From: Viorel Suman viorel.suman@nxp.com

XCVR (Audio Transceiver) is a on-chip functional module found on i.MX8MP. It support HDMI2.1 eARC, HDMI1.4 ARC and SPDIF.

Signed-off-by: Viorel Suman viorel.suman@nxp.com --- sound/soc/fsl/Kconfig | 10 + sound/soc/fsl/Makefile | 2 + sound/soc/fsl/fsl_xcvr.c | 1352 ++++++++++++++++++++++++++++++++++++++++++++++ sound/soc/fsl/fsl_xcvr.h | 266 +++++++++ 4 files changed, 1630 insertions(+) create mode 100644 sound/soc/fsl/fsl_xcvr.c create mode 100644 sound/soc/fsl/fsl_xcvr.h

diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig index 3f76ff7..d04b64d 100644 --- a/sound/soc/fsl/Kconfig +++ b/sound/soc/fsl/Kconfig @@ -95,6 +95,16 @@ config SND_SOC_FSL_EASRC destination sample rate. It is a new design module compare with the old ASRC.

+config SND_SOC_FSL_XCVR + tristate "NXP Audio Transceiver (XCVR) module support" + select REGMAP_MMIO + select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n + select SND_SOC_GENERIC_DMAENGINE_PCM + help + Say Y if you want to add Audio Transceiver (XCVR) support for NXP + iMX CPUs. XCVR is a digital module that supports HDMI2.1 eARC, + HDMI1.4 ARC and SPDIF. + config SND_SOC_FSL_UTILS tristate

diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile index b835eeb..1d2231f 100644 --- a/sound/soc/fsl/Makefile +++ b/sound/soc/fsl/Makefile @@ -25,6 +25,7 @@ snd-soc-fsl-utils-objs := fsl_utils.o snd-soc-fsl-dma-objs := fsl_dma.o snd-soc-fsl-mqs-objs := fsl_mqs.o snd-soc-fsl-easrc-objs := fsl_easrc.o +snd-soc-fsl-xcvr-objs := fsl_xcvr.o

obj-$(CONFIG_SND_SOC_FSL_AUDMIX) += snd-soc-fsl-audmix.o obj-$(CONFIG_SND_SOC_FSL_ASOC_CARD) += snd-soc-fsl-asoc-card.o @@ -38,6 +39,7 @@ obj-$(CONFIG_SND_SOC_FSL_UTILS) += snd-soc-fsl-utils.o obj-$(CONFIG_SND_SOC_FSL_MQS) += snd-soc-fsl-mqs.o obj-$(CONFIG_SND_SOC_FSL_EASRC) += snd-soc-fsl-easrc.o obj-$(CONFIG_SND_SOC_POWERPC_DMA) += snd-soc-fsl-dma.o +obj-$(CONFIG_SND_SOC_FSL_XCVR) += snd-soc-fsl-xcvr.o

# MPC5200 Platform Support obj-$(CONFIG_SND_MPC52xx_DMA) += mpc5200_dma.o diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c new file mode 100644 index 00000000..2e66f22 --- /dev/null +++ b/sound/soc/fsl/fsl_xcvr.c @@ -0,0 +1,1352 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright 2019 NXP + +#include <linux/bitrev.h> +#include <linux/clk.h> +#include <linux/firmware.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/reset.h> +#include <sound/dmaengine_pcm.h> +#include <sound/pcm_iec958.h> +#include <sound/pcm_params.h> + +#include "fsl_xcvr.h" +#include "imx-pcm.h" + +#define FSL_XCVR_CAPDS_SIZE 256 + +struct fsl_xcvr { + struct platform_device *pdev; + struct regmap *regmap; + struct clk *ipg_clk; + struct clk *pll_ipg_clk; + struct clk *phy_clk; + struct clk *spba_clk; + struct reset_control *reset; + const char *fw_name; + u8 streams; + u32 mode; + u32 arc_mode; + void __iomem *ram_addr; + struct snd_dmaengine_dai_dma_data dma_prms_rx; + struct snd_dmaengine_dai_dma_data dma_prms_tx; + struct snd_aes_iec958 rx_iec958; + struct snd_aes_iec958 tx_iec958; + u8 cap_ds[FSL_XCVR_CAPDS_SIZE]; +}; + +static const struct fsl_xcvr_pll_conf { + u8 mfi; /* min=0x18, max=0x38 */ + u32 mfn; /* signed int, 2's compl., min=0x3FFF0000, max=0x00010000 */ + u32 mfd; /* unsigned int */ + u32 fout; /* Fout = Fref*(MFI + MFN/MFD), Fref is 24MHz */ +} fsl_xcvr_pll_cfg[] = { + { .mfi = 54, .mfn = 1, .mfd = 6, .fout = 1300000000, }, /* 1.3 GHz */ + { .mfi = 32, .mfn = 96, .mfd = 125, .fout = 786432000, }, /* 8000 Hz */ + { .mfi = 30, .mfn = 66, .mfd = 625, .fout = 722534400, }, /* 11025 Hz */ + { .mfi = 29, .mfn = 1, .mfd = 6, .fout = 700000000, }, /* 700 MHz */ +}; + +static const u32 fsl_xcvr_earc_channels[] = { 1, 2, 8, 16, 32, }; /* one bit 6, 12 ? */ +static const struct snd_pcm_hw_constraint_list fsl_xcvr_earc_channels_constr = { + .count = ARRAY_SIZE(fsl_xcvr_earc_channels), + .list = fsl_xcvr_earc_channels, +}; + +static const u32 fsl_xcvr_earc_rates[] = { + 32000, 44100, 48000, 64000, 88200, 96000, + 128000, 176400, 192000, 256000, 352800, 384000, + 512000, 705600, 768000, 1024000, 1411200, 1536000, +}; +static const struct snd_pcm_hw_constraint_list fsl_xcvr_earc_rates_constr = { + .count = ARRAY_SIZE(fsl_xcvr_earc_rates), + .list = fsl_xcvr_earc_rates, +}; + +static const u32 fsl_xcvr_spdif_channels[] = { 2, }; +static const struct snd_pcm_hw_constraint_list fsl_xcvr_spdif_channels_constr = { + .count = ARRAY_SIZE(fsl_xcvr_spdif_channels), + .list = fsl_xcvr_spdif_channels, +}; + +static const u32 fsl_xcvr_spdif_rates[] = { + 32000, 44100, 48000, 88200, 96000, 176400, 192000, +}; +static const struct snd_pcm_hw_constraint_list fsl_xcvr_spdif_rates_constr = { + .count = ARRAY_SIZE(fsl_xcvr_spdif_rates), + .list = fsl_xcvr_spdif_rates, +}; + +static int fsl_xcvr_arc_mode_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; + unsigned int *item = ucontrol->value.enumerated.item; + + xcvr->arc_mode = snd_soc_enum_item_to_val(e, item[0]); + + return 0; +} + +static int fsl_xcvr_arc_mode_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + + ucontrol->value.enumerated.item[0] = xcvr->arc_mode; + + return 0; +} + +static const int fsl_xcvr_phy_arc_cfg[] = { + FSL_XCVR_PHY_CTRL_ARC_MODE_SE_EN, FSL_XCVR_PHY_CTRL_ARC_MODE_CM_EN, +}; + +static const char * const fsl_xcvr_arc_mode[] = { "Single Ended", "Common", }; +static const struct soc_enum fsl_xcvr_arc_mode_enum = + SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(fsl_xcvr_arc_mode), fsl_xcvr_arc_mode); +static struct snd_kcontrol_new fsl_xcvr_arc_mode_kctl = + SOC_ENUM_EXT("ARC Mode", fsl_xcvr_arc_mode_enum, + fsl_xcvr_arc_mode_get, fsl_xcvr_arc_mode_put); + +/* Capabilities data structure, bytes */ +static int fsl_xcvr_type_capds_bytes_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; + uinfo->count = FSL_XCVR_CAPDS_SIZE; + + return 0; +} + +static int fsl_xcvr_capds_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + + memcpy(ucontrol->value.bytes.data, xcvr->cap_ds, FSL_XCVR_CAPDS_SIZE); + + return 0; +} + +static int fsl_xcvr_capds_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + + memcpy(xcvr->cap_ds, ucontrol->value.bytes.data, FSL_XCVR_CAPDS_SIZE); + + return 0; +} + +static struct snd_kcontrol_new fsl_xcvr_earc_capds_kctl = { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "Capabilities Data Structure", + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, + .info = fsl_xcvr_type_capds_bytes_info, + .get = fsl_xcvr_capds_get, + .put = fsl_xcvr_capds_put, +}; + +static int fsl_xcvr_activate_ctl(struct snd_soc_dai *dai, const