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Message-ID: <20250911100847.277408-5-Bin.Du@amd.com>
Date: Thu, 11 Sep 2025 18:08:44 +0800
From: Bin Du <Bin.Du@....com>
To: <mchehab@...nel.org>, <hverkuil@...all.nl>,
<laurent.pinchart+renesas@...asonboard.com>, <bryan.odonoghue@...aro.org>,
<sakari.ailus@...ux.intel.com>, <prabhakar.mahadev-lad.rj@...renesas.com>,
<linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<sultan@...neltoast.com>
CC: <pratap.nirujogi@....com>, <benjamin.chan@....com>, <king.li@....com>,
<gjorgji.rosikopulos@....com>, <Phil.Jawich@....com>,
<Dominic.Antony@....com>, <mario.limonciello@....com>,
<richard.gong@....com>, <anson.tsao@....com>, <bin.du@....com>, Bin Du
<Bin.Du@....com>, Svetoslav Stoilov <Svetoslav.Stoilov@....com>, "Alexey
Zagorodnikov" <xglooom@...il.com>
Subject: [PATCH v4 4/7] media: platform: amd: isp4 subdev and firmware loading handling added
Isp4 sub-device is implementing v4l2 sub-device interface. It has one
capture video node, and supports only preview stream. It manages firmware
states, stream configuration. Add interrupt handling and notification for
isp firmware to isp-subdevice.
Co-developed-by: Svetoslav Stoilov <Svetoslav.Stoilov@....com>
Signed-off-by: Svetoslav Stoilov <Svetoslav.Stoilov@....com>
Signed-off-by: Bin Du <Bin.Du@....com>
Tested-by: Alexey Zagorodnikov <xglooom@...il.com>
---
MAINTAINERS | 2 +
drivers/media/platform/amd/isp4/Makefile | 3 +-
drivers/media/platform/amd/isp4/isp4.c | 120 +-
drivers/media/platform/amd/isp4/isp4.h | 8 +-
drivers/media/platform/amd/isp4/isp4_subdev.c | 1095 +++++++++++++++++
drivers/media/platform/amd/isp4/isp4_subdev.h | 131 ++
6 files changed, 1346 insertions(+), 13 deletions(-)
create mode 100644 drivers/media/platform/amd/isp4/isp4_subdev.c
create mode 100644 drivers/media/platform/amd/isp4/isp4_subdev.h
diff --git a/MAINTAINERS b/MAINTAINERS
index cccae369c876..48ffc8bbdcee 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1149,6 +1149,8 @@ F: drivers/media/platform/amd/isp4/isp4_fw_cmd_resp.h
F: drivers/media/platform/amd/isp4/isp4_hw_reg.h
F: drivers/media/platform/amd/isp4/isp4_interface.c
F: drivers/media/platform/amd/isp4/isp4_interface.h
+F: drivers/media/platform/amd/isp4/isp4_subdev.c
+F: drivers/media/platform/amd/isp4/isp4_subdev.h
AMD KFD
M: Felix Kuehling <Felix.Kuehling@....com>
diff --git a/drivers/media/platform/amd/isp4/Makefile b/drivers/media/platform/amd/isp4/Makefile
index 327ed1157076..905788bc6a1e 100644
--- a/drivers/media/platform/amd/isp4/Makefile
+++ b/drivers/media/platform/amd/isp4/Makefile
@@ -3,5 +3,6 @@
# Copyright (C) 2025 Advanced Micro Devices, Inc.
obj-$(CONFIG_AMD_ISP4) += amd_capture.o
-amd_capture-objs := isp4.o \
+amd_capture-objs := isp4_subdev.o \
isp4_interface.o \
+ isp4.o \
diff --git a/drivers/media/platform/amd/isp4/isp4.c b/drivers/media/platform/amd/isp4/isp4.c
index 6ff3ded4310a..8cec27228710 100644
--- a/drivers/media/platform/amd/isp4/isp4.c
+++ b/drivers/media/platform/amd/isp4/isp4.c
@@ -5,13 +5,19 @@
#include <linux/pm_runtime.h>
#include <linux/vmalloc.h>
+
+#include <media/v4l2-fwnode.h>
#include <media/v4l2-ioctl.h>
#include "isp4.h"
-
-#define VIDEO_BUF_NUM 5
+#include "isp4_hw_reg.h"
#define ISP4_DRV_NAME "amd_isp_capture"
+#define ISP4_FW_RESP_RB_IRQ_STATUS_MASK \
+ (ISP_SYS_INT0_STATUS__SYS_INT_RINGBUFFER_WPT9_INT_MASK | \
+ ISP_SYS_INT0_STATUS__SYS_INT_RINGBUFFER_WPT10_INT_MASK | \
+ ISP_SYS_INT0_STATUS__SYS_INT_RINGBUFFER_WPT11_INT_MASK | \
+ ISP_SYS_INT0_STATUS__SYS_INT_RINGBUFFER_WPT12_INT_MASK)
/* interrupt num */
static const u32 isp4_ringbuf_interrupt_num[] = {
@@ -21,19 +27,95 @@ static const u32 isp4_ringbuf_interrupt_num[] = {
4, /* ISP_4_1__SRCID__ISP_RINGBUFFER_WPT12 */
};
-#define to_isp4_device(dev) \
- ((struct isp4_device *)container_of(dev, struct isp4_device, v4l2_dev))
+#define to_isp4_device(dev) container_of(dev, struct isp4_device, v4l2_dev)
+
+static void isp4_wake_up_resp_thread(struct isp4_subdev *isp, u32 index)
+{
+ if (isp && index < ISP4SD_MAX_FW_RESP_STREAM_NUM) {
+ struct isp4sd_thread_handler *thread_ctx =
+ &isp->fw_resp_thread[index];
+
+ thread_ctx->wq_cond = 1;
+ wake_up_interruptible(&thread_ctx->waitq);
+ }
+}
+
+static void isp4_resp_interrupt_notify(struct isp4_subdev *isp, u32 intr_status)
+{
+ bool wake = (isp->ispif.status == ISP4IF_STATUS_FW_RUNNING);
+
+ u32 intr_ack = 0;
+
+ /* global response */
+ if (intr_status &
+ ISP_SYS_INT0_STATUS__SYS_INT_RINGBUFFER_WPT12_INT_MASK) {
+ if (wake)
+ isp4_wake_up_resp_thread(isp, 0);
+
+ intr_ack |= ISP_SYS_INT0_ACK__SYS_INT_RINGBUFFER_WPT12_ACK_MASK;
+ }
+
+ /* stream 1 response */
+ if (intr_status &
+ ISP_SYS_INT0_STATUS__SYS_INT_RINGBUFFER_WPT9_INT_MASK) {
+ if (wake)
