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etienne-lmsetienne-lms
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drivers: video: stm32: don't mix HAL return value and errno
Clarify HAL return value is of type HAL_StatusTypeDef and not an int in STM32 DCMI and DCMIPP drivers. Signed-off-by: Etienne Carriere <[email protected]>
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2 files changed

+51
-43
lines changed

2 files changed

+51
-43
lines changed

‎drivers/video/video_stm32_dcmi.c‎

Lines changed: 7 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -234,6 +234,7 @@ static int video_stm32_dcmi_set_stream(const struct device *dev, bool enable,
234234
{
235235
struct video_stm32_dcmi_data *data = dev->data;
236236
const struct video_stm32_dcmi_config *config = dev->config;
237+
HAL_StatusTypeDef hal_ret;
237238
int err;
238239

239240
if (!enable) {
@@ -242,8 +243,8 @@ static int video_stm32_dcmi_set_stream(const struct device *dev, bool enable,
242243
return err;
243244
}
244245

245-
err = HAL_DCMI_Stop(&data->hdcmi);
246-
if (err != HAL_OK) {
246+
hal_ret = HAL_DCMI_Stop(&data->hdcmi);
247+
if (hal_ret != HAL_OK) {
247248
LOG_ERR("Failed to stop DCMI");
248249
return -EIO;
249250
}
@@ -265,9 +266,9 @@ static int video_stm32_dcmi_set_stream(const struct device *dev, bool enable,
265266
data->hdcmi.Instance->CR &= ~(DCMI_CR_FCRC_0 | DCMI_CR_FCRC_1);
266267
data->hdcmi.Instance->CR |= STM32_DCMI_GET_CAPTURE_RATE(data->capture_rate);
267268

268-
err = HAL_DCMI_Start_DMA(&data->hdcmi, DCMI_MODE_CONTINUOUS,
269-
(uint32_t)data->vbuf->buffer, data->vbuf->bytesused / 4);
270-
if (err != HAL_OK) {
269+
hal_ret = HAL_DCMI_Start_DMA(&data->hdcmi, DCMI_MODE_CONTINUOUS,
270+
(uint32_t)data->vbuf->buffer, data->vbuf->bytesused / 4);
271+
if (hal_ret != HAL_OK) {
271272
LOG_ERR("Failed to start DCMI DMA");
272273
return -EIO;
273274
}
@@ -546,8 +547,7 @@ static int video_stm32_dcmi_init(const struct device *dev)
546547
config->irq_config(dev);
547548

548549
/* Initialize DCMI peripheral */
549-
err = HAL_DCMI_Init(&data->hdcmi);
550-
if (err != HAL_OK) {
550+
if (HAL_DCMI_Init(&data->hdcmi) != HAL_OK) {
551551
LOG_ERR("DCMI initialization failed.");
552552
return -EIO;
553553
}

‎drivers/video/video_stm32_dcmipp.c‎

Lines changed: 44 additions & 36 deletions
Original file line numberDiff line numberDiff line change
@@ -196,8 +196,8 @@ void HAL_DCMIPP_PIPE_FrameEventCallback(DCMIPP_HandleTypeDef *hdcmipp, uint32_t
196196
struct stm32_dcmipp_data *dcmipp =
197197
CONTAINER_OF(hdcmipp, struct stm32_dcmipp_data, hdcmipp);
198198
struct stm32_dcmipp_pipe_data *pipe = dcmipp->pipe[Pipe];
199+
HAL_StatusTypeDef ret;
199200
uint32_t bytesused;
200-
int ret;
201201

202202
__ASSERT(pipe->active, "Unexpected behavior, active_buf must not be NULL");
203203

@@ -324,7 +324,7 @@ static int stm32_dcmipp_conf_parallel(const struct device *dev,
324324
struct stm32_dcmipp_data *dcmipp = dev->data;
325325
const struct stm32_dcmipp_config *config = dev->config;
326326
DCMIPP_ParallelConfTypeDef parallel_cfg = { 0 };
327-
int ret;
327+
HAL_StatusTypeDef ret;
328328

329329
parallel_cfg.Format = input_fmt->dcmipp_format;
330330
parallel_cfg.SwapCycles = DCMIPP_SWAPCYCLES_DISABLE;
@@ -381,6 +381,7 @@ static int stm32_dcmipp_conf_csi(const struct device *dev, uint32_t dcmipp_csi_b
381381
const struct stm32_dcmipp_config *config = dev->config;
382382
struct stm32_dcmipp_data *dcmipp = dev->data;
383383
DCMIPP_CSI_ConfTypeDef csiconf = { 0 };
384+
HAL_StatusTypeDef hal_ret;
384385
int64_t phy_bitrate;
385386
int err, i;
386387

