--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2025 Advanced Micro Devices, Inc.
+ */
+
+#include <linux/pm_domain.h>
+#include <linux/units.h>
+
+#include "isp4.h"
+#include "isp4_fw_cmd_resp.h"
+#include "isp4_interface.h"
+
+#define ISP4SD_MIN_BUF_CNT_BEF_START_STREAM 4
+
+#define ISP4SD_PERFORMANCE_STATE_LOW 0
+#define ISP4SD_PERFORMANCE_STATE_HIGH 1
+
+/* align 32KB */
+#define ISP4SD_META_BUF_SIZE ALIGN(sizeof(struct isp4fw_meta_info), 0x8000)
+
+#define to_isp4_subdev(sd) container_of(sd, struct isp4_subdev, sdev)
+
+static const char *isp4sd_entity_name = "amd isp4";
+
+static const char *isp4sd_thread_name[ISP4SD_MAX_FW_RESP_STREAM_NUM] = {
+ "amd_isp4_thread_global",
+ "amd_isp4_thread_stream1",
+};
+
+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;
+ }
+
+ /*
+ * The struct will be shared with ISP FW, use memset() to guarantee
+ * padding bits are zeroed, since this is not guaranteed on all
+ * compilers.
+ */
+ memset(&buf_type, 0, sizeof(buf_type));
+ buf_type.buffer_type = ISP4FW_BUFFER_TYPE_MEM_POOL;
+ buf_type.buffer.vmid_space.bit.space = ISP4FW_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 = ispif->fw_mem_pool->mem_size;
+
+ ret = isp4if_send_command(ispif, ISP4FW_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;
+
+ /*
+ * The struct will be shared with ISP FW, use memset() to guarantee
+ * padding bits are zeroed, since this is not guaranteed on all
+ * compilers.
+ */
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.stream_cfg.mipi_pipe_path_cfg.isp4fw_sensor_id =
+ ISP4FW_SENSOR_ID_ON_MIPI0;
+ cmd.stream_cfg.mipi_pipe_path_cfg.b_enable = true;
+ cmd.stream_cfg.isp_pipe_path_cfg.isp_pipe_id =
+ ISP4FW_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, ISP4FW_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 device *dev = isp_subdev->dev;
+
+ /*
+ * The struct will be shared with ISP FW, use memset() to guarantee
+ * padding bits are zeroed, since this is not guaranteed on all
+ * compilers.
+ */
+ memset(&buf_type, 0, sizeof(buf_type));
+ for (unsigned int i = 0; i < ISP4IF_MAX_STREAM_BUF_COUNT; i++) {
+ struct isp4if_gpu_mem_info *meta_info_buf =
+ isp_subdev->ispif.meta_info_buf[i];
+ int ret;
+
+ if (!meta_info_buf) {
+ dev_err(dev, "fail for no meta info buf(%u)\n", i);
+ return -ENOMEM;
+ }
+
+ buf_type.buffer_type = ISP4FW_BUFFER_TYPE_META_INFO;
+ buf_type.buffer.vmid_space.bit.space =
+ ISP4FW_ADDR_SPACE_TYPE_GPU_VA;
+ isp4if_split_addr64(meta_info_buf->gpu_mc_addr,
+ &buf_type.buffer.buf_base_a_lo,
+ &buf_type.buffer.buf_base_a_hi);
+ buf_type.buffer.buf_size_a = meta_info_buf->mem_size;
+ ret = isp4if_send_command(ispif, ISP4FW_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 device *dev = isp_subdev->dev;
+ struct v4l2_mbus_framefmt *format;
+
+ 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 = ISP4FW_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;
+ break;
+ case MEDIA_BUS_FMT_YUYV8_1X16:
+ out_prop->image_format = ISP4FW_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;
+ break;
+ default:
+ dev_err(dev, "fail for bad image format:0x%x\n",
+ format->code);
+ return false;
+ }
+
+ if (!out_prop->width || !out_prop->height)
+ return false;
+
+ return true;
+}
+
+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;
+
+ 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);
+
+ if (isp4sd_send_meta_buf(isp_subdev)) {
+ dev_err(dev, "fail to send meta buf\n");
+ sensor_info->status = ISP4SD_START_STATUS_START_FAIL;
+ return -EINVAL;
+ }
+
+ sensor_info->status = ISP4SD_START_STATUS_OFF;
+
+ 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, ISP4FW_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_output_info *output_info =
+ &isp_subdev->sensor_info.output_info;
+ struct isp4sd_sensor_info *sensor_info = &isp_subdev->sensor_info;
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4fw_cmd_set_out_ch_prop cmd_ch_prop;
+ struct isp4fw_cmd_enable_out_ch cmd_ch_en;
+ struct device *dev = isp_subdev->dev;
+ 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;
+ }
+
+ /*
+ * The struct will be shared with ISP FW, use memset() to guarantee
+ * padding bits are zeroed, since this is not guaranteed on all
+ * compilers.
