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authorDavid Woodhouse <dwmw2@infradead.org>2008-05-29 14:40:00 +0300
committerDavid Woodhouse <David.Woodhouse@intel.com>2008-07-10 14:26:40 +0100
commitb82a82d0a90af74847ae3e873a241dedf3786fd5 (patch)
treee00019c018a1a5790d4a31a4c5ef4e41501bbf0d
parentfa6e1cb66e2f9d2d4703e7bd7dd50839bb10e4c3 (diff)
ymfpci: treat firmware data as const
Standardise both in-kernel and loaded firmware to be stored as little-endian instead of host-endian. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
-rw-r--r--sound/pci/ymfpci/ymfpci_main.c59
1 files changed, 34 insertions, 25 deletions
diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index 29b3056c510..6298b29c66b 100644
--- a/sound/pci/ymfpci/ymfpci_main.c
+++ b/sound/pci/ymfpci/ymfpci_main.c
@@ -26,6 +26,7 @@
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
+#include <linux/mutex.h>
#include <sound/core.h>
#include <sound/control.h>
@@ -2009,11 +2010,34 @@ static struct firmware snd_ymfpci_controller_1e_microcode = {
.size = YDSXG_CTRLLENGTH,
.data = (u8 *)CntrlInst1E,
};
+
+#ifdef __BIG_ENDIAN
+static int microcode_swapped;
+static DEFINE_MUTEX(microcode_swap);
+
+static void snd_ymfpci_convert_to_le(const struct firmware *fw)
+{
+ int i;
+ u32 *data = (u32 *)fw->data;
+
+ for (i = 0; i < fw->size / 4; ++i)
+ cpu_to_le32s(&data[i]);
+}
#endif
-#ifdef CONFIG_SND_YMFPCI_FIRMWARE_IN_KERNEL
static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip)
{
+#ifdef __BIG_ENDIAN
+ mutex_lock(&microcode_swap);
+ if (!microcode_swapped) {
+ snd_ymfpci_convert_to_le(&snd_ymfpci_dsp_microcode);
+ snd_ymfpci_convert_to_le(&snd_ymfpci_controller_1e_microcode);
+ snd_ymfpci_convert_to_le(&snd_ymfpci_controller_microcode);
+ microcode_swapped = 1;
+ }
+ mutex_unlock(&microcode_swap);
+#endif
+
chip->dsp_microcode = &snd_ymfpci_dsp_microcode;
if (chip->device_id == PCI_DEVICE_ID_YAMAHA_724F ||
chip->device_id == PCI_DEVICE_ID_YAMAHA_740C ||
@@ -2029,19 +2053,6 @@ static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip)
#else /* use fw_loader */
-#ifdef __LITTLE_ENDIAN
-static inline void snd_ymfpci_convert_from_le(const struct firmware *fw) { }
-#else
-static void snd_ymfpci_convert_from_le(const struct firmware *fw)
-{
- int i;
- u32 *data = (u32 *)fw->data;
-
- for (i = 0; i < fw->size / 4; ++i)
- le32_to_cpus(&data[i]);
-}
-#endif
-
static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip)
{
int err, is_1e;
@@ -2050,9 +2061,7 @@ static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip)
err = request_firmware(&chip->dsp_microcode, "yamaha/ds1_dsp.fw",
&chip->pci->dev);
if (err >= 0) {
- if (chip->dsp_microcode->size == YDSXG_DSPLENGTH)
- snd_ymfpci_convert_from_le(chip->dsp_microcode);
- else {
+ if (chip->dsp_microcode->size != YDSXG_DSPLENGTH) {
snd_printk(KERN_ERR "DSP microcode has wrong size\n");
err = -EINVAL;
}
@@ -2067,9 +2076,7 @@ static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip)
err = request_firmware(&chip->controller_microcode, name,
&chip->pci->dev);
if (err >= 0) {
- if (chip->controller_microcode->size == YDSXG_CTRLLENGTH)
- snd_ymfpci_convert_from_le(chip->controller_microcode);
- else {
+ if (chip->controller_microcode->size != YDSXG_CTRLLENGTH) {
snd_printk(KERN_ERR "controller microcode"
" has wrong size\n");
err = -EINVAL;
@@ -2090,7 +2097,7 @@ static void snd_ymfpci_download_image(struct snd_ymfpci *chip)
{
int i;
u16 ctrl;
- u32 *inst;
+ const __le32 *inst;
snd_ymfpci_writel(chip, YDSXGR_NATIVEDACOUTVOL, 0x00000000);
snd_ymfpci_disable_dsp(chip);
@@ -2105,14 +2112,16 @@ static void snd_ymfpci_download_image(struct snd_ymfpci *chip)
snd_ymfpci_writew(chip, YDSXGR_GLOBALCTRL, ctrl & ~0x0007);
/* setup DSP instruction code */
- inst = (u32 *)chip->dsp_microcode->data;
+ inst = (const __le32 *)chip->dsp_microcode->data;
for (i = 0; i < YDSXG_DSPLENGTH / 4; i++)
- snd_ymfpci_writel(chip, YDSXGR_DSPINSTRAM + (i << 2), inst[i]);
+ snd_ymfpci_writel(chip, YDSXGR_DSPINSTRAM + (i << 2),
+ le32_to_cpu(inst[i]));
/* setup control instruction code */
- inst = (u32 *)chip->controller_microcode->data;
+ inst = (const __le32 *)chip->controller_microcode->data;
for (i = 0; i < YDSXG_CTRLLENGTH / 4; i++)
- snd_ymfpci_writel(chip, YDSXGR_CTRLINSTRAM + (i << 2), inst[i]);
+ snd_ymfpci_writel(chip, YDSXGR_CTRLINSTRAM + (i << 2),
+ le32_to_cpu(inst[i]));
snd_ymfpci_enable_dsp(chip);
}