/* sound/soc/rockchip/rockchip_i2s_tdm.c * * ALSA SoC Audio Layer - Rockchip I2S/TDM Controller driver * * Copyright (c) 2018 Rockchip Electronics Co. Ltd. * Author: Sugar Zhang * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "rockchip_i2s_tdm.h" #define DRV_NAME "rockchip-i2s-tdm" #if IS_ENABLED(CONFIG_CPU_PX30) || IS_ENABLED(CONFIG_CPU_RK1808) || IS_ENABLED(CONFIG_CPU_RK3308) #define HAVE_SYNC_RESET #endif #define DEFAULT_MCLK_FS 256 #define CH_GRP_MAX 4 /* The max channel 8 / 2 */ #define MULTIPLEX_CH_MAX 10 #define CLK_PPM_MIN (-1000) #define CLK_PPM_MAX (1000) struct txrx_config { u32 addr; u32 reg; u32 txonly; u32 rxonly; }; struct rk_i2s_soc_data { u32 softrst_offset; u32 grf_reg_offset; u32 grf_shift; int config_count; const struct txrx_config *configs; int (*init)(struct device *dev, u32 addr); }; struct rk_i2s_tdm_dev { struct device *dev; struct clk *hclk; struct clk *mclk_tx; struct clk *mclk_rx; /* The mclk_tx_src is parent of mclk_tx */ struct clk *mclk_tx_src; /* The mclk_rx_src is parent of mclk_rx */ struct clk *mclk_rx_src; /* * The mclk_root0 and mclk_root1 are root parent and supplies for * the different FS. * * e.g: * mclk_root0 is VPLL0, used for FS=48000Hz * mclk_root0 is VPLL1, used for FS=44100Hz */ struct clk *mclk_root0; struct clk *mclk_root1; struct regmap *regmap; struct regmap *grf; struct snd_dmaengine_dai_dma_data capture_dma_data; struct snd_dmaengine_dai_dma_data playback_dma_data; struct reset_control *tx_reset; struct reset_control *rx_reset; const struct rk_i2s_soc_data *soc_data; #ifdef HAVE_SYNC_RESET void __iomem *cru_base; int tx_reset_id; int rx_reset_id; #endif bool is_master_mode; bool io_multiplex; bool mclk_calibrate; bool tdm_mode; bool tdm_fsync_half_frame; unsigned int mclk_rx_freq; unsigned int mclk_tx_freq; unsigned int mclk_root0_freq; unsigned int mclk_root1_freq; unsigned int mclk_root0_initial_freq; unsigned int mclk_root1_initial_freq; unsigned int bclk_fs; unsigned int clk_trcm; unsigned int i2s_sdis[CH_GRP_MAX]; unsigned int i2s_sdos[CH_GRP_MAX]; int clk_ppm; atomic_t refcount; spinlock_t lock; /* xfer lock */ }; static int to_ch_num(unsigned int val) { int chs; switch (val) { case I2S_CHN_4: chs = 4; break; case I2S_CHN_6: chs = 6; break; case I2S_CHN_8: chs = 8; break; default: chs = 2; break; } return chs; } static int i2s_tdm_runtime_suspend(struct device *dev) { struct rk_i2s_tdm_dev *i2s_tdm = dev_get_drvdata(dev); regcache_cache_only(i2s_tdm->regmap, true); if (!IS_ERR(i2s_tdm->mclk_tx)) clk_disable_unprepare(i2s_tdm->mclk_tx); if (!IS_ERR(i2s_tdm->mclk_rx)) clk_disable_unprepare(i2s_tdm->mclk_rx); return 0; } static int i2s_tdm_runtime_resume(struct device *dev) { struct rk_i2s_tdm_dev *i2s_tdm = dev_get_drvdata(dev); int ret; if (!IS_ERR(i2s_tdm->mclk_tx)) clk_prepare_enable(i2s_tdm->mclk_tx); if (!IS_ERR(i2s_tdm->mclk_rx)) clk_prepare_enable(i2s_tdm->mclk_rx); regcache_cache_only(i2s_tdm->regmap, false); regcache_mark_dirty(i2s_tdm->regmap); ret = regcache_sync(i2s_tdm->regmap); if (ret) { if (!IS_ERR(i2s_tdm->mclk_tx)) clk_disable_unprepare(i2s_tdm->mclk_tx); if (!IS_ERR(i2s_tdm->mclk_rx)) clk_disable_unprepare(i2s_tdm->mclk_rx); } return ret; } static inline struct rk_i2s_tdm_dev *to_info(struct snd_soc_dai *dai) { return snd_soc_dai_get_drvdata(dai); } #ifdef HAVE_SYNC_RESET #if defined(CONFIG_ARM) && !defined(writeq) static inline void __raw_writeq(u64 val, volatile void __iomem *addr) { asm volatile("strd %0, %H0, [%1]" : : "r" (val), "r" (addr)); } #define writeq(v,c) ({ __iowmb(); __raw_writeq((__force u64) cpu_to_le64(v), c); }) #endif static void rockchip_snd_xfer_reset_assert(struct rk_i2s_tdm_dev *i2s_tdm) { int tx_bank, rx_bank, tx_offset, rx_offset, tx_id, rx_id; void __iomem *cru_reset, *addr; unsigned long flags; u64 val; if (!i2s_tdm->cru_base || !i2s_tdm->soc_data || !i2s_tdm->is_master_mode) return; tx_id = i2s_tdm->tx_reset_id; rx_id = i2s_tdm->rx_reset_id; if (tx_id < 0 || rx_id < 0) return; tx_bank = tx_id / 16; tx_offset = tx_id % 16; rx_bank = rx_id / 16; rx_offset = rx_id % 16; dev_dbg(i2s_tdm->dev, "tx_bank: %d, rx_bank: %d,tx_offset: %d, rx_offset: %d\n", tx_bank, rx_bank, tx_offset, rx_offset); cru_reset = i2s_tdm->cru_base + i2s_tdm->soc_data->softrst_offset; switch (abs(tx_bank - rx_bank)) { case 0: writel(BIT(tx_offset) | BIT(rx_offset) | (BIT(tx_offset) << 16) | (BIT(rx_offset) << 16), cru_reset + (tx_bank * 4)); break; case 1: if (tx_bank < rx_bank) { val = BIT(rx_offset) | (BIT(rx_offset) << 16); val <<= 32; val |= BIT(tx_offset) | (BIT(tx_offset) << 16); addr = cru_reset + (tx_bank * 4); } else { val = BIT(tx_offset) | (BIT(tx_offset) << 16); val <<= 32; val |= BIT(rx_offset) | (BIT(rx_offset) << 16); addr = cru_reset + (rx_bank * 4); } if (IS_ALIGNED((uintptr_t)addr, 8)) { writeq(val, addr); break; } /* fall through */ default: local_irq_save(flags); writel(BIT(tx_offset) | (BIT(tx_offset) << 16), cru_reset + (tx_bank * 4)); writel(BIT(rx_offset) | (BIT(rx_offset) << 16), cru_reset + (rx_bank * 4)); local_irq_restore(flags); break; } /* delay for reset assert done */ udelay(10); } static void rockchip_snd_xfer_reset_deassert(struct rk_i2s_tdm_dev *i2s_tdm) { int tx_bank, rx_bank, tx_offset, rx_offset, tx_id, rx_id; void __iomem *cru_reset, *addr; unsigned long flags; u64 val; if (!i2s_tdm->cru_base || !i2s_tdm->soc_data || !i2s_tdm->is_master_mode) return; tx_id = i2s_tdm->tx_reset_id; rx_id = i2s_tdm->rx_reset_id; if (tx_id < 0 || rx_id < 0) return; tx_bank = tx_id / 16; tx_offset = tx_id % 16; rx_bank = rx_id / 16; rx_offset = rx_id % 16; dev_dbg(i2s_tdm->dev, "tx_bank: %d, rx_bank: %d,tx_offset: %d, rx_offset: %d\n", tx_bank, rx_bank, tx_offset, rx_offset); cru_reset = i2s_tdm->cru_base + i2s_tdm->soc_data->softrst_offset; switch (abs(tx_bank - rx_bank)) { case 0: writel((BIT(tx_offset) << 16) | (BIT(rx_offset) << 16), cru_reset + (tx_bank * 4)); break; case 1: if (tx_bank < rx_bank) { val = (BIT(rx_offset) << 16); val <<= 32; val |= (BIT(tx_offset) << 16); addr = cru_reset + (tx_bank * 4); } else { val = (BIT(tx_offset) << 16); val <<= 32; val |= (BIT(rx_offset) << 16); addr = cru_reset + (rx_bank * 4); } if (IS_ALIGNED((uintptr_t)addr, 8)) { writeq(val, addr); break; } /* fall through */ default: local_irq_save(flags); writel((BIT(tx_offset) << 16), cru_reset + (tx_bank * 4)); writel((BIT(rx_offset) << 16), cru_reset + (rx_bank * 4)); local_irq_restore(flags); break; } /* delay for reset deassert done */ udelay(10); } /* * make sure both tx and rx are reset at the same time for sync lrck * when clk_trcm > 0 */ static void rockchip_snd_xfer_sync_reset(struct rk_i2s_tdm_dev *i2s_tdm) { rockchip_snd_xfer_reset_assert(i2s_tdm); rockchip_snd_xfer_reset_deassert(i2s_tdm); } #else static inline void rockchip_snd_xfer_reset_assert(struct rk_i2s_tdm_dev *i2s_tdm) { } static inline void rockchip_snd_xfer_reset_deassert(struct rk_i2s_tdm_dev *i2s_tdm) { } static inline void rockchip_snd_xfer_sync_reset(struct rk_i2s_tdm_dev *i2s_tdm) { } #endif /* only used when clk_trcm > 0 */ static void rockchip_snd_txrxctrl(struct snd_pcm_substream *substream, struct snd_soc_dai *dai, int on) { struct rk_i2s_tdm_dev *i2s_tdm = to_info(dai); unsigned int val = 0; unsigned long flags; int retry = 10; spin_lock_irqsave(&i2s_tdm->lock, flags); if (on) { if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE); else regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_ENABLE); if (atomic_inc_return(&i2s_tdm->refcount) == 1) { rockchip_snd_xfer_reset_assert(i2s_tdm); regmap_update_bits(i2s_tdm->regmap, I2S_XFER, I2S_XFER_TXS_START | I2S_XFER_RXS_START, I2S_XFER_TXS_START | I2S_XFER_RXS_START); rockchip_snd_xfer_reset_deassert(i2s_tdm); } } else { if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_DISABLE); else regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_DISABLE); if (atomic_dec_and_test(&i2s_tdm->refcount)) { regmap_update_bits(i2s_tdm->regmap, I2S_XFER, I2S_XFER_TXS_START | I2S_XFER_RXS_START, I2S_XFER_TXS_STOP | I2S_XFER_RXS_STOP); udelay(150); regmap_update_bits(i2s_tdm->regmap, I2S_CLR, I2S_CLR_TXC | I2S_CLR_RXC, I2S_CLR_TXC | I2S_CLR_RXC); regmap_read(i2s_tdm->regmap, I2S_CLR, &val); /* Should wait for clear operation to finish */ while (val) { regmap_read(i2s_tdm->regmap, I2S_CLR, &val); retry--; if (!retry) { dev_info(i2s_tdm->dev, "reset txrx\n"); rockchip_snd_xfer_sync_reset(i2s_tdm); break; } } } } spin_unlock_irqrestore(&i2s_tdm->lock, flags); } static void rockchip_snd_reset(struct reset_control *rc) { if (IS_ERR(rc)) return; reset_control_assert(rc); /* delay for reset assert done */ udelay(10); reset_control_deassert(rc); /* delay for reset deassert done */ udelay(10); } static void rockchip_snd_txctrl(struct rk_i2s_tdm_dev *i2s_tdm, int on) { unsigned int val = 0; int retry = 10; if (on) { regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE); regmap_update_bits(i2s_tdm->regmap, I2S_XFER, I2S_XFER_TXS_START, I2S_XFER_TXS_START); } else { regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_DISABLE); regmap_update_bits(i2s_tdm->regmap, I2S_XFER, I2S_XFER_TXS_START, I2S_XFER_TXS_STOP); udelay(150); if (i2s_tdm->is_master_mode) { regmap_update_bits(i2s_tdm->regmap, I2S_CLR, I2S_CLR_TXC, I2S_CLR_TXC); regmap_read(i2s_tdm->regmap, I2S_CLR, &val); /* Should wait for clear operation to finish */ while (val) { regmap_read(i2s_tdm->regmap, I2S_CLR, &val); retry--; if (!retry) { dev_warn(i2s_tdm->dev, "reset tx\n"); rockchip_snd_reset(i2s_tdm->tx_reset); break; } } } else { rockchip_snd_reset(i2s_tdm->tx_reset); } } } static void rockchip_snd_rxctrl(struct rk_i2s_tdm_dev *i2s_tdm, int on) { unsigned int val = 0; int retry = 10; if (on) { regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_ENABLE); regmap_update_bits(i2s_tdm->regmap, I2S_XFER, I2S_XFER_RXS_START, I2S_XFER_RXS_START); } else { regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_DISABLE); regmap_update_bits(i2s_tdm->regmap, I2S_XFER, I2S_XFER_RXS_START, I2S_XFER_RXS_STOP); udelay(150); if (i2s_tdm->is_master_mode) { regmap_update_bits(i2s_tdm->regmap, I2S_CLR, I2S_CLR_RXC, I2S_CLR_RXC); regmap_read(i2s_tdm->regmap, I2S_CLR, &val); /* Should wait for clear operation to finish */ while (val) { regmap_read(i2s_tdm->regmap, I2S_CLR, &val); retry--; if (!retry) { dev_warn(i2s_tdm->dev, "reset rx\n"); rockchip_snd_reset(i2s_tdm->rx_reset); break; } } } else { rockchip_snd_reset(i2s_tdm->rx_reset); } } } static int rockchip_i2s_tdm_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) { struct rk_i2s_tdm_dev *i2s_tdm = to_info(cpu_dai); unsigned int mask = 0, val = 0, tdm_val = 0; int ret = 0; bool is_tdm = i2s_tdm->tdm_mode; pm_runtime_get_sync(cpu_dai->dev); mask = I2S_CKR_MSS_MASK; switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBS_CFS: val = I2S_CKR_MSS_MASTER; i2s_tdm->is_master_mode = true; break; case SND_SOC_DAIFMT_CBM_CFM: val = I2S_CKR_MSS_SLAVE; i2s_tdm->is_master_mode = false; break; default: ret = -EINVAL; goto err_pm_put; } regmap_update_bits(i2s_tdm->regmap, I2S_CKR, mask, val); mask = I2S_CKR_CKP_MASK | I2S_CKR_TLP_MASK | I2S_CKR_RLP_MASK; switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: val = I2S_CKR_CKP_NORMAL | I2S_CKR_TLP_NORMAL | I2S_CKR_RLP_NORMAL; break; case SND_SOC_DAIFMT_NB_IF: val = I2S_CKR_CKP_NORMAL | I2S_CKR_TLP_INVERTED | I2S_CKR_RLP_INVERTED; break; case SND_SOC_DAIFMT_IB_NF: val = I2S_CKR_CKP_INVERTED | I2S_CKR_TLP_NORMAL | I2S_CKR_RLP_NORMAL; break; case