// SPDX-License-Identifier: GPL-2.0
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/*
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* Maxim Quad GMSL2/GMSL1 to CSI-2 Deserializer driver
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*
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* Copyright (C) 2023 Rockchip Electronics Co., Ltd.
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*
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* Author: Cai Wenzhong <cwz@rock-chips.com>
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*
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* V2.00.00 maxim serdes quad GMSL2/GMSL1 driver framework.
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* 1. local deserializer support: max96712/max96722
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* 2. remote serializer support: max9295/max96715/max96717
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* 3. support deserializer and serializer auto adaptive
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* 4. support deserializer output test pattern
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* 5. support remote serializer I2c address mapping
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* 6. support remote serializer hot plug detection and recovery
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*
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* V2.01.00
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* 1. remote device and local link are bound through link id
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* 2. support local and remote port chain check
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* 3. drivers/media/i2c/maxim4c/Kconfig support menu select
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* 4. optimize delay time and error messages
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* 5. power control: local by pwdn gpio, remote by pocen gpio
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* 6. local pwdn on/off enable depend on MAXIM4C_LOCAL_DES_ON_OFF_EN
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*
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*/
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#include <linux/clk.h>
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#include <linux/i2c.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/sysfs.h>
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#include <linux/slab.h>
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#include <linux/version.h>
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#include <linux/compat.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of_graph.h>
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#include <linux/pm_runtime.h>
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#include <linux/workqueue.h>
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#include <linux/rk-camera-module.h>
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#include <linux/gpio/consumer.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/regulator/consumer.h>
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#include <media/media-entity.h>
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#include <media/v4l2-async.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-subdev.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-subdev.h>
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#include "maxim4c_api.h"
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#define DRIVER_VERSION KERNEL_VERSION(2, 0x01, 0x00)
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#define MAXIM4C_XVCLK_FREQ 25000000
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static int maxim4c_check_local_chipid(maxim4c_t *maxim4c)
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{
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struct i2c_client *client = maxim4c->client;
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struct device *dev = &client->dev;
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int ret = 0, loop = 0;
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u8 chipid = 0;
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for (loop = 0; loop < 5; loop++) {
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if (loop != 0) {
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dev_info(dev, "check local chipid retry (%d)", loop);
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msleep(10);
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}
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ret = maxim4c_i2c_read_byte(client,
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MAXIM4C_REG_CHIP_ID, MAXIM4C_I2C_REG_ADDR_16BITS,
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&chipid);
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if (ret == 0) {
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if (chipid == maxim4c->chipid) {
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if (chipid == MAX96712_CHIP_ID) {
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dev_info(dev, "MAX96712 is Detected\n");
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return 0;
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}
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if (chipid == MAX96722_CHIP_ID) {
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dev_info(dev, "MAX96722 is Detected\n");
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return 0;
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}
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} else {
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dev_err(dev, "Unexpected maxim chipid = %02x\n", chipid);
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return -ENODEV;
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}
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}
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}
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dev_err(dev, "maxim check chipid error, ret(%d)\n", ret);
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return -ENODEV;
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}
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static irqreturn_t maxim4c_hot_plug_detect_irq_handler(int irq, void *dev_id)
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{
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struct maxim4c *maxim4c = dev_id;
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struct device *dev = &maxim4c->client->dev;
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int lock_gpio_level = 0;
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mutex_lock(&maxim4c->mutex);
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if (maxim4c->streaming) {
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lock_gpio_level = gpiod_get_value_cansleep(maxim4c->lock_gpio);
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if (lock_gpio_level == 0) {
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dev_info(dev, "serializer hot plug out\n");
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maxim4c->hot_plug_state = MAXIM4C_HOT_PLUG_OUT;
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} else {
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dev_info(dev, "serializer hot plug in\n");
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maxim4c->hot_plug_state = MAXIM4C_HOT_PLUG_IN;
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}
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queue_delayed_work(maxim4c->hot_plug_work.state_check_wq,
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&maxim4c->hot_plug_work.state_d_work,
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msecs_to_jiffies(50));
