/* * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 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. * * lpass.h - Definitions for the QTi LPASS */ #ifndef __LPASS_H__ #define __LPASS_H__ #include #include #include #include #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 { /* AHB-I/X bus clocks inside the low-power audio subsystem (LPASS) */ struct clk *ahbix_clk; /* MI2S system clock */ struct clk *mi2s_osr_clk[LPASS_MAX_MI2S_PORTS]; /* MI2S bit clock (derived from system clock by a divider */ struct clk *mi2s_bit_clk[LPASS_MAX_MI2S_PORTS]; /* low-power audio interface (LPAIF) registers */ void __iomem *lpaif; /* regmap backed by the low-power audio interface (LPAIF) registers */ struct regmap *lpaif_map; /* 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 dma_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; u32 wrdma_reg_base; u32 wrdma_reg_stride; u32 wrdma_channels; /** * on SOCs like APQ8016 the channel control bits start * at different offset to ipq806x **/ u32 dmactl_audif_start; u32 wrdma_channel_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 direction); 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__ */ de3f3d7593076'>sound/soc/codecs/wm8900.c

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