Revert to Fedora kernel-2.6.17-1.2187_FC5 patched with vs2.0.2.1; there are too many...

[linux-2.6.git] / Documentation / sound / alsa / DocBook / writing-an-alsa-driver.tmpl

diff --git a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
index b8dc51c..1faf763 100644 (file)
--- a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
+++ b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
@@ -1149,7 +1149,7 @@
           }
           chip->port = pci_resource_start(pci, 0);
           if (request_irq(pci->irq, snd_mychip_interrupt,
-                          IRQF_DISABLED|IRQF_SHARED, "My Chip", chip)) {
+                          SA_INTERRUPT|SA_SHIRQ, "My Chip", chip)) {
                   printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
                   snd_mychip_free(chip);
                   return -EBUSY;
@@ -1172,7 +1172,7 @@
   }        
 
   /* PCI IDs */
-  static struct pci_device_id snd_mychip_ids[] = {
+  static struct pci_device_id snd_mychip_ids[] __devinitdata = {
           { PCI_VENDOR_ID_FOO, PCI_DEVICE_ID_BAR,
             PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },
           ....
@@ -1323,7 +1323,7 @@
           <programlisting>
 <![CDATA[
   if (request_irq(pci->irq, snd_mychip_interrupt,
-                  IRQF_DISABLED|IRQF_SHARED, "My Chip", chip)) {
+                  SA_INTERRUPT|SA_SHIRQ, "My Chip", chip)) {
           printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
           snd_mychip_free(chip);
           return -EBUSY;
@@ -1342,7 +1342,7 @@
 
       <para>
       On the PCI bus, the interrupts can be shared. Thus,
-      <constant>IRQF_SHARED</constant> is given as the interrupt flag of
+      <constant>SA_SHIRQ</constant> is given as the interrupt flag of
       <function>request_irq()</function>. 
       </para>
 
@@ -1565,7 +1565,7 @@
         <informalexample>
           <programlisting>
 <![CDATA[
-  static struct pci_device_id snd_mychip_ids[] = {
+  static struct pci_device_id snd_mychip_ids[] __devinitdata = {
           { PCI_VENDOR_ID_FOO, PCI_DEVICE_ID_BAR,
             PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },
           ....
@@ -3048,7 +3048,7 @@ struct _snd_pcm_runtime {
         </para>
 
         <para>
-          If you acquire a spinlock in the interrupt handler, and the
+          If you aquire a spinlock in the interrupt handler, and the
         lock is used in other pcm callbacks, too, then you have to
         release the lock before calling
         <function>snd_pcm_period_elapsed()</function>, because
@@ -4215,7 +4215,7 @@ struct _snd_pcm_runtime {
           <programlisting>
 <![CDATA[
   struct snd_rawmidi *rmidi;
-  snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port, info_flags,
+  snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port, integrated,
                       irq, irq_flags, &rmidi);
 ]]>
           </programlisting>
@@ -4242,36 +4242,15 @@ 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 a bit flag
-      <constant>MPU401_INFO_INTEGRATED</constant>,
+      (reserved) by the driver itself. In such a case, pass non-zero
+      to the 5th argument
+      (<parameter>integrated</parameter>). Otherwise, pass 0 to it,
       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
@@ -5354,7 +5333,7 @@ struct _snd_pcm_runtime {
       <informalexample>
         <programlisting>
 <![CDATA[
-  snd_info_set_text_ops(entry, chip, my_proc_read);
+  snd_info_set_text_ops(entry, chip, read_size, my_proc_read);
 ]]>
         </programlisting>
       </informalexample>
@@ -5415,12 +5394,29 @@ struct _snd_pcm_runtime {
       <informalexample>
         <programlisting>
 <![CDATA[
+  entry->c.text.write_size = 256;
   entry->c.text.write = my_proc_write;
 ]]>
         </programlisting>
       </informalexample>
     </para>
 
+    <para>
+    The buffer size for read is set to 1024 implicitly by
+    <function>snd_info_set_text_ops()</function>.  It should suffice
+    in most cases (the size will be aligned to
+    <constant>PAGE_SIZE</constant> anyway), but if you need to handle
+    very large text files, you can set it explicitly, too.
+
+      <informalexample>
+        <programlisting>
+<![CDATA[
+  entry->c.text.read_size = 65536;
+]]>
+        </programlisting>
+      </informalexample>
+    </para>
+
     <para>
       For the write callback, you can use
     <function>snd_info_get_line()</function> to get a text line, and
@@ -5566,7 +5562,7 @@ struct _snd_pcm_runtime {
          power status.</para></listitem>
         <listitem><para>Call <function>snd_pcm_suspend_all()</function> to suspend the running PCM streams.</para></listitem>
        <listitem><para>If AC97 codecs are used, call
-       <function>snd_ac97_suspend()</function> for each codec.</para></listitem>
+       <function>snd_ac97_resume()</function> for each codec.</para></listitem>
         <listitem><para>Save the register values if necessary.</para></listitem>
         <listitem><para>Stop the hardware if necessary.</para></listitem>
         <listitem><para>Disable the PCI device by calling