From 91fb8357c3e097a46eb6e92d03b284182172ce80 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Wed, 11 Jan 2006 19:41:21 -0200 Subject: V4L/DVB (3344d): Stradis video little cleanup Unused function removed. Used container_of instead of for loop. Some small changes Signed-off-by: Jiri Slaby Signed-off-by: Andrew Morton Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/stradis.c | 170 +++++++++++++++++------------------------- 1 file changed, 68 insertions(+), 102 deletions(-) (limited to 'drivers/media/video/stradis.c') diff --git a/drivers/media/video/stradis.c b/drivers/media/video/stradis.c index ad6646c7da03..48cd30d8eb5a 100644 --- a/drivers/media/video/stradis.c +++ b/drivers/media/video/stradis.c @@ -309,41 +309,6 @@ static u32 debiread(struct saa7146 *saa, u32 config, int addr, int count) return result; } -#if 0 /* unused */ -/* MUST be a multiple of 8 bytes and 8-byte aligned and < 32768 bytes */ -/* data copied into saa->dmadebi buffer, caller must re-enable interrupts */ -static void ibm_block_dram_read(struct saa7146 *saa, int address, int bytes) -{ - int i, j; - u32 *buf; - buf = (u32 *) saa->dmadebi; - if (bytes > 0x7000) - bytes = 0x7000; - saawrite(0, SAA7146_IER); /* disable interrupts */ - for (i=0; i < 10000 && - (debiread(saa, debNormal, IBM_MP2_DRAM_CMD_STAT, 2) - & 0x8000); i++) - saaread(SAA7146_MC2); - if (i == 10000) - printk(KERN_ERR "stradis%d: dram_busy never cleared\n", - saa->nr); - debiwrite(saa, debNormal, IBM_MP2_SRC_ADDR, (address<<16) | - (address>>16), 4); - debiwrite(saa, debNormal, IBM_MP2_BLOCK_SIZE, bytes, 2); - debiwrite(saa, debNormal, IBM_MP2_CMD_STAT, 0x8a10, 2); - for (j = 0; j < bytes/4; j++) { - for (i = 0; i < 10000 && - (!(debiread(saa, debNormal, IBM_MP2_DRAM_CMD_STAT, 2) - & 0x4000)); i++) - saaread(SAA7146_MC2); - if (i == 10000) - printk(KERN_ERR "stradis%d: dram_ready never set\n", - saa->nr); - buf[j] = debiread(saa, debNormal, IBM_MP2_DRAM_DATA, 4); - } -} -#endif /* unused */ - static void do_irq_send_data(struct saa7146 *saa) { int split, audbytes, vidbytes; @@ -1935,21 +1900,11 @@ static ssize_t saa_write(struct file *file, const char __user *buf, static int saa_open(struct inode *inode, struct file *file) { - struct saa7146 *saa = NULL; - unsigned int minor = iminor(inode); - int i; + struct video_device *vdev = video_devdata(file); + struct saa7146 *saa = container_of(vdev, struct saa7146, video_dev); - for (i = 0; i < SAA7146_MAX; i++) { - if (saa7146s[i].video_dev.minor == minor) { - saa = &saa7146s[i]; - } - } - if (saa == NULL) { - return -ENODEV; - } file->private_data = saa; - //saa->video_dev.busy = 0; /* old hack to support multiple open */ saa->user++; if (saa->user > 1) return 0; /* device open already, don't reset */ @@ -1961,7 +1916,7 @@ static int saa_release(struct inode *inode, struct file *file) { struct saa7146 *saa = file->private_data; saa->user--; - //saa->video_dev.busy = 0; /* old hack to support multiple open */ + if (saa->user > 0) /* still someone using