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author | Maxim Levitsky <maximlevitsky@gmail.com> | 2007-09-27 20:34:25 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-10-10 00:02:59 -0300 |
commit | cb71201f20e43581857043a1f856fb61ce44bdf8 (patch) | |
tree | fc16d5eebc8dbf48d0dcb7b0c0eb35609a5231d7 /drivers/media/video/saa7134/saa7134-core.c | |
parent | f5a1ac64cc444cf19c8817d61a410b70bbb619d9 (diff) | |
download | kernel_samsung_smdk4412-cb71201f20e43581857043a1f856fb61ce44bdf8.zip kernel_samsung_smdk4412-cb71201f20e43581857043a1f856fb61ce44bdf8.tar.gz kernel_samsung_smdk4412-cb71201f20e43581857043a1f856fb61ce44bdf8.tar.bz2 |
V4L/DVB (6271): V4L: Add basic support for suspend/resume for saa7134
This adds support for suspend/resume for core of saa7134
Should fix bug#7220
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/saa7134/saa7134-core.c')
-rw-r--r-- | drivers/media/video/saa7134/saa7134-core.c | 175 |
1 files changed, 144 insertions, 31 deletions
diff --git a/drivers/media/video/saa7134/saa7134-core.c b/drivers/media/video/saa7134/saa7134-core.c index a1d986e..7f5df32 100644 --- a/drivers/media/video/saa7134/saa7134-core.c +++ b/drivers/media/video/saa7134/saa7134-core.c @@ -31,6 +31,7 @@ #include <linux/delay.h> #include <linux/mutex.h> #include <linux/dma-mapping.h> +#include <linux/pm.h> #include "saa7134-reg.h" #include "saa7134.h" @@ -392,6 +393,38 @@ void saa7134_buffer_timeout(unsigned long data) spin_unlock_irqrestore(&dev->slock,flags); } +/* resends a current buffer in queue after resume */ + +int saa7134_buffer_requeue(struct saa7134_dev *dev, + struct saa7134_dmaqueue *q) +{ + struct saa7134_buf *buf , *next; + unsigned long flags; + + spin_lock_irqsave(&dev->slock, flags); + + buf = q->curr; + next = buf; + + dprintk("buffer_requeue\n"); + + if (!buf) { + spin_unlock_irqrestore(&dev->slock, flags); + 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; +} + /* ------------------------------------------------------------------ */ int saa7134_set_dmabits(struct saa7134_dev *dev) @@ -647,6 +680,39 @@ static irqreturn_t saa7134_irq(int irq, void *dev_id) /* ------------------------------------------------------------------ */ /* early init (no i2c, no irq) */ + +static int saa7134_hw_enable1(struct saa7134_dev *dev) +{ + /* RAM FIFO config */ + saa_writel(SAA7134_FIFO_SIZE, 0x08070503); + saa_writel(SAA7134_THRESHOULD, 0x02020202); + + /* enable audio + video processing */ + saa_writel(SAA7134_MAIN_CTRL, + SAA7134_MAIN_CTRL_VPLLE | + SAA7134_MAIN_CTRL_APLLE | + SAA7134_MAIN_CTRL_EXOSC | + SAA7134_MAIN_CTRL_EVFE1 | + SAA7134_MAIN_CTRL_EVFE2 | + SAA7134_MAIN_CTRL_ESFE | + SAA7134_MAIN_CTRL_EBDAC); + + /* + * Initialize OSS _after_ enabling audio clock PLL and audio processing. + * OSS initialization writes to registers via the audio DSP; these + * writes will fail unless the audio clock has been started. At worst, + * audio will not work. + */ + + /* enable peripheral devices */ + saa_writeb(SAA7134_SPECIAL_MODE, 0x01); + + /* set vertical line numbering start (vbi needs this) */ + saa_writeb(SAA7134_SOURCE_TIMING2, 0x20); + + return 0; +} + static int saa7134_hwinit1(struct saa7134_dev *dev) { dprintk("hwinit1\n"); @@ -663,44 +729,16 @@ static int saa7134_hwinit1(struct saa7134_dev *dev) saa7134_ts_init1(dev); saa7134_input_init1(dev); - /* RAM FIFO config */ - saa_writel(SAA7134_FIFO_SIZE, 0x08070503); - saa_writel(SAA7134_THRESHOULD,0x02020202); - - /* enable audio + video processing */ - saa_writel(SAA7134_MAIN_CTRL, - SAA7134_MAIN_CTRL_VPLLE | - SAA7134_MAIN_CTRL_APLLE | - SAA7134_MAIN_CTRL_EXOSC | - SAA7134_MAIN_CTRL_EVFE1 | - SAA7134_MAIN_CTRL_EVFE2 | - SAA7134_MAIN_CTRL_ESFE | - SAA7134_MAIN_CTRL_EBDAC); - - /* - * Initialize OSS _after_ enabling audio clock PLL and audio processing. - * OSS initialization writes to registers via the audio DSP; these - * writes will fail unless the audio clock has been started. At worst, - * audio will not work. - */ - - /* enable peripheral devices */ - saa_writeb(SAA7134_SPECIAL_MODE, 0x01); - - /* set vertical line numbering start (vbi needs this) */ - saa_writeb(SAA7134_SOURCE_TIMING2, 0x20); + saa7134_hw_enable1(dev); return 0; } /* late init (with i2c + irq) */ -static int saa7134_hwinit2(struct saa7134_dev *dev) +static int saa7134_hw_enable2(struct saa7134_dev *dev) { - unsigned int irq2_mask; - dprintk("hwinit2\n"); - saa7134_video_init2(dev); - saa7134_tvaudio_init2(dev); + unsigned int irq2_mask; /* enable IRQ's */ irq2_mask = @@ -726,6 +764,20 @@ static int saa7134_hwinit2(struct saa7134_dev *dev) return 0; } +static int saa7134_hwinit2(struct saa7134_dev *dev) +{ + + dprintk("hwinit2\n"); + + saa7134_video_init2(dev); + saa7134_tvaudio_init2(dev); + + saa7134_hw_enable2(dev); + + return 0; +} + + /* shutdown */ static int saa7134_hwfini(struct saa7134_dev *dev) { @@ -1118,6 +1170,65 @@ static void __devexit saa7134_finidev(struct pci_dev *pci_dev) kfree(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); + + saa_writel(SAA7134_IRQ1, 0); + saa_writel(SAA7134_IRQ2, 0); + + + pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state)); + pci_save_state(pci_dev); + + return 0; +} + +static int saa7134_resume(struct pci_dev *pci_dev) +{ + + struct saa7134_dev *dev = pci_get_drvdata(pci_dev); + + pci_restore_state(pci_dev); + pci_set_power_state(pci_dev, PCI_D0); + + /* Do things that are done in saa7134_initdev , + except of initializing memory structures.*/ + + saa7134_board_init1(dev); + + if (saa7134_boards[dev->board].video_out) + saa7134_videoport_init(dev); + + if (card_has_mpeg(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)*/ + saa7134_buffer_requeue(dev, &dev->video_q); + saa7134_buffer_requeue(dev, &dev->vbi_q); + saa7134_buffer_requeue(dev, &dev->ts_q); + + return 0; +} + /* ----------------------------------------------------------- */ int saa7134_ts_register(struct saa7134_mpeg_ops *ops) @@ -1159,6 +1270,8 @@ static struct pci_driver saa7134_pci_driver = { .id_table = saa7134_pci_tbl, .probe = saa7134_initdev, .remove = __devexit_p(saa7134_finidev), + .suspend = saa7134_suspend, + .resume = saa7134_resume }; static int saa7134_init(void) |