Differential D13039 Diff 35893 head/share/man/man9/bhnd.9

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head/share/man/man9/bhnd.9

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	.Fo bhnd_read_config			.Fo bhnd_read_config
	.Fa "device_t dev" "bus_size_t offset" "void *value" "u_int width"			.Fa "device_t dev" "bus_size_t offset" "void *value" "u_int width"
	.Fc			.Fc
	.Ft int			.Ft int
	.Fo bhnd_write_config			.Fo bhnd_write_config
	.Fa "device_t dev" "bus_size_t offset" "const void *value" "u_int width"			.Fa "device_t dev" "bus_size_t offset" "const void *value" "u_int width"
	.Fc			.Fc
	.Ft int			.Ft int
	.Fn bhnd_reset_hw "device_t dev" "uint16_t ioctl"			.Fn bhnd_reset_hw "device_t dev" "uint16_t ioctl" "uint16_t reset_ioctl"
	.Ft int			.Ft int
	.Fn bhnd_suspend_hw "device_t dev"			.Fn bhnd_suspend_hw "device_t dev" "uint16_t ioctl"
	.Ft bool			.Ft bool
	.Fn bhnd_is_hw_suspended "device_t dev"			.Fn bhnd_is_hw_suspended "device_t dev"
	.\"			.\"
	.Ss "Device Information Functions"			.Ss "Device Information Functions"
	.Ft bhnd_attach_type			.Ft bhnd_attach_type
	.Fo bhnd_get_attach_type			.Fo bhnd_get_attach_type
	.Fa "device_t dev"			.Fa "device_t dev"
	.Fc			.Fc
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	function.			function.
	.Pp			.Pp
	The			The
	.Fn bhnd_suspend_hw			.Fn bhnd_suspend_hw
	function transitions the device			function transitions the device
	.Fa dev			.Fa dev
	to a low power			to a low power
	.Dq RESET			.Dq RESET
	state.			state, writing
				.Fa ioctl
				to the I/O control flags of
				.Fa dev .
	The hardware may be brought out of this state using			The hardware may be brought out of this state using
	.Fn bhnd_reset_hw .			.Fn bhnd_reset_hw .
	.Pp			.Pp
	The			The
	.Fn bhnd_reset_hw			.Fn bhnd_reset_hw
	function first transitions the device			function first transitions the device
	.Fa dev			.Fa dev
	to a low power RESET state, and then brings the device out of RESET, writing			to a low power RESET state, writing
				.Fa ioctl_reset
				to the I/O control flags
				of
				.Fa dev ,
				and then brings the device out of RESET, writing
	.Fa ioctl			.Fa ioctl
	to the I/O control flags of			to the device's I/O control flags.
	.Fa dev .
	.Pp			.Pp
	The			The
	.Fn bhnd_is_hw_suspended			.Fn bhnd_is_hw_suspended
	function returns			function returns
	.Dv true			.Dv true
	if the device			if the device
	.Fa dev			.Fa dev
	is currently held in a RESET state, or is otherwise not clocked.			is currently held in a RESET state, or is otherwise not clocked.
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