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openwrt/target/linux/bcm27xx/patches-5.15/950-0885-media-i2c-Add-driver-of-Arducam-Pivariety-series-cam.patch
Álvaro Fernández Rojas 20ea6adbf1 bcm27xx: add support for linux v5.15 
Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2022-05-17 15:11:22 +02:00

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From 94203b7e5bbb814c1d18fc5d95fea18b66041c03 Mon Sep 17 00:00:00 2001
From: Lee Jackson <info@arducam.com>
Date: Thu, 14 Apr 2022 17:31:01 +0800
Subject: [PATCH] media: i2c: Add driver of Arducam Pivariety series
camera
Add a driver for the Arducam Pivariety series CSI2 camera sensor.
Signed-off-by: Lee Jackson <info@arducam.com>
---
drivers/media/i2c/Kconfig | 11 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/arducam-pivariety.c | 1469 +++++++++++++++++++++++++
drivers/media/i2c/arducam-pivariety.h | 107 ++
4 files changed, 1588 insertions(+)
create mode 100644 drivers/media/i2c/arducam-pivariety.c
create mode 100644 drivers/media/i2c/arducam-pivariety.h
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -730,6 +730,17 @@ config VIDEO_APTINA_PLL
config VIDEO_CCS_PLL
tristate
+config VIDEO_ARDUCAM_PIVARIETY
+ tristate "Arducam Pivariety sensor support"
+ depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+ depends on MEDIA_CAMERA_SUPPORT
+ help
+ This is a Video4Linux2 sensor driver for the Arducam
+ Pivariety camera series.
+
+ To compile this driver as a module, choose M here: the
+ module will be called arducam-pivariety.
+
config VIDEO_HI556
tristate "Hynix Hi-556 sensor support"
depends on I2C && VIDEO_V4L2
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_VIDEO_ET8EK8) += et8ek8/
obj-$(CONFIG_VIDEO_CX25840) += cx25840/
obj-$(CONFIG_VIDEO_M5MOLS) += m5mols/
+obj-$(CONFIG_VIDEO_ARDUCAM_PIVARIETY) += arducam-pivariety.o
obj-$(CONFIG_VIDEO_APTINA_PLL) += aptina-pll.o
obj-$(CONFIG_VIDEO_TVAUDIO) += tvaudio.o
obj-$(CONFIG_VIDEO_TDA7432) += tda7432.o
--- /dev/null
+++ b/drivers/media/i2c/arducam-pivariety.c
@@ -0,0 +1,1469 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * A V4L2 driver for Arducam Pivariety Cameras
+ * Copyright (C) 2022 Arducam Technology co., Ltd.
+ *
+ * Based on Sony IMX219 camera driver
+ * Copyright (C) 2019, Raspberry Pi (Trading) Ltd
+ *
+ * I2C read and write method is taken from the OV9281 driver
+ * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+#include "arducam-pivariety.h"
+
+static int debug;
+module_param(debug, int, 0644);
+
+/* regulator supplies */
+static const char * const pivariety_supply_name[] = {
+ /* Supplies can be enabled in any order */
+ "VANA", /* Analog (2.8V) supply */
+ "VDIG", /* Digital Core (1.8V) supply */
+ "VDDL", /* IF (1.2V) supply */
+};
+
+/* The supported raw formats. */
+static const u32 codes[] = {
+ MEDIA_BUS_FMT_SBGGR8_1X8,
+ MEDIA_BUS_FMT_SGBRG8_1X8,
+ MEDIA_BUS_FMT_SGRBG8_1X8,
+ MEDIA_BUS_FMT_SRGGB8_1X8,
+ MEDIA_BUS_FMT_Y8_1X8,
+
+ MEDIA_BUS_FMT_SBGGR10_1X10,
+ MEDIA_BUS_FMT_SGBRG10_1X10,
+ MEDIA_BUS_FMT_SGRBG10_1X10,
+ MEDIA_BUS_FMT_SRGGB10_1X10,
+ MEDIA_BUS_FMT_Y10_1X10,
+
+ MEDIA_BUS_FMT_SBGGR12_1X12,
+ MEDIA_BUS_FMT_SGBRG12_1X12,
+ MEDIA_BUS_FMT_SGRBG12_1X12,
+ MEDIA_BUS_FMT_SRGGB12_1X12,
+ MEDIA_BUS_FMT_Y12_1X12,
+};
+
+#define ARDUCAM_NUM_SUPPLIES ARRAY_SIZE(pivariety_supply_name)
+
+#define ARDUCAM_XCLR_MIN_DELAY_US 10000
+#define ARDUCAM_XCLR_DELAY_RANGE_US 1000
+
+#define MAX_CTRLS 32
+
+struct pivariety {
+ struct v4l2_subdev sd;
+ struct media_pad pad;
+
+ struct v4l2_fwnode_bus_mipi_csi2 bus;
+ struct clk *xclk;
+ u32 xclk_freq;
+
+ struct gpio_desc *reset_gpio;
+ struct regulator_bulk_data supplies[ARDUCAM_NUM_SUPPLIES];
+
+ struct arducam_format *supported_formats;
+ int num_supported_formats;
+ int current_format_idx;
+ int current_resolution_idx;
+ int lanes;
+ int bayer_order_volatile;
+ bool wait_until_free;
+
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct v4l2_ctrl *ctrls[MAX_CTRLS];
+ /* V4L2 Controls */
+ struct v4l2_ctrl *vflip;
+ struct v4l2_ctrl *hflip;
+
+ struct v4l2_rect crop;
+ /*
+ * Mutex for serialized access:
+ * Protect sensor module set pad format and start/stop streaming safely.
