[PATCH v5 01/14] media: ti: j721e-csi2rx: Remove word size alignment on frame width
From: Rishikesh Donadkar <hidden>
Date: 2025-08-25 14:26:06
Also in:
linux-media, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest, ti j721e csi2rx driver · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds, Jai Luthra
j721e-csi2rx driver has a limitation of frame width being a multiple word size. However, there is no such limitation imposed by the hardware [1]. Remove this limitation from the driver. Link: https://www.ti.com/lit/pdf/spruj16 Signed-off-by: Rishikesh Donadkar <redacted> --- .../platform/ti/j721e-csi2rx/j721e-csi2rx.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-)
diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
index 3992f8b754b7..b3a27f4c3210 100644
--- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
+++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c@@ -260,9 +260,6 @@ static void ti_csi2rx_fill_fmt(const struct ti_csi2rx_fmt *csi_fmt, MAX_WIDTH_BYTES * 8 / csi_fmt->bpp); pix->height = clamp_t(unsigned int, pix->height, 1, MAX_HEIGHT_LINES); - /* Width should be a multiple of transfer word-size */ - pix->width = rounddown(pix->width, pixels_in_word); - v4l2_fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; pix->pixelformat = csi_fmt->fourcc; pix->bytesperline = pix->width * (csi_fmt->bpp / 8);
@@ -360,23 +357,15 @@ static int ti_csi2rx_enum_framesizes(struct file *file, void *fh, struct v4l2_frmsizeenum *fsize) { const struct ti_csi2rx_fmt *fmt; - unsigned int pixels_in_word; fmt = find_format_by_fourcc(fsize->pixel_format); if (!fmt || fsize->index != 0) return -EINVAL; - /* - * Number of pixels in one PSI-L word. The transfer happens in multiples - * of PSI-L word sizes. - */ - pixels_in_word = PSIL_WORD_SIZE_BYTES * 8 / fmt->bpp; - fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; - fsize->stepwise.min_width = pixels_in_word; - fsize->stepwise.max_width = rounddown(MAX_WIDTH_BYTES * 8 / fmt->bpp, - pixels_in_word); - fsize->stepwise.step_width = pixels_in_word; + fsize->stepwise.min_width = 1; + fsize->stepwise.max_width = MAX_WIDTH_BYTES * 8 / fmt->bpp; + fsize->stepwise.step_width = 1; fsize->stepwise.min_height = 1; fsize->stepwise.max_height = MAX_HEIGHT_LINES; fsize->stepwise.step_height = 1;
--
2.34.1