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Fri, 14 Oct 2022 19:48:50 +0900 (KST) Received: from cheetah.sa.corp.samsungelectronics.net (unknown [107.109.115.53]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20221014104847epsmtip1a09b60df02bcbbdd501ba89313fa8bc1~d6dKT-h8_2736427364epsmtip1Z; Fri, 14 Oct 2022 10:48:47 +0000 (GMT) From: Padmanabhan Rajanbabu To: lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, s.nawrocki@samsung.com, perex@perex.cz, tiwai@suse.com, pankaj.dubey@samsung.com, alim.akhtar@samsung.com, rcsekar@samsung.com, aswani.reddy@samsung.com Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Padmanabhan Rajanbabu Subject: [PATCH 1/6] ASoC: samsung: i2s: TDM Support for CPU DAI driver Date: Fri, 14 Oct 2022 15:51:46 +0530 Message-Id: <20221014102151.108539-2-p.rajanbabu@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221014102151.108539-1-p.rajanbabu@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprNJsWRmVeSWpSXmKPExsWy7bCmlm6Xs2eywfOf0hYP5m1js7hy8RCT xaHNW9ktpj58wmYx/8g5Vou+Fw+ZLb5d6WCyuLxrDpvFjPP7mCyObgy2WLT1C7tF565+VotZ F3awWrTuPcJucfhNO6vFhu9rGR0EPDZ8bmLz2DnrLrvHplWdbB53ru1h89j3dhmbR9+WVYwe 67dcZfH4vEkugCMq2yYjNTEltUghNS85PyUzL91WyTs43jne1MzAUNfQ0sJcSSEvMTfVVsnF J0DXLTMH6AMlhbLEnFKgUEBicbGSvp1NUX5pSapCRn5xia1SakFKToFJgV5xYm5xaV66Xl5q iZWhgYGRKVBhQnbGgjdRBT+MK3aeeczewNit1cXIySEhYCLx+9Jjli5GLg4hgd2MEpcnd7NB OJ8YJZo6OpkhnM+MEvcunWCDabl1+CwjRGIXo8T+lXNYIZxWJonL7/qYQKrYBEwlVs1pBEuI CDQxSbS9mQi2hVlgI6PE6WMPgao4OIQF3CW+zCgBaWARUJW4/P0GG0iYV8BW4swqY4ht8hKr NxxgBrE5Bewknrc0gc2UEFjIIfH82zuok1wkvrx6zwphC0u8Or6FHcKWknjZ3wZl50tM+9gM VV8h0fZxAxOEbS9x4MocFpC9zAKaEut36UOEZSWmnloHVsIswCfR+/sJVDmvxI55MLaqxPrl mxghbGmJfdf3QtkeEltnTYUG3URGiR9dP9gnMMrNQlixgJFxFaNkakFxbnpqsWmBcV5qOTzW kvNzNzGCU6mW9w7GRw8+6B1iZOJgPMQowcGsJML7WskzWYg3JbGyKrUoP76oNCe1+BCjKTD8 JjJLiSbnA5N5Xkm8oYmlgYmZmZmJpbGZoZI47+IZWslCAumJJanZqakFqUUwfUwcnFINTDxZ UyRtRe8pmlvf1q/RmHXKJ+H2POlJx9Iykws+FT58z+oa9OYi96k68WeHOrhKNm/+X2HM3rIy 3slrS+HFN9yWt1+enuAUGysh/aZhGlerny/vklNPtv2qZTF43JfFlG2xl++io9fUzsRZTYum pzZuv8a5s7ty3VH3XSu6L/NMOMT/nm1R5sva1dtSN2acvpajEsIrUmMXcbHF5f7H6pe9DIH1 kZZePw4fW737h5g2x/wni9fs8Wvz6pDYJ+HeqjQtbsfLfM3vm8XiTqlY6qTPn//rYH3HnBbx GsfTcnkpOlZr3XcUWHEsXFCwM1Yu3ysqyfegVaRSSWTNtD0CNumWn1TYkzl0pqysTn6sxFKc kWioxVxUnAgAHYrL+y4EAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrALMWRmVeSWpSXmKPExsWy7bCSnO4kO89kg9unGC0ezNvGZnHl4iEm i0Obt7JbTH34hM1i/pFzrBZ9Lx4yW3y70sFkcXnXHDaLGef3MVkc3RhssWjrF3aLzl39rBaz LuxgtWjde4Td4vCbdlaLDd/XMjoIeGz43MTmsXPWXXaPTas62TzuXNvD5rHv7TI2j74tqxg9 1m+5yuLxeZNcAEcUl01Kak5mWWqRvl0CV8aCN1EFP4wrdp55zN7A2K3VxcjJISFgInHr8FnG LkYuDiGBHYwSZx5cZodISEtM79/DBmELS6z895wdoqiZSeLFv6WMIAk2AVOJVXMaWUESIgIT mCROvjvGApJgFtjKKDH1s1EXIweHsIC7xJcZJSBhFgFVicvfb7CBhHkFbCXOrDKGmC8vsXrD AWYQm1PATuJ5SxMriC0EVPL8/DvGCYx8CxgZVjFKphYU56bnFhsWGOWllusVJ+YWl+al6yXn 525iBAe6ltYOxj2rPugdYmTiYDzEKMHBrCTC+1rJM1mINyWxsiq1KD++qDQntfgQozQHi5I4 74Wuk/FCAumJJanZqakFqUUwWSYOTqkGJoMta28y5p7bVXTmRj3zjCIzn6J7s/mTL++8/TNu 0c/n8Sn8DtceNBrf0ppRaTWvaLrpzTc7u28U70ldY92978WZrXUZ50tOPDKV7DjbNj9+sYSx eL2Ki8y7mg5RnYUPrn3rkb6+/JjKm6bChMsmNd5+ul3Hjpx6tHVBSwHrvFaWZ7/my9V9yAj4 IRQf9G2yldDivFvJS5oTeVwmv+va2cEte5+R6UCwrkaJwxvTJT9lGbvv3lml8mwpZ3DGK9dF on9LVNV9056pRuz8zJKWeVjZIcZ0q1PdlABdAZlb1yx//VvXpbLj+JII49S+c7mfnsh+CFYw fLrouXm1wEd314r2W/ySF36U8k+XtmI5r8RSnJFoqMVcVJwIAHNuNmnjAgAA X-CMS-MailID: 20221014104850epcas5p1a707b9d407a0947c3519077cf7fca5ff X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20221014104850epcas5p1a707b9d407a0947c3519077cf7fca5ff References: <20221014102151.108539-1-p.rajanbabu@samsung.com> X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1746661186633295449?