+ isp4_wake_up_resp_thread(isp, 1);
+
+ intr_ack |= ISP_SYS_INT0_ACK__SYS_INT_RINGBUFFER_WPT9_ACK_MASK;
+ }
+
+ /* stream 2 response */
+ if (intr_status &
+ ISP_SYS_INT0_STATUS__SYS_INT_RINGBUFFER_WPT10_INT_MASK) {
+ if (wake)
+ isp4_wake_up_resp_thread(isp, 2);
+
+ intr_ack |= ISP_SYS_INT0_ACK__SYS_INT_RINGBUFFER_WPT10_ACK_MASK;
+ }
+
+ /* stream 3 response */
+ if (intr_status &
+ ISP_SYS_INT0_STATUS__SYS_INT_RINGBUFFER_WPT11_INT_MASK) {
+ if (wake)
+ isp4_wake_up_resp_thread(isp, 3);
+
+ intr_ack |= ISP_SYS_INT0_ACK__SYS_INT_RINGBUFFER_WPT11_ACK_MASK;
+ }
+
+ /* clear ISP_SYS interrupts */
+ isp4hw_wreg(ISP4_GET_ISP_REG_BASE(isp), ISP_SYS_INT0_ACK, intr_ack);
+}
static irqreturn_t isp4_irq_handler(int irq, void *arg)
{
+ struct isp4_device *isp_dev = dev_get_drvdata(arg);
+ struct isp4_subdev *isp = NULL;
+ u32 isp_sys_irq_status = 0x0;
+ u32 r1;
+
+ if (!isp_dev)
+ goto error_drv_data;
+
+ isp = &isp_dev->isp_sdev;
+ /* check ISP_SYS interrupts status */
+ r1 = isp4hw_rreg(ISP4_GET_ISP_REG_BASE(isp), ISP_SYS_INT0_STATUS);
+
+ isp_sys_irq_status = r1 & ISP4_FW_RESP_RB_IRQ_STATUS_MASK;
+
+ isp4_resp_interrupt_notify(isp, isp_sys_irq_status);
+
+error_drv_data:
return IRQ_HANDLED;
}
static int isp4_capture_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
+ struct isp4_subdev *isp_sdev;
struct isp4_device *isp_dev;
- int i, irq, ret;
+ size_t i;
+ int irq;
+ int ret;
isp_dev = devm_kzalloc(&pdev->dev, sizeof(*isp_dev), GFP_KERNEL);
if (!isp_dev)
@@ -42,6 +124,12 @@ static int isp4_capture_probe(struct platform_device *pdev)
isp_dev->pdev = pdev;
dev->init_name = ISP4_DRV_NAME;
+ isp_sdev = &isp_dev->isp_sdev;
+ isp_sdev->mmio = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(isp_sdev->mmio))
+ return dev_err_probe(dev, PTR_ERR(isp_sdev->mmio),
+ "isp ioremap fail\n");
+
for (i = 0; i < ARRAY_SIZE(isp4_ringbuf_interrupt_num); i++) {
irq = platform_get_irq(pdev, isp4_ringbuf_interrupt_num[i]);
if (irq < 0)
@@ -55,6 +143,8 @@ static int isp4_capture_probe(struct platform_device *pdev)
irq);
}
+ isp_dev->pltf_data = pdev->dev.platform_data;
+
/* Link the media device within the v4l2_device */
isp_dev->v4l2_dev.mdev = &isp_dev->mdev;
@@ -66,6 +156,8 @@ static int isp4_capture_probe(struct platform_device *pdev)
isp_dev->mdev.dev = &pdev->dev;
media_device_init(&isp_dev->mdev);
+ pm_runtime_set_suspended(dev);
+ pm_runtime_enable(dev);
/* register v4l2 device */
snprintf(isp_dev->v4l2_dev.name, sizeof(isp_dev->v4l2_dev.name),
"AMD-V4L2-ROOT");
@@ -74,19 +166,24 @@ static int isp4_capture_probe(struct platform_device *pdev)
return dev_err_probe(dev, ret,
"fail register v4l2 device\n");
+ ret = isp4sd_init(&isp_dev->isp_sdev, &isp_dev->v4l2_dev);
+ if (ret) {
+ dev_err(dev, "fail init isp4 sub dev %d\n", ret);
+ goto err_unreg_v4l2;
+ }
+
ret = media_device_register(&isp_dev->mdev);
if (ret) {
dev_err(dev, "fail to register media device %d\n", ret);
- goto err_unreg_v4l2;
+ goto err_isp4_deinit;
}
platform_set_drvdata(pdev, isp_dev);
- pm_runtime_set_suspended(dev);
- pm_runtime_enable(dev);
-
return 0;
+err_isp4_deinit:
+ isp4sd_deinit(&isp_dev->isp_sdev);
err_unreg_v4l2:
v4l2_device_unregister(&isp_dev->v4l2_dev);
@@ -97,8 +194,13 @@ static void isp4_capture_remove(struct platform_device *pdev)
{
struct isp4_device *isp_dev = platform_get_drvdata(pdev);
+ v4l2_device_unregister_subdev(&isp_dev->isp_sdev.sdev);
+
media_device_unregister(&isp_dev->mdev);
+ media_entity_cleanup(&isp_dev->isp_sdev.sdev.entity);
v4l2_device_unregister(&isp_dev->v4l2_dev);
+
+ isp4sd_deinit(&isp_dev->isp_sdev);
}
static struct platform_driver isp4_capture_drv = {
diff --git a/drivers/media/platform/amd/isp4/isp4.h b/drivers/media/platform/amd/isp4/isp4.h
index 8535f662ab49..00ac11ed8fb0 100644
--- a/drivers/media/platform/amd/isp4/isp4.h
+++ b/drivers/media/platform/amd/isp4/isp4.h
@@ -6,19 +6,21 @@
#ifndef _ISP4_H_
#define _ISP4_H_
+#include <drm/amd/isp.h>
#include <linux/mutex.h>
-#include <media/v4l2-device.h>
-#include <media/videobuf2-memops.h>
-#include <media/videobuf2-vmalloc.h>
+#include "isp4_subdev.h"
#define ISP4_GET_ISP_REG_BASE(isp4sd) (((isp4sd))->mmio)
struct isp4_device {
struct v4l2_device v4l2_dev;
+ struct isp4_subdev isp_sdev;
struct media_device mdev;
+ struct isp_platform_data *pltf_data;
struct platform_device *pdev;
struct notifier_block i2c_nb;
+ struct v4l2_async_notifier notifier;
};
#endif /* _ISP4_H_ */
diff --git a/drivers/media/platform/amd/isp4/isp4_subdev.c b/drivers/media/platform/amd/isp4/isp4_subdev.c
new file mode 100644
index 000000000000..a9cb14de04ca
--- /dev/null
+++ b/drivers/media/platform/amd/isp4/isp4_subdev.c
@@ -0,0 +1,1095 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2025 Advanced Micro Devices, Inc.
