From patchwork Tue Mar 7 15:00:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 660308 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 88FA1C678D4 for ; Tue, 7 Mar 2023 15:08:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230274AbjCGPIa (ORCPT ); Tue, 7 Mar 2023 10:08:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230298AbjCGPIH (ORCPT ); Tue, 7 Mar 2023 10:08:07 -0500 Received: from comms.puri.sm (comms.puri.sm [159.203.221.185]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 68ADE4FF1C; Tue, 7 Mar 2023 07:01:54 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id EF347FDA7E; Tue, 7 Mar 2023 07:01:34 -0800 (PST) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kw7ysgBL9VYr; Tue, 7 Mar 2023 07:01:33 -0800 (PST) From: Martin Kepplinger DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=puri.sm; s=comms; t=1678201293; bh=jlx4mkYv8DWYEk8wvjS1oACmUl5j+kfP5YErl2ThcKQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BQ+JaQmH+kCmbzeAvnKQ9GbiSzv1VOPFzi4IrjiRt/0+x+twMiYXWSoT4BZAiEZyW 7v0BhUXXqbGjjSmwCGJ42+/2u19XXjQl6vmz5loLuNTQFLCKBKw+PZtXfrD0amZK74 r5DHaAXxG+o0BzOYM/xqIb5HLD3K5/0thDY44VuStdOt4ho6OQ1WLR1v30IF3PwoCy 1TGJ0eEh3ASMaWseGxO4rnq4/VXE8tykUlAN7m9hNDvj/pbUhypyQGdDcjcoB2uFGu M0TElc6F/SIMtXo62+T+SPK1qghqJXK0wefIKaqdDj2dyFfCruRD9nmynx5vuU/+FB LXb7G414LHPHg== To: laurent.pinchart@ideasonboard.com, slongerbeam@gmail.com, p.zabel@pengutronix.de, mchehab@kernel.org, gregkh@linuxfoundation.org, shawnguo@kernel.org Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@puri.sm, Martin Kepplinger Subject: [PATCH v2 2/2] media: imx: imx8mq-mipi-csi2: remove unneeded state variable and function Date: Tue, 7 Mar 2023 16:00:47 +0100 Message-Id: <20230307150047.1486186-3-martin.kepplinger@puri.sm> In-Reply-To: <20230307150047.1486186-1-martin.kepplinger@puri.sm> References: <20230307150047.1486186-1-martin.kepplinger@puri.sm> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Clean up the driver a bit by inlining the imx8mq_mipi_csi_system_enable() function to the callsites and removing the hs_settle variable from the driver state. Signed-off-by: Martin Kepplinger Reviewed-by: Laurent Pinchart --- drivers/staging/media/imx/imx8mq-mipi-csi2.c | 41 ++++++++------------ 1 file changed, 16 insertions(+), 25 deletions(-) diff --git a/drivers/staging/media/imx/imx8mq-mipi-csi2.c b/drivers/staging/media/imx/imx8mq-mipi-csi2.c index 1aa8622a3bae..f10b59b8f1c0 100644 --- a/drivers/staging/media/imx/imx8mq-mipi-csi2.c +++ b/drivers/staging/media/imx/imx8mq-mipi-csi2.c @@ -119,9 +119,8 @@ struct csi_state { struct v4l2_mbus_config_mipi_csi2 bus; - struct mutex lock; /* Protect state and hs_settle */ + struct mutex lock; /* Protect state */ u32 state; - u32 hs_settle; struct regmap *phy_gpr; u8 phy_gpr_reg; @@ -264,23 +263,6 @@ static int imx8mq_mipi_csi_sw_reset(struct csi_state *state) return 0; } -static void imx8mq_mipi_csi_system_enable(struct csi_state *state, int on) -{ - if (!on) { - imx8mq_mipi_csi_write(state, CSI2RX_CFG_DISABLE_DATA_LANES, 0xf); - return; - } - - regmap_update_bits(state->phy_gpr, - state->phy_gpr_reg, - 0x3fff, - GPR_CSI2_1_RX_ENABLE | - GPR_CSI2_1_VID_INTFC_ENB | - GPR_CSI2_1_HSEL | - GPR_CSI2_1_CONT_CLK_MODE | - GPR_CSI2_1_S_PRG_RXHS_SETTLE(state->hs_settle)); -} - static void imx8mq_mipi_csi_set_params(struct csi_state *state) { int lanes = state->bus.num_data_lanes; @@ -321,7 +303,8 @@ static int imx8mq_mipi_csi_clk_get(struct csi_state *state) } static int imx8mq_mipi_csi_calc_hs_settle(struct csi_state *state, - struct v4l2_subdev_state *sd_state) + struct v4l2_subdev_state *sd_state, + u32 *hs_settle) { s64 link_freq; u32 lane_rate; @@ -377,10 +360,10 @@ static int imx8mq_mipi_csi_calc_hs_settle(struct csi_state *state, max_ths_settle = 140 + 10 * 1000000 / (lane_rate / 1000); ths_settle_ns = (min_ths_settle + max_ths_settle) / 2; - state->hs_settle = ths_settle_ns / esc_clk_period_ns - 1; + *hs_settle = ths_settle_ns / esc_clk_period_ns - 1; dev_dbg(state->dev, "lane rate %u Ths_settle %u hs_settle %u\n", - lane_rate, ths_settle_ns, state->hs_settle); + lane_rate, ths_settle_ns, *hs_settle); return 0; } @@ -389,24 +372,32 @@ static int imx8mq_mipi_csi_start_stream(struct csi_state *state, struct v4l2_subdev_state *sd_state) { int ret; + u32 hs_settle; ret = imx8mq_mipi_csi_sw_reset(state); if (ret) return ret; imx8mq_mipi_csi_set_params(state); - ret = imx8mq_mipi_csi_calc_hs_settle(state, sd_state); + ret = imx8mq_mipi_csi_calc_hs_settle(state, sd_state, &hs_settle); if (ret) return ret; - imx8mq_mipi_csi_system_enable(state, true); + regmap_update_bits(state->phy_gpr, + state->phy_gpr_reg, + 0x3fff, + GPR_CSI2_1_RX_ENABLE | + GPR_CSI2_1_VID_INTFC_ENB | + GPR_CSI2_1_HSEL | + GPR_CSI2_1_CONT_CLK_MODE | + GPR_CSI2_1_S_PRG_RXHS_SETTLE(hs_settle)); return 0; } static void imx8mq_mipi_csi_stop_stream(struct csi_state *state) { - imx8mq_mipi_csi_system_enable(state, false); + imx8mq_mipi_csi_write(state, CSI2RX_CFG_DISABLE_DATA_LANES, 0xf); } /* -----------------------------------------------------------------------------