@@ -411,17 +412,17 @@ static int stm32_dcmipp_conf_csi(const struct device *dev, uint32_t dcmipp_csi_b
411412
}
412413
csiconf.PHYBitrate = stm32_dcmipp_bitrate[i].PHYBitrate;
413414

414-
err = HAL_DCMIPP_CSI_SetConfig(&dcmipp->hdcmipp, &csiconf);
415-
if (err != HAL_OK) {
415+
hal_ret = HAL_DCMIPP_CSI_SetConfig(&dcmipp->hdcmipp, &csiconf);
416+
if (hal_ret != HAL_OK) {
416417
LOG_ERR("Failed to configure DCMIPP CSI");
417418
return -EIO;
418419
}
419420

420421
/* Set Virtual Channel config */
421422
/* TODO - need to be able to use an alternate VC, info coming from the source */
422-
err = HAL_DCMIPP_CSI_SetVCConfig(&dcmipp->hdcmipp, DCMIPP_VIRTUAL_CHANNEL0,
423-
dcmipp_csi_bpp);
424-
if (err != HAL_OK) {
423+
hal_ret = HAL_DCMIPP_CSI_SetVCConfig(&dcmipp->hdcmipp, DCMIPP_VIRTUAL_CHANNEL0,
424+
dcmipp_csi_bpp);
425+
if (hal_ret != HAL_OK) {
425426
LOG_ERR("Failed to set CSI configuration");
426427
return -EIO;
427428
}
@@ -691,7 +692,7 @@ static int stm32_dcmipp_set_crop(struct stm32_dcmipp_pipe_data *pipe)
691692
DCMIPP_CropConfTypeDef crop_cfg;
692693
uint32_t frame_width = dcmipp->source_fmt.width;
693694
uint32_t frame_height = dcmipp->source_fmt.height;
694-
int ret;
695+
HAL_StatusTypeDef ret;
695696

696697
#if defined(STM32_DCMIPP_HAS_PIXEL_PIPES)
697698
if (pipe->id == DCMIPP_PIPE1 || pipe->id == DCMIPP_PIPE2) {
@@ -760,7 +761,7 @@ static int stm32_dcmipp_set_downscale(struct stm32_dcmipp_pipe_data *pipe)
760761
DCMIPP_DownsizeTypeDef downsize_cfg;
761762
struct video_rect *compose = &pipe->compose;
762763
uint32_t hdec = 1, vdec = 1;
763-
int ret;
764+
HAL_StatusTypeDef ret;
764765

765766
if (compose->width == pipe->crop.width && compose->height == pipe->crop.height) {
766767
ret = HAL_DCMIPP_PIPE_DisableDecimation(&dcmipp->hdcmipp, pipe->id);
@@ -871,7 +872,7 @@ static int stm32_dcmipp_set_yuv_conversion(struct stm32_dcmipp_pipe_data *pipe,
871872
{
872873
struct stm32_dcmipp_data *dcmipp = pipe->dcmipp;
873874
const DCMIPP_ColorConversionConfTypeDef *cfg = NULL;
874-
int ret;
875+
HAL_StatusTypeDef ret;
875876

876877
/* No YUV conversion on pipe 2 */
877878
if (pipe->id == DCMIPP_PIPE2) {
@@ -922,7 +923,7 @@ static int stm32_dcmipp_start_pipeline(const struct device *dev,
922923
#if defined(STM32_DCMIPP_HAS_PIXEL_PIPES)
923924
struct video_format *fmt = &pipe->fmt;
924925
#endif
925-
int ret;
926+
HAL_StatusTypeDef ret;
926927

