_client, SYSTEM_STSTUS);
> + if (ret < 0)
> + return ret;
> +
> + ctx->typec.power_role = (ret & SINK_STATUS) ? TYPEC_SINK : TYPEC_SOURCE;
> +
> + if (ctx->typec.power_role == TYPEC_SOURCE) {
> + ctx->typec.request_current = DEF_1_5A;
> + ctx->typec.request_voltage = DEF_5V;
> + }
> +
> + typec_set_pwr_role(ctx->typec.port, ctx->typec.power_role);
> +
> + return 0;
> +}
> +
> +static int anx7411_cc_status_detect(struct anx7411_data *ctx)
> +{
> + anx7411_detect_cc_orientation(ctx);
> + anx7411_detect_power_mode(ctx);
> +
> + return 0;
> +}
> +
> +static int anx7411_partner_unregister_altmode(struct anx7411_data *ctx)
> +{
> + int i;
> +
> + ctx->typec.dp_altmode_enter = 0;
> + ctx->typec.cust_altmode_enter = 0;
> +
> + for (i = 0; i < MAX_ALTMODE; i++)
> + if (ctx->typec.amode[i]) {
> + typec_unregister_altmode(ctx->typec.amode[i]);
> + ctx->typec.amode[i] = NULL;
> + }
> +
> + ctx->typec.pin_assignment = 0;
> + return 0;
> +}
> +
> +static int anx7411_typec_register_altmode(struct anx7411_data *ctx,
> + int svid, int vdo)
> +{
> + struct device *dev = &ctx->spi_client->dev;
> + struct typec_altmode_desc desc;
> + int i;
> +
> + desc.svid = svid;
> + desc.vdo = vdo;
> +
> + for (i = 0; i < MAX_ALTMODE; i++)
> + if (!ctx->typec.amode[i])
> + break;
> +
> + desc.mode = i + 1; /* start with 1 */
> +
> + if (i >= MAX_ALTMODE) {
> + dev_err(dev, "no altmode space for registering\n");
> + return -ENOMEM;
> + }
> +
> + ctx->typec.amode[i] = typec_partner_register_altmode(ctx->typec.partner,
> + &desc);
> + if (IS_ERR(ctx->typec.amode[i])) {
> + dev_err(dev, "failed to register altmode\n");
> + ctx->typec.amode[i] = NULL;
> + return PTR_ERR(ctx->typec.amode);
> + }
> +
> + return 0;
> +}
> +
> +static int anx7411_unregister_partner(struct anx7411_data *ctx)
> +{
> + if (ctx->typec.partner) {
> + typec_unregister_partner(ctx->typec.partner);
> + ctx->typec.partner = NULL;
> + }
> +
> + return 0;
> +}
> +
> +static int anx7411_update_altmode(struct anx7411_data *ctx, int svid)
> +{
> + int i;
> +
> + if (svid == DP_SVID)
> + ctx->typec.dp_altmode_enter = 1;
> + else
> + ctx->typec.cust_altmode_enter = 1;
> +
> + for (i = 0; i < MAX_ALTMODE; i++) {
> + if (!ctx->typec.amode[i])
> + continue;
> +
> + if (ctx->typec.amode[i]->svid == svid) {
> + typec_altmode_update_active(ctx->typec.amode[i], true);
> + typec_altmode_notify(ctx->typec.amode[i],
> + ctx->typec.pin_assignment,
> + &ctx->typec.data);
> + break;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int anx7411_register_altmode(struct anx7411_data *ctx,
> + bool dp_altmode, u8 *buf)
> +{
> + int ret;
> + int svid;
> + int mid;
> +
> + if (!ctx->typec.partner)
> + return 0;
> +
> + svid = DP_SVID;
> + if (dp_altmode) {
> + mid = buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
> +
> + return anx7411_typec_register_altmode(ctx, svid, mid);
> + }
> +
> + svid = (buf[3] << 8) | buf[2];
> + if ((buf[0] & VDM_CMD_AND_ACK_MASK) != (VDM_ACK | VDM_CMD_ENTER_MODE))
> + return anx7411_update_altmode(ctx, svid);
> +
> + if ((buf[0] & VDM_CMD_AND_ACK_MASK) != (VDM_ACK | VDM_CMD_DIS_MOD))
> + return 0;
> +
> + mid = buf[4] | (buf[5] << 8) | (buf[6] << 16) | (buf[7] << 24);
> +
> + ret = anx7411_typec_register_altmode(ctx, svid, mid);
> + if (ctx->typec.cust_altmode_enter)
> + ret |= anx7411_update_altmode(ctx, svid);
> +
> + return ret;
> +}
> +
> +static int anx7411_parse_cmd(struct anx7411_data *ctx, u8 type, u8 *buf, u8 len)
> +{
> + struct device *dev = &ctx->spi_client->dev;
> + u8 cur_50ma, vol_100mv;
> +
> + dev_info(dev, "received message: type:0x%.02x, len:%d, buf[0]:%d\n",
> + type, len, buf[0]);
That looks like noise to me.