device */ return 0; saawrite(0x007f0000, SAA7146_MC1); /* stop all overlay dma */ @@ -1993,8 +1948,8 @@ static struct video_device saa_template = static int __devinit configure_saa7146(struct pci_dev *pdev, int num) { - int result; - struct saa7146 *saa = &saa7146s[num]; + int retval; + struct saa7146 *saa = pci_get_drvdata(pdev); saa->endmarkhead = saa->endmarktail = 0; saa->win.x = saa->win.y = 0; @@ -2030,8 +1985,11 @@ static int __devinit configure_saa7146(struct pci_dev *pdev, int num) init_waitqueue_head(&saa->vidq); spin_lock_init(&saa->lock); - if (pci_enable_device(pdev)) - return -EIO; + retval = pci_enable_device(pdev); + if (retval) { + dev_err(&pdev->dev, "%d: pci_enable_device failed!\n", num); + goto err; + } saa->id = pdev->device; saa->irq = pdev->irq; @@ -2040,33 +1998,44 @@ static int __devinit configure_saa7146(struct pci_dev *pdev, int num) pci_read_config_byte(pdev, PCI_CLASS_REVISION, &saa->revision); saa->saa7146_mem = ioremap(saa->saa7146_adr, 0x200); - if (!saa->saa7146_mem) - return -EIO; + if (saa->saa7146_mem == NULL) { + dev_err(&pdev->dev, "%d: ioremap failed!\n", num); + retval = -EIO; + goto err; + } memcpy(&saa->video_dev, &saa_template, sizeof(saa_template)); saawrite(0, SAA7146_IER); /* turn off all interrupts */ - result = request_irq(saa->irq, saa7146_irq, - SA_SHIRQ | SA_INTERRUPT, "stradis", (void *) saa); - if (result == -EINVAL) + + retval = request_irq(saa->irq, saa7146_irq, SA_SHIRQ | SA_INTERRUPT, + "stradis", saa); + if (retval == -EINVAL) dev_err(&pdev->dev, "%d: Bad irq number or handler\n", num); - if (result == -EBUSY) + else if (retval == -EBUSY) dev_err(&pdev->dev, "%d: IRQ %ld busy, change your PnP config " "in BIOS\n", num, saa->irq); - if (result < 0) { - iounmap(saa->saa7146_mem); - return result; - } + if (retval < 0) + goto errio; + pci_set_master(pdev); - if (video_register_device(&saa->video_dev, VFL_TYPE_GRABBER, video_nr) < 0) { - iounmap(saa->saa7146_mem); - return -1; + retval = video_register_device(&saa->video_dev, VFL_TYPE_GRABBER, + video_nr); + if (retval < 0) { + dev_err(&pdev->dev, "%d: error in registering video device!\n", + num); + goto errio; } + return 0; +errio: + iounmap(saa->saa7146_mem); +err: + return retval; } -static int __devinit init_saa7146(int i, struct device *dev) +static int __devinit init_saa7146(struct pci_dev *pdev) { - struct saa7146 *saa = &saa7146s[i]; + struct saa7146 *saa = pci_get_drvdata(pdev); memset(saa, 0, sizeof(*saa)); saa->user = 0; @@ -2101,8 +2070,8 @@ static int __devinit init_saa7146(int i, struct device *dev) /* allocate 32k dma buffer + 4k for page table */ if ((saa->dmadebi = kmalloc(32768 + 4096, GFP_KERNEL)) == NULL) { - dev_err(dev, "%d: debi kmalloc failed\n", i); - return -1; + dev_err(&pdev->dev, "%d: debi kmalloc failed\n", saa->nr); + goto err; } #if 0 saa->pagedebi = saa->dmadebi + 32768; /* top 4k is for mmu */ @@ -2112,37 +2081,23 @@ static int __devinit init_saa7146(int i, struct device *dev) #endif saa->audhead = saa->vidhead = saa->osdhead = 0; saa->audtail = saa->vidtail = saa->osdtail = 0; - if (saa->vidbuf == NULL) - if ((saa->vidbuf = vmalloc(524288)) == NULL) { - dev_err(dev, "%d: malloc failed\n", saa->nr); - return -ENOMEM; - } - if (saa->audbuf == NULL) - if ((saa->audbuf = vmalloc(65536)) == NULL) { - dev_err(dev, "%d: malloc failed\n", saa->nr); - vfree(saa->vidbuf); - saa->vidbuf = NULL; - return -ENOMEM; - } - if (saa->osdbuf == NULL) - if ((saa->osdbuf = vmalloc(131072)) == NULL) { - dev_err(dev, "%d: malloc failed\n", saa->nr); - vfree(saa->vidbuf); - vfree(saa->audbuf); - saa->vidbuf = saa->audbuf = NULL; - return -ENOMEM; - } + if (saa->vidbuf == NULL && (saa->vidbuf = vmalloc(524288)) == NULL) { + dev_err(&pdev->dev, "%d: malloc failed\n", saa->nr); + goto err; + } + if (saa->audbuf == NULL && (saa->audbuf = vmalloc(65536)) == NULL) { + dev_err(&pdev->dev, "%d: malloc failed\n", saa->nr); + goto errvid; + } + if (saa->osdbuf == NULL && (saa->osdbuf = vmalloc(131072)) == NULL) { + dev_err(&pdev->dev, "%d: malloc failed\n", saa->nr); + goto erraud; + } /* allocate 81920 byte buffer for clipping */ - if ((saa->dmavid2 = kmalloc(VIDEO_CLIPMAP_SIZE, GFP_KERNEL)) == NULL) { - dev_err(dev, "%d: clip kmalloc failed\n", saa->nr); - vfree(saa->vidbuf); - vfree(saa->audbuf); - vfree(saa->osdbuf); - saa->vidbuf = saa->audbuf = saa->osdbuf = NULL; - saa->dmavid2 = NULL; - return -1; + if ((saa->dmavid2 = kzalloc(VIDEO_CLIPMAP_SIZE, GFP_KERNEL)) == NULL) { + dev_err(&pdev->dev, "%d: clip kmalloc failed\n", saa->nr); + goto errosd; } - memset(saa->dmavid2, 0x00, VIDEO_CLIPMAP_SIZE); /* clip everything */ /* setup clipping registers */ saawrite(virt_to_bus(saa->dmavid2), SAA7146_BASE_EVEN2); saawrite(virt_to_bus(saa->dmavid2) + 128, SAA7146_BASE_ODD2); @@ -2153,14 +2108,25 @@ static int __devinit init_saa7146(int i, struct device *dev) saawrite(((SAA7146_MC2_UPLD_DMA2) << 16) | SAA7146_MC2_UPLD_DMA2, SAA7146_MC2); I2CBusScan(saa); + return 0; +errosd: + vfree(saa->osdbuf); + saa->osdbuf = NULL; +erraud: + vfree(saa->audbuf); + saa->audbuf = NULL; +errvid: + vfree(saa->vidbuf); + saa->vidbuf = NULL; +err: + return -ENOMEM; } static void stradis_release_saa(struct pci_dev *pdev) { u8 command; - int i = (int)pci_get_drvdata(pdev); - struct saa7146 *saa = &saa7146s[i]; + struct saa7146 *saa = pci_get_drvdata(pdev); /* turn off all capturing, DMA and IRQs */ saawrite(0xffff0000, SAA7146_MC1); /* reset chip */ @@ -2211,7 +2177,7 @@ static int __devinit stradis_probe(struct pci_dev *pdev, else dev_info(&pdev->dev, "%d: SDM2xx found\n", saa_num); - pci_set_drvdata(pdev, (void *)saa_num); + pci_set_drvdata(pdev, &saa7146s[saa_num]); retval = configure_saa7146(pdev, saa_num); if (retval) { @@ -2219,7 +2185,7 @@ static int __devinit stradis_probe(struct pci_dev *pdev, goto err; } - if (init_saa7146(saa_num, &pdev->dev) < 0) { + if (init_saa7146(pdev) < 0) { dev_err(&pdev->dev, "%d: error in initialization\n", saa_num); retval = -EIO; goto errrel; -- cgit v1.2.3