[media] ngene: Shutdown workaround
Implement shutdown workaround for some chipsets. Signed-off-by: Ralph Metzler <rjkm@metzlerbros.de> Signed-off-by: Oliver Endriss <o.endriss@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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@ -436,6 +436,7 @@ static struct pci_driver ngene_pci_driver = {
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.probe = ngene_probe,
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.remove = __devexit_p(ngene_remove),
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.err_handler = &ngene_errors,
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.shutdown = ngene_shutdown,
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};
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static __init int module_init_ngene(void)
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@ -45,6 +45,10 @@ static int one_adapter = 1;
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module_param(one_adapter, int, 0444);
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MODULE_PARM_DESC(one_adapter, "Use only one adapter.");
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static int shutdown_workaround;
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module_param(shutdown_workaround, int, 0644);
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MODULE_PARM_DESC(one_adapter, "Activate workaround for shutdown problem with some chipsets.");
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static int debug;
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module_param(debug, int, 0444);
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MODULE_PARM_DESC(debug, "Print debugging information.");
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@ -1574,6 +1578,39 @@ static void cxd_detach(struct ngene *dev)
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ci->en = 0;
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}
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/***********************************/
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/* workaround for shutdown failure */
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/***********************************/
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static void ngene_unlink(struct ngene *dev)
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{
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struct ngene_command com;
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com.cmd.hdr.Opcode = CMD_MEM_WRITE;
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com.cmd.hdr.Length = 3;
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com.cmd.MemoryWrite.address = 0x910c;
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com.cmd.MemoryWrite.data = 0xff;
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com.in_len = 3;
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com.out_len = 1;
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down(&dev->cmd_mutex);
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ngwritel(0, NGENE_INT_ENABLE);
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ngene_command_mutex(dev, &com);
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up(&dev->cmd_mutex);
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}
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void ngene_shutdown(struct pci_dev *pdev)
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{
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struct ngene *dev = (struct ngene *)pci_get_drvdata(pdev);
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if (!dev || !shutdown_workaround)
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return;
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printk(KERN_INFO DEVICE_NAME ": shutdown workaround...\n");
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ngene_unlink(dev);
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pci_disable_device(pdev);
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}
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/****************************************************************************/
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/* device probe/remove calls ************************************************/
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/****************************************************************************/
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@ -881,6 +881,7 @@ struct ngene_buffer {
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int __devinit ngene_probe(struct pci_dev *pci_dev,
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const struct pci_device_id *id);
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void __devexit ngene_remove(struct pci_dev *pdev);
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void ngene_shutdown(struct pci_dev *pdev);
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int ngene_command(struct ngene *dev, struct ngene_command *com);
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int ngene_command_gpio_set(struct ngene *dev, u8 select, u8 level);
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void set_transfer(struct ngene_channel *chan, int state);
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