If you need that kind of messages for debugging, you can use debugfs, for
example tracepoints:
https://www.kernel.org/doc/html/latest/trace/tracepoints.html
> + switch (type) {
> + case TYPE_SRC_CAP:
> + cur_50ma = anx7411_reg_read(ctx->spi_client, REQUEST_CURRENT);
> + vol_100mv = anx7411_reg_read(ctx->spi_client, REQUEST_VOLTAGE);
> + dev_info(dev, "get current(%dma), voltage(%dmv), power(%dmw)\n",
> + cur_50ma * CURRENT_UNIT, vol_100mv * VOLTAGE_UNIT,
> + cur_50ma * vol_100mv * 5);
Noise.
> + ctx->typec.request_voltage = vol_100mv * VOLTAGE_UNIT;
> + ctx->typec.request_current = cur_50ma * CURRENT_UNIT;
> +
> + ctx->psy_online = ANX7411_PSY_FIXED_ONLINE;
> + ctx->usb_type = POWER_SUPPLY_USB_TYPE_PD;
> + power_supply_changed(ctx->psy);
> + break;
> + case TYPE_SNK_CAP:
> + break;
> + case TYPE_SVID:
> + break;
> + case TYPE_SNK_IDENTITY:
> + break;
> + case TYPE_GET_DP_ALT_ENTER:
> + /* DP alt mode enter success */
> + if (buf[0])
> + anx7411_update_altmode(ctx, DP_SVID);
> + break;
> + case TYPE_DP_ALT_ENTER:
> + /* Update DP altmode */
> + anx7411_update_altmode(ctx, DP_SVID);
> + break;
> + case TYPE_OBJ_REQ:
> + anx7411_detect_power_mode(ctx);
> + break;
> + case TYPE_DP_CONFIGURE:
> + anx7411_set_mux(ctx, buf[1]);
> + break;
> + case TYPE_DP_DISCOVER_MODES_INFO:
> + /* Make sure discover modes valid */
> + if (buf[0] | buf[1])
> + /* Register DP Altmode */
> + anx7411_register_altmode(ctx, 1, buf);
> + break;
> + case TYPE_VDM:
> + /* Register other altmode */
> + anx7411_register_altmode(ctx, 0, buf);
> + break;
> + default:
> + dev_err(dev, "ignore message(0x%.02x).\n", type);
> + break;
> + }
> +
> + return 0;
> +}
> +
> +static u8 checksum(struct device *dev, u8 *buf, u8 len)
> +{
> + u8 ret = 0;
> + u8 i;
> +
> + for (i = 0; i < len; i++)
> + ret += buf[i];
> +
> + return ret;
> +}
> +
> +static int anx7411_read_msg_ctrl_status(struct i2c_client *client)
> +{
> + return anx7411_reg_read(client, CMD_SEND_BUF);
> +}
> +
> +static int anx7411_wait_msg_empty(struct i2c_client *client)
> +{
> + int val;
> +
> + return readx_poll_timeout(anx7411_read_msg_ctrl_status,
> + client, val, (val < 0) || (val == 0),
> + 2000, 2000 * 150);
> +}
> +
> +static int anx7411_send_msg(struct anx7411_data *ctx, u8 type, u8 *buf, u8 size)
> +{
> + struct device *dev = &ctx->spi_client->dev;
> + u8 msg[MSG_LEN];
> + u8 crc;
> + int ret;
> +
> + if (size)
> + memcpy(&msg[MSG_RAWDATA], buf, size);
> + msg[MSG_TYPE] = type;
> + msg[MSG_HEADER] = size + 1;
> +
> + crc = checksum(dev, msg, size + HEADER_LEN);
> + msg[size + HEADER_LEN] = 0 - crc;
> +
> + ret = anx7411_wait_msg_empty(ctx->spi_client);
> + if (ret)
> + return ret;
> +
> + anx7411_reg_block_write(ctx->spi_client,
> + CMD_SEND_BUF + 1, size + HEADER_LEN,
> + &msg[MSG_TYPE]);
> + return anx7411_reg_write(ctx->spi_client, CMD_SEND_BUF,
> + msg[MSG_HEADER]);
> +}
> +
> +static int anx7411_process_cmd(struct anx7411_data *ctx)
> +{
> + struct device *dev = &ctx->spi_client->dev;
> + u8 msg[MSG_LEN];
> + u8 len;
> + u8 crc;
> +
> + /* Read message from firmware */
> + anx7411_reg_block_read(ctx->spi_client, CMD_RECV_BUF, MSG_LEN, msg);
> + anx7411_reg_write(ctx->spi_client, CMD_RECV_BUF, 0);
> +
> + if (!msg[MSG_HEADER])
> + return 0;
> +
> + len = msg[MSG_HEADER] & MSG_LEN_MASK;
> + crc = checksum(dev, msg, len + HEADER_LEN);
> + if (crc) {
> + dev_err(dev, "message error crc(0x%.02x)\n", crc);
> + return -ERANGE;
> + }
> +
> + return anx7411_parse_cmd(ctx, msg[MSG_TYPE],
> + &msg[MSG_RAWDATA], len - 1);
> +}
> +
> +static void anx7411_translate_payload(struct device *dev, __le32 *payload,
> + u32 *pdo, int nr, const char *type)
> +{
> + int i;
> +
> + if (nr > PDO_MAX_OBJECTS) {
> + dev_err(dev, "nr(%d) exceed PDO_MAX_OBJECTS(%d)\n",