+ */
+ struct mutex mutex;
+
+ /* Streaming on/off */
+ bool streaming;
+};
+
+static inline struct pivariety *to_pivariety(struct v4l2_subdev *_sd)
+{
+ return container_of(_sd, struct pivariety, sd);
+}
+
+/* Write registers up to 4 at a time */
+static int pivariety_write_reg(struct i2c_client *client, u16 reg, u32 val)
+{
+ unsigned int len = sizeof(u32);
+ u32 buf_i, val_i = 0;
+ u8 buf[6];
+ u8 *val_p;
+ __be32 val_be;
+
+ buf[0] = reg >> 8;
+ buf[1] = reg & 0xff;
+
+ val_be = cpu_to_be32(val);
+ val_p = (u8 *)&val_be;
+ buf_i = 2;
+
+ while (val_i < 4)
+ buf[buf_i++] = val_p[val_i++];
+
+ if (i2c_master_send(client, buf, len + 2) != len + 2)
+ return -EIO;
+
+ return 0;
+}
+
+/* Read registers up to 4 at a time */
+static int pivariety_read_reg(struct i2c_client *client, u16 reg, u32 *val)
+{
+ struct i2c_msg msgs[2];
+ unsigned int len = sizeof(u32);
+ u8 *data_be_p;
+ __be32 data_be = 0;
+ __be16 reg_addr_be = cpu_to_be16(reg);
+ int ret;
+
+ data_be_p = (u8 *)&data_be;
+ /* Write register address */
+ msgs[0].addr = client->addr;
+ msgs[0].flags = 0;
+ msgs[0].len = 2;
+ msgs[0].buf = (u8 *)&reg_addr_be;
+
+ /* Read data from register */
+ msgs[1].addr = client->addr;
+ msgs[1].flags = I2C_M_RD;
+ msgs[1].len = len;
+ msgs[1].buf = data_be_p;
+
+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+ if (ret != ARRAY_SIZE(msgs))
+ return -EIO;
+
+ *val = be32_to_cpu(data_be);
+
+ return 0;
+}
+
+static int
+pivariety_read(struct pivariety *pivariety, u16 addr, u32 *value)
+{
+ struct v4l2_subdev *sd = &pivariety->sd;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret, count = 0;
+
+ while (count++ < I2C_READ_RETRY_COUNT) {
+ ret = pivariety_read_reg(client, addr, value);
+ if (!ret) {
+ v4l2_dbg(2, debug, sd, "%s: 0x%02x 0x%04x\n",
+ __func__, addr, *value);
+ return ret;
+ }
+ }
+
+ v4l2_err(sd, "%s: Reading register 0x%02x failed\n",
+ __func__, addr);
+
+ return ret;
+}
+
+static int pivariety_write(struct pivariety *pivariety, u16 addr, u32 value)
+{
+ struct v4l2_subdev *sd = &pivariety->sd;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret, count = 0;
+
+ while (count++ < I2C_WRITE_RETRY_COUNT) {
+ ret = pivariety_write_reg(client, addr, value);
+ if (!ret)
+ return ret;
+ }
+
+ v4l2_err(sd, "%s: Write 0x%04x to register 0x%02x failed\n",
+ __func__, value, addr);
+
+ return ret;
+}
+
+static int wait_for_free(struct pivariety *pivariety, int interval)
+{
+ u32 value;
+ u32 count = 0;
+
+ while (count++ < (1000 / interval)) {
+ int ret = pivariety_read(pivariety, SYSTEM_IDLE_REG, &value);
+
+ if (!ret && !value)
+ break;
+ msleep(interval);
+ }
+
+ v4l2_dbg(2, debug, &pivariety->sd, "%s: End wait, Count: %d.\n",
+ __func__, count);
+
+ return 0;
+}
+
+static int is_raw(int pixformat)
+{
+ return pixformat >= 0x28 && pixformat <= 0x2D;
+}
+
+static u32 bayer_to_mbus_code(int data_type, int bayer_order)
+{
+ const u32 depth8[] = {
+ MEDIA_BUS_FMT_SBGGR8_1X8,
+ MEDIA_BUS_FMT_SGBRG8_1X8,
+ MEDIA_BUS_FMT_SGRBG8_1X8,
+ MEDIA_BUS_FMT_SRGGB8_1X8,
+ MEDIA_BUS_FMT_Y8_1X8,
+ };
+
+ const u32 depth10[] = {
+ MEDIA_BUS_FMT_SBGGR10_1X10,
+ MEDIA_BUS_FMT_SGBRG10_1X10,
+ MEDIA_BUS_FMT_SGRBG10_1X10,
+ MEDIA_BUS_FMT_SRGGB10_1X10,
+ MEDIA_BUS_FMT_Y10_1X10,
+ };
+
+ const u32 depth12[] = {
+ MEDIA_BUS_FMT_SBGGR12_1X12,
+ MEDIA_BUS_FMT_SGBRG12_1X12,
+ MEDIA_BUS_FMT_SGRBG12_1X12,
+ MEDIA_BUS_FMT_SRGGB12_1X12,
+ MEDIA_BUS_FMT_Y12_1X12,
+ };
+
+ if (bayer_order < 0 || bayer_order > 4)
+ return 0;
+
+ switch (data_type) {
+ case IMAGE_DT_RAW8:
+ return depth8[bayer_order];
+ case IMAGE_DT_RAW10:
+ return depth10[bayer_order];
+ case IMAGE_DT_RAW12:
+ return depth12[bayer_order];
+ }
+
+ return 0;
+}
+
+static u32 yuv422_to_mbus_code(int data_type, int order)
+{
+ const u32 depth8[] = {
+ MEDIA_BUS_FMT_YUYV8_1X16,
+ MEDIA_BUS_FMT_YVYU8_1X16,
+ MEDIA_BUS_FMT_UYVY8_1X16,
+ MEDIA_BUS_FMT_VYUY8_1X16,
+ };
+
+ const u32 depth10[] = {
+ MEDIA_BUS_FMT_YUYV10_1X20,
+ MEDIA_BUS_FMT_YVYU10_1X20,
+ MEDIA_BUS_FMT_UYVY10_1X20,
+ MEDIA_BUS_FMT_VYUY10_1X20,
+ };
+
+ if (order < 0 || order > 3)
+ return 0;
+
+ switch (data_type) {
+ case IMAGE_DT_YUV422_8:
+ return depth8[order];
+ case IMAGE_DT_YUV422_10:
+ return depth10[order];
+ }
+
+ return 0;
+}
+
+static u32 data_type_to_mbus_code(int data_type, int bayer_order)
+{
+ if (is_raw(data_type))
+ return bayer_to_mbus_code(data_type, bayer_order);
+
+ switch (data_type) {
+ case IMAGE_DT_YUV422_8:
+ case IMAGE_DT_YUV422_10:
+ return yuv422_to_mbus_code(data_type, bayer_order);
+ case IMAGE_DT_RGB565:
+ return MEDIA_BUS_FMT_RGB565_2X8_LE;
+ case IMAGE_DT_RGB888:
+ return MEDIA_BUS_FMT_RGB888_1X24;
+ }
+
+ return 0;
+}
+
+/* Get bayer order based on flip setting. */
+static u32 pivariety_get_format_code(struct pivariety *pivariety,
+ struct arducam_format *format)
+{
+ unsigned int order, origin_order;
+
+ lockdep_assert_held(&pivariety->mutex);
+
+ /*
+ * Only the bayer format needs to transform the format.