SND_SOC_DAIFMT_IB_IF: val = I2S_CKR_CKP_INVERTED | I2S_CKR_TLP_INVERTED | I2S_CKR_RLP_INVERTED; break; default: ret = -EINVAL; goto err_pm_put; } regmap_update_bits(i2s_tdm->regmap, I2S_CKR, mask, val); mask = I2S_TXCR_IBM_MASK | I2S_TXCR_TFS_MASK | I2S_TXCR_PBM_MASK; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_RIGHT_J: val = I2S_TXCR_IBM_RSJM; break; case SND_SOC_DAIFMT_LEFT_J: val = I2S_TXCR_IBM_LSJM; break; case SND_SOC_DAIFMT_I2S: val = I2S_TXCR_IBM_NORMAL; break; case SND_SOC_DAIFMT_DSP_A: /* PCM delay 1 mode */ val = I2S_TXCR_TFS_PCM | I2S_TXCR_PBM_MODE(1); break; case SND_SOC_DAIFMT_DSP_B: /* PCM no delay mode */ val = I2S_TXCR_TFS_PCM; break; default: ret = -EINVAL; goto err_pm_put; } regmap_update_bits(i2s_tdm->regmap, I2S_TXCR, mask, val); mask = I2S_RXCR_IBM_MASK | I2S_RXCR_TFS_MASK | I2S_RXCR_PBM_MASK; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_RIGHT_J: val = I2S_RXCR_IBM_RSJM; break; case SND_SOC_DAIFMT_LEFT_J: val = I2S_RXCR_IBM_LSJM; break; case SND_SOC_DAIFMT_I2S: val = I2S_RXCR_IBM_NORMAL; break; case SND_SOC_DAIFMT_DSP_A: /* PCM delay 1 mode */ val = I2S_RXCR_TFS_PCM | I2S_RXCR_PBM_MODE(1); break; case SND_SOC_DAIFMT_DSP_B: /* PCM no delay mode */ val = I2S_RXCR_TFS_PCM; break; default: ret = -EINVAL; goto err_pm_put; } regmap_update_bits(i2s_tdm->regmap, I2S_RXCR, mask, val); if (is_tdm) { switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_RIGHT_J: val = I2S_TXCR_TFS_TDM_I2S; tdm_val = TDM_SHIFT_CTRL(2); break; case SND_SOC_DAIFMT_LEFT_J: val = I2S_TXCR_TFS_TDM_I2S; tdm_val = TDM_SHIFT_CTRL(1); break; case SND_SOC_DAIFMT_I2S: val = I2S_TXCR_TFS_TDM_I2S; tdm_val = TDM_SHIFT_CTRL(0); break; case SND_SOC_DAIFMT_DSP_A: val = I2S_TXCR_TFS_TDM_PCM; tdm_val = TDM_SHIFT_CTRL(2); break; case SND_SOC_DAIFMT_DSP_B: val = I2S_TXCR_TFS_TDM_PCM; tdm_val = TDM_SHIFT_CTRL(4); break; default: ret = -EINVAL; goto err_pm_put; } tdm_val |= TDM_FSYNC_WIDTH_SEL1(1); if (i2s_tdm->tdm_fsync_half_frame) tdm_val |= TDM_FSYNC_WIDTH_HALF_FRAME; else tdm_val |= TDM_FSYNC_WIDTH_ONE_FRAME; mask = I2S_TXCR_TFS_MASK; regmap_update_bits(i2s_tdm->regmap, I2S_TXCR, mask, val); regmap_update_bits(i2s_tdm->regmap, I2S_RXCR, mask, val); mask = TDM_FSYNC_WIDTH_SEL1_MSK | TDM_FSYNC_WIDTH_SEL0_MSK | TDM_SHIFT_CTRL_MSK; regmap_update_bits(i2s_tdm->regmap, I2S_TDM_TXCR, mask, tdm_val); regmap_update_bits(i2s_tdm->regmap, I2S_TDM_RXCR, mask, tdm_val); if (val == I2S_TXCR_TFS_TDM_I2S && !i2s_tdm->tdm_fsync_half_frame) { /* refine frame width for TDM_I2S_ONE_FRAME */ mask = TDM_FRAME_WIDTH_MSK; tdm_val = TDM_FRAME_WIDTH(i2s_tdm->bclk_fs >> 1); regmap_update_bits(i2s_tdm->regmap, I2S_TDM_TXCR, mask, tdm_val); regmap_update_bits(i2s_tdm->regmap, I2S_TDM_RXCR, mask, tdm_val); } } err_pm_put: pm_runtime_put(cpu_dai->dev); return ret; } static void rockchip_i2s_tdm_xfer_pause(struct snd_pcm_substream *substream, struct rk_i2s_tdm_dev *i2s_tdm) { int stream; unsigned int val = 0; int retry = 10; stream = SNDRV_PCM_STREAM_LAST - substream->stream; if (stream == SNDRV_PCM_STREAM_PLAYBACK) regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_DISABLE); else regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_DISABLE); regmap_update_bits(i2s_tdm->regmap, I2S_XFER, I2S_XFER_TXS_START | I2S_XFER_RXS_START, I2S_XFER_TXS_STOP | I2S_XFER_RXS_STOP); udelay(150); regmap_update_bits(i2s_tdm->regmap, I2S_CLR, I2S_CLR_TXC | I2S_CLR_RXC, I2S_CLR_TXC | I2S_CLR_RXC); regmap_read(i2s_tdm->regmap, I2S_CLR, &val); /* Should wait for clear operation to finish */ while (val) { regmap_read(i2s_tdm->regmap, I2S_CLR, &val); retry--; if (!retry) { dev_info(i2s_tdm->dev, "reset txrx\n"); rockchip_snd_xfer_sync_reset(i2s_tdm); break; } } } static void rockchip_i2s_tdm_xfer_resume(struct snd_pcm_substream *substream, struct rk_i2s_tdm_dev *i2s_tdm) { int stream; stream = SNDRV_PCM_STREAM_LAST - substream->stream; if (stream == SNDRV_PCM_STREAM_PLAYBACK) regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE); else regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_ENABLE); rockchip_snd_xfer_reset_assert(i2s_tdm); regmap_update_bits(i2s_tdm->regmap, I2S_XFER, I2S_XFER_TXS_START | I2S_XFER_RXS_START, I2S_XFER_TXS_START | I2S_XFER_RXS_START); rockchip_snd_xfer_reset_deassert(i2s_tdm); } static int rockchip_i2s_tdm_clk_set_rate(struct rk_i2s_tdm_dev *i2s_tdm, struct clk *clk, unsigned long rate, int ppm) { unsigned long rate_target; int delta, ret; if (ppm == i2s_tdm->clk_ppm) return 0; ret = rockchip_pll_clk_compensation(clk, ppm); if (ret != -ENOSYS) goto out; delta = (ppm < 0) ? -1 : 1; delta *= (int)div64_u64((uint64_t)rate * (uint64_t)abs(ppm) + 500000, 1000000); rate_target = rate + delta; if (!rate_target) return -EINVAL; ret = clk_set_rate(clk, rate_target); if (ret) return ret; out: if (!ret) i2s_tdm->clk_ppm = ppm; return ret; } static int rockchip_i2s_tdm_calibrate_mclk(struct rk_i2s_tdm_dev *i2s_tdm, struct snd_pcm_substream *substream, unsigned int lrck_freq) { struct clk *mclk_root; struct clk *mclk_parent; unsigned int mclk_root_freq; unsigned int mclk_root_initial_freq; unsigned int mclk_parent_freq; unsigned int div, delta; uint64_t ppm; int ret; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) mclk_parent = i2s_tdm->mclk_tx_src; else mclk_parent = i2s_tdm->mclk_rx_src; switch (lrck_freq) { case 8000: case 16000: case 24000: case 32000: case 48000: case 64000: case 96000: case 192000: mclk_root = i2s_tdm->mclk_root0; mclk_root_freq = i2s_tdm->mclk_root0_freq; mclk_root_initial_freq = i2s_tdm->mclk_root0_initial_freq; mclk_parent_freq = DEFAULT_MCLK_FS * 192000; break; case 11025: case 22050: case 44100: case 88200: case 176400: mclk_root = i2s_tdm->mclk_root1; mclk_root_freq = i2s_tdm->mclk_root1_freq; mclk_root_initial_freq = i2s_tdm->mclk_root1_initial_freq; mclk_parent_freq = DEFAULT_MCLK_FS * 176400; break; default: dev_err(i2s_tdm->dev, "Invalid LRCK freq: %u Hz\n", lrck_freq); return -EINVAL; } ret = clk_set_parent(mclk_parent, mclk_root); if (ret) goto out; ret = rockchip_i2s_tdm_clk_set_rate(i2s_tdm, mclk_root, mclk_root_freq, 0); if (ret) goto out; delta = abs(mclk_root_freq % mclk_parent_freq - mclk_parent_freq); ppm = div64_u64((uint64_t)delta * 1000000, (uint64_t)mclk_root_freq); if (ppm) { div = DIV_ROUND_CLOSEST(mclk_root_initial_freq, mclk_parent_freq); if (!div) return -EINVAL; mclk_root_freq = mclk_parent_freq * round_up(div, 2); ret = clk_set_rate(mclk_root, mclk_root_freq); if (ret) goto out; i2s_tdm->mclk_root0_freq = clk_get_rate(i2s_tdm->mclk_root0); i2s_tdm->mclk_root1_freq = clk_get_rate(i2s_tdm->mclk_root1); } ret = clk_set_rate(mclk_parent, mclk_parent_freq); if (ret) goto out; out: return ret; } static int rockchip_i2s_tdm_set_mclk(struct rk_i2s_tdm_dev *i2s_tdm, struct snd_pcm_substream *substream, struct clk **mclk) { unsigned int mclk_freq; int ret; if (i2s_tdm->clk_trcm) { if (i2s_tdm->mclk_tx_freq != i2s_tdm->mclk_rx_freq) { dev_err(i2s_tdm->dev, "clk_trcm, tx: %d and rx: %d should be same\n", i2s_tdm->mclk_tx_freq, i2s_tdm->mclk_rx_freq); ret = -EINVAL; goto err; } ret = clk_set_rate(i2s_tdm->mclk_tx, i2s_tdm->mclk_tx_freq); if (ret) goto err; ret = clk_set_rate(i2s_tdm->mclk_rx, i2s_tdm->mclk_rx_freq); if (ret) goto err; /* mclk_rx is also ok. */ *mclk = i2s_tdm->mclk_tx; } else { if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { *mclk = i2s_tdm->mclk_tx; mclk_freq = i2s_tdm->mclk_tx_freq; } else { *mclk = i2s_tdm->mclk_rx; mclk_freq = i2s_tdm->mclk_rx_freq; } ret = clk_set_rate(*mclk, mclk_freq); if (ret) goto err; } return 0; err: return ret; } static int rockchip_i2s_io_multiplex(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct rk_i2s_tdm_dev *i2s_tdm = to_info(dai); int usable_chs = MULTIPLEX_CH_MAX; unsigned int val = 0; if (!i2s_tdm->io_multiplex) return 0; if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { struct snd_pcm_str *playback_str = &substream->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]; if (playback_str->substream_opened) { regmap_read(i2s_tdm->regmap, I2S_TXCR, &val); val &= I2S_TXCR_CSR_MASK; usable_chs = MULTIPLEX_CH_MAX - to_ch_num(val); } regmap_read(i2s_tdm->regmap, I2S_RXCR, &val); val &= I2S_RXCR_CSR_MASK; if (to_ch_num(val) > usable_chs) { dev_err(i2s_tdm->dev, "Capture chs(%d) > usable chs(%d)\n", to_ch_num(val), usable_chs); return -EINVAL; } switch (val) { case I2S_CHN_4: val = I2S_IO_6CH_OUT_4CH_IN; break; case I2S_CHN_6: val = I2S_IO_4CH_OUT_6CH_IN; break; case I2S_CHN_8: val = I2S_IO_2CH_OUT_8CH_IN; break; default: val = I2S_IO_8CH_OUT_2CH_IN; break; } } else { struct snd_pcm_str *capture_str = &substream->pcm->streams[SNDRV_PCM_STREAM_CAPTURE]; if (capture_str->substream_opened) { regmap_read(i2s_tdm->regmap, I2S_RXCR, &val); val &= I2S_RXCR_CSR_MASK; usable_chs = MULTIPLEX_CH_MAX - to_ch_num(val); } regmap_read(i2s_tdm->regmap, I2S_TXCR, &val); val &= I2S_TXCR_CSR_MASK; if (to_ch_num(val) > usable_chs) { dev_err(i2s_tdm->dev, "Playback chs(%d) > usable chs(%d)\n", to_ch_num(val), usable_chs); return -EINVAL; } switch (val) { case I2S_CHN_4: val = I2S_IO_4CH_OUT_6CH_IN; break; case I2S_CHN_6: val = I2S_IO_6CH_OUT_4CH_IN; break; case I2S_CHN_8: val = I2S_IO_8CH_OUT_2CH_IN; break; default: val = I2S_IO_2CH_OUT_8CH_IN; break; } } val <<= i2s_tdm->soc_data->grf_shift; val |= (I2S_IO_DIRECTION_MASK << i2s_tdm->soc_data->grf_shift) << 16; regmap_write(i2s_tdm->grf, i2s_tdm->soc_data->grf_reg_offset, val); return 0; } static bool is_params_dirty(struct snd_pcm_substream *substream, struct snd_soc_dai *dai, unsigned int div_bclk, unsigned int div_lrck, unsigned int fmt) { struct rk_i2s_tdm_dev *i2s_tdm = to_info(dai); unsigned int last_div_bclk, last_div_lrck, last_fmt, val; regmap_read(i2s_tdm->regmap, I2S_CLKDIV, &val); last_div_bclk = ((val & I2S_CLKDIV_TXM_MASK) >> I2S_CLKDIV_TXM_SHIFT) + 1; if (last_div_bclk != div_bclk) return true; regmap_read(i2s_tdm->regmap, I2S_CKR, &val); last_div_lrck = ((val & I2S_CKR_TSD_MASK) >> I2S_CKR_TSD_SHIFT) + 1; if (last_div_lrck != div_lrck) return true; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { regmap_read(i2s_tdm->regmap, I2S_TXCR, &val); last_fmt = val & (I2S_TXCR_VDW_MASK | I2S_TXCR_CSR_MASK); } else { regmap_read(i2s_tdm->regmap, I2S_RXCR, &val); last_fmt = val & (I2S_RXCR_VDW_MASK | I2S_RXCR_CSR_MASK); } if (last_fmt != fmt) return true; return false; } static int rockchip_i2s_trcm_mode(struct snd_pcm_substream *substream, struct snd_soc_dai *dai, unsigned int div_bclk, unsigned int div_lrck, unsigned int fmt) { struct rk_i2s_tdm_dev *i2s_tdm = to_info(dai); unsigned long flags; if (!i2s_tdm->clk_trcm) return 0; if (!is_params_dirty(substream, dai, div_bclk, div_lrck, fmt)) return 0; spin_lock_irqsave(&i2s_tdm->lock, flags); if (atomic_read(&i2s_tdm->refcount)) rockchip_i2s_tdm_xfer_pause(substream, i2s_tdm); regmap_update_bits(i2s_tdm->regmap, I2S_CLKDIV, I2S_CLKDIV_TXM_MASK | I2S_CLKDIV_RXM_MASK, I2S_CLKDIV_TXM(div_bclk) | I2S_CLKDIV_RXM(div_bclk)); regmap_update_bits(i2s_tdm->regmap, I2S_CKR, I2S_CKR_TSD_MASK | I2S_CKR_RSD_MASK, I2S_CKR_TSD(div_lrck) | I2S_CKR_RSD(div_lrck)); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) regmap_update_bits(i2s_tdm->regmap, I2S_TXCR, I2S_TXCR_VDW_MASK | I2S_TXCR_CSR_MASK, fmt); else regmap_update_bits(i2s_tdm->regmap, I2S_RXCR, I2S_RXCR_VDW_MASK | I2S_RXCR_CSR_MASK, fmt); if (atomic_read(&i2s_tdm->refcount)) rockchip_i2s_tdm_xfer_resume(substream, i2s_tdm); spin_unlock_irqrestore(&i2s_tdm->lock, flags); return 