+ */
+ memset(&cmd_ch_prop, 0, sizeof(cmd_ch_prop));
+ cmd_ch_prop.ch = ISP4FW_ISP_PIPE_OUT_CH_PREVIEW;
+
+ if (!isp4sd_get_str_out_prop(isp_subdev,
+ &cmd_ch_prop.image_prop, state, pad)) {
+ dev_err(dev, "fail to get out prop\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(dev, "channel:%d,fmt %d,w:h=%u:%u,lp:%u,cp%u\n",
+ cmd_ch_prop.ch,
+ cmd_ch_prop.image_prop.image_format,
+ 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, ISP4FW_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;
+ }
+
+ /*
+ * The struct will be shared with ISP FW, use memset() to guarantee
+ * padding bits are zeroed, since this is not guaranteed on all
+ * compilers.
+ */
+ memset(&cmd_ch_en, 0, sizeof(cmd_ch_en));
+ cmd_ch_en.ch = ISP4FW_ISP_PIPE_OUT_CH_PREVIEW;
+ cmd_ch_en.is_enable = true;
+ ret = isp4if_send_command(ispif, ISP4FW_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;
+ }
+
+ dev_dbg(dev, "enable channel %d\n", cmd_ch_en.ch);
+
+ if (!sensor_info->start_stream_cmd_sent) {
+ ret = isp4sd_kickoff_stream(isp_subdev,
+ cmd_ch_prop.image_prop.width,
+ cmd_ch_prop.image_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_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_set_stream_path(isp_subdev);
+ if (ret) {
+ dev_err(dev, "fail to setup stream path\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void isp4sd_uninit_stream(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 = &sensor_info->output_info;
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct v4l2_mbus_framefmt *format;
+
+ format = v4l2_subdev_state_get_format(state, pad, 0);
+ if (!format) {
+ dev_err(isp_subdev->dev, "fail to get v4l2 format\n");
+ } else {
+ memset(format, 0, sizeof(*format));
+ format->code = MEDIA_BUS_FMT_YUYV8_1_5X8;
+ }
+
+ isp4if_clear_bufq(ispif);
+ isp4if_clear_cmdq(ispif);
+
+ sensor_info->start_stream_cmd_sent = false;
+ sensor_info->buf_sent_cnt = 0;
+
+ sensor_info->status = ISP4SD_START_STATUS_OFF;
+ output_info->start_status = ISP4SD_START_STATUS_OFF;
+}
+
+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) {
+ complete(&ele->cmd_done);
+ if (atomic_dec_and_test(&ele->refcnt))
+ kfree(ele);
+ }
+}
+
+static struct isp4fw_meta_info *
+isp4sd_get_meta_by_mc(struct isp4_subdev *isp_subdev, u64 mc)
+{
+ for (unsigned int i = 0; i < ISP4IF_MAX_STREAM_BUF_COUNT; i++) {
+ struct isp4if_gpu_mem_info *meta_info_buf =
+ isp_subdev->ispif.meta_info_buf[i];
+
+ if (meta_info_buf->gpu_mc_addr == mc)
+ return meta_info_buf->sys_addr;
+ }
+
+ return NULL;
+}
+
+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;
+ }
+
+ /*
+ * The struct will be shared with ISP FW, use memset() to guarantee
+ * padding bits are zeroed, since this is not guaranteed on all
+ * compilers.