+ */
+ if (!is_raw(format->data_type) ||
+ !pivariety->bayer_order_volatile ||
+ format->bayer_order == BAYER_ORDER_GRAY)
+ return data_type_to_mbus_code(format->data_type,
+ format->bayer_order);
+
+ order = format->bayer_order;
+
+ origin_order = order;
+
+ order = (pivariety->hflip && pivariety->hflip->val ? order ^ 1 : order);
+ order = (pivariety->vflip && pivariety->vflip->val ? order ^ 2 : order);
+
+ v4l2_dbg(1, debug, &pivariety->sd, "%s: before: %d, after: %d.\n",
+ __func__, origin_order, order);
+
+ return data_type_to_mbus_code(format->data_type, order);
+}
+
+/* Power/clock management functions */
+static int pivariety_power_on(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct pivariety *pivariety = to_pivariety(sd);
+ int ret;
+
+ ret = regulator_bulk_enable(ARDUCAM_NUM_SUPPLIES,
+ pivariety->supplies);
+ if (ret) {
+ dev_err(dev, "%s: failed to enable regulators\n",
+ __func__);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(pivariety->xclk);
+ if (ret) {
+ dev_err(dev, "%s: failed to enable clock\n",
+ __func__);
+ goto reg_off;
+ }
+
+ gpiod_set_value_cansleep(pivariety->reset_gpio, 1);
+ usleep_range(ARDUCAM_XCLR_MIN_DELAY_US,
+ ARDUCAM_XCLR_MIN_DELAY_US + ARDUCAM_XCLR_DELAY_RANGE_US);
+
+ return 0;
+
+reg_off:
+ regulator_bulk_disable(ARDUCAM_NUM_SUPPLIES, pivariety->supplies);
+
+ return ret;
+}
+
+static int pivariety_power_off(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct pivariety *pivariety = to_pivariety(sd);
+
+ gpiod_set_value_cansleep(pivariety->reset_gpio, 0);
+ regulator_bulk_disable(ARDUCAM_NUM_SUPPLIES, pivariety->supplies);
+ clk_disable_unprepare(pivariety->xclk);
+
+ return 0;
+}
+
+static int pivariety_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct pivariety *pivariety = to_pivariety(sd);
+ struct v4l2_mbus_framefmt *try_fmt =
+ v4l2_subdev_get_try_format(sd, fh->state, 0);
+ struct arducam_format *def_fmt = &pivariety->supported_formats[0];
+
+ /* Initialize try_fmt */
+ try_fmt->width = def_fmt->resolution_set->width;
+ try_fmt->height = def_fmt->resolution_set->height;
+ try_fmt->code = def_fmt->mbus_code;
+ try_fmt->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static int pivariety_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ int ret, i;
+ struct pivariety *pivariety =
+ container_of(ctrl->handler, struct pivariety,
+ ctrl_handler);
+ struct arducam_format *supported_fmts = pivariety->supported_formats;
+ int num_supported_formats = pivariety->num_supported_formats;
+
+ v4l2_dbg(3, debug, &pivariety->sd, "%s: cid = (0x%X), value = (%d).\n",
+ __func__, ctrl->id, ctrl->val);
+
+ ret = pivariety_write(pivariety, CTRL_ID_REG, ctrl->id);
+ ret += pivariety_write(pivariety, CTRL_VALUE_REG, ctrl->val);
+ if (ret < 0)
+ return -EINVAL;
+
+ /* When flip is set, modify all bayer formats */
+ if (ctrl->id == V4L2_CID_VFLIP || ctrl->id == V4L2_CID_HFLIP) {
+ for (i = 0; i < num_supported_formats; i++) {
+ supported_fmts[i].mbus_code =
+ pivariety_get_format_code(pivariety,
+ &supported_fmts[i]);
+ }
+ }
+
+ /*
+ * When starting streaming, controls are set in batches,
+ * and the short interval will cause some controls to be unsuccessfully
+ * set.
+ */
+ if (pivariety->wait_until_free)
+ wait_for_free(pivariety, 1);
+ else
+ usleep_range(200, 210);
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops pivariety_ctrl_ops = {
+ .s_ctrl = pivariety_s_ctrl,
+};
+
+static int pivariety_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct pivariety *pivariety = to_pivariety(sd);
+ struct arducam_format *supported_formats = pivariety->supported_formats;
+ int num_supported_formats = pivariety->num_supported_formats;
+
+ v4l2_dbg(1, debug, sd, "%s: index = (%d)\n", __func__, code->index);
+
+ if (code->index >= num_supported_formats)
+ return -EINVAL;
+
+ code->code = supported_formats[code->index].mbus_code;
+
+ return 0;
+}
+
+static int pivariety_enum_framesizes(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ int i;
+ struct pivariety *pivariety = to_pivariety(sd);
+ struct arducam_format *supported_formats = pivariety->supported_formats;
+ int num_supported_formats = pivariety->num_supported_formats;
+ struct arducam_format *format;
+ struct arducam_resolution *resolution;
+
+ v4l2_dbg(1, debug, sd, "%s: code = (0x%X), index = (%d)\n",
+ __func__, fse->code, fse->index);
+
+ for (i = 0; i < num_supported_formats; i++) {
+ format = &supported_formats[i];
+ if (fse->code == format->mbus_code) {
+ if (fse->index >= format->num_resolution_set)
+ return -EINVAL;
+
+ resolution = &format->resolution_set[fse->index];
+ fse->min_width = resolution->width;
+ fse->max_width = resolution->width;
+ fse->min_height = resolution->height;
+ fse->max_height = resolution->height;
+
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int pivariety_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *format)
+{
+ struct pivariety *pivariety = to_pivariety(sd);
+ struct arducam_format *current_format;
+ struct v4l2_mbus_framefmt *fmt = &format->format;
+ int cur_res_idx;
+
+ if (format->pad != 0)
+ return -EINVAL;
+
+ mutex_lock(&pivariety->mutex);
+
+ current_format =
+ &pivariety->supported_formats[pivariety->current_format_idx];
+ cur_res_idx = pivariety->current_resolution_idx;
+ format->format.width =
+ current_format->resolution_set[cur_res_idx].width;
+ format->format.height =
+ current_format->resolution_set[cur_res_idx].height;
+ format->format.code = current_format->mbus_code;
+ format->format.field = V4L2_FIELD_NONE;
+ fmt->colorspace = V4L2_COLORSPACE_RAW;
+ fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+ fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+ fmt->colorspace,
+ fmt->ycbcr_enc);
+ fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+
+ v4l2_dbg(1, debug, sd, "%s: width: (%d) height: (%d) code: (0x%X)\n",
+ __func__, format->format.width, format->format.height,
+ format->format.code);
+
+ mutex_unlock(&pivariety->mutex);
+ return 0;
+}
+
+static int pivariety_get_fmt_idx_by_code(struct pivariety *pivariety,
+ u32 mbus_code)
+{
+ int i;
+ u32 data_type;
+ struct arducam_format *formats = pivariety->supported_formats;
+
+ for (i = 0; i < pivariety->num_supported_formats; i++) {
+ if (formats[i].mbus_code == mbus_code)
+ return i;
+ }
+
+ /*
+ * If the specified format is not found in the list of supported
+ * formats, try to find a format of the same data type.