char *name, + bool active) +{ + struct snd_soc_card *card = dai->component->card; + struct snd_kcontrol *kctl; + bool enabled; + + kctl = snd_soc_card_get_kcontrol(card, name); + if (kctl == NULL) + return -ENOENT; + + enabled = ((kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_WRITE) != 0); + if (active == enabled) + return 0; /* nothing to do */ + + if (active) + kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_WRITE; + else + kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_WRITE; + + snd_ctl_notify(card->snd_card, SNDRV_CTL_EVENT_MASK_INFO, &kctl->id); + + return 1; +} + +static int fsl_xcvr_mode_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; + unsigned int *item = ucontrol->value.enumerated.item; + struct snd_soc_card *card = dai->component->card; + struct snd_soc_pcm_runtime *rtd; + + xcvr->mode = snd_soc_enum_item_to_val(e, item[0]); + + fsl_xcvr_activate_ctl(dai, fsl_xcvr_arc_mode_kctl.name, + (xcvr->mode == FSL_XCVR_MODE_ARC)); + fsl_xcvr_activate_ctl(dai, fsl_xcvr_earc_capds_kctl.name, + (xcvr->mode == FSL_XCVR_MODE_EARC)); + /* Allow playback for SPDIF only */ + rtd = snd_soc_get_pcm_runtime(card, card->dai_link); + rtd->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count = + (xcvr->mode == FSL_XCVR_MODE_SPDIF ? 1 : 0); + return 0; +} + +static int fsl_xcvr_mode_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + + ucontrol->value.enumerated.item[0] = xcvr->mode; + + return 0; +} + +static const char * const fsl_xcvr_mode[] = { "SPDIF", "ARC RX", "eARC", }; +static const struct soc_enum fsl_xcvr_mode_enum = + SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(fsl_xcvr_mode), fsl_xcvr_mode); +static struct snd_kcontrol_new fsl_xcvr_mode_kctl = + SOC_ENUM_EXT("XCVR Mode", fsl_xcvr_mode_enum, + fsl_xcvr_mode_get, fsl_xcvr_mode_put); + +/** phy: true => phy, false => pll */ +static int fsl_xcvr_ai_write(struct fsl_xcvr *xcvr, u8 reg, u32 data, bool phy) +{ + u32 val, idx, tidx; + + idx = BIT(phy ? 26 : 24); + tidx = BIT(phy ? 27 : 25); + + regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_CLR, 0xFF); + regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_SET, reg); + regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_WDATA, data); + regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_TOG, idx); + + do { + regmap_read(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL, &val); + } while ((val & idx) != ((val & tidx) >> 1)); + + return 0; +} + +static int fsl_xcvr_en_phy_pll(struct fsl_xcvr *xcvr, u32 freq, bool tx) +{ + struct device *dev = &xcvr->pdev->dev; + u32 i, div = 0, log2; + int ret; + + for (i = 0; i < ARRAY_SIZE(fsl_xcvr_pll_cfg); i++) { + if (fsl_xcvr_pll_cfg[i].fout % freq == 0) { + div = fsl_xcvr_pll_cfg[i].fout / freq; + break; + } + } + + if (!div || i >= ARRAY_SIZE(fsl_xcvr_pll_cfg)) + return -EINVAL; + + log2 = ilog2(div); + + /* Release AI interface from reset */ + ret = regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_SET, + FSL_XCVR_PHY_AI_CTRL_AI_RESETN); + if (ret < 0) { + dev_err(dev, "Error while setting IER0: %d\n", ret); + return ret; + } + + /* PLL: BANDGAP_SET: EN_VBG (enable bandgap) */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_BANDGAP_SET, + FSL_XCVR_PLL_BANDGAP_EN_VBG, 0); + + /* PLL: CTRL0: DIV_INTEGER */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0, fsl_xcvr_pll_cfg[i].mfi, 0); + /* PLL: NUMERATOR: MFN */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_NUM, fsl_xcvr_pll_cfg[i].mfn, 0); + /* PLL: DENOMINATOR: MFD */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_DEN, fsl_xcvr_pll_cfg[i].mfd, 0); + /* PLL: CTRL0_SET: HOLD_RING_OFF, POWER_UP */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_SET, + FSL_XCVR_PLL_CTRL0_HROFF | FSL_XCVR_PLL_CTRL0_PWP, 0); + udelay(25); + /* PLL: CTRL0: Clear Hold Ring Off */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_CLR, + FSL_XCVR_PLL_CTRL0_HROFF, 0); + udelay(100); + if (tx) { /* TX is enabled for SPDIF only */ + /* PLL: POSTDIV: PDIV0 */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_PDIV, + FSL_XCVR_PLL_PDIVx(log2, 0), 0); + /* PLL: CTRL_SET: CLKMUX0_EN */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_SET, + FSL_XCVR_PLL_CTRL0_CM0_EN, 0); + } else if (xcvr->mode == FSL_XCVR_MODE_EARC) { /* eARC RX */ + /* PLL: POSTDIV: PDIV1 */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_PDIV, + FSL_XCVR_PLL_PDIVx(log2, 1), 0); + /* PLL: CTRL_SET: CLKMUX1_EN */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_SET, + FSL_XCVR_PLL_CTRL0_CM1_EN, 0); + } else { /* SPDIF / ARC RX */ + /* PLL: POSTDIV: PDIV2 */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_PDIV, + FSL_XCVR_PLL_PDIVx(log2, 2), 0); + /* PLL: CTRL_SET: CLKMUX2_EN */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_SET, + FSL_XCVR_PLL_CTRL0_CM2_EN, 0); + } + + if (xcvr->mode == FSL_XCVR_MODE_EARC) { /* eARC mode */ + /* PHY: CTRL_SET: TX_DIFF_OE, PHY_EN */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, + FSL_XCVR_PHY_CTRL_TSDIFF_OE | + FSL_XCVR_PHY_CTRL_PHY_EN, 1); + /* PHY: CTRL2_SET: EARC_TX_MODE */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL2_SET, + FSL_XCVR_PHY_CTRL2_EARC_TXMS, 1); + } else if (!tx) { /* SPDIF / ARC RX mode */ + if (xcvr->mode == FSL_XCVR_MODE_SPDIF) + /* PHY: CTRL_SET: SPDIF_EN */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, + FSL_XCVR_PHY_CTRL_SPDIF_EN, 1); + else /* PHY: CTRL_SET: ARC RX setup */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, + FSL_XCVR_PHY_CTRL_PHY_EN | + FSL_XCVR_PHY_CTRL_RX_CM_EN | + fsl_xcvr_phy_arc_cfg[xcvr->arc_mode], 1); + } + + dev_dbg(dev, "PLL Fexp: %u, Fout: %u, mfi: %u, mfn: %u, mfd: %d, div: %u, pdiv0: %u\n", + freq, fsl_xcvr_pll_cfg[i].fout, fsl_xcvr_pll_cfg[i].mfi, + fsl_xcvr_pll_cfg[i].mfn, fsl_xcvr_pll_cfg[i].mfd, div, log2); + return 0; +} + +static int fsl_xcvr_en_aud_pll(struct fsl_xcvr *xcvr, u32 freq) +{ + struct device *dev = &xcvr->pdev->dev; + int ret; + + clk_disable_unprepare(xcvr->phy_clk); + ret = clk_set_rate(xcvr->phy_clk, freq); + if (ret < 0) { + dev_err(dev, "Error while setting AUD PLL rate: %d\n", ret); + return ret; + } + ret = clk_prepare_enable(xcvr->phy_clk); + if (ret) { + dev_err(dev, "failed to start PHY clock: %d\n", ret); + return ret; + } + + /* Release AI interface from reset */ + ret = regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_SET, + FSL_XCVR_PHY_AI_CTRL_AI_RESETN); + if (ret < 0) { + dev_err(dev, "Error while setting IER0: %d\n", ret); + return ret; + } + + if (xcvr->mode == FSL_XCVR_MODE_EARC) { /* eARC mode */ + /* PHY: CTRL_SET: TX_DIFF_OE, PHY_EN */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, + FSL_XCVR_PHY_CTRL_TSDIFF_OE | + FSL_XCVR_PHY_CTRL_PHY_EN, 1); + /* PHY: CTRL2_SET: EARC_TX_MODE */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL2_SET, + FSL_XCVR_PHY_CTRL2_EARC_TXMS, 1); + } else { /* SPDIF mode */ + /* PHY: CTRL_SET: TX_CLK_AUD_SS | SPDIF_EN */ + fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, + FSL_XCVR_PHY_CTRL_TX_CLK_AUD_SS | + FSL_XCVR_PHY_CTRL_SPDIF_EN, 1); + } + + dev_dbg(dev, "PLL Fexp: %u\n", freq); + + return 0; +} + +#define FSL_XCVR_SPDIF_RX_FREQ 175000000 +static int fsl_xcvr_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + u32 m_ctl = 0, v_ctl = 0; + u32 r = substream->runtime->rate, ch = substream->runtime->channels; + u32 fout = 32 * r * ch * 10 * 2; + int ret = 0; + + switch (xcvr->mode) { + case FSL_XCVR_MODE_SPDIF: + case FSL_XCVR_MODE_ARC: + if (tx) { + ret = fsl_xcvr_en_aud_pll(xcvr, fout); + if (ret < 0) { + dev_err(dai->dev, "Failed to set TX freq %u: %d\n", + fout, ret); + return ret; + } + + ret = regmap_write(xcvr->regmap, FSL_XCVR_TX_DPTH_CTRL_SET, + FSL_XCVR_TX_DPTH_CTRL_FRM_FMT); + if (ret < 0) { + dev_err(dai->dev, "Failed to set TX_DPTH: %d\n", ret); + return ret; + } + + /** + * set SPDIF MODE - this flag is used to gate + * SPDIF output, useless for SPDIF RX + */ + m_ctl |= FSL_XCVR_EXT_CTRL_SPDIF_MODE; + v_ctl |= FSL_XCVR_EXT_CTRL_SPDIF_MODE; + } else { + /** + * Clear RX FIFO, flip RX FIFO bits, + * disable eARC related HW mode detects + */ + ret = regmap_write(xcvr->regmap, FSL_XCVR_RX_DPTH_CTRL_SET, + FSL_XCVR_RX_DPTH_CTRL_STORE_FMT | + FSL_XCVR_RX_DPTH_CTRL_CLR_RX_FIFO | + FSL_XCVR_RX_DPTH_CTRL_COMP | + FSL_XCVR_RX_DPTH_CTRL_LAYB_CTRL); + if (ret < 0) { + dev_err(dai->dev, "Failed to set RX_DPTH: %d\n", ret); + return ret; + } + + ret = fsl_xcvr_en_phy_pll(xcvr, FSL_XCVR_SPDIF_RX_FREQ, tx); + if (ret < 0) { + dev_err(dai->dev, "Failed to set RX freq %u: %d\n", + FSL_XCVR_SPDIF_RX_FREQ, ret); + return ret; + } + } + break; + case FSL_XCVR_MODE_EARC: + if (!tx) { + /** Clear RX FIFO, flip RX FIFO bits */ + ret = regmap_write(xcvr->regmap, FSL_XCVR_RX_DPTH_CTRL_SET, + FSL_XCVR_RX_DPTH_CTRL_STORE_FMT | + FSL_XCVR_RX_DPTH_CTRL_CLR_RX_FIFO); + if (ret < 0) { + dev_err(dai->dev, "Failed to set RX_DPTH: %d\n", ret); + return ret; + } + + /** Enable eARC related HW mode detects */ + ret = regmap_write(xcvr->regmap, FSL_XCVR_RX_DPTH_CTRL_CLR, + FSL_XCVR_RX_DPTH_CTRL_COMP | + FSL_XCVR_RX_DPTH_CTRL_LAYB_CTRL); + if (ret < 0) { + dev_err(dai->dev, "Failed to clr TX_DPTH: %d\n", ret); + return ret; + } + } + + /* clear CMDC RESET */ + m_ctl |= FSL_XCVR_EXT_CTRL_CMDC_RESET(tx); + /* set TX_RX_MODE */ + m_ctl |= FSL_XCVR_EXT_CTRL_TX_RX_MODE; + v_ctl |= (tx ? FSL_XCVR_EXT_CTRL_TX_RX_MODE : 0); + break; + } + + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0, + FSL_XCVR_IRQ_EARC_ALL, FSL_XCVR_IRQ_EARC_ALL); + if (ret < 0) { + dev_err(dai->dev, "Error while setting IER0: %d\n", ret); + return ret; + } + + /* clear DPATH RESET */ + m_ctl |= FSL_XCVR_EXT_CTRL_DPTH_RESET(tx); + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, m_ctl, v_ctl); + if (ret < 0) { + dev_err(dai->dev, "Error while setting EXT_CTRL: %d\n", ret); + return ret; + } + + return 0; +} + +static int fsl_xcvr_constr(const struct snd_pcm_substream *substream, + const struct snd_pcm_hw_constraint_list *channels, + const struct snd_pcm_hw_constraint_list *rates) +{ + struct snd_pcm_runtime *rt = substream->runtime; + int ret; + + ret = snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_CHANNELS, + channels); + if (ret < 0) + return ret; + + ret = snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE, + rates); + if (ret < 0) + return ret; + + return 0; +} + +static int fsl_xcvr_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + int ret = 0; + + if (xcvr->streams & BIT(substream->stream)) { + dev_err(dai->dev, "%sX busy\n", tx ? "T" : "R"); + return -EBUSY; + } + + switch (xcvr->mode) { + case FSL_XCVR_MODE_SPDIF: + case FSL_XCVR_MODE_ARC: + ret = fsl_xcvr_constr(substream, &fsl_xcvr_spdif_channels_constr, + &fsl_xcvr_spdif_rates_constr); + break; + case FSL_XCVR_MODE_EARC: + ret = fsl_xcvr_constr(substream, &fsl_xcvr_earc_channels_constr, + &fsl_xcvr_earc_rates_constr); + break; + } + if (ret < 0) + return ret; + + xcvr->streams |= BIT(substream->stream); + + /* Disable XCVR controls if there is stream started */ + fsl_xcvr_activate_ctl(dai, fsl_xcvr_mode_kctl.name, false); + fsl_xcvr_activate_ctl(dai, fsl_xcvr_arc_mode_kctl.name, false); + fsl_xcvr_activate_ctl(dai, fsl_xcvr_earc_capds_kctl.name, false); + + return 0; +} + +static void fsl_xcvr_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + u32 mask = 0, val = 0; + int ret; + + xcvr->streams &= ~BIT(substream->stream); + + /* Enable XCVR controls if there is no stream started */ + if (!xcvr->streams) { + fsl_xcvr_activate_ctl(dai, fsl_xcvr_mode_kctl.name, true); + fsl_xcvr_activate_ctl(dai, fsl_xcvr_arc_mode_kctl.name, + (xcvr->mode == FSL_XCVR_MODE_ARC)); + fsl_xcvr_activate_ctl(dai, fsl_xcvr_earc_capds_kctl.name, + (xcvr->mode == FSL_XCVR_MODE_EARC)); + + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0, + FSL_XCVR_IRQ_EARC_ALL, 0); + if (ret < 0) { + dev_err(dai->dev, "Failed to set IER0: %d\n", ret); + return; + } + + /* clear SPDIF MODE */ + if (xcvr->mode == FSL_XCVR_MODE_SPDIF) + mask |= FSL_XCVR_EXT_CTRL_SPDIF_MODE; + } + + if (xcvr->mode == FSL_XCVR_MODE_EARC) { + /* set CMDC RESET */ + mask |= FSL_XCVR_EXT_CTRL_CMDC_RESET(tx); + val |= FSL_XCVR_EXT_CTRL_CMDC_RESET(tx); + } + + /* set DPATH RESET */ + mask |= FSL_XCVR_EXT_CTRL_DPTH_RESET(tx); + val |= FSL_XCVR_EXT_CTRL_DPTH_RESET(tx); + + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, mask, val); + if (ret < 0) { + dev_err(dai->dev, "Err setting DPATH RESET: %d\n", ret); + return; + } +} + +static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + int ret; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (tx) { + switch (xcvr->mode) { + case FSL_XCVR_MODE_EARC: + /* set isr_cmdc_tx_en, w1c */ + ret = regmap_write(xcvr->regmap, + FSL_XCVR_ISR_SET, + FSL_XCVR_ISR_CMDC_TX_EN); + if (ret < 0) { + dev_err(dai->dev, "err updating isr %d\n", ret); + return ret; + } + fallthrough; + case FSL_XCVR_MODE_SPDIF: + ret = regmap_write(xcvr->regmap, + FSL_XCVR_TX_DPTH_CTRL_SET, + FSL_XCVR_TX_DPTH_CTRL_STRT_DATA_TX); + if (ret < 0) { + dev_err(dai->dev, "Failed to start DATA_TX: %d\n", ret); + return ret; + } + break; + } + } + + /* enable DMA RD/WR */ + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, + FSL_XCVR_EXT_CTRL_DMA_DIS(tx), 0); + if (ret < 0) { + dev_err(dai->dev, "Failed to enable DMA: %d\n", ret); + return ret; + } + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + /* disable DMA RD/WR */ + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, + FSL_XCVR_EXT_CTRL_DMA_DIS(tx), + FSL_XCVR_EXT_CTRL_DMA_DIS(tx)); + if (ret < 0) { + dev_err(dai->dev, "Failed to disable DMA: %d\n", ret); + return ret; + } + + if (tx) { + switch (xcvr->mode) { + case FSL_XCVR_MODE_SPDIF: + ret = regmap_write(xcvr->regmap, + FSL_XCVR_TX_DPTH_CTRL_CLR, + FSL_XCVR_TX_DPTH_CTRL_STRT_DATA_TX); + if (ret < 0) { + dev_err(dai->dev, "Failed to stop DATA_TX: %d\n", ret); + return ret; + } + fallthrough; + case FSL_XCVR_MODE_EARC: + /* clear ISR_CMDC_TX_EN, W1C */ + ret = regmap_write(xcvr->regmap, + FSL_XCVR_ISR_CLR, + FSL_XCVR_ISR_CMDC_TX_EN); + if (ret < 0) { + dev_err(dai->dev, + "Err updating ISR %d\n", ret); + return ret; + } + break; + } + } + break; + default: + return -EINVAL; + } + + return 0; +} + +static int fsl_xcvr_load_firmware(struct fsl_xcvr *xcvr) +{ + struct device *dev = &xcvr->pdev->dev; + const struct firmware *fw; + int ret = 0, rem, off, out, page = 0, size = FSL_XCVR_REG_OFFSET; + u32 mask, val; + + ret = request_firmware(&fw, xcvr->fw_name, dev); + if (ret) { + dev_err(dev, "failed to request firmware.\n"); + return ret; + } + + rem = fw->size; + + /* RAM is 20KiB => max 10 pages 2KiB each */ + for (page = 0; page < 10; page++) { + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, + FSL_XCVR_EXT_CTRL_PAGE_MASK, + FSL_XCVR_EXT_CTRL_PAGE(page)); + if (ret < 0) { + dev_err(dev, "FW: failed to set page %d, err=%d\n", + page, ret); + goto err_firmware; + } + + off = page * size; + out = min(rem, size); + /* IPG clock is assumed to be running, otherwise it will hang */ + if (out > 0) { + /* write firmware into code memory */ + memcpy_toio(xcvr->ram_addr, fw->data + off, out); + rem -= out; + if (rem == 0) { + /* last part of firmware written */ + /* clean remaining part of code memory page */ + memset_io(xcvr->ram_addr + out, 0, size - out); + } + } else { + /* clean current page, including data memory */ + memset_io(xcvr->ram_addr, 0, size); + } + }; + +err_firmware: + release_firmware(fw); + if (ret < 0) + return ret; + + /* configure watermarks */ + mask = FSL_XCVR_EXT_CTRL_RX_FWM_MASK | FSL_XCVR_EXT_CTRL_TX_FWM_MASK; + val = FSL_XCVR_EXT_CTRL_RX_FWM(FSL_XCVR_FIFO_WMK_RX); + val |= FSL_XCVR_EXT_CTRL_TX_FWM(FSL_XCVR_FIFO_WMK_TX); + /* disable DMA RD/WR */ + mask |= FSL_XCVR_EXT_CTRL_DMA_RD_DIS | FSL_XCVR_EXT_CTRL_DMA_WR_DIS; + val |= FSL_XCVR_EXT_CTRL_DMA_RD_DIS | FSL_XCVR_EXT_CTRL_DMA_WR_DIS; + /* Data RAM is 4KiB, last two pages: 8 and 9. Select page 8. */ + mask |= FSL_XCVR_EXT_CTRL_PAGE_MASK; + val |= FSL_XCVR_EXT_CTRL_PAGE(8); + + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, mask, val); + if (ret < 0) { + dev_err(dev, "Failed to set watermarks: %d\n", ret); + return ret; + } + + /* Store Capabilities Data Structure into Data RAM */ + memcpy_toio(xcvr->ram_addr + FSL_XCVR_CAP_DATA_STR, xcvr->cap_ds, + FSL_XCVR_CAPDS_SIZE); + + return 0; +} + +static int fsl_xcvr_type_iec958_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; + uinfo->count = 1; + + return 0; +} + +static int fsl_xcvr_type_iec958_bytes_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; + uinfo->count = sizeof_field(struct snd_aes_iec958, status); + + return 0; +} + +static int fsl_xcvr_rx_cs_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + + memcpy(ucontrol->value.iec958.status, xcvr->rx_iec958.status, 24); + + return 0; +} + +static int fsl_xcvr_tx_cs_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + + memcpy(ucontrol->value.iec958.status, xcvr->tx_iec958.status, 24); + + return 0; +} + +static int fsl_xcvr_tx_cs_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + + memcpy(xcvr->tx_iec958.status, ucontrol->value.iec958.status, 24); + + return 0; +} + +static struct snd_kcontrol_new fsl_xcvr_rx_ctls[] = { + /* Channel status controller */ + { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT), + .access = SNDRV_CTL_ELEM_ACCESS_READ, + .info = fsl_xcvr_type_iec958_info, + .get = fsl_xcvr_rx_cs_get, + }, + /* Capture channel status, bytes */ + { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "Capture Channel Status", + .access = SNDRV_CTL_ELEM_ACCESS_READ, + .info = fsl_xcvr_type_iec958_bytes_info, + .get = fsl_xcvr_rx_cs_get, + }, +}; + +static struct snd_kcontrol_new fsl_xcvr_tx_ctls[] = { + /* Channel status controller */ + { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, + .info = fsl_xcvr_type_iec958_info, + .get = fsl_xcvr_tx_cs_get, + .put = fsl_xcvr_tx_cs_put, + }, + /* Playback channel status, bytes */ + { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "Playback Channel Status", + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, + .info = fsl_xcvr_type_iec958_bytes_info, + .get = fsl_xcvr_tx_cs_get, + .put = fsl_xcvr_tx_cs_put, + }, +}; + +static struct snd_soc_dai_ops fsl_xcvr_dai_ops = { + .prepare = fsl_xcvr_prepare, + .startup = fsl_xcvr_startup, + .shutdown = fsl_xcvr_shutdown, + .trigger = fsl_xcvr_trigger, +}; + +static int fsl_xcvr_dai_probe(struct snd_soc_dai *dai) +{ + struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); + + snd_soc_dai_init_dma_data(dai, &xcvr->dma_prms_tx, &xcvr->dma_prms_rx); + snd_soc_dai_set_drvdata(dai, xcvr); + + snd_soc_add_dai_controls(dai, &fsl_xcvr_mode_kctl, 1); + snd_soc_add_dai_controls(dai, &fsl_xcvr_arc_mode_kctl, 1); + snd_soc_add_dai_controls(dai, &fsl_xcvr_earc_capds_kctl, 1); + snd_soc_add_dai_controls(dai, fsl_xcvr_tx_ctls, + ARRAY_SIZE(fsl_xcvr_tx_ctls)); + snd_soc_add_dai_controls(dai, fsl_xcvr_rx_ctls, + ARRAY_SIZE(fsl_xcvr_rx_ctls)); + return 0; +} + +static struct snd_soc_dai_driver fsl_xcvr_dai = { + .probe = fsl_xcvr_dai_probe, + .ops = &fsl_xcvr_dai_ops, + .playback = { + .stream_name = "CPU-Playback", + .channels_min = 1, + .channels_max = 32, + .rate_min = 32000, + .rate_max = 1536000, + .rates = SNDRV_PCM_RATE_KNOT, + .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE, + }, + .capture = { + .stream_name = "CPU-Capture", + .channels_min = 1, + .channels_max = 32, + .rate_min = 32000, + .rate_max = 1536000, + .rates = SNDRV_PCM_RATE_KNOT, + .