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Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIRFE-0025pP-EZ; Tue, 24 Aug 2021 07:53:16 +0000 Received: from lucky1.263xmail.com ([211.157.147.132]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIRF9-0025lT-Ty for linux-rockchip@lists.infradead.org; Tue, 24 Aug 2021 07:53:15 +0000 Received: from localhost (unknown [192.168.167.16]) by lucky1.263xmail.com (Postfix) with ESMTP id F2F4DFB848; Tue, 24 Aug 2021 15:53:07 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED4: 1 X-SKE-CHECKED: 1 X-ANTISPAM-LEVEL: 2 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P704T139881101649664S1629791566598648_; Tue, 24 Aug 2021 15:53:08 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: <4025dcb5e337a48d686d05ddcf7526be> X-RL-SENDER: sugar.zhang@rock-chips.com X-SENDER: zxg@rock-chips.com X-LOGIN-NAME: sugar.zhang@rock-chips.com X-FST-TO: broonie@kernel.org X-RCPT-COUNT: 6 X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-System-Flag: 0 From: Sugar Zhang To: broonie@kernel.org, heiko@sntech.de Cc: linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, alsa-devel@alsa-project.org, Sugar Zhang Subject: [PATCH v1 5/7] ASoC: rockchip: pdm: Add support for path map Date: Tue, 24 Aug 2021 15:52:35 +0800 Message-Id: <1629791557-13614-5-git-send-email-sugar.zhang@rock-chips.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1629791446-13528-1-git-send-email-sugar.zhang@rock-chips.com> References: <1629791446-13528-1-git-send-email-sugar.zhang@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210824_005312_509274_57A9A304 X-CRM114-Status: GOOD ( 19.38 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org This patch adds property 'rockchip,path-map' for path mapping. e.g. "rockchip,path-map = <3 2 1 0>" means the mapping as follows: path0 <-- sdi3 path1 <-- sdi2 path2 <-- sdi1 path3 <-- sdi0 Signed-off-by: Sugar Zhang --- sound/soc/rockchip/rockchip_pdm.c | 34 ++++++++++++++++++++++++++++++++++ sound/soc/rockchip/rockchip_pdm.h | 3 +++ 2 files changed, 37 insertions(+) diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c index f2bf023..64d9891 100644 --- a/sound/soc/rockchip/rockchip_pdm.c +++ b/sound/soc/rockchip/rockchip_pdm.c @@ -20,6 +20,7 @@ #define PDM_DMA_BURST_SIZE (8) /* size * width: 8*4 = 32 bytes */ #define PDM_SIGNOFF_CLK_RATE (100000000) +#define PDM_PATH_MAX (4) enum rk_pdm_version { RK_PDM_RK3229, @@ -539,8 +540,36 @@ static const struct of_device_id rockchip_pdm_match[] __maybe_unused = { }; MODULE_DEVICE_TABLE(of, rockchip_pdm_match); +static int rockchip_pdm_path_parse(struct rk_pdm_dev *pdm, struct device_node *node) +{ + unsigned int path[PDM_PATH_MAX]; + int cnt = 0, ret = 0, i = 0, val = 0, msk = 0; + + cnt = of_count_phandle_with_args(node, "rockchip,path-map", + NULL); + if (cnt != PDM_PATH_MAX) + return cnt; + + ret = of_property_read_u32_array(node, "rockchip,path-map", + path, cnt); + if (ret) + return ret; + + for (i = 0; i < cnt; i++) { + if (path[i] >= PDM_PATH_MAX) + return -EINVAL; + msk |= PDM_PATH_MASK(i); + val |= PDM_PATH(i, path[i]); + } + + regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, msk, val); + + return 0; +} + static int rockchip_pdm_probe(struct platform_device *pdev) { + struct device_node *node = pdev->dev.of_node; const struct of_device_id *match; struct rk_pdm_dev *pdm; struct resource *res; @@ -606,6 +635,11 @@ static int rockchip_pdm_probe(struct platform_device *pdev) } rockchip_pdm_rxctrl(pdm, 0); + + ret = rockchip_pdm_path_parse(pdm, node); + if (ret != 0 && ret != -ENOENT) + goto err_suspend; + ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); if (ret) { dev_err(&pdev->dev, "could not register pcm: %d\n", ret); diff --git a/sound/soc/rockchip/rockchip_pdm.h b/sound/soc/rockchip/rockchip_pdm.h index 13bfbc2..cab9772 100644 --- a/sound/soc/rockchip/rockchip_pdm.h +++ b/sound/soc/rockchip/rockchip_pdm.h @@ -53,6 +53,9 @@ #define PDM_FD_DENOMINATOR_MSK GENMASK(15, 0) /* PDM CLK CTRL */ +#define PDM_PATH_SHIFT(x) (8 + (x) * 2) +#define PDM_PATH_MASK(x) (0x3 << PDM_PATH_SHIFT(x)) +#define PDM_PATH(x, v) ((v) << PDM_PATH_SHIFT(x)) #define PDM_CLK_FD_RATIO_MSK BIT(6) #define PDM_CLK_FD_RATIO_40 (0X0 << 6) #define PDM_CLK_FD_RATIO_35 BIT(6)