+ */
+ memset(&buf_type, 0, sizeof(buf_type));
+ buf_type.buffer_type = ISP4FW_BUFFER_TYPE_META_INFO;
+ buf_type.buffer.vmid_space.bit.space = ISP4FW_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, ISP4FW_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 isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+ struct isp4if_img_buf_node *prev;
+ struct isp4fw_meta_info *meta;
+ u64 mc;
+
+ mc = isp4if_join_addr64(para->package_addr_lo, para->package_addr_hi);
+ meta = isp4sd_get_meta_by_mc(isp_subdev, mc);
+ if (!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,status:%i\n",
+ ktime_get_ns(), stream_id, meta->poc, meta->preview.enabled,
+ meta->preview.status);
+
+ if (meta->preview.enabled &&
+ (meta->preview.status == ISP4FW_BUFFER_STATUS_SKIPPED ||
+ meta->preview.status == ISP4FW_BUFFER_STATUS_DONE ||
+ meta->preview.status == ISP4FW_BUFFER_STATUS_DIRTY)) {
+ prev = isp4if_dequeue_buffer(ispif);
+ if (prev)
+ isp4if_dealloc_buffer_node(prev);
+ else
+ 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);
+ }
+
+ 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;
+
+ while (true) {
+ if (isp4if_f2h_resp(ispif, stream_id, &resp)) {
+ /* Re-enable the interrupt */
+ isp4_intr_enable(isp_subdev, stream_id, true);
+ /*
+ * Recheck to see if there is a new response.
+ * To ensure that an in-flight interrupt is not lost,
+ * enabling the interrupt must occur _before_ checking
+ * for a new response, hence a memory barrier is needed.
+ * Disable the interrupt again if there was a new
+ * response.
+ */
+ mb();
+ if (likely(isp4if_f2h_resp(ispif, stream_id, &resp)))
+ break;
+
+ isp4_intr_enable(isp_subdev, stream_id, false);
+ }
+
+ switch (resp.resp_id) {
+ case ISP4FW_RESP_ID_CMD_DONE:
+ isp4sd_fw_resp_cmd_done(isp_subdev, stream_id,
+ &resp.param.cmd_done);
+ break;
+ case ISP4FW_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(void *context)
+{
+ struct isp4_subdev_thread_param *para = context;
+ struct isp4_subdev *isp_subdev = para->isp_subdev;
+ struct isp4sd_thread_handler *thread_ctx =
+ &isp_subdev->fw_resp_thread[para->idx];
+ struct device *dev = isp_subdev->dev;
+
+ dev_dbg(dev, "[%u] fw resp thread started\n", para->idx);
+ while (true) {
+ wait_event_interruptible(thread_ctx->waitq,
+ thread_ctx->resp_ready);
+ thread_ctx->resp_ready = false;
+
+ if (kthread_should_stop()) {
+ dev_dbg(dev, "[%u] fw resp thread quit\n", para->idx);
+ break;
+ }
+
+ isp4sd_fw_resp_func(isp_subdev, para->idx);
+ }
+
+ return 0;
+}
+
+static int isp4sd_stop_resp_proc_threads(struct isp4_subdev *isp_subdev)
+{
+ for (unsigned int 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 int isp4sd_start_resp_proc_threads(struct isp4_subdev *isp_subdev)
+{
+ struct device *dev = isp_subdev->dev;
+
+ for (unsigned int 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;
+ init_waitqueue_head(&thread_ctx->waitq);
+ thread_ctx->resp_ready = false;
+
+ thread_ctx->thread = kthread_run(isp4sd_fw_resp_thread,
+ &isp_subdev->isp_resp_para[i],
+ isp4sd_thread_name[i]);