+ */
+
+#include <linux/mutex.h>
+#include <linux/pm_domain.h>
+#include <linux/pm_runtime.h>
+
+#include "isp4_fw_cmd_resp.h"
+#include "isp4_interface.h"
+#include "isp4_subdev.h"
+#include <linux/units.h>
+
+#define ISP4SD_MAX_CMD_RESP_BUF_SIZE (4 * 1024)
+#define ISP4SD_MIN_BUF_CNT_BEF_START_STREAM 4
+
+#define ISP4SD_PERFORMANCE_STATE_LOW 0
+#define ISP4SD_PERFORMANCE_STATE_HIGH 1
+
+#define ISP4SD_FW_CMD_TIMEOUT_IN_MS 500
+#define ISP4SD_WAIT_RESP_IRQ_TIMEOUT 5 /* ms */
+/* align 32KB */
+#define ISP4SD_META_BUF_SIZE ALIGN(sizeof(struct isp4fw_meta_info), 0x8000)
+
+#define to_isp4_subdev(v4l2_sdev) \
+ container_of(v4l2_sdev, struct isp4_subdev, sdev)
+
+static const char *isp4sd_entity_name = "amd isp4";
+
+static void isp4sd_module_enable(struct isp4_subdev *isp_subdev, bool enable)
+{
+ if (isp_subdev->enable_gpio) {
+ gpiod_set_value(isp_subdev->enable_gpio, enable ? 1 : 0);
+ dev_dbg(isp_subdev->dev, "%s isp_subdev module\n",
+ enable ? "enable" : "disable");
+ }
+}
+
+static int isp4sd_setup_fw_mem_pool(struct isp4_subdev *isp_subdev)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4fw_cmd_send_buffer buf_type = {};
+ struct device *dev = isp_subdev->dev;
+ int ret;
+
+ if (!ispif->fw_mem_pool) {
+ dev_err(dev, "fail to alloc mem pool\n");
+ return -ENOMEM;
+ }
+
+ buf_type.buffer_type = BUFFER_TYPE_MEM_POOL;
+ buf_type.buffer.buf_tags = 0;
+ buf_type.buffer.vmid_space.bit.vmid = 0;
+ buf_type.buffer.vmid_space.bit.space = ADDR_SPACE_TYPE_GPU_VA;
+ isp4if_split_addr64(ispif->fw_mem_pool->gpu_mc_addr,
+ &buf_type.buffer.buf_base_a_lo,
+ &buf_type.buffer.buf_base_a_hi);
+ buf_type.buffer.buf_size_a = (u32)ispif->fw_mem_pool->mem_size;
+
+ ret = isp4if_send_command(ispif, CMD_ID_SEND_BUFFER,
+ &buf_type, sizeof(buf_type));
+ if (ret) {
+ dev_err(dev, "send fw mem pool 0x%llx(%u) fail %d\n",
+ ispif->fw_mem_pool->gpu_mc_addr,
+ buf_type.buffer.buf_size_a,
+ ret);
+ return ret;
+ }
+
+ dev_dbg(dev, "send fw mem pool 0x%llx(%u) suc\n",
+ ispif->fw_mem_pool->gpu_mc_addr,
+ buf_type.buffer.buf_size_a);
+
+ return 0;
+};
+
+static int isp4sd_set_stream_path(struct isp4_subdev *isp_subdev)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4fw_cmd_set_stream_cfg cmd = {};
+ struct device *dev = isp_subdev->dev;
+
+ cmd.stream_cfg.mipi_pipe_path_cfg.isp4fw_sensor_id = SENSOR_ID_ON_MIPI0;
+ cmd.stream_cfg.mipi_pipe_path_cfg.b_enable = true;
+ cmd.stream_cfg.isp_pipe_path_cfg.isp_pipe_id = MIPI0_ISP_PIPELINE_ID;
+
+ cmd.stream_cfg.b_enable_tnr = true;
+ dev_dbg(dev, "isp4fw_sensor_id %d, pipeId 0x%x EnableTnr %u\n",
+ cmd.stream_cfg.mipi_pipe_path_cfg.isp4fw_sensor_id,
+ cmd.stream_cfg.isp_pipe_path_cfg.isp_pipe_id,
+ cmd.stream_cfg.b_enable_tnr);
+
+ return isp4if_send_command(ispif, CMD_ID_SET_STREAM_CONFIG,
+ &cmd, sizeof(cmd));
+}
+
+static int isp4sd_send_meta_buf(struct isp4_subdev *isp_subdev)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4fw_cmd_send_buffer buf_type = {};
+ struct isp4sd_sensor_info *sensor_info;
+ struct device *dev = isp_subdev->dev;
+ u32 i;
+
+ sensor_info = &isp_subdev->sensor_info;
+ for (i = 0; i < ISP4IF_MAX_STREAM_BUF_COUNT; i++) {
+ int ret;
+
+ if (!sensor_info->meta_info_buf[i]) {
+ dev_err(dev, "fail for no meta info buf(%u)\n", i);
+ return -ENOMEM;
+ }
+ buf_type.buffer_type = BUFFER_TYPE_META_INFO;
+ buf_type.buffer.buf_tags = 0;
+ buf_type.buffer.vmid_space.bit.vmid = 0;
+ buf_type.buffer.vmid_space.bit.space = ADDR_SPACE_TYPE_GPU_VA;
+ isp4if_split_addr64(sensor_info->meta_info_buf[i]->gpu_mc_addr,
+ &buf_type.buffer.buf_base_a_lo,
+ &buf_type.buffer.buf_base_a_hi);
+ buf_type.buffer.buf_size_a =
+ (u32)sensor_info->meta_info_buf[i]->mem_size;
+ ret = isp4if_send_command(ispif, CMD_ID_SEND_BUFFER,
+ &buf_type,
+ sizeof(buf_type));
+ if (ret) {
+ dev_err(dev, "send meta info(%u) fail\n", i);
+ return ret;
+ }
+ }
+
+ dev_dbg(dev, "send meta info suc\n");
+ return 0;
+}
+
+static bool isp4sd_get_str_out_prop(struct isp4_subdev *isp_subdev,
+ struct isp4fw_image_prop *out_prop,
+ struct v4l2_subdev_state *state, u32 pad)
+{
+ struct v4l2_mbus_framefmt *format = NULL;
+ struct device *dev = isp_subdev->dev;
+ bool ret;
+
+ format = v4l2_subdev_state_get_format(state, pad, 0);
+ if (!format) {
+ dev_err(dev, "fail get subdev state format\n");
+ return false;
+ }
+
+ switch (format->code) {
+ case MEDIA_BUS_FMT_YUYV8_1_5X8:
+ out_prop->image_format = IMAGE_FORMAT_NV12;
+ out_prop->width = format->width;
+ out_prop->height = format->height;
+ out_prop->luma_pitch = format->width;
+ out_prop->chroma_pitch = out_prop->width;
+ ret = true;
+ break;
+ case MEDIA_BUS_FMT_YUYV8_1X16:
+ out_prop->image_format = IMAGE_FORMAT_YUV422INTERLEAVED;
+ out_prop->width = format->width;
+ out_prop->height = format->height;
+ out_prop->luma_pitch = format->width * 2;
+ out_prop->chroma_pitch = 0;
+ ret = true;
+ break;
+ default:
+ dev_err(dev, "fail for bad image format:0x%x\n",
+ format->code);
+ ret = false;
+ break;
+ }
+
+ if (!out_prop->width || !out_prop->height)
+ ret = false;
+ return ret;
+}
+
+static int isp4sd_kickoff_stream(struct isp4_subdev *isp_subdev, u32 w, u32 h)
+{
+ struct isp4sd_sensor_info *sensor_info = &isp_subdev->sensor_info;
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+
+ if (sensor_info->status == ISP4SD_START_STATUS_STARTED) {
+ return 0;
+ } else if (sensor_info->status == ISP4SD_START_STATUS_START_FAIL) {
+ dev_err(dev, "fail for previous start fail\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(dev, "w:%u,h:%u\n", w, h);
