From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753476AbbEKKh4 (ORCPT ); Mon, 11 May 2015 06:37:56 -0400 Received: from mail-bl2on0123.outbound.protection.outlook.com ([65.55.169.123]:4544 "EHLO na01-bl2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751538AbbEKKht (ORCPT ); Mon, 11 May 2015 06:37:49 -0400 Authentication-Results: spf=fail (sender IP is 192.88.158.2) smtp.mailfrom=freescale.com; freescale.mail.onmicrosoft.com; dkim=none (message not signed) header.d=none; From: Zidan Wang To: CC: , , , , , , , , , Zidan Wang Subject: [PATCH 2/3] ASoC: fsl_sai: Add tdm slots operation for SAI master mode Date: Mon, 11 May 2015 18:24:42 +0800 Message-ID: <1431339894-4248-2-git-send-email-zidan.wang@freescale.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:192.88.158.2;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10019020)(6009001)(339900001)(189002)(199003)(575784001)(86362001)(19580395003)(19580405001)(189998001)(110136002)(50466002)(62966003)(87936001)(85426001)(77156002)(2950100001)(104016003)(77096005)(92566002)(33646002)(5001960100002)(107886002)(50226001)(46102003)(76176999)(50986999)(229853001)(2351001)(6806004)(105606002)(47776003)(36756003)(4001430100001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM2PR0301MB1263;H:az84smr01.freescale.net;FPR:;SPF:Fail;MLV:sfv;MX:1;A:1;LANG:en; MIME-Version: 1.0 Content-Type: text/plain X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:DM2PR0301MB1263; X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(601004)(5005006)(3002001);SRVR:DM2PR0301MB1263;BCL:0;PCL:0;RULEID:;SRVR:DM2PR0301MB1263; X-Forefront-PRVS: 05739BA1B5 X-OriginatorOrg: freescale.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 May 2015 10:23:19.2245 (UTC) X-MS-Exchange-CrossTenant-Id: 710a03f5-10f6-4d38-9ff4-a80b81da590d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=710a03f5-10f6-4d38-9ff4-a80b81da590d;Ip=[192.88.158.2];Helo=[az84smr01.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM2PR0301MB1263 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add tdm slot operation for SAI master mode. When using SAI as master mode, we should use set_tdm_slot() helper function to set tdm slots in machine driver, or it will using default value of slots and slot width. SAI will generate BCLK depends on sample rate, slots and slot width. And there may be unused BCLK cycles before each LRCLK transition. Signed-off-by: Zidan Wang --- sound/soc/fsl/fsl_sai.c | 28 ++++++++++++++++++++++------ sound/soc/fsl/fsl_sai.h | 3 +++ 2 files changed, 25 insertions(+), 6 deletions(-) diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index 1ccc10d1..88f5861 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -115,6 +115,17 @@ out: return IRQ_HANDLED; } +static int fsl_sai_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, + u32 rx_mask, int slots, int slot_width) +{ + struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai); + + sai->slots = slots; + sai->slot_width = slot_width; + + return 0; +} + static int fsl_sai_set_dai_sysclk_tr(struct snd_soc_dai *cpu_dai, int clk_id, unsigned int freq, int fsl_dir) { @@ -372,11 +383,13 @@ static int fsl_sai_hw_params(struct snd_pcm_substream *substream, unsigned int channels = params_channels(params); u32 word_width = snd_pcm_format_width(params_format(params)); u32 val_cr4 = 0, val_cr5 = 0; + u32 slot_width = word_width; int ret; if (!sai->is_slave_mode) { + slot_width = sai->slot_width; ret = fsl_sai_set_bclk(cpu_dai, tx, - 2 * word_width * params_rate(params)); + sai->slots * slot_width * params_rate(params)); if (ret) return ret; @@ -388,21 +401,20 @@ static int fsl_sai_hw_params(struct snd_pcm_substream *substream, sai->mclk_streams |= BIT(substream->stream); } - } if (!sai->is_dsp_mode) - val_cr4 |= FSL_SAI_CR4_SYWD(word_width); + val_cr4 |= FSL_SAI_CR4_SYWD(slot_width); - val_cr5 |= FSL_SAI_CR5_WNW(word_width); - val_cr5 |= FSL_SAI_CR5_W0W(word_width); + val_cr5 |= FSL_SAI_CR5_WNW(slot_width); + val_cr5 |= FSL_SAI_CR5_W0W(slot_width); if (sai->is_lsb_first) val_cr5 |= FSL_SAI_CR5_FBT(0); else val_cr5 |= FSL_SAI_CR5_FBT(word_width - 1); - val_cr4 |= FSL_SAI_CR4_FRSZ(channels); + val_cr4 |= FSL_SAI_CR4_FRSZ(sai->slots); regmap_update_bits(sai->regmap, FSL_SAI_xCR4(tx), FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK, @@ -536,6 +548,7 @@ static void fsl_sai_shutdown(struct snd_pcm_substream *substream, static const struct snd_soc_dai_ops fsl_sai_pcm_dai_ops = { .set_sysclk = fsl_sai_set_dai_sysclk, .set_fmt = fsl_sai_set_dai_fmt, + .set_tdm_slot = fsl_sai_set_dai_tdm_slot, .hw_params = fsl_sai_hw_params, .hw_free = fsl_sai_hw_free, .trigger = fsl_sai_trigger, @@ -721,6 +734,9 @@ static int fsl_sai_probe(struct platform_device *pdev) } } + sai->slots = 2; + sai->slot_width = 32; + irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(&pdev->dev, "no irq for node %s\n", pdev->name); diff --git a/sound/soc/fsl/fsl_sai.h b/sound/soc/fsl/fsl_sai.h index 0662809..1ec09d6 100644 --- a/sound/soc/fsl/fsl_sai.h +++ b/sound/soc/fsl/fsl_sai.h @@ -142,6 +142,9 @@ struct fsl_sai { unsigned int mclk_id[2]; unsigned int mclk_streams; + unsigned int slots; + unsigned int slot_width; + struct snd_dmaengine_dai_dma_data dma_params_rx; struct snd_dmaengine_dai_dma_data dma_params_tx; }; -- 1.9.1