From patchwork Wed Apr 24 09:16:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shuijing Li X-Patchwork-Id: 13641618 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 75753C4345F for ; Wed, 24 Apr 2024 09:17:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=fJ7tnDohrfJMoaVIcwqC3Sh98iQbQepfzaLOmQVmHEk=; b=KUwsvNbmvjYJli 30svm5y9P+oS19Hz/iTVJ5dr2J+GJD0L7q5NgArV1Ci7Kk4SKUWkWjwIKrfqhoC4DNxKvmIk8vUQv 2gLXQ1FNMwZFC0RPCp8qInIxnLwFd1+FLuN0g1DtlAX7bIMDheJ7TnNOUGCdSZxqZ9iertn9Yf3TC K8fzBNc58UgXp+xLQpwGj9gKizWXejrQlHY0v6GZ7tP3sh3KO9wDo3/r79bDRMCHvBd5T3uwLp+td RoscmBxvNiFD8LP5yEw1LrMhRYEeCJ2KD9R7Wa2H4UvG+QCYzq12viLXJh0/IXhSoUnFQLrtqYLtg GrnguUijbGWUJuR0bSaA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rzYkJ-00000003TBR-3aVo; Wed, 24 Apr 2024 09:16:55 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rzYkB-00000003T6O-0xu5; Wed, 24 Apr 2024 09:16:53 +0000 X-UUID: 5e388dc8021b11ef96d5dfc950b7243d-20240424 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=br837wlQ7MLwVsU8y/eaMf0azwp0oj4BOUqIIRSwQs0=; b=hmXhE+35pdB5PHc3J7u8FdjXROf4s6H/DnVtJ/rUjbtzQLQVIYd4N0dHy8A+L/gozr2jCGtTnQ24VA77wJQ9cZYii79uGJ8iLOj5OE3hkjiDOYdiHLyCsCIhx5+l8xVqr7WcAs5kgjqQAljCwxtJRPwENR1QHkBARpAVcYyaCLk=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.38,REQID:b909a99f-b23e-4b83-bb23-2ab5666445fa,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:82c5f88,CLOUDID:b9540e83-4f93-4875-95e7-8c66ea833d57,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES :1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULN X-UUID: 5e388dc8021b11ef96d5dfc950b7243d-20240424 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 532195134; Wed, 24 Apr 2024 02:16:43 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by MTKMBS09N1.mediatek.inc (172.21.101.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 24 Apr 2024 17:16:41 +0800 Received: from mszsdhlt06.gcn.mediatek.inc (10.16.6.206) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Wed, 24 Apr 2024 17:16:40 +0800 From: Shuijing Li To: , , , , , , CC: , , , , , Shuijing Li Subject: [PATCH v2] drm/mediatek: dsi: Add dsi per-frame lp code for mt8188 Date: Wed, 24 Apr 2024 17:16:27 +0800 Message-ID: <20240424091639.22759-1-shuijing.li@mediatek.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240424_021647_405248_C6E07101 X-CRM114-Status: GOOD ( 14.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Adding the per-frame lp function of mt8188, which can keep HFP in HS and reduce the time required for each line to enter and exit low power. Per Frame LP: |<----------One Active Frame-------->| --______________________________________----___________________ ^HSA+HBP^^RGB^^HFP^^HSA+HBP^^RGB^^HFP^ ^HSA+HBP^^RGB^^HFP^ Per Line LP: |<---------------One Active Frame----------->| --______________--______________--______________----______________ ^HSA+HBP^^RGB^ ^HSA+HBP^^RGB^ ^HSA+HBP^^RGB^ ^HSA+HBP^^RGB^ Signed-off-by: Shuijing Li --- Changes in v2: Use bitfield macros and add new function for per prame lp and improve the format, per suggestion frome previous thread: https://patchwork.kernel.org/project/linux-mediatek/patch/20240314094238.3315-1-shuijing.li@mediatek.com/ --- drivers/gpu/drm/mediatek/mtk_dsi.c | 143 +++++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 9501f4019199..75719b0535f7 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -68,6 +68,8 @@ #define EXT_TE_EDGE BIT(10) #define MAX_RTN_SIZE GENMASK(15, 12) #define HSTX_CKLP_EN BIT(16) +#define HSTX_BLLP_EN_SHIFT 7 +#define HSTX_BLLP_EN_MASK 0x1 #define DSI_PSCTRL 0x1c #define DSI_PS_WC GENMASK(13, 0) @@ -76,6 +78,8 @@ #define PACKED_PS_18BIT_RGB666 1 #define LOOSELY_PS_24BIT_RGB666 2 #define PACKED_PS_24BIT_RGB888 3 +#define PS_WC_SHIFT 0 +#define PS_WC_MASK 0x7fff #define DSI_VSA_NL 0x20 #define DSI_VBP_NL 0x24 @@ -88,12 +92,20 @@ #define DSI_HSA_WC 0x50 #define DSI_HBP_WC 0x54 #define DSI_HFP_WC 0x58 +#define HFP_HS_EN 31 +#define HFP_HS_VB_PS_WC_SHIFT 16 + +#define DSI_BLLP_WC 0x5C +#define BLLP_WC_SHIFT 0 +#define BLLP_WC_MASK 0xfff #define DSI_CMDQ_SIZE 0x60 #define CMDQ_SIZE 0x3f #define CMDQ_SIZE_SEL BIT(15) #define DSI_HSTX_CKL_WC 0x64 +#define HSTX_CKL_WC_SHIFT 2 +#define HSTX_CKL_WC_MASK 0x3fff #define DSI_RX_DATA0 0x74 #define DSI_RX_DATA1 0x78 @@ -118,12 +130,22 @@ #define HS_PREP GENMASK(15, 8) #define HS_ZERO GENMASK(23, 16) #define HS_TRAIL GENMASK(31, 24) +#define LPX_SHIFT 0 +#define LPX_MASK 0xff +#define DA_HS_PREP_SHIFT 8 +#define DA_HS_PREP_MASK 0xff +#define DA_HS_ZERO_SHIFT 16 +#define DA_HS_ZERO_MASK 0xff +#define DA_HS_TRAIL_SHIFT 24 +#define DA_HS_TRAIL_MASK 0xff #define DSI_PHY_TIMECON1 0x114 #define TA_GO GENMASK(7, 0) #define TA_SURE GENMASK(15, 8) #define TA_GET GENMASK(23, 16) #define DA_HS_EXIT GENMASK(31, 24) +#define DA_HS_EXIT_SHIFT 24 +#define DA_HS_EXIT_MASK 0xff #define DSI_PHY_TIMECON2 0x118 #define CONT_DET GENMASK(7, 0) @@ -154,6 +176,7 @@ #define DATA_1 GENMASK(31, 24) #define NS_TO_CYCLE(n, c) ((n) / (c) + (((n) % (c)) ? 1 : 0)) +#define REG_FIELD_VALUE(reg, field) (((reg) >> (field##_SHIFT)) & (field##_MASK)) #define MTK_DSI_HOST_IS_READ(type) \ ((type == MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM) || \ @@ -187,6 +210,7 @@ struct mtk_dsi_driver_data { bool has_shadow_ctl; bool has_size_ctl; bool cmdq_long_packet_ctl; + bool support_per_frame_lp; }; struct mtk_dsi { @@ -425,6 +449,121 @@ static void mtk_dsi_ps_control(struct mtk_dsi *dsi, bool config_vact) writel(ps_val, dsi->regs + DSI_PSCTRL); } +static void mtk_dsi_config_vdo_timing_per_frame_lp(struct mtk_dsi *dsi) +{ + u32 horizontal_sync_active_byte; + u32 horizontal_backporch_byte; + u32 horizontal_frontporch_byte; + u32 dsi_tmp_buf_bpp; + unsigned int lpx, da_hs_exit, da_hs_prep, da_hs_trail; + unsigned int da_hs_zero, ps_wc, hs_vb_ps_wc; + u32 bllp_wc, bllp_en, v_active_roundup, hstx_cklp_wc; + u32 hstx_cklp_wc_max, hstx_cklp_wc_min; + struct videomode *vm = &dsi->vm; + + if (dsi->format == MIPI_DSI_FMT_RGB565) + dsi_tmp_buf_bpp = 2; + else + dsi_tmp_buf_bpp = 3; + + da_hs_trail = REG_FIELD_VALUE(readl(dsi->regs + DSI_PHY_TIMECON0), + DA_HS_TRAIL); + bllp_en = REG_FIELD_VALUE(readl(dsi->regs + DSI_TXRX_CTRL), + HSTX_BLLP_EN); + if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) { + horizontal_sync_active_byte = + vm->hsync_len * dsi_tmp_buf_bpp - 10; + horizontal_backporch_byte = + vm->hback_porch * dsi_tmp_buf_bpp - 10; + horizontal_frontporch_byte = + vm->hfront_porch * dsi_tmp_buf_bpp - 12; + + ps_wc = REG_FIELD_VALUE(readl(dsi->regs + DSI_PSCTRL), PS_WC); + v_active_roundup = (32 + horizontal_sync_active_byte + + horizontal_backporch_byte + ps_wc + + horizontal_frontporch_byte) % dsi->lanes; + if (v_active_roundup) + horizontal_backporch_byte = horizontal_backporch_byte + + dsi->lanes - v_active_roundup; + hstx_cklp_wc_min = (DIV_ROUND_UP((12 + 2 + 4 + + horizontal_sync_active_byte), dsi->lanes) + da_hs_trail + 1) + * dsi->lanes / 6 - 1; + hstx_cklp_wc_max = (DIV_ROUND_UP((20 + 6 + 4 + + horizontal_sync_active_byte + horizontal_backporch_byte + + ps_wc), dsi->lanes) + da_hs_trail + 1) * dsi->lanes / 6 - 