927928
#if defined(STM32_DCMIPP_HAS_PIXEL_PIPES)
928929
if (VIDEO_FMT_IS_PLANAR(fmt)) {
@@ -948,7 +949,7 @@ static int stm32_dcmipp_start_pipeline(const struct device *dev,
948949
#endif
949950
else {
950951
LOG_ERR("Invalid bus_type");
951-
ret = -EINVAL;
952+
ret = HAL_ERROR;
952953
}
953954
} else if (VIDEO_FMT_IS_SEMI_PLANAR(fmt)) {
954955
uint8_t *uv_addr = pipe->next->buffer + VIDEO_FMT_PLANAR_Y_PLANE_SIZE(fmt);
@@ -972,7 +973,7 @@ static int stm32_dcmipp_start_pipeline(const struct device *dev,
972973
#endif
973974
else {
974975
LOG_ERR("Invalid bus_type");
975-
ret = -EINVAL;
976+
ret = HAL_ERROR;
976977
}
977978
} else {
978979
#endif
@@ -991,7 +992,7 @@ static int stm32_dcmipp_start_pipeline(const struct device *dev,
991992
#endif
992993
else {
993994
LOG_ERR("Invalid bus_type");
994-
ret = -EINVAL;
995+
ret = HAL_ERROR;
995996
}
996997
#if defined(STM32_DCMIPP_HAS_PIXEL_PIPES)
997998
}
@@ -1015,6 +1016,7 @@ static int stm32_dcmipp_stream_enable(const struct device *dev)
10151016
DCMIPP_CSI_PIPE_ConfTypeDef csi_pipe_cfg = { 0 };
10161017
#endif
10171018
DCMIPP_PipeConfTypeDef pipe_cfg = { 0 };
1019+
HAL_StatusTypeDef hal_ret;
10181020
int ret;
10191021

10201022
k_mutex_lock(&pipe->lock, K_FOREVER);
@@ -1069,10 +1071,10 @@ static int stm32_dcmipp_stream_enable(const struct device *dev)
10691071
/* Configure the Pipe input */
10701072
csi_pipe_cfg.DataTypeMode = DCMIPP_DTMODE_DTIDA;
10711073
csi_pipe_cfg.DataTypeIDA = input_fmt->dcmipp_csi_dt;
1072-
ret = HAL_DCMIPP_CSI_PIPE_SetConfig(&dcmipp->hdcmipp,
1073-
pipe->id == DCMIPP_PIPE2 ? DCMIPP_PIPE1 : pipe->id,
1074-
&csi_pipe_cfg);
1075-
if (ret != HAL_OK) {
1074+
hal_ret = HAL_DCMIPP_CSI_PIPE_SetConfig(&dcmipp->hdcmipp,
1075+
pipe->id == DCMIPP_PIPE2 ? DCMIPP_PIPE1 : pipe->id,
1076+
&csi_pipe_cfg);
1077+
if (hal_ret != HAL_OK) {
10761078
LOG_ERR("Failed to configure pipe #%d input", pipe->id);
10771079
ret = -EIO;
10781080
goto out;
@@ -1094,8 +1096,8 @@ static int stm32_dcmipp_stream_enable(const struct device *dev)
10941096
pipe_cfg.PixelPackerFormat = mapping->pixels.dcmipp_format;
10951097
}
10961098
#endif
1097-
ret = HAL_DCMIPP_PIPE_SetConfig(&dcmipp->hdcmipp, pipe->id, &pipe_cfg);
1098-
if (ret != HAL_OK) {
1099+
hal_ret = HAL_DCMIPP_PIPE_SetConfig(&dcmipp->hdcmipp, pipe->id, &pipe_cfg);
1100+
if (hal_ret != HAL_OK) {
10991101
LOG_ERR("Failed to configure pipe #%d", pipe->id);
11001102
ret = -EIO;
11011103
goto out;
@@ -1110,9 +1112,9 @@ static int stm32_dcmipp_stream_enable(const struct device *dev)
11101112

11111113
/* Only the PIPE0 has a limiter */
11121114
/* Set Limiter to avoid buffer overflow, in number of 32 bits words */
1113-
ret = HAL_DCMIPP_PIPE_EnableLimitEvent(&dcmipp->hdcmipp, DCMIPP_PIPE0,
1114-
(fmt->pitch * fmt->height) / 4);
1115-
if (ret != HAL_OK) {
1115+
hal_ret = HAL_DCMIPP_PIPE_EnableLimitEvent(&dcmipp->hdcmipp, DCMIPP_PIPE0,
1116+
(fmt->pitch * fmt->height) / 4);
1117+
if (hal_ret != HAL_OK) {
11161118
LOG_ERR("Failed to set limiter");
11171119
ret = -EIO;
11181120
goto out;
@@ -1125,15 +1127,15 @@ static int stm32_dcmipp_stream_enable(const struct device *dev)
11251127

