aboutsummaryrefslogtreecommitdiff
path: root/sound/core
diff options
context:
space:
mode:
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/misc.c32
-rw-r--r--sound/core/pcm_lib.c20
-rw-r--r--sound/core/pcm_memory.c55
-rw-r--r--sound/core/pcm_native.c8
4 files changed, 103 insertions, 12 deletions
diff --git a/sound/core/misc.c b/sound/core/misc.c
index 23a032c6d48..3da4f92427d 100644
--- a/sound/core/misc.c
+++ b/sound/core/misc.c
@@ -101,8 +101,9 @@ EXPORT_SYMBOL_GPL(__snd_printk);
#ifdef CONFIG_PCI
#include <linux/pci.h>
/**
- * snd_pci_quirk_lookup - look up a PCI SSID quirk list
- * @pci: pci_dev handle
+ * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
+ * @vendor: PCI SSV id
+ * @device: PCI SSD id
* @list: quirk list, terminated by a null entry
*
* Look through the given quirk list and finds a matching entry
@@ -112,18 +113,39 @@ EXPORT_SYMBOL_GPL(__snd_printk);
* Returns the matched entry pointer, or NULL if nothing matched.
*/
const struct snd_pci_quirk *
-snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
+snd_pci_quirk_lookup_id(u16 vendor, u16 device,
+ const struct snd_pci_quirk *list)
{
const struct snd_pci_quirk *q;
for (q = list; q->subvendor; q++) {
- if (q->subvendor != pci->subsystem_vendor)
+ if (q->subvendor != vendor)
continue;
if (!q->subdevice ||
- (pci->subsystem_device & q->subdevice_mask) == q->subdevice)
+ (device & q->subdevice_mask) == q->subdevice)
return q;
}
return NULL;
}
+EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
+
+/**
+ * snd_pci_quirk_lookup - look up a PCI SSID quirk list
+ * @pci: pci_dev handle
+ * @list: quirk list, terminated by a null entry
+ *
+ * Look through the given quirk list and finds a matching entry
+ * with the same PCI SSID. When subdevice is 0, all subdevice
+ * values may match.
+ *
+ * Returns the matched entry pointer, or NULL if nothing matched.
+ */
+const struct snd_pci_quirk *
+snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
+{
+ return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
+ pci->subsystem_device,
+ list);
+}
EXPORT_SYMBOL(snd_pci_quirk_lookup);
#endif
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 5417f7dce83..72001956079 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -763,10 +763,13 @@ int snd_interval_ratnum(struct snd_interval *i,
unsigned int rats_count, struct snd_ratnum *rats,
unsigned int *nump, unsigned int *denp)
{
- unsigned int best_num, best_diff, best_den;
+ unsigned int best_num, best_den;
+ int best_diff;
unsigned int k;
struct snd_interval t;
int err;
+ unsigned int result_num, result_den;
+ int result_diff;
best_num = best_den = best_diff = 0;
for (k = 0; k < rats_count; ++k) {
@@ -788,6 +791,8 @@ int snd_interval_ratnum(struct snd_interval *i,
den -= r;
}
diff = num - q * den;
+ if (diff < 0)
+ diff = -diff;
if (best_num == 0 ||
diff * best_den < best_diff * den) {
best_diff = diff;
@@ -802,6 +807,9 @@ int snd_interval_ratnum(struct snd_interval *i,
t.min = div_down(best_num, best_den);
t.openmin = !!(best_num % best_den);
+ result_num = best_num;
+ result_diff = best_diff;
+ result_den = best_den;
best_num = best_den = best_diff = 0;
for (k = 0; k < rats_count; ++k) {
unsigned int num = rats[k].num;
@@ -824,6 +832,8 @@ int snd_interval_ratnum(struct snd_interval *i,
den += rats[k].den_step - r;
}
diff = q * den - num;
+ if (diff < 0)
+ diff = -diff;
if (best_num == 0 ||
diff * best_den < best_diff * den) {
best_diff = diff;
@@ -843,10 +853,14 @@ int snd_interval_ratnum(struct snd_interval *i,
return err;
if (snd_interval_single(i)) {
+ if (best_diff * result_den < result_diff * best_den) {
+ result_num = best_num;
+ result_den = best_den;
+ }
if (nump)
- *nump = best_num;
+ *nump = result_num;
if (denp)
- *denp = best_den;
+ *denp = result_den;
}
return err;
}
diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c
index caa7796bc2f..d6d49d6651f 100644
--- a/sound/core/pcm_memory.c
+++ b/sound/core/pcm_memory.c
@@ -23,6 +23,7 @@
#include <linux/time.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
+#include <linux/vmalloc.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/info.h>
@@ -434,3 +435,57 @@ int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream)
}
EXPORT_SYMBOL(snd_pcm_lib_free_pages);
+
+int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream,
+ size_t size, gfp_t gfp_flags)
+{
+ struct snd_pcm_runtime *runtime;
+
+ if (PCM_RUNTIME_CHECK(substream))
+ return -EINVAL;
+ runtime = substream->runtime;
+ if (runtime->dma_area) {
+ if (runtime->dma_bytes >= size)
+ return 0; /* already large enough */
+ vfree(runtime->dma_area);
+ }
+ runtime->dma_area = __vmalloc(size, gfp_flags, PAGE_KERNEL);
+ if (!runtime->dma_area)
+ return -ENOMEM;
+ runtime->dma_bytes = size;
+ return 1;
+}
+EXPORT_SYMBOL(_snd_pcm_lib_alloc_vmalloc_buffer);
+
+/**
+ * snd_pcm_lib_free_vmalloc_buffer - free vmalloc buffer
+ * @substream: the substream with a buffer allocated by
+ * snd_pcm_lib_alloc_vmalloc_buffer()
+ */
+int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime;
+
+ if (PCM_RUNTIME_CHECK(substream))
+ return -EINVAL;
+ runtime = substream->runtime;
+ vfree(runtime->dma_area);
+ runtime->dma_area = NULL;
+ return 0;
+}
+EXPORT_SYMBOL(snd_pcm_lib_free_vmalloc_buffer);
+
+/**
+ * snd_pcm_lib_get_vmalloc_page - map vmalloc buffer offset to page struct
+ * @substream: the substream with a buffer allocated by
+ * snd_pcm_lib_alloc_vmalloc_buffer()
+ * @offset: offset in the buffer
+ *
+ * This function is to be used as the page callback in the PCM ops.
+ */
+struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream,
+ unsigned long offset)
+{
+ return vmalloc_to_page(substream->runtime->dma_area + offset);
+}
+EXPORT_SYMBOL(snd_pcm_lib_get_vmalloc_page);
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 27284f62836..a870fe69657 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -1918,13 +1918,13 @@ int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE,
hw->rate_min, hw->rate_max);
- if (err < 0)
- return err;
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
hw->period_bytes_min, hw->period_bytes_max);
- if (err < 0)
- return err;
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS,
hw->periods_min, hw->periods_max);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-16 19:24:51 +0000