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ASoC: mediatek: Enable 33bit memory address to support 4GB DRAM

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If platform is embedded with memory more than 3GB, the address will
go out of the scope that 32-bit can handle with. This patch sets the
dma_mask and MSB properly to describe its address to 33-bit.

Signed-off-by: Hidalgo Huang <hidalgo.huang@mediatek.com>
Signed-off-by: PC Liao <pc.liao@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
PC Liao 2016-01-12 14:33:42 +08:00 committed by Mark Brown
parent c1f2a34284
commit fcde5a7eca
2 changed files with 22 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
sound/soc/mediatek/mtk-afe-common.h
View File

@ -87,6 +87,7 @@ struct mtk_afe_memif_data {
int irq_en_shift;
int irq_fs_shift;
int irq_clr_shift;
int msb_shift;
};
struct mtk_afe_memif {

22
sound/soc/mediatek/mtk-afe-pcm.c
View File

@ -21,6 +21,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <sound/soc.h>
#include "mtk-afe-common.h"
@ -35,6 +36,7 @@
#define AFE_I2S_CON1 0x0034
#define AFE_I2S_CON2 0x0038
#define AFE_CONN_24BIT 0x006c
#define AFE_MEMIF_MSB 0x00cc
#define AFE_CONN1 0x0024
#define AFE_CONN2 0x0028
@ -592,6 +594,7 @@ static int mtk_afe_dais_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
struct mtk_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
int msb_at_bit33 = 0;
int ret;
dev_dbg(afe->dev,
@ -603,7 +606,8 @@ static int mtk_afe_dais_hw_params(struct snd_pcm_substream *substream,
if (ret < 0)
return ret;
memif->phys_buf_addr = substream->runtime->dma_addr;
msb_at_bit33 = upper_32_bits(substream->runtime->dma_addr) ? 1 : 0;
memif->phys_buf_addr = lower_32_bits(substream->runtime->dma_addr);
memif->buffer_size = substream->runtime->dma_bytes;
/* start */
@ -614,6 +618,11 @@ static int mtk_afe_dais_hw_params(struct snd_pcm_substream *substream,
memif->data->reg_ofs_base + AFE_BASE_END_OFFSET,
memif->phys_buf_addr + memif->buffer_size - 1);
/* set MSB to 33-bit */
regmap_update_bits(afe->regmap, AFE_MEMIF_MSB,
1 << memif->data->msb_shift,
msb_at_bit33 << memif->data->msb_shift);
/* set channel */
if (memif->data->mono_shift >= 0) {
unsigned int mono = (params_channels(params) == 1) ? 1 : 0;
@ -978,6 +987,7 @@ static const struct mtk_afe_memif_data memif_data[MTK_AFE_MEMIF_NUM] = {
.irq_en_shift = 0,
.irq_fs_shift = 4,
.irq_clr_shift = 0,
.msb_shift = 0,
}, {
.name = "DL2",
.id = MTK_AFE_MEMIF_DL2,
@ -991,6 +1001,7 @@ static const struct mtk_afe_memif_data memif_data[MTK_AFE_MEMIF_NUM] = {
.irq_en_shift = 2,
.irq_fs_shift = 16,
.irq_clr_shift = 2,
.msb_shift = 1,
}, {
.name = "VUL",
.id = MTK_AFE_MEMIF_VUL,
@ -1004,6 +1015,7 @@ static const struct mtk_afe_memif_data memif_data[MTK_AFE_MEMIF_NUM] = {
.irq_en_shift = 1,
.irq_fs_shift = 8,
.irq_clr_shift = 1,
.msb_shift = 6,
}, {
.name = "DAI",
.id = MTK_AFE_MEMIF_DAI,
@ -1017,6 +1029,7 @@ static const struct mtk_afe_memif_data memif_data[MTK_AFE_MEMIF_NUM] = {
.irq_en_shift = 3,
.irq_fs_shift = 20,
.irq_clr_shift = 3,
.msb_shift = 5,
}, {
.name = "AWB",
.id = MTK_AFE_MEMIF_AWB,
@ -1030,6 +1043,7 @@ static const struct mtk_afe_memif_data memif_data[MTK_AFE_MEMIF_NUM] = {
.irq_en_shift = 14,
.irq_fs_shift = 24,
.irq_clr_shift = 6,
.msb_shift = 3,
}, {
.name = "MOD_DAI",
.id = MTK_AFE_MEMIF_MOD_DAI,
@ -1043,6 +1057,7 @@ static const struct mtk_afe_memif_data memif_data[MTK_AFE_MEMIF_NUM] = {
.irq_en_shift = 3,
.irq_fs_shift = 20,
.irq_clr_shift = 3,
.msb_shift = 4,
}, {
.name = "HDMI",
.id = MTK_AFE_MEMIF_HDMI,
@ -1056,6 +1071,7 @@ static const struct mtk_afe_memif_data memif_data[MTK_AFE_MEMIF_NUM] = {
.irq_en_shift = 12,
.irq_fs_shift = -1,
.irq_clr_shift = 4,
.msb_shift = 8,
},
};
@ -1189,6 +1205,10 @@ static int mtk_afe_pcm_dev_probe(struct platform_device *pdev)
struct mtk_afe *afe;
struct resource *res;
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(33));
if (ret)
return ret;
afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL);
if (!afe)
return -ENOMEM;