From patchwork Tue Aug 22 16:19:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 13361171 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 33290EE4993 for ; Tue, 22 Aug 2023 16:20:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A91BB10E3A6; Tue, 22 Aug 2023 16:20:49 +0000 (UTC) Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by gabe.freedesktop.org (Postfix) with ESMTPS id C183C10E3A5 for ; Tue, 22 Aug 2023 16:20:11 +0000 (UTC) Received: from [127.0.1.1] (91-154-35-171.elisa-laajakaista.fi [91.154.35.171]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id BB48F396B; Tue, 22 Aug 2023 18:18:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1692721133; bh=dfvDuc3+OJeVTyiiwUXOv9K+PGAuzxd6tO3qEoOctDw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=X9hYlW9Xjwzwq7eUrYJUdv2nx73lICt9qbFKSviUXdrtQxWkZRWlhUU7eN6uTvs8q Jo9rGSiDCNFP64aFiWBJrr82/y9F4RmOPh2n7r1UvlcufWbq1tK4p+g0Dn2mr0NgHJ I5iCwglI204JlZsZVfqx4gCHTZMStNAL7dSoHFlY= From: Tomi Valkeinen Date: Tue, 22 Aug 2023 19:19:42 +0300 Subject: [PATCH v3 09/12] drm/bridge: tc358768: Rename dsibclk to hsbyteclk MIME-Version: 1.0 Message-Id: <20230822-tc358768-v3-9-c82405dac0c1@ideasonboard.com> References: <20230822-tc358768-v3-0-c82405dac0c1@ideasonboard.com> In-Reply-To: <20230822-tc358768-v3-0-c82405dac0c1@ideasonboard.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter , =?utf-8?q?P=C3=A9ter_Ujfalusi?= , Maxim Schwalm , Francesco Dolcini X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=7362; i=tomi.valkeinen@ideasonboard.com; h=from:subject:message-id; bh=dfvDuc3+OJeVTyiiwUXOv9K+PGAuzxd6tO3qEoOctDw=; b=owEBbQKS/ZANAwAIAfo9qoy8lh71AcsmYgBk5OAt7iW4LNztF4KjC75OeOjaYehOdMGnRvedl KUHh+2ZEfqJAjMEAAEIAB0WIQTEOAw+ll79gQef86f6PaqMvJYe9QUCZOTgLQAKCRD6PaqMvJYe 9Q2ZD/49qnm8OXtFtT5rjgwLRzX9ldGBSxmibb655ooYOEcNpS34mbF9gPQXgJDNFY67/Cz7bQ9 6ou77Zy6+WedlkwwCPP/GJgzO0kQ6+7vyIRaL1QvURNgYwbCItvZE/phhsk0x4eK9D9NoeUsvqD NBd5Ejm+BZ+RHhTIbA7OxhHAU8L9ZuCszLy4IoTAh7Hu6yX/VNJyiNYePeY3OfihdW+xkjhUn4j QjnCfsr6A7ahZnkKrX9OcMgeX0uwEpgqIw2iVHk3PK1pc7p5wT1wWwIOg4fhBTByYHFsU+/BKTf eh6R5TnXhJcbWS4WGEdgbuapeS5OEF4ppNeVSKJqV0zrLR23aidy2WCoM273KhDAWu942cgxVOG KRLBO6IzCfbir+cQ9PvfndMtIoJFQkMGVCGsuU/z6iAGCpZdqIBBtZdZxGTXwFaGW/EulCg5hoJ h8aGstcfFQnxOBhZh5BdbjBPMu6HGPGs9URqSuJ9kDfwuG2bXrltdvqnp9zkJ4E9Y+3s/PE5jIX 6Czd98xnOpsvheZaHex97YSOq/oGJwk8VzWmu4ayugBrua+cnScPfd1zMQ0I52f2J0OETU8wGWv bcb22jSipHERvhL/lvxAe6kVr9iuOzOIFwOcfdf0p6IGpPxn8x4rNuZwFc7uHyWZ+VXeYNHUkbn NjVkkJs/kBa/oaQ== X-Developer-Key: i=tomi.valkeinen@ideasonboard.com; a=openpgp; fpr=C4380C3E965EFD81079FF3A7FA3DAA8CBC961EF5 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tomi Valkeinen , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Aradhya Bhatia Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The Toshiba documentation talks about HSByteClk when referring to the DSI HS byte clock, whereas the driver uses 'dsibclk' name. Also, in a few places the driver calculates the byte clock from the DSI clock, even if the byte clock is already available in a variable. To align the driver with the documentation, change the 'dsibclk' variable to 'hsbyteclk'. This also make it easier to