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Tue, 09 Apr 2024 06:42:21 -0700 (PDT) From: Alexandre Mergnat Date: Tue, 09 Apr 2024 15:42:04 +0200 Subject: [PATCH v3 06/18] SoC: mediatek: mt8365: support audio clock control Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240226-audio-i350-v3-6-16bb2c974c55@baylibre.com> References: <20240226-audio-i350-v3-0-16bb2c974c55@baylibre.com> In-Reply-To: <20240226-audio-i350-v3-0-16bb2c974c55@baylibre.com> To: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Lee Jones , Flora Fu , Jaroslav Kysela , Takashi Iwai , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , Catalin Marinas , Will Deacon , Rob Herring Cc: linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Alexandre Mergnat X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; 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a=openpgp; fpr=231B5ED7F3EAAA700E60FE8B2B46499D7E31D445 Add audio clock wrapper and audio tuner control. Signed-off-by: Alexandre Mergnat --- sound/soc/mediatek/mt8365/mt8365-afe-clk.c | 451 +++++++++++++++++++++++++++++ sound/soc/mediatek/mt8365/mt8365-afe-clk.h | 49 ++++ 2 files changed, 500 insertions(+) diff --git a/sound/soc/mediatek/mt8365/mt8365-afe-clk.c b/sound/soc/mediatek/mt8365/mt8365-afe-clk.c new file mode 100644 index 000000000000..c87f8dd91978 --- /dev/null +++ b/sound/soc/mediatek/mt8365/mt8365-afe-clk.c @@ -0,0 +1,451 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Mediatek 8365 AFE clock control + * + * Copyright (c) 2024 MediaTek Inc. + * Authors: Jia Zeng + * Alexandre Mergnat + */ + +#include "mt8365-afe-clk.h" +#include "mt8365-afe-common.h" +#include "mt8365-reg.h" +#include "../common/mtk-base-afe.h" +#include +#include + +static const char *aud_clks[MT8365_CLK_NUM] = { + [MT8365_CLK_TOP_AUD_SEL] = "top_audio_sel", + [MT8365_CLK_AUD_I2S0_M] = "audio_i2s0_m", + [MT8365_CLK_AUD_I2S1_M] = "audio_i2s1_m", + [MT8365_CLK_AUD_I2S2_M] = "audio_i2s2_m", + [MT8365_CLK_AUD_I2S3_M] = "audio_i2s3_m", + [MT8365_CLK_ENGEN1] = "engen1", + [MT8365_CLK_ENGEN2] = "engen2", + [MT8365_CLK_AUD1] = "aud1", + [MT8365_CLK_AUD2] = "aud2", + [MT8365_CLK_I2S0_M_SEL] = "i2s0_m_sel", + [MT8365_CLK_I2S1_M_SEL] = "i2s1_m_sel", + [MT8365_CLK_I2S2_M_SEL] = "i2s2_m_sel", + [MT8365_CLK_I2S3_M_SEL] = "i2s3_m_sel", + [MT8365_CLK_CLK26M] = "top_clk26m_clk", +}; + +int mt8365_afe_init_audio_clk(struct mtk_base_afe *afe) +{ + size_t i; + struct mt8365_afe_private *afe_priv = afe->platform_priv; + + for (i = 0; i < ARRAY_SIZE(aud_clks); i++) { + afe_priv->clocks[i] = devm_clk_get(afe->dev, aud_clks[i]); + if (IS_ERR(afe_priv->clocks[i])) { + dev_err(afe->dev, "%s devm_clk_get %s fail\n", + __func__, aud_clks[i]); + return PTR_ERR(afe_priv->clocks[i]); + } + } + return 0; + + afe_priv->topckgen = syscon_regmap_lookup_by_phandle(afe->dev->of_node, + "mediatek,topckgen"); + if (IS_ERR(afe_priv->topckgen)) { + dev_err(afe->dev, "%s() Cannot find topckgen controller: %ld\n", + __func__, PTR_ERR(afe_priv->topckgen)); + return PTR_ERR(afe_priv->topckgen); + } +} + +int mt8365_afe_enable_clk(struct mtk_base_afe *afe, struct clk *clk) +{ + int ret; + + if (clk) { + ret = clk_prepare_enable(clk); + if (ret) { + dev_err(afe->dev, "Failed to enable clk\n"); + return ret; + } + } + return 0; +} + +void mt8365_afe_disable_clk(struct mtk_base_afe *afe, struct clk *clk) +{ + if (clk) + clk_disable_unprepare(clk); +} + +int mt8365_afe_set_clk_rate(struct mtk_base_afe *afe, struct clk *clk, + unsigned int rate) +{ + int ret; + + if (clk) { + ret = clk_set_rate(clk, rate); + if (ret) { + dev_err(afe->dev, "Failed to set rate\n"); + return ret; + } + } + return 0; +} + +int mt8365_afe_set_clk_parent(struct mtk_base_afe *afe, struct clk *clk, + struct clk *parent) +{ + int ret; + + if (clk && parent) { + ret = clk_set_parent(clk, parent); + if (ret) { + dev_err(afe->dev, "Failed to set parent\n"); + return ret; + } + } + return 0; +} + +static unsigned int get_top_cg_reg(unsigned int cg_type) +{ + switch (cg_type) { + case MT8365_TOP_CG_AFE: + case MT8365_TOP_CG_I2S_IN: + case MT8365_TOP_CG_22M: + case MT8365_TOP_CG_24M: + case MT8365_TOP_CG_INTDIR_CK: + case MT8365_TOP_CG_APLL2_TUNER: + case MT8365_TOP_CG_APLL_TUNER: + case MT8365_TOP_CG_SPDIF: + case MT8365_TOP_CG_TDM_OUT: + case MT8365_TOP_CG_TDM_IN: + case MT8365_TOP_CG_ADC: + case MT8365_TOP_CG_DAC: + case MT8365_TOP_CG_DAC_PREDIS: + case MT8365_TOP_CG_TML: + return AUDIO_TOP_CON0; + case MT8365_TOP_CG_I2S1_BCLK: + case MT8365_TOP_CG_I2S2_BCLK: + case MT8365_TOP_CG_I2S3_BCLK: + case MT8365_TOP_CG_I2S4_BCLK: + case MT8365_TOP_CG_DMIC0_ADC: + case MT8365_TOP_CG_DMIC1_ADC: + case MT8365_TOP_CG_DMIC2_ADC: + case MT8365_TOP_CG_DMIC3_ADC: + case MT8365_TOP_CG_CONNSYS_I2S_ASRC: + case MT8365_TOP_CG_GENERAL1_ASRC: + case MT8365_TOP_CG_GENERAL2_ASRC: + case MT8365_TOP_CG_TDM_ASRC: + return AUDIO_TOP_CON1; + default: + return 0; + } +} + +static unsigned int get_top_cg_mask(unsigned int cg_type) +{ + switch (cg_type) { + case MT8365_TOP_CG_AFE: + return AUD_TCON0_PDN_AFE; + case MT8365_TOP_CG_I2S_IN: + return AUD_TCON0_PDN_I2S_IN; + case MT8365_TOP_CG_22M: + return AUD_TCON0_PDN_22M; + case MT8365_TOP_CG_24M: + return AUD_TCON0_PDN_24M; + case MT8365_TOP_CG_INTDIR_CK: + return AUD_TCON0_PDN_INTDIR; + case MT8365_TOP_CG_APLL2_TUNER: + return AUD_TCON0_PDN_APLL2_TUNER; + case MT8365_TOP_CG_APLL_TUNER: + return AUD_TCON0_PDN_APLL_TUNER; + case MT8365_TOP_CG_SPDIF: + return AUD_TCON0_PDN_SPDIF; + case MT8365_TOP_CG_TDM_OUT: + return AUD_TCON0_PDN_TDM_OUT; + case MT8365_TOP_CG_TDM_IN: + return AUD_TCON0_PDN_TDM_IN; + case MT8365_TOP_CG_ADC: + return AUD_TCON0_PDN_ADC; + case MT8365_TOP_CG_DAC: + return AUD_TCON0_PDN_DAC; + case MT8365_TOP_CG_DAC_PREDIS: + return AUD_TCON0_PDN_DAC_PREDIS; + case MT8365_TOP_CG_TML: + return AUD_TCON0_PDN_TML; + case MT8365_TOP_CG_I2S1_BCLK: + return AUD_TCON1_PDN_I2S1_BCLK; + case MT8365_TOP_CG_I2S2_BCLK: + return AUD_TCON1_PDN_I2S2_BCLK; + case MT8365_TOP_CG_I2S3_BCLK: + return AUD_TCON1_PDN_I2S3_BCLK; + case MT8365_TOP_CG_I2S4_BCLK: + return AUD_TCON1_PDN_I2S4_BCLK; + case MT8365_TOP_CG_DMIC0_ADC: + return AUD_TCON1_PDN_DMIC0_ADC; + case MT8365_TOP_CG_DMIC1_ADC: + return AUD_TCON1_PDN_DMIC1_ADC; + case MT8365_TOP_CG_DMIC2_ADC: + return AUD_TCON1_PDN_DMIC2_ADC; + case MT8365_TOP_CG_DMIC3_ADC: + return AUD_TCON1_PDN_DMIC3_ADC; + case MT8365_TOP_CG_CONNSYS_I2S_ASRC: + return AUD_TCON1_PDN_CONNSYS_I2S_ASRC; + case MT8365_TOP_CG_GENERAL1_ASRC: + return AUD_TCON1_PDN_GENERAL1_ASRC; + case MT8365_TOP_CG_GENERAL2_ASRC: + return AUD_TCON1_PDN_GENERAL2_ASRC; + case MT8365_TOP_CG_TDM_ASRC: + return AUD_TCON1_PDN_TDM_ASRC; + default: + return 0; + } +} + +static unsigned int get_top_cg_on_val(unsigned int cg_type) +{ + return 0; +} + +static unsigned int get_top_cg_off_val(unsigned int cg_type) +{ + return get_top_cg_mask(cg_type); +} + +int mt8365_afe_enable_top_cg(struct mtk_base_afe *afe, unsigned int cg_type) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + unsigned int reg = get_top_cg_reg(cg_type); + unsigned int mask = get_top_cg_mask(cg_type); + unsigned int val = get_top_cg_on_val(cg_type); + unsigned long flags; + + spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags); + + afe_priv->top_cg_ref_cnt[cg_type]++; + if (afe_priv->top_cg_ref_cnt[cg_type] == 1) + regmap_update_bits(afe->regmap, reg, mask, val); + + spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags); + + return 0; +} + +int mt8365_afe_disable_top_cg(struct mtk_base_afe *afe, unsigned int cg_type) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + unsigned int reg = get_top_cg_reg(cg_type); + unsigned int mask = get_top_cg_mask(cg_type); + unsigned int val = get_top_cg_off_val(cg_type); + unsigned long flags; + + spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags); + + afe_priv->top_cg_ref_cnt[cg_type]--; + if (afe_priv->top_cg_ref_cnt[cg_type] == 0) + regmap_update_bits(afe->regmap, reg, mask, val); + else if (afe_priv->top_cg_ref_cnt[cg_type] < 0) + afe_priv->top_cg_ref_cnt[cg_type] = 0; + + spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags); + + return 0; +} + +int mt8365_afe_enable_main_clk(struct mtk_base_afe *afe) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + + mt8365_afe_enable_clk(afe, afe_priv->clocks[MT8365_CLK_TOP_AUD_SEL]); + mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_AFE); + mt8365_afe_enable_afe_on(afe); + + return 0; +} + +int mt8365_afe_disable_main_clk(struct mtk_base_afe *afe) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + + mt8365_afe_disable_afe_on(afe); + mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_AFE); + mt8365_afe_disable_clk(afe, afe_priv->clocks[MT8365_CLK_TOP_AUD_SEL]); + + return 0; +} + +int mt8365_afe_emi_clk_on(struct mtk_base_afe *afe) +{ + return 0; +} + +int mt8365_afe_emi_clk_off(struct mtk_base_afe *afe) +{ + return 0; +} + +int mt8365_afe_enable_afe_on(struct mtk_base_afe *afe) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + unsigned long flags; + + spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags); + + afe_priv->afe_on_ref_cnt++; + if (afe_priv->afe_on_ref_cnt == 1) + regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0x1); + + spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags); + + return 0; +} + +int mt8365_afe_disable_afe_on(struct mtk_base_afe *afe) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + unsigned long flags; + + spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags); + + afe_priv->afe_on_ref_cnt--; + if (afe_priv->afe_on_ref_cnt == 0) + regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0x0); + else if (afe_priv->afe_on_ref_cnt < 0) + afe_priv->afe_on_ref_cnt = 0; + + spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags); + + return 0; +} + +int mt8365_afe_hd_engen_enable(struct mtk_base_afe *afe, bool apll1) +{ + if (apll1) + regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE, + AFE_22M_PLL_EN, AFE_22M_PLL_EN); + else + regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE, + AFE_24M_PLL_EN, AFE_24M_PLL_EN); + + return 0; +} + +int mt8365_afe_hd_engen_disable(struct mtk_base_afe *afe, bool apll1) +{ + if (apll1) + regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE, + AFE_22M_PLL_EN, ~AFE_22M_PLL_EN); + else + regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE, + AFE_24M_PLL_EN, ~AFE_24M_PLL_EN); + + return 0; +} + +int mt8365_afe_enable_apll_tuner_cfg(struct mtk_base_afe *afe, unsigned int apll) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + + mutex_lock(&afe_priv->afe_clk_mutex); + + afe_priv->apll_tuner_ref_cnt[apll]++; + if (afe_priv->apll_tuner_ref_cnt[apll] != 1) { + mutex_unlock(&afe_priv->afe_clk_mutex); + return 0; + } + + if (apll == MT8365_AFE_APLL1) { + regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG, + AFE_APLL_TUNER_CFG_MASK, 0x432); + regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG, + AFE_APLL_TUNER_CFG_EN_MASK, 0x1); + } else { + regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG1, + AFE_APLL_TUNER_CFG1_MASK, 0x434); + regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG1, + AFE_APLL_TUNER_CFG1_EN_MASK, 0x1); + } + + mutex_unlock(&afe_priv->afe_clk_mutex); + return 0; +} + +int mt8365_afe_disable_apll_tuner_cfg(struct mtk_base_afe *afe, unsigned int apll) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + + mutex_lock(&afe_priv->afe_clk_mutex); + + afe_priv->apll_tuner_ref_cnt[apll]--; + if (afe_priv->apll_tuner_ref_cnt[apll] == 0) { + if (apll == MT8365_AFE_APLL1) + regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG, + AFE_APLL_TUNER_CFG_EN_MASK, 0x0); + else + regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG1, + AFE_APLL_TUNER_CFG1_EN_MASK, 0x0); + + } else if (afe_priv->apll_tuner_ref_cnt[apll] < 0) { + afe_priv->apll_tuner_ref_cnt[apll] = 0; + } + + mutex_unlock(&afe_priv->afe_clk_mutex); + return 0; +} + +int mt8365_afe_enable_apll_associated_cfg(struct mtk_base_afe *afe, unsigned int apll) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + + if (apll == MT8365_AFE_APLL1) { + if (clk_prepare_enable(afe_priv->clocks[MT8365_CLK_ENGEN1])) { + dev_info(afe->dev, "%s Failed to enable ENGEN1 clk\n", + __func__); + return 0; + } + mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_22M); + mt8365_afe_hd_engen_enable(afe, true); +#ifdef ENABLE_AFE_APLL_TUNER + mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_APLL_TUNER); + mt8365_afe_enable_apll_tuner_cfg(afe, MT8365_AFE_APLL1); +#endif + } else { + if (clk_prepare_enable(afe_priv->clocks[MT8365_CLK_ENGEN2])) { + dev_info(afe->dev, "%s Failed to enable ENGEN2 clk\n", + __func__); + return 0; + } + mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_24M); + mt8365_afe_hd_engen_enable(afe, false); +#ifdef ENABLE_AFE_APLL_TUNER + mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_APLL2_TUNER); + mt8365_afe_enable_apll_tuner_cfg(afe, MT8365_AFE_APLL2); +#endif + } + + return 0; +} + +int mt8365_afe_disable_apll_associated_cfg(struct mtk_base_afe *afe, unsigned int apll) +{ + struct mt8365_afe_private *afe_priv = afe->platform_priv; + + if (apll == MT8365_AFE_APLL1) { +#ifdef ENABLE_AFE_APLL_TUNER + mt8365_afe_disable_apll_tuner_cfg(afe, MT8365_AFE_APLL1); + mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_APLL_TUNER); +#endif + mt8365_afe_hd_engen_disable(afe, true); + mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_22M); + clk_disable_unprepare(afe_priv->clocks[MT8365_CLK_ENGEN1]); + } else { +#ifdef ENABLE_AFE_APLL_TUNER + mt8365_afe_disable_apll_tuner_cfg(afe, MT8365_AFE_APLL2); + mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_APLL2_TUNER); +#endif + mt8365_afe_hd_engen_disable(afe, false); + mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_24M); + clk_disable_unprepare(afe_priv->clocks[MT8365_CLK_ENGEN2]); + } + + return 0; +} diff --git a/sound/soc/mediatek/mt8365/mt8365-afe-clk.h b/sound/soc/mediatek/mt8365/mt8365-afe-clk.h new file mode 100644 index 000000000000..14fca6ae2641 --- /dev/null +++ b/sound/soc/mediatek/mt8365/mt8365-afe-clk.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Mediatek 8365 AFE clock control definitions + * + * Copyright (c) 2024 MediaTek Inc. + * Authors: Jia Zeng + * Alexandre Mergnat + */ + +#ifndef _MT8365_AFE_UTILS_H_ +#define _MT8365_AFE_UTILS_H_ + +struct mtk_base_afe; +struct clk; + +int mt8365_afe_init_audio_clk(struct mtk_base_afe *afe); + +int mt8365_afe_enable_clk(struct mtk_base_afe *afe, struct clk *clk); + +void mt8365_afe_disable_clk(struct mtk_base_afe *afe, struct clk *clk); + +int mt8365_afe_set_clk_rate(struct mtk_base_afe *afe, struct clk *clk, unsigned int rate); + +int mt8365_afe_set_clk_parent(struct mtk_base_afe *afe, struct clk *clk, struct clk *parent); + +int mt8365_afe_enable_top_cg(struct mtk_base_afe *afe, unsigned int cg_type); + +int mt8365_afe_disable_top_cg(struct mtk_base_afe *afe, unsigned int cg_type); + +int mt8365_afe_enable_main_clk(struct mtk_base_afe *afe); + +int mt8365_afe_disable_main_clk(struct mtk_base_afe *afe); + +int mt8365_afe_emi_clk_on(struct mtk_base_afe *afe); + +int mt8365_afe_emi_clk_off(struct mtk_base_afe *afe); + +int mt8365_afe_enable_afe_on(struct mtk_base_afe *afe); + +int mt8365_afe_disable_afe_on(struct mtk_base_afe *afe); + +int mt8365_afe_enable_apll_tuner_cfg(struct mtk_base_afe *afe, unsigned int apll); + +int mt8365_afe_disable_apll_tuner_cfg(struct mtk_base_afe *afe, unsigned int apll); + +int mt8365_afe_enable_apll_associated_cfg(struct mtk_base_afe *afe, unsigned int apll); + +int mt8365_afe_disable_apll_associated_cfg(struct mtk_base_afe *afe, unsigned int apll); +#endif