+ if (IS_ERR(thread_ctx->thread)) {
+ dev_err(dev, "create thread [%d] fail\n", i);
+ thread_ctx->thread = NULL;
+ isp4sd_stop_resp_proc_threads(isp_subdev);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+int isp4sd_pwroff_and_deinit(struct v4l2_subdev *sd)
+{
+ struct isp4_subdev *isp_subdev = to_isp4_subdev(sd);
+ 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;
+ int ret;
+
+ guard(mutex)(&isp_subdev->ops_mutex);
+ if (sensor_info->status == ISP4SD_START_STATUS_STARTED) {
+ dev_err(dev, "fail for stream still running\n");
+ return -EINVAL;
+ }
+
+ sensor_info->status = ISP4SD_START_STATUS_OFF;
+
+ if (isp_subdev->irq_enabled) {
+ for (unsigned int i = 0; i < ISP4SD_MAX_FW_RESP_STREAM_NUM; i++)
+ disable_irq(isp_subdev->irq[i]);
+ isp_subdev->irq_enabled = false;
+ }
+
+ isp4sd_stop_resp_proc_threads(isp_subdev);
+ dev_dbg(dev, "isp_subdev stop resp proc threads suc\n");
+
+ 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);
+
+ /* hold ccpu reset */
+ isp4hw_wreg(isp_subdev->mmio, ISP_SOFT_RESET, 0);
+ 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);
+
+ /*
+ * When opening the camera, isp4sd_module_enable(isp_subdev, true) is
+ * called. Hardware requires at least a 20ms delay between disabling
+ * and enabling the module, so a sleep is added to ensure ISP stability
+ * during quick reopen scenarios.
+ */
+ msleep(20);
+
+ return 0;
+}
+
+int isp4sd_pwron_and_init(struct v4l2_subdev *sd)
+{
+ struct isp4_subdev *isp_subdev = to_isp4_subdev(sd);
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+ int ret;
+
+ guard(mutex)(&isp_subdev->ops_mutex);
+ if (ispif->status == ISP4IF_STATUS_FW_RUNNING) {
+ dev_dbg(dev, "camera already opened, do nothing\n");
+ return 0;
+ }
+
+ isp4sd_module_enable(isp_subdev, true);
+
+ 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_deinit;
+ }
+
+ /* 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_deinit;
+ }
+
+ ispif->status = ISP4IF_STATUS_PWR_ON;
+ }
+
+ 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_deinit;
+ }
+
+ if (isp4sd_start_resp_proc_threads(isp_subdev)) {
+ dev_err(dev, "isp_start_resp_proc_threads fail\n");
+ goto err_deinit;
+ }
+
+ dev_dbg(dev, "create resp threads ok\n");
+
+ for (unsigned int i = 0; i < ISP4SD_MAX_FW_RESP_STREAM_NUM; i++)
+ enable_irq(isp_subdev->irq[i]);
+ isp_subdev->irq_enabled = true;
+
+ return 0;
+err_deinit:
+ isp4sd_pwroff_and_deinit(sd);
+ return -EINVAL;
+}
+
+static int isp4sd_stop_stream(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 = &sensor_info->output_info;
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct device *dev = isp_subdev->dev;
+
+ guard(mutex)(&isp_subdev->ops_mutex);
+ dev_dbg(dev, "status %i\n", output_info->start_status);
+
+ if (output_info->start_status == ISP4SD_START_STATUS_STARTED) {
+ struct isp4fw_cmd_enable_out_ch cmd_ch_disable;
+ int ret;
+
+ /*
+ * The struct will be shared with ISP FW, use memset() to
+ * guarantee padding bits are zeroed, since this is not
+ * guaranteed on all compilers.
