From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752870AbcG3O1f (ORCPT ); Sat, 30 Jul 2016 10:27:35 -0400 Received: from mail-lf0-f67.google.com ([209.85.215.67]:35911 "EHLO mail-lf0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751064AbcG3O1W (ORCPT ); Sat, 30 Jul 2016 10:27:22 -0400 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 2/2] ASoC: sunxi: compatibility for sun6i to SPDIF Date: Sat, 30 Jul 2016 16:27:16 +0200 Message-Id: <20160730142716.29377-3-codekipper@gmail.com> X-Mailer: git-send-email 2.9.2 In-Reply-To: <20160730142716.29377-1-codekipper@gmail.com> References: <20160730142716.29377-1-codekipper@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Marcus Cooper The A31 SoC uses the same SPDIF block as found in earlier SoCs, but its reset is controlled via a separate reset controller. The DMA also complains when the maxburst is set to 4 so it's been adjusted to 8 which suites both the older and newer SoCs. Signed-off-by: Marcus Cooper --- sound/soc/sunxi/sun4i-spdif.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/sound/soc/sunxi/sun4i-spdif.c b/sound/soc/sunxi/sun4i-spdif.c index 0b04fb0..88fbb3a 100644 --- a/sound/soc/sunxi/sun4i-spdif.c +++ b/sound/soc/sunxi/sun4i-spdif.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include @@ -162,6 +163,7 @@ struct sun4i_spdif_dev { struct platform_device *pdev; struct clk *spdif_clk; struct clk *apb_clk; + struct reset_control *rst; struct snd_soc_dai_driver cpu_dai_drv; struct regmap *regmap; struct snd_dmaengine_dai_dma_data dma_params_tx; @@ -411,6 +413,7 @@ static const struct snd_soc_dapm_route dit_routes[] = { static const struct of_device_id sun4i_spdif_of_match[] = { { .compatible = "allwinner,sun4i-a10-spdif", }, + { .compatible = "allwinner,sun6i-a31-spdif", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, sun4i_spdif_of_match); @@ -482,11 +485,23 @@ static int sun4i_spdif_probe(struct platform_device *pdev) } host->dma_params_tx.addr = res->start + SUN4I_SPDIF_TXFIFO; - host->dma_params_tx.maxburst = 4; + host->dma_params_tx.maxburst = 8; host->dma_params_tx.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; platform_set_drvdata(pdev, host); + if (of_device_is_compatible(pdev->dev.of_node, + "allwinner,sun6i-a31-spdif")) { + host->rst = devm_reset_control_get_optional(&pdev->dev, NULL); + if (IS_ERR(host->rst) && PTR_ERR(host->rst) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + dev_err(&pdev->dev, "Failed to get reset: %d\n", ret); + goto err_disable_apb_clk; + } + if (!IS_ERR(host->rst)) + reset_control_deassert(host->rst); + } + ret = devm_snd_soc_register_component(&pdev->dev, &sun4i_spdif_component, &sun4i_spdif_dai, 1); if (ret) -- 2.9.2