> + nr, PDO_MAX_OBJECTS);
> +
> + return;
> + }
> +
> + for (i = 0; i < nr; i++)
> + payload[i] = cpu_to_le32(pdo[i]);
> +}
> +
> +static void anx7411_config(struct anx7411_data *ctx)
> +{
> + struct device *dev = &ctx->spi_client->dev;
> + struct typec_params *typecp = &ctx->typec;
> + __le32 payload[PDO_MAX_OBJECTS];
> +
> + /* Config PD FW work under PD 2.0 */
> + anx7411_reg_write(ctx->spi_client, PD_REV_INIT, PD_REV20);
> + anx7411_reg_write(ctx->tcpc_client, FW_CTRL_0,
> + UNSTRUCT_VDM_EN | DELAY_200MS |
> + VSAFE1 | FRS_EN);
> + anx7411_reg_write(ctx->spi_client, FW_CTRL_1,
> + AUTO_PD_EN | FORCE_SEND_RDO);
> +
> + /* Set VBUS current threshold */
> + anx7411_reg_write(ctx->tcpc_client, VBUS_THRESHOLD_H, 0xff);
> + anx7411_reg_write(ctx->tcpc_client, VBUS_THRESHOLD_L, 0x03);
> +
> + /* Fix dongle compatible issue */
> + anx7411_reg_write(ctx->tcpc_client, FW_PARAM,
> + anx7411_reg_read(ctx->tcpc_client, FW_PARAM) |
> + DONGLE_IOP);
> + anx7411_reg_write(ctx->spi_client, INT_MASK, 0);
> +
> + anx7411_reg_write(ctx->spi_client, PD_EXT_MSG_CTRL, 0xFF);
> +
> + if (typecp->caps_flags & HAS_SOURCE_CAP) {
> + anx7411_translate_payload(dev, payload, typecp->src_pdo,
> + typecp->src_pdo_nr, "source");
> + anx7411_send_msg(ctx, TYPE_SRC_CAP, (u8 *)&payload,
> + typecp->src_pdo_nr * 4);
> + anx7411_send_msg(ctx, TYPE_SNK_IDENTITY, snk_identity,
> + sizeof(snk_identity));
> + anx7411_send_msg(ctx, TYPE_SET_SNK_DP_CAP, dp_caps,
> + sizeof(dp_caps));
> + }
> +
> + if (typecp->caps_flags & HAS_SINK_CAP) {
> + anx7411_translate_payload(dev, payload, typecp->sink_pdo,
> + typecp->sink_pdo_nr, "sink");
> + anx7411_send_msg(ctx, TYPE_SNK_CAP, (u8 *)&payload,
> + typecp->sink_pdo_nr * 4);
> + }
> +
> + if (typecp->caps_flags & HAS_SINK_WATT) {
> + if (typecp->sink_watt) {
> + anx7411_reg_write(ctx->spi_client, MAX_POWER,
> + typecp->sink_watt);
> + /* Set min power to 1W */
> + anx7411_reg_write(ctx->spi_client, MIN_POWER, 2);
> + }
> +
> + if (typecp->sink_voltage)
> + anx7411_reg_write(ctx->spi_client, MAX_VOLTAGE,
> + typecp->sink_voltage);
> + }
> +
> + if (!typecp->caps_flags)
> + usleep_range(5000, 6000);
> +
> + ctx->fw_version = anx7411_reg_read(ctx->spi_client, FW_VER);
> + ctx->fw_subversion = anx7411_reg_read(ctx->spi_client,
> + FW_SUBVER);
> +}
> +
> +static void anx7411_chip_standby(struct anx7411_data *ctx)
> +{
> + anx7411_reg_write(ctx->spi_client, OCM_CTRL_0,
> + anx7411_reg_read(ctx->spi_client, OCM_CTRL_0) |
> + OCM_RESET);
> + anx7411_reg_write(ctx->tcpc_client, ANALOG_CTRL_10, 0x80);
> + /* Set TCPC to RD and DRP enable */
> + anx7411_reg_write(ctx->tcpc_client,
> + TCPC_ROLE_CTRL,
> + TCPC_ROLE_CTRL_DRP |
> + (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) |
> + (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT));
> +
> + /* Send DRP toggle command */
> + anx7411_reg_write(ctx->tcpc_client, TCPC_COMMAND,
> + TCPC_CMD_LOOK4CONNECTION);
> +
> + /* Send TCPC enter standby command */
> + anx7411_reg_write(ctx->tcpc_client, TCPC_COMMAND, TCPC_CMD_I2C_IDLE);
> +}
> +
> +static void anx7411_work_func(struct work_struct *work)
> +{
> + int ret;
> + u8 buf[STATUS_LEN];
> + u8 int_change; /* Interrupt change */
> + u8 int_status; /* Firmware status update */
> + u8 alert0, alert1; /* Interrupt alert source */
> + struct anx7411_data *ctx = container_of(work, struct anx7411_data, work);
> +
> + mutex_lock(&ctx->lock);
> +
> + /* Read interrupt change status */
> + ret = anx7411_reg_block_read(ctx->spi_client, INT_STS, STATUS_LEN, buf);
> + if (ret < 0) {
> + /* Power standby mode, just return */
> + goto unlock;
> + }
> + int_change = buf[0];
> + int_status = buf[1];
> +
> + /* Read alert register */
> + ret = anx7411_reg_block_read(ctx->tcpc_client, ALERT_0, STATUS_LEN, buf);
