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| author | Vivek Gautam <gautam.vivek@samsung.com> | 2012-07-16 11:25:36 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 17:16:17 -0700 |
| commit | d51389306f598d635c55e72f42609b543efd9469 (patch) | |
| tree | 7d9f6b4c0b86badd5a54da76773a7c852f3eaf71 /drivers/usb/host/ohci-exynos.c | |
| parent | ba5952e0711b14d8d4fe172671f8aa6091ace3ee (diff) | |
| download | blackbird-obmc-linux-d51389306f598d635c55e72f42609b543efd9469.tar.gz blackbird-obmc-linux-d51389306f598d635c55e72f42609b543efd9469.zip | |
USB: ohci-exynos: Add support for device tree
This patch adds support to parse probe data for
ohci driver for exynos using device tree.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ohci-exynos.c')
| -rw-r--r-- | drivers/usb/host/ohci-exynos.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index 8bcbdb5ade2d..fc3091bd2379 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -12,6 +12,7 @@ */ #include <linux/clk.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <mach/ohci.h> #include <plat/usb-phy.h> @@ -71,6 +72,8 @@ static const struct hc_driver exynos_ohci_hc_driver = { .start_port_reset = ohci_start_port_reset, }; +static u64 ohci_exynos_dma_mask = DMA_BIT_MASK(32); + static int __devinit exynos_ohci_probe(struct platform_device *pdev) { struct exynos4_ohci_platdata *pdata; @@ -87,6 +90,16 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev) return -EINVAL; } + /* + * Right now device-tree probed devices don't get dma_mask set. + * Since shared usb code relies on it, set it here for now. + * Once we move to full device tree support this will vanish off. + */ + if (!pdev->dev.dma_mask) + pdev->dev.dma_mask = &ohci_exynos_dma_mask; + if (!pdev->dev.coherent_dma_mask) + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + exynos_ohci = devm_kzalloc(&pdev->dev, sizeof(struct exynos_ohci_hcd), GFP_KERNEL); if (!exynos_ohci) @@ -256,6 +269,14 @@ static const struct dev_pm_ops exynos_ohci_pm_ops = { .resume = exynos_ohci_resume, }; +#ifdef CONFIG_OF +static const struct of_device_id exynos_ohci_match[] = { + { .compatible = "samsung,exynos-ohci" }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos_ohci_match); +#endif + static struct platform_driver exynos_ohci_driver = { .probe = exynos_ohci_probe, .remove = __devexit_p(exynos_ohci_remove), @@ -264,6 +285,7 @@ static struct platform_driver exynos_ohci_driver = { .name = "exynos-ohci", .owner = THIS_MODULE, .pm = &exynos_ohci_pm_ops, + .of_match_table = of_match_ptr(exynos_ohci_match), } }; |