+ */
+ for (i = 0; i < ARRAY_SIZE(codes); i++)
+ if (codes[i] == mbus_code)
+ break;
+
+ if (i >= ARRAY_SIZE(codes))
+ return -EINVAL;
+
+ data_type = i / 5 + IMAGE_DT_RAW8;
+
+ for (i = 0; i < pivariety->num_supported_formats; i++) {
+ if (formats[i].data_type == data_type)
+ return i;
+ }
+
+ return -EINVAL;
+}
+
+static struct v4l2_ctrl *get_control(struct pivariety *pivariety,
+ u32 id)
+{
+ int index = 0;
+
+ while (index < MAX_CTRLS && pivariety->ctrls[index]) {
+ if (pivariety->ctrls[index]->id == id)
+ return pivariety->ctrls[index];
+ index++;
+ }
+
+ return NULL;
+}
+
+static int update_control(struct pivariety *pivariety, u32 id)
+{
+ struct v4l2_subdev *sd = &pivariety->sd;
+ struct v4l2_ctrl *ctrl;
+ u32 min, max, step, def, id2;
+ int ret = 0;
+
+ pivariety_write(pivariety, CTRL_ID_REG, id);
+ pivariety_read(pivariety, CTRL_ID_REG, &id2);
+
+ v4l2_dbg(1, debug, sd, "%s: Write ID: 0x%08X Read ID: 0x%08X\n",
+ __func__, id, id2);
+
+ pivariety_write(pivariety, CTRL_VALUE_REG, 0);
+ wait_for_free(pivariety, 1);
+
+ ret += pivariety_read(pivariety, CTRL_MAX_REG, &max);
+ ret += pivariety_read(pivariety, CTRL_MIN_REG, &min);
+ ret += pivariety_read(pivariety, CTRL_DEF_REG, &def);
+ ret += pivariety_read(pivariety, CTRL_STEP_REG, &step);
+
+ if (ret < 0)
+ goto err;
+
+ if (id == NO_DATA_AVAILABLE || max == NO_DATA_AVAILABLE ||
+ min == NO_DATA_AVAILABLE || def == NO_DATA_AVAILABLE ||
+ step == NO_DATA_AVAILABLE)
+ goto err;
+
+ v4l2_dbg(1, debug, sd, "%s: min: %d, max: %d, step: %d, def: %d\n",
+ __func__, min, max, step, def);
+
+ ctrl = get_control(pivariety, id);
+ return __v4l2_ctrl_modify_range(ctrl, min, max, step, def);
+
+err:
+ return -EINVAL;
+}
+
+static int update_controls(struct pivariety *pivariety)
+{
+ int ret = 0;
+ int index = 0;
+
+ wait_for_free(pivariety, 5);
+
+ while (index < MAX_CTRLS && pivariety->ctrls[index]) {
+ ret += update_control(pivariety, pivariety->ctrls[index]->id);
+ index++;
+ }
+
+ return ret;
+}
+
+static int pivariety_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *format)
+{
+ int i, j;
+ struct pivariety *pivariety = to_pivariety(sd);
+ struct arducam_format *supported_formats = pivariety->supported_formats;
+
+ if (format->pad != 0)
+ return -EINVAL;
+
+ mutex_lock(&pivariety->mutex);
+
+ format->format.colorspace = V4L2_COLORSPACE_RAW;
+ format->format.field = V4L2_FIELD_NONE;
+
+ v4l2_dbg(1, debug, sd, "%s: code: 0x%X, width: %d, height: %d\n",
+ __func__, format->format.code, format->format.width,
+ format->format.height);
+
+ i = pivariety_get_fmt_idx_by_code(pivariety, format->format.code);
+ if (i < 0)
+ i = 0;
+
+ format->format.code = supported_formats[i].mbus_code;
+
+ for (j = 0; j < supported_formats[i].num_resolution_set; j++) {
+ if (supported_formats[i].resolution_set[j].width ==
+ format->format.width &&
+ supported_formats[i].resolution_set[j].height ==
+ format->format.height) {
+ v4l2_dbg(1, debug, sd,
+ "%s: format match.\n", __func__);
+ v4l2_dbg(1, debug, sd,
+ "%s: set format to device: %d %d.\n",
+ __func__, supported_formats[i].index, j);
+
+ pivariety_write(pivariety, PIXFORMAT_INDEX_REG,
+ supported_formats[i].index);
+ pivariety_write(pivariety, RESOLUTION_INDEX_REG, j);
+
+ pivariety->current_format_idx = i;
+ pivariety->current_resolution_idx = j;
+
+ update_controls(pivariety);
+
+ goto unlock;
+ }
+ }
+
+ format->format.width = supported_formats[i].resolution_set[0].width;
+ format->format.height = supported_formats[i].resolution_set[0].height;
+
+ pivariety_write(pivariety, PIXFORMAT_INDEX_REG,
+ supported_formats[i].index);
+ pivariety_write(pivariety, RESOLUTION_INDEX_REG, 0);
+
+ pivariety->current_format_idx = i;
+ pivariety->current_resolution_idx = 0;
+ update_controls(pivariety);
+
+unlock:
+
+ mutex_unlock(&pivariety->mutex);
+
+ return 0;
+}
+
+/* Start streaming */
+static int pivariety_start_streaming(struct pivariety *pivariety)
+{
+ int ret;
+
+ /* set stream on register */
+ ret = pivariety_write(pivariety, MODE_SELECT_REG,
+ ARDUCAM_MODE_STREAMING);
+
+ if (ret)
+ return ret;
+
+ wait_for_free(pivariety, 2);
+
+ /*
+ * When starting streaming, controls are set in batches,
+ * and the short interval will cause some controls to be unsuccessfully
+ * set.
