On Wed, 21 Sep 2016, Mugunthan V N wrote:
> store the physical address of the device in its priv to use it
> for DMA addressing in the client drivers.
>
> Signed-off-by: Mugunthan V N <mugunthanvnm@xxxxxx>
> ---
> drivers/mfd/ti_am335x_tscadc.c | 1 +
> include/linux/mfd/ti_am335x_tscadc.h | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c
> index c8f027b..0f3fab4 100644
> --- a/drivers/mfd/ti_am335x_tscadc.c
> +++ b/drivers/mfd/ti_am335x_tscadc.c
> @@ -183,6 +183,7 @@ static int ti_tscadc_probe(struct platform_device *pdev)
> tscadc->irq = err;
>
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + tscadc->tscadc_phys_base = res->start;
This is unusual. Can't you use a virt_to_phys() variant instead?
> tscadc->tscadc_base = devm_ioremap_resource(&pdev->dev, res);
> if (IS_ERR(tscadc->tscadc_base))
> return PTR_ERR(tscadc->tscadc_base);
> diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h
> index 7f55b8b..e45a208 100644
> --- a/include/linux/mfd/ti_am335x_tscadc.h
> +++ b/include/linux/mfd/ti_am335x_tscadc.h
> @@ -155,6 +155,7 @@ struct ti_tscadc_dev {
> struct device *dev;
> struct regmap *regmap;
> void __iomem *tscadc_base;
> + phys_addr_t tscadc_phys_base;
> int irq;
> int used_cells; /* 1-2 */
> int tsc_wires;
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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