> +/* irq == 0 -> autoprobe, -1 ->forced no interrupt,
> + others -> irq line to use */
> static int tpm_tis_init(struct device *dev, resource_size_t start,
> - resource_size_t len, unsigned int irq)
> + resource_size_t len, int irq)
> {
> u32 vendor, intfcaps, intmask;
> int rc, i, irq_s, irq_e, probe;
> @@ -605,9 +610,11 @@ static int tpm_tis_init(struct device *dev,
> resource_size_t start,
> iowrite32(intmask,
> chip->vendor.iobase +
> TPM_INT_ENABLE(chip->vendor.locality));
> - if (interrupts)
> + if (!interrupts)
> + irq = -1;
> + if (irq != -1)
> chip->vendor.irq = irq;
> - if (interrupts && !chip->vendor.irq) {
> + if (irq == 0) {
This logic took me awhile to understand and figure out if it actually
worked. How about a flag for the interrupts and/or irq values that makes
things more explicit?
Kent
> irq_s =
> ioread8(chip->vendor.iobase +
> TPM_INT_VECTOR(chip->vendor.locality));
> @@ -821,12 +828,53 @@ static int tpm_tis_resume(struct device *dev)
>
> static SIMPLE_DEV_PM_OPS(tpm_tis_pm, tpm_pm_suspend, tpm_tis_resume);
>
> +#ifdef CONFIG_OF
> +static struct of_device_id tis_of_platform_match[] = {
> + {.compatible = "tcg,tpm_tis"},
> + {},
> +};
> +static int __devinit tis_of_init_one(struct platform_device *pdev)
> +{
> + struct resource res;
> + int ret;
> + int irq;
> +
> + if (!pdev->dev.of_node)
> + return -ENODEV;
> +
> + ret = of_address_to_resource(pdev->dev.of_node, 0, &res);
> + if (ret)
> + return ret;
> +
> + irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
> + if (irq == NO_IRQ)
> + irq = -1;
> + return tpm_tis_init(&pdev->dev, res.start, res.end - res.start + 1,
> + irq);
> +}
> +
> +static int __devexit tis_of_remove_one(struct platform_device *odev)
> +{
> + struct tpm_chip *chip = dev_get_drvdata(&odev->dev);
> + tpm_dev_vendor_release(chip);
> + kfree(chip);
> + return 0;
> +}
> +#endif
> +
> static struct platform_driver tis_drv = {
> .driver = {
> .name = "tpm_tis",
> .owner = THIS_MODULE,
> .pm = &tpm_tis_pm,
> +#ifdef CONFIG_OF
> + .of_match_table = tis_of_platform_match,
> +#endif
> },
> +#ifdef CONFIG_OF
> + .probe = tis_of_init_one,
> + .remove = __devexit_p(tis_of_remove_one)
> +#endif
> };
>
> static struct platform_device *pdev;
> @@ -849,7 +897,9 @@ static int __init init_tis(void)
> return PTR_ERR(pdev);
> if((rc=tpm_tis_init(&pdev->dev, TIS_MEM_BASE, TIS_MEM_LEN, 0)) != 0) {
> platform_device_unregister(pdev);
> +#ifndef CONFIG_OF
> platform_driver_unregister(&tis_drv);
> +#endif
> }
> return rc;
> }
> --
> 1.7.4.1
>
> --
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