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE, + }, +}; + +static const struct snd_soc_component_driver fsl_xcvr_comp = { + .name = "fsl-xcvr-dai", +}; + +static const struct reg_default fsl_xcvr_reg_defaults[] = { + { FSL_XCVR_VERSION, 0x00000000 }, + { FSL_XCVR_EXT_CTRL, 0xF8204040 }, + { FSL_XCVR_EXT_STATUS, 0x00000000 }, + { FSL_XCVR_EXT_IER0, 0x00000000 }, + { FSL_XCVR_EXT_IER1, 0x00000000 }, + { FSL_XCVR_EXT_ISR, 0x00000000 }, + { FSL_XCVR_EXT_ISR_SET, 0x00000000 }, + { FSL_XCVR_EXT_ISR_CLR, 0x00000000 }, + { FSL_XCVR_EXT_ISR_TOG, 0x00000000 }, + { FSL_XCVR_IER, 0x00000000 }, + { FSL_XCVR_ISR, 0x00000000 }, + { FSL_XCVR_ISR_SET, 0x00000000 }, + { FSL_XCVR_ISR_CLR, 0x00000000 }, + { FSL_XCVR_ISR_TOG, 0x00000000 }, + { FSL_XCVR_RX_DPTH_CTRL, 0x00002C89 }, + { FSL_XCVR_RX_DPTH_CTRL_SET, 0x00002C89 }, + { FSL_XCVR_RX_DPTH_CTRL_CLR, 0x00002C89 }, + { FSL_XCVR_RX_DPTH_CTRL_TOG, 0x00002C89 }, + { FSL_XCVR_TX_DPTH_CTRL, 0x00000000 }, + { FSL_XCVR_TX_DPTH_CTRL_SET, 0x00000000 }, + { FSL_XCVR_TX_DPTH_CTRL_CLR, 0x00000000 }, + { FSL_XCVR_TX_DPTH_CTRL_TOG, 0x00000000 }, + { FSL_XCVR_TX_CS_DATA_0, 0x00000000 }, + { FSL_XCVR_TX_CS_DATA_1, 0x00000000 }, + { FSL_XCVR_TX_CS_DATA_2, 0x00000000 }, + { FSL_XCVR_TX_CS_DATA_3, 0x00000000 }, + { FSL_XCVR_TX_CS_DATA_4, 0x00000000 }, + { FSL_XCVR_TX_CS_DATA_5, 0x00000000 }, + { FSL_XCVR_DEBUG_REG_0, 0x00000000 }, + { FSL_XCVR_DEBUG_REG_1, 0x00000000 }, +}; + +static bool fsl_xcvr_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case FSL_XCVR_VERSION: + case FSL_XCVR_EXT_CTRL: + case FSL_XCVR_EXT_STATUS: + case FSL_XCVR_EXT_IER0: + case FSL_XCVR_EXT_IER1: + case FSL_XCVR_EXT_ISR: + case FSL_XCVR_EXT_ISR_SET: + case FSL_XCVR_EXT_ISR_CLR: + case FSL_XCVR_EXT_ISR_TOG: + case FSL_XCVR_IER: + case FSL_XCVR_ISR: + case FSL_XCVR_ISR_SET: + case FSL_XCVR_ISR_CLR: + case FSL_XCVR_ISR_TOG: + case FSL_XCVR_PHY_AI_CTRL: + case FSL_XCVR_PHY_AI_CTRL_SET: + case FSL_XCVR_PHY_AI_CTRL_CLR: + case FSL_XCVR_PHY_AI_CTRL_TOG: + case FSL_XCVR_PHY_AI_RDATA: + case FSL_XCVR_CLK_CTRL: + case FSL_XCVR_RX_DPTH_CTRL: + case FSL_XCVR_RX_DPTH_CTRL_SET: + case FSL_XCVR_RX_DPTH_CTRL_CLR: + case FSL_XCVR_RX_DPTH_CTRL_TOG: + case FSL_XCVR_TX_DPTH_CTRL: + case FSL_XCVR_TX_DPTH_CTRL_SET: + case FSL_XCVR_TX_DPTH_CTRL_CLR: + case FSL_XCVR_TX_DPTH_CTRL_TOG: + case FSL_XCVR_TX_CS_DATA_0: + case FSL_XCVR_TX_CS_DATA_1: + case FSL_XCVR_TX_CS_DATA_2: + case FSL_XCVR_TX_CS_DATA_3: + case FSL_XCVR_TX_CS_DATA_4: + case FSL_XCVR_TX_CS_DATA_5: + case FSL_XCVR_DEBUG_REG_0: + case FSL_XCVR_DEBUG_REG_1: + return true; + default: + return false; + } +} + +static bool fsl_xcvr_writeable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case FSL_XCVR_EXT_CTRL: + case FSL_XCVR_EXT_IER0: + case FSL_XCVR_EXT_IER1: + case FSL_XCVR_EXT_ISR: + case FSL_XCVR_EXT_ISR_SET: + case FSL_XCVR_EXT_ISR_CLR: + case FSL_XCVR_EXT_ISR_TOG: + case FSL_XCVR_IER: + case FSL_XCVR_ISR_SET: + case FSL_XCVR_ISR_CLR: + case FSL_XCVR_ISR_TOG: + case FSL_XCVR_PHY_AI_CTRL: + case FSL_XCVR_PHY_AI_CTRL_SET: + case FSL_XCVR_PHY_AI_CTRL_CLR: + case FSL_XCVR_PHY_AI_CTRL_TOG: + case FSL_XCVR_PHY_AI_WDATA: + case FSL_XCVR_CLK_CTRL: + case FSL_XCVR_RX_DPTH_CTRL: + case FSL_XCVR_RX_DPTH_CTRL_SET: + case FSL_XCVR_RX_DPTH_CTRL_CLR: + case FSL_XCVR_RX_DPTH_CTRL_TOG: + case FSL_XCVR_TX_DPTH_CTRL_SET: + case FSL_XCVR_TX_DPTH_CTRL_CLR: + case FSL_XCVR_TX_DPTH_CTRL_TOG: + case FSL_XCVR_TX_CS_DATA_0: + case FSL_XCVR_TX_CS_DATA_1: + case FSL_XCVR_TX_CS_DATA_2: + case FSL_XCVR_TX_CS_DATA_3: + case FSL_XCVR_TX_CS_DATA_4: + case FSL_XCVR_TX_CS_DATA_5: + return true; + default: + return false; + } +} + +static bool fsl_xcvr_volatile_reg(struct device *dev, unsigned int reg) +{ + return fsl_xcvr_readable_reg(dev, reg); +} + +static const struct regmap_config fsl_xcvr_regmap_cfg = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = FSL_XCVR_MAX_REG, + .reg_defaults = fsl_xcvr_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(fsl_xcvr_reg_defaults), + .readable_reg = fsl_xcvr_readable_reg, + .volatile_reg = fsl_xcvr_volatile_reg, + .writeable_reg = fsl_xcvr_writeable_reg, + .cache_type = REGCACHE_FLAT, +}; + +static irqreturn_t irq0_isr(int irq, void *devid) +{ + struct fsl_xcvr *xcvr = (struct fsl_xcvr *)devid; + struct device *dev = &xcvr->pdev->dev; + struct regmap *regmap = xcvr->regmap; + void __iomem *reg_ctrl, *reg_buff; + u32 isr, val, i; + + regmap_read(regmap, FSL_XCVR_EXT_ISR, &isr); + regmap_write(regmap, FSL_XCVR_EXT_ISR_CLR, isr); + + if (isr & FSL_XCVR_IRQ_NEW_CS) { + dev_dbg(dev, "Received new CS block\n"); + /* Data RAM is 4KiB, last two pages: 8 and 9. Select page 8. */ + regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, + FSL_XCVR_EXT_CTRL_PAGE_MASK, + FSL_XCVR_EXT_CTRL_PAGE(8)); + + /* Find updated CS buffer */ + reg_ctrl = xcvr->ram_addr + FSL_XCVR_RX_CS_CTRL_0; + reg_buff = xcvr->ram_addr + FSL_XCVR_RX_CS_BUFF_0; + memcpy_fromio(&val, reg_ctrl, sizeof(val)); + if (!val) { + reg_ctrl = xcvr->ram_addr + FSL_XCVR_RX_CS_CTRL_1; + reg_buff = xcvr->ram_addr + FSL_XCVR_RX_CS_BUFF_1; + memcpy_fromio(&val, reg_ctrl, sizeof(val)); + } + + if (val) { + /* copy CS buffer */ + memcpy_fromio(&xcvr->rx_iec958.status, reg_buff, + sizeof(xcvr->rx_iec958.status)); + for (i = 0; i < 6; i++) { + val = *(u32 *)(xcvr->rx_iec958.status + i*4); + *(u32 *)(xcvr->rx_iec958.status + i*4) = + bitrev32(val); + } + /* clear CS control register */ + memset_io(reg_ctrl, 0, sizeof(val)); + } + } + if (isr & FSL_XCVR_IRQ_NEW_UD) + dev_dbg(dev, "Received new UD block\n"); + if (isr & FSL_XCVR_IRQ_MUTE) + dev_dbg(dev, "HW mute bit detected\n"); + if (isr & FSL_XCVR_IRQ_FIFO_UOFL_ERR) + dev_dbg(dev, "RX/TX FIFO full/empty\n"); + if (isr & FSL_XCVR_IRQ_ARC_MODE) + dev_dbg(dev, "CMDC SM falls out of eARC mode\n"); + if (isr & FSL_XCVR_IRQ_DMA_RD_REQ) + dev_dbg(dev, "DMA read request\n"); + if (isr & FSL_XCVR_IRQ_DMA_WR_REQ) + dev_dbg(dev, "DMA write request\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t irq1_isr(int irq, void *devid) +{ + struct fsl_xcvr *xcvr = (struct fsl_xcvr *)devid; + struct device *dev = &xcvr->pdev->dev; + + dev_dbg(dev, "irq[1]: %d\n", irq); + + return IRQ_HANDLED; +} + +static irqreturn_t irq2_isr(int irq, void *devid) +{ + struct fsl_xcvr *xcvr = (struct fsl_xcvr *)devid; + struct device *dev = &xcvr->pdev->dev; + + dev_dbg(dev, "irq[2]: %d\n", irq); + + return IRQ_HANDLED; +} + +static const struct of_device_id fsl_xcvr_dt_ids[] = { + { .compatible = "fsl,imx8mp-xcvr", }, + { } +}; +MODULE_DEVICE_TABLE(of, fsl_xcvr_dt_ids); + +static int fsl_xcvr_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + const struct of_device_id *of_id; + struct fsl_xcvr *xcvr; + struct resource *ram_res, *regs_res, *rx_res, *tx_res; + void __iomem *regs; + int ret, irq; + + of_id = of_match_device(fsl_xcvr_dt_ids, dev); + if (!of_id) + return -EINVAL; + + xcvr = devm_kzalloc(dev, sizeof(*xcvr), GFP_KERNEL); + if (!xcvr) + return -ENOMEM; + + xcvr->pdev = pdev; + xcvr->ipg_clk = devm_clk_get(dev, "ipg"); + if (IS_ERR(xcvr->ipg_clk)) { + dev_err(dev, "failed to get ipg clock\n"); + return PTR_ERR(xcvr->ipg_clk); + } + + xcvr->phy_clk = devm_clk_get(dev, "phy"); + if (IS_ERR(xcvr->phy_clk)) { + dev_err(dev, "failed to get phy clock\n"); + return PTR_ERR(xcvr->phy_clk); + } + + xcvr->spba_clk = devm_clk_get(dev, "spba"); + if (IS_ERR(xcvr->spba_clk)) { + dev_err(dev, "failed to get spba clock\n"); + return PTR_ERR(xcvr->spba_clk); + } + + xcvr->pll_ipg_clk = devm_clk_get(dev, "pll_ipg"); + if (IS_ERR(xcvr->pll_ipg_clk)) { + dev_err(dev, "failed to get pll_ipg clock\n"); + return PTR_ERR(xcvr->pll_ipg_clk); + } + + ram_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ram"); + xcvr->ram_addr = devm_ioremap_resource(dev, ram_res); + if (IS_ERR(xcvr->ram_addr)) + return PTR_ERR(xcvr->ram_addr); + + regs_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs"); + regs = devm_ioremap_resource(dev, regs_res); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + xcvr->regmap = devm_regmap_init_mmio_clk(dev, NULL, regs, + &fsl_xcvr_regmap_cfg); + if (IS_ERR(xcvr->regmap)) { + dev_err(dev, "failed to init XCVR regmap: %ld\n", + PTR_ERR(xcvr->regmap)); + return PTR_ERR(xcvr->regmap); + } + + xcvr->reset = of_reset_control_get(np, NULL); + + ret = of_property_read_string(np, "firmware-name", &xcvr->fw_name); + if (ret) { + dev_err(dev, "failed to get fsl,xcvr-fw: %d\n", ret); + return ret; + } + + /* get IRQs */ + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(dev, "no irq[0]: %d\n", irq); + return irq; + } + + ret = devm_request_irq(dev, irq, irq0_isr, 0, pdev->name, xcvr); + if (ret) { + dev_err(dev, "failed to claim IRQ0: %i\n", ret); + return ret; + } + + irq = platform_get_irq(pdev, 1); + if (irq < 0) { + dev_err(dev, "no irq[1]: %d\n", irq); + return irq; + } + + ret = devm_request_irq(dev, irq, irq1_isr, 0, pdev->name, xcvr); + if (ret) { + dev_err(dev, "failed to claim IRQ1: %i\n", ret); + return ret; + } + + irq = platform_get_irq(pdev, 2); + if (irq < 0) { + dev_err(dev, "no irq[2]: %d\n", irq); + return irq; + } + + ret = devm_request_irq(dev, irq, irq2_isr, 0, pdev->name, xcvr); + if (ret) { + dev_err(dev, "failed to claim IRQ2: %i\n", ret); + return ret; + } + + rx_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rxfifo"); + tx_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "txfifo"); + xcvr->dma_prms_rx.chan_name = "rx"; + xcvr->dma_prms_tx.chan_name = "tx"; + xcvr->dma_prms_rx.addr = rx_res->start; + xcvr->dma_prms_tx.addr = tx_res->start; + xcvr->dma_prms_rx.maxburst = FSL_XCVR_MAXBURST_RX; + xcvr->dma_prms_tx.maxburst = FSL_XCVR_MAXBURST_TX; + + platform_set_drvdata(pdev, xcvr); + pm_runtime_enable(dev); + regcache_cache_only(xcvr->regmap, true); + + ret = devm_snd_soc_register_component(dev, &fsl_xcvr_comp, + &fsl_xcvr_dai, 1); + if (ret) { + dev_err(dev, "failed to register component %s\n", + fsl_xcvr_comp.name); + return ret; + } + + ret = devm_snd_dmaengine_pcm_register(dev, NULL, 0); + if (ret) + dev_err(dev, "failed to pcm register\n"); + + return ret; +} + +#ifdef CONFIG_PM +static int fsl_xcvr_runtime_suspend(struct device *dev) +{ + struct fsl_xcvr *xcvr = dev_get_drvdata(dev); + int ret; + + /* Assert M0+ reset */ + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, + FSL_XCVR_EXT_CTRL_CORE_RESET, + FSL_XCVR_EXT_CTRL_CORE_RESET); + if (ret < 0) + dev_err(dev, "Failed to assert M0+ core: %d\n", ret); + + regcache_cache_only(xcvr->regmap, true); + + clk_disable_unprepare(xcvr->spba_clk); + clk_disable_unprepare(xcvr->phy_clk); + clk_disable_unprepare(xcvr->pll_ipg_clk); + clk_disable_unprepare(xcvr->ipg_clk); + + return 0; +} + +static int fsl_xcvr_runtime_resume(struct device *dev) +{ + struct fsl_xcvr *xcvr = dev_get_drvdata(dev); + int ret; + + ret = clk_prepare_enable(xcvr->ipg_clk); + if (ret) { + dev_err(dev, "failed to start IPG clock.\n"); + return ret; + } + + ret = clk_prepare_enable(xcvr->pll_ipg_clk); + if (ret) { + dev_err(dev, "failed to start PLL IPG clock.\n"); + return ret; + } + + ret = clk_prepare_enable(xcvr->phy_clk); + if (ret) { + dev_err(dev, "failed to start PHY clock: %d\n", ret); + clk_disable_unprepare(xcvr->ipg_clk); + return ret; + } + + ret = clk_prepare_enable(xcvr->spba_clk); + if (ret) { + dev_err(dev, "failed to start SPBA clock.\n"); + clk_disable_unprepare(xcvr->phy_clk); + clk_disable_unprepare(xcvr->ipg_clk); + return ret; + } + + regcache_cache_only(xcvr->regmap, false); + regcache_mark_dirty(xcvr->regmap); + ret = regcache_sync(xcvr->regmap); + + if (ret) { + dev_err(dev, "failed to sync regcache.\n"); + return ret; + } + + reset_control_assert(xcvr->reset); + reset_control_deassert(xcvr->reset); + + ret = fsl_xcvr_load_firmware(xcvr); + if (ret) { + dev_err(dev, "failed to load firmware.\n"); + return ret; + } + + /* Release M0+ reset */ + ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, + FSL_XCVR_EXT_CTRL_CORE_RESET, 0); + if (ret < 0) { + dev_err(dev, "M0+ core release failed: %d\n", ret); + return ret; + } + mdelay(50); + + return 0; +} +#endif /* CONFIG_PM*/ + +static const struct dev_pm_ops fsl_xcvr_pm_ops = { + SET_RUNTIME_PM_OPS(fsl_xcvr_runtime_suspend, + fsl_xcvr_runtime_resume, + NULL) + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) +}; + +static struct platform_driver fsl_xcvr_driver = { + .probe = fsl_xcvr_probe, + .driver = { + .name = "fsl,imx8mp-audio-xcvr", + .pm = &fsl_xcvr_pm_ops, + .of_match_table = fsl_xcvr_dt_ids, + }, +}; +module_platform_driver(fsl_xcvr_driver); + +MODULE_AUTHOR("Viorel Suman viorel.suman@nxp.com"); +MODULE_DESCRIPTION("NXP Audio Transceiver (XCVR) driver"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/fsl/fsl_xcvr.h b/sound/soc/fsl/fsl_xcvr.h new file mode 100644 index 00000000..7f2853c --- /dev/null +++ b/sound/soc/fsl/fsl_xcvr.h @@ -0,0 +1,266 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * NXP XCVR ALSA SoC Digital Audio Interface (DAI) driver + * + * Copyright 2019 NXP + */ + +#ifndef __FSL_XCVR_H +#define __FSL_XCVR_H + +#define FSL_XCVR_MODE_SPDIF 0 +#define FSL_XCVR_MODE_ARC 1 +#define FSL_XCVR_MODE_EARC 2 + +/* XCVR Registers */ +#define FSL_XCVR_REG_OFFSET 0x800 /* regs offset */ +#define FSL_XCVR_FIFO_SIZE 0x80 /* 128 */ +#define FSL_XCVR_FIFO_WMK_RX (FSL_XCVR_FIFO_SIZE >> 1) /* 64 */ +#define FSL_XCVR_FIFO_WMK_TX (FSL_XCVR_FIFO_SIZE >> 1) /* 64 */ +#define