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[131.252.210.177]) by mx.google.com with ESMTPS id l189si782079pgd.800.2022.02.10.02.35.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Feb 2022 02:35:05 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of dri-devel-bounces@lists.freedesktop.org designates 131.252.210.177 as permitted sender) client-ip=131.252.210.177; Authentication-Results: mx.google.com; dkim=fail header.i=@kernel.org header.s=k20201202 header.b=eZTniK0F; spf=pass (google.com: best guess record for domain of dri-devel-bounces@lists.freedesktop.org designates 131.252.210.177 as permitted sender) smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4011110E7CB; Thu, 10 Feb 2022 10:35:04 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7903510E7CB; Thu, 10 Feb 2022 10:35:03 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C507961BAC; Thu, 10 Feb 2022 10:35:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F1DFC340ED; Thu, 10 Feb 2022 10:34:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1644489302; bh=FEN7VVNST9n4JFvHz5myS2O77Bm1VxR9soaeXQ2PILM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eZTniK0F6a6dyrWcBoDFBDkBPK6QI9GShWCjxqKEdI8XFfBWWDApDR+0i2HT1dOfz SWGfDmQgbBbUR8TFZEh8y9npRa6qBTL39yoohha9EXzQ9Kn1uZOY/GgSgnl8LXGIW2 +55Xm1dE2L1ySN32FxIScnqOuhG2wC+qXlB0i9LDQh8E1IZmMaPgTXwjpnMH8koNxg VjkrDoz2Lho+SQDax9M2bT52LuwprErgwYHvJGldpa89N+a8LOmBKeQx1/6T/AYMBg Td6GNb+P4i75NvfP5t/uJRz7XqO4U2iJGrSmnQdNUq++8gEMTx00OgHcb19+0/AWXG 8Ozku3Tq5JBVg== From: Vinod Koul To: Rob Clark Subject: [REPOST PATCH v4 07/13] drm/msm/disp/dpu1: Add support for DSC in encoder Date: Thu, 10 Feb 2022 16:04:17 +0530 Message-Id: <20220210103423.271016-8-vkoul@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220210103423.271016-1-vkoul@kernel.org> References: <20220210103423.271016-1-vkoul@kernel.org> MIME-Version: 1.0 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: Jonathan Marek , David Airlie , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Abhinav Kumar , Bjorn Andersson , Vinod Koul , dri-devel@lists.freedesktop.org, Dmitry Baryshkov , freedreno@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" We need to configure the encoder for DSC configuration and calculate DSC parameters for the given timing so this patch adds that support by adding dpu_encoder_prep_dsc() which is invoked when DSC is enabled. Signed-off-by: Vinod Koul Reviewed-by: Dmitry Baryshkov Reviewed-by: Abhinav Kumar --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 164 +++++++++++++++++- .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 8 + 2 files changed, 171 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 1e648db439f9..95a7bf362e81 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -21,6 +21,7 @@ #include "dpu_hw_intf.h" #include "dpu_hw_ctl.h" #include "dpu_hw_dspp.h" +#include "dpu_hw_dsc.h" #include "dpu_formats.h" #include "dpu_encoder_phys.h" #include "dpu_crtc.h" @@ -136,6 +137,8 @@ enum dpu_enc_rc_states { * @cur_slave: As above but for the slave encoder. * @hw_pp: Handle to the pingpong blocks used for the display. No. * pingpong blocks can be different than num_phys_encs. + * @hw_dsc: Handle to the DSC blocks used for the display. + * @dsc_mask: The bitmask of used DSC blocks. * @intfs_swapped: Whether or not the phys_enc interfaces have been swapped * for partial update right-only cases, such as pingpong * split where virtual pingpong does not generate IRQs @@ -169,6 +172,7 @@ enum dpu_enc_rc_states { * @topology: topology of the display * @idle_timeout: idle timeout duration in milliseconds * @dp: msm_dp pointer, for DP encoders + * @dsc: msm_display_dsc_config pointer, for DSC-enabled encoders */ struct dpu_encoder_virt { struct drm_encoder base; @@ -182,6 +186,9 @@ struct dpu_encoder_virt { struct dpu_encoder_phys *cur_master; struct dpu_encoder_phys *cur_slave; struct dpu_hw_pingpong *hw_pp[MAX_CHANNELS_PER_ENC]; + struct dpu_hw_dsc *hw_dsc[MAX_CHANNELS_PER_ENC]; + + unsigned int dsc_mask; bool intfs_swapped; @@ -209,6 +216,9 @@ struct dpu_encoder_virt { u32 idle_timeout; struct msm_dp *dp; + + /* DSC configuration */ + struct msm_display_dsc_config *dsc; }; #define to_dpu_encoder_virt(x) container_of(x, struct dpu_encoder_virt, base) @@ -972,7 +982,8 @@ static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc, struct dpu_hw_blk *hw_ctl[MAX_CHANNELS_PER_ENC]; struct dpu_hw_blk *hw_lm[MAX_CHANNELS_PER_ENC]; struct dpu_hw_blk *hw_dspp[MAX_CHANNELS_PER_ENC] = { NULL }; - int num_lm, num_ctl, num_pp; + struct dpu_hw_blk *hw_dsc[MAX_CHANNELS_PER_ENC]; + int num_lm, num_ctl, num_pp, num_dsc; int i, j; if (!drm_enc) { @@ -1027,6 +1038,23 @@ static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc, dpu_enc->hw_pp[i] = i < num_pp ? to_dpu_hw_pingpong(hw_pp[i]) : NULL; + dpu_enc->dsc_mask = 0; + + if (dpu_enc->dsc) { + unsigned int dsc_mask = 0; + + num_dsc = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, + drm_enc->base.id, DPU_HW_BLK_DSC, + hw_dsc, ARRAY_SIZE(hw_dsc)); + for (i = 0; i < MAX_CHANNELS_PER_ENC; i++) + dpu_enc->hw_dsc[i] = i < num_dsc ? to_dpu_hw_dsc(hw_dsc[i]) : NULL; + + for (i = 0; i < num_dsc; i++) + dsc_mask |= BIT(dpu_enc->hw_dsc[i]->idx - DSC_0); + + dpu_enc->dsc_mask = dsc_mask; + } + cstate = to_dpu_crtc_state(drm_crtc->state); for (i = 0; i < num_lm; i++) { @@ -1739,6 +1767,127 @@ static void dpu_encoder_vsync_event_work_handler(struct kthread_work *work) nsecs_to_jiffies(ktime_to_ns(wakeup_time))); } +static void +dpu_encoder_dsc_pclk_param_calc(struct msm_display_dsc_config *dsc, u32 width) +{ + int slice_count, slice_per_intf; + int bytes_in_slice, total_bytes_per_intf; + + if (!dsc || !dsc->drm->slice_width || !dsc->drm->slice_count) { + DPU_ERROR("Invalid DSC/slices\n"); + return; + } + + slice_count = dsc->drm->slice_count; + slice_per_intf = DIV_ROUND_UP(width, dsc->drm->slice_width); + + /* + * If slice_count is greater than slice_per_intf then default to 1. + * This can happen during partial update. + */ + if (slice_count > slice_per_intf) + slice_count = 1; + + bytes_in_slice = DIV_ROUND_UP(dsc->drm->slice_width * + dsc->drm->bits_per_pixel, 8); + total_bytes_per_intf = bytes_in_slice * slice_per_intf; + + dsc->eol_byte_num = total_bytes_per_intf % 3; + dsc->pclk_per_line = DIV_ROUND_UP(total_bytes_per_intf, 3); + dsc->bytes_in_slice = bytes_in_slice; + dsc->bytes_per_pkt = bytes_in_slice * slice_count; + dsc->pkt_per_line = slice_per_intf / slice_count; +} + +static void +dpu_encoder_dsc_initial_line_calc(struct msm_display_dsc_config *dsc, + u32 enc_ip_width) +{ + int ssm_delay, total_pixels, soft_slice_per_enc; + + soft_slice_per_enc = enc_ip_width / dsc->drm->slice_width; + + /* + * minimum number of initial line pixels is a sum of: + * 1. sub-stream multiplexer delay (83 groups for 8bpc, + * 91 for 10 bpc) * 3 + * 2. for two soft slice cases, add extra sub-stream multiplexer * 3 + * 3. the initial xmit delay + * 4. total pipeline delay through the "lock step" of encoder (47) + * 5. 6 additional pixels as the output of the rate buffer is + * 48 bits wide + */ + ssm_delay = ((dsc->drm->bits_per_component < 10) ? 