= X-GMAIL-MSGID: =?utf-8?q?1746661186633295449?= Add support to configure samsung I2S CPU DAI in TDM mode. Signed-off-by: Chandrasekar R Signed-off-by: Padmanabhan Rajanbabu --- sound/soc/samsung/i2s-regs.h | 15 +++++++ sound/soc/samsung/i2s.c | 84 +++++++++++++++++++++++++++++++++++- 2 files changed, 98 insertions(+), 1 deletion(-) diff --git a/sound/soc/samsung/i2s-regs.h b/sound/soc/samsung/i2s-regs.h index b4b5d6053503..cb2be4a3b70b 100644 --- a/sound/soc/samsung/i2s-regs.h +++ b/sound/soc/samsung/i2s-regs.h @@ -154,4 +154,19 @@ #define I2SSIZE_TRNMSK (0xffff) #define I2SSIZE_SHIFT (16) +#define TDM_LRCLK_WIDTH_SHIFT 12 +#define TDM_LRCLK_WIDTH_MASK 0xFF +#define TDM_RX_SLOTS_SHIFT 8 +#define TDM_RX_SLOTS_MASK 7 +#define TDM_TX_SLOTS_SHIFT 4 +#define TDM_TX_SLOTS_MASK 7 +#define TDM_MODE_MASK 1 +#define TDM_MODE_SHIFT 1 +#define TDM_MODE_DSPA 0 +#define TDM_MODE_DSPB 1 +#define TDM_ENABLE (1 << 0) + +/* stereo default */ +#define TDM_DEFAULT_SLOT_NUM_DIVIDER 2 + #endif /* __SND_SOC_SAMSUNG_I2S_REGS_H */ diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index 9505200f3d11..fb806b0af6ab 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -117,6 +117,8 @@ struct samsung_i2s_priv { struct clk *clk_table[3]; struct clk_onecell_data clk_data; + int tdm_slots; + /* Spinlock protecting member fields below */ spinlock_t lock; @@ -625,15 +627,19 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai); struct i2s_dai *i2s = to_info(dai); int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave; + int tdm_mod_mask, tdm_mod_shift; + u32 tdm = 0, tdm_tmp = 0; u32 mod, tmp = 0; unsigned long flags; lrp_shift = priv->variant_regs->lrp_off; sdf_shift = priv->variant_regs->sdf_off; + tdm_mod_shift = TDM_MODE_SHIFT; mod_slave = 1 << priv->variant_regs->mss_off; sdf_mask = MOD_SDF_MASK << sdf_shift; lrp_rlow = MOD_LR_RLOW << lrp_shift; + tdm_mod_mask = TDM_MODE_MASK << tdm_mod_shift; /* Format is priority */ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { @@ -648,6 +654,20 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) case SND_SOC_DAIFMT_I2S: tmp |= (MOD_SDF_IIS << sdf_shift); break; + case SND_SOC_DAIFMT_DSP_A: + if (!(priv->quirks & QUIRK_SUPPORTS_TDM)) { + dev_err(&i2s->pdev->dev, "TDM mode not supported\n"); + return -EINVAL; + } + tdm_tmp |= (TDM_MODE_DSPA << tdm_mod_shift); + break; + case SND_SOC_DAIFMT_DSP_B: + if (!