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drivers: video: esp32s3: Add set_signal video api function 

This PR implements the set_signal callback from the video API.
A signal registered on VIDEO_EP_OUT raises once a new image has
been received completely.

Signed-off-by: Armin Kessler <ake@espros.com>
This commit is contained in:
Armin Kessler 2024-09-17 15:02:04 +02:00 committed by Henrik Brix Andersen
parent 0e4561bed2
commit 9564a3b431
1 changed files with 38 additions and 4 deletions
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42
drivers/video/video_esp32_dvp.c
View File

@ -15,6 +15,7 @@
#include <zephyr/drivers/dma/dma_esp32.h>
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/drivers/video.h>
#include <zephyr/drivers/interrupt_controller/intc_esp32.h>
#include <zephyr/kernel.h>
#include <hal/cam_hal.h>
#include <hal/cam_ll.h>
@ -23,6 +24,16 @@
LOG_MODULE_REGISTER(video_esp32_lcd_cam, CONFIG_VIDEO_LOG_LEVEL);
#define VIDEO_ESP32_DMA_BUFFER_MAX_SIZE 4095
#define VIDEO_ESP32_VSYNC_MASK 0x04
#ifdef CONFIG_POLL
#define VIDEO_ESP32_RAISE_OUT_SIG_IF_ENABLED(result) \
if (data->signal_out) { \
k_poll_signal_raise(data->signal_out, result); \
}
#else
#define VIDEO_ESP32_RAISE_OUT_SIG_IF_ENABLED(result)
#endif
enum video_esp32_cam_clk_sel_values {
VIDEO_ESP32_CAM_CLK_SEL_NONE = 0,
@ -57,6 +68,9 @@ struct video_esp32_data {
struct k_fifo fifo_in;
struct k_fifo fifo_out;
struct dma_block_config dma_blocks[CONFIG_DMA_ESP32_MAX_DESCRIPTOR_NUM];
#ifdef CONFIG_POLL
struct k_poll_signal *signal_out;
#endif
};
static int video_esp32_reload_dma(struct video_esp32_data *data)
@ -96,20 +110,24 @@ void video_esp32_dma_rx_done(const struct device *dev, void *user_data, uint32_t
}
if (status != DMA_STATUS_COMPLETE) {
VIDEO_ESP32_RAISE_OUT_SIG_IF_ENABLED(VIDEO_BUF_ERROR)
LOG_ERR("DMA error: %d", status);
return;
}
if (data->active_vbuf == NULL) {
VIDEO_ESP32_RAISE_OUT_SIG_IF_ENABLED(VIDEO_BUF_ERROR)
LOG_ERR("No video buffer available. Enque some buffers first.");
return;
}
k_fifo_put(&data->fifo_out, data->active_vbuf);
VIDEO_ESP32_RAISE_OUT_SIG_IF_ENABLED(VIDEO_BUF_DONE)
data->active_vbuf = k_fifo_get(&data->fifo_in, K_NO_WAIT);
if (data->active_vbuf == NULL) {
LOG_WRN("Frame dropped. No buffer available");
VIDEO_ESP32_RAISE_OUT_SIG_IF_ENABLED(VIDEO_BUF_ERROR)
return;
}
video_esp32_reload_dma(data);
@ -196,7 +214,6 @@ static int video_esp32_stream_start(const struct device *dev)
if (video_stream_start(cfg->source_dev)) {
return -EIO;
}
data->is_streaming = true;
return 0;
@ -326,6 +343,21 @@ static int video_esp32_get_ctrl(const struct device *dev, unsigned int cid, void
return video_get_ctrl(cfg->source_dev, cid, value);
}
#ifdef CONFIG_POLL
int video_esp32_set_signal(const struct device *dev, enum video_endpoint_id ep,
struct k_poll_signal *sig)
{
struct video_esp32_data *data = dev->data;
if (ep != VIDEO_EP_OUT && ep != VIDEO_EP_ALL) {
LOG_ERR("Invalid endpoint id");
return -EINVAL;
}
data->signal_out = sig;
return 0;
}
#endif
static void video_esp32_cam_ctrl_init(const struct device *dev)
{
const struct video_esp32_config *cfg = dev->config;
@ -377,7 +409,9 @@ static const struct video_driver_api esp32_driver_api = {
.flush = NULL,
.set_ctrl = video_esp32_set_ctrl,
.get_ctrl = video_esp32_get_ctrl,
.set_signal = NULL,
#ifdef CONFIG_POLL
.set_signal = video_esp32_set_signal,
#endif
};
PINCTRL_DT_INST_DEFINE(0);
@ -401,8 +435,8 @@ static const struct video_esp32_config esp32_config = {
static struct video_esp32_data esp32_data = {0};
DEVICE_DT_INST_DEFINE(0, video_esp32_init, NULL, &esp32_data, &esp32_config,
POST_KERNEL, CONFIG_VIDEO_INIT_PRIORITY, &esp32_driver_api);
DEVICE_DT_INST_DEFINE(0, video_esp32_init, NULL, &esp32_data, &esp32_config, POST_KERNEL,
CONFIG_VIDEO_INIT_PRIORITY, &esp32_driver_api);
static int video_esp32_cam_init_master_clock(void)
{