From patchwork Tue Jan 5 15:28:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 357161 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16770C433DB for ; Tue, 5 Jan 2021 15:39:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DC35C22B45 for ; Tue, 5 Jan 2021 15:39:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728651AbhAEPjU (ORCPT ); Tue, 5 Jan 2021 10:39:20 -0500 Received: from perceval.ideasonboard.com ([213.167.242.64]:38190 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727895AbhAEPjT (ORCPT ); Tue, 5 Jan 2021 10:39:19 -0500 Received: from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 1C8CE1C03; Tue, 5 Jan 2021 16:30:19 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1609860619; bh=R4j7rRhMhe0TNlwU+kGwymvyxw4wMpwCkmdBKBq7ffE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kwvgr7Etv/sDp3E/KjlJWdF07Y/MzuygMQQRwt06dv/rRRTLLWeazDoUgW9jQN72e RZQfH/LSaUhfx42Zr9z+v+jegBTRd3yHgu/eFJQl1Tu8aAYMBF8Y02AikR68w3Bm2u xGmoBLcGTHuYfA8KsxtqFdgK53MeOICfcygAdGv0= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Rui Miguel Silva , Steve Longerbeam , Philipp Zabel , Ezequiel Garcia Subject: [PATCH 63/75] media: imx: imx7_mipi_csis: Avoid double get of wrap clock Date: Tue, 5 Jan 2021 17:28:40 +0200 Message-Id: <20210105152852.5733-64-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210105152852.5733-1-laurent.pinchart@ideasonboard.com> References: <20210105152852.5733-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The wrap clock is retrieved with the other clocks using devm_clk_bulk_get(), and retrieved independently with a specific devm_clk_get() call. The latter isn't needed, replace it with usage of the wrap clock from the bulk array. As the wrap clock is mandatory, simplify its usage further by removing conditionals. Signed-off-by: Laurent Pinchart --- drivers/staging/media/imx/imx7-mipi-csis.c | 31 +++++++++++----------- 1 file changed, 16 insertions(+), 15 deletions(-) diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c index 75facfc85dde..7994b3f54933 100644 --- a/drivers/staging/media/imx/imx7-mipi-csis.c +++ b/drivers/staging/media/imx/imx7-mipi-csis.c @@ -206,7 +206,17 @@ static const struct mipi_csis_event mipi_csis_events[] = { #define MIPI_CSIS_NUM_EVENTS ARRAY_SIZE(mipi_csis_events) -static const char * const mipi_csis_clk_id[] = {"pclk", "wrap", "phy"}; +enum mipi_csis_clk { + MIPI_CSIS_CLK_PCLK, + MIPI_CSIS_CLK_WRAP, + MIPI_CSIS_CLK_PHY, +}; + +static const char * const mipi_csis_clk_id[] = { + "pclk", + "wrap", + "phy", +}; struct csis_hw_reset { struct regmap *src; @@ -229,7 +239,6 @@ struct csi_state { struct platform_device *pdev; struct phy *phy; void __iomem *regs; - struct clk *wrap_clk; int irq; u32 flags; @@ -507,12 +516,7 @@ static void mipi_csis_set_params(struct csi_state *state) mipi_csis_write(state, MIPI_CSIS_ISPSYNC_CH0, val); val = mipi_csis_read(state, MIPI_CSIS_CLK_CTRL); - val &= ~MIPI_CSIS_CLK_CTRL_WCLK_SRC; - if (state->wrap_clk) - val |= MIPI_CSIS_CLK_CTRL_WCLK_SRC; - else - val &= ~MIPI_CSIS_CLK_CTRL_WCLK_SRC; - + val |= MIPI_CSIS_CLK_CTRL_WCLK_SRC; val |= MIPI_CSIS_CLK_CTRL_CLKGATE_TRAIL_CH0(15); val &= ~MIPI_CSIS_CLK_CTRL_CLKGATE_EN_MSK; mipi_csis_write(state, MIPI_CSIS_CLK_CTRL, val); @@ -557,12 +561,9 @@ static int mipi_csis_clk_get(struct csi_state *state) if (ret < 0) return ret; - state->wrap_clk = devm_clk_get(dev, "wrap"); - if (IS_ERR(state->wrap_clk)) - return PTR_ERR(state->wrap_clk); - /* Set clock rate */ - ret = clk_set_rate(state->wrap_clk, state->clk_frequency); + ret = clk_set_rate(state->clks[MIPI_CSIS_CLK_WRAP].clk, + state->clk_frequency); if (ret < 0) dev_err(dev, "set rate=%d failed: %d\n", state->clk_frequency, ret); @@ -1154,9 +1155,9 @@ static int mipi_csis_probe(struct platform_device *pdev) goto unregister_all; } - dev_info(&pdev->dev, "lanes: %d, hs_settle: %d, wclk: %d, freq: %u\n", + dev_info(&pdev->dev, "lanes: %d, hs_settle: %d, freq: %u\n", state->bus.num_data_lanes, state->hs_settle, - state->wrap_clk ? 1 : 0, state->clk_frequency); + state->clk_frequency); return 0;