1; + } else { + horizontal_sync_active_byte = vm->hsync_len * dsi_tmp_buf_bpp - 4; + + horizontal_backporch_byte = (vm->hback_porch + vm->hsync_len) * + dsi_tmp_buf_bpp - 10; + hstx_cklp_wc_min = (DIV_ROUND_UP(4, dsi->lanes) + da_hs_trail + 1) + * dsi->lanes / 6 - 1; + + if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) { + ps_wc = REG_FIELD_VALUE(readl(dsi->regs + DSI_PSCTRL), PS_WC); + bllp_wc = REG_FIELD_VALUE(readl(dsi->regs + DSI_BLLP_WC), BLLP_WC); + horizontal_frontporch_byte = (vm->hfront_porch * + dsi_tmp_buf_bpp - 18); + + v_active_roundup = (28 + horizontal_backporch_byte + ps_wc + + horizontal_frontporch_byte + bllp_wc) % dsi->lanes; + if (v_active_roundup) + horizontal_backporch_byte = horizontal_backporch_byte + + dsi->lanes - v_active_roundup; + if (bllp_en) { + hstx_cklp_wc_max = (DIV_ROUND_UP((16 + 6 + 4 + + horizontal_backporch_byte + bllp_wc + ps_wc), + dsi->lanes) + da_hs_trail + 1) * dsi->lanes / 6 - 1; + } else { + hstx_cklp_wc_max = (DIV_ROUND_UP((12 + 4 + 4 + + horizontal_backporch_byte + bllp_wc + ps_wc), + dsi->lanes) + da_hs_trail + 1) * dsi->lanes / 6 - 1; + } + } else { + ps_wc = REG_FIELD_VALUE(readl(dsi->regs + DSI_PSCTRL), PS_WC); + horizontal_frontporch_byte = (vm->hfront_porch * + dsi_tmp_buf_bpp - 12); + + v_active_roundup = (22 + horizontal_backporch_byte + ps_wc + + horizontal_frontporch_byte) % dsi->lanes; + if (v_active_roundup) + horizontal_backporch_byte = horizontal_backporch_byte + + dsi->lanes - v_active_roundup; + + hstx_cklp_wc_max = (DIV_ROUND_UP((12 + 4 + 4 + + horizontal_backporch_byte + ps_wc), + dsi->lanes) + da_hs_trail + 1) * dsi->lanes / 6 - 1; + } + } + hstx_cklp_wc = REG_FIELD_VALUE(ps_wc, HSTX_CKL_WC); + if (hstx_cklp_wc <= hstx_cklp_wc_min || + hstx_cklp_wc >= hstx_cklp_wc_max) { + hstx_cklp_wc = (hstx_cklp_wc_max / 2) << HSTX_CKL_WC_SHIFT; + writel(hstx_cklp_wc, dsi->regs + DSI_HSTX_CKL_WC); + } + hstx_cklp_wc = hstx_cklp_wc >> HSTX_CKL_WC_SHIFT; + if (hstx_cklp_wc <= hstx_cklp_wc_min || + hstx_cklp_wc >= hstx_cklp_wc_max) { + DRM_WARN("Wrong setting of hstx_ckl_wc\n"); + } + + lpx = REG_FIELD_VALUE(readl(dsi->regs + DSI_PHY_TIMECON0), LPX); + da_hs_exit = REG_FIELD_VALUE(readl(dsi->regs + DSI_PHY_TIMECON1), DA_HS_EXIT); + da_hs_prep = REG_FIELD_VALUE(readl(dsi->regs + DSI_PHY_TIMECON0), DA_HS_PREP); + da_hs_zero = REG_FIELD_VALUE(readl(dsi->regs + DSI_PHY_TIMECON0), DA_HS_ZERO); + ps_wc = REG_FIELD_VALUE(readl(dsi->regs + DSI_PSCTRL), PS_WC); + hs_vb_ps_wc = ps_wc - + (lpx + da_hs_exit + da_hs_prep + da_hs_zero + 2) + * dsi->lanes; + horizontal_frontporch_byte = (1 << HFP_HS_EN) + | (hs_vb_ps_wc << HFP_HS_VB_PS_WC_SHIFT) + | (horizontal_frontporch_byte); + + writel(horizontal_sync_active_byte, dsi->regs + DSI_HSA_WC); + writel(horizontal_backporch_byte, dsi->regs + DSI_HBP_WC); + writel(horizontal_frontporch_byte, dsi->regs + DSI_HFP_WC); +} + static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) { u32 horizontal_sync_active_byte; @@ -499,6 +638,9 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) writel(horizontal_backporch_byte, dsi->regs + DSI_HBP_WC); writel(horizontal_frontporch_byte, dsi->regs + DSI_HFP_WC); + if (dsi->driver_data->support_per_frame_lp) + mtk_dsi_config_vdo_timing_per_frame_lp(dsi); + mtk_dsi_ps_control(dsi, false); } @@ -1193,6 +1335,7 @@ static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = { .has_shadow_ctl = true, .has_size_ctl = true, .cmdq_long_packet_ctl = true, + .support_per_frame_lp = true, }; static const struct of_device_id mtk_dsi_of_match[] = {