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media: imx: imx7-media-csi: Rename phys variables to dma_addr

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All the phys variables and structure fields store a DMA address, not a
physical address. Even if the two are effectively identical on all
platforms where this driver is used due to the lack of IOMMU, rename the
variables to dma_addr to make their usage clearer.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Laurent Pinchart 2022-09-07 00:04:01 +01:00 committed by Mauro Carvalho Chehab
parent 2f79df7260
commit fa282e117b
1 changed files with 18 additions and 18 deletions
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36
drivers/staging/media/imx/imx7-media-csi.c
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@ -199,7 +199,7 @@ to_imx7_csi_vb2_buffer(struct vb2_buffer *vb)
struct imx7_csi_dma_buf {
void *virt;
dma_addr_t phys;
dma_addr_t dma_addr;
unsigned long len;
};
@ -383,13 +383,13 @@ static void imx7_csi_dmareq_rff_disable(struct imx7_csi *csi)
imx7_csi_reg_write(csi, cr3, CSI_CSICR3);
}
static void imx7_csi_update_buf(struct imx7_csi *csi, dma_addr_t phys,
static void imx7_csi_update_buf(struct imx7_csi *csi, dma_addr_t dma_addr,
int buf_num)
{
if (buf_num == 1)
imx7_csi_reg_write(csi, phys, CSI_CSIDMASA_FB2);
imx7_csi_reg_write(csi, dma_addr, CSI_CSIDMASA_FB2);
else
imx7_csi_reg_write(csi, phys, CSI_CSIDMASA_FB1);
imx7_csi_reg_write(csi, dma_addr, CSI_CSIDMASA_FB1);
}
static struct imx7_csi_vb2_buffer *imx7_csi_video_next_buf(struct imx7_csi *csi);
@ -401,19 +401,19 @@ static void imx7_csi_setup_vb2_buf(struct imx7_csi *csi)
int i;
for (i = 0; i < 2; i++) {
dma_addr_t phys;
dma_addr_t dma_addr;
buf = imx7_csi_video_next_buf(csi);
if (buf) {
csi->active_vb2_buf[i] = buf;
vb2_buf = &buf->vbuf.vb2_buf;
phys = vb2_dma_contig_plane_dma_addr(vb2_buf, 0);
dma_addr = vb2_dma_contig_plane_dma_addr(vb2_buf, 0);
} else {
csi->active_vb2_buf[i] = NULL;
phys = csi->underrun_buf.phys;
dma_addr = csi->underrun_buf.dma_addr;
}
imx7_csi_update_buf(csi, phys, i);
imx7_csi_update_buf(csi, dma_addr, i);
}
}
@ -440,10 +440,10 @@ static void imx7_csi_free_dma_buf(struct imx7_csi *csi,
struct imx7_csi_dma_buf *buf)
{
if (buf->virt)
dma_free_coherent(csi->dev, buf->len, buf->virt, buf->phys);
dma_free_coherent(csi->dev, buf->len, buf->virt, buf->dma_addr);
buf->virt = NULL;
buf->phys = 0;
buf->dma_addr = 0;
}
static int imx7_csi_alloc_dma_buf(struct imx7_csi *csi,
@ -452,7 +452,7 @@ static int imx7_csi_alloc_dma_buf(struct imx7_csi *csi,
imx7_csi_free_dma_buf(csi, buf);
buf->len = PAGE_ALIGN(size);
buf->virt = dma_alloc_coherent(csi->dev, buf->len, &buf->phys,
buf->virt = dma_alloc_coherent(csi->dev, buf->len, &buf->dma_addr,
GFP_DMA | GFP_KERNEL);
if (!buf->virt)
return -ENOMEM;
@ -713,7 +713,7 @@ static void imx7_csi_vb2_buf_done(struct imx7_csi *csi)
{
struct imx7_csi_vb2_buffer *done, *next;
struct vb2_buffer *vb;
dma_addr_t phys;
dma_addr_t dma_addr;
done = csi->active_vb2_buf[csi->buf_num];
if (done) {
@ -728,14 +728,14 @@ static void imx7_csi_vb2_buf_done(struct imx7_csi *csi)
/* get next queued buffer */
next = imx7_csi_video_next_buf(csi);
if (next) {
phys = vb2_dma_contig_plane_dma_addr(&next->vbuf.vb2_buf, 0);
dma_addr = vb2_dma_contig_plane_dma_addr(&next->vbuf.vb2_buf, 0);
csi->active_vb2_buf[csi->buf_num] = next;
} else {
phys = csi->underrun_buf.phys;
dma_addr = csi->underrun_buf.dma_addr;
csi->active_vb2_buf[csi->buf_num] = NULL;
}
imx7_csi_update_buf(csi, phys, csi->buf_num);
imx7_csi_update_buf(csi, dma_addr, csi->buf_num);
}
static irqreturn_t imx7_csi_irq_handler(int irq, void *data)
@ -1300,14 +1300,14 @@ static bool imx7_csi_fast_track_buffer(struct imx7_csi *csi,
struct imx7_csi_vb2_buffer *buf)
{
unsigned long flags;
dma_addr_t phys;
dma_addr_t dma_addr;
int buf_num;
u32 isr;
if (!csi->is_streaming)
return false;
phys = vb2_dma_contig_plane_dma_addr(&buf->vbuf.vb2_buf, 0);
dma_addr = vb2_dma_contig_plane_dma_addr(&buf->vbuf.vb2_buf, 0);
/*
* buf_num holds the framebuffer ID of the most recently (*not* the
@ -1346,7 +1346,7 @@ static bool imx7_csi_fast_track_buffer(struct imx7_csi *csi,
return false;
}
imx7_csi_update_buf(csi, phys, buf_num);
imx7_csi_update_buf(csi, dma_addr, buf_num);
isr = imx7_csi_reg_read(csi, CSI_CSISR);
if (isr & (buf_num ? BIT_DMA_TSF_DONE_FB1 : BIT_DMA_TSF_DONE_FB2)) {