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| author |   Vivek Gautam <gautam.vivek@samsung.com> | 2012-07-16 11:25:37 +0530 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 17:16:17 -0700 |
| commit | 2c026e2b36e8e934de9726398a3e1eeb3fa6055c (patch) | |
| tree | 93d74f8d90bec677238e2b2ec5c95e49e0e00be4 /drivers/usb | |
| parent | USB: ohci-exynos: Add support for device tree (diff) | |
| download | linux-dev-2c026e2b36e8e934de9726398a3e1eeb3fa6055c.tar.xz linux-dev-2c026e2b36e8e934de9726398a3e1eeb3fa6055c.zip | |
USB: ehci-s5p: Add support for device tree
This patch adds support to parse probe data for
ehci 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')
| -rw-r--r-- | drivers/usb/host/ehci-s5p.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c index 13c179fb2ee2..37d84cf9a408 100644 --- a/drivers/usb/host/ehci-s5p.c +++ b/drivers/usb/host/ehci-s5p.c @@ -13,6 +13,7 @@ */ #include <linux/clk.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <plat/ehci.h> #include <plat/usb-phy.h> @@ -63,6 +64,8 @@ static const struct hc_driver s5p_ehci_hc_driver = { .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; +static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32); + static int __devinit s5p_ehci_probe(struct platform_device *pdev) { struct s5p_ehci_platdata *pdata; @@ -79,6 +82,16 @@ static int __devinit s5p_ehci_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 = &ehci_s5p_dma_mask; + if (!pdev->dev.coherent_dma_mask) + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + s5p_ehci = devm_kzalloc(&pdev->dev, sizeof(struct s5p_ehci_hcd), GFP_KERNEL); if (!s5p_ehci) @@ -233,6 +246,14 @@ static const struct dev_pm_ops s5p_ehci_pm_ops = { .resume = s5p_ehci_resume, }; +#ifdef CONFIG_OF +static const struct of_device_id exynos_ehci_match[] = { + { .compatible = "samsung,exynos-ehci" }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos_ehci_match); +#endif + static struct platform_driver s5p_ehci_driver = { .probe = s5p_ehci_probe, .remove = __devexit_p(s5p_ehci_remove), @@ -241,6 +262,7 @@ static struct platform_driver s5p_ehci_driver = { .name = "s5p-ehci", .owner = THIS_MODULE, .pm = &s5p_ehci_pm_ops, + .of_match_table = of_match_ptr(exynos_ehci_match), } }; |