0; } static int rockchip_i2s_tdm_params_channels(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct rk_i2s_tdm_dev *i2s_tdm = to_info(dai); unsigned int reg_fmt, fmt; int ret = 0; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) reg_fmt = I2S_TXCR; else reg_fmt = I2S_RXCR; regmap_read(i2s_tdm->regmap, reg_fmt, &fmt); fmt &= I2S_TXCR_TFS_MASK; if (fmt == I2S_TXCR_TFS_TDM_I2S && !i2s_tdm->tdm_fsync_half_frame) { switch (params_channels(params)) { case 16: ret = I2S_CHN_8; break; case 12: ret = I2S_CHN_6; break; case 8: ret = I2S_CHN_4; break; case 4: ret = I2S_CHN_2; break; default: ret = -EINVAL; break; } } else { switch (params_channels(params)) { case 8: ret = I2S_CHN_8; break; case 6: ret = I2S_CHN_6; break; case 4: ret = I2S_CHN_4; break; case 2: ret = I2S_CHN_2; break; default: ret = -EINVAL; break; } } return ret; } static int rockchip_i2s_tdm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct rk_i2s_tdm_dev *i2s_tdm = to_info(dai); struct clk *mclk; int ret = 0; unsigned int val = 0; unsigned int mclk_rate, bclk_rate, div_bclk = 4, div_lrck = 64; if (i2s_tdm->is_master_mode) { if (i2s_tdm->mclk_calibrate) rockchip_i2s_tdm_calibrate_mclk(i2s_tdm, substream, params_rate(params)); ret = rockchip_i2s_tdm_set_mclk(i2s_tdm, substream, &mclk); if (ret) goto err; mclk_rate = clk_get_rate(mclk); bclk_rate = i2s_tdm->bclk_fs * params_rate(params); if (!bclk_rate) { ret = -EINVAL; goto err; } div_bclk = DIV_ROUND_CLOSEST(mclk_rate, bclk_rate); div_lrck = bclk_rate / params_rate(params); } switch (params_format(params)) { case SNDRV_PCM_FORMAT_S8: val |= I2S_TXCR_VDW(8); break; case SNDRV_PCM_FORMAT_S16_LE: val |= I2S_TXCR_VDW(16); break; case SNDRV_PCM_FORMAT_S20_3LE: val |= I2S_TXCR_VDW(20); break; case SNDRV_PCM_FORMAT_S24_LE: val |= I2S_TXCR_VDW(24); break; case SNDRV_PCM_FORMAT_S32_LE: val |= I2S_TXCR_VDW(32); break; default: ret = -EINVAL; goto err; } ret = rockchip_i2s_tdm_params_channels(substream, params, dai); if (ret < 0) goto err; val |= ret; if (i2s_tdm->clk_trcm) { rockchip_i2s_trcm_mode(substream, dai, div_bclk, div_lrck, val); } else if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { regmap_update_bits(i2s_tdm->regmap, I2S_CLKDIV, I2S_CLKDIV_TXM_MASK, I2S_CLKDIV_TXM(div_bclk)); regmap_update_bits(i2s_tdm->regmap, I2S_CKR, I2S_CKR_TSD_MASK, I2S_CKR_TSD(div_lrck)); regmap_update_bits(i2s_tdm->regmap, I2S_TXCR, I2S_TXCR_VDW_MASK | I2S_TXCR_CSR_MASK, val); } else { regmap_update_bits(i2s_tdm->regmap, I2S_CLKDIV, I2S_CLKDIV_RXM_MASK, I2S_CLKDIV_RXM(div_bclk)); regmap_update_bits(i2s_tdm->regmap, I2S_CKR, I2S_CKR_RSD_MASK, I2S_CKR_RSD(div_lrck)); regmap_update_bits(i2s_tdm->regmap, I2S_RXCR, I2S_RXCR_VDW_MASK | I2S_RXCR_CSR_MASK, val); } ret = rockchip_i2s_io_multiplex(substream, dai); err: return ret; } static int rockchip_i2s_tdm_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct rk_i2s_tdm_dev *i2s_tdm = to_info(dai); int ret = 0; switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: if (i2s_tdm->clk_trcm) rockchip_snd_txrxctrl(substream, dai, 1); else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) rockchip_snd_rxctrl(i2s_tdm, 1); else rockchip_snd_txctrl(i2s_tdm, 1); break; case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: if (i2s_tdm->clk_trcm) rockchip_snd_txrxctrl(substream, dai, 0); else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) rockchip_snd_rxctrl(i2s_tdm, 0); else rockchip_snd_txctrl(i2s_tdm, 0); break; default: ret = -EINVAL; break; } return ret; } static int rockchip_i2s_tdm_set_sysclk(struct snd_soc_dai *cpu_dai, int stream, unsigned int freq, int dir) { struct rk_i2s_tdm_dev *i2s_tdm = to_info(cpu_dai); /* Put set mclk rate into rockchip_i2s_tdm_set_mclk() */ if (i2s_tdm->clk_trcm) { i2s_tdm->mclk_tx_freq = freq; i2s_tdm->mclk_rx_freq = freq; } else { if (stream == SNDRV_PCM_STREAM_PLAYBACK) i2s_tdm->mclk_tx_freq = freq; else i2s_tdm->mclk_rx_freq = freq; } dev_dbg(i2s_tdm->dev, "The target mclk_%s freq is: %d\n", stream ? "rx" : "tx", freq); return 0; } static int rockchip_i2s_tdm_clk_compensation_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = CLK_PPM_MIN; uinfo->value.integer.max = CLK_PPM_MAX; uinfo->value.integer.step = 1; return 0; } static int rockchip_i2s_tdm_clk_compensation_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); struct rk_i2s_tdm_dev *i2s_tdm = snd_soc_dai_get_drvdata(dai); ucontrol->value.integer.value[0] = i2s_tdm->clk_ppm; return 0; } static int rockchip_i2s_tdm_clk_compensation_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); struct rk_i2s_tdm_dev *i2s_tdm = snd_soc_dai_get_drvdata(dai); int ret = 0, ppm = 0; if ((ucontrol->value.integer.value[0] < CLK_PPM_MIN) || (ucontrol->value.integer.value[0] > CLK_PPM_MAX)) return -EINVAL; ppm = ucontrol->value.integer.value[0]; ret = rockchip_i2s_tdm_clk_set_rate(i2s_tdm, i2s_tdm->mclk_root0, i2s_tdm->mclk_root0_freq, ppm); if (ret) return ret; if (clk_is_match(i2s_tdm->mclk_root0, i2s_tdm->mclk_root1)) return 0; ret = rockchip_i2s_tdm_clk_set_rate(i2s_tdm, i2s_tdm->mclk_root1, i2s_tdm->mclk_root1_freq, ppm); return ret; } static struct snd_kcontrol_new rockchip_i2s_tdm_compensation_control = { .