From patchwork Tue Jul 25 06:12:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shengjiu Wang X-Patchwork-Id: 13325995 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8D4E7C0015E for ; Tue, 25 Jul 2023 06:48:10 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 8D69CEA9; Tue, 25 Jul 2023 08:47:18 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 8D69CEA9 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1690267688; bh=QHTNGKjLNUB0izudLvoM/BqdiGv7hLsFAQF3L/gnhmk=; 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Tue, 25 Jul 2023 08:46:18 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 462412015CA; Tue, 25 Jul 2023 08:46:18 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 5ADE21800318; Tue, 25 Jul 2023 14:46:16 +0800 (+08) From: Shengjiu Wang To: hverkuil@xs4all.nl, sakari.ailus@iki.fi, tfiga@chromium.org, m.szyprowski@samsung.com, mchehab@kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, shengjiu.wang@gmail.com, Xiubo.Lee@gmail.com, festevam@gmail.com, nicoleotsuka@gmail.com, lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org Subject: [RFC PATCH v2 1/7] ASoC: fsl_asrc: define functions for memory to memory usage Date: Tue, 25 Jul 2023 14:12:14 +0800 Message-Id: <1690265540-25999-2-git-send-email-shengjiu.wang@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1690265540-25999-1-git-send-email-shengjiu.wang@nxp.com> References: <1690265540-25999-1-git-send-email-shengjiu.wang@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Message-ID-Hash: 3MZ7SB4WUHD7VMQL6EZMIYFGGRQQFSC7 X-Message-ID-Hash: 3MZ7SB4WUHD7VMQL6EZMIYFGGRQQFSC7 X-MailFrom: shengjiu.wang@nxp.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: ASRC can be used on memory to memory case, define several functions for m2m usage. m2m_start_part_one: first part of the start steps m2m_start_part_two: second part of the start steps m2m_stop_part_one: first part of stop steps m2m_stop_part_two: second part of stop steps m2m_check_format: check format is supported or not m2m_calc_out_len: calculate output length according to input length m2m_get_maxburst: burst size for dma m2m_pair_suspend: suspend function of pair m2m_pair_resume: resume function of pair get_output_fifo_size: get remaining data size in FIFO Signed-off-by: Shengjiu Wang --- sound/soc/fsl/fsl_asrc.c | 138 ++++++++++++++++++++++++++++++++ sound/soc/fsl/fsl_asrc.h | 2 + sound/soc/fsl/fsl_asrc_common.h | 37 +++++++++ 3 files changed, 177 insertions(+) diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c index adb8a59de2bd..30190ccb74e7 100644 --- a/sound/soc/fsl/fsl_asrc.c +++ b/sound/soc/fsl/fsl_asrc.c @@ -1063,6 +1063,135 @@ static int fsl_asrc_get_fifo_addr(u8 dir, enum asrc_pair_index index) return REG_ASRDx(dir, index); } +/* Get sample numbers in FIFO */ +static unsigned int fsl_asrc_get_output_fifo_size(struct fsl_asrc_pair *pair) +{ + struct fsl_asrc *asrc = pair->asrc; + enum asrc_pair_index index = pair->index; + u32 val; + + regmap_read(asrc->regmap, REG_ASRFST(index), &val); + + val &= ASRFSTi_OUTPUT_FIFO_MASK; + + return val >> ASRFSTi_OUTPUT_FIFO_SHIFT; +} + +static int fsl_asrc_m2m_start_part_one(struct fsl_asrc_pair *pair) +{ + struct fsl_asrc_pair_priv *pair_priv = pair->private; + struct fsl_asrc *asrc = pair->asrc; + struct device *dev = &asrc->pdev->dev; + struct