FSL_XCVR_MAXBURST_RX (FSL_XCVR_FIFO_WMK_RX >> 2) /* 16 */ +#define FSL_XCVR_MAXBURST_TX (FSL_XCVR_FIFO_WMK_TX >> 2) /* 16 */ + +#define FSL_XCVR_RX_FIFO_ADDR 0x0C00 +#define FSL_XCVR_TX_FIFO_ADDR 0x0E00 + +#define FSL_XCVR_VERSION 0x00 /* Version */ +#define FSL_XCVR_EXT_CTRL 0x10 /* Control */ +#define FSL_XCVR_EXT_STATUS 0x20 /* Status */ +#define FSL_XCVR_EXT_IER0 0x30 /* Interrupt en 0 */ +#define FSL_XCVR_EXT_IER1 0x40 /* Interrupt en 1 */ +#define FSL_XCVR_EXT_ISR 0x50 /* Interrupt status */ +#define FSL_XCVR_EXT_ISR_SET 0x54 /* Interrupt status */ +#define FSL_XCVR_EXT_ISR_CLR 0x58 /* Interrupt status */ +#define FSL_XCVR_EXT_ISR_TOG 0x5C /* Interrupt status */ +#define FSL_XCVR_IER 0x70 /* Interrupt en for M0+ */ +#define FSL_XCVR_ISR 0x80 /* Interrupt status */ +#define FSL_XCVR_ISR_SET 0x84 /* Interrupt status set */ +#define FSL_XCVR_ISR_CLR 0x88 /* Interrupt status clear */ +#define FSL_XCVR_ISR_TOG 0x8C /* Interrupt status toggle */ +#define FSL_XCVR_PHY_AI_CTRL 0x90 +#define FSL_XCVR_PHY_AI_CTRL_SET 0x94 +#define FSL_XCVR_PHY_AI_CTRL_CLR 0x98 +#define FSL_XCVR_PHY_AI_CTRL_TOG 0x9C +#define FSL_XCVR_PHY_AI_WDATA 0xA0 +#define FSL_XCVR_PHY_AI_RDATA 0xA4 +#define FSL_XCVR_CLK_CTRL 0xB0 +#define FSL_XCVR_RX_DPTH_CTRL 0x180 /* RX datapath ctrl reg */ +#define FSL_XCVR_RX_DPTH_CTRL_SET 0x184 +#define FSL_XCVR_RX_DPTH_CTRL_CLR 0x188 +#define FSL_XCVR_RX_DPTH_CTRL_TOG 0x18c + +#define FSL_XCVR_TX_DPTH_CTRL 0x220 /* TX datapath ctrl reg */ +#define FSL_XCVR_TX_DPTH_CTRL_SET 0x224 +#define FSL_XCVR_TX_DPTH_CTRL_CLR 0x228 +#define FSL_XCVR_TX_DPTH_CTRL_TOG 0x22C +#define FSL_XCVR_TX_CS_DATA_0 0x230 /* TX channel status bits regs */ +#define FSL_XCVR_TX_CS_DATA_1 0x234 +#define FSL_XCVR_TX_CS_DATA_2 0x238 +#define FSL_XCVR_TX_CS_DATA_3 0x23C +#define FSL_XCVR_TX_CS_DATA_4 0x240 +#define FSL_XCVR_TX_CS_DATA_5 0x244 +#define FSL_XCVR_DEBUG_REG_0 0x2E0 +#define FSL_XCVR_DEBUG_REG_1 0x2F0 + +#define FSL_XCVR_MAX_REG FSL_XCVR_DEBUG_REG_1 + +#define FSL_XCVR_EXT_CTRL_CORE_RESET BIT(31) + +#define FSL_XCVR_EXT_CTRL_RX_CMDC_RESET BIT(30) +#define FSL_XCVR_EXT_CTRL_TX_CMDC_RESET BIT(29) +#define FSL_XCVR_EXT_CTRL_CMDC_RESET(t) (t ? BIT(29) : BIT(30)) + +#define FSL_XCVR_EXT_CTRL_RX_DPTH_RESET BIT(28) +#define FSL_XCVR_EXT_CTRL_TX_DPTH_RESET BIT(27) +#define FSL_XCVR_EXT_CTRL_DPTH_RESET(t) (t ? BIT(27) : BIT(28)) + +#define FSL_XCVR_EXT_CTRL_TX_RX_MODE BIT(26) +#define FSL_XCVR_EXT_CTRL_DMA_RD_DIS BIT(25) +#define FSL_XCVR_EXT_CTRL_DMA_WR_DIS BIT(24) +#define FSL_XCVR_EXT_CTRL_DMA_DIS(t) (t ? BIT(24) : BIT(25)) +#define FSL_XCVR_EXT_CTRL_SPDIF_MODE BIT(23) +#define FSL_XCVR_EXT_CTRL_SLEEP_MODE BIT(21) + +#define FSL_XCVR_EXT_CTRL_TX_FWM_SHFT 0 +#define FSL_XCVR_EXT_CTRL_TX_FWM_MASK GENMASK(6, 0) +#define FSL_XCVR_EXT_CTRL_TX_FWM(i) (((i) << FSL_XCVR_EXT_CTRL_TX_FWM_SHFT) \ + & FSL_XCVR_EXT_CTRL_TX_FWM_MASK) +#define FSL_XCVR_EXT_CTRL_RX_FWM_SHFT 8 +#define FSL_XCVR_EXT_CTRL_RX_FWM_MASK GENMASK(14, 8) +#define FSL_XCVR_EXT_CTRL_RX_FWM(i) (((i) << FSL_XCVR_EXT_CTRL_RX_FWM_SHFT) \ + & FSL_XCVR_EXT_CTRL_RX_FWM_MASK) +#define FSL_XCVR_EXT_CTRL_PAGE_SHFT 16 +#define FSL_XCVR_EXT_CTRL_PAGE_MASK GENMASK(19, 16) +#define FSL_XCVR_EXT_CTRL_PAGE(i) (((i) << FSL_XCVR_EXT_CTRL_PAGE_SHFT) \ + & FSL_XCVR_EXT_CTRL_PAGE_MASK) + +#define FSL_XCVR_EXT_STUS_NT_FIFO_ENTR GENMASK(7, 0) +#define FSL_XCVR_EXT_STUS_NR_FIFO_ENTR GENMASK(15, 8) +#define FSL_XCVR_EXT_STUS_CM0_SLEEPING BIT(16) +#define FSL_XCVR_EXT_STUS_CM0_DEEP_SLP BIT(17) +#define FSL_XCVR_EXT_STUS_CM0_SLP_HACK BIT(18) +#define FSL_XCVR_EXT_STUS_RX_CMDC_RSTO BIT(23) +#define FSL_XCVR_EXT_STUS_TX_CMDC_RSTO BIT(24) +#define FSL_XCVR_EXT_STUS_RX_CMDC_COTO BIT(25) +#define FSL_XCVR_EXT_STUS_TX_CMDC_COTO BIT(26) +#define FSL_XCVR_EXT_STUS_HB_STATUS BIT(27) +#define FSL_XCVR_EXT_STUS_NEW_UD4_REC BIT(28) +#define FSL_XCVR_EXT_STUS_NEW_UD5_REC BIT(29) +#define FSL_XCVR_EXT_STUS_NEW_UD6_REC BIT(30) +#define FSL_XCVR_EXT_STUS_HPD_INPUT BIT(31) + +#define FSL_XCVR_IRQ_NEW_CS BIT(0) +#define FSL_XCVR_IRQ_NEW_UD BIT(1) +#define FSL_XCVR_IRQ_MUTE BIT(2) +#define FSL_XCVR_IRQ_CMDC_RESP_TO BIT(3) +#define FSL_XCVR_IRQ_ECC_ERR BIT(4) +#define FSL_XCVR_IRQ_PREAMBLE_MISMATCH BIT(5) +#define FSL_XCVR_IRQ_FIFO_UOFL_ERR BIT(6) +#define FSL_XCVR_IRQ_HOST_WAKEUP BIT(7) +#define FSL_XCVR_IRQ_HOST_OHPD BIT(8) +#define FSL_XCVR_IRQ_DMAC_NO_DATA_REC BIT(9) +#define FSL_XCVR_IRQ_DMAC_FMT_CHG_DET BIT(10) +#define FSL_XCVR_IRQ_HB_STATE_CHG BIT(11) +#define FSL_XCVR_IRQ_CMDC_STATUS_UPD BIT(12) +#define FSL_XCVR_IRQ_TEMP_UPD BIT(13) +#define FSL_XCVR_IRQ_DMA_RD_REQ BIT(14) +#define FSL_XCVR_IRQ_DMA_WR_REQ BIT(15) +#define FSL_XCVR_IRQ_DMAC_BME_BIT_ERR BIT(16) +#define FSL_XCVR_IRQ_PREAMBLE_MATCH BIT(17) +#define FSL_XCVR_IRQ_M_W_PRE_MISMATCH BIT(18) +#define FSL_XCVR_IRQ_B_PRE_MISMATCH BIT(19) +#define FSL_XCVR_IRQ_UNEXP_PRE_REC BIT(20) +#define FSL_XCVR_IRQ_ARC_MODE BIT(21) +#define FSL_XCVR_IRQ_CH_UD_OFLOW BIT(22) +#define FSL_XCVR_IRQ_EARC_ALL (FSL_XCVR_IRQ_NEW_CS | \ + FSL_XCVR_IRQ_NEW_UD | \ + FSL_XCVR_IRQ_MUTE | \ + FSL_XCVR_IRQ_FIFO_UOFL_ERR | \ + FSL_XCVR_IRQ_HOST_WAKEUP | \ + FSL_XCVR_IRQ_ARC_MODE) + +#define FSL_XCVR_ISR_CMDC_TX_EN BIT(3) +#define FSL_XCVR_ISR_HPD_TGL BIT(15) +#define FSL_XCVR_ISR_DMAC_SPARE_INT BIT(19) +#define FSL_XCVR_ISR_SET_SPDIF_RX_INT BIT(20) +#define FSL_XCVR_ISR_SET_SPDIF_TX_INT BIT(21) +#define FSL_XCVR_ISR_SET_SPDIF_MODE(t) (t ? BIT(21) : BIT(20)) +#define FSL_XCVR_ISR_SET_ARC_CM_INT BIT(22) +#define FSL_XCVR_ISR_SET_ARC_SE_INT BIT(23) + +#define FSL_XCVR_PHY_AI_ADDR_MASK GENMASK(7, 0) +#define FSL_XCVR_PHY_AI_RESETN BIT(15) +#define FSL_XCVR_PHY_AI_TOG_PLL BIT(24) +#define FSL_XCVR_PHY_AI_TOG_DONE_PLL BIT(25) +#define FSL_XCVR_PHY_AI_TOG_PHY BIT(26) +#define FSL_XCVR_PHY_AI_TOG_DONE_PHY BIT(27) +#define FSL_XCVR_PHY_AI_RW_MASK BIT(31) + +#define FSL_XCVR_RX_DPTH_CTRL_PAPB_FIFO_STATUS BIT(0) +#define FSL_XCVR_RX_DPTH_CTRL_DIS_PRE_ERR_CHK BIT(1) +#define FSL_XCVR_RX_DPTH_CTRL_DIS_NOD_REC_CHK BIT(2) +#define FSL_XCVR_RX_DPTH_CTRL_ECC_VUC_BIT_CHK BIT(3) +#define FSL_XCVR_RX_DPTH_CTRL_EN_CMP_PAR_CALC BIT(4) +#define FSL_XCVR_RX_DPTH_CTRL_RST_PKT_CNT_FIFO BIT(5) +#define FSL_XCVR_RX_DPTH_CTRL_STORE_FMT BIT(6) +#define FSL_XCVR_RX_DPTH_CTRL_EN_PAR_CALC BIT(7) +#define FSL_XCVR_RX_DPTH_CTRL_UDR BIT(8) +#define FSL_XCVR_RX_DPTH_CTRL_CSR BIT(9) +#define FSL_XCVR_RX_DPTH_CTRL_UDA BIT(10) +#define FSL_XCVR_RX_DPTH_CTRL_CSA BIT(11) +#define FSL_XCVR_RX_DPTH_CTRL_CLR_RX_FIFO BIT(12) +#define FSL_XCVR_RX_DPTH_CTRL_DIS_B_PRE_ERR_CHK BIT(13) +#define FSL_XCVR_RX_DPTH_CTRL_PABS BIT(19) +#define