diff options
Diffstat (limited to 'drivers/staging/imx-drm/ipu-v3/ipu-common.c')
| -rw-r--r-- | drivers/staging/imx-drm/ipu-v3/ipu-common.c | 41 |
1 files changed, 35 insertions, 6 deletions
diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-common.c b/drivers/staging/imx-drm/ipu-v3/ipu-common.c index 0ea00de2cc9a..a1f7b2001c8a 100644 --- a/drivers/staging/imx-drm/ipu-v3/ipu-common.c +++ b/drivers/staging/imx-drm/ipu-v3/ipu-common.c @@ -697,6 +697,12 @@ int ipu_idmac_enable_channel(struct ipuv3_channel *channel) } EXPORT_SYMBOL_GPL(ipu_idmac_enable_channel); +bool ipu_idmac_channel_busy(struct ipu_soc *ipu, unsigned int chno) +{ + return (ipu_idmac_read(ipu, IDMAC_CHA_BUSY(chno)) & idma_mask(chno)); +} +EXPORT_SYMBOL_GPL(ipu_idmac_channel_busy); + int ipu_idmac_wait_busy(struct ipuv3_channel *channel, int ms) { struct ipu_soc *ipu = channel->ipu; @@ -714,6 +720,22 @@ int ipu_idmac_wait_busy(struct ipuv3_channel *channel, int ms) } EXPORT_SYMBOL_GPL(ipu_idmac_wait_busy); +int ipu_wait_interrupt(struct ipu_soc *ipu, int irq, int ms) +{ + unsigned long timeout; + + timeout = jiffies + msecs_to_jiffies(ms); + ipu_cm_write(ipu, BIT(irq % 32), IPU_INT_STAT(irq / 32)); + while (!(ipu_cm_read(ipu, IPU_INT_STAT(irq / 32) & BIT(irq % 32)))) { + if (time_after(jiffies, timeout)) + return -ETIMEDOUT; + cpu_relax(); + } + + return 0; +} +EXPORT_SYMBOL_GPL(ipu_wait_interrupt); + int ipu_idmac_disable_channel(struct ipuv3_channel *channel) { struct ipu_soc *ipu = channel->ipu; @@ -934,15 +956,22 @@ static void ipu_err_irq_handler(unsigned int irq, struct irq_desc *desc) chained_irq_exit(chip, desc); } -int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel, - enum ipu_channel_irq irq_type) +int ipu_map_irq(struct ipu_soc *ipu, int irq) { - int irq = irq_linear_revmap(ipu->domain, irq_type + channel->num); + int virq; - if (!irq) - irq = irq_create_mapping(ipu->domain, irq_type + channel->num); + virq = irq_linear_revmap(ipu->domain, irq); + if (!virq) + virq = irq_create_mapping(ipu->domain, irq); - return irq; + return virq; +} +EXPORT_SYMBOL_GPL(ipu_map_irq); + +int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel, + enum ipu_channel_irq irq_type) +{ + return ipu_map_irq(ipu, irq_type + channel->num); } EXPORT_SYMBOL_GPL(ipu_idmac_channel_irq); |