visually separate 'dsibclk' and 'dsiclk' variables. Reviewed-by: Peter Ujfalusi Signed-off-by: Tomi Valkeinen --- drivers/gpu/drm/bridge/tc358768.c | 48 +++++++++++++++++++-------------------- 1 file changed, 24 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c index 6297d28250e9..0f117d673b14 100644 --- a/drivers/gpu/drm/bridge/tc358768.c +++ b/drivers/gpu/drm/bridge/tc358768.c @@ -604,7 +604,7 @@ static int tc358768_setup_pll(struct tc358768_priv *priv, dev_dbg(priv->dev, "PLL: refclk %lu, fbd %u, prd %u, frs %u\n", clk_get_rate(priv->refclk), fbd, prd, frs); - dev_dbg(priv->dev, "PLL: pll_clk: %u, DSIClk %u, DSIByteClk %u\n", + dev_dbg(priv->dev, "PLL: pll_clk: %u, DSIClk %u, HSByteClk %u\n", priv->dsiclk * 2, priv->dsiclk, priv->dsiclk / 4); dev_dbg(priv->dev, "PLL: pclk %u (panel: %u)\n", tc358768_pll_to_pclk(priv, priv->dsiclk * 2), @@ -646,8 +646,8 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge) u32 val, val2, lptxcnt, hact, data_type; s32 raw_val; const struct drm_display_mode *mode; - u32 dsibclk_nsk, dsiclk_nsk, ui_nsk; - u32 dsiclk, dsibclk, video_start; + u32 hsbyteclk_nsk, dsiclk_nsk, ui_nsk; + u32 dsiclk, hsbyteclk, video_start; const u32 internal_delay = 40; int ret, i; struct videomode vm; @@ -678,7 +678,7 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge) drm_display_mode_to_videomode(mode, &vm); dsiclk = priv->dsiclk; - dsibclk = dsiclk / 4; + hsbyteclk = dsiclk / 4; /* Data Format Control Register */ val = BIT(2) | BIT(1) | BIT(0); /* rdswap_en | dsitx_en | txdt_en */ @@ -730,67 +730,67 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge) tc358768_write(priv, TC358768_D0W_CNTRL + i * 4, 0x0000); /* DSI Timings */ - dsibclk_nsk = (u32)div_u64((u64)1000000000 * TC358768_PRECISION, - dsibclk); + hsbyteclk_nsk = (u32)div_u64((u64)1000000000 * TC358768_PRECISION, + hsbyteclk); dsiclk_nsk = (u32)div_u64((u64)1000000000 * TC358768_PRECISION, dsiclk); ui_nsk = dsiclk_nsk / 2; dev_dbg(dev, "dsiclk_nsk: %u\n", dsiclk_nsk); dev_dbg(dev, "ui_nsk: %u\n", ui_nsk); - dev_dbg(dev, "dsibclk_nsk: %u\n", dsibclk_nsk); + dev_dbg(dev, "hsbyteclk_nsk: %u\n", hsbyteclk_nsk); /* LP11 > 100us for D-PHY Rx Init */ - val = tc358768_ns_to_cnt(100 * 1000, dsibclk_nsk) - 1; + val = tc358768_ns_to_cnt(100 * 1000, hsbyteclk_nsk) - 1; dev_dbg(dev, "LINEINITCNT: %u\n", val); tc358768_write(priv, TC358768_LINEINITCNT, val); /* LPTimeCnt > 50ns */ - val = tc358768_ns_to_cnt(50, dsibclk_nsk) - 1; + val = tc358768_ns_to_cnt(50, hsbyteclk_nsk) - 1; lptxcnt = val; dev_dbg(dev, "LPTXTIMECNT: %u\n", val); tc358768_write(priv, TC358768_LPTXTIMECNT, val); /* 38ns < TCLK_PREPARE < 95ns */ - val = tc358768_ns_to_cnt(65, dsibclk_nsk) - 1; + val = tc358768_ns_to_cnt(65, hsbyteclk_nsk) - 1; dev_dbg(dev, "TCLK_PREPARECNT %u\n", val); /* TCLK_PREPARE + TCLK_ZERO > 300ns */ val2 = tc358768_ns_to_cnt(300 - tc358768_to_ns(2 * ui_nsk), - dsibclk_nsk) - 2; + hsbyteclk_nsk) - 2; dev_dbg(dev, "TCLK_ZEROCNT %u\n", val2); val |= val2 << 8; tc358768_write(priv, TC358768_TCLK_HEADERCNT, val); /* TCLK_TRAIL > 60ns AND TEOT <= 105 ns + 12*UI */ - raw_val = tc358768_ns_to_cnt(60 + tc358768_to_ns(2 * ui_nsk), dsibclk_nsk) - 5; + raw_val = tc358768_ns_to_cnt(60 + tc358768_to_ns(2 * ui_nsk), hsbyteclk_nsk) - 5; val = clamp(raw_val, 0, 127); dev_dbg(dev, "TCLK_TRAILCNT: %u\n", val); tc358768_write(priv, TC358768_TCLK_TRAILCNT, val); /* 40ns + 4*UI < THS_PREPARE < 85ns + 6*UI */ val = 50 + tc358768_to_ns(4 * ui_nsk); - val = tc358768_ns_to_cnt(val, dsibclk_nsk) - 1; + val = tc358768_ns_to_cnt(val, hsbyteclk_nsk) - 1; dev_dbg(dev, "THS_PREPARECNT %u\n", val); /* THS_PREPARE + THS_ZERO > 145ns + 10*UI */ - raw_val = tc358768_ns_to_cnt(145 - tc358768_to_ns(3 * ui_nsk), dsibclk_nsk) - 10; + raw_val = tc358768_ns_to_cnt(145 - tc358768_to_ns(3 * ui_nsk), hsbyteclk_nsk) - 10; val2 = clamp(raw_val, 0, 127); dev_dbg(dev, "THS_ZEROCNT %u\n", val2); val |= val2 << 8; tc358768_write(priv, TC358768_THS_HEADERCNT, val); /* TWAKEUP > 1ms in lptxcnt steps */ - val = tc358768_ns_to_cnt(1020000, dsibclk_nsk); + val = tc358768_ns_to_cnt(1020000, hsbyteclk_nsk); val = val / (lptxcnt + 1) - 1; dev_dbg(dev, "TWAKEUP: %u\n", val); tc358768_write(priv, TC358768_TWAKEUP, val); /* TCLK_POSTCNT > 60ns + 52*UI */ val = tc358768_ns_to_cnt(60 + tc358768_to_ns(52 * ui_nsk), - dsibclk_nsk) - 3; + hsbyteclk_nsk) - 3; dev_dbg(dev, "TCLK_POSTCNT: %u\n", val); tc358768_write(priv, TC358768_TCLK_POSTCNT, val); /* max(60ns + 4*UI, 8*UI) < THS_TRAILCNT < 105ns + 12*UI */ raw_val = tc358768_ns_to_cnt(60 + tc358768_to_ns(18 * ui_nsk), - dsibclk_nsk) - 4; + hsbyteclk_nsk) - 4; val = clamp(raw_val, 0, 15); dev_dbg(dev, "THS_TRAILCNT: %u\n", val); tc358768_write(priv, TC358768_THS_TRAILCNT, val); @@ -804,11 +804,11 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge) (mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) ? 0 : BIT(0)); /* TXTAGOCNT[26:16] RXTASURECNT[10:0] */ - val = tc358768_to_ns((lptxcnt + 1) * dsibclk_nsk * 4); - val = tc358768_ns_to_cnt(val, dsibclk_nsk) / 4 - 1; + val = tc358768_to_ns((lptxcnt + 1) * hsbyteclk_nsk * 4); + val = tc358768_ns_to_cnt(val, hsbyteclk_nsk) / 4 - 1; dev_dbg(dev, "TXTAGOCNT: %u\n", val); - val2 = tc358768_ns_to_cnt(tc358768_to_ns((lptxcnt + 1) * dsibclk_nsk), - dsibclk_nsk) - 2; + val2 = tc358768_ns_to_cnt(tc358768_to_ns((lptxcnt + 1) * hsbyteclk_nsk), + hsbyteclk_nsk) - 2; dev_dbg(dev, "RXTASURECNT: %u\n", val2); val = val << 16 | val2; tc358768_write(priv, TC358768_BTACNTRL1, val); @@ -831,13 +831,13 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge) /* hsw * byteclk * ndl / pclk */ val = (u32)div_u64(vm.hsync_len * - ((u64)priv->dsiclk / 4) * priv->dsi_lanes, + (u64)hsbyteclk * priv->dsi_lanes, vm.pixelclock); tc358768_write(priv, TC358768_DSI_HSW, val); /* hbp * byteclk * ndl / pclk */ val = (u32)div_u64(vm.hback_porch * - ((u64)priv->dsiclk / 4) * priv->dsi_lanes, + (u64)hsbyteclk * priv->dsi_lanes, vm.pixelclock); tc358768_write(priv, TC358768_DSI_HBPR, val); } else { @@ -856,7 +856,7 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge) /* (hsw + hbp) * byteclk * ndl / pclk */ val = (u32)div_u64((vm.hsync_len + vm.hback_porch) * - ((u64)priv->dsiclk / 4) * priv->dsi_lanes, + (u64)hsbyteclk * priv->dsi_lanes, vm.pixelclock); tc358768_write(priv, TC358768_DSI_HSW, val);