FSL_XCVR_RX_DPTH_CTRL_DTS_CDS BIT(20) +#define FSL_XCVR_RX_DPTH_CTRL_BLKC BIT(21) +#define FSL_XCVR_RX_DPTH_CTRL_MUTE_CTRL BIT(22) +#define FSL_XCVR_RX_DPTH_CTRL_MUTE_MODE BIT(23) +#define FSL_XCVR_RX_DPTH_CTRL_FMT_CHG_CTRL BIT(24) +#define FSL_XCVR_RX_DPTH_CTRL_FMT_CHG_MODE BIT(25) +#define FSL_XCVR_RX_DPTH_CTRL_LAYB_CTRL BIT(26) +#define FSL_XCVR_RX_DPTH_CTRL_LAYB_MODE BIT(27) +#define FSL_XCVR_RX_DPTH_CTRL_PRC BIT(28) +#define FSL_XCVR_RX_DPTH_CTRL_COMP BIT(29) +#define FSL_XCVR_RX_DPTH_CTRL_FSM GENMASK(31, 30) + +#define FSL_XCVR_TX_DPTH_CTRL_CS_ACK BIT(0) +#define FSL_XCVR_TX_DPTH_CTRL_UD_ACK BIT(1) +#define FSL_XCVR_TX_DPTH_CTRL_CS_MOD BIT(2) +#define FSL_XCVR_TX_DPTH_CTRL_UD_MOD BIT(3) +#define FSL_XCVR_TX_DPTH_CTRL_VLD_MOD BIT(4) +#define FSL_XCVR_TX_DPTH_CTRL_FRM_VLD BIT(5) +#define FSL_XCVR_TX_DPTH_CTRL_EN_PARITY BIT(6) +#define FSL_XCVR_TX_DPTH_CTRL_EN_PREAMBLE BIT(7) +#define FSL_XCVR_TX_DPTH_CTRL_EN_ECC_INTER BIT(8) +#define FSL_XCVR_TX_DPTH_CTRL_BYPASS_FEM BIT(10) +#define FSL_XCVR_TX_DPTH_CTRL_FRM_FMT BIT(11) +#define FSL_XCVR_TX_DPTH_CTRL_STRT_DATA_TX BIT(14) +#define FSL_XCVR_TX_DPTH_CTRL_ADD_CYC_TX_OE_STR BIT(15) +#define FSL_XCVR_TX_DPTH_CTRL_ADD_CYC_TX_OE_END BIT(16) +#define FSL_XCVR_TX_DPTH_CTRL_CLK_RATIO BIT(29) +#define FSL_XCVR_TX_DPTH_CTRL_TM_NO_PRE_BME GENMASK(31, 30) + +#define FSL_XCVR_PHY_AI_CTRL_AI_RESETN BIT(15) + +#define FSL_XCVR_PLL_CTRL0 0x00 +#define FSL_XCVR_PLL_CTRL0_SET 0x04 +#define FSL_XCVR_PLL_CTRL0_CLR 0x08 +#define FSL_XCVR_PLL_NUM 0x20 +#define FSL_XCVR_PLL_DEN 0x30 +#define FSL_XCVR_PLL_PDIV 0x40 +#define FSL_XCVR_PLL_BANDGAP_SET 0x54 +#define FSL_XCVR_PHY_CTRL 0x00 +#define FSL_XCVR_PHY_CTRL_SET 0x04 +#define FSL_XCVR_PHY_CTRL_CLR 0x08 +#define FSL_XCVR_PHY_CTRL2 0x70 +#define FSL_XCVR_PHY_CTRL2_SET 0x74 +#define FSL_XCVR_PHY_CTRL2_CLR 0x78 + +#define FSL_XCVR_PLL_BANDGAP_EN_VBG BIT(0) +#define FSL_XCVR_PLL_CTRL0_HROFF BIT(13) +#define FSL_XCVR_PLL_CTRL0_PWP BIT(14) +#define FSL_XCVR_PLL_CTRL0_CM0_EN BIT(24) +#define FSL_XCVR_PLL_CTRL0_CM1_EN BIT(25) +#define FSL_XCVR_PLL_CTRL0_CM2_EN BIT(26) +#define FSL_XCVR_PLL_PDIVx(v, i) ((v & 0x7) << (4 * i)) + +#define FSL_XCVR_PHY_CTRL_PHY_EN BIT(0) +#define FSL_XCVR_PHY_CTRL_RX_CM_EN BIT(1) +#define FSL_XCVR_PHY_CTRL_TSDIFF_OE BIT(5) +#define FSL_XCVR_PHY_CTRL_SPDIF_EN BIT(8) +#define FSL_XCVR_PHY_CTRL_ARC_MODE_SE_EN BIT(9) +#define FSL_XCVR_PHY_CTRL_ARC_MODE_CM_EN BIT(10) +#define FSL_XCVR_PHY_CTRL_TX_CLK_MASK GENMASK(26, 25) +#define FSL_XCVR_PHY_CTRL_TX_CLK_HDMI_SS BIT(25) +#define FSL_XCVR_PHY_CTRL_TX_CLK_AUD_SS BIT(26) +#define FSL_XCVR_PHY_CTRL2_EARC_TXMS BIT(14) + +#define FSL_XCVR_CS_DATA_0_FS_MASK GENMASK(31, 24) +#define FSL_XCVR_CS_DATA_0_FS_32000 0x3000000 +#define FSL_XCVR_CS_DATA_0_FS_44100 0x0000000 +#define FSL_XCVR_CS_DATA_0_FS_48000 0x2000000 +#define FSL_XCVR_CS_DATA_0_FS_64000 0xB000000 +#define FSL_XCVR_CS_DATA_0_FS_88200 0x8000000 +#define FSL_XCVR_CS_DATA_0_FS_96000 0xA000000 +#define FSL_XCVR_CS_DATA_0_FS_176400 0xC000000 +#define FSL_XCVR_CS_DATA_0_FS_192000 0xE000000 + +#define FSL_XCVR_CS_DATA_0_CH_MASK 0x3A +#define FSL_XCVR_CS_DATA_0_CH_U2LPCM 0x00 +#define FSL_XCVR_CS_DATA_0_CH_UMLPCM 0x20 +#define FSL_XCVR_CS_DATA_0_CH_U1BAUD 0x30 + +#define FSL_XCVR_CS_DATA_1_CH_MASK 0xF000 +#define FSL_XCVR_CS_DATA_1_CH_2 0x0000 +#define FSL_XCVR_CS_DATA_1_CH_8 0x7000 +#define FSL_XCVR_CS_DATA_1_CH_16 0xB000 +#define FSL_XCVR_CS_DATA_1_CH_32 0x3000 + +/* Data memory structures */ +#define FSL_XCVR_RX_CS_CTRL_0 0x20 /* First RX CS control register */ +#define FSL_XCVR_RX_CS_CTRL_1 0x24 /* Second RX CS control register */ +#define FSL_XCVR_RX_CS_BUFF_0 0x80 /* First RX CS buffer */ +#define FSL_XCVR_RX_CS_BUFF_1 0xA0 /* Second RX CS buffer */ +#define FSL_XCVR_CAP_DATA_STR 0x300 /* Capabilities data structure */ + +#endif /* __FSL_XCVR_H */

From: Viorel Suman viorel.suman@nxp.com

XCVR (Audio Transceiver) is a new IP module found on i.MX8MP.

Signed-off-by: Viorel Suman viorel.suman@nxp.com --- .../devicetree/bindings/sound/fsl,xcvr.yaml | 104 +++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/fsl,xcvr.yaml

diff --git a/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml b/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml new file mode 100644 index 00000000..d4bb792 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml @@ -0,0 +1,104 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/fsl,xcvr.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP Audio Transceiver (XCVR) Controller + +maintainers: + - Viorel Suman viorel.suman@nxp.com + +properties: + $nodename: + pattern: "^xcvr@.*" + + compatible: + const: fsl,imx8mp-xcvr + + reg: + items: + - description: 20K RAM for code and data + - description: registers space + - description: RX FIFO address + - description: TX FIFO address + + reg-names: + items: + - const: ram + - const: regs + - const: rxfifo + - const: txfifo + + interrupts: + maxItems: 3 + + clocks: + items: + - description: Peripheral clock + - description: PHY clock + - description: SPBA clock + - description: PLL clock + + clock-names: + items: + - const: ipg + - const: phy + - const: spba + - const: pll_ipg + + dmas: + maxItems: 2 + + dma-names: + items: + - const: rx + - const: tx + + firmware-name: + $ref: /schemas/types.yaml#/definitions/string + const: imx/xcvr/xcvr-imx8mp.bin + description: | + Should contain the name of the default firmware image + file located on the firmware search path + + resets: + maxItems: 1 + +required: + - compatible + - reg + - reg-names + - interrupts + - clocks + - clock-names + - dmas + - dma-names + - firmware-name + - resets + +examples: + - | + #include <dt-bindings/clock/imx8mp-clock.h> + #include <dt-bindings/reset/imx8mp-reset.h> + + xcvr: xcvr@30cc0000 { + compatible = "fsl,imx8mp-xcvr"; + reg = <0x30cc0000 0x800>, + <0x30cc0800 0x400>, + <0x30cc0c00 0x080>, + <0x30cc0e00 0x080>; + reg-names = "ram", "regs", "rxfifo", "txfifo"; + interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>, /* XCVR IRQ 0 */ + <GIC_SPI 129 IRQ_TYPE_LEVEL_HIGH>, /* XCVR IRQ 1 */ + <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>; /* XCVR PHY - SPDIF wakeup IRQ */ + clocks = <&audiomix_clk IMX8MP_CLK_AUDIOMIX_EARC_IPG>, + <&audiomix_clk IMX8MP_CLK_AUDIOMIX_EARC_PHY>, + <&audiomix_clk IMX8MP_CLK_AUDIOMIX_SPBA2_ROOT>, + <&audiomix_clk IMX8MP_CLK_AUDIOMIX_AUDPLL_ROOT>; + clock-names = "ipg", "phy", "spba", "pll_ipg"; + dmas = <&sdma2 30 2 0>, <&sdma2 31 2 0>; + dma-names = "rx", "tx"; + firmware-name = "imx/xcvr/xcvr-imx8mp.bin"; + resets = <&audiomix_reset 0>; + };