11261128
/* Enable / disable SWAPRB if necessary */
11271129
if (mapping->pixels.swap_uv) {
1128-
ret = HAL_DCMIPP_PIPE_EnableRedBlueSwap(&dcmipp->hdcmipp, pipe->id);
1129-
if (ret != HAL_OK) {
1130+
hal_ret = HAL_DCMIPP_PIPE_EnableRedBlueSwap(&dcmipp->hdcmipp, pipe->id);
1131+
if (hal_ret != HAL_OK) {
11301132
LOG_ERR("Failed to enable Red-Blue swap");
11311133
ret = -EIO;
11321134
goto out;
11331135
}
11341136
} else {
1135-
ret = HAL_DCMIPP_PIPE_DisableRedBlueSwap(&dcmipp->hdcmipp, pipe->id);
1136-
if (ret != HAL_OK) {
1137+
hal_ret = HAL_DCMIPP_PIPE_DisableRedBlueSwap(&dcmipp->hdcmipp, pipe->id);
1138+
if (hal_ret != HAL_OK) {
11371139
LOG_ERR("Failed to disable Red-Blue swap");
11381140
ret = -EIO;
11391141
goto out;
@@ -1142,17 +1144,18 @@ static int stm32_dcmipp_stream_enable(const struct device *dev)
11421144

11431145
if (source_colorspace == VIDEO_COLORSPACE_RAW) {
11441146
/* Enable demosaicing if input format is Bayer */
1145-
ret = HAL_DCMIPP_PIPE_EnableISPRawBayer2RGB(&dcmipp->hdcmipp, DCMIPP_PIPE1);
1146-
if (ret != HAL_OK) {
1147+
hal_ret = HAL_DCMIPP_PIPE_EnableISPRawBayer2RGB(&dcmipp->hdcmipp,
1148+
DCMIPP_PIPE1);
1149+
if (hal_ret != HAL_OK) {
11471150
LOG_ERR("Failed to enable demosaicing");
11481151
ret = -EIO;
11491152
goto out;
11501153
}
11511154
} else {
11521155
/* Disable demosaicing */
1153-
ret = HAL_DCMIPP_PIPE_DisableISPRawBayer2RGB(&dcmipp->hdcmipp,
1154-
DCMIPP_PIPE1);
1155-
if (ret != HAL_OK) {
1156+
hal_ret = HAL_DCMIPP_PIPE_DisableISPRawBayer2RGB(&dcmipp->hdcmipp,
1157+
DCMIPP_PIPE1);
1158+
if (hal_ret != HAL_OK) {
11561159
LOG_ERR("Failed to disable demosaicing");
11571160
ret = -EIO;
11581161
goto out;
@@ -1255,22 +1258,27 @@ static int stm32_dcmipp_stream_disable(const struct device *dev)
12551258
#endif
12561259

12571260
/* Disable the DCMIPP Pipeline */
1261+
ret = 0;
12581262
if (config->bus_type == VIDEO_BUS_TYPE_PARALLEL) {
1259-
ret = HAL_DCMIPP_PIPE_Stop(&dcmipp->hdcmipp, pipe->id);
1263+
if (HAL_DCMIPP_PIPE_Stop(&dcmipp->hdcmipp, pipe->id) != HAL_OK) {
1264+
ret = -EIO;
1265+
}
12601266
}
12611267
#if defined(STM32_DCMIPP_HAS_CSI)
12621268
else if (config->bus_type == VIDEO_BUS_TYPE_CSI2_DPHY) {
1263-
ret = HAL_DCMIPP_CSI_PIPE_Stop(&dcmipp->hdcmipp, pipe->id, DCMIPP_VIRTUAL_CHANNEL0);
1269+
if (HAL_DCMIPP_CSI_PIPE_Stop(&dcmipp->hdcmipp, pipe->id,
1270+
DCMIPP_VIRTUAL_CHANNEL0) != HAL_OK) {
1271+
ret = -EIO;
1272+
}
12641273
}
12651274
#endif
12661275
else {
12671276
LOG_ERR("Invalid bus_type");
12681277
ret = -EIO;
12691278
goto out;
12701279
}
1271-
if (ret != HAL_OK) {
1280+
if (ret < 0) {
12721281
LOG_ERR("Failed to stop the pipeline");
1273-
ret = -EIO;
12741282
goto out;
12751283
}
12761284

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