[ALSA] wavefront: add request_firmware()

Load the YSS225 register initialization data using request_firmware(),
if possible, instead of using the built-in data blob.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 41 insertions, 10 deletions

diff --git a/sound/isa/wavefront/wavefront_fx.c b/sound/isa/wavefront/wavefront_fx.c
index 2e03dc504d4c..15331ed88194 100644
--- a/sound/isa/wavefront/wavefront_fx.c
+++ b/sound/isa/wavefront/wavefront_fx.c
@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/time.h>
 #include <linux/wait.h>
+#include <linux/firmware.h>
 #include <sound/core.h>
 #include <sound/snd_wavefront.h>
 #include <sound/initval.h>
@@ -34,7 +35,15 @@
 
 #define WAIT_IDLE       0xff
 
+#define FIRMWARE_IN_THE_KERNEL
+
+#ifdef FIRMWARE_IN_THE_KERNEL
 #include "yss225.c"
+static const struct firmware yss225_registers_firmware = {
+        .data = (u8 *)yss225_registers,
+        .size = sizeof yss225_registers
+};
+#endif
 
 static int
 wavefront_fx_idle (snd_wavefront_t *dev)
@@ -248,25 +257,47 @@ int __devinit
 snd_wavefront_fx_start (snd_wavefront_t *dev)
 {
         unsigned int i;
+        int err;
+        const struct firmware *firmware;
 
         if (dev->fx_initialized)
                 return 0;
 
-        for (i = 0; i < ARRAY_SIZE(yss225_registers); ++i) {
-                if (yss225_registers[i].addr >= 8 &&
-                    yss225_registers[i].addr < 16) {
-                        outb(yss225_registers[i].data,
-                             yss225_registers[i].addr + dev->base);
-                } else if (yss225_registers[i].addr == WAIT_IDLE) {
-                        if (!wavefront_fx_idle(dev))
-                                return -1;
+        err = request_firmware(&firmware, "yamaha/yss225_registers.bin",
+                               dev->card->dev);
+        if (err < 0) {
+#ifdef FIRMWARE_IN_THE_KERNEL
+                firmware = &yss225_registers_firmware;
+#else
+                err = -1;
+                goto out;
+#endif
+        }
+
+        for (i = 0; i + 1 < firmware->size; i += 2) {
+                if (firmware->data[i] >= 8 && firmware->data[i] < 16) {
+                        outb(firmware->data[i + 1],
+                             dev->base + firmware->data[i]);
+                } else if (firmware->data[i] == WAIT_IDLE) {
+                        if (!wavefront_fx_idle(dev)) {
+                                err = -1;
+                                goto out;
+                        }
                 } else {
                         snd_printk(KERN_ERR "invalid address"
                                    " in register data\n");
-                        return -1;
+                        err = -1;
+                        goto out;
                 }
         }
 
         dev->fx_initialized = 1;
-        return (0);
+        err = 0;
+
+out:
+#ifdef FIRMWARE_IN_THE_KERNEL
+        if (firmware != &yss225_registers_firmware)
+#endif
+                release_firmware(firmware);
+        return err;
 }