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}
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mutex_unlock(&maxim4c->mutex);
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return IRQ_HANDLED;
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}
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static void maxim4c_lock_irq_init(maxim4c_t *maxim4c)
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{
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struct device *dev = &maxim4c->client->dev;
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int ret = 0;
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if (!IS_ERR(maxim4c->lock_gpio)) {
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maxim4c->hot_plug_irq = gpiod_to_irq(maxim4c->lock_gpio);
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if (maxim4c->hot_plug_irq < 0) {
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dev_err(dev, "failed to get hot plug irq\n");
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} else {
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ret = devm_request_threaded_irq(dev,
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maxim4c->hot_plug_irq,
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NULL,
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maxim4c_hot_plug_detect_irq_handler,
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IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT,
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"maxim4c_hot_plug",
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maxim4c);
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if (ret) {
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dev_err(dev, "failed to request hot plug irq (%d)\n", ret);
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maxim4c->hot_plug_irq = -1;
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} else {
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disable_irq(maxim4c->hot_plug_irq);
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}
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}
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}
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}
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static void maxim4c_hot_plug_state_check_work(struct work_struct *work)
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{
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struct maxim4c_hot_plug_work *hot_plug_work =
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container_of(work, struct maxim4c_hot_plug_work, state_d_work.work);
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struct maxim4c *maxim4c =
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container_of(hot_plug_work, struct maxim4c, hot_plug_work);
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struct device *dev = &maxim4c->client->dev;
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u8 curr_lock_state = 0, last_lock_state = 0, link_lock_change = 0;
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u8 link_enable_mask = 0, link_id = 0;
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dev_dbg(dev, "%s\n", __func__);
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mutex_lock(&maxim4c->mutex);
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if (maxim4c->streaming == 0) {
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mutex_unlock(&maxim4c->mutex);
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return;
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}
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link_enable_mask = maxim4c->gmsl_link.link_enable_mask;
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last_lock_state = maxim4c->link_lock_state;
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if ((maxim4c->hot_plug_state == MAXIM4C_HOT_PLUG_OUT)
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&& (last_lock_state == link_enable_mask)) {
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maxim4c_link_select_remote_control(maxim4c, 0);
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}
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curr_lock_state = maxim4c_link_get_lock_state(maxim4c, link_enable_mask);
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link_lock_change = (last_lock_state ^ curr_lock_state);
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if (link_lock_change) {
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dev_dbg(dev, "lock state: current = 0x%02x, last = 0x%02x\n",
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curr_lock_state, last_lock_state);
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maxim4c->link_lock_state = curr_lock_state;
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}
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if (link_lock_change & MAXIM4C_LINK_MASK_A) {
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link_id = MAXIM4C_LINK_ID_A;
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if (curr_lock_state & MAXIM4C_LINK_MASK_A) {
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dev_info(dev, "Link A plug in\n");
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maxim4c_remote_devices_init(maxim4c, MAXIM4C_LINK_MASK_A);
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maxim4c_video_pipe_linkid_enable(maxim4c, link_id, true);
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} else {
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dev_info(dev, "Link A plug out\n");
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maxim4c_video_pipe_linkid_enable(maxim4c, link_id, false);
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}
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}
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if (link_lock_change & MAXIM4C_LINK_MASK_B) {
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link_id = MAXIM4C_LINK_ID_B;
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if (curr_lock_state & MAXIM4C_LINK_MASK_B) {
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dev_info(dev, "Link B plug in\n");
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maxim4c_remote_devices_init(maxim4c, MAXIM4C_LINK_MASK_B);
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maxim4c_video_pipe_linkid_enable(maxim4c, link_id, true);
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} else {
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dev_info(dev, "Link B plug out\n");
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maxim4c_video_pipe_linkid_enable(maxim4c, link_id, false);
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}
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}
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if (link_lock_change & MAXIM4C_LINK_MASK_C) {
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link_id = MAXIM4C_LINK_ID_C;
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if (curr_lock_state & MAXIM4C_LINK_MASK_C) {
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dev_info(dev, "Link C plug in\n");
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maxim4c_remote_devices_init(maxim4c, MAXIM4C_LINK_MASK_C);
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maxim4c_video_pipe_linkid_enable(maxim4c, link_id, true);
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} else {
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dev_info(dev, "Link C plug out\n");
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maxim4c_video_pipe_linkid_enable(maxim4c, link_id, false);
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}
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}
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if (link_lock_change & MAXIM4C_LINK_MASK_D) {
