From f29b8df6261e72d9a426d6d8c175a896931654e2 Mon Sep 17 00:00:00 2001
From: Rohit kumar <rohitkr@codeaurora.org>
Date: Wed, 19 Aug 2020 15:19:33 +0530
Subject: tinyalsa: add plugin support for mmap/poll ops

---
 src/pcm_hw.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'src/pcm_hw.c')

diff --git a/src/pcm_hw.c b/src/pcm_hw.c
index e25cdae..38b2e83 100644
--- a/src/pcm_hw.c
+++ b/src/pcm_hw.c
@@ -37,6 +37,7 @@
 #include <poll.h>
 
 #include <sys/ioctl.h>
+#include <sys/mman.h>
 #include <linux/ioctl.h>
 #include <sound/asound.h>
 #include <tinyalsa/asoundlib.h>
@@ -77,6 +78,25 @@ static int pcm_hw_ioctl(void *data, unsigned int cmd, ...)
     return ioctl(hw_data->fd, cmd, arg);
 }
 
+static int pcm_hw_poll(void *data __attribute__((unused)),
+                        struct pollfd *pfd, nfds_t nfds, int timeout)
+{
+    return poll(pfd, nfds, timeout);
+}
+
+static void *pcm_hw_mmap(void *data, void *addr, size_t length, int prot,
+                       int flags, off_t offset)
+{
+    struct pcm_hw_data *hw_data = data;
+
+    return mmap(addr, length, prot, flags, hw_data->fd, offset);
+}
+
+static int pcm_hw_munmap(void *data __attribute__((unused)), void *addr, size_t length)
+{
+    return munmap(addr, length);
+}
+
 static int pcm_hw_open(unsigned int card, unsigned int device,
                 unsigned int flags, void **data, struct snd_node *node)
 {
@@ -115,5 +135,8 @@ const struct pcm_ops hw_ops = {
     .open = pcm_hw_open,
     .close = pcm_hw_close,
     .ioctl = pcm_hw_ioctl,
+    .mmap = pcm_hw_mmap,
+    .munmap = pcm_hw_munmap,
+    .poll = pcm_hw_poll,
 };
 
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