+ */
+ pivariety->wait_until_free = true;
+ /* Apply customized values from user */
+ ret = __v4l2_ctrl_handler_setup(pivariety->sd.ctrl_handler);
+
+ pivariety->wait_until_free = false;
+ if (ret)
+ return ret;
+
+ wait_for_free(pivariety, 2);
+
+ return ret;
+}
+
+static int pivariety_read_sel(struct pivariety *pivariety,
+ struct v4l2_rect *rect)
+{
+ int ret = 0;
+
+ ret += pivariety_read(pivariety, IPC_SEL_TOP_REG, &rect->top);
+ ret += pivariety_read(pivariety, IPC_SEL_LEFT_REG, &rect->left);
+ ret += pivariety_read(pivariety, IPC_SEL_WIDTH_REG, &rect->width);
+ ret += pivariety_read(pivariety, IPC_SEL_HEIGHT_REG, &rect->height);
+
+ if (ret || rect->top == NO_DATA_AVAILABLE ||
+ rect->left == NO_DATA_AVAILABLE ||
+ rect->width == NO_DATA_AVAILABLE ||
+ rect->height == NO_DATA_AVAILABLE) {
+ v4l2_err(&pivariety->sd, "%s: Failed to read selection.\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_rect *
+__pivariety_get_pad_crop(struct pivariety *pivariety,
+ struct v4l2_subdev_state *sd_state,
+ unsigned int pad,
+ enum v4l2_subdev_format_whence which)
+{
+ int ret;
+
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_crop(&pivariety->sd, sd_state, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ ret = pivariety_read_sel(pivariety, &pivariety->crop);
+ if (ret)
+ return NULL;
+ return &pivariety->crop;
+ }
+
+ return NULL;
+}
+
+static int pivariety_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_selection *sel)
+{
+ int ret = 0;
+ struct v4l2_rect rect;
+ struct pivariety *pivariety = to_pivariety(sd);
+
+ ret = pivariety_write(pivariety, IPC_SEL_TARGET_REG, sel->target);
+ if (ret) {
+ v4l2_err(sd, "%s: Write register 0x%02x failed\n",
+ __func__, IPC_SEL_TARGET_REG);
+ return -EINVAL;
+ }
+
+ wait_for_free(pivariety, 2);
+
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP: {
+ mutex_lock(&pivariety->mutex);
+ sel->r = *__pivariety_get_pad_crop(pivariety, sd_state,
+ sel->pad,
+ sel->which);
+ mutex_unlock(&pivariety->mutex);
+
+ return 0;
+ }
+
+ case V4L2_SEL_TGT_NATIVE_SIZE:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ ret = pivariety_read_sel(pivariety, &rect);
+ if (ret)
+ return -EINVAL;
+
+ sel->r = rect;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+/* Stop streaming */
+static int pivariety_stop_streaming(struct pivariety *pivariety)
+{
+ int ret;
+
+ /* set stream off register */
+ ret = pivariety_write(pivariety, MODE_SELECT_REG, ARDUCAM_MODE_STANDBY);
+ if (ret)
+ v4l2_err(&pivariety->sd, "%s failed to set stream\n", __func__);
+
+ /*
+ * Return success even if it was an error, as there is nothing the
+ * caller can do about it.
+ */
+ return 0;
+}
+
+static int pivariety_set_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct pivariety *pivariety = to_pivariety(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+
+ mutex_lock(&pivariety->mutex);
+ if (pivariety->streaming == enable) {
+ mutex_unlock(&pivariety->mutex);
+ return 0;
+ }
+
+ if (enable) {
+ ret = pm_runtime_get_sync(&client->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&client->dev);
+ goto err_unlock;
+ }
+
+ /*
+ * Apply default & customized values
+ * and then start streaming.
+ */
+ ret = pivariety_start_streaming(pivariety);
+ if (ret)
+ goto err_rpm_put;
+ } else {
+ pivariety_stop_streaming(pivariety);
+ pm_runtime_put(&client->dev);
+ }
+
+ pivariety->streaming = enable;
+
+ /*
+ * vflip and hflip cannot change during streaming
+ * Pivariety may not implement flip control.
+ */
+ if (pivariety->vflip)
+ __v4l2_ctrl_grab(pivariety->vflip, enable);
+
+ if (pivariety->hflip)
+ __v4l2_ctrl_grab(pivariety->hflip, enable);
+
+ mutex_unlock(&pivariety->mutex);
+
+ return ret;
+
+err_rpm_put:
+ pm_runtime_put(&client->dev);
+err_unlock:
+ mutex_unlock(&pivariety->mutex);
+
+ return ret;
+}
+
+static int __maybe_unused pivariety_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct pivariety *pivariety = to_pivariety(sd);
+
+ if (pivariety->streaming)
+ pivariety_stop_streaming(pivariety);
+
+ return 0;
+}
+
+static int __maybe_unused pivariety_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct pivariety *pivariety = to_pivariety(sd);
+ int ret;
+
+ if (pivariety->streaming) {
+ ret = pivariety_start_streaming(pivariety);
+ if (ret)
+ goto error;
+ }
+
+ return 0;
+
+error:
+ pivariety_stop_streaming(pivariety);
+ pivariety->streaming = 0;
+ return ret;
+}
+
+static int pivariety_get_regulators(struct pivariety *pivariety)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&pivariety->sd);
+ int i;
+
+ for (i = 0; i < ARDUCAM_NUM_SUPPLIES; i++)
+ pivariety->supplies[i].supply = pivariety_supply_name[i];
+
+ return devm_regulator_bulk_get(&client->dev,
+ ARDUCAM_NUM_SUPPLIES,
+ pivariety->supplies);
+}
+
+static int pivariety_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad,
+ struct v4l2_mbus_config *cfg)
+{
+ struct pivariety *pivariety = to_pivariety(sd);
+ const u32 mask = V4L2_MBUS_CSI2_LANE_MASK;
+
+ if (pivariety->lanes > pivariety->bus.num_data_lanes)
+ return -EINVAL;
+
+ cfg->type = V4L2_MBUS_CSI2_DPHY;
+ cfg->flags = (pivariety->lanes << __ffs(mask)) & mask;
+
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops pivariety_core_ops = {
