diff options
Diffstat (limited to 'drivers/mxc/ipu3/ipu_capture.c')
| -rw-r--r-- | drivers/mxc/ipu3/ipu_capture.c | 55 |
1 files changed, 54 insertions, 1 deletions
diff --git a/drivers/mxc/ipu3/ipu_capture.c b/drivers/mxc/ipu3/ipu_capture.c index ff7384530045..ca33f00e5e68 100644 --- a/drivers/mxc/ipu3/ipu_capture.c +++ b/drivers/mxc/ipu3/ipu_capture.c @@ -1,5 +1,5 @@ /* - * Copyright 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2008-2012 Freescale Semiconductor, Inc. All Rights Reserved. */ /* @@ -744,3 +744,56 @@ int _ipu_csi_init(struct ipu_soc *ipu, ipu_channel_t channel, uint32_t csi) err: return retval; } + +/*! + * csi_irq_handler + * + * @param irq interrupt id + * @param dev_id pointer to ipu handler + * + * @return Returns if irq is handled + */ +static irqreturn_t csi_irq_handler(int irq, void *dev_id) +{ + struct ipu_soc *ipu = dev_id; + struct completion *comp = &ipu->csi_comp; + + complete(comp); + return IRQ_HANDLED; +} + +/*! + * _ipu_csi_wait4eof + * + * @param ipu ipu handler + * @param channel IDMAC channel + * + */ +void _ipu_csi_wait4eof(struct ipu_soc *ipu, ipu_channel_t channel) +{ + int ret; + int irq = 0; + + if (channel == CSI_MEM0) + irq = IPU_IRQ_CSI0_OUT_EOF; + else if (channel == CSI_MEM1) + irq = IPU_IRQ_CSI1_OUT_EOF; + else if (channel == CSI_MEM2) + irq = IPU_IRQ_CSI2_OUT_EOF; + else if (channel == CSI_MEM3) + irq = IPU_IRQ_CSI3_OUT_EOF; + else{ + dev_err(ipu->dev, "Not a CSI SMFC channel\n"); + return; + } + + init_completion(&ipu->csi_comp); + ret = ipu_request_irq(ipu, irq, csi_irq_handler, 0, NULL, ipu); + if (ret < 0) { + dev_err(ipu->dev, "CSI irq %d in use\n", irq); + return; + } + ret = wait_for_completion_timeout(&ipu->csi_comp, msecs_to_jiffies(50)); + ipu_free_irq(ipu, irq, ipu); + dev_dbg(ipu->dev, "CSI stop timeout - %d * 10ms\n", 5 - ret); +} |