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Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 Subject: Re: [PATCH v2 4/7] ASoC: mediatek: mt7986: add platform driver Content-Language: en-US To: Maso Huang , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , Jaroslav Kysela , Takashi Iwai , Trevor Wu , Jiaxin Yu , Ren Zhijie , Allen-KH Cheng , alsa-devel@alsa-project.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org References: <20230626023501.11120-1-maso.huang@mediatek.com> <20230626023501.11120-5-maso.huang@mediatek.com> From: AngeloGioacchino Del Regno In-Reply-To: <20230626023501.11120-5-maso.huang@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Message-ID-Hash: O5MSXJEETPX6FSTY6L3RFJFFRALLUB2R X-Message-ID-Hash: O5MSXJEETPX6FSTY6L3RFJFFRALLUB2R X-MailFrom: angelogioacchino.delregno@collabora.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Il 26/06/23 04:34, Maso Huang ha scritto: > Add mt7986 platform driver. > > Signed-off-by: Maso Huang > --- > sound/soc/mediatek/Kconfig | 10 + > sound/soc/mediatek/Makefile | 1 + > sound/soc/mediatek/mt7986/Makefile | 9 + > sound/soc/mediatek/mt7986/mt7986-afe-pcm.c | 598 +++++++++++++++++++++ > 4 files changed, 618 insertions(+) > create mode 100644 sound/soc/mediatek/mt7986/Makefile > create mode 100644 sound/soc/mediatek/mt7986/mt7986-afe-pcm.c > ..snip.. > diff --git a/sound/soc/mediatek/mt7986/mt7986-afe-pcm.c b/sound/soc/mediatek/mt7986/mt7986-afe-pcm.c > new file mode 100644 > index 000000000000..9eef21762e93 > --- /dev/null > +++ b/sound/soc/mediatek/mt7986/mt7986-afe-pcm.c > @@ -0,0 +1,598 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * MediaTek ALSA SoC AFE platform driver for MT7986 > + * > + * Copyright (c) 2021 MediaTek Inc. > + * Author: Vic Wu > + * Maso Huang > + */ > + > +#include > +#include > +#include > +#include > +#include > + > +#include "mt7986-afe-common.h" > +#include "mt7986-afe-clk.h" > +#include "mt7986-reg.h" > +#include "../common/mtk-afe-platform-driver.h" > +#include "../common/mtk-afe-fe-dai.h" > + > +enum { > + MTK_AFE_RATE_8K = 0, > + MTK_AFE_RATE_11K = 1, > + MTK_AFE_RATE_12K = 2, > + MTK_AFE_RATE_16K = 4, > + MTK_AFE_RATE_22K = 5, > + MTK_AFE_RATE_24K = 6, > + MTK_AFE_RATE_32K = 8, > + MTK_AFE_RATE_44K = 9, > + MTK_AFE_RATE_48K = 10, > + MTK_AFE_RATE_88K = 13, > + MTK_AFE_RATE_96K = 14, > + MTK_AFE_RATE_176K = 17, > + MTK_AFE_RATE_192K = 18, > +}; > + > +unsigned int mt7986_afe_rate_transform(struct device *dev, > + unsigned int rate) Fits in one line. > +{ > + switch (rate) { > + case 8000: > + return MTK_AFE_RATE_8K; > + case 11025: > + return MTK_AFE_RATE_11K; > + case 12000: > + return MTK_AFE_RATE_12K; > + case 16000: > + return MTK_AFE_RATE_16K; > + case 22050: > + return MTK_AFE_RATE_22K; > + case 24000: > + return MTK_AFE_RATE_24K; > + case 32000: > + return MTK_AFE_RATE_32K; > + case 44100: > + return MTK_AFE_RATE_44K; > + case 48000: > + return MTK_AFE_RATE_48K; > + case 88200: > + return MTK_AFE_RATE_88K; > + case 96000: > + return MTK_AFE_RATE_96K; > + case 176400: > + return MTK_AFE_RATE_176K; > + case 192000: > + return MTK_AFE_RATE_192K; > + default: > + dev_warn(dev, "%s(), rate %u invalid, use %d!!!\n", s/use/using/g > + __func__, rate, MTK_AFE_RATE_48K); > + return MTK_AFE_RATE_48K; > + } > +} > + ..snip.. > + > +static bool mt7986_is_volatile_reg(struct device *dev, unsigned int reg) > +{ > + /* these auto-gen reg has read-only bit, so put it as volatile */ > + /* volatile reg cannot be cached, so cannot be set when power off */ Fix the comment format please; for multi-line comments, you want: /* * Those auto-gen regs are read-only, so put it a volatile because * volatile registers cannot be cached, which means that they cannot * be set when power is off */ > + switch (reg) { > + case AFE_DL0_CUR_MSB: > + case AFE_DL0_CUR: > + case AFE_DL0_RCH_MON: > + case AFE_DL0_LCH_MON: > + case AFE_VUL0_CUR_MSB: > + case AFE_VUL0_CUR: > + case AFE_IRQ_MCU_STATUS: > + case AFE_MEMIF_RD_MON: > + case AFE_MEMIF_WR_MON: > + return true; > + default: > + return false; > + }; > +} > + ..snip.. > + > +static int mt7986_afe_pcm_dev_probe(struct platform_device *pdev) > +{ > + struct mtk_base_afe *afe; > + struct mt7986_afe_private *afe_priv; > + struct device *dev; > + int i, irq_id, ret; > + > + afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL); > + if (!afe) > + return -ENOMEM; > + platform_set_drvdata(pdev, afe); > + > + afe->platform_priv = devm_kzalloc(&pdev->dev, sizeof(*afe_priv), > + GFP_KERNEL); > + if (!afe->platform_priv) > + return -ENOMEM; > + > + afe_priv = afe->platform_priv; > + afe->dev = &pdev->dev; > + dev = afe->dev; > + > + afe->base_addr = devm_platform_ioremap_resource(pdev, 0); > + if (IS_ERR(afe->base_addr)) > + return PTR_ERR(afe->base_addr); > + > + /* initial audio related clock */ > + ret = mt7986_init_clock(afe); As said in the review for patch [2/7], function mt7986_init_clock() must be moved in this file instead. > + if (ret) > + return dev_err_probe(dev, ret, "Cannot initialize clocks\n"); > + > + ret = devm_pm_runtime_enable(dev); > + if (ret) > + return ret; > + > + /* enable clock for regcache get default value from hw */ > + afe_priv->pm_runtime_bypass_reg_ctl = true; > + pm_runtime_get_sync(&pdev->dev); > + > + afe->regmap = devm_regmap_init_mmio(&pdev->dev, afe->base_addr, > + &mt7986_afe_regmap_config); pm_runtime_put_sync(&pdev->dev); if (IS_ERR(afe->regmap)) return PTR_ERR(afe->regmap); afe_prov->pm_runtime_bypass_reg_ctl = false; that's better :-) > + if (IS_ERR(afe->regmap)) { > + ret = PTR_ERR(afe->regmap); > + goto err_pm_disable; > + } > + > + pm_runtime_put_sync(&pdev->dev); > + afe_priv->pm_runtime_bypass_reg_ctl = false; > + > + /* init memif */ > + afe->memif_size = MT7986_MEMIF_NUM; > + afe->memif = devm_kcalloc(dev, afe->memif_size, sizeof(*afe->memif), > + GFP_KERNEL); > + if (!afe->memif) > + goto err_pm_disable; > + > + for (i = 0; i < afe->memif_size; i++) { > + afe->memif[i].data = &memif_data[i]; > + afe->memif[i].irq_usage = -1; > + } > + > + mutex_init(&afe->irq_alloc_lock); > + > + /* irq initialize */ > + afe->irqs_size = MT7986_IRQ_NUM; > + afe->irqs = devm_kcalloc(dev, afe->irqs_size, sizeof(*afe->irqs), > + GFP_KERNEL); > + if (!afe->irqs) > + goto err_pm_disable; > + > + for (i = 0; i < afe->irqs_size; i++) > + afe->irqs[i].irq_data = &irq_data[i]; > + > + /* request irq */ > + irq_id = platform_get_irq(pdev, 0); > + if (irq_id < 0) { > + dev_err(dev, "%pOFn no irq found\n", dev->of_node); > + ret = irq_id; > + goto err_pm_disable; You can just return... and please use dev_err_probe(). > + } > + ret = devm_request_irq(dev, irq_id, mt7986_afe_irq_handler, > + IRQF_TRIGGER_NONE, "asys-isr", (void *)afe); > + if (ret) { > + dev_err(dev, "could not request_irq for asys-isr\n"); > + goto err_pm_disable; > + } > + > + /* init sub_dais */ > + INIT_LIST_HEAD(&afe->sub_dais); > + > + for (i = 0; i < ARRAY_SIZE(dai_register_cbs); i++) { > + ret = dai_register_cbs[i](afe); > + if (ret) { > + dev_err(afe->dev, "dai register i %d fail, ret %d\n", > + i, ret); > + goto err_pm_disable; > + } > + } > + > + /* init dai_driver and component_driver */ > + ret = mtk_afe_combine_sub_dai(afe); > + if (ret) { > + dev_err(afe->dev, "mtk_afe_combine_sub_dai fail, ret %d\n", > + ret); > + goto err_pm_disable; > + } > + > + afe->mtk_afe_hardware = &mt7986_afe_hardware; > + afe->memif_fs = mt7986_memif_fs; > + afe->irq_fs = mt7986_irq_fs; > + > + afe->runtime_resume = mt7986_afe_runtime_resume; > + afe->runtime_suspend = mt7986_afe_runtime_suspend; > + > + /* register component */ > + ret = devm_snd_soc_register_component(&pdev->dev, > + &mt7986_afe_component, > + NULL, 0); > + if (ret) { > + dev_warn(dev, "err_platform\n"); That shall not be a dev_warn, but a dev_err() instead, but then, being this a probe function and not needing that jump, it's dev_err_probe(). > + goto err_pm_disable; > + } > + > + ret = devm_snd_soc_register_component(afe->dev, > + &mt7986_afe_pcm_dai_component, > + afe->dai_drivers, > + afe->num_dai_drivers); > + if (ret) { > + dev_warn(dev, "err_dai_component\n"); Same here. > + goto err_pm_disable; > + } > + > + return ret; > + > +err_pm_disable: You don't need this label because you're now using devm_pm_runtime_enable() and, following my advice from some lines up, pm_runtime_put_sync() is called at the right time already. This means that you can simplify this function a lot with directly returning the error in error paths (including instances of dev_err_probe() ). > + pm_runtime_put_sync(&pdev->dev); > + pm_runtime_disable(&pdev->dev); > + return ret; > +} > + > +static void mt7986_afe_pcm_dev_remove(struct platform_device *pdev) > +{ > + pm_runtime_disable(&pdev->dev); > + if (!pm_runtime_status_suspended(&pdev->dev)) > + mt7986_afe_runtime_suspend(&pdev->dev); > +} > + > +static const struct of_device_id mt7986_afe_pcm_dt_match[] = { > + { .compatible = "mediatek,mt7986-afe", }, You don't need the comma here ^^ so this is just { .compatible = "mediatek,mt7986-afe" }, Everything else looks fine. Regards, Angelo