+
+ sensor_info->status = ISP4SD_START_STATUS_START_FAIL;
+
+ if (isp4sd_send_meta_buf(isp_subdev)) {
+ dev_err(dev, "fail to send meta buf\n");
+ return -EINVAL;
+ };
+
+ sensor_info->status = ISP4SD_START_STATUS_NOT_START;
+
+ if (!sensor_info->start_stream_cmd_sent &&
+ sensor_info->buf_sent_cnt >=
+ ISP4SD_MIN_BUF_CNT_BEF_START_STREAM) {
+ int ret = isp4if_send_command(ispif, CMD_ID_START_STREAM,
+ NULL, 0);
+ if (ret) {
+ dev_err(dev, "fail to start stream\n");
+ return ret;
+ }
+
+ sensor_info->start_stream_cmd_sent = true;
+ } else {
+ dev_dbg(dev,
+ "no send START_STREAM, start_sent %u, buf_sent %u\n",
+ sensor_info->start_stream_cmd_sent,
+ sensor_info->buf_sent_cnt);
+ }
+
+ return 0;
+}
+
+static int isp4sd_setup_output(struct isp4_subdev *isp_subdev,
+ struct v4l2_subdev_state *state, u32 pad)
+{
+ struct isp4sd_sensor_info *sensor_info = &isp_subdev->sensor_info;
+ struct isp4sd_output_info *output_info =
+ &isp_subdev->sensor_info.output_info;
+ struct isp4fw_cmd_set_out_ch_prop cmd_ch_prop = {};
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4fw_cmd_enable_out_ch cmd_ch_en = {};
+ struct device *dev = isp_subdev->dev;
+ struct isp4fw_image_prop *out_prop;
+ int ret;
+
+ if (output_info->start_status == ISP4SD_START_STATUS_STARTED)
+ return 0;
+
+ if (output_info->start_status == ISP4SD_START_STATUS_START_FAIL) {
+ dev_err(dev, "fail for previous start fail\n");
+ return -EINVAL;
+ }
+
+ out_prop = &cmd_ch_prop.image_prop;
+ cmd_ch_prop.ch = ISP_PIPE_OUT_CH_PREVIEW;
+ cmd_ch_en.ch = ISP_PIPE_OUT_CH_PREVIEW;
+ cmd_ch_en.is_enable = true;
+
+ if (!isp4sd_get_str_out_prop(isp_subdev, out_prop, state, pad)) {
+ dev_err(dev, "fail to get out prop\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(dev, "channel: w:h=%u:%u,lp:%u,cp%u\n",
+ cmd_ch_prop.image_prop.width, cmd_ch_prop.image_prop.height,
+ cmd_ch_prop.image_prop.luma_pitch,
+ cmd_ch_prop.image_prop.chroma_pitch);
+
+ ret = isp4if_send_command(ispif, CMD_ID_SET_OUT_CHAN_PROP,
+ &cmd_ch_prop,
+ sizeof(cmd_ch_prop));
+ if (ret) {
+ output_info->start_status = ISP4SD_START_STATUS_START_FAIL;
+ dev_err(dev, "fail to set out prop\n");
+ return ret;
+ };
+
+ ret = isp4if_send_command(ispif, CMD_ID_ENABLE_OUT_CHAN,
+ &cmd_ch_en, sizeof(cmd_ch_en));
+
+ if (ret) {
+ output_info->start_status = ISP4SD_START_STATUS_START_FAIL;
+ dev_err(dev, "fail to enable channel\n");
+ return ret;
+ }
+
+ if (!sensor_info->start_stream_cmd_sent) {
+ ret = isp4sd_kickoff_stream(isp_subdev, out_prop->width,
+ out_prop->height);
+ if (ret) {
+ dev_err(dev, "kickoff stream fail %d\n", ret);
+ return ret;
+ }
+ /*
+ * sensor_info->start_stream_cmd_sent will be set to true
+ * 1. in isp4sd_kickoff_stream, if app first send buffer then
+ * start stream
+ * 2. in isp_set_stream_buf, if app first start stream, then
+ * send buffer
+ * because ISP FW has the requirement, host needs to send buffer
+ * before send start stream cmd
+ */
+ if (sensor_info->start_stream_cmd_sent) {
+ sensor_info->status = ISP4SD_START_STATUS_STARTED;
+ output_info->start_status = ISP4SD_START_STATUS_STARTED;
+ dev_dbg(dev, "kickoff stream suc,start cmd sent\n");
+ }
+ } else {
+ dev_dbg(dev, "stream running, no need kickoff\n");
+ output_info->start_status = ISP4SD_START_STATUS_STARTED;
+ }
+
+ dev_dbg(dev, "setup output suc\n");
+ return 0;
+}
+
+static int isp4sd_init_meta_buf(struct isp4_subdev *isp_subdev)
+{
+ struct isp4sd_sensor_info *sensor_info = &isp_subdev->sensor_info;
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+ u32 i;
+
+ for (i = 0; i < ISP4IF_MAX_STREAM_BUF_COUNT; i++) {
+ if (!sensor_info->meta_info_buf[i]) {
+ sensor_info->meta_info_buf[i] = ispif->metainfo_buf_pool[i];
+ if (!sensor_info->meta_info_buf[i]) {
+ dev_err(dev, "invalid %u meta_info_buf fail\n", i);
+ return -ENOMEM;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int isp4sd_init_stream(struct isp4_subdev *isp_subdev)
+{
+ struct device *dev = isp_subdev->dev;
+ int ret;
+
+ ret = isp4sd_setup_fw_mem_pool(isp_subdev);
+ if (ret) {
+ dev_err(dev, "fail to setup fw mem pool\n");
+ return ret;
+ }
+
+ ret = isp4sd_init_meta_buf(isp_subdev);
+ if (ret) {
+ dev_err(dev, "fail to alloc fw driver shared buf\n");
+ return ret;
+ }
+
+ ret = isp4sd_set_stream_path(isp_subdev);
+ if (ret) {
+ dev_err(dev, "fail to setup stream path\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void isp4sd_reset_stream_info(struct isp4_subdev *isp_subdev,
+ struct v4l2_subdev_state *state, u32 pad)
+{
+ struct isp4sd_sensor_info *sensor_info = &isp_subdev->sensor_info;
+ struct v4l2_mbus_framefmt *format = NULL;
+ struct isp4sd_output_info *str_info;
+ int i;
+
+ format = v4l2_subdev_state_get_format(state, pad, 0);
+
+ if (!format) {
+ dev_err(isp_subdev->dev, "fail to setup stream path\n");
+ } else {
+ memset(format, 0, sizeof(*format));
+ format->code = MEDIA_BUS_FMT_YUYV8_1_5X8;
+ }
+
+ for (i = 0; i < ISP4IF_MAX_STREAM_BUF_COUNT; i++)
+ sensor_info->meta_info_buf[i] = NULL;
+
+ str_info = &sensor_info->output_info;
+ str_info->start_status = ISP4SD_START_STATUS_NOT_START;
+}
+
+static bool isp4sd_is_stream_running(struct isp4_subdev *isp_subdev)
+{
+ struct isp4sd_sensor_info *sif;
+ enum isp4sd_start_status stat;
+
+ sif = &isp_subdev->sensor_info;
+ stat = sif->output_info.start_status;
+ if (stat == ISP4SD_START_STATUS_STARTED)
+ return true;
+
+ return false;
+}
+