> + if (ret < 0)
> + goto unlock;
> +
> + alert0 = buf[0];
> + alert1 = buf[1];
> +
> + /* Clear interrupt and alert status */
> + anx7411_reg_write(ctx->spi_client, INT_STS, 0);
> + anx7411_reg_write(ctx->tcpc_client, ALERT_0, alert0);
> + anx7411_reg_write(ctx->tcpc_client, ALERT_1, alert1);
> +
> + if (alert1 & INTP_POW_OFF) {
> + anx7411_partner_unregister_altmode(ctx);
> + anx7411_set_usb_role(ctx, USB_ROLE_NONE);
> + anx7411_unregister_partner(ctx);
> + ctx->psy_online = ANX7411_PSY_OFFLINE;
> + ctx->usb_type = POWER_SUPPLY_USB_TYPE_C;
> + ctx->typec.request_voltage = 0;
> + ctx->typec.request_current = 0;
> + power_supply_changed(ctx->psy);
> + anx7411_chip_standby(ctx);
> + goto unlock;
> + }
> +
> + if ((alert0 & SOFTWARE_INT) && (int_change & OCM_BOOT_UP)) {
> + anx7411_config(ctx);
> + anx7411_data_role_detect(ctx);
> + anx7411_power_role_detect(ctx);
> + anx7411_set_mux(ctx, SELECT_PIN_ASSIGMENT_C);
> + }
> +
> + if (alert0 & RECEIVED_MSG)
> + anx7411_process_cmd(ctx);
> +
> + ret = (int_status & DATA_ROLE) ? TYPEC_HOST : TYPEC_DEVICE;
> + if (ctx->typec.data_role != ret)
> + anx7411_data_role_detect(ctx);
> +
> + ret = (int_status & SINK_STATUS) ? TYPEC_SINK : TYPEC_SOURCE;
> + if (ctx->typec.power_role != ret)
> + anx7411_power_role_detect(ctx);
> +
> + if ((alert0 & SOFTWARE_INT) && (int_change & CC_STATUS_CHANGE))
> + anx7411_cc_status_detect(ctx);
> +
> +unlock:
> + mutex_unlock(&ctx->lock);
> +}
> +
> +static irqreturn_t anx7411_intr_isr(int irq, void *data)
> +{
> + struct anx7411_data *ctx = (struct anx7411_data *)data;
> +
> + queue_work(ctx->workqueue, &ctx->work);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int anx7411_register_i2c_dummy_clients(struct anx7411_data *ctx,
> + struct i2c_client *client)
> +{
> + int i;
> + u8 spi_addr;
> +
> + for (i = 0; i < sizeof(anx7411_i2c_addr); i++) {
> + if (client->addr == (anx7411_i2c_addr[i].tcpc_address >> 1)) {
> + spi_addr = anx7411_i2c_addr[i].spi_address >> 1;
> + ctx->spi_client = i2c_new_dummy_device(client->adapter,
> + spi_addr);
> + if (ctx->spi_client)
> + return 0;
> + }
> + }
> +
> + dev_err(&client->dev, "unable to get SPI slave\n");
> + return -ENOMEM;
> +}
> +
> +static void anx7411_port_unregister_altmodes(struct typec_altmode **adev)
> +{
> + int i;
> +
> + for (i = 0; i < MAX_ALTMODE; i++)
> + if (adev[i]) {
> + typec_unregister_altmode(adev[i]);
> + adev[i] = NULL;
> + }
> +}
> +
> +static int anx7411_usb_mux_set(struct typec_mux *mux,
> + struct typec_mux_state *state)
> +{
> + struct anx7411_data *ctx = typec_mux_get_drvdata(mux);
> + struct device *dev = &ctx->spi_client->dev;
> + int has_dp;
> +
> + has_dp = (state->alt && state->alt->svid == USB_TYPEC_DP_SID &&
> + state->alt->mode == USB_TYPEC_DP_MODE);
> + if (!has_dp)
> + dev_err(dev, "dp altmode not register\n");
> +
> + return 0;
> +}
> +
> +static int anx7411_usb_set_orientation(struct typec_switch *sw,
> + enum typec_orientation orientation)
> +{
> + /* No need set */
> +
> + return 0;
> +}
> +
> +static int anx7411_register_switch(struct anx7411_data *ctx,
> + struct device *dev,
> + struct fwnode_handle *fwnode)
> +{
> + struct typec_switch_desc sw_desc = { };
> +
> + sw_desc.fwnode = fwnode;
> + sw_desc.drvdata = ctx;
> + sw_desc.name = fwnode_get_name(fwnode);
> + sw_desc.set = anx7411_usb_set_orientation;
> +
> + ctx->typec.typec_switch = typec_switch_register(dev, &sw_desc);
> + if (IS_ERR(ctx->typec.typec_switch)) {
> + dev_err(dev, "switch register failed\n");
> + return PTR_ERR(ctx->typec.typec_switch);
> + }
> +
> + return 0;
> +}
> +
> +static int anx7411_register_mux(struct anx7411_data *ctx,
> + struct device *dev,
> + struct fwnode_handle *fwnode)
> +{
> + struct typec_mux_desc mux_desc = { };