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link_id = MAXIM4C_LINK_ID_D;
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if (curr_lock_state & MAXIM4C_LINK_MASK_D) {
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dev_info(dev, "Link D plug in\n");
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maxim4c_remote_devices_init(maxim4c, MAXIM4C_LINK_MASK_D);
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maxim4c_video_pipe_linkid_enable(maxim4c, link_id, true);
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} else {
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dev_info(dev, "Link D plug out\n");
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maxim4c_video_pipe_linkid_enable(maxim4c, link_id, false);
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}
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}
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if (curr_lock_state == link_enable_mask) {
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// remote control mask enable
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maxim4c_link_select_remote_control(maxim4c, link_enable_mask);
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} else {
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queue_delayed_work(maxim4c->hot_plug_work.state_check_wq,
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&maxim4c->hot_plug_work.state_d_work,
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msecs_to_jiffies(100));
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}
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mutex_unlock(&maxim4c->mutex);
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}
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static int maxim4c_lock_state_work_init(maxim4c_t *maxim4c)
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{
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struct device *dev = &maxim4c->client->dev;
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INIT_DELAYED_WORK(&maxim4c->hot_plug_work.state_d_work,
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maxim4c_hot_plug_state_check_work);
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maxim4c->hot_plug_work.state_check_wq =
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create_singlethread_workqueue("maxim4c work queue");
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if (maxim4c->hot_plug_work.state_check_wq == NULL) {
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dev_err(dev, "failed to create hot plug work queue\n");
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return -ENOMEM;
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}
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return 0;
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}
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static int maxim4c_lock_state_work_deinit(maxim4c_t *maxim4c)
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{
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if (maxim4c->hot_plug_work.state_check_wq) {
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cancel_delayed_work_sync(&maxim4c->hot_plug_work.state_d_work);
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destroy_workqueue(maxim4c->hot_plug_work.state_check_wq);
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maxim4c->hot_plug_work.state_check_wq = NULL;
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}
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return 0;
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}
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/* Calculate the delay in us by clock rate and clock cycles */
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static inline u32 maxim4c_cal_delay(u32 cycles)
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{
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return DIV_ROUND_UP(cycles, MAXIM4C_XVCLK_FREQ / 1000 / 1000);
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}
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static int maxim4c_local_device_power_on(maxim4c_t *maxim4c)
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{
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struct device *dev = &maxim4c->client->dev;
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if (!IS_ERR(maxim4c->pwdn_gpio)) {
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dev_info(dev, "local device pwdn gpio on\n");
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gpiod_set_value_cansleep(maxim4c->pwdn_gpio, 1);
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usleep_range(5000, 10000);
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}
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return 0;
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}
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static void maxim4c_local_device_power_off(maxim4c_t *maxim4c)
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{
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struct device *dev = &maxim4c->client->dev;
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if (!IS_ERR(maxim4c->pwdn_gpio)) {
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dev_info(dev, "local device pwdn gpio off\n");
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gpiod_set_value_cansleep(maxim4c->pwdn_gpio, 0);
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}
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}
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static int maxim4c_remote_device_power_on(maxim4c_t *maxim4c)
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{
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struct device *dev = &maxim4c->client->dev;
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// remote PoC enable
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if (!IS_ERR(maxim4c->pocen_gpio)) {
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dev_info(dev, "remote device pocen gpio on\n");
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gpiod_set_value_cansleep(maxim4c->pocen_gpio, 1);
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usleep_range(5000, 10000);
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}
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return 0;
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}
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static int maxim4c_remote_device_power_off(maxim4c_t *maxim4c)
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{
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struct device *dev = &maxim4c->client->dev;
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// remote PoC enable
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if (!IS_ERR(maxim4c->pocen_gpio)) {
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dev_info(dev, "remote device pocen gpio off\n");
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gpiod_set_value_cansleep(maxim4c->pocen_gpio, 0);
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}
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return 0;
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}
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static int maxim4c_runtime_resume(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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struct maxim4c *maxim4c = v4l2_get_subdevdata(sd);
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int ret = 0;
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#if MAXIM4C_LOCAL_DES_ON_OFF_EN
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ret |= maxim4c_local_device_power_on(maxim4c);
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#endif /* MAXIM4C_LOCAL_DES_ON_OFF_EN */
