diff options
Diffstat (limited to 'kernel/sound/soc/qcom/lpass.h')
| -rw-r--r-- | kernel/sound/soc/qcom/lpass.h | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/kernel/sound/soc/qcom/lpass.h b/kernel/sound/soc/qcom/lpass.h index 5c99b3dac..0b63e2e5b 100644 --- a/kernel/sound/soc/qcom/lpass.h +++ b/kernel/sound/soc/qcom/lpass.h @@ -22,6 +22,8 @@ #include <linux/regmap.h> #define LPASS_AHBIX_CLOCK_FREQUENCY 131072000 +#define LPASS_MAX_MI2S_PORTS (8) +#define LPASS_MAX_DMA_CHANNELS (8) /* Both the CPU DAI and platform drivers will access this data */ struct lpass_data { @@ -30,10 +32,10 @@ struct lpass_data { struct clk *ahbix_clk; /* MI2S system clock */ - struct clk *mi2s_osr_clk; + struct clk *mi2s_osr_clk[LPASS_MAX_MI2S_PORTS]; /* MI2S bit clock (derived from system clock by a divider */ - struct clk *mi2s_bit_clk; + struct clk *mi2s_bit_clk[LPASS_MAX_MI2S_PORTS]; /* low-power audio interface (LPAIF) registers */ void __iomem *lpaif; @@ -43,9 +45,54 @@ struct lpass_data { /* interrupts from the low-power audio interface (LPAIF) */ int lpaif_irq; + + /* SOC specific variations in the LPASS IP integration */ + struct lpass_variant *variant; + + /* bit map to keep track of static channel allocations */ + unsigned long rdma_ch_bit_map; + + /* used it for handling interrupt per dma channel */ + struct snd_pcm_substream *substream[LPASS_MAX_DMA_CHANNELS]; + + /* 8016 specific */ + struct clk *pcnoc_mport_clk; + struct clk *pcnoc_sway_clk; +}; + +/* Vairant data per each SOC */ +struct lpass_variant { + u32 i2sctrl_reg_base; + u32 i2sctrl_reg_stride; + u32 i2s_ports; + u32 irq_reg_base; + u32 irq_reg_stride; + u32 irq_ports; + u32 rdma_reg_base; + u32 rdma_reg_stride; + u32 rdma_channels; + + /** + * on SOCs like APQ8016 the channel control bits start + * at different offset to ipq806x + **/ + u32 rdmactl_audif_start; + /* SOC specific intialization like clocks */ + int (*init)(struct platform_device *pdev); + int (*exit)(struct platform_device *pdev); + int (*alloc_dma_channel)(struct lpass_data *data); + int (*free_dma_channel)(struct lpass_data *data, int ch); + + /* SOC specific dais */ + struct snd_soc_dai_driver *dai_driver; + int num_dai; }; /* register the platform driver from the CPU DAI driver */ int asoc_qcom_lpass_platform_register(struct platform_device *); +int asoc_qcom_lpass_cpu_platform_remove(struct platform_device *pdev); +int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev); +int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai); +extern const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops; #endif /* __LPASS_H__ */ |