> +
> + mux_desc.fwnode = fwnode;
> + mux_desc.drvdata = ctx;
> + mux_desc.name = fwnode_get_name(fwnode);
> + mux_desc.set = anx7411_usb_mux_set;
> +
> + ctx->typec.typec_mux = typec_mux_register(dev, &mux_desc);
> + if (IS_ERR(ctx->typec.typec_mux)) {
> + dev_err(dev, "mux register failed\n");
> + return PTR_ERR(ctx->typec.typec_mux);
> + }
> +
> + return 0;
> +}
> +
> +static void anx7411_unregister_mux(struct anx7411_data *ctx)
> +{
> + if (ctx->typec.typec_mux) {
> + typec_mux_unregister(ctx->typec.typec_mux);
> + ctx->typec.typec_mux = NULL;
> + }
> +}
> +
> +static void anx7411_unregister_switch(struct anx7411_data *ctx)
> +{
> + if (ctx->typec.typec_switch) {
> + typec_switch_unregister(ctx->typec.typec_switch);
> + ctx->typec.typec_switch = NULL;
> + }
> +}
> +
> +static int anx7411_typec_switch_probe(struct anx7411_data *ctx,
> + struct device *dev)
> +{
> + int ret;
> + struct device_node *node;
> +
> + node = of_find_node_by_name(dev->of_node, "orientation_switch");
> + if (!node) {
> + dev_info(dev, "no typec switch exist\n");
I'm not sure that's useful information either.
> + return 0;
> + }
> +
> + ret = anx7411_register_switch(ctx, dev, &node->fwnode);
> + if (ret) {
> + dev_err(dev, "failed register switch");
> + return ret;
> + }
> +
> + node = of_find_node_by_name(dev->of_node, "mode_switch");
> + if (!node) {
> + dev_err(dev, "no typec mux exist");
> + ret = -ENODEV;
> + goto unregister_switch;
> + }
> +
> + ret = anx7411_register_mux(ctx, dev, &node->fwnode);
> + if (ret) {
> + dev_err(dev, "failed register mode switch");
> + ret = -ENODEV;
> + goto unregister_switch;
> + }
> +
> + return 0;
> +
> +unregister_switch:
> + anx7411_unregister_switch(ctx);
> +
> + return ret;
> +}
> +
> +static int anx7411_typec_port_probe(struct anx7411_data *ctx,
> + struct device *dev)
> +{
> + struct typec_capability *cap = &ctx->typec.caps;
> + struct typec_params *typecp = &ctx->typec;
> + struct fwnode_handle *fwnode;
> + const char *buf;
> + int ret, i;
> +
> + fwnode = device_get_named_child_node(dev, "connector");
> + if (!fwnode)
> + return -EINVAL;
> +
> + ret = fwnode_property_read_string(fwnode, "power-role", &buf);
> + if (ret) {
> + dev_err(dev, "power-role not found: %d\n", ret);
> + return ret;
> + }
> +
> + ret = typec_find_port_power_role(buf);
> + if (ret < 0)
> + return ret;
> + cap->type = ret;
> +
> + ret = fwnode_property_read_string(fwnode, "data-role", &buf);
> + if (ret) {
> + dev_err(dev, "data-role not found: %d\n", ret);
> + return ret;
> + }
> +
> + ret = typec_find_port_data_role(buf);
> + if (ret < 0)
> + return ret;
> + cap->data = ret;
> +
> + ret = fwnode_property_read_string(fwnode, "try-power-role", &buf);
> + if (ret) {
> + dev_err(dev, "try-power-role not found: %d\n", ret);
> + return ret;
> + }
> +
> + ret = typec_find_power_role(buf);
> + if (ret < 0)
> + return ret;
> + cap->prefer_role = ret;
> +
> + /* Get source pdos */
> + ret = fwnode_property_count_u32(fwnode, "source-pdos");
> + if (ret > 0) {
> + dev_info(dev, "%d source-pdos found\n", ret);
Noise.
Note. If this patch turns out to be OK, you can register the PDOs so
they become visible in sysfs:
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?h=usb-testing&id=5413116ea2e1f963646146b4ae7a4b99c5714427
> + typecp->src_pdo_nr = min(ret, PDO_MAX_OBJECTS);
> + ret = fwnode_property_read_u32_array(fwnode, "source-pdos",
> + typecp->src_pdo,
> + typecp->src_pdo_nr);
> + if (ret < 0) {
> + dev_err(dev, "source cap validate failed: %d\n", ret);
> + return -EINVAL;
> + }
> +
> + typecp->caps_flags |= HAS_SOURCE_CAP;
> + }
> +
> + ret = fwnode_property_count_u32(fwnode, "sink-pdos");
> + if (ret > 0) {
> + dev_info(dev, "%d sink-pdos found\n", ret);
Noise.