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = "PCM Clk Compensation In PPM", .info = rockchip_i2s_tdm_clk_compensation_info, .get = rockchip_i2s_tdm_clk_compensation_get, .put = rockchip_i2s_tdm_clk_compensation_put, }; static int rockchip_i2s_tdm_dai_probe(struct snd_soc_dai *dai) { struct rk_i2s_tdm_dev *i2s_tdm = snd_soc_dai_get_drvdata(dai); dai->capture_dma_data = &i2s_tdm->capture_dma_data; dai->playback_dma_data = &i2s_tdm->playback_dma_data; if (i2s_tdm->mclk_calibrate) snd_soc_add_dai_controls(dai, &rockchip_i2s_tdm_compensation_control, 1); return 0; } static int rockchip_dai_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) { struct rk_i2s_tdm_dev *i2s_tdm = snd_soc_dai_get_drvdata(dai); unsigned int mask, val; i2s_tdm->tdm_mode = true; i2s_tdm->bclk_fs = slots * slot_width; mask = TDM_SLOT_BIT_WIDTH_MSK | TDM_FRAME_WIDTH_MSK; val = TDM_SLOT_BIT_WIDTH(slot_width) | TDM_FRAME_WIDTH(slots * slot_width); pm_runtime_get_sync(dai->dev); regmap_update_bits(i2s_tdm->regmap, I2S_TDM_TXCR, mask, val); regmap_update_bits(i2s_tdm->regmap, I2S_TDM_RXCR, mask, val); pm_runtime_put(dai->dev); return 0; } static const struct snd_soc_dai_ops rockchip_i2s_tdm_dai_ops = { .hw_params = rockchip_i2s_tdm_hw_params, .set_sysclk = rockchip_i2s_tdm_set_sysclk, .set_fmt = rockchip_i2s_tdm_set_fmt, .set_tdm_slot = rockchip_dai_tdm_slot, .trigger = rockchip_i2s_tdm_trigger, }; static const struct snd_soc_component_driver rockchip_i2s_tdm_component = { .name = DRV_NAME, }; static bool rockchip_i2s_tdm_wr_reg(struct device *dev, unsigned int reg) { switch (reg) { case I2S_TXCR: case I2S_RXCR: case I2S_CKR: case I2S_DMACR: case I2S_INTCR: case I2S_XFER: case I2S_CLR: case I2S_TXDR: case I2S_TDM_TXCR: case I2S_TDM_RXCR: case I2S_CLKDIV: return true; default: return false; } } static bool rockchip_i2s_tdm_rd_reg(struct device *dev, unsigned int reg) { switch (reg) { case I2S_TXCR: case I2S_RXCR: case I2S_CKR: case I2S_DMACR: case I2S_INTCR: case I2S_XFER: case I2S_CLR: case I2S_TXDR: case I2S_RXDR: case I2S_TXFIFOLR: case I2S_INTSR: case I2S_RXFIFOLR: case I2S_TDM_TXCR: case I2S_TDM_RXCR: case I2S_CLKDIV: return true; default: return false; } } static bool rockchip_i2s_tdm_volatile_reg(struct device *dev, unsigned int reg) { switch (reg) { case I2S_TXFIFOLR: case I2S_INTSR: case I2S_CLR: case I2S_TXDR: case I2S_RXDR: case I2S_RXFIFOLR: return true; default: return false; } } static bool rockchip_i2s_tdm_precious_reg(struct device *dev, unsigned int reg) { switch (reg) { case I2S_RXDR: return true; default: return false; } } static const struct reg_default rockchip_i2s_tdm_reg_defaults[] = { {0x00, 0x7200000f}, {0x04, 0x01c8000f}, {0x08, 0x00001f1f}, {0x10, 0x001f0000}, {0x14, 0x01f00000}, {0x30, 0x00003eff}, {0x34, 0x00003eff}, {0x38, 0x00000707}, }; static const struct regmap_config rockchip_i2s_tdm_regmap_config = { .reg_bits = 32, .reg_stride = 4, .val_bits = 32, .max_register = I2S_CLKDIV, .reg_defaults = rockchip_i2s_tdm_reg_defaults, .num_reg_defaults = ARRAY_SIZE(rockchip_i2s_tdm_reg_defaults), .writeable_reg = rockchip_i2s_tdm_wr_reg, .readable_reg = rockchip_i2s_tdm_rd_reg, .volatile_reg = rockchip_i2s_tdm_volatile_reg, .precious_reg = rockchip_i2s_tdm_precious_reg, .cache_type = REGCACHE_FLAT, }; static int common_soc_init(struct device *dev, u32 addr) { struct rk_i2s_tdm_dev *i2s_tdm = dev_get_drvdata(dev); const struct txrx_config *configs = i2s_tdm->soc_data->configs; u32 reg = 0, val = 0, trcm = i2s_tdm->clk_trcm; int i; switch (trcm) { case I2S_CKR_TRCM_TXONLY: /* fall through */ case I2S_CKR_TRCM_RXONLY: break; default: return 0; } for (i = 0; i < i2s_tdm->soc_data->config_count; i++) { if (addr != configs[i].addr) continue; reg = configs[i].reg; if (trcm == I2S_CKR_TRCM_TXONLY) val = configs[i].txonly; else val = configs[i].rxonly; if (reg) regmap_write(i2s_tdm->grf, reg, val); } return 0; } static const struct txrx_config px30_txrx_config[] = { { 0xff060000, 0x184, PX30_I2S0_CLK_TXONLY, PX30_I2S0_CLK_RXONLY }, }; static const struct txrx_config rk1808_txrx_config[] = { { 0xff7e0000, 0x190, RK1808_I2S0_CLK_TXONLY, RK1808_I2S0_CLK_RXONLY }, }; static const struct txrx_config rk3308_txrx_config[] = { { 0xff300000, 0x308, RK3308_I2S0_CLK_TXONLY, RK3308_I2S0_CLK_RXONLY }, { 0xff310000, 0x308, RK3308_I2S1_CLK_TXONLY, RK3308_I2S1_CLK_RXONLY }, }; static const struct txrx_config rk3568_txrx_config[] = { { 0xfe410000, 0x504, RK3568_I2S1_CLK_TXONLY, RK3568_I2S1_CLK_RXONLY }, { 0xfe430000, 0x504, RK3568_I2S3_CLK_TXONLY, RK3568_I2S3_CLK_RXONLY }, { 0xfe430000, 0x508, RK3568_I2S3_MCLK_TXONLY, RK3568_I2S3_MCLK_RXONLY }, }; static const struct txrx_config rv1126_txrx_config[] = { { 0xff800000, 0x10260, RV1126_I2S0_CLK_TXONLY, RV1126_I2S0_CLK_RXONLY }, }; static const struct rk_i2s_soc_data px30_i2s_soc_data = { .softrst_offset = 0x0300, .configs = px30_txrx_config, .config_count = ARRAY_SIZE(px30_txrx_config), .init = common_soc_init, }; static const struct rk_i2s_soc_data rk1808_i2s_soc_data = { .softrst_offset = 0x0300, .configs = rk1808_txrx_config, .config_count = ARRAY_SIZE(rk1808_txrx_config), .init = common_soc_init, }; static const struct rk_i2s_soc_data rk3308_i2s_soc_data = { .softrst_offset = 0x0400, .grf_reg_offset = 0x0308, .grf_shift = 5, .configs = rk3308_txrx_config, .config_count = ARRAY_SIZE(rk3308_txrx_config), .init = common_soc_init, }; static const struct rk_i2s_soc_data rk3568_i2s_soc_data = { .softrst_offset = 0x0400, .configs = rk3568_txrx_config, .config_count = ARRAY_SIZE(rk3568_txrx_config), .init = common_soc_init, }; static const struct rk_i2s_soc_data rv1126_i2s_soc_data = { .softrst_offset = 0x0300, .configs = rv1126_txrx_config, .config_count = ARRAY_SIZE(rv1126_txrx_config), .init = common_soc_init, }; static const struct of_device_id rockchip_i2s_tdm_match[] = { #ifdef CONFIG_CPU_PX30 { .compatible = "rockchip,px30-i2s-tdm", .data = &px30_i2s_soc_data }, #endif #ifdef CONFIG_CPU_RK1808 { .compatible = "rockchip,rk1808-i2s-tdm", .data = &rk1808_i2s_soc_data }, #endif #ifdef CONFIG_CPU_RK3308 { .compatible = "rockchip,rk3308-i2s-tdm", .data = &rk3308_i2s_soc_data }, #endif #ifdef CONFIG_CPU_RK3568 { .compatible = "rockchip,rk3568-i2s-tdm", .data = &rk3568_i2s_soc_data }, #endif #ifdef CONFIG_CPU_RV1126 { .compatible = "rockchip,rv1126-i2s-tdm", .data = &rv1126_i2s_soc_data }, #endif {}, }; #ifdef HAVE_SYNC_RESET static int of_i2s_resetid_get(struct device_node *node, const char *id) { struct of_phandle_args args; int index = 0; int ret; if (id) index = of_property_match_string(node, "reset-names", id); ret = of_parse_phandle_with_args(node, "resets", "#reset-cells", index, &args); if (ret) return ret; return args.args[0]; } #endif static int rockchip_i2s_tdm_dai_prepare(struct platform_device *pdev, struct snd_soc_dai_driver **soc_dai) { struct snd_soc_dai_driver rockchip_i2s_tdm_dai = { .probe = rockchip_i2s_tdm_dai_probe, .