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ret |= maxim4c_remote_device_power_on(maxim4c);
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return ret;
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}
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static int maxim4c_runtime_suspend(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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struct maxim4c *maxim4c = v4l2_get_subdevdata(sd);
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int ret = 0;
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ret |= maxim4c_remote_device_power_off(maxim4c);
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#if MAXIM4C_LOCAL_DES_ON_OFF_EN
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maxim4c_local_device_power_off(maxim4c);
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#endif /* MAXIM4C_LOCAL_DES_ON_OFF_EN */
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return ret;
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}
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static const struct dev_pm_ops maxim4c_pm_ops = {
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SET_RUNTIME_PM_OPS(
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maxim4c_runtime_suspend, maxim4c_runtime_resume, NULL)
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};
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static void maxim4c_module_data_init(maxim4c_t *maxim4c)
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{
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maxim4c_link_data_init(maxim4c);
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maxim4c_video_pipe_data_init(maxim4c);
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maxim4c_mipi_txphy_data_init(maxim4c);
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}
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static int maxim4c_extra_init_seq_parse(maxim4c_t *maxim4c, struct device_node *node)
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{
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struct device *dev = &maxim4c->client->dev;
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struct device_node *init_seq_node = NULL;
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struct maxim4c_i2c_init_seq *init_seq = NULL;
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init_seq_node = of_get_child_by_name(node, "extra-init-sequence");
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if (IS_ERR_OR_NULL(init_seq_node)) {
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dev_dbg(dev, "%pOF no child node extra-init-sequence\n", node);
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return 0;
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}
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if (!of_device_is_available(init_seq_node)) {
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dev_dbg(dev, "%pOF is disabled\n", init_seq_node);
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of_node_put(init_seq_node);
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return 0;
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}
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dev_info(dev, "load extra-init-sequence\n");
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init_seq = &maxim4c->extra_init_seq;
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maxim4c_i2c_load_init_seq(dev,
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init_seq_node, init_seq);
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of_node_put(init_seq_node);
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return 0;
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}
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static int maxim4c_module_parse_dt(maxim4c_t *maxim4c)
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{
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struct device *dev = &maxim4c->client->dev;
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struct device_node *node = NULL;
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// maxim serdes local
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node = of_get_child_by_name(dev->of_node, "serdes-local-device");
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if (IS_ERR_OR_NULL(node)) {
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dev_err(dev, "%pOF has no child node: serdes-local-device\n",
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dev->of_node);
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return -ENODEV;
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}
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if (!of_device_is_available(node)) {
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dev_info(dev, "%pOF is disabled\n", node);
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of_node_put(node);
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return -ENODEV;
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}
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/* gmsl link parse dt */
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maxim4c_link_parse_dt(maxim4c, node);
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/* video pipe parse dt */
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maxim4c_video_pipe_parse_dt(maxim4c, node);
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/* mipi txphy parse dt */
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maxim4c_mipi_txphy_parse_dt(maxim4c, node);
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/* extra init seq parse dt */
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maxim4c_extra_init_seq_parse(maxim4c, node);
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of_node_put(node);
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return 0;
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}
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static int maxim4c_run_extra_init_seq(maxim4c_t *maxim4c)
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{
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struct i2c_client *client = maxim4c->client;
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struct device *dev = &client->dev;
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int ret = 0;
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ret = maxim4c_i2c_run_init_seq(client,
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&maxim4c->extra_init_seq);
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if (ret) {
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dev_err(dev, "extra init sequence error\n");
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return ret;
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}
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return 0;
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}
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static int maxim4c_module_hw_previnit(maxim4c_t *maxim4c)
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{
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struct i2c_client *client = maxim4c->client;
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int ret = 0;
|
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// All links disable at beginning.
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ret = maxim4c_i2c_write_byte(client,
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0x0006, MAXIM4C_I2C_REG_ADDR_16BITS,
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0xF0);
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if (ret)
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return ret;
|
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// MIPI CSI output disable.
