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#      usbs_sa11x0.cdl

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#      SA11X0 USB support.

#

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# ====================================================================

######DESCRIPTIONBEGIN####

#

# Author(s):      bartv

# Original data:  bartv

# Contributors:

# Date:           2000-10-04

#

#####DESCRIPTIONEND####

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cdl_package CYGPKG_DEVS_USB_SA11X0 {

    display     "SA11X0 USB Device Driver"

    include_dir "cyg/io/usb"

    parent      CYGPKG_USB

    implements  CYGHWR_IO_USB_SLAVE

    doc         ref/devs-usb-sa11x0.html

    # Make sure that we are running on the right hardware.

    requires CYGPKG_HAL_ARM

    requires CYGPKG_HAL_ARM_SA11X0

    description "

        The on-chip serial port 0 on the SA11X0 implements a USB

        device controller, facilitating the use of this processor

        in USB peripherals. This package provides a suitable eCos

        device driver."

    cdl_option CYGFUN_DEVS_USB_SA11X0_EP0 {

        display       "Support the control endpoint 0"

        default_value CYGINT_IO_USB_SLAVE_CLIENTS

        # And the USB support packages

        requires      CYGPKG_IO_USB CYGPKG_IO_USB_SLAVE

        compile       usbs_sa11x0.c

        compile       -library=libextras.a usbs_sa11x0_data.cxx

        description "

            Enable support for endpoint 0. If this support is disabled

            then the entire USB port is unusable."

    }

    cdl_option CYGVAR_DEVS_USB_SA11X0_EP0_DEVTAB_ENTRY {

        display       "Provide a devtab entry for endpoint 0"

        default_value CYGGLO_IO_USB_SLAVE_PROVIDE_DEVTAB_ENTRIES

        requires      CYGPKG_IO

        description "

            If endpoint 0 will only be accessed via the low-level

            USB-specific calls then there is no need for an entry

            in the device table, saving some memory. If the

            application intends to access the endpoint by means

            of open and ioctl calls then a devtab entry is needed.

        "

    }

    cdl_component CYGPKG_DEVS_USB_SA11X0_EP1 {

        display       "Support endpoint 1, used for host->slave communications"

        implements    CYGHWR_IO_USB_SLAVE_OUT_ENDPOINTS

        requires      CYGFUN_DEVS_USB_SA11X0_EP0

        default_value CYGFUN_DEVS_USB_SA11X0_EP0

        description "

            In the SA11X0 USB implementation endpoint 1 can only be

            used for host->slave communication. If the intended application

            only involves slave->host transfers then the support for

            endpoint 1 can be disabled. Note that this does not affect

            control messages which always go via endpoint 0."

        cdl_option CYGNUM_DEVS_USB_SA11X0_EP1_DMA_CHANNEL {

            display       "Control DMA usage for endpoint 1"

            flavor        booldata

            legal_values  0 to 5

            default_value 4

            description "

                In the SA11X0 USB implementation endpoint 1 only has

                a 20-byte fifo. If the application only involves

                small transfers then this may prove sufficient, but

                for larger transfers the use of a DMA engine is

                mandated. This configuration option allows the

                use of DMA engine to be disabled or enabled, and the

                specific DMA channel to be selected. The SA11X0

                supports 6 DMA channels numbered 0 to 5. If DMA

                is enabled for endpoint 1 then the selected channel

                cannot be used by any other code."

        }

        cdl_option CYGVAR_DEVS_USB_SA11X0_EP1_DEVTAB_ENTRY {

            display       "Provide a devtab entry for endpoint 1"

            default_value CYGGLO_IO_USB_SLAVE_PROVIDE_DEVTAB_ENTRIES

            requires      CYGPKG_IO

            description "

                If endpoint 1 will only be accessed via the low-level

                USB-specific calls then there is no need for an entry

                in the device table, saving some memory. If the

                application intends to access the endpoint by means

                of open and read calls then a devtab entry is needed.

            "

        }

    }

    cdl_component CYGPKG_DEVS_USB_SA11X0_EP2 {

        display       "Support endpoint 2, used for slave->host communications"

        implements CYGHWR_IO_USB_SLAVE_IN_ENDPOINTS

        requires      CYGFUN_DEVS_USB_SA11X0_EP0

        default_value CYGFUN_DEVS_USB_SA11X0_EP0

        description "

            In the SA11X0 USB implementation endpoint 2 can only be

            used for slave->host communication. If the intended application

            only involves host->slave transfers then the support for

            endpoint 2 can be disabled. Note that this does not affect

            control messages which always go via endpoint 0."

        cdl_option CYGNUM_DEVS_USB_SA11X0_EP2_DMA_CHANNEL {

            display       "Control DMA usage for endpoint 2"

            flavor        booldata

            legal_values  0 to 5

            default_value 5

            description "

                In the SA11X0 USB implementation endpoint 2 only has

                a 16-byte fifo. If the application only involves

                small transfers then this may prove sufficient, but

                for larger transfers the use of a DMA engine is

                mandated. This configuration option allows the

                use of DMA engine to be disabled or enabled, and the

                specific DMA channel to be selected. The SA11X0

                supports 6 DMA channels numbered 0 to 5. If DMA

                is enabled for endpoint 2 then the selected channel

                cannot be used by any other code."

        }

        cdl_option CYGVAR_DEVS_USB_SA11X0_EP2_DEVTAB_ENTRY {

            display       "Provide a devtab entry for endpoint 2"

            default_value CYGGLO_IO_USB_SLAVE_PROVIDE_DEVTAB_ENTRIES

            requires      CYGPKG_IO

            description "

                If endpoint 2 will only be accessed via the low-level

                USB-specific calls then there is no need for an entry

                in the device table, saving some memory. If the

                application intends to access the endpoint by means

                of open and write calls then a devtab entry is needed.

            "

        }

    }

    cdl_option CYGDAT_DEVS_USB_SA11X0_DEVTAB_BASENAME {

        display       "Base name for devtab entries"

        flavor        data

        active_if     { CYGVAR_DEVS_USB_SA11X0_EP0_DEVTAB_ENTRY ||

                        CYGVAR_DEVS_USB_SA11X0_EP1_DEVTAB_ENTRY ||

                        CYGVAR_DEVS_USB_SA11X0_EP2_DEVTAB_ENTRY

        }

        default_value { "\"/dev/usbs\"" }

        description "

            If the SA11X0 USB device driver package provides devtab

            entries for any of the endpoints then this option gives

            control over the names of these entries. By default the

            endpoints will be called \"/dev/usbs0c\", \"/dev/usbs1r\"

            and \"/dev/usbs2w\" (assuming all three endpoints are

            enabled. The common part \"/dev/usbs\" is determined

            by this configuration option. It may be necessary to

            change this if there are multiple USB slave-side

            devices on the target hardware to prevent a name clash.

        "

    }

}