1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2010-2011,2013-2015,2020 The Linux Foundation. All rights reserved. 4 * 5 * lpass.h - Definitions for the QTi LPASS 6 */ 7 8 #ifndef __LPASS_H__ 9 #define __LPASS_H__ 10 11 #include <linux/clk.h> 12 #include <linux/compiler.h> 13 #include <linux/platform_device.h> 14 #include <linux/regmap.h> 15 #include <dt-bindings/sound/qcom,lpass.h> 16 #include "lpass-hdmi.h" 17 18 #define LPASS_AHBIX_CLOCK_FREQUENCY 131072000 19 #define LPASS_MAX_MI2S_PORTS (8) 20 #define LPASS_MAX_DMA_CHANNELS (8) 21 #define LPASS_MAX_HDMI_DMA_CHANNELS (4) 22 23 #define QCOM_REGMAP_FIELD_ALLOC(d, m, f, mf) \ 24 do { \ 25 mf = devm_regmap_field_alloc(d, m, f); \ 26 if (IS_ERR(mf)) \ 27 return -EINVAL; \ 28 } while (0) 29 30 struct lpaif_i2sctl { 31 struct regmap_field *loopback; 32 struct regmap_field *spken; 33 struct regmap_field *spkmode; 34 struct regmap_field *spkmono; 35 struct regmap_field *micen; 36 struct regmap_field *micmode; 37 struct regmap_field *micmono; 38 struct regmap_field *wssrc; 39 struct regmap_field *bitwidth; 40 }; 41 42 43 struct lpaif_dmactl { 44 struct regmap_field *intf; 45 struct regmap_field *bursten; 46 struct regmap_field *wpscnt; 47 struct regmap_field *fifowm; 48 struct regmap_field *enable; 49 struct regmap_field *dyncclk; 50 struct regmap_field *burst8; 51 struct regmap_field *burst16; 52 struct regmap_field *dynburst; 53 }; 54 55 /* Both the CPU DAI and platform drivers will access this data */ 56 struct lpass_data { 57 58 /* AHB-I/X bus clocks inside the low-power audio subsystem (LPASS) */ 59 struct clk *ahbix_clk; 60 61 /* MI2S system clock */ 62 struct clk *mi2s_osr_clk[LPASS_MAX_MI2S_PORTS]; 63 64 /* MI2S bit clock (derived from system clock by a divider */ 65 struct clk *mi2s_bit_clk[LPASS_MAX_MI2S_PORTS]; 66 67 /* MI2S SD lines to use for playback/capture */ 68 unsigned int mi2s_playback_sd_mode[LPASS_MAX_MI2S_PORTS]; 69 unsigned int mi2s_capture_sd_mode[LPASS_MAX_MI2S_PORTS]; 70 71 /* The state of MI2S prepare dai_ops was called */ 72 bool mi2s_was_prepared[LPASS_MAX_MI2S_PORTS]; 73 74 int hdmi_port_enable; 75 76 /* low-power audio interface (LPAIF) registers */ 77 void __iomem *lpaif; 78 void __iomem *hdmiif; 79 80 /* regmap backed by the low-power audio interface (LPAIF) registers */ 81 struct regmap *lpaif_map; 82 struct regmap *hdmiif_map; 83 84 /* interrupts from the low-power audio interface (LPAIF) */ 85 int lpaif_irq; 86 int hdmiif_irq; 87 /* SOC specific variations in the LPASS IP integration */ 88 struct lpass_variant *variant; 89 90 /* bit map to keep track of static channel allocations */ 91 unsigned long dma_ch_bit_map; 92 unsigned long hdmi_dma_ch_bit_map; 93 94 /* used it for handling interrupt per dma channel */ 95 struct snd_pcm_substream *substream[LPASS_MAX_DMA_CHANNELS]; 96 struct snd_pcm_substream *hdmi_substream[LPASS_MAX_HDMI_DMA_CHANNELS]; 97 98 /* SOC specific clock list */ 99 struct clk_bulk_data *clks; 100 int num_clks; 101 102 /* Regmap fields of I2SCTL & DMACTL registers bitfields */ 103 struct lpaif_i2sctl *i2sctl; 104 struct lpaif_dmactl *rd_dmactl; 105 struct lpaif_dmactl *wr_dmactl; 106 struct lpaif_dmactl *hdmi_rd_dmactl; 107 /* Regmap fields of HDMI_CTRL registers*/ 108 struct regmap_field *hdmitx_legacy_en; 109 struct regmap_field *hdmitx_parity_calc_en; 110 struct regmap_field *hdmitx_ch_msb[LPASS_MAX_HDMI_DMA_CHANNELS]; 111 struct regmap_field *hdmitx_ch_lsb[LPASS_MAX_HDMI_DMA_CHANNELS]; 112 struct lpass_hdmi_tx_ctl *tx_ctl; 113 struct lpass_vbit_ctrl *vbit_ctl; 114 struct lpass_hdmitx_dmactl *hdmi_tx_dmactl[LPASS_MAX_HDMI_DMA_CHANNELS]; 115 struct lpass_dp_metadata_ctl *meta_ctl; 116 struct lpass_sstream_ctl *sstream_ctl; 117 }; 118 119 /* Vairant data per each SOC */ 120 struct lpass_variant { 121 u32 irq_reg_base; 122 u32 irq_reg_stride; 123 u32 irq_ports; 124 u32 rdma_reg_base; 125 u32 rdma_reg_stride; 126 u32 rdma_channels; 127 u32 hdmi_rdma_reg_base; 128 u32 hdmi_rdma_reg_stride; 129 u32 hdmi_rdma_channels; 130 u32 wrdma_reg_base; 131 u32 wrdma_reg_stride; 132 u32 wrdma_channels; 133 u32 i2sctrl_reg_base; 134 u32 i2sctrl_reg_stride; 