diff options
author | David Brownell <dbrownell@users.sourceforge.net> | 2008-09-08 06:41:57 (GMT) |
---|---|---|
committer | Kevin Hilman <khilman@deeprootsystems.com> | 2008-09-17 07:31:42 (GMT) |
commit | cece6e5af23815ae4cfa6d3dab1303f80b42feef (patch) | |
tree | bf548c083f0349fa26f0ad9452aed0445377ff86 /arch/arm/mach-davinci | |
parent | d395e6ad98912b52a299999ab667de9a1f393c91 (diff) | |
download | linux-fsl-qoriq-cece6e5af23815ae4cfa6d3dab1303f80b42feef.tar.xz |
ARM: DaVinci: usb setup
Declare the musb_hdrc platform device for DaVinci.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci')
-rw-r--r-- | arch/arm/mach-davinci/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-davinci/include/mach/common.h | 3 | ||||
-rw-r--r-- | arch/arm/mach-davinci/usb.c | 116 |
3 files changed, 120 insertions, 1 deletions
diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile index bddfbb7..4dc4585 100644 --- a/arch/arm/mach-davinci/Makefile +++ b/arch/arm/mach-davinci/Makefile @@ -5,7 +5,7 @@ # Common objects obj-y := time.o irq.o clock.o serial.o io.o id.o psc.o \ - gpio.o mux.o devices.o + gpio.o mux.o devices.o usb.o # Board specific obj-$(CONFIG_MACH_DAVINCI_EVM) += board-evm.o diff --git a/arch/arm/mach-davinci/include/mach/common.h b/arch/arm/mach-davinci/include/mach/common.h index a97dfbb..4b522e5 100644 --- a/arch/arm/mach-davinci/include/mach/common.h +++ b/arch/arm/mach-davinci/include/mach/common.h @@ -16,4 +16,7 @@ struct sys_timer; extern struct sys_timer davinci_timer; +/* parameters describe VBUS sourcing for host mode */ +extern void setup_usb(unsigned mA, unsigned potpgt_msec); + #endif /* __ARCH_ARM_MACH_DAVINCI_COMMON_H */ diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c new file mode 100644 index 0000000..fe182a8 --- /dev/null +++ b/arch/arm/mach-davinci/usb.c @@ -0,0 +1,116 @@ +/* + * USB + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> + +#include <linux/usb/musb.h> +#include <linux/usb/otg.h> + +#include <mach/common.h> +#include <mach/hardware.h> + +#if defined(CONFIG_USB_MUSB_HDRC) || defined(CONFIG_USB_MUSB_HDRC_MODULE) +static struct musb_hdrc_eps_bits musb_eps[] = { + { "ep1_tx", 8, }, + { "ep1_rx", 8, }, + { "ep2_tx", 8, }, + { "ep2_rx", 8, }, + { "ep3_tx", 5, }, + { "ep3_rx", 5, }, + { "ep4_tx", 5, }, + { "ep4_rx", 5, }, +}; + +static struct musb_hdrc_config musb_config = { + .multipoint = true, + .dyn_fifo = true, + .soft_con = true, + .dma = true, + + .num_eps = 5, + .dma_channels = 8, + .ram_bits = 10, + .eps_bits = musb_eps, +}; + +static struct musb_hdrc_platform_data usb_data = { +#if defined(CONFIG_USB_MUSB_OTG) + /* OTG requires a Mini-AB connector */ + .mode = MUSB_OTG, +#elif defined(CONFIG_USB_MUSB_PERIPHERAL) + .mode = MUSB_PERIPHERAL, +#elif defined(CONFIG_USB_MUSB_HOST) + .mode = MUSB_HOST, +#endif + .config = &musb_config, +}; + +static struct resource usb_resources[] = { + { + /* physical address */ + .start = DAVINCI_USB_OTG_BASE, + .end = DAVINCI_USB_OTG_BASE + 0x5ff, + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_USBINT, + .flags = IORESOURCE_IRQ, + }, +}; + +static u64 usb_dmamask = DMA_32BIT_MASK; + +static struct platform_device usb_dev = { + .name = "musb_hdrc", + .id = -1, + .dev = { + .platform_data = &usb_data, + .dma_mask = &usb_dmamask, + .coherent_dma_mask = DMA_32BIT_MASK, + }, + .resource = usb_resources, + .num_resources = ARRAY_SIZE(usb_resources), +}; + +#ifdef CONFIG_USB_MUSB_OTG + +static struct otg_transceiver *xceiv; + +struct otg_transceiver *otg_get_transceiver(void) +{ + if (xceiv) + get_device(xceiv->dev); + return xceiv; +} +EXPORT_SYMBOL(otg_get_transceiver); + +int otg_set_transceiver(struct otg_transceiver *x) +{ + if (xceiv && x) + return -EBUSY; + xceiv = x; + return 0; +} +EXPORT_SYMBOL(otg_set_transceiver); + +#endif + +void __init setup_usb(unsigned mA, unsigned potpgt_msec) +{ + usb_data.power = mA / 2; + usb_data.potpgt = potpgt_msec / 2; + platform_device_register(&usb_dev); +} + +#else + +void __init setup_usb(unsigned mA, unsigned potpgt_msec) +{ +} + +#endif /* CONFIG_USB_MUSB_HDRC */ + |