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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-20 09:41:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-20 09:41:44 -0700
commit7f06a8b26aba1dc03b42272dc0089a800372c575 (patch)
tree7c67198f83d069eb13fd417e022d111b7e4c82a1 /sound/pci/asihpi/hpios.c
parentc3ad33c9bcb6616999953af76f16318120fe3691 (diff)
parentd71f4cece4bd97d05592836202fc04ff2e7817e3 (diff)
downloadblackbird-op-linux-7f06a8b26aba1dc03b42272dc0089a800372c575.tar.gz
blackbird-op-linux-7f06a8b26aba1dc03b42272dc0089a800372c575.zip
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (250 commits) ALSA: hda: Storage class should be before const qualifier ASoC: tpa6130a2: Remove CPVSS and HPVdd supplies ASoC: tpa6130a2: Define output pins with SND_SOC_DAPM_OUTPUT ASoC: sdp4430 - add sdp4430 pcm ops to DAI. ASoC: TWL6040: Enable earphone path in codec ASoC: SDP4430: Add support for Earphone speaker ASoC: SDP4430: Add sdp4430 machine driver ASoC: tlv320dac33: Avoid powering off while in BIAS_OFF ASoC: tlv320dac33: Use dev_dbg in dac33_hard_power function ALSA: sound/pci/asihpi: Use kzalloc ALSA: hdmi - dont fail on extra nodes ALSA: intelhdmi - add id for the CougarPoint chipset ALSA: intelhdmi - user friendly codec name ALSA: intelhdmi - add dependency on SND_DYNAMIC_MINORS ALSA: asihpi: incorrect range check ALSA: asihpi: testing the wrong variable ALSA: es1688: add pedantic range checks ARM: McBSP: Add support for omap4 in McBSP driver ARM: McBSP: Fix request for irq in OMAP4 OMAP: McBSP: Add 32-bit mode support ...
Diffstat (limited to 'sound/pci/asihpi/hpios.c')
-rw-r--r--sound/pci/asihpi/hpios.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/sound/pci/asihpi/hpios.c b/sound/pci/asihpi/hpios.c
new file mode 100644
index 000000000000..de615cfdb950
--- /dev/null
+++ b/sound/pci/asihpi/hpios.c
@@ -0,0 +1,114 @@
+/******************************************************************************
+
+ AudioScience HPI driver
+ Copyright (C) 1997-2010 AudioScience Inc. <support@audioscience.com>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation;
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+HPI Operating System function implementation for Linux
+
+(C) Copyright AudioScience Inc. 1997-2003
+******************************************************************************/
+#define SOURCEFILE_NAME "hpios.c"
+#include "hpi_internal.h"
+#include "hpidebug.h"
+#include <linux/delay.h>
+#include <linux/sched.h>
+
+void hpios_delay_micro_seconds(u32 num_micro_sec)
+{
+ if ((usecs_to_jiffies(num_micro_sec) > 1) && !in_interrupt()) {
+ /* MUST NOT SCHEDULE IN INTERRUPT CONTEXT! */
+ schedule_timeout_uninterruptible(usecs_to_jiffies
+ (num_micro_sec));
+ } else if (num_micro_sec <= 2000)
+ udelay(num_micro_sec);
+ else
+ mdelay(num_micro_sec / 1000);
+
+}
+
+void hpios_locked_mem_init(void)
+{
+}
+
+/** Allocated an area of locked memory for bus master DMA operations.
+
+On error, return -ENOMEM, and *pMemArea.size = 0
+*/
+u16 hpios_locked_mem_alloc(struct consistent_dma_area *p_mem_area, u32 size,
+ struct pci_dev *pdev)
+{
+ /*?? any benefit in using managed dmam_alloc_coherent? */
+ p_mem_area->vaddr =
+ dma_alloc_coherent(&pdev->dev, size, &p_mem_area->dma_handle,
+ GFP_DMA32 | GFP_KERNEL);
+
+ if (p_mem_area->vaddr) {
+ HPI_DEBUG_LOG(DEBUG, "allocated %d bytes, dma 0x%x vma %p\n",
+ size, (unsigned int)p_mem_area->dma_handle,
+ p_mem_area->vaddr);
+ p_mem_area->pdev = &pdev->dev;
+ p_mem_area->size = size;
+ return 0;
+ } else {
+ HPI_DEBUG_LOG(WARNING,
+ "failed to allocate %d bytes locked memory\n", size);
+ p_mem_area->size = 0;
+ return -ENOMEM;
+ }
+}
+
+u16 hpios_locked_mem_free(struct consistent_dma_area *p_mem_area)
+{
+ if (p_mem_area->size) {
+ dma_free_coherent(p_mem_area->pdev, p_mem_area->size,
+ p_mem_area->vaddr, p_mem_area->dma_handle);
+ HPI_DEBUG_LOG(DEBUG, "freed %lu bytes, dma 0x%x vma %p\n",
+ (unsigned long)p_mem_area->size,
+ (unsigned int)p_mem_area->dma_handle,
+ p_mem_area->vaddr);
+ p_mem_area->size = 0;
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+void hpios_locked_mem_free_all(void)
+{
+}
+
+void __iomem *hpios_map_io(struct pci_dev *pci_dev, int idx,
+ unsigned int length)
+{
+ HPI_DEBUG_LOG(DEBUG, "mapping %d %s %08llx-%08llx %04llx len 0x%x\n",
+ idx, pci_dev->resource[idx].name,
+ (unsigned long long)pci_resource_start(pci_dev, idx),
+ (unsigned long long)pci_resource_end(pci_dev, idx),
+ (unsigned long long)pci_resource_flags(pci_dev, idx), length);
+
+ if (!(pci_resource_flags(pci_dev, idx) & IORESOURCE_MEM)) {
+ HPI_DEBUG_LOG(ERROR, "not an io memory resource\n");
+ return NULL;
+ }
+
+ if (length > pci_resource_len(pci_dev, idx)) {
+ HPI_DEBUG_LOG(ERROR, "resource too small for requested %d \n",
+ length);
+ return NULL;
+ }
+
+ return ioremap(pci_resource_start(pci_dev, idx), length);
+}
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