+ .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static const struct v4l2_subdev_video_ops pivariety_video_ops = {
+ .s_stream = pivariety_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops pivariety_pad_ops = {
+ .enum_mbus_code = pivariety_enum_mbus_code,
+ .get_fmt = pivariety_get_fmt,
+ .set_fmt = pivariety_set_fmt,
+ .enum_frame_size = pivariety_enum_framesizes,
+ .get_selection = pivariety_get_selection,
+ .get_mbus_config = pivariety_get_mbus_config,
+};
+
+static const struct v4l2_subdev_ops pivariety_subdev_ops = {
+ .core = &pivariety_core_ops,
+ .video = &pivariety_video_ops,
+ .pad = &pivariety_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops pivariety_internal_ops = {
+ .open = pivariety_open,
+};
+
+static void pivariety_free_controls(struct pivariety *pivariety)
+{
+ v4l2_ctrl_handler_free(pivariety->sd.ctrl_handler);
+ mutex_destroy(&pivariety->mutex);
+}
+
+static int pivariety_get_length_of_set(struct pivariety *pivariety,
+ u16 idx_reg, u16 val_reg)
+{
+ int ret;
+ int index = 0;
+ u32 val;
+
+ while (1) {
+ ret = pivariety_write(pivariety, idx_reg, index);
+ ret += pivariety_read(pivariety, val_reg, &val);
+
+ if (ret < 0)
+ return -1;
+
+ if (val == NO_DATA_AVAILABLE)
+ break;
+ index++;
+ }
+ pivariety_write(pivariety, idx_reg, 0);
+ return index;
+}
+
+static int pivariety_enum_resolution(struct pivariety *pivariety,
+ struct arducam_format *format)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&pivariety->sd);
+ int index = 0;
+ u32 width, height;
+ int num_resolution = 0;
+ int ret;
+
+ num_resolution = pivariety_get_length_of_set(pivariety,
+ RESOLUTION_INDEX_REG,
+ FORMAT_WIDTH_REG);
+ if (num_resolution < 0)
+ goto err;
+
+ format->resolution_set = devm_kzalloc(&client->dev,
+ sizeof(*format->resolution_set) *
+ num_resolution,
+ GFP_KERNEL);
+ while (1) {
+ ret = pivariety_write(pivariety, RESOLUTION_INDEX_REG, index);
+ ret += pivariety_read(pivariety, FORMAT_WIDTH_REG, &width);
+ ret += pivariety_read(pivariety, FORMAT_HEIGHT_REG, &height);
+
+ if (ret < 0)
+ goto err;
+
+ if (width == NO_DATA_AVAILABLE || height == NO_DATA_AVAILABLE)
+ break;
+
+ format->resolution_set[index].width = width;
+ format->resolution_set[index].height = height;
+
+ index++;
+ }
+
+ format->num_resolution_set = index;
+ pivariety_write(pivariety, RESOLUTION_INDEX_REG, 0);
+ return 0;
+err:
+ return -ENODEV;
+}
+
+static int pivariety_enum_pixformat(struct pivariety *pivariety)
+{
+ int ret = 0;
+ u32 mbus_code = 0;
+ int pixfmt_type;
+ int bayer_order;
+ int bayer_order_not_volatile;
+ int lanes;
+ int index = 0;
+ int num_pixformat = 0;
+ struct arducam_format *arducam_fmt;
+ struct i2c_client *client = v4l2_get_subdevdata(&pivariety->sd);
+
+ num_pixformat = pivariety_get_length_of_set(pivariety,
+ PIXFORMAT_INDEX_REG,
+ PIXFORMAT_TYPE_REG);
+
+ if (num_pixformat < 0)
+ goto err;
+
+ ret = pivariety_read(pivariety, FLIPS_DONT_CHANGE_ORDER_REG,
+ &bayer_order_not_volatile);
+ if (bayer_order_not_volatile == NO_DATA_AVAILABLE)
+ pivariety->bayer_order_volatile = 1;
+ else
+ pivariety->bayer_order_volatile = !bayer_order_not_volatile;
+
+ if (ret < 0)
+ goto err;
+
+ pivariety->supported_formats =
+ devm_kzalloc(&client->dev,
+ sizeof(*pivariety->supported_formats) *
+ num_pixformat,
+ GFP_KERNEL);
+
+ while (1) {
+ ret = pivariety_write(pivariety, PIXFORMAT_INDEX_REG, index);
+ ret += pivariety_read(pivariety, PIXFORMAT_TYPE_REG,
+ &pixfmt_type);
+
+ if (pixfmt_type == NO_DATA_AVAILABLE)
+ break;
+
+ ret += pivariety_read(pivariety, MIPI_LANES_REG, &lanes);
+ if (lanes == NO_DATA_AVAILABLE)
+ break;
+
+ ret += pivariety_read(pivariety, PIXFORMAT_ORDER_REG,
+ &bayer_order);
+ if (ret < 0)
+ goto err;
+
+ mbus_code = data_type_to_mbus_code(pixfmt_type, bayer_order);
+ arducam_fmt = &pivariety->supported_formats[index];
+ arducam_fmt->index = index;
+ arducam_fmt->mbus_code = mbus_code;
+ arducam_fmt->bayer_order = bayer_order;
+ arducam_fmt->data_type = pixfmt_type;
+ if (pivariety_enum_resolution(pivariety, arducam_fmt))
+ goto err;
+
+ index++;
+ }
+
+ pivariety_write(pivariety, PIXFORMAT_INDEX_REG, 0);
+ pivariety->num_supported_formats = index;
+ pivariety->current_format_idx = 0;
+ pivariety->current_resolution_idx = 0;
+ pivariety->lanes = lanes;
+
+ return 0;
+
+err:
+ return -ENODEV;
+}
+
+static const char *pivariety_ctrl_get_name(u32 id)
+{
+ switch (id) {
+ case V4L2_CID_ARDUCAM_EXT_TRI:
+ return "trigger_mode";
+ case V4L2_CID_ARDUCAM_IRCUT:
+ return "ircut";
+ default:
+ return NULL;
+ }
+}
+
+enum v4l2_ctrl_type pivariety_get_v4l2_ctrl_type(u32 id)
+{
+ switch (id) {
+ case V4L2_CID_ARDUCAM_EXT_TRI:
+ return V4L2_CTRL_TYPE_BOOLEAN;
+ case V4L2_CID_ARDUCAM_IRCUT:
+ return V4L2_CTRL_TYPE_BOOLEAN;
+ default:
+ return V4L2_CTRL_TYPE_INTEGER;
+ }
+}
+
+static struct v4l2_ctrl *v4l2_ctrl_new_arducam(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_ops *ops,
+ u32 id, s64 min, s64 max,
+ u64 step, s64 def)
+{
+ struct v4l2_ctrl_config ctrl_cfg = {
+ .ops = ops,
+ .id = id,
+ .name = NULL,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .flags = 0,
+ .min = min,
+ .max = max,
+ .def = def,
+ .step = step,
+ };
+
