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 --- sound/soc/mediatek/mtk-afe-common.h | 1 + sound/soc/mediatek/mtk-afe-pcm.c | 24 +++++++++++++++++++++++- 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/sound/soc/mediatek/mtk-afe-common.h b/sound/soc/mediatek/mtk-afe-common.h index 9b1af1a..f341f62 100644 --- a/sound/soc/mediatek/mtk-afe-common.h +++ b/sound/soc/mediatek/mtk-afe-common.h @@ -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 { diff --git a/sound/soc/mediatek/mtk-afe-pcm.c b/sound/soc/mediatek/mtk-afe-pcm.c index 08af9f5..60c38db 100644 --- a/sound/soc/mediatek/mtk-afe-pcm.c +++ b/sound/soc/mediatek/mtk-afe-pcm.c @@ -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 +606,10 @@ 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; + if (sizeof(dma_addr_t) > 4) + msb_at_bit33 = (substream->runtime->dma_addr & 0x100000000) ? 1 : 0; + + memif->phys_buf_addr = substream->runtime->dma_addr & 0xffffffff; memif->buffer_size = substream->runtime->dma_bytes;

/* start */ @@ -614,6 +620,11 @@ 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 +989,7 @@ 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 +1003,7 @@ 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 +1017,7 @@ 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 +1031,7 @@ 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 +1045,7 @@ 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 +1059,7 @@ 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 +1073,7 @@ 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 +1207,10 @@ 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;