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[ALSA] Change an arugment of snd_mpu401_uart_new() to bit flags

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Change the 5th argument of snd_mpu401_uart_new() to bit flags
instead of a boolean.  The argument takes bits that consist of
MPU401_INFO_XXX flags.
The callers that used the value 1 there are replaced with
MPU401_INFO_INTEGRATED.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2006-05-23 13:24:30 +02:00
committed by Jaroslav Kysela
parent 140432fd2f
commit 302e4c2f9e
19 changed files with 147 additions and 62 deletions
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29
Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
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@@ -4215,7 +4215,7 @@ struct _snd_pcm_runtime {
<programlisting>
<![CDATA[
struct snd_rawmidi *rmidi;
snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port, integrated,
snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port, info_flags,
irq, irq_flags, &rmidi);
]]>
</programlisting>
@@ -4242,15 +4242,36 @@ struct _snd_pcm_runtime {
</para>
<para>
The 5th argument is bitflags for additional information.
When the i/o port address above is a part of the PCI i/o
region, the MPU401 i/o port might have been already allocated
(reserved) by the driver itself. In such a case, pass non-zero
to the 5th argument
(<parameter>integrated</parameter>). Otherwise, pass 0 to it,
(reserved) by the driver itself. In such a case, pass a bit flag
<constant>MPU401_INFO_INTEGRATED</constant>,
and
the mpu401-uart layer will allocate the i/o ports by itself.
</para>
<para>
When the controller supports only the input or output MIDI stream,
pass <constant>MPU401_INFO_INPUT</constant> or
<constant>MPU401_INFO_OUTPUT</constant> bitflag, respectively.
Then the rawmidi instance is created as a single stream.
</para>
<para>
<constant>MPU401_INFO_MMIO</constant> bitflag is used to change
the access method to MMIO (via readb and writeb) instead of
iob and outb. In this case, you have to pass the iomapped address
to <function>snd_mpu401_uart_new()</function>.
</para>
<para>
When <constant>MPU401_INFO_TX_IRQ</constant> is set, the output
stream isn't checked in the default interrupt handler. The driver
needs to call <function>snd_mpu401_uart_interrupt_tx()</function>
by itself to start processing the output stream in irq handler.
</para>
<para>
Usually, the port address corresponds to the command port and
port + 1 corresponds to the data port. If not, you may change