diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2010-11-02 11:56:54 +0100 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2010-11-17 10:01:21 +0100 |
| commit | 6332c1071811a1d588cfc93330d87a57a7460a1b (patch) | |
| tree | b9e5a427bd583dc2cca240b190152d1a06ebd99a | |
| parent | e08300043ee4e2df10be551b76e126d6c02f26cc (diff) | |
ARM: imx: allow specifying a dma mask when creating a platform device
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
| -rw-r--r-- | arch/arm/plat-mxc/devices.c | 23 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/devices-common.h | 14 |
2 files changed, 33 insertions, 4 deletions
diff --git a/arch/arm/plat-mxc/devices.c b/arch/arm/plat-mxc/devices.c index 735776d84956..e9bcefe79a43 100644 --- a/arch/arm/plat-mxc/devices.c +++ b/arch/arm/plat-mxc/devices.c @@ -17,6 +17,7 @@ */ #include <linux/kernel.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/err.h> #include <linux/platform_device.h> @@ -36,9 +37,10 @@ int __init mxc_register_device(struct platform_device *pdev, void *data) return ret; } -struct platform_device *__init imx_add_platform_device(const char *name, int id, +struct platform_device *__init imx_add_platform_device_dmamask( + const char *name, int id, const struct resource *res, unsigned int num_resources, - const void *data, size_t size_data) + const void *data, size_t size_data, u64 dmamask) { int ret = -ENOMEM; struct platform_device *pdev; @@ -47,6 +49,23 @@ struct platform_device *__init imx_add_platform_device(const char *name, int id, if (!pdev) goto err; + if (dmamask) { + /* + * This memory isn't freed when the device is put, + * I don't have a nice idea for that though. Conceptually + * dma_mask in struct device should not be a pointer. + * See http://thread.gmane.org/gmane.linux.kernel.pci/9081 + */ + pdev->dev.dma_mask = + kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL); + if (!pdev->dev.dma_mask) + /* ret is still -ENOMEM; */ + goto err; + + *pdev->dev.dma_mask = dmamask; + pdev->dev.coherent_dma_mask = dmamask; + } + if (res) { ret = platform_device_add_resources(pdev, res, num_resources); if (ret) diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h index 4eb45fa53ac5..a5e97b8b3b79 100644 --- a/arch/arm/plat-mxc/include/mach/devices-common.h +++ b/arch/arm/plat-mxc/include/mach/devices-common.h @@ -10,9 +10,19 @@ #include <linux/platform_device.h> #include <linux/init.h> -struct platform_device *imx_add_platform_device(const char *name, int id, +struct platform_device *imx_add_platform_device_dmamask( + const char *name, int id, const struct resource *res, unsigned int num_resources, - const void *data, size_t size_data); + const void *data, size_t size_data, u64 dmamask); + +static inline struct platform_device *imx_add_platform_device( + const char *name, int id, + const struct resource *res, unsigned int num_resources, + const void *data, size_t size_data) +{ + return imx_add_platform_device_dmamask( + name, id, res, num_resources, data, size_data, 0); +} #include <linux/fec.h> struct imx_fec_data { |