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ret = maxim4c_i2c_write_byte(client,
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0x040B, MAXIM4C_I2C_REG_ADDR_16BITS,
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0x00);
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if (ret)
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return ret;
|
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// MIPI TXPHY standby
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ret = maxim4c_i2c_update_byte(client,
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0x08A2, MAXIM4C_I2C_REG_ADDR_16BITS,
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0xF0, 0x00);
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if (ret)
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return ret;
|
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return 0;
|
}
|
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static int maxim4c_module_hw_postinit(maxim4c_t *maxim4c)
|
{
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struct i2c_client *client = maxim4c->client;
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int ret = 0;
|
|
// video pipe disable all
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ret |= maxim4c_i2c_write_byte(client,
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0x00F4, MAXIM4C_I2C_REG_ADDR_16BITS,
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0);
|
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// remote control disable all
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ret |= maxim4c_link_select_remote_control(maxim4c, 0);
|
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return ret;
|
}
|
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int maxim4c_module_hw_init(maxim4c_t *maxim4c)
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{
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struct device *dev = &maxim4c->client->dev;
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int ret = 0;
|
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ret = maxim4c_module_hw_previnit(maxim4c);
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if (ret) {
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dev_err(dev, "%s: hw prev init error\n", __func__);
|
|
return ret;
|
}
|
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ret = maxim4c_link_hw_init(maxim4c);
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if (ret) {
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dev_err(dev, "%s: hw link init error\n", __func__);
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return ret;
|
}
|
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ret = maxim4c_video_pipe_hw_init(maxim4c);
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if (ret) {
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dev_err(dev, "%s: hw pipe init error\n", __func__);
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return ret;
|
}
|
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ret = maxim4c_mipi_txphy_hw_init(maxim4c);
|
if (ret) {
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dev_err(dev, "%s: hw txphy init error\n", __func__);
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return ret;
|
}
|
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ret = maxim4c_run_extra_init_seq(maxim4c);
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if (ret) {
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dev_err(dev, "%s: run extra init seq error\n", __func__);
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return ret;
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}
|
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ret = maxim4c_module_hw_postinit(maxim4c);
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if (ret) {
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dev_err(dev, "%s: hw post init error\n", __func__);
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return ret;
|
}
|
|
return 0;
|
}
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EXPORT_SYMBOL(maxim4c_module_hw_init);
|
|
static int maxim4c_probe(struct i2c_client *client,
|
const struct i2c_device_id *id)
|
{
|
struct device *dev = &client->dev;
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struct device_node *node = dev->of_node;