> + typecp->sink_pdo_nr = min(ret, PDO_MAX_OBJECTS);
> + ret = fwnode_property_read_u32_array(fwnode, "sink-pdos",
> + typecp->sink_pdo,
> + typecp->sink_pdo_nr);
> + if (ret < 0) {
> + dev_err(dev, "sink cap validate failed: %d\n", ret);
> + return -EINVAL;
> + }
> +
> + for (i = 0; i < typecp->sink_pdo_nr; i++) {
> + ret = 0;
> + switch (pdo_type(typecp->sink_pdo[i])) {
> + case PDO_TYPE_FIXED:
> + ret = pdo_fixed_voltage(typecp->sink_pdo[i]);
> + break;
> + case PDO_TYPE_BATT:
> + case PDO_TYPE_VAR:
> + ret = pdo_max_voltage(typecp->sink_pdo[i]);
> + break;
> + case PDO_TYPE_APDO:
> + default:
> + ret = 0;
> + break;
> + }
> +
> + /* 100mv per unit */
> + typecp->sink_voltage = max(5000, ret) / 100;
> + }
> +
> + typecp->caps_flags |= HAS_SINK_CAP;
> + }
> +
> + if (!fwnode_property_read_u32(fwnode, "op-sink-microwatt", &ret)) {
> + dev_info(dev, "%d sink-microwat found\n", ret);
That looks also useful only for debugging.
> + typecp->sink_watt = ret / 500000; /* 500mw per unit */
> + typecp->caps_flags |= HAS_SINK_WATT;
> + }
> +
> + cap->fwnode = fwnode;
> +
> + ctx->typec.role_sw = usb_role_switch_get(dev);
> + if (IS_ERR(ctx->typec.role_sw)) {
> + dev_err(dev, "USB role switch not found.\n");
> + ctx->typec.role_sw = NULL;
> + }
> +
> + ctx->typec.port = typec_register_port(dev, cap);
> + if (IS_ERR(ctx->typec.port)) {
> + ret = PTR_ERR(ctx->typec.port);
> + ctx->typec.port = NULL;
> + dev_err(dev, "Failed to register type c port %d\n", ret);
> + return ret;
> + }
> +
> + typec_port_register_altmodes(ctx->typec.port, NULL, ctx,
> + ctx->typec.port_amode,
> + MAX_ALTMODE);
> +
> + return 0;
> +}
> +
> +static int anx7411_typec_check_connection(struct anx7411_data *ctx)
> +{
> + int ret;
> +
> + ret = anx7411_reg_read(ctx->spi_client, FW_VER);
> + if (ret < 0)
> + return 0; /* No device attached in typec port */
> +
> + /* Clear interrupt and alert status */
> + anx7411_reg_write(ctx->spi_client, INT_STS, 0);
> + anx7411_reg_write(ctx->tcpc_client, ALERT_0, 0xFF);
> + anx7411_reg_write(ctx->tcpc_client, ALERT_1, 0xFF);
> +
> + anx7411_cc_status_detect(ctx);
> + anx7411_power_role_detect(ctx);
> + anx7411_data_role_detect(ctx);
> + anx7411_set_mux(ctx, SELECT_PIN_ASSIGMENT_C);
> +
> + anx7411_send_msg(ctx, TYPE_GET_DP_ALT_ENTER, NULL, 0);
> + anx7411_send_msg(ctx, TYPE_GET_DP_DISCOVER_MODES_INFO, NULL, 0);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused anx7411_runtime_pm_suspend(struct device *dev)
> +{
> + struct anx7411_data *ctx = dev_get_drvdata(dev);
> +
> + mutex_lock(&ctx->lock);
> +
> + anx7411_partner_unregister_altmode(ctx);
> +
> + if (ctx->typec.partner)
> + anx7411_unregister_partner(ctx);
> +
> + mutex_unlock(&ctx->lock);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused anx7411_runtime_pm_resume(struct device *dev)
> +{
> + struct anx7411_data *ctx = dev_get_drvdata(dev);
> +
> + mutex_lock(&ctx->lock);
> + /* Detect PD connection */
> + anx7411_typec_check_connection(ctx);
> +
> + mutex_unlock(&ctx->lock);
> +
> + return 0;
> +}
> +
> +static const struct dev_pm_ops anx7411_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> + pm_runtime_force_resume)
> + SET_RUNTIME_PM_OPS(anx7411_runtime_pm_suspend,
> + anx7411_runtime_pm_resume, NULL)
> +};
> +
> +static void anx7411_get_gpio_irq(struct anx7411_data *ctx)
> +{
> + struct device *dev = &ctx->tcpc_client->dev;
> +
> + ctx->intp_gpiod = devm_gpiod_get_optional(dev, "interrupt", GPIOD_IN);
> + if (!ctx->intp_gpiod) {
> + dev_err(dev, "no interrupt gpio property\n");
> + return;
> + }
> +
> + ctx->intp_irq = gpiod_to_irq(ctx->intp_gpiod);
> + dev_info(dev, "request gpio(%d) irq(%d)\n",
> + desc_to_gpio(ctx->intp_gpiod), ctx->intp_irq);
Noise.