asrc_config config; + int ret; + + /* fill config */ + config.pair = pair->index; + config.channel_num = pair->channels; + config.input_sample_rate = pair->rate[IN]; + config.output_sample_rate = pair->rate[OUT]; + config.input_format = pair->sample_format[IN]; + config.output_format = pair->sample_format[OUT]; + config.inclk = INCLK_NONE; + config.outclk = OUTCLK_ASRCK1_CLK; + + pair_priv->config = &config; + ret = fsl_asrc_config_pair(pair, true); + if (ret) { + dev_err(dev, "failed to config pair: %d\n", ret); + return ret; + } + + fsl_asrc_start_pair(pair); + + return 0; +} + +static int fsl_asrc_m2m_start_part_two(struct fsl_asrc_pair *pair) +{ + /* + * Clear DMA request during the stall state of ASRC: + * During STALL state, the remaining in input fifo would never be + * smaller than the input threshold while the output fifo would not + * be bigger than output one. Thus the DMA request would be cleared. + */ + fsl_asrc_set_watermarks(pair, ASRC_FIFO_THRESHOLD_MIN, + ASRC_FIFO_THRESHOLD_MAX); + + /* Update the real input threshold to raise DMA request */ + fsl_asrc_set_watermarks(pair, ASRC_M2M_INPUTFIFO_WML, + ASRC_M2M_OUTPUTFIFO_WML); + + return 0; +} + +static int fsl_asrc_m2m_stop_part_one(struct fsl_asrc_pair *pair) +{ + fsl_asrc_stop_pair(pair); + + return 0; +} + +static int fsl_asrc_m2m_check_format(u8 dir, u32 rate, u32 channels, u32 format) +{ + u64 support_format = FSL_ASRC_FORMATS; + + if (channels < 1 || channels > 10) + return -EINVAL; + + if (rate < 5512 || rate > 192000) + return -EINVAL; + + if (dir == IN) + support_format |= SNDRV_PCM_FMTBIT_S8; + + if (!(1 << format & support_format)) + return -EINVAL; + + return 0; +} + +/* calculate capture data length according to output data length and sample rate */ +static int fsl_asrc_m2m_calc_out_len(struct fsl_asrc_pair *pair, int input_buffer_length) +{ + unsigned int in_width, out_width; + unsigned int channels = pair->channels; + unsigned int in_samples, out_samples; + unsigned int out_length; + + in_width = snd_pcm_format_physical_width(pair->sample_format[IN]) / 8; + out_width = snd_pcm_format_physical_width(pair->sample_format[OUT]) / 8; + + in_samples = input_buffer_length / in_width / channels; + out_samples = pair->rate[OUT] * in_samples / pair->rate[IN]; + out_length = (out_samples - ASRC_OUTPUT_LAST_SAMPLE) * out_width * channels; + + return out_length; +} + +static int fsl_asrc_m2m_get_maxburst(u8 dir, struct fsl_asrc_pair *pair) +{ + struct fsl_asrc *asrc = pair->asrc; + struct fsl_asrc_priv *asrc_priv = asrc->private; + int wml = (dir == IN) ? ASRC_M2M_INPUTFIFO_WML : ASRC_M2M_OUTPUTFIFO_WML; + + if (!asrc_priv->soc->use_edma) + return wml * pair->channels; + else + return 1; +} + +static int fsl_asrc_m2m_pair_resume(struct fsl_asrc_pair *pair) +{ + struct fsl_asrc *asrc = pair->asrc; + int i; + + for (i = 0; i < pair->channels * 4; i++) + regmap_write(asrc->regmap, REG_ASRDI(pair->index), 0); + + return 0; +} + static int fsl_asrc_runtime_resume(struct device *dev); static int fsl_asrc_runtime_suspend(struct device *dev); @@ -1147,6 +1276,15 @@ static int fsl_asrc_probe(struct platform_device *pdev) asrc->get_fifo_addr = fsl_asrc_get_fifo_addr; asrc->pair_priv_size = sizeof(struct fsl_asrc_pair_priv); + asrc->m2m_start_part_one = fsl_asrc_m2m_start_part_one; + asrc->m2m_start_part_two = fsl_asrc_m2m_start_part_two; + asrc->m2m_stop_part_one = fsl_asrc_m2m_stop_part_one; + asrc->get_output_fifo_size = fsl_asrc_get_output_fifo_size; + asrc->m2m_check_format = fsl_asrc_m2m_check_format; + asrc->m2m_calc_out_len = fsl_asrc_m2m_calc_out_len; + asrc->m2m_get_maxburst = fsl_asrc_m2m_get_maxburst; + asrc->m2m_pair_resume = fsl_asrc_m2m_pair_resume; + if (of_device_is_compatible(np, "fsl,imx35-asrc")) { asrc_priv->clk_map[IN] = input_clk_map_imx35; asrc_priv->clk_map[OUT] = output_clk_map_imx35; diff --git a/sound/soc/fsl/fsl_asrc.h b/sound/soc/fsl/fsl_asrc.h index 86d2422ad606..1c492eb237f5 100644 --- a/sound/soc/fsl/fsl_asrc.h +++ b/sound/soc/fsl/fsl_asrc.h @@ -12,6 +12,8 @@ #include "fsl_asrc_common.h" +#define ASRC_M2M_INPUTFIFO_WML 0x4 +#define ASRC_M2M_OUTPUTFIFO_WML 0x2 #define ASRC_DMA_BUFFER_NUM 2 #define ASRC_INPUTFIFO_THRESHOLD 32 #define ASRC_OUTPUTFIFO_THRESHOLD 32 diff --git a/sound/soc/fsl/fsl_asrc_common.h b/sound/soc/fsl/fsl_asrc_common.h index 7e1c13ca37f1..00a615735f35 100644 --- a/sound/soc/fsl/fsl_asrc_common.h +++ b/sound/soc/fsl/fsl_asrc_common.h @@ -34,6 +34,11 @@ enum asrc_pair_index { * @pos: hardware pointer position * @req_dma_chan: flag to release dev_to_dev chan * @private: pair private area + * @complete: dma task complete + * @sample_format: format of m2m + * @rate: rate of m2m + * @buf_len: buffer length of m2m + * @req_pair: flag for request pair */ struct fsl_asrc_pair { struct fsl_asrc *asrc; @@ -49,6 +54,13 @@ struct fsl_asrc_pair { bool req_dma_chan; void *private; + + /* used for m2m */ + struct completion complete[2]; + snd_pcm_format_t sample_format[2]; + unsigned int rate[2]; + unsigned int buf_len[2]; + bool req_pair; }; /** @@ -72,6 +84,17 @@ struct fsl_asrc_pair { * @request_pair: function pointer * @release_pair: function pointer * @get_fifo_addr: function pointer + * @m2m_start_part_one: function pointer + * @m2m_start_part_two: function pointer + * @m2m_stop_part_one: function pointer + * @m2m_stop_part_two: function pointer + * @m2m_check_format: function pointer + * @m2m_calc_out_len: function pointer + * @m2m_get_maxburst: function pointer + * @m2m_pair_suspend: function pointer + * @m2m_pair_resume: function pointer + * @m2m_set_ratio_mod: function pointer + * @get_output_fifo_size: function pointer * @pair_priv_size: size of pair private struct. * @private: private data structure */ @@ -97,6 +120,20 @@ struct fsl_asrc { int (*request_pair)(int channels, struct fsl_asrc_pair *pair); void (*release_pair)(struct fsl_asrc_pair *pair); int (*get_fifo_addr)(u8 dir, enum asrc_pair_index index); + + int (*m2m_start_part_one)(struct fsl_asrc_pair *pair); + int (*m2m_start_part_two)(struct fsl_asrc_pair *pair); + int (*m2m_stop_part_one)(struct fsl_asrc_pair *pair); + int (*m2m_stop_part_two)(struct fsl_asrc_pair *pair); + + int (*m2m_check_format)(u8 dir, u32 rate, u32 channels, u32 format); + int (*m2m_calc_out_len)(struct fsl_asrc_pair *pair, int input_buffer_length); + int (*m2m_get_maxburst)(u8 dir, struct fsl_asrc_pair *pair); + int (*m2m_pair_suspend)(struct fsl_asrc_pair *pair); + int (*m2m_pair_resume)(struct fsl_asrc_pair *pair); + int (*m2m_set_ratio_mod)(struct fsl_asrc_pair *pair, int val); + + unsigned int (*get_output_fifo_size)(struct fsl_asrc_pair *pair); size_t pair_priv_size; void *private;