On Thu 21 Aug 06:22 PDT 2014, Lee Jones wrote:
> > diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
> > +static const struct qcom_rpm_data msm8660_template = {
> > + .version = -1,
>
> -1?
>
2 would be a better number...
> > + .resource_table = msm8660_rpm_resource_table,
> > + .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
> > +};
>
> [...]
>
> > +struct qcom_rpm *dev_get_qcom_rpm(struct device *dev)
> > +{
> > + return dev_get_drvdata(dev);
> > +}
> > +EXPORT_SYMBOL(dev_get_qcom_rpm);
>
> No need for this at all. Use dev_get_drvdata() direct instead.
>
I see that others have put this as static inline in the header file, so I will
follow that. I don't want to expose this directly in the implementation of the
clients.
Let me know if you object.
> [...]
>
> > +static int qcom_rpm_probe(struct platform_device *pdev)
> > +{
[...]
> > +
> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > + rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
> > + rpm->ctrl_regs = rpm->status_regs + 0x400;
> > + rpm->req_regs = rpm->status_regs + 0x600;
> > + if (IS_ERR(rpm->status_regs))
> > + return PTR_ERR(rpm->status_regs);
>
> You should probably do this _before_ using it above.
>
There's no difference in behaviour, but it just feels cleaner than:
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(rpm->status_regs))
return PTR_ERR(rpm->status_regs);
rpm->ctrl_regs = rpm->status_regs + 0x400;
rpm->req_regs = rpm->status_regs + 0x600;
If you don't like it, I'll change it.
[...]
> > +
> > + writel(fw_version[0], RPM_CTRL_REG(rpm, 0));
> > + writel(fw_version[1], RPM_CTRL_REG(rpm, 1));
> > + writel(fw_version[2], RPM_CTRL_REG(rpm, 2));
>
> A comment documenting what this is doing would be helpful here.
>
Sounds reasonable, this seems to be incorrect now that I had to investigate
what's really happening. So I'll update it.
[...]
> > +}
> > +
> > +static int qcom_rpm_remove_child(struct device *dev, void *unused)
> > +{
> > + platform_device_unregister(to_platform_device(dev));
> > + return 0;
> > +}
> > +
> > +static int qcom_rpm_remove(struct platform_device *pdev)
> > +{
> > + device_for_each_child(&pdev->dev, NULL, qcom_rpm_remove_child);
>
> of_platform_depopulate()?
>
Forgot that we had that now, will update.
> > + return 0;
> > +}
> > +
> > +static struct platform_driver qcom_rpm_driver = {
> > + .probe = qcom_rpm_probe,
> > + .remove = qcom_rpm_remove,
> > + .driver = {
> > + .name = "qcom_rpm",
> > + .owner = THIS_MODULE,
>
> Remove this line, it's taken care of for you.
>
OK
> > + .of_match_table = qcom_rpm_of_match,
> > + },
> > +};
> > +
> > +static int __init qcom_rpm_init(void)
> > +{
> > + return platform_driver_register(&qcom_rpm_driver);
> > +}
> > +arch_initcall(qcom_rpm_init);
> > +
> > +static void __exit qcom_rpm_exit(void)
> > +{
> > + platform_driver_unregister(&qcom_rpm_driver);
> > +}
> > +module_exit(qcom_rpm_exit)
> > +
> > +MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
> > +MODULE_LICENSE("GPL v2");
>
> No one authored this driver?
>
Thought that was optional, will update.
Thanks for the review!
Regards,
Bjorn
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