+static void isp4sd_reset_camera_info(struct isp4_subdev *isp_subdev,
+ struct v4l2_subdev_state *state, u32 pad)
+{
+ struct isp4sd_sensor_info *info = &isp_subdev->sensor_info;
+
+ info->status = ISP4SD_START_STATUS_NOT_START;
+ isp4sd_reset_stream_info(isp_subdev, state, pad);
+
+ info->start_stream_cmd_sent = false;
+}
+
+static int isp4sd_uninit_stream(struct isp4_subdev *isp_subdev,
+ struct v4l2_subdev_state *state, u32 pad)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+ bool running;
+
+ running = isp4sd_is_stream_running(isp_subdev);
+
+ if (running) {
+ dev_dbg(dev, "fail for stream is still running\n");
+ return -EINVAL;
+ }
+
+ isp4sd_reset_camera_info(isp_subdev, state, pad);
+
+ isp4if_clear_cmdq(ispif);
+ return 0;
+}
+
+static void isp4sd_fw_resp_cmd_done(struct isp4_subdev *isp_subdev,
+ enum isp4if_stream_id stream_id,
+ struct isp4fw_resp_cmd_done *para)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4if_cmd_element *ele =
+ isp4if_rm_cmd_from_cmdq(ispif, para->cmd_seq_num, para->cmd_id);
+ struct device *dev = isp_subdev->dev;
+
+ dev_dbg(dev, "stream %d,cmd (0x%08x)(%d),seq %u, ele %p\n",
+ stream_id,
+ para->cmd_id, para->cmd_status, para->cmd_seq_num,
+ ele);
+
+ if (!ele)
+ return;
+
+ if (ele->wq) {
+ dev_dbg(dev, "signal event %p\n", ele->wq);
+ if (ele->wq_cond)
+ *ele->wq_cond = 1;
+ wake_up(ele->wq);
+ }
+
+ kfree(ele);
+}
+
+static struct isp4fw_meta_info *
+isp4sd_get_meta_by_mc(struct isp4_subdev *isp_subdev,
+ u64 mc)
+{
+ u32 i;
+
+ for (i = 0; i < ISP4IF_MAX_STREAM_BUF_COUNT; i++) {
+ struct isp4if_gpu_mem_info *meta_info_buf =
+ isp_subdev->sensor_info.meta_info_buf[i];
+
+ if (meta_info_buf) {
+ if (mc == meta_info_buf->gpu_mc_addr)
+ return meta_info_buf->sys_addr;
+ }
+ }
+ return NULL;
+};
+
+static struct isp4if_img_buf_node *
+isp4sd_preview_done(struct isp4_subdev *isp_subdev,
+ struct isp4fw_meta_info *meta)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4if_img_buf_node *prev = NULL;
+ struct device *dev = isp_subdev->dev;
+
+ if (meta->preview.enabled &&
+ (meta->preview.status == BUFFER_STATUS_SKIPPED ||
+ meta->preview.status == BUFFER_STATUS_DONE ||
+ meta->preview.status == BUFFER_STATUS_DIRTY)) {
+ prev = isp4if_dequeue_buffer(ispif);
+ if (!prev)
+ dev_err(dev, "fail null prev buf\n");
+
+ } else if (meta->preview.enabled) {
+ dev_err(dev, "fail bad preview status %u\n",
+ meta->preview.status);
+ }
+
+ return prev;
+}
+
+static void isp4sd_send_meta_info(struct isp4_subdev *isp_subdev,
+ u64 meta_info_mc)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4fw_cmd_send_buffer buf_type = {};
+ struct device *dev = isp_subdev->dev;
+
+ if (isp_subdev->sensor_info.status != ISP4SD_START_STATUS_STARTED) {
+ dev_warn(dev, "not working status %i, meta_info 0x%llx\n",
+ isp_subdev->sensor_info.status, meta_info_mc);
+ return;
+ }
+
+ if (meta_info_mc) {
+ buf_type.buffer_type = BUFFER_TYPE_META_INFO;
+ buf_type.buffer.buf_tags = 0;
+ buf_type.buffer.vmid_space.bit.vmid = 0;
+ buf_type.buffer.vmid_space.bit.space = ADDR_SPACE_TYPE_GPU_VA;
+ isp4if_split_addr64(meta_info_mc,
+ &buf_type.buffer.buf_base_a_lo,
+ &buf_type.buffer.buf_base_a_hi);
+
+ buf_type.buffer.buf_size_a = ISP4SD_META_BUF_SIZE;
+ if (isp4if_send_command(ispif, CMD_ID_SEND_BUFFER,
+ &buf_type, sizeof(buf_type))) {
+ dev_err(dev, "fail send meta_info 0x%llx\n",
+ meta_info_mc);
+ } else {
+ dev_dbg(dev, "resend meta_info 0x%llx\n", meta_info_mc);
+ }
+ }
+}
+
+static void isp4sd_fw_resp_frame_done(struct isp4_subdev *isp_subdev,
+ enum isp4if_stream_id stream_id,
+ struct isp4fw_resp_param_package *para)
+{
+ struct isp4if_img_buf_node *prev = NULL;
+ struct device *dev = isp_subdev->dev;
+ struct isp4fw_meta_info *meta;
+ u64 mc = 0;
+
+ mc = isp4if_join_addr64(para->package_addr_lo, para->package_addr_hi);
+ meta = isp4sd_get_meta_by_mc(isp_subdev, mc);
+ if (mc == 0 || !meta) {
+ dev_err(dev, "fail to get meta from mc %llx\n", mc);
+ return;
+ }
+
+ dev_dbg(dev, "ts:%llu,streamId:%d,poc:%u,preview_en:%u,(%i)\n",
+ ktime_get_ns(), stream_id, meta->poc,
+ meta->preview.enabled,
+ meta->preview.status);
+
+ prev = isp4sd_preview_done(isp_subdev, meta);
+
+ isp4if_dealloc_buffer_node(prev);
+
+ if (isp_subdev->sensor_info.status == ISP4SD_START_STATUS_STARTED)
+ isp4sd_send_meta_info(isp_subdev, mc);
+
+ dev_dbg(dev, "stream_id:%d, status:%d\n", stream_id,
+ isp_subdev->sensor_info.status);
+}
+
+static void isp4sd_fw_resp_func(struct isp4_subdev *isp_subdev,
+ enum isp4if_stream_id stream_id)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+ struct isp4fw_resp resp;
+
+ if (ispif->status < ISP4IF_STATUS_FW_RUNNING)
+ return;
+
+ while (true) {
+ s32 ret;
+
+ ret = isp4if_f2h_resp(ispif, stream_id, &resp);
+ if (ret)
+ break;
+
+ switch (resp.resp_id) {
+ case RESP_ID_CMD_DONE:
+ isp4sd_fw_resp_cmd_done(isp_subdev, stream_id,
+ &resp.param.cmd_done);
+ break;
+ case RESP_ID_NOTI_FRAME_DONE:
+ isp4sd_fw_resp_frame_done(isp_subdev, stream_id,
+ &resp.param.frame_done);
+ break;
+ default:
+ dev_err(dev, "-><- fail respid (0x%x)\n",
+ resp.resp_id);
+ break;
+ }
+ }
+}
+
+static s32 isp4sd_fw_resp_thread_wrapper(void *context)
+{
+ struct isp4_subdev_thread_param *para = context;
+ struct isp4sd_thread_handler *thread_ctx;
+ enum isp4if_stream_id stream_id;
+
+ struct isp4_subdev *isp_subdev;
+ struct device *dev;
+ u64 timeout;
+
+ if (!para)
+ return -EINVAL;
+
+ isp_subdev = para->isp_subdev;
+ dev = isp_subdev->dev;
+
+ switch (para->idx) {