+ */
+ memset(&cmd_ch_disable, 0, sizeof(cmd_ch_disable));
+ cmd_ch_disable.ch = ISP4FW_ISP_PIPE_OUT_CH_PREVIEW;
+ /* `cmd_ch_disable.is_enable` is already false */
+ ret = isp4if_send_command_sync(ispif,
+ ISP4FW_CMD_ID_ENABLE_OUT_CHAN,
+ &cmd_ch_disable,
+ sizeof(cmd_ch_disable));
+ 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, ISP4FW_CMD_ID_STOP_STREAM,
+ NULL, 0);
+ if (ret)
+ dev_err(dev, "fail to stop stream\n");
+ else
+ dev_dbg(dev, "wait stop stream suc\n");
+ }
+
+ isp4sd_uninit_stream(isp_subdev, state, pad);
+
+ /*
+ * Return success to ensure the stop process proceeds,
+ * and disregard any errors since they are not fatal.
+ */
+ return 0;
+}
+
+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;
+
+ guard(mutex)(&isp_subdev->ops_mutex);
+
+ if (ispif->status != ISP4IF_STATUS_FW_RUNNING) {
+ dev_err(dev, "fail, bad fsm %d\n", ispif->status);
+ return -EINVAL;
+ }
+
+ switch (output_info->start_status) {
+ case ISP4SD_START_STATUS_OFF:
+ break;
+ case ISP4SD_START_STATUS_STARTED:
+ dev_dbg(dev, "stream already started, do nothing\n");
+ return 0;
+ case ISP4SD_START_STATUS_START_FAIL:
+ dev_err(dev, "stream previously failed to start\n");
+ return -EINVAL;
+ }
+
+ ret = isp4sd_init_stream(isp_subdev);
+ if (ret) {
+ dev_err(dev, "fail to init isp_subdev stream\n");
+ goto err_stop_stream;
+ }
+
+ ret = isp4sd_setup_output(isp_subdev, state, pad);
+ if (ret) {
+ dev_err(dev, "fail to setup output\n");
+ goto err_stop_stream;
+ }
+
+ return 0;
+
+err_stop_stream:
+ isp4sd_stop_stream(isp_subdev, state, pad);
+ return ret;
+}
+
+int isp4sd_ioc_send_img_buf(struct v4l2_subdev *sd,
+ struct isp4if_img_buf_info *buf_info)
+{
+ struct isp4_subdev *isp_subdev = to_isp4_subdev(sd);
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ struct isp4if_img_buf_node *buf_node;
+ struct device *dev = isp_subdev->dev;
+ int ret;
+
+ guard(mutex)(&isp_subdev->ops_mutex);
+
+ if (ispif->status != ISP4IF_STATUS_FW_RUNNING) {
+ dev_err(dev, "fail send img buf for bad fsm %d\n",
+ ispif->status);
+ return -EINVAL;
+ }
+
+ buf_node = isp4if_alloc_buffer_node(buf_info);
+ if (!buf_node) {
+ dev_err(dev, "fail alloc sys img buf info node\n");
+ return -ENOMEM;
+ }
+
+ ret = isp4if_queue_buffer(ispif, buf_node);
+ if (ret) {
+ dev_err(dev, "fail to queue image buf, %d\n", ret);
+ goto error_release_buf_node;
+ }
+
+ if (!isp_subdev->sensor_info.start_stream_cmd_sent) {
+ isp_subdev->sensor_info.buf_sent_cnt++;
+
+ if (isp_subdev->sensor_info.buf_sent_cnt >=
+ ISP4SD_MIN_BUF_CNT_BEF_START_STREAM) {
+ ret = isp4if_send_command(ispif,
+ ISP4FW_CMD_ID_START_STREAM,
+ NULL, 0);
+ if (ret) {
+ dev_err(dev, "fail to START_STREAM");
+ goto error_release_buf_node;
+ }
+ isp_subdev->sensor_info.start_stream_cmd_sent = true;
+ isp_subdev->sensor_info.output_info.start_status =
+ ISP4SD_START_STATUS_STARTED;
+ isp_subdev->sensor_info.status =
+ ISP4SD_START_STATUS_STARTED;
+ } else {
+ dev_dbg(dev,
+ "no send start, required %u, buf sent %u\n",
+ ISP4SD_MIN_BUF_CNT_BEF_START_STREAM,