135 u32 i2s_ports; 136 137 /* I2SCTL Register fields */ 138 struct reg_field loopback; 139 struct reg_field spken; 140 struct reg_field spkmode; 141 struct reg_field spkmono; 142 struct reg_field micen; 143 struct reg_field micmode; 144 struct reg_field micmono; 145 struct reg_field wssrc; 146 struct reg_field bitwidth; 147 148 u32 hdmi_irq_reg_base; 149 u32 hdmi_irq_reg_stride; 150 u32 hdmi_irq_ports; 151 152 /* HDMI specific controls */ 153 u32 hdmi_tx_ctl_addr; 154 u32 hdmi_legacy_addr; 155 u32 hdmi_vbit_addr; 156 u32 hdmi_ch_lsb_addr; 157 u32 hdmi_ch_msb_addr; 158 u32 ch_stride; 159 u32 hdmi_parity_addr; 160 u32 hdmi_dmactl_addr; 161 u32 hdmi_dma_stride; 162 u32 hdmi_DP_addr; 163 u32 hdmi_sstream_addr; 164 165 /* HDMI SSTREAM CTRL fields */ 166 struct reg_field sstream_en; 167 struct reg_field dma_sel; 168 struct reg_field auto_bbit_en; 169 struct reg_field layout; 170 struct reg_field layout_sp; 171 struct reg_field set_sp_on_en; 172 struct reg_field dp_audio; 173 struct reg_field dp_staffing_en; 174 struct reg_field dp_sp_b_hw_en; 175 176 /* HDMI DP METADATA CTL fields */ 177 struct reg_field mute; 178 struct reg_field as_sdp_cc; 179 struct reg_field as_sdp_ct; 180 struct reg_field aif_db4; 181 struct reg_field frequency; 182 struct reg_field mst_index; 183 struct reg_field dptx_index; 184 185 /* HDMI TX CTRL fields */ 186 struct reg_field soft_reset; 187 struct reg_field force_reset; 188 189 /* HDMI TX DMA CTRL */ 190 struct reg_field use_hw_chs; 191 struct reg_field use_hw_usr; 192 struct reg_field hw_chs_sel; 193 struct reg_field hw_usr_sel; 194 195 /* HDMI VBIT CTRL */ 196 struct reg_field replace_vbit; 197 struct reg_field vbit_stream; 198 199 /* HDMI TX LEGACY */ 200 struct reg_field legacy_en; 201 202 /* HDMI TX PARITY */ 203 struct reg_field calc_en; 204 205 /* HDMI CH LSB */ 206 struct reg_field lsb_bits; 207 208 /* HDMI CH MSB */ 209 struct reg_field msb_bits; 210 211 struct reg_field hdmi_rdma_bursten; 212 struct reg_field hdmi_rdma_wpscnt; 213 struct reg_field hdmi_rdma_fifowm; 214 struct reg_field hdmi_rdma_enable; 215 struct reg_field hdmi_rdma_dyncclk; 216 struct reg_field hdmi_rdma_burst8; 217 struct reg_field hdmi_rdma_burst16; 218 struct reg_field hdmi_rdma_dynburst; 219 220 /* RD_DMA Register fields */ 221 struct reg_field rdma_intf; 222 struct reg_field rdma_bursten; 223 struct reg_field rdma_wpscnt; 224 struct reg_field rdma_fifowm; 225 struct reg_field rdma_enable; 226 struct reg_field rdma_dyncclk; 227 228 /* WR_DMA Register fields */ 229 struct reg_field wrdma_intf; 230 struct reg_field wrdma_bursten; 231 struct reg_field wrdma_wpscnt; 232 struct reg_field wrdma_fifowm; 233 struct reg_field wrdma_enable; 234 struct reg_field wrdma_dyncclk; 235 236 /** 237 * on SOCs like APQ8016 the channel control bits start 238 * at different offset to ipq806x 239 **/ 240 u32 dmactl_audif_start; 241 u32 wrdma_channel_start; 242 /* SOC specific initialization like clocks */ 243 int (*init)(struct platform_device *pdev); 244 int (*exit)(struct platform_device *pdev); 245 int (*alloc_dma_channel)(struct lpass_data *data, int direction, unsigned int dai_id); 246 int (*free_dma_channel)(struct lpass_data *data, int ch, unsigned int dai_id); 247 248 /* SOC specific dais */ 249 struct snd_soc_dai_driver *dai_driver; 250 int num_dai; 251 const char * const *dai_osr_clk_names; 252 const char * const *dai_bit_clk_names; 253 254 /* SOC specific clocks configuration */ 255 const char **clk_name; 256 int num_clks; 257 }; 258 259 /* register the platform driver from the CPU DAI driver */ 260 int asoc_qcom_lpass_platform_register(struct platform_device *); 261 int asoc_qcom_lpass_cpu_platform_remove(struct platform_device *pdev); 262 void asoc_qcom_lpass_cpu_platform_shutdown(struct platform_device *pdev); 263 int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev); 264 int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai); 265 extern const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops; 266 int lpass_cpu_pcm_new(struct snd_soc_pcm_runtime *rtd, 267 struct snd_soc_dai *dai); 268 269 #endif /* __LPASS_H__ */ 270