+ ctrl_cfg.name = pivariety_ctrl_get_name(id);
+ ctrl_cfg.type = pivariety_get_v4l2_ctrl_type(id);
+
+ return v4l2_ctrl_new_custom(hdl, &ctrl_cfg, NULL);
+}
+
+static int pivariety_enum_controls(struct pivariety *pivariety)
+{
+ struct v4l2_subdev *sd = &pivariety->sd;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct v4l2_ctrl_handler *ctrl_hdlr = &pivariety->ctrl_handler;
+ struct v4l2_fwnode_device_properties props;
+ struct v4l2_ctrl **ctrl = pivariety->ctrls;
+ int ret, index, num_ctrls;
+ u32 id, min, max, def, step;
+
+ num_ctrls = pivariety_get_length_of_set(pivariety, CTRL_INDEX_REG,
+ CTRL_ID_REG);
+ if (num_ctrls < 0)
+ goto err;
+
+ v4l2_dbg(1, debug, sd, "%s: num_ctrls = %d\n",
+ __func__, num_ctrls);
+
+ ret = v4l2_ctrl_handler_init(ctrl_hdlr, num_ctrls);
+ if (ret)
+ return ret;
+
+ index = 0;
+ while (1) {
+ ret = pivariety_write(pivariety, CTRL_INDEX_REG, index);
+ pivariety_write(pivariety, CTRL_VALUE_REG, 0);
+ wait_for_free(pivariety, 1);
+
+ ret += pivariety_read(pivariety, CTRL_ID_REG, &id);
+ ret += pivariety_read(pivariety, CTRL_MAX_REG, &max);
+ ret += pivariety_read(pivariety, CTRL_MIN_REG, &min);
+ ret += pivariety_read(pivariety, CTRL_DEF_REG, &def);
+ ret += pivariety_read(pivariety, CTRL_STEP_REG, &step);
+ if (ret < 0)
+ goto err;
+
+ if (id == NO_DATA_AVAILABLE || max == NO_DATA_AVAILABLE ||
+ min == NO_DATA_AVAILABLE || def == NO_DATA_AVAILABLE ||
+ step == NO_DATA_AVAILABLE)
+ break;
+
+ v4l2_dbg(1, debug, sd,
+ "%s: index = %d, id = 0x%x, max = %d, min = %d, def = %d, step = %d\n",
+ __func__, index, id, max, min, def, step);
+
+ if (v4l2_ctrl_get_name(id)) {
+ *ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
+ &pivariety_ctrl_ops,
+ id, min,
+ max, step,
+ def);
+ v4l2_dbg(1, debug, sd, "%s: ctrl: 0x%p\n",
+ __func__, *ctrl);
+ } else if (pivariety_ctrl_get_name(id)) {
+ *ctrl = v4l2_ctrl_new_arducam(ctrl_hdlr,
+ &pivariety_ctrl_ops,
+ id, min, max, step, def);
+
+ v4l2_dbg(1, debug, sd,
+ "%s: new custom ctrl, ctrl: 0x%p.\n",
+ __func__, *ctrl);
+ } else {
+ index++;
+ continue;
+ }
+
+ if (!*ctrl)
+ goto err;
+
+ switch (id) {
+ case V4L2_CID_HFLIP:
+ pivariety->hflip = *ctrl;
+ if (pivariety->bayer_order_volatile)
+ pivariety->hflip->flags |=
+ V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+ break;
+
+ case V4L2_CID_VFLIP:
+ pivariety->vflip = *ctrl;
+ if (pivariety->bayer_order_volatile)
+ pivariety->vflip->flags |=
+ V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+ break;
+
+ case V4L2_CID_HBLANK:
+ (*ctrl)->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ break;
+ }
+
+ ctrl++;
+ index++;
+ }
+
+ pivariety_write(pivariety, CTRL_INDEX_REG, 0);
+
+ ret = v4l2_fwnode_device_parse(&client->dev, &props);
+ if (ret)
+ goto err;
+
+ ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr,
+ &pivariety_ctrl_ops,
+ &props);
+ if (ret)
+ goto err;
+
+ pivariety->sd.ctrl_handler = ctrl_hdlr;
+ v4l2_ctrl_handler_setup(ctrl_hdlr);
+ return 0;
+err:
+ return -ENODEV;
+}
+
+static int pivariety_parse_dt(struct pivariety *pivariety, struct device *dev)
+{
+ struct fwnode_handle *endpoint;
+ struct v4l2_fwnode_endpoint ep_cfg = {
+ .bus_type = V4L2_MBUS_CSI2_DPHY
+ };
+ int ret = -EINVAL;
+
+ /* Get CSI2 bus config */
+ endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
+ if (!endpoint) {
+ dev_err(dev, "endpoint node not found\n");
+ return -EINVAL;
+ }
+
+ if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
+ dev_err(dev, "could not parse endpoint\n");
+ goto error_out;
+ }
+
+ pivariety->bus = ep_cfg.bus.mipi_csi2;
+
+ ret = 0;
+
+error_out:
+ v4l2_fwnode_endpoint_free(&ep_cfg);
+ fwnode_handle_put(endpoint);
+
+ return ret;
+}
+
+static int pivariety_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct pivariety *pivariety;
+ u32 device_id, firmware_version;
+ int ret;
+
+ pivariety = devm_kzalloc(&client->dev, sizeof(*pivariety), GFP_KERNEL);
+ if (!pivariety)
+ return -ENOMEM;
+
+ /* Initialize subdev */
+ v4l2_i2c_subdev_init(&pivariety->sd, client,
+ &pivariety_subdev_ops);
+
+ if (pivariety_parse_dt(pivariety, dev))
+ return -EINVAL;
+
+ /* Get system clock (xclk) */
+ pivariety->xclk = devm_clk_get(dev, "xclk");
+ if (IS_ERR(pivariety->xclk)) {
+ dev_err(dev, "failed to get xclk\n");
+ return PTR_ERR(pivariety->xclk);
+ }
+
+ pivariety->xclk_freq = clk_get_rate(pivariety->xclk);
+ if (pivariety->xclk_freq != 24000000) {
+ dev_err(dev, "xclk frequency not supported: %d Hz\n",
+ pivariety->xclk_freq);
+ return -EINVAL;
+ }
+
+ ret = pivariety_get_regulators(pivariety);
+ if (ret)
+ return ret;
+
+ /* Request optional enable pin */
+ pivariety->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+ GPIOD_OUT_HIGH);
+
+ ret = pivariety_power_on(dev);
+ if (ret)
+ return ret;
+
+ ret = pivariety_read(pivariety, DEVICE_ID_REG, &device_id);
+ if (ret || device_id != DEVICE_ID) {
+ dev_err(dev, "probe failed\n");
+ ret = -ENODEV;
+ goto error_power_off;
+ }
+
+ ret = pivariety_read(pivariety, DEVICE_VERSION_REG, &firmware_version);
+ if (ret)
+ dev_err(dev, "read firmware version failed\n");
+
+ dev_info(dev, "firmware version: 0x%04X\n", firmware_version);
+
+ if (pivariety_enum_pixformat(pivariety)) {