+ case 0:
+ stream_id = ISP4IF_STREAM_ID_GLOBAL;
+ break;
+ case 1:
+ stream_id = ISP4IF_STREAM_ID_1;
+ break;
+ default:
+ dev_err(dev, "fail invalid %d\n", para->idx);
+ return -EINVAL;
+ }
+
+ thread_ctx = &isp_subdev->fw_resp_thread[para->idx];
+
+ thread_ctx->wq_cond = 0;
+ mutex_init(&thread_ctx->mutex);
+ init_waitqueue_head(&thread_ctx->waitq);
+ timeout = msecs_to_jiffies(ISP4SD_WAIT_RESP_IRQ_TIMEOUT);
+
+ dev_dbg(dev, "[%u] started\n", para->idx);
+
+ while (true) {
+ wait_event_interruptible_timeout(thread_ctx->waitq,
+ thread_ctx->wq_cond != 0,
+ timeout);
+ thread_ctx->wq_cond = 0;
+
+ if (kthread_should_stop()) {
+ dev_dbg(dev, "[%u] quit\n", para->idx);
+ break;
+ }
+
+ guard(mutex)(&thread_ctx->mutex);
+ isp4sd_fw_resp_func(isp_subdev, stream_id);
+ }
+
+ mutex_destroy(&thread_ctx->mutex);
+
+ return 0;
+}
+
+static int isp4sd_start_resp_proc_threads(struct isp4_subdev *isp_subdev)
+{
+ struct device *dev = isp_subdev->dev;
+ int i;
+
+ for (i = 0; i < ISP4SD_MAX_FW_RESP_STREAM_NUM; i++) {
+ struct isp4sd_thread_handler *thread_ctx =
+ &isp_subdev->fw_resp_thread[i];
+
+ isp_subdev->isp_resp_para[i].idx = i;
+ isp_subdev->isp_resp_para[i].isp_subdev = isp_subdev;
+
+ thread_ctx->thread = kthread_run(isp4sd_fw_resp_thread_wrapper,
+ &isp_subdev->isp_resp_para[i],
+ "amd_isp4_thread");
+ if (IS_ERR(thread_ctx->thread)) {
+ dev_err(dev, "create thread [%d] fail\n", i);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int isp4sd_stop_resp_proc_threads(struct isp4_subdev *isp_subdev)
+{
+ int i;
+
+ for (i = 0; i < ISP4SD_MAX_FW_RESP_STREAM_NUM; i++) {
+ struct isp4sd_thread_handler *thread_ctx =
+ &isp_subdev->fw_resp_thread[i];
+
+ if (thread_ctx->thread) {
+ kthread_stop(thread_ctx->thread);
+ thread_ctx->thread = NULL;
+ }
+ }
+
+ return 0;
+}
+
+static u32 isp4sd_get_started_stream_count(struct isp4_subdev *isp_subdev)
+{
+ u32 cnt = 0;
+
+ if (isp_subdev->sensor_info.status == ISP4SD_START_STATUS_STARTED)
+ cnt++;
+ return cnt;
+}
+
+static int isp4sd_pwroff_and_deinit(struct isp4_subdev *isp_subdev)
+{
+ struct isp4sd_sensor_info *sensor_info = &isp_subdev->sensor_info;
+ unsigned int perf_state = ISP4SD_PERFORMANCE_STATE_LOW;
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+
+ struct device *dev = isp_subdev->dev;
+ u32 cnt;
+ int ret;
+
+ mutex_lock(&isp_subdev->ops_mutex);
+
+ if (sensor_info->status == ISP4SD_START_STATUS_STARTED) {
+ dev_err(dev, "fail for stream still running\n");
+ mutex_unlock(&isp_subdev->ops_mutex);
+ return -EINVAL;
+ }
+
+ sensor_info->status = ISP4SD_START_STATUS_NOT_START;
+ cnt = isp4sd_get_started_stream_count(isp_subdev);
+ if (cnt > 0) {
+ dev_dbg(dev, "no need power off isp_subdev\n");
+ mutex_unlock(&isp_subdev->ops_mutex);
+ return 0;
+ }
+
+ isp4if_stop(ispif);
+
+ ret = dev_pm_genpd_set_performance_state(dev, perf_state);
+ if (ret)
+ dev_err(dev,
+ "fail to set isp_subdev performance state %u,ret %d\n",
+ perf_state, ret);
+ isp4sd_stop_resp_proc_threads(isp_subdev);
+ dev_dbg(dev, "isp_subdev stop resp proc streads suc");
+ /* hold ccpu reset */
+ isp4hw_wreg(isp_subdev->mmio, ISP_SOFT_RESET, 0x0);
+ isp4hw_wreg(isp_subdev->mmio, ISP_POWER_STATUS, 0);
+ ret = pm_runtime_put_sync(dev);
+ if (ret)
+ dev_err(dev, "power off isp_subdev fail %d\n", ret);
+ else
+ dev_dbg(dev, "power off isp_subdev suc\n");
+
+ ispif->status = ISP4IF_STATUS_PWR_OFF;
+ isp4if_clear_cmdq(ispif);
+ isp4sd_module_enable(isp_subdev, false);
+
+ msleep(20);
+
+ mutex_unlock(&isp_subdev->ops_mutex);
+
+ return 0;
+}
+
+static int isp4sd_pwron_and_init(struct isp4_subdev *isp_subdev)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+ int ret;
+
+ if (ispif->status == ISP4IF_STATUS_FW_RUNNING) {
+ dev_dbg(dev, "camera already opened, do nothing\n");
+ return 0;
+ }
+
+ mutex_lock(&isp_subdev->ops_mutex);
+
+ isp4sd_module_enable(isp_subdev, true);
+
+ isp_subdev->sensor_info.start_stream_cmd_sent = false;
+ isp_subdev->sensor_info.buf_sent_cnt = 0;
+
+ if (ispif->status < ISP4IF_STATUS_PWR_ON) {
+ unsigned int perf_state = ISP4SD_PERFORMANCE_STATE_HIGH;
+
+ ret = pm_runtime_resume_and_get(dev);
+ if (ret) {
+ dev_err(dev, "fail to power on isp_subdev ret %d\n",
+ ret);
+ goto err_unlock_and_close;
+ }
+
+ /* ISPPG ISP Power Status */
+ isp4hw_wreg(isp_subdev->mmio, ISP_POWER_STATUS, 0x7FF);
+ ret = dev_pm_genpd_set_performance_state(dev, perf_state);
+ if (ret) {
+ dev_err(dev,
+ "fail to set performance state %u, ret %d\n",
+ perf_state, ret);
+ goto err_unlock_and_close;
+ }
+
+ ispif->status = ISP4IF_STATUS_PWR_ON;
+
+ if (isp4sd_start_resp_proc_threads(isp_subdev)) {
+ dev_err(dev, "isp_start_resp_proc_threads fail");
+ goto err_unlock_and_close;
+ } else {
+ dev_dbg(dev, "create resp threads ok");
+ }
+ }
+
+ isp_subdev->sensor_info.start_stream_cmd_sent = false;
+ isp_subdev->sensor_info.buf_sent_cnt = 0;
+
+ ret = isp4if_start(ispif);
+ if (ret) {
+ dev_err(dev, "fail to start isp_subdev interface\n");
+ goto err_unlock_and_close;
+ }
+
+ mutex_unlock(&isp_subdev->ops_mutex);
+ return 0;
+err_unlock_and_close:
+ mutex_unlock(&isp_subdev->ops_mutex);
+ isp4sd_pwroff_and_deinit(isp_subdev);
+ return -EINVAL;
+}
+
+static int isp4sd_stop_stream(struct isp4_subdev *isp_subdev,
+ struct v4l2_subdev_state *state, u32 pad)
+{
+ struct isp4sd_output_info *output_info =
+ &isp_subdev->sensor_info.output_info;
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+ int ret = 0;
+
