From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934030AbeAXOLJ (ORCPT ); Wed, 24 Jan 2018 09:11:09 -0500 Received: from mail-lf0-f65.google.com ([209.85.215.65]:40463 "EHLO mail-lf0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934001AbeAXOLG (ORCPT ); Wed, 24 Jan 2018 09:11:06 -0500 X-Google-Smtp-Source: AH8x2266KSb6H+Zy3RZgUp/mIBVjQscR89UWGtRUN9E4u+4W00JxQmUcc8nVyo/Vf9jpxqQR72qn7w== From: codekipper@gmail.com To: maxime.ripard@free-electrons.com Cc: linux-arm-kernel@lists.infradead.org, linux-sunxi@googlegroups.com, lgirdwood@gmail.com, broonie@kernel.org, linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org, be17068@iperbole.bo.it, Marcus Cooper Subject: [PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality Date: Wed, 24 Jan 2018 15:10:59 +0100 Message-Id: <20180124141101.12867-2-codekipper@gmail.com> X-Mailer: git-send-email 2.16.0 In-Reply-To: <20180124141101.12867-1-codekipper@gmail.com> References: <20180124141101.12867-1-codekipper@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Marcus Cooper Some codecs require a different amount of a bit clocks per frame than what is calculated by the sample width. Use the tdm slot bindings to provide this mechanism. Signed-off-by: Marcus Cooper --- sound/soc/sunxi/sun4i-i2s.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index dca1143c1150..d7a9141514cf 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c @@ -96,6 +96,7 @@ #define SUN8I_I2S_CTRL_BCLK_OUT BIT(18) #define SUN8I_I2S_CTRL_LRCK_OUT BIT(17) +#define SUN8I_I2S_FMT0_LRCK_MAX_PERIOD (GENMASK(17, 8) >> 8) #define SUN8I_I2S_FMT0_LRCK_PERIOD_MASK GENMASK(17, 8) #define SUN8I_I2S_FMT0_LRCK_PERIOD(period) ((period - 1) << 8) @@ -193,6 +194,9 @@ struct sun4i_i2s { struct regmap_field *field_rxchansel; const struct sun4i_i2s_quirks *variant; + + unsigned int tdm_slots; + unsigned int slot_width; }; struct sun4i_i2s_clk_div { @@ -344,7 +348,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, if (i2s->variant->has_fmt_set_lrck_period) regmap_update_bits(i2s->regmap, SUN4I_I2S_FMT0_REG, SUN8I_I2S_FMT0_LRCK_PERIOD_MASK, - SUN8I_I2S_FMT0_LRCK_PERIOD(32)); + SUN8I_I2S_FMT0_LRCK_PERIOD(word_size)); return 0; } @@ -418,7 +422,8 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, sr + i2s->variant->fmt_offset); return sun4i_i2s_set_clk_rate(dai, params_rate(params), - params_width(params)); + i2s->tdm_slots ? + i2s->slot_width : params_width(params)); } static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) @@ -691,6 +696,19 @@ static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, return 0; } +static int sun4i_i2s_set_dai_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int width) +{ + struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); + + i2s->tdm_slots = slots; + + i2s->slot_width = width; + + return 0; +} + static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = { .hw_params = sun4i_i2s_hw_params, .set_fmt = sun4i_i2s_set_fmt, @@ -698,6 +716,7 @@ static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = { .shutdown = sun4i_i2s_shutdown, .startup = sun4i_i2s_startup, .trigger = sun4i_i2s_trigger, + .set_tdm_slot = sun4i_i2s_set_dai_tdm_slot, }; static int sun4i_i2s_dai_probe(struct snd_soc_dai *dai) -- 2.16.0