|
maxim4c_t *maxim4c = NULL;
|
u32 chip_id;
|
int ret = 0;
|
|
dev_info(dev, "driver version: %02x.%02x.%02x", DRIVER_VERSION >> 16,
|
(DRIVER_VERSION & 0xff00) >> 8, DRIVER_VERSION & 0x00ff);
|
|
chip_id = (uintptr_t)of_device_get_match_data(dev);
|
if (chip_id == MAX96712_CHIP_ID) {
|
dev_info(dev, "maxim4c driver for max96712\n");
|
} else if (chip_id == MAX96722_CHIP_ID) {
|
dev_info(dev, "maxim4c driver for max96722\n");
|
} else {
|
dev_err(dev, "maxim4c driver unknown chip\n");
|
return -EINVAL;
|
}
|
|
maxim4c = devm_kzalloc(dev, sizeof(*maxim4c), GFP_KERNEL);
|
if (!maxim4c) {
|
dev_err(dev, "maxim4c probe no memory error\n");
|
return -ENOMEM;
|
}
|
|
maxim4c->client = client;
|
maxim4c->chipid = chip_id;
|
|
ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
|
&maxim4c->module_index);
|
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
|
&maxim4c->module_facing);
|
ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
|
&maxim4c->module_name);
|
ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
|
&maxim4c->len_name);
|
if (ret) {
|
dev_err(dev, "could not get module information!\n");
|
return -EINVAL;
|
}
|
|
maxim4c->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW);
|
if (IS_ERR(maxim4c->pwdn_gpio))
|
dev_warn(dev, "Failed to get pwdn-gpios, maybe no use\n");
|
|
maxim4c->pocen_gpio = devm_gpiod_get(dev, "pocen", GPIOD_OUT_LOW);
|
if (IS_ERR(maxim4c->pocen_gpio))
|
dev_warn(dev, "Failed to get pocen-gpios\n");
|
|
maxim4c->lock_gpio = devm_gpiod_get(dev, "lock", GPIOD_IN);
|
if (IS_ERR(maxim4c->lock_gpio))
|
dev_warn(dev, "Failed to get lock-gpios\n");
|
|
mutex_init(&maxim4c->mutex);
|
|
ret = maxim4c_local_device_power_on(maxim4c);
|
if (ret)
|
goto err_destroy_mutex;
|
|
ret = maxim4c_check_local_chipid(maxim4c);
|
if (ret)
|
goto err_power_off;
|
|
// client->dev->driver_data = subdev
|
// subdev->dev->driver_data = maxim4c
|
ret = maxim4c_v4l2_subdev_init(maxim4c);
|
if (ret) {
|
dev_err(dev, "maxim4c probe v4l2 subdev init error\n");
|
goto err_power_off;
|
}
|
|
#if MAXIM4C_TEST_PATTERN
|
ret = maxim4c_pattern_data_init(maxim4c);
|
if (ret)
|
goto err_power_off;
|
|
#if (MAXIM4C_LOCAL_DES_ON_OFF_EN == 0)
|
ret = maxim4c_pattern_hw_init(maxim4c);
|
if (ret)
|
goto err_power_off;
|
#endif /* MAXIM4C_LOCAL_DES_ON_OFF_EN */
|
|
pm_runtime_set_active(dev);
|
pm_runtime_enable(dev);
|
pm_runtime_idle(dev);
|
|
return 0;
|
#endif /* MAXIM4C_TEST_PATTERN */
|
|
maxim4c_module_data_init(maxim4c);
|
maxim4c_module_parse_dt(maxim4c);
|
|
#if (MAXIM4C_LOCAL_DES_ON_OFF_EN == 0)
|
ret = maxim4c_module_hw_init(maxim4c);
|
if (ret)
|
goto err_subdev_deinit;
|
#endif /* MAXIM4C_LOCAL_DES_ON_OFF_EN */
|
|
ret = maxim4c_remote_mfd_add_devices(maxim4c);
|
if (ret)
|
goto err_subdev_deinit;
|
|
maxim4c_lock_irq_init(maxim4c);
|
maxim4c_lock_state_work_init(maxim4c);
|
|
pm_runtime_set_active(dev);
|
pm_runtime_enable(dev);
|
pm_runtime_idle(dev);
|
|
return 0;
|
|
err_subdev_deinit:
|
maxim4c_v4l2_subdev_deinit(maxim4c);
|
err_power_off:
|
maxim4c_local_device_power_off(maxim4c);
|
err_destroy_mutex:
|
mutex_destroy(&maxim4c->mutex);
|
|
return ret;
|
}
|
|
static int maxim4c_remove(struct i2c_client *client)
|
{
|
maxim4c_t *maxim4c = i2c_get_clientdata(client);
|
|
maxim4c_lock_state_work_deinit(maxim4c);
|
|
maxim4c_v4l2_subdev_deinit(maxim4c);
|
|
mutex_destroy(&maxim4c->mutex);
|
|
pm_runtime_disable(&client->dev);
|
if (!pm_runtime_status_suspended(&client->dev))
|
maxim4c_local_device_power_off(maxim4c);
|
pm_runtime_set_suspended(&client->dev);
|
|
return 0;
|
}
|
|
static const struct of_device_id maxim4c_of_match[] = {
|
{
|
.compatible = "maxim4c,max96712",
|
.data = (const void *)MAX96712_CHIP_ID
|
}, {
|
.compatible = "maxim4c,max96722",
|
.data = (const void *)MAX96722_CHIP_ID
|
},
|
{ /* sentinel */ },
|
};
|
MODULE_DEVICE_TABLE(of, maxim4c_of_match);
|
|
static struct i2c_driver maxim4c_i2c_driver = {
|
.driver = {
|
.name = MAXIM4C_NAME,
|
.pm = &maxim4c_pm_ops,
|
.of_match_table = of_match_ptr(maxim4c_of_match),
|
},
|
.probe = &maxim4c_probe,
|
.remove = &maxim4c_remove,
|
};
|
|
module_i2c_driver(maxim4c_i2c_driver);
|
|
MODULE_AUTHOR("Cai Wenzhong <cwz@rock-chips.com>");
|
MODULE_DESCRIPTION("Maxim quad gmsl deserializer driver");
|
MODULE_LICENSE("GPL");
|