+ dev_dbg(dev, "status %i\n", output_info->start_status);
+ mutex_lock(&isp_subdev->ops_mutex);
+
+ if (output_info->start_status == ISP4SD_START_STATUS_STARTED) {
+ struct isp4fw_cmd_enable_out_ch cmd_ch_disable;
+
+ cmd_ch_disable.ch = ISP_PIPE_OUT_CH_PREVIEW;
+ cmd_ch_disable.is_enable = false;
+ ret = isp4if_send_command_sync(ispif,
+ CMD_ID_ENABLE_OUT_CHAN,
+ &cmd_ch_disable,
+ sizeof(cmd_ch_disable),
+ ISP4SD_FW_CMD_TIMEOUT_IN_MS);
+ if (ret)
+ dev_err(dev, "fail to disable stream\n");
+ else
+ dev_dbg(dev, "wait disable stream suc\n");
+
+ ret = isp4if_send_command_sync(ispif, CMD_ID_STOP_STREAM,
+ NULL,
+ 0,
+ ISP4SD_FW_CMD_TIMEOUT_IN_MS);
+ if (ret)
+ dev_err(dev, "fail to stop steam\n");
+ else
+ dev_dbg(dev, "wait stop stream suc\n");
+ }
+
+ isp4if_clear_bufq(ispif);
+
+ output_info->start_status = ISP4SD_START_STATUS_NOT_START;
+ isp4sd_reset_stream_info(isp_subdev, state, pad);
+
+ mutex_unlock(&isp_subdev->ops_mutex);
+
+ isp4sd_uninit_stream(isp_subdev, state, pad);
+
+ return ret;
+}
+
+static int isp4sd_start_stream(struct isp4_subdev *isp_subdev,
+ struct v4l2_subdev_state *state, u32 pad)
+{
+ struct isp4sd_output_info *output_info =
+ &isp_subdev->sensor_info.output_info;
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+ int ret;
+
+ mutex_lock(&isp_subdev->ops_mutex);
+
+ if (ispif->status != ISP4IF_STATUS_FW_RUNNING) {
+ mutex_unlock(&isp_subdev->ops_mutex);
+ dev_err(dev, "fail, bad fsm %d", ispif->status);
+ return -EINVAL;
+ }
+
+ ret = isp4sd_init_stream(isp_subdev);
+
+ if (ret) {
+ dev_err(dev, "fail to init isp_subdev stream\n");
+ ret = -EINVAL;
+ goto unlock_and_check_ret;
+ }
+
+ if (output_info->start_status == ISP4SD_START_STATUS_STARTED) {
+ ret = 0;
+ dev_dbg(dev, "stream started, do nothing\n");
+ goto unlock_and_check_ret;
+ } else if (output_info->start_status ==
+ ISP4SD_START_STATUS_START_FAIL) {
+ ret = -EINVAL;
+ dev_err(dev, "stream fail to start before\n");
+ goto unlock_and_check_ret;
+ }
+
+ if (isp4sd_setup_output(isp_subdev, state, pad)) {
+ dev_err(dev, "fail to setup output\n");
+ ret = -EINVAL;
+ } else {
+ ret = 0;
+ dev_dbg(dev, "suc to setup out\n");
+ }
+
+unlock_and_check_ret:
+ mutex_unlock(&isp_subdev->ops_mutex);
+ if (ret) {
+ isp4sd_stop_stream(isp_subdev, state, pad);
+ dev_err(dev, "start stream fail\n");
+ }
+
+ return ret;
+}
+
+static int isp4sd_set_power(struct v4l2_subdev *sd, int on)
+{
+ struct isp4_subdev *ispsd = to_isp4_subdev(sd);
+
+ if (on)
+ return isp4sd_pwron_and_init(ispsd);
+ else
+ return isp4sd_pwroff_and_deinit(ispsd);
+};
+
+static const struct v4l2_subdev_core_ops isp4sd_core_ops = {
+ .s_power = isp4sd_set_power,
+};
+
+static const struct v4l2_subdev_video_ops isp4sd_video_ops = {
+ .s_stream = v4l2_subdev_s_stream_helper,
+};
+
+static int isp4sd_set_pad_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *fmt)
+{
+ struct isp4sd_output_info *steam_info =
+ &(to_isp4_subdev(sd)->sensor_info.output_info);
+ struct v4l2_mbus_framefmt *format;
+
+ format = v4l2_subdev_state_get_format(sd_state, fmt->pad);
+
+ if (!format) {
+ dev_err(sd->dev, "fail to get state format\n");
+ return -EINVAL;
+ }
+
+ *format = fmt->format;
+ switch (format->code) {
+ case MEDIA_BUS_FMT_YUYV8_1_5X8:
+ steam_info->image_size = format->width * format->height * 3 / 2;
+ break;
+ case MEDIA_BUS_FMT_YUYV8_1X16:
+ steam_info->image_size = format->width * format->height * 2;
+ break;
+ default:
+ steam_info->image_size = 0;
+ break;
+ }
+ if (!steam_info->image_size) {
+ dev_err(sd->dev,
+ "fail set pad format,code 0x%x,width %u, height %u\n",
+ format->code, format->width, format->height);
+ return -EINVAL;
+ }
+ dev_dbg(sd->dev,
+ "set pad format suc, code:%x w:%u h:%u size:%u\n", format->code,
+ format->width, format->height, steam_info->image_size);
+
+ return 0;
+}
+
+static int isp4sd_enable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state, u32 pad,
+ u64 streams_mask)
+{
+ struct isp4_subdev *ispsd = to_isp4_subdev(sd);
+
+ return isp4sd_start_stream(ispsd, state, pad);
+}
+
+static int isp4sd_disable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state, u32 pad,
+ u64 streams_mask)
+{
+ struct isp4_subdev *ispsd = to_isp4_subdev(sd);
+
+ return isp4sd_stop_stream(ispsd, state, pad);
+}
+
+static const struct v4l2_subdev_pad_ops isp4sd_pad_ops = {
+ .get_fmt = v4l2_subdev_get_fmt,
+ .set_fmt = isp4sd_set_pad_format,
+ .enable_streams = isp4sd_enable_streams,
+ .disable_streams = isp4sd_disable_streams,
+};
+
+static const struct v4l2_subdev_ops isp4sd_subdev_ops = {
+ .core = &isp4sd_core_ops,
+ .video = &isp4sd_video_ops,
+ .pad = &isp4sd_pad_ops,
+};
+
+static int isp4sd_sdev_link_validate(struct media_link *link)
+{
+ return 0;
+}
+
+static const struct media_entity_operations isp4sd_sdev_ent_ops = {
+ .link_validate = isp4sd_sdev_link_validate,
+};
+
+int isp4sd_init(struct isp4_subdev *isp_subdev,
+ struct v4l2_device *v4l2_dev)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4sd_sensor_info *sensor_info;
+ struct device *dev = v4l2_dev->dev;
+ int ret;
+
+ isp_subdev->dev = dev;
+ v4l2_subdev_init(&isp_subdev->sdev, &isp4sd_subdev_ops);
+ isp_subdev->sdev.owner = THIS_MODULE;
+ isp_subdev->sdev.dev = dev;
+ snprintf(isp_subdev->sdev.name, sizeof(isp_subdev->sdev.name), "%s",
+ dev_name(dev));
+
+ isp_subdev->sdev.entity.name = isp4sd_entity_name;
+ isp_subdev->sdev.entity.function = MEDIA_ENT_F_PROC_VIDEO_ISP;
+ isp_subdev->sdev.entity.ops = &isp4sd_sdev_ent_ops;