+ isp_subdev->sensor_info.buf_sent_cnt);
+ }
+ }
+
+ return 0;
+
+error_release_buf_node:
+ isp4if_dealloc_buffer_node(buf_node);
+ return ret;
+}
+
+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 *format)
+{
+ struct isp4sd_output_info *stream_info =
+ &(to_isp4_subdev(sd)->sensor_info.output_info);
+ struct v4l2_mbus_framefmt *fmt;
+
+ fmt = v4l2_subdev_state_get_format(sd_state, format->pad);
+
+ if (!fmt) {
+ dev_err(sd->dev, "fail to get state format\n");
+ return -EINVAL;
+ }
+
+ *fmt = format->format;
+ switch (fmt->code) {
+ case MEDIA_BUS_FMT_YUYV8_1X16:
+ stream_info->image_size = fmt->width * fmt->height * 2;
+ break;
+ case MEDIA_BUS_FMT_YUYV8_1_5X8:
+ default:
+ stream_info->image_size = fmt->width * fmt->height * 3 / 2;
+ break;
+ }
+
+ if (!stream_info->image_size) {
+ dev_err(sd->dev,
+ "fail set pad format,code 0x%x,width %u, height %u\n",
+ fmt->code, fmt->width, fmt->height);
+ return -EINVAL;
+ }
+
+ dev_dbg(sd->dev, "set pad format suc, code:%x w:%u h:%u size:%u\n",
+ fmt->code, fmt->width, fmt->height,
+ stream_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 *isp_subdev = to_isp4_subdev(sd);
+
+ return isp4sd_start_stream(isp_subdev, state, pad);
+}
+
+static int isp4sd_disable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state, u32 pad,
+ u64 streams_mask)
+{
+ struct isp4_subdev *isp_subdev = to_isp4_subdev(sd);
+
+ return isp4sd_stop_stream(isp_subdev, 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 = {
+ .video = &isp4sd_video_ops,
+ .pad = &isp4sd_pad_ops,
+};
+
+int isp4sd_init(struct isp4_subdev *isp_subdev, struct v4l2_device *v4l2_dev,
+ int irq[ISP4SD_MAX_FW_RESP_STREAM_NUM])
+{
+ struct isp4sd_sensor_info *sensor_info = &isp_subdev->sensor_info;
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+ 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_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;
+ }
+
+ isp4if_init(ispif, dev, isp_subdev->mmio);
+
+ mutex_init(&isp_subdev->ops_mutex);
+ sensor_info->status = ISP4SD_START_STATUS_OFF;
+
+ /* 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)) {
+ ret = PTR_ERR(isp_subdev->enable_gpio);
+ dev_err(dev, "fail to get gpiod %d\n", ret);
+ goto err_subdev_unreg;
+ }
+
+ for (unsigned int i = 0; i < ISP4SD_MAX_FW_RESP_STREAM_NUM; i++)
+ isp_subdev->irq[i] = irq[i];
+
+ isp_subdev->host2fw_seq_num = 1;
+ ispif->status = ISP4IF_STATUS_PWR_OFF;
+
+ return 0;
+
+err_subdev_unreg:
+ v4l2_device_unregister_subdev(&isp_subdev->sdev);
+err_media_clean_up:
+ v4l2_subdev_cleanup(&isp_subdev->sdev);
+ media_entity_cleanup(&isp_subdev->sdev.entity);
+ return ret;
+}
+
+void isp4sd_deinit(struct isp4_subdev *isp_subdev)
+{
+ struct isp4_interface *ispif = &isp_subdev->ispif;
+
+ v4l2_device_unregister_subdev(&isp_subdev->sdev);
+ media_entity_cleanup(&isp_subdev->sdev.entity);
+ isp4if_deinit(ispif);
+ isp4sd_module_enable(isp_subdev, false);
+
+ ispif->status = ISP4IF_STATUS_PWR_OFF;
+}
projects / thirdparty / linux.git / commitdiff
