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authorGiuliano Pochini <pochini@shiny.it>2010-02-14 20:15:51 +0300
committerTakashi Iwai <tiwai@suse.de>2010-02-15 12:38:10 +0300
commit4f8ada444cc7a7ea70cdc81f098b34c5f1f2df41 (patch)
treeded4e81a8e822ee43bdcaab71084c7b0bd58701f /sound/pci/echoaudio
parent19b50063780953563e3c3a2867c39aad7b9e64cf (diff)
downloadlinux-4f8ada444cc7a7ea70cdc81f098b34c5f1f2df41.tar.xz
ALSA: Echoaudio - Add firmware cache #2
This patch implements a simple cache for the firmware files when CONFIG_PM is defined. This patch changes get_firmware(), free_firmware() and adds free_firmware_cache(). The first two functions implement a very simple cache and the latter is used to actually release all the stored firmwares when the module is unloaded. When CONFIG_PM is not enabled those functions act as before, that is free_firmware() releases the firmware immediately and free_firmware_cache() does nothing. Signed-off-by: Giuliano Pochini <pochini@shiny.it> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/echoaudio')
-rw-r--r--sound/pci/echoaudio/echoaudio.c42
-rw-r--r--sound/pci/echoaudio/echoaudio.h3
2 files changed, 41 insertions, 4 deletions
diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 78fc2637bfa6..79dde9592847 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -43,12 +43,24 @@ static int get_firmware(const struct firmware **fw_entry,
{
int err;
char name[30];
- const struct firmware *frm = &card_fw[fw_index];
- DE_ACT(("firmware requested: %s\n", frm->data));
- snprintf(name, sizeof(name), "ea/%s", frm->data);
- if ((err = request_firmware(fw_entry, name, pci_device(chip))) < 0)
+#ifdef CONFIG_PM
+ if (chip->fw_cache[fw_index]) {
+ DE_ACT(("firmware requested: %s is cached\n", card_fw[fw_index].data));
+ *fw_entry = chip->fw_cache[fw_index];
+ return 0;
+ }
+#endif
+
+ DE_ACT(("firmware requested: %s\n", card_fw[fw_index].data));
+ snprintf(name, sizeof(name), "ea/%s", card_fw[fw_index].data);
+ err = request_firmware(fw_entry, name, pci_device(chip));
+ if (err < 0)
snd_printk(KERN_ERR "get_firmware(): Firmware not available (%d)\n", err);
+#ifdef CONFIG_PM
+ else
+ chip->fw_cache[fw_index] = *fw_entry;
+#endif
return err;
}
@@ -56,8 +68,29 @@ static int get_firmware(const struct firmware **fw_entry,
static void free_firmware(const struct firmware *fw_entry)
{
+#ifdef CONFIG_PM
+ DE_ACT(("firmware not released (kept in cache)\n"));
+#else
release_firmware(fw_entry);
DE_ACT(("firmware released\n"));
+#endif
+}
+
+
+
+static void free_firmware_cache(struct echoaudio *chip)
+{
+#ifdef CONFIG_PM
+ int i;
+
+ for (i = 0; i < 8 ; i++)
+ if (chip->fw_cache[i]) {
+ release_firmware(chip->fw_cache[i]);
+ DE_ACT(("release_firmware(%d)\n", i));
+ }
+
+ DE_ACT(("firmware_cache released\n"));
+#endif
}
@@ -1880,6 +1913,7 @@ static int snd_echo_free(struct echoaudio *chip)
pci_disable_device(chip->pci);
/* release chip data */
+ free_firmware_cache(chip);
kfree(chip);
DE_INIT(("Chip freed.\n"));
return 0;
diff --git a/sound/pci/echoaudio/echoaudio.h b/sound/pci/echoaudio/echoaudio.h
index be76ef3b829a..a84c0d15cc50 100644
--- a/sound/pci/echoaudio/echoaudio.h
+++ b/sound/pci/echoaudio/echoaudio.h
@@ -449,6 +449,9 @@ struct echoaudio {
volatile u32 __iomem *dsp_registers; /* DSP's register base */
u32 active_mask; /* Chs. active mask or
* punks out */
+#ifdef CONFIG_PM
+ const struct firmware *fw_cache[8]; /* Cached firmwares */
+#endif
#ifdef ECHOCARD_HAS_MIDI
u16 mtc_state; /* State for MIDI input parsing state machine */