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 16, .rates = SNDRV_PCM_RATE_8000_192000, .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE), }, .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 16, .rates = SNDRV_PCM_RATE_8000_192000, .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE), }, .ops = &rockchip_i2s_tdm_dai_ops, }; *soc_dai = devm_kmemdup(&pdev->dev, &rockchip_i2s_tdm_dai, sizeof(rockchip_i2s_tdm_dai), GFP_KERNEL); if (!(*soc_dai)) return -ENOMEM; return 0; } static int rockchip_i2s_tdm_path_check(struct rk_i2s_tdm_dev *i2s_tdm, int num, bool is_rx_path) { unsigned int *i2s_data; int i, j, ret = 0; if (is_rx_path) i2s_data = i2s_tdm->i2s_sdis; else i2s_data = i2s_tdm->i2s_sdos; for (i = 0; i < num; i++) { if (i2s_data[i] > CH_GRP_MAX - 1) { dev_err(i2s_tdm->dev, "%s path i2s_data[%d]: %d is overflow, max is: %d\n", is_rx_path ? "RX" : "TX", i, i2s_data[i], CH_GRP_MAX); ret = -EINVAL; goto err; } for (j = 0; j < num; j++) { if (i == j) continue; if (i2s_data[i] == i2s_data[j]) { dev_err(i2s_tdm->dev, "%s path invalid routed i2s_data: [%d]%d == [%d]%d\n", is_rx_path ? "RX" : "TX", i, i2s_data[i], j, i2s_data[j]); ret = -EINVAL; goto err; } } } err: return ret; } static void rockchip_i2s_tdm_tx_path_config(struct rk_i2s_tdm_dev *i2s_tdm, int num) { int idx; for (idx = 0; idx < num; idx++) { regmap_update_bits(i2s_tdm->regmap, I2S_TXCR, I2S_TXCR_PATH_MASK(idx), I2S_TXCR_PATH(idx, i2s_tdm->i2s_sdos[idx])); } } static void rockchip_i2s_tdm_rx_path_config(struct rk_i2s_tdm_dev *i2s_tdm, int num) { int idx; for (idx = 0; idx < num; idx++) { regmap_update_bits(i2s_tdm->regmap, I2S_RXCR, I2S_RXCR_PATH_MASK(idx), I2S_RXCR_PATH(idx, i2s_tdm->i2s_sdis[idx])); } } static void rockchip_i2s_tdm_path_config(struct rk_i2s_tdm_dev *i2s_tdm, int num, bool is_rx_path) { if (is_rx_path) rockchip_i2s_tdm_rx_path_config(i2s_tdm, num); else rockchip_i2s_tdm_tx_path_config(i2s_tdm, num); } static int rockchip_i2s_tdm_path_prepare(struct rk_i2s_tdm_dev *i2s_tdm, struct device_node *np, bool is_rx_path) { char *i2s_tx_path_prop = "rockchip,i2s-tx-route"; char *i2s_rx_path_prop = "rockchip,i2s-rx-route"; char *i2s_path_prop; unsigned int *i2s_data; int num, ret = 0; if (is_rx_path) { i2s_path_prop = i2s_rx_path_prop; i2s_data = i2s_tdm->i2s_sdis; } else { i2s_path_prop = i2s_tx_path_prop; i2s_data = i2s_tdm->i2s_sdos; } num = of_count_phandle_with_args(np, i2s_path_prop, NULL); if (num < 0) { if (num != -ENOENT) { dev_err(i2s_tdm->dev, "Failed to read '%s' num: %d\n", i2s_path_prop, num); ret = num; } goto out; } else if (num != CH_GRP_MAX) { dev_err(i2s_tdm->dev, "The num: %d should be: %d\n", num, CH_GRP_MAX); ret = -EINVAL; goto out; } ret = of_property_read_u32_array(np, i2s_path_prop, i2s_data, num); if (ret < 0) { dev_err(i2s_tdm->dev, "Failed to read '%s': %d\n", i2s_path_prop, ret); goto out; } ret = rockchip_i2s_tdm_path_check(i2s_tdm, num, is_rx_path); if (ret < 0) { dev_err(i2s_tdm->dev, "Failed to check i2s data bus: %d\n", ret); goto out; } rockchip_i2s_tdm_path_config(i2s_tdm, num, is_rx_path); out: return ret; } static int rockchip_i2s_tdm_tx_path_prepare(struct rk_i2s_tdm_dev *i2s_tdm, struct device_node *np) { return rockchip_i2s_tdm_path_prepare(i2s_tdm, np, 0); } static int rockchip_i2s_tdm_rx_path_prepare(struct rk_i2s_tdm_dev *i2s_tdm, struct device_node *np) { return rockchip_i2s_tdm_path_prepare(i2s_tdm, np, 1); } static int rockchip_i2s_tdm_probe(struct platform_device *pdev) { struct device_node *node = pdev->dev.of_node; const struct of_device_id *of_id; struct rk_i2s_tdm_dev *i2s_tdm; struct snd_soc_dai_driver *soc_dai; struct resource *res; void __iomem *regs; #ifdef HAVE_SYNC_RESET bool sync; #endif int ret; int val; ret = rockchip_i2s_tdm_dai_prepare(pdev, &soc_dai); if (ret) return ret; i2s_tdm = devm_kzalloc(&pdev->dev, sizeof(*i2s_tdm), GFP_KERNEL); if (!i2s_tdm) return -ENOMEM; i2s_tdm->dev = &pdev->dev; of_id = of_match_device(rockchip_i2s_tdm_match, &pdev->dev); if (!of_id || !of_id->data) return -EINVAL; spin_lock_init(&i2s_tdm->lock); i2s_tdm->soc_data = (const struct rk_i2s_soc_data *)of_id->data; i2s_tdm->bclk_fs = 64; if (!of_property_read_u32(node, "rockchip,bclk-fs", &val)) { if ((val >= 32) && (val % 2 == 0)) i2s_tdm->bclk_fs = val; } i2s_tdm->clk_trcm = I2S_CKR_TRCM_TXRX; if (!of_property_read_u32(node, "rockchip,clk-trcm", &val)) { if (val >= 0 && val <= 2) { i2s_tdm->clk_trcm = val << I2S_CKR_TRCM_SHIFT; if (i2s_tdm->clk_trcm) soc_dai->symmetric_rates = 1; } } i2s_tdm->tdm_fsync_half_frame = of_property_read_bool(node, "rockchip,tdm-fsync-half-frame"); if (of_property_read_bool(node, "rockchip,playback-only")) soc_dai->capture.channels_min = 0; else if (of_property_read_bool(node, "rockchip,capture-only")) soc_dai->playback.channels_min = 0; i2s_tdm->grf = syscon_regmap_lookup_by_phandle(node, "rockchip,grf"); if (IS_ERR(i2s_tdm->grf)) return PTR_ERR(i2s_tdm->grf); #ifdef HAVE_SYNC_RESET sync = of_device_is_compatible(node, "rockchip,px30-i2s-tdm") || of_device_is_compatible(node, "rockchip,rk1808-i2s-tdm") || of_device_is_compatible(node, "rockchip,rk3308-i2s-tdm"); if (i2s_tdm->clk_trcm && sync) { struct device_node *cru_node; cru_node = of_parse_phandle(node, "rockchip,cru", 0); i2s_tdm->cru_base = of_iomap(cru_node, 0); if (!i2s_tdm->cru_base) return -ENOENT; i2s_tdm->tx_reset_id = of_i2s_resetid_get(node, "tx-m"); i2s_tdm->rx_reset_id = of_i2s_resetid_get(node, "rx-m"); } #endif i2s_tdm->tx_reset = devm_reset_control_get(&pdev->dev, "tx-m"); if (IS_ERR(i2s_tdm->tx_reset)) { ret = PTR_ERR(i2s_tdm->tx_reset); if (ret != -ENOENT) return ret; } i2s_tdm->rx_reset = devm_reset_control_get(&pdev->dev, "rx-m"); if (IS_ERR(i2s_tdm->rx_reset)) { ret = PTR_ERR(i2s_tdm->rx_reset); if (ret != -ENOENT) return ret; } i2s_tdm->hclk = devm_clk_get(&pdev->dev, "hclk"); if (IS_ERR(i2s_tdm->hclk)) return PTR_ERR(i2s_tdm->hclk); ret = clk_prepare_enable(i2s_tdm->hclk); if (ret) return ret; i2s_tdm->mclk_tx = devm_clk_get(&pdev->dev, "mclk_tx"); if (IS_ERR(i2s_tdm->mclk_tx)) return PTR_ERR(i2s_tdm->mclk_tx); i2s_tdm->mclk_rx = devm_clk_get(&pdev->dev, "mclk_rx"); if (IS_ERR(i2s_tdm->mclk_rx)) return PTR_ERR(i2s_tdm->mclk_rx); i2s_tdm->io_multiplex = of_property_read_bool(node, "rockchip,io-multiplex"); i2s_tdm->mclk_calibrate = of_property_read_bool(node, "rockchip,mclk-calibrate"); if (i2s_tdm->mclk_calibrate) { i2s_tdm->mclk_tx_src = devm_clk_get(&pdev->dev, "mclk_tx_src"); if (IS_ERR(i2s_tdm->mclk_tx_src)) return PTR_ERR(i2s_tdm->mclk_tx_src); i2s_tdm->mclk_rx_src = devm_clk_get(&pdev->dev, "mclk_rx_src"); if (IS_ERR(i2s_tdm->mclk_rx_src)) return PTR_ERR(i2s_tdm->mclk_rx_src); i2s_tdm->mclk_root0 = devm_clk_get(&pdev->dev, "mclk_root0"); if (IS_ERR(i2s_tdm->mclk_root0)) return PTR_ERR(i2s_tdm->mclk_root0); i2s_tdm->mclk_root1 = devm_clk_get(&pdev->dev, "mclk_root1"); if (IS_ERR(i2s_tdm->mclk_root1)) return PTR_ERR(i2s_tdm->mclk_root1); i2s_tdm->mclk_root0_initial_freq = clk_get_rate(i2s_tdm->mclk_root0); i2s_tdm->mclk_root1_initial_freq = clk_get_rate(i2s_tdm->mclk_root1); i2s_tdm->mclk_root0_freq = i2s_tdm->mclk_root0_initial_freq; i2s_tdm->mclk_root1_freq = i2s_tdm->mclk_root1_initial_freq; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); regs = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(regs)) return PTR_ERR(regs); i2s_tdm->regmap = devm_regmap_init_mmio(&pdev->dev, regs, &rockchip_i2s_tdm_regmap_config); if (IS_ERR(i2s_tdm->regmap)) return PTR_ERR(i2s_tdm->regmap); i2s_tdm->playback_dma_data.addr = res->start + I2S_TXDR; i2s_tdm->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; i2s_tdm->playback_dma_data.maxburst = 8; i2s_tdm->capture_dma_data.addr = res->start + I2S_RXDR; i2s_tdm->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; i2s_tdm->capture_dma_data.maxburst = 8; ret = rockchip_i2s_tdm_tx_path_prepare(i2s_tdm, node); if (ret < 0) { dev_err(&pdev->dev, "I2S TX path prepare failed: %d\n", ret); return ret; } ret = rockchip_i2s_tdm_rx_path_prepare(i2s_tdm, node); if (ret < 0) { dev_err(&pdev->dev, "I2S RX path prepare failed: %d\n", ret); return ret; } atomic_set(&i2s_tdm->refcount, 0); dev_set_drvdata(&pdev->dev, i2s_tdm); pm_runtime_enable(&pdev->dev); if (!pm_runtime_enabled(&pdev->dev)) { ret = i2s_tdm_runtime_resume(&pdev->dev); if (ret) goto err_pm_disable; } regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_TDL_MASK, I2S_DMACR_TDL(16)); regmap_update_bits(i2s_tdm->regmap, I2S_DMACR, I2S_DMACR_RDL_MASK, I2S_DMACR_RDL(16)); regmap_update_bits(i2s_tdm->regmap, I2S_CKR, I2S_CKR_TRCM_MASK, i2s_tdm->clk_trcm); if (i2s_tdm->soc_data && i2s_tdm->soc_data->init) i2s_tdm->soc_data->init(&pdev->dev, res->start); ret = devm_snd_soc_register_component(&pdev->dev, &rockchip_i2s_tdm_component, soc_dai, 1); if (ret) { dev_err(&pdev->dev, "Could not register DAI\n"); goto err_suspend; } if (of_property_read_bool(node, "rockchip,no-dmaengine")) return ret; ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); if (ret) { dev_err(&pdev->dev, "Could not register PCM\n"); return ret; } return 0; err_suspend: if (!pm_runtime_status_suspended(&pdev->dev)) i2s_tdm_runtime_suspend(&pdev->dev); err_pm_disable: pm_runtime_disable(&pdev->dev); return ret; } static int rockchip_i2s_tdm_remove(struct platform_device *pdev) { struct rk_i2s_tdm_dev *i2s_tdm = dev_get_drvdata(&pdev->dev); pm_runtime_disable(&pdev->dev); if (!pm_runtime_status_suspended(&pdev->dev)) i2s_tdm_runtime_suspend(&pdev->dev); if (!IS_ERR(i2s_tdm->mclk_tx)) clk_prepare_enable(i2s_tdm->mclk_tx); if (!IS_ERR(i2s_tdm->mclk_rx)) clk_prepare_enable(i2s_tdm->mclk_rx); if (!IS_ERR(i2s_tdm->hclk)) clk_disable_unprepare(i2s_tdm->hclk); return 0; } #ifdef CONFIG_PM_SLEEP static int rockchip_i2s_tdm_suspend(struct device *dev) { struct rk_i2s_tdm_dev *i2s_tdm = dev_get_drvdata(dev); regcache_mark_dirty(i2s_tdm->regmap); return 0; } static int rockchip_i2s_tdm_resume(struct device *dev) { struct rk_i2s_tdm_dev *i2s_tdm = dev_get_drvdata(dev); int ret; ret = pm_runtime_get_sync(dev); if (ret < 0) return ret; ret = regcache_sync(i2s_tdm->regmap); pm_runtime_put(dev); return ret; } #endif static const struct dev_pm_ops rockchip_i2s_tdm_pm_ops = { SET_RUNTIME_PM_OPS(i2s_tdm_runtime_suspend, i2s_tdm_runtime_resume, NULL) SET_SYSTEM_SLEEP_PM_OPS(rockchip_i2s_tdm_suspend, rockchip_i2s_tdm_resume) }; static struct platform_driver rockchip_i2s_tdm_driver = { .probe = rockchip_i2s_tdm_probe, .remove = rockchip_i2s_tdm_remove, .driver = { .name = DRV_NAME, .of_match_table = of_match_ptr(rockchip_i2s_tdm_match), .pm = &rockchip_i2s_tdm_pm_ops, }, }; module_platform_driver(rockchip_i2s_tdm_driver); MODULE_DESCRIPTION("ROCKCHIP I2S/TDM ASoC Interface"); MODULE_AUTHOR("Sugar Zhang "); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:" DRV_NAME); MODULE_DEVICE_TABLE(of, rockchip_i2s_tdm_match);