+ isp_subdev->sdev_pad.flags = MEDIA_PAD_FL_SOURCE;
+ ret = media_entity_pads_init(&isp_subdev->sdev.entity, 1,
+ &isp_subdev->sdev_pad);
+ if (ret) {
+ dev_err(dev, "fail to init isp4 subdev entity pad %d\n", ret);
+ return ret;
+ }
+ ret = v4l2_subdev_init_finalize(&isp_subdev->sdev);
+ if (ret < 0) {
+ dev_err(dev, "fail to init finalize isp4 subdev %d\n",
+ ret);
+ return ret;
+ }
+ ret = v4l2_device_register_subdev(v4l2_dev, &isp_subdev->sdev);
+ if (ret) {
+ dev_err(dev, "fail to register isp4 subdev to V4L2 device %d\n",
+ ret);
+ goto err_media_clean_up;
+ }
+
+ sensor_info = &isp_subdev->sensor_info;
+
+ isp4if_init(ispif, dev, isp_subdev->mmio);
+
+ mutex_init(&isp_subdev->ops_mutex);
+ sensor_info->start_stream_cmd_sent = false;
+ sensor_info->status = ISP4SD_START_STATUS_NOT_START;
+
+ /* create ISP enable gpio control */
+ isp_subdev->enable_gpio = devm_gpiod_get(isp_subdev->dev,
+ "enable_isp",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(isp_subdev->enable_gpio)) {
+ dev_err(dev, "fail to get gpiod %d\n", ret);
+ media_entity_cleanup(&isp_subdev->sdev.entity);
+ return PTR_ERR(isp_subdev->enable_gpio);
+ }
+
+ isp_subdev->host2fw_seq_num = 1;
+ ispif->status = ISP4IF_STATUS_PWR_OFF;
+
+ if (ret)
+ goto err_media_clean_up;
+ return ret;
+
+err_media_clean_up:
+ media_entity_cleanup(&isp_subdev->sdev.entity);
+ return ret;
+}
+
+void isp4sd_deinit(struct isp4_subdev *isp_subdev)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+
+ media_entity_cleanup(&isp_subdev->sdev.entity);
+ isp4if_deinit(ispif);
+ isp4sd_module_enable(isp_subdev, false);
+
+ ispif->status = ISP4IF_STATUS_PWR_OFF;
+}
diff --git a/drivers/media/platform/amd/isp4/isp4_subdev.h b/drivers/media/platform/amd/isp4/isp4_subdev.h
new file mode 100644
index 000000000000..524a8de5e18d
--- /dev/null
+++ b/drivers/media/platform/amd/isp4/isp4_subdev.h
@@ -0,0 +1,131 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2025 Advanced Micro Devices, Inc.
+ */
+
+#ifndef _ISP4_CONTEXT_H_
+#define _ISP4_CONTEXT_H_
+
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+#include <linux/types.h>
+#include <linux/debugfs.h>
+#include <media/v4l2-device.h>
+
+#include "isp4_fw_cmd_resp.h"
+#include "isp4_hw_reg.h"
+#include "isp4_interface.h"
+
+/*
+ * one is for none sesnor specefic response which is not used now
+ * another is for sensor specific response
+ */
+#define ISP4SD_MAX_FW_RESP_STREAM_NUM 2
+
+/*
+ * cmd used to register frame done callback, parameter is
+ * struct isp4sd_register_framedone_cb_param *
+ * when a image buffer is filled by ISP, ISP will call the registered callback.
+ * callback func prototype is isp4sd_framedone_cb, cb_ctx can be anything
+ * provided by caller which will be provided back as the first parameter of the
+ * callback function.
+ * both cb_func and cb_ctx are provide by caller, set cb_func to NULL to
+ * unregister the callback
+ */
+
+/* used to indicate the ISP status */
+enum isp4sd_status {
+ ISP4SD_STATUS_PWR_OFF,
+ ISP4SD_STATUS_PWR_ON,
+ ISP4SD_STATUS_FW_RUNNING,
+ ISP4SD_STATUS_MAX
+};
+
+/* used to indicate the status of sensor, output stream */
+enum isp4sd_start_status {
+ ISP4SD_START_STATUS_NOT_START,
+ ISP4SD_START_STATUS_STARTED,
+ ISP4SD_START_STATUS_START_FAIL,
+};
+
+struct isp4sd_img_buf_node {
+ struct list_head node;
+ struct isp4if_img_buf_info buf_info;
+};
+
+/* this is isp output after processing bayer raw input from sensor */
+struct isp4sd_output_info {
+ enum isp4sd_start_status start_status;
+ u32 image_size;
+};
+
+/*
+ * This struct represents the sensor info which is input or source of ISP,
+ * meta_info_buf is the buffer store the fw to driver metainfo response
+ * status is the sensor status
+ * output_info is the isp output info after ISP processing the sensor input,
+ * start_stream_cmd_sent mean if CMD_ID_START_STREAM has sent to fw.
+ * buf_sent_cnt is buffer count app has sent to receive the images
+ */
+struct isp4sd_sensor_info {
+ struct isp4if_gpu_mem_info *
+ meta_info_buf[ISP4IF_MAX_STREAM_BUF_COUNT];
+ struct isp4sd_output_info output_info;
+ enum isp4sd_start_status status;
+ bool start_stream_cmd_sent;
+ u32 buf_sent_cnt;
+};
+
+/*
+ * Thread created by driver to receive fw response
+ * thread will be wakeup by fw to driver response interrupt
+ */
+struct isp4sd_thread_handler {
+ struct task_struct *thread;
+ struct mutex mutex; /* mutex */
+ wait_queue_head_t waitq;
+ int wq_cond;
+};
+
+struct isp4_subdev_thread_param {
+ u32 idx;
+ struct isp4_subdev *isp_subdev;
+};
+
+struct isp4_subdev {
+ struct v4l2_subdev sdev;
+ struct isp4_interface ispif;
+
+ struct media_pad sdev_pad;
+
+ enum isp4sd_status isp_status;
+ struct mutex ops_mutex; /* ops_mutex */
+
+ /* Used to store fw cmds sent to FW whose response driver needs to wait for */
+ struct isp4sd_thread_handler
+ fw_resp_thread[ISP4SD_MAX_FW_RESP_STREAM_NUM];
+
+ u32 host2fw_seq_num;
+
+ struct isp4sd_sensor_info sensor_info;
+
+ /* gpio descriptor */
+ struct gpio_desc *enable_gpio;
+ struct device *dev;
+ void __iomem *mmio;
+ struct isp4_subdev_thread_param
+ isp_resp_para[ISP4SD_MAX_FW_RESP_STREAM_NUM];
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *debugfs_dir;
+ bool enable_fw_log;
+ char *fw_log_output;
+#endif
+};
+
+int isp4sd_init(struct isp4_subdev *isp_subdev,
+ struct v4l2_device *v4l2_dev);
+void isp4sd_deinit(struct isp4_subdev *isp_subdev);
+
+#endif
--
2.34.1
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