diff options
Diffstat (limited to 'linux/drivers/media/dvb/pluto2/pluto2.c')
| -rw-r--r-- | linux/drivers/media/dvb/pluto2/pluto2.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/linux/drivers/media/dvb/pluto2/pluto2.c b/linux/drivers/media/dvb/pluto2/pluto2.c index cb049d1a8..b104e63eb 100644 --- a/linux/drivers/media/dvb/pluto2/pluto2.c +++ b/linux/drivers/media/dvb/pluto2/pluto2.c @@ -149,6 +149,15 @@ static inline void pluto_rw(struct pluto *pluto, u32 reg, u32 mask, u32 bits) writel(val, &pluto->io_mem[reg]); } +static void pluto_write_tscr(struct pluto *pluto, u32 val) +{ + /* set the number of packets */ + val &= ~TSCR_ADEF; + val |= TS_DMA_PACKETS / 2; + + pluto_writereg(pluto, REG_TSCR, val); +} + static void pluto_setsda(void *data, int state) { struct pluto *pluto = data; @@ -213,11 +222,11 @@ static void pluto_reset_ts(struct pluto *pluto, int reenable) if (val & TSCR_RSTN) { val &= ~TSCR_RSTN; - pluto_writereg(pluto, REG_TSCR, val); + pluto_write_tscr(pluto, val); } if (reenable) { val |= TSCR_RSTN; - pluto_writereg(pluto, REG_TSCR, val); + pluto_write_tscr(pluto, val); } } @@ -284,12 +293,20 @@ static void pluto_dma_end(struct pluto *pluto, unsigned int nbpackets) * but no packets have been transfered. * [2] Sometimes (actually very often) NBPACKETS stays at zero * although one packet has been transfered. + * [3] Sometimes (actually rarely), the card gets into an erroneous + * mode where it continuously generates interrupts, claiming it + * has recieved nbpackets>TS_DMA_PACKETS packets, but no packet + * has been transfered. Only a reset seems to solve this */ if ((nbpackets == 0) || (nbpackets > TS_DMA_PACKETS)) { unsigned int i = 0; while (pluto->dma_buf[i] == 0x47) i += 188; nbpackets = i / 188; + if (i == 0) { + pluto_reset_ts(pluto, 1); + dev_printk(KERN_DEBUG, &pluto->pdev->dev, "resetting TS because of invalid packet counter\n"); + } } dvb_dmx_swfilter_packets(&pluto->demux, pluto->dma_buf, nbpackets); @@ -343,7 +360,7 @@ static irqreturn_t pluto_irq(int irq, void *dev_id) } /* ACK the interrupt */ - pluto_writereg(pluto, REG_TSCR, tscr | TSCR_IACK); + pluto_write_tscr(pluto, tscr | TSCR_IACK); return IRQ_HANDLED; } @@ -352,9 +369,6 @@ static void __devinit pluto_enable_irqs(struct pluto *pluto) { u32 val = pluto_readreg(pluto, REG_TSCR); - /* set the number of packets */ - val &= ~TSCR_ADEF; - val |= TS_DMA_PACKETS / 2; /* disable AFUL and LOCK interrupts */ val |= (TSCR_MSKA | TSCR_MSKL); /* enable DMA and OVERFLOW interrupts */ @@ -362,7 +376,7 @@ static void __devinit pluto_enable_irqs(struct pluto *pluto) /* clear pending interrupts */ val |= TSCR_IACK; - pluto_writereg(pluto, REG_TSCR, val); + pluto_write_tscr(pluto, val); } static void pluto_disable_irqs(struct pluto *pluto) @@ -374,7 +388,7 @@ static void pluto_disable_irqs(struct pluto *pluto) /* clear pending interrupts */ val |= TSCR_IACK; - pluto_writereg(pluto, REG_TSCR, val); + pluto_write_tscr(pluto, val); } static int __devinit pluto_hw_init(struct pluto *pluto) |