> + if (!ctx->intp_irq)
> + dev_err(dev, "failed to get GPIO IRQ\n");
> +}
> +
> +static const char *anx7411_psy_name_prefix = "anx7411-source-psy-";
Drop that.
> +static enum power_supply_usb_type anx7411_psy_usb_types[] = {
> + POWER_SUPPLY_USB_TYPE_C,
> + POWER_SUPPLY_USB_TYPE_PD,
> + POWER_SUPPLY_USB_TYPE_PD_PPS,
> +};
> +
> +static enum power_supply_property anx7411_psy_props[] = {
> + POWER_SUPPLY_PROP_USB_TYPE,
> + POWER_SUPPLY_PROP_ONLINE,
> + POWER_SUPPLY_PROP_VOLTAGE_MIN,
> + POWER_SUPPLY_PROP_VOLTAGE_MAX,
> + POWER_SUPPLY_PROP_VOLTAGE_NOW,
> + POWER_SUPPLY_PROP_CURRENT_MAX,
> + POWER_SUPPLY_PROP_CURRENT_NOW,
> +};
> +
> +static int anx7411_psy_set_prop(struct power_supply *psy,
> + enum power_supply_property psp,
> + const union power_supply_propval *val)
> +{
> + struct anx7411_data *ctx = power_supply_get_drvdata(psy);
> + int ret = 0;
> +
> + if (psp == POWER_SUPPLY_PROP_ONLINE)
> + ctx->psy_online = val->intval;
> + else
> + ret = -EINVAL;
> +
> + power_supply_changed(ctx->psy);
> + return ret;
> +}
> +
> +static int anx7411_psy_prop_writeable(struct power_supply *psy,
> + enum power_supply_property psp)
> +{
> + return psp == POWER_SUPPLY_PROP_ONLINE;
> +}
> +
> +static int anx7411_psy_get_prop(struct power_supply *psy,
> + enum power_supply_property psp,
> + union power_supply_propval *val)
> +{
> + struct anx7411_data *ctx = power_supply_get_drvdata(psy);
> + int ret = 0;
> +
> + switch (psp) {
> + case POWER_SUPPLY_PROP_USB_TYPE:
> + val->intval = ctx->usb_type;
> + break;
> + case POWER_SUPPLY_PROP_ONLINE:
> + val->intval = ctx->psy_online;
> + break;
> + case POWER_SUPPLY_PROP_VOLTAGE_NOW:
> + case POWER_SUPPLY_PROP_VOLTAGE_MIN:
> + case POWER_SUPPLY_PROP_VOLTAGE_MAX:
> + val->intval = (ctx->psy_online) ?
> + ctx->typec.request_voltage * 1000 : 0;
> + break;
> + case POWER_SUPPLY_PROP_CURRENT_NOW:
> + case POWER_SUPPLY_PROP_CURRENT_MAX:
> + val->intval = (ctx->psy_online) ?
> + ctx->typec.request_current * 1000 : 0;
> + break;
> + default:
> + ret = -EINVAL;
> + break;
> + }
> + return ret;
> +}
> +
> +static int anx7411_psy_register(struct anx7411_data *ctx)
> +{
> + struct power_supply_config psy_cfg = {};
> + const char *port_dev_name = dev_name(ctx->dev);
> + size_t psy_name_len = strlen(anx7411_psy_name_prefix) +
> + strlen(port_dev_name) + 1;
> + char *psy_name;
> + struct power_supply_desc *psy_desc = &ctx->psy_desc;
> +
> + psy_cfg.drv_data = ctx;
> + psy_cfg.fwnode = dev_fwnode(ctx->dev);
> + psy_name = devm_kzalloc(ctx->dev, psy_name_len, GFP_KERNEL);
> + if (!psy_name) {
> + dev_warn(ctx->dev, "unable to alloc psy memory\n");
> + return -ENOMEM;
> + }
> +
> + snprintf(psy_name, psy_name_len, "%s%s", anx7411_psy_name_prefix,
> + port_dev_name);
static int anx7411_psy_register(struct anx7411_data *ctx)
{
struct power_supply_desc *psy_desc = &ctx->psy_desc;
struct power_supply_config psy_cfg = {};
char *psy_name;
psy_name = devm_kasprintf(ctx->dev, "anx7411-source-psy-%s", dev_name(ctx->dev));
if (!psy_name)
return -ENOMEM;
> + psy_desc->name = psy_name;
> + psy_desc->type = POWER_SUPPLY_TYPE_USB;
> + psy_desc->usb_types = anx7411_psy_usb_types;
> + psy_desc->num_usb_types = ARRAY_SIZE(anx7411_psy_usb_types);
> + psy_desc->properties = anx7411_psy_props,
> + psy_desc->num_properties = ARRAY_SIZE(anx7411_psy_props),
> +
> + psy_desc->get_property = anx7411_psy_get_prop,
> + psy_desc->set_property = anx7411_psy_set_prop,
> + psy_desc->property_is_writeable = anx7411_psy_prop_writeable,
> +
> + ctx->usb_type = POWER_SUPPLY_USB_TYPE_C;
> + ctx->psy = devm_power_supply_register(ctx->dev, psy_desc, &psy_cfg);
> +
> + if (IS_ERR(ctx->psy))
> + dev_warn(ctx->dev, "unable to register psy\n");
> +
> + return PTR_ERR_OR_ZERO(ctx->psy);
> +}
> +
> +static int anx7411_i2c_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + struct anx7411_data *plat;
> + struct device *dev = &client->dev;
> + int ret;
> +
> + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
> + return -ENODEV;
> +
> + plat = devm_kzalloc(dev, sizeof(*plat), GFP_KERNEL);
> + if (!plat)
> + return -ENOMEM;
> +
> + plat->tcpc_client = client;
> + i2c_set_clientdata(client, plat);
> +
> + mutex_init(&plat->lock);
> +
> + ret = anx7411_register_i2c_dummy_clients(plat, client);
> + if (ret) {
> + dev_err(dev, "fail to reserve I2C bus\n");
> + return ret;
> + }
> +
> + ret = anx7411_typec_switch_probe(plat, dev);
> + if (ret) {
> + dev_err(dev, "fail to probe typec switch\n");
> + goto free_i2c_dummy;
> + }
> +
> + ret = anx7411_typec_port_probe(plat, dev);
> + if (ret) {
> + dev_err(dev, "fail to probe typec property.\n");
> + ret = -ENODEV;
> + goto free_typec_switch;
> + }
> +
> + plat->intp_irq = client->irq;
> + if (!client->irq) {
> + dev_warn(dev, "no default interrupt IRQ, probe GPIO interrupt");
Why is that a problem? Why the warning?
