struct cal_buffer *cur_frm;
/* Pointer pointing to next v4l2_buffer */
struct cal_buffer *next_frm;
+
+ bool dma_act;
};
static const struct cal_fmt *find_format_by_pix(struct cal_ctx *ctx,
static void csi2_ppi_enable(struct cal_ctx *ctx)
{
+ reg_write(ctx->dev, CAL_CSI2_PPI_CTRL(ctx->csi2_port), BIT(3));
reg_write_field(ctx->dev, CAL_CSI2_PPI_CTRL(ctx->csi2_port),
CAL_GEN_ENABLE, CAL_CSI2_PPI_CTRL_IF_EN_MASK);
}
if (isportirqset(irqst2, 1)) {
ctx = dev->ctx[0];
+ spin_lock(&ctx->slock);
+ ctx->dma_act = false;
+
if (ctx->cur_frm != ctx->next_frm)
cal_process_buffer_complete(ctx);
+
+ spin_unlock(&ctx->slock);
}
if (isportirqset(irqst2, 2)) {
ctx = dev->ctx[1];
+ spin_lock(&ctx->slock);
+ ctx->dma_act = false;
+
if (ctx->cur_frm != ctx->next_frm)
cal_process_buffer_complete(ctx);
+
+ spin_unlock(&ctx->slock);
}
}
dma_q = &ctx->vidq;
spin_lock(&ctx->slock);
+ ctx->dma_act = true;
if (!list_empty(&dma_q->active) &&
ctx->cur_frm == ctx->next_frm)
cal_schedule_next_buffer(ctx);
dma_q = &ctx->vidq;
spin_lock(&ctx->slock);
+ ctx->dma_act = true;
if (!list_empty(&dma_q->active) &&
ctx->cur_frm == ctx->next_frm)
cal_schedule_next_buffer(ctx);
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
struct cal_dmaqueue *dma_q = &ctx->vidq;
struct cal_buffer *buf, *tmp;
+ unsigned long timeout;
unsigned long flags;
int ret;
+ bool dma_act;
csi2_ppi_disable(ctx);
+
+ /* wait for stream and dma to finish */
+ dma_act = true;
+ timeout = jiffies + msecs_to_jiffies(500);
+ while (dma_act && time_before(jiffies, timeout)) {
+ msleep(50);
+
+ spin_lock_irqsave(&ctx->slock, flags);
+ dma_act = ctx->dma_act;
+ spin_unlock_irqrestore(&ctx->slock, flags);
+ }
+
+ if (dma_act)
+ ctx_err(ctx, "failed to disable dma cleanly\n");
+
disable_irqs(ctx);
csi2_phy_deinit(ctx);