alsa: Remove special SBUS dma support code. (759ee81b) · Commits · e / devices / android_kernel_xiaomi_markw

Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl

+1 −2

Original line number	Diff line number	Diff line
		@@ -5073,8 +5073,7 @@ struct _snd_pcm_runtime {
		with <constant>SNDRV_DMA_TYPE_CONTINUOUS</constant> type and the
		<function>snd_dma_continuous_data(GFP_KERNEL)</function> device pointer,
		where <constant>GFP_KERNEL</constant> is the kernel allocation flag to
		use. For the SBUS, <constant>SNDRV_DMA_TYPE_SBUS</constant> and
		<function>snd_dma_sbus_data(sbus_dev)</function> are used instead.
		use.
		For the PCI scatter-gather buffers, use
		<constant>SNDRV_DMA_TYPE_DEV_SG</constant> with
		<function>snd_dma_pci_data(pci)</function>

include/sound/core.h

+0 −3

Original line number	Diff line number	Diff line
		@@ -42,9 +42,6 @@
		#ifdef CONFIG_PCI
		struct pci_dev;
		#endif
		#ifdef CONFIG_SBUS
		struct sbus_dev;
		#endif

		/* device allocation stuff */

include/sound/memalloc.h

+0 −2

Original line number	Diff line number	Diff line
		@@ -37,7 +37,6 @@ struct snd_dma_device {
		#ifndef snd_dma_pci_data
		#define snd_dma_pci_data(pci) (&(pci)->dev)
		#define snd_dma_isa_data() NULL
		#define snd_dma_sbus_data(sbus) ((struct device *)(sbus))
		#define snd_dma_continuous_data(x) ((struct device *)(unsigned long)(x))
		#endif

		@@ -49,7 +48,6 @@ struct snd_dma_device {
		#define SNDRV_DMA_TYPE_CONTINUOUS 1 /* continuous no-DMA memory */
		#define SNDRV_DMA_TYPE_DEV 2 /* generic device continuous */
		#define SNDRV_DMA_TYPE_DEV_SG 3 /* generic device SG-buffer */
		#define SNDRV_DMA_TYPE_SBUS 4 /* SBUS continuous */

		/*
		* info for buffer allocation

sound/core/memalloc.c

+1 −49

Original line number	Diff line number	Diff line
		@@ -33,9 +33,6 @@
		#include <linux/moduleparam.h>
		#include <linux/mutex.h>
		#include <sound/memalloc.h>
		#ifdef CONFIG_SBUS
		#include <asm/sbus.h>
		#endif


		MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>, Jaroslav Kysela <perex@perex.cz>");
		@@ -180,41 +177,6 @@ static void snd_free_dev_pages(struct device dev, size_t size, void ptr,
		}
		#endif /* CONFIG_HAS_DMA */

		#ifdef CONFIG_SBUS

		static void snd_malloc_sbus_pages(struct device dev, size_t size,
		dma_addr_t *dma_addr)
		{
		struct sbus_dev sdev = (struct sbus_dev )dev;
		int pg;
		void *res;

		snd_assert(size > 0, return NULL);
		snd_assert(dma_addr != NULL, return NULL);
		pg = get_order(size);
		res = dma_alloc_coherent(&sdev->ofdev.dev, PAGE_SIZE * (1 << pg),
		dma_addr, GFP_ATOMIC);
		if (res != NULL)
		inc_snd_pages(pg);
		return res;
		}

		static void snd_free_sbus_pages(struct device *dev, size_t size,
		void *ptr, dma_addr_t dma_addr)
		{
		struct sbus_dev sdev = (struct sbus_dev )dev;
		int pg;

		if (ptr == NULL)
		return;
		pg = get_order(size);
		dec_snd_pages(pg);
		dma_free_coherent(&sdev->ofdev.dev, PAGE_SIZE * (1 << pg),
		ptr, dma_addr);
		}

		#endif /* CONFIG_SBUS */

		/*
		*
		* ALSA generic memory management
		@@ -249,11 +211,6 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size,
		dmab->area = snd_malloc_pages(size, (unsigned long)device);
		dmab->addr = 0;
		break;
		#ifdef CONFIG_SBUS
		case SNDRV_DMA_TYPE_SBUS:
		dmab->area = snd_malloc_sbus_pages(device, size, &dmab->addr);
		break;
		#endif
		#ifdef CONFIG_HAS_DMA
		case SNDRV_DMA_TYPE_DEV:
		dmab->area = snd_malloc_dev_pages(device, size, &dmab->addr);
		@@ -322,11 +279,6 @@ void snd_dma_free_pages(struct snd_dma_buffer *dmab)
		case SNDRV_DMA_TYPE_CONTINUOUS:
		snd_free_pages(dmab->area, dmab->bytes);
		break;
		#ifdef CONFIG_SBUS
		case SNDRV_DMA_TYPE_SBUS:
		snd_free_sbus_pages(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);
		break;
		#endif
		#ifdef CONFIG_HAS_DMA
		case SNDRV_DMA_TYPE_DEV:
		snd_free_dev_pages(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);
		@@ -433,7 +385,7 @@ static int snd_mem_proc_read(struct seq_file seq, void offset)
		long pages = snd_allocated_pages >> (PAGE_SHIFT-12);
		struct snd_mem_list *mem;
		int devno;
		static char *types[] = { "UNKNOWN", "CONT", "DEV", "DEV-SG", "SBUS" };
		static char *types[] = { "UNKNOWN", "CONT", "DEV", "DEV-SG" };

		mutex_lock(&list_mutex);
		seq_printf(seq, "pages : %li bytes (%li pages per %likB)\n",