> + anx7411_get_gpio_irq(plat);
> + }
> +
> + if (!plat->intp_irq) {
> + dev_err(dev, "fail to get interrupt IRQ\n");
> + goto free_typec_port;
> + }
> +
> + plat->dev = dev;
> + plat->psy_online = ANX7411_PSY_OFFLINE;
> + anx7411_psy_register(plat);
> +
> + if (plat->intp_irq) {
You already checked that above - this condition will be always true.
> + INIT_WORK(&plat->work, anx7411_work_func);
> + plat->workqueue = alloc_workqueue("anx7411_work",
> + WQ_FREEZABLE |
> + WQ_MEM_RECLAIM,
> + 1);
> + if (!plat->workqueue) {
> + dev_err(dev, "fail to create work queue\n");
> + ret = -ENOMEM;
> + goto free_typec_port;
> + }
> +
> + ret = devm_request_threaded_irq(dev, plat->intp_irq,
> + NULL, anx7411_intr_isr,
> + IRQF_TRIGGER_FALLING |
> + IRQF_ONESHOT,
> + "anx7411-intp", plat);
> + if (ret) {
> + dev_err(dev, "fail to request irq\n");
> + goto free_wq;
> + }
> + }
> +
> + anx7411_typec_check_connection(plat);
> +
> + pm_runtime_enable(dev);
> +
> + return 0;
> +
> +free_wq:
> + destroy_workqueue(plat->workqueue);
> +
> +free_typec_port:
> + typec_unregister_port(plat->typec.port);
> + anx7411_port_unregister_altmodes(plat->typec.port_amode);
> +
> +free_typec_switch:
> + anx7411_unregister_switch(plat);
> + anx7411_unregister_mux(plat);
> +
> +free_i2c_dummy:
> + i2c_unregister_device(plat->spi_client);
> +
> + return ret;
> +}
> +
> +static int anx7411_i2c_remove(struct i2c_client *client)
> +{
> + struct anx7411_data *plat = i2c_get_clientdata(client);
> +
> + anx7411_partner_unregister_altmode(plat);
> + anx7411_unregister_partner(plat);
> +
> + if (plat->workqueue)
> + destroy_workqueue(plat->workqueue);
> +
> + if (plat->spi_client)
> + i2c_unregister_device(plat->spi_client);
> +
> + if (plat->typec.role_sw)
> + usb_role_switch_put(plat->typec.role_sw);
> +
> + anx7411_unregister_mux(plat);
> +
> + anx7411_unregister_switch(plat);
> +
> + if (plat->typec.port)
> + typec_unregister_port(plat->typec.port);
> +
> + anx7411_port_unregister_altmodes(plat->typec.port_amode);
> +
> + return 0;
> +}
> +
> +static const struct i2c_device_id anx7411_id[] = {
> + {"anx7411", 0},
> + {}
> +};
> +
> +MODULE_DEVICE_TABLE(i2c, anx7411_id);
> +
> +static const struct of_device_id anx_match_table[] = {
> + {.compatible = "analogix,anx7411",},
> + {},
> +};
> +
> +static struct i2c_driver anx7411_driver = {
> + .driver = {
> + .name = "anx7411",
> + .of_match_table = anx_match_table,
> + .pm = &anx7411_pm_ops,
> + },
> + .probe = anx7411_i2c_probe,
> + .remove = anx7411_i2c_remove,
> +
> + .id_table = anx7411_id,
> +};
> +
> +module_i2c_driver(anx7411_driver);
> +
> +MODULE_DESCRIPTION("Anx7411 USB Type-C PD driver");
> +MODULE_AUTHOR("Xin Ji <xji@...logixsemi.com>");
> +MODULE_LICENSE("GPL v2");
> +MODULE_VERSION("0.1.5");
thanks,
--
heikki
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