On Thu, May 15, 2014 at 03:56:41AM +0600, Alexander Bersenev wrote: >This patch adds driver for sunxi IR controller. >It is based on Alexsey Shestacov's work based on the original driver >supplied by Allwinner. >
... >+static irqreturn_t sunxi_ir_irq(int irqno, void *dev_id) >+{ >+ unsigned long status; >+ unsigned char dt; >+ unsigned int cnt, rc; >+ struct sunxi_ir *ir = dev_id; >+ DEFINE_IR_RAW_EVENT(rawir); >+ >+ spin_lock(&ir->ir_lock); >+ >+ status = readl(ir->base + SUNXI_IR_RXSTA_REG); >+ >+ /* clean all pending statuses */ >+ writel(status | REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG); >+ >+ if (status & REG_RXINT_RAI_EN) { >+ /* How many messages in fifo */ >+ rc = (status >> REG_RXSTA_RAC__SHIFT) & REG_RXSTA_RAC__MASK; >+ /* Sanity check */ >+ rc = rc > SUNXI_IR_FIFO_SIZE ? SUNXI_IR_FIFO_SIZE : rc; >+ /* If we have data */ >+ for (cnt = 0; cnt < rc; cnt++) { >+ /* for each bit in fifo */ >+ dt = readb(ir->base + SUNXI_IR_RXFIFO_REG); >+ rawir.pulse = (dt & 0x80) != 0; >+ rawir.duration = (dt & 0x7f) * SUNXI_IR_SAMPLE; Can the hardware actually return a zero duration or should that be dt & 0x7f + 1? (Not familiar with this particular hardware but I know I've seen that behaviour before). >+ ir_raw_event_store_with_filter(ir->rc, &rawir); >+ } >+ } >+ >+ if (status & REG_RXINT_ROI_EN) { >+ ir_raw_event_reset(ir->rc); >+ } else if (status & REG_RXINT_RPEI_EN) { >+ ir_raw_event_set_idle(ir->rc, true); >+ ir_raw_event_handle(ir->rc); >+ } >+ >+ spin_unlock(&ir->ir_lock); >+ >+ return IRQ_HANDLED; >+} .... -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.