[ALSA] wavefront - Use standard firmware loader
[linux-2.6.git] / sound / isa / wavefront / wavefront_synth.c
index bacc51c..2da11e8 100644 (file)
@@ -27,6 +27,7 @@
 #include <linux/delay.h>
 #include <linux/time.h>
 #include <linux/wait.h>
+#include <linux/firmware.h>
 #include <linux/moduleparam.h>
 #include <sound/core.h>
 #include <sound/snd_wavefront.h>
@@ -53,9 +54,8 @@ static int debug_default = 0;  /* you can set this to control debugging
 
 /* XXX this needs to be made firmware and hardware version dependent */
 
-static char *ospath = "/etc/sound/wavefront.os"; /* where to find a processed
-                                                   version of the WaveFront OS
-                                                */
+#define DEFAULT_OSPATH "wavefront.os"
+static char *ospath = DEFAULT_OSPATH; /* the firmware file name */
 
 static int wait_usecs = 150; /* This magic number seems to give pretty optimal
                                throughput based on my limited experimentation.
@@ -97,7 +97,7 @@ MODULE_PARM_DESC(sleep_interval, "how long to sleep when waiting for reply");
 module_param(sleep_tries, int, 0444);
 MODULE_PARM_DESC(sleep_tries, "how many times to try sleeping during a wait");
 module_param(ospath, charp, 0444);
-MODULE_PARM_DESC(ospath, "full pathname to processed ICS2115 OS firmware");
+MODULE_PARM_DESC(ospath, "pathname to processed ICS2115 OS firmware");
 module_param(reset_time, int, 0444);
 MODULE_PARM_DESC(reset_time, "how long to wait for a reset to take effect");
 module_param(ramcheck_time, int, 0444);
@@ -1938,111 +1938,75 @@ wavefront_reset_to_cleanliness (snd_wavefront_t *dev)
        return (1);
 }
 
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/unistd.h>
-#include <linux/syscalls.h>
-#include <asm/uaccess.h>
-
-
 static int __devinit
 wavefront_download_firmware (snd_wavefront_t *dev, char *path)
 
 {
-       unsigned char section[WF_SECTION_MAX];
-       signed char section_length; /* yes, just a char; max value is WF_SECTION_MAX */
+       unsigned char *buf;
+       int len, err;
        int section_cnt_downloaded = 0;
-       int fd;
-       int c;
-       int i;
-       mm_segment_t fs;
-
-       /* This tries to be a bit cleverer than the stuff Alan Cox did for
-          the generic sound firmware, in that it actually knows
-          something about the structure of the Motorola firmware. In
-          particular, it uses a version that has been stripped of the
-          20K of useless header information, and had section lengths
-          added, making it possible to load the entire OS without any
-          [kv]malloc() activity, since the longest entity we ever read is
-          42 bytes (well, WF_SECTION_MAX) long.
-       */
-
-       fs = get_fs();
-       set_fs (get_ds());
+       const struct firmware *firmware;
 
-       if ((fd = sys_open ((char __user *) path, 0, 0)) < 0) {
-               snd_printk ("Unable to load \"%s\".\n",
-                       path);
+       err = request_firmware(&firmware, path, dev->card->dev);
+       if (err < 0) {
+               snd_printk(KERN_ERR "firmware (%s) download failed!!!\n", path);
                return 1;
        }
 
-       while (1) {
-               int x;
-
-               if ((x = sys_read (fd, (char __user *) &section_length, sizeof (section_length))) !=
-                   sizeof (section_length)) {
-                       snd_printk ("firmware read error.\n");
-                       goto failure;
-               }
-
-               if (section_length == 0) {
+       len = 0;
+       buf = firmware->data;
+       for (;;) {
+               int section_length = *(signed char *)buf;
+               if (section_length == 0)
                        break;
-               }
-
                if (section_length < 0 || section_length > WF_SECTION_MAX) {
-                       snd_printk ("invalid firmware section length %d\n",
-                                   section_length);
+                       snd_printk(KERN_ERR
+                                  "invalid firmware section length %d\n",
+                                  section_length);
                        goto failure;
                }
+               buf++;
+               len++;
 
-               if (sys_read (fd, (char __user *) section, section_length) != section_length) {
-                       snd_printk ("firmware section "
-                               "read error.\n");
+               if (firmware->size < len + section_length) {
+                       snd_printk(KERN_ERR "firmware section read error.\n");
                        goto failure;
                }
 
                /* Send command */
-       
-               if (wavefront_write (dev, WFC_DOWNLOAD_OS)) {
+               if (wavefront_write(dev, WFC_DOWNLOAD_OS))
                        goto failure;
-               }
        
-               for (i = 0; i < section_length; i++) {
-                       if (wavefront_write (dev, section[i])) {
+               for (; section_length; section_length--) {
+                       if (wavefront_write(dev, *buf))
                                goto failure;
-                       }
+                       buf++;
+                       len++;
                }
        
                /* get ACK */
-       
-               if (wavefront_wait (dev, STAT_CAN_READ)) {
-
-                       if ((c = inb (dev->data_port)) != WF_ACK) {
-
-                               snd_printk ("download "
-                                           "of section #%d not "
-                                           "acknowledged, ack = 0x%x\n",
-                                           section_cnt_downloaded + 1, c);
-                               goto failure;
-               
-                       }
-
-               } else {
-                       snd_printk ("time out for firmware ACK.\n");
+               if (!wavefront_wait(dev, STAT_CAN_READ)) {
+                       snd_printk(KERN_ERR "time out for firmware ACK.\n");
+                       goto failure;
+               }
+               err = inb(dev->data_port);
+               if (err != WF_ACK) {
+                       snd_printk(KERN_ERR
+                                  "download of section #%d not "
+                                  "acknowledged, ack = 0x%x\n",
+                                  section_cnt_downloaded + 1, err);
                        goto failure;
                }
 
+               section_cnt_downloaded++;
        }
 
-       sys_close (fd);
-       set_fs (fs);
+       release_firmware(firmware);
        return 0;
 
  failure:
-       sys_close (fd);
-       set_fs (fs);
-       snd_printk ("firmware download failed!!!\n");
+       release_firmware(firmware);
+       snd_printk(KERN_ERR "firmware download failed!!!\n");
        return 1;
 }
 
@@ -2232,3 +2196,5 @@ snd_wavefront_detect (snd_wavefront_card_t *card)
 
        return 0;
 }
+
+MODULE_FIRMWARE(DEFAULT_OSPATH);