84 : 92); + total_pixels = ssm_delay * 3 + dsc->drm->initial_xmit_delay + 47; + if (soft_slice_per_enc > 1) + total_pixels += (ssm_delay * 3); + dsc->initial_lines = DIV_ROUND_UP(total_pixels, dsc->drm->slice_width); +} + +static void dpu_encoder_dsc_pipe_cfg(struct dpu_hw_dsc *hw_dsc, + struct dpu_hw_pingpong *hw_pp, + struct msm_display_dsc_config *dsc, + u32 common_mode) +{ + if (hw_dsc->ops.dsc_config) + hw_dsc->ops.dsc_config(hw_dsc, dsc, common_mode); + + if (hw_dsc->ops.dsc_config_thresh) + hw_dsc->ops.dsc_config_thresh(hw_dsc, dsc); + + if (hw_pp->ops.setup_dsc) + hw_pp->ops.setup_dsc(hw_pp); + + if (hw_pp->ops.enable_dsc) + hw_pp->ops.enable_dsc(hw_pp); +} + +static void dpu_encoder_prep_dsc(struct dpu_encoder_virt *dpu_enc, + struct msm_display_dsc_config *dsc) +{ + /* coding only for 2LM, 2enc, 1 dsc config */ + struct dpu_encoder_phys *enc_master = dpu_enc->cur_master; + struct dpu_hw_dsc *hw_dsc[MAX_CHANNELS_PER_ENC]; + struct dpu_hw_pingpong *hw_pp[MAX_CHANNELS_PER_ENC]; + int this_frame_slices; + int intf_ip_w, enc_ip_w; + int dsc_common_mode; + int pic_width; + int i; + + for (i = 0; i < MAX_CHANNELS_PER_ENC; i++) { + hw_pp[i] = dpu_enc->hw_pp[i]; + hw_dsc[i] = dpu_enc->hw_dsc[i]; + + if (!hw_pp[i] || !hw_dsc[i]) { + DPU_ERROR_ENC(dpu_enc, "invalid params for DSC\n"); + return; + } + } + + dsc_common_mode = 0; + pic_width = dsc->drm->pic_width; + + dsc_common_mode = DSC_MODE_MULTIPLEX | DSC_MODE_SPLIT_PANEL; + if (enc_master->intf_mode == INTF_MODE_VIDEO) + dsc_common_mode |= DSC_MODE_VIDEO; + + this_frame_slices = pic_width / dsc->drm->slice_width; + intf_ip_w = this_frame_slices * dsc->drm->slice_width; + + dpu_encoder_dsc_pclk_param_calc(dsc, intf_ip_w); + + /* + * dsc merge case: when using 2 encoders for the same stream, + * no. of slices need to be same on both the encoders. + */ + enc_ip_w = intf_ip_w / 2; + dpu_encoder_dsc_initial_line_calc(dsc, enc_ip_w); + + for (i = 0; i < MAX_CHANNELS_PER_ENC; i++) + dpu_encoder_dsc_pipe_cfg(hw_dsc[i], hw_pp[i], dsc, dsc_common_mode); +} + void dpu_encoder_prepare_for_kickoff(struct drm_encoder *drm_enc) { struct dpu_encoder_virt *dpu_enc; @@ -1770,6 +1919,9 @@ void dpu_encoder_prepare_for_kickoff(struct drm_encoder *drm_enc) dpu_encoder_helper_hw_reset(dpu_enc->phys_encs[i]); } } + + if (dpu_enc->dsc) + dpu_encoder_prep_dsc(dpu_enc, dpu_enc->dsc); } void dpu_encoder_kickoff(struct drm_encoder *drm_enc) @@ -2015,6 +2167,8 @@ static int dpu_encoder_setup_display(struct dpu_encoder_virt *dpu_enc, dpu_enc->idle_pc_supported = dpu_kms->catalog->caps->has_idle_pc; + dpu_enc->dsc = disp_info->dsc; + mutex_lock(&dpu_enc->enc_lock); for (i = 0; i < disp_info->num_of_h_tiles && !ret; i++) { /* @@ -2244,3 +2398,11 @@ enum dpu_intf_mode dpu_encoder_get_intf_mode(struct drm_encoder *encoder) return INTF_MODE_NONE; } + +unsigned int dpu_encoder_helper_get_dsc(struct dpu_encoder_phys *phys_enc) +{ + struct drm_encoder *encoder = phys_enc->parent; + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(encoder); + + return dpu_enc->dsc_mask; +} diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h index e7270eb6b84b..7b90d644a41b 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h @@ -332,6 +332,14 @@ static inline enum dpu_3d_blend_mode dpu_encoder_helper_get_3d_blend_mode( return BLEND_3D_NONE; } +/** + * dpu_encoder_helper_get_dsc - get DSC blocks mask for the DPU encoder + * This helper function is used by physical encoder to get DSC blocks mask + * used for this encoder. + * @phys_enc: Pointer to physical encoder structure + */ +unsigned int dpu_encoder_helper_get_dsc(struct dpu_encoder_phys *phys_enc); + /** * dpu_encoder_helper_split_config - split display configuration helper function * This helper function may be used by physical encoders to configure