From acd827d63a568a2cfa26ae8e6093b098c91c631b Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 8 Oct 2007 12:07:35 -0300 Subject: V4L/DVB (6306): Few clenups for saa7134 resume code *Disable DMA explictly on suspend *Enable DMA on resume, after all buffers were configured *Disable overlay on resume - apps should enable it when X is resumed Signed-off-by: Maxim Levitsky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/saa7134/saa7134-core.c | 38 ++++++++++++++++-------------- 1 file changed, 20 insertions(+), 18 deletions(-) (limited to 'drivers/media/video/saa7134/saa7134-core.c') diff --git a/drivers/media/video/saa7134/saa7134-core.c b/drivers/media/video/saa7134/saa7134-core.c index fae0bfe7939..80f04f252fc 100644 --- a/drivers/media/video/saa7134/saa7134-core.c +++ b/drivers/media/video/saa7134/saa7134-core.c @@ -398,29 +398,23 @@ void saa7134_buffer_timeout(unsigned long data) int saa7134_buffer_requeue(struct saa7134_dev *dev, struct saa7134_dmaqueue *q) { - struct saa7134_buf *buf , *next; - unsigned long flags; + struct saa7134_buf *buf, *next; - spin_lock_irqsave(&dev->slock, flags); + assert_spin_locked(&dev->slock); buf = q->curr; next = buf; - dprintk("buffer_requeue\n"); - if (!buf) { - spin_unlock_irqrestore(&dev->slock, flags); + if (!buf) return 0; - } dprintk("buffer_requeue : resending active buffers \n"); if (!list_empty(&q->queue)) next = list_entry(q->queue.next, struct saa7134_buf, vb.queue); - buf->activate(dev, buf, next); - spin_unlock_irqrestore(&dev->slock, flags); return 0; } @@ -435,6 +429,9 @@ int saa7134_set_dmabits(struct saa7134_dev *dev) assert_spin_locked(&dev->slock); + if (dev->inresume) + return 0; + /* video capture -- dma 0 + video task A */ if (dev->video_q.curr) { task |= 0x01; @@ -1175,13 +1172,15 @@ static void __devexit saa7134_finidev(struct pci_dev *pci_dev) static int saa7134_suspend(struct pci_dev *pci_dev , pm_message_t state) { - /* Disable card's IRQs to prevent it from resuming computer */ - struct saa7134_dev *dev = pci_get_drvdata(pci_dev); + /* disable overlay - apps should enable it explicitly on resume*/ + dev->ovenable = 0; + + /* Disable interrupts, DMA, and rest of the chip*/ saa_writel(SAA7134_IRQ1, 0); saa_writel(SAA7134_IRQ2, 0); - + saa_writel(SAA7134_MAIN_CTRL, 0); pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state)); pci_save_state(pci_dev); @@ -1193,6 +1192,7 @@ static int saa7134_resume(struct pci_dev *pci_dev) { struct saa7134_dev *dev = pci_get_drvdata(pci_dev); + unsigned int flags; pci_restore_state(pci_dev); pci_set_power_state(pci_dev, PCI_D0); @@ -1200,6 +1200,7 @@ static int saa7134_resume(struct pci_dev *pci_dev) /* Do things that are done in saa7134_initdev , except of initializing memory structures.*/ + dev->inresume = 1; saa7134_board_init1(dev); if (saa7134_boards[dev->board].video_out) @@ -1209,25 +1210,26 @@ static int saa7134_resume(struct pci_dev *pci_dev) saa7134_ts_init_hw(dev); saa7134_hw_enable1(dev); - saa7134_set_decoder(dev); - saa7134_i2c_call_clients(dev, VIDIOC_S_STD, &dev->tvnorm->id); - saa7134_board_init2(dev); saa7134_hw_enable2(dev); - dev->force_mute_update = 1; saa7134_tvaudio_setmute(dev); - dev->force_mute_update = 0; saa7134_tvaudio_setvolume(dev, dev->ctl_volume); saa7134_enable_i2s(dev); - /*recapture unfinished buffer(s)*/ + /*resume unfinished buffer(s)*/ + spin_lock_irqsave(&dev->slock, flags); saa7134_buffer_requeue(dev, &dev->video_q); saa7134_buffer_requeue(dev, &dev->vbi_q); saa7134_buffer_requeue(dev, &dev->ts_q); + /* start DMA now*/ + dev->inresume = 0; + saa7134_set_dmabits(dev); + spin_unlock_irqrestore(&dev->slock, flags); + return 0; } -- cgit v1.2.2