(priv->quirks & QUIRK_SUPPORTS_TDM)) { + dev_err(&i2s->pdev->dev, "TDM mode not supported\n"); + return -EINVAL; + } + tdm_tmp |= (TDM_MODE_DSPB << tdm_mod_shift); + break; default: dev_err(&i2s->pdev->dev, "Format not supported\n"); return -EINVAL; @@ -693,12 +713,17 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) pm_runtime_get_sync(dai->dev); spin_lock_irqsave(&priv->lock, flags); mod = readl(priv->addr + I2SMOD); + + if (priv->quirks & QUIRK_SUPPORTS_TDM) + tdm = readl(priv->addr + I2STDM); /* * Don't change the I2S mode if any controller is active on this * channel. */ if (any_active(i2s) && - ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) { + (((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp) || + ((priv->quirks & QUIRK_SUPPORTS_TDM) && + ((tdm & tdm_mod_mask) != tdm_tmp)))) { spin_unlock_irqrestore(&priv->lock, flags); pm_runtime_put(dai->dev); dev_err(&i2s->pdev->dev, @@ -706,6 +731,12 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) return -EAGAIN; } + if (priv->quirks & QUIRK_SUPPORTS_TDM) { + tdm &= ~(tdm_mod_mask); + tdm |= tdm_tmp; + writel(tdm, priv->addr + I2STDM); + } + mod &= ~(sdf_mask | lrp_rlow | mod_slave); mod |= tmp; writel(mod, priv->addr + I2SMOD); @@ -812,6 +843,47 @@ static int i2s_hw_params(struct snd_pcm_substream *substream, return 0; } +static int i2s_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, + unsigned int rx_mask, int slots, int slot_width) +{ + struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai); + struct i2s_dai *i2s = to_info(dai); + u32 tdm = 0, mask = 0, val = 0; + unsigned long flags; + + if (!(priv->quirks & QUIRK_SUPPORTS_TDM)) { + dev_err(&i2s->pdev->dev, "Invalid request: TDM not enabled\n"); + return -EINVAL; + } + + mask |= (TDM_ENABLE); + mask |= (TDM_TX_SLOTS_MASK << TDM_TX_SLOTS_SHIFT); + mask |= (TDM_RX_SLOTS_MASK << TDM_RX_SLOTS_SHIFT); + + if (slots) { + val |= ((slots-1) & TDM_TX_SLOTS_MASK) << TDM_TX_SLOTS_SHIFT; + val |= ((slots-1) & TDM_RX_SLOTS_MASK) << TDM_RX_SLOTS_SHIFT; + + dev_info(&i2s->pdev->dev, + "TDM Mode Configured - TX and RX Slots: %d\n", slots); + + val |= TDM_ENABLE; + + priv->tdm_slots = slots; + } else { + val = 0; + priv->tdm_slots = 0; + } + + spin_lock_irqsave(&priv->lock, flags); + tdm = readl(priv->addr + I2STDM); + tdm = (tdm & ~mask) | val; + writel(tdm, priv->addr + I2STDM); + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + /* We set constraints on the substream according to the version of I2S */ static int i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) @@ -879,6 +951,9 @@ static int config_setup(struct i2s_dai *i2s) if (!bfs && other) bfs = other->bfs; + if (!bfs && (priv->quirks & QUIRK_SUPPORTS_TDM) && priv->tdm_slots) + bfs = blc * priv->tdm_slots; + /* Select least possible multiple(2) if no constraint set */ if (!bfs) bfs = blc * 2; @@ -899,6 +974,9 @@ static int config_setup(struct i2s_dai *i2s) rfs = 256; else rfs = 384; + + if ((priv->quirks & QUIRK_SUPPORTS_TDM) && priv->tdm_slots) + rfs /= (priv->tdm_slots / TDM_DEFAULT_SLOT_NUM_DIVIDER); } /* If already setup and running */ @@ -1110,6 +1188,7 @@ static const struct snd_soc_dai_ops samsung_i2s_dai_ops = { .set_fmt = i2s_set_fmt, .set_clkdiv = i2s_set_clkdiv, .set_sysclk = i2s_set_sysclk, + .set_tdm_slot = i2s_set_tdm_slot, .startup = i2s_startup, .shutdown = i2s_shutdown, .delay = i2s_delay, @@ -1464,6 +1543,9 @@ static int samsung_i2s_probe(struct platform_device *pdev) dev_err(&pdev->dev, "failed to enable clock: %d\n", ret); return ret; } + + priv->tdm_slots = 0; + pri_dai->dma_playback.addr = regs_base + I2STXD; pri_dai->dma_capture.addr = regs_base + I2SRXD; pri_dai->dma_playback.chan_name = "tx";