diff options
Diffstat (limited to 'drivers/media/rc/nuvoton-cir.c')
| -rw-r--r-- | drivers/media/rc/nuvoton-cir.c | 40 |
1 files changed, 14 insertions, 26 deletions
diff --git a/drivers/media/rc/nuvoton-cir.c b/drivers/media/rc/nuvoton-cir.c index 00215f343819..04fedaa75612 100644 --- a/drivers/media/rc/nuvoton-cir.c +++ b/drivers/media/rc/nuvoton-cir.c @@ -769,21 +769,11 @@ static void nvt_process_rx_ir_data(struct nvt_dev *nvt) rawir.pulse ? "pulse" : "space", rawir.duration); ir_raw_event_store_with_filter(nvt->rdev, &rawir); - - /* - * BUF_PULSE_BIT indicates end of IR data, BUF_REPEAT_BYTE - * indicates end of IR signal, but new data incoming. In both - * cases, it means we're ready to call ir_raw_event_handle - */ - if ((sample == BUF_PULSE_BIT) && (i + 1 < nvt->pkts)) { - nvt_dbg("Calling ir_raw_event_handle (signal end)\n"); - ir_raw_event_handle(nvt->rdev); - } } nvt->pkts = 0; - nvt_dbg("Calling ir_raw_event_handle (buffer empty)\n"); + nvt_dbg("Calling ir_raw_event_handle\n"); ir_raw_event_handle(nvt->rdev); nvt_dbg_verbose("%s done", __func__); @@ -801,8 +791,7 @@ static void nvt_handle_rx_fifo_overrun(struct nvt_dev *nvt) /* copy data from hardware rx fifo into driver buffer */ static void nvt_get_rx_ir_data(struct nvt_dev *nvt) { - u8 fifocount, val; - unsigned int b_idx; + u8 fifocount; int i; /* Get count of how many bytes to read from RX FIFO */ @@ -810,21 +799,11 @@ static void nvt_get_rx_ir_data(struct nvt_dev *nvt) nvt_dbg("attempting to fetch %u bytes from hw rx fifo", fifocount); - b_idx = nvt->pkts; - - /* This should never happen, but lets check anyway... */ - if (b_idx + fifocount > RX_BUF_LEN) { - nvt_process_rx_ir_data(nvt); - b_idx = 0; - } - /* Read fifocount bytes from CIR Sample RX FIFO register */ - for (i = 0; i < fifocount; i++) { - val = nvt_cir_reg_read(nvt, CIR_SRXFIFO); - nvt->buf[b_idx + i] = val; - } + for (i = 0; i < fifocount; i++) + nvt->buf[i] = nvt_cir_reg_read(nvt, CIR_SRXFIFO); - nvt->pkts += fifocount; + nvt->pkts = fifocount; nvt_dbg("%s: pkts now %d", __func__, nvt->pkts); nvt_process_rx_ir_data(nvt); @@ -886,6 +865,15 @@ static irqreturn_t nvt_cir_isr(int irq, void *data) status = nvt_cir_reg_read(nvt, CIR_IRSTS); iren = nvt_cir_reg_read(nvt, CIR_IREN); + /* At least NCT6779D creates a spurious interrupt when the + * logical device is being disabled. + */ + if (status == 0xff && iren == 0xff) { + spin_unlock_irqrestore(&nvt->nvt_lock, flags); + nvt_dbg_verbose("Spurious interrupt detected"); + return IRQ_HANDLED; + } + /* IRQ may be shared with CIR WAKE, therefore check for each * status bit whether the related interrupt source is enabled */ |