+ dev_err(dev, "enum pixformat failed.\n");
+ ret = -ENODEV;
+ goto error_power_off;
+ }
+
+ if (pivariety_enum_controls(pivariety)) {
+ dev_err(dev, "enum controls failed.\n");
+ ret = -ENODEV;
+ goto error_power_off;
+ }
+
+ /* Initialize subdev */
+ pivariety->sd.internal_ops = &pivariety_internal_ops;
+ pivariety->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ pivariety->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ /* Initialize source pad */
+ pivariety->pad.flags = MEDIA_PAD_FL_SOURCE;
+
+ ret = media_entity_pads_init(&pivariety->sd.entity, 1, &pivariety->pad);
+ if (ret)
+ goto error_handler_free;
+
+ ret = v4l2_async_register_subdev_sensor(&pivariety->sd);
+ if (ret < 0)
+ goto error_media_entity;
+
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_idle(dev);
+
+ return 0;
+
+error_media_entity:
+ media_entity_cleanup(&pivariety->sd.entity);
+
+error_handler_free:
+ pivariety_free_controls(pivariety);
+
+error_power_off:
+ pivariety_power_off(dev);
+
+ return ret;
+}
+
+static int pivariety_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct pivariety *pivariety = to_pivariety(sd);
+
+ v4l2_async_unregister_subdev(sd);
+ media_entity_cleanup(&sd->entity);
+ pivariety_free_controls(pivariety);
+
+ pm_runtime_disable(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+
+ return 0;
+}
+
+static const struct dev_pm_ops pivariety_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pivariety_suspend, pivariety_resume)
+ SET_RUNTIME_PM_OPS(pivariety_power_off, pivariety_power_on, NULL)
+};
+
+static const struct of_device_id arducam_pivariety_dt_ids[] = {
+ { .compatible = "arducam,arducam-pivariety" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, arducam_pivariety_dt_ids);
+
+static struct i2c_driver arducam_pivariety_i2c_driver = {
+ .driver = {
+ .name = "arducam-pivariety",
+ .of_match_table = arducam_pivariety_dt_ids,
+ .pm = &pivariety_pm_ops,
+ },
+ .probe = pivariety_probe,
+ .remove = pivariety_remove,
+};
+
+module_i2c_driver(arducam_pivariety_i2c_driver);
+
+MODULE_AUTHOR("Lee Jackson <info@arducam.com>");
+MODULE_DESCRIPTION("Arducam Pivariety v4l2 driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+++ b/drivers/media/i2c/arducam-pivariety.h
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ARDUCAM_PIVARIETY_H_
+#define _ARDUCAM_PIVARIETY_H_
+
+#define DEVICE_REG_BASE 0x0100
+#define PIXFORMAT_REG_BASE 0x0200
+#define FORMAT_REG_BASE 0x0300
+#define CTRL_REG_BASE 0x0400
+#define IPC_REG_BASE 0x0600
+
+#define ARDUCAM_MODE_STANDBY 0x00
+#define ARDUCAM_MODE_STREAMING 0x01
+
+#define MODE_SELECT_REG (DEVICE_REG_BASE | 0x0000)
+#define DEVICE_VERSION_REG (DEVICE_REG_BASE | 0x0001)
+#define SENSOR_ID_REG (DEVICE_REG_BASE | 0x0002)
+#define DEVICE_ID_REG (DEVICE_REG_BASE | 0x0003)
+#define SYSTEM_IDLE_REG (DEVICE_REG_BASE | 0x0007)
+
+#define PIXFORMAT_INDEX_REG (PIXFORMAT_REG_BASE | 0x0000)
+#define PIXFORMAT_TYPE_REG (PIXFORMAT_REG_BASE | 0x0001)
+#define PIXFORMAT_ORDER_REG (PIXFORMAT_REG_BASE | 0x0002)
+#define MIPI_LANES_REG (PIXFORMAT_REG_BASE | 0x0003)
+#define FLIPS_DONT_CHANGE_ORDER_REG (PIXFORMAT_REG_BASE | 0x0004)
+
+#define RESOLUTION_INDEX_REG (FORMAT_REG_BASE | 0x0000)
+#define FORMAT_WIDTH_REG (FORMAT_REG_BASE | 0x0001)
+#define FORMAT_HEIGHT_REG (FORMAT_REG_BASE | 0x0002)
+
+#define CTRL_INDEX_REG (CTRL_REG_BASE | 0x0000)
+#define CTRL_ID_REG (CTRL_REG_BASE | 0x0001)
+#define CTRL_MIN_REG (CTRL_REG_BASE | 0x0002)
+#define CTRL_MAX_REG (CTRL_REG_BASE | 0x0003)
+#define CTRL_STEP_REG (CTRL_REG_BASE | 0x0004)
+#define CTRL_DEF_REG (CTRL_REG_BASE | 0x0005)
+#define CTRL_VALUE_REG (CTRL_REG_BASE | 0x0006)
+
+#define IPC_SEL_TARGET_REG (IPC_REG_BASE | 0x0000)
+#define IPC_SEL_TOP_REG (IPC_REG_BASE | 0x0001)
+#define IPC_SEL_LEFT_REG (IPC_REG_BASE | 0x0002)
+#define IPC_SEL_WIDTH_REG (IPC_REG_BASE | 0x0003)
+#define IPC_SEL_HEIGHT_REG (IPC_REG_BASE | 0x0004)
+#define IPC_DELAY_REG (IPC_REG_BASE | 0x0005)
+
+#define NO_DATA_AVAILABLE 0xFFFFFFFE
+
+#define DEVICE_ID 0x0030
+
+#define I2C_READ_RETRY_COUNT 3
+#define I2C_WRITE_RETRY_COUNT 2
+
+#define V4L2_CID_ARDUCAM_BASE (V4L2_CID_USER_BASE + 0x1000)
+#define V4L2_CID_ARDUCAM_EXT_TRI (V4L2_CID_ARDUCAM_BASE + 1)
+#define V4L2_CID_ARDUCAM_IRCUT (V4L2_CID_ARDUCAM_BASE + 8)
+
+enum image_dt {
+ IMAGE_DT_YUV420_8 = 0x18,
+ IMAGE_DT_YUV420_10,
+
+ IMAGE_DT_YUV420CSPS_8 = 0x1C,
+ IMAGE_DT_YUV420CSPS_10,
+ IMAGE_DT_YUV422_8,
+ IMAGE_DT_YUV422_10,
+ IMAGE_DT_RGB444,
+ IMAGE_DT_RGB555,
+ IMAGE_DT_RGB565,
+ IMAGE_DT_RGB666,
+ IMAGE_DT_RGB888,
+
+ IMAGE_DT_RAW6 = 0x28,
+ IMAGE_DT_RAW7,
+ IMAGE_DT_RAW8,
+ IMAGE_DT_RAW10,
+ IMAGE_DT_RAW12,
+ IMAGE_DT_RAW14,
+};
+
+enum bayer_order {
+ BAYER_ORDER_BGGR = 0,
+ BAYER_ORDER_GBRG = 1,
+ BAYER_ORDER_GRBG = 2,
+ BAYER_ORDER_RGGB = 3,
+ BAYER_ORDER_GRAY = 4,
+};
+
+enum yuv_order {
+ YUV_ORDER_YUYV = 0,
+ YUV_ORDER_YVYU = 1,
+ YUV_ORDER_UYVY = 2,
+ YUV_ORDER_VYUY = 3,
+};
+
+struct arducam_resolution {
+ u32 width;
+ u32 height;
+};
+
+struct arducam_format {
+ u32 index;
+ u32 mbus_code;
+ u32 bayer_order;
+ u32 data_type;
+ u32 num_resolution_set;
+ struct arducam_resolution *resolution_set;
+};
+
+#endif
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