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Message-ID: <a55367b7-f756-2960-3dee-319d3fa2a190@linaro.org>
Date: Tue, 24 Jan 2023 00:06:14 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Kuogee Hsieh <quic_khsieh@...cinc.com>,
dri-devel@...ts.freedesktop.org, robdclark@...il.com,
sean@...rly.run, swboyd@...omium.org, dianders@...omium.org,
vkoul@...nel.org, daniel@...ll.ch, airlied@...il.com,
agross@...nel.org, andersson@...nel.org
Cc: quic_abhinavk@...cinc.com, quic_sbillaka@...cinc.com,
freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 09/14] drm/msm/dsi: export struct msm_compression_info
to dpu encoder
On 23/01/2023 20:24, Kuogee Hsieh wrote:
> struct msm_compression_info is used to support several different
> compression mechanisms. It also contains customized info required
> to configure DSC encoder engine. This patch also make changes DSI
> module to have DSI exports struct msm_compreion_info to dpu encoder
> instead of struct drm_dsc_config.
Let's see how patch 07 evolves first. But generally I don't like the
idea of passing around another wrapper structure.
>
> Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 7 +++++--
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 4 ++--
> drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 10 ++++++++--
> drivers/gpu/drm/msm/dsi/dsi.c | 3 ++-
> drivers/gpu/drm/msm/dsi/dsi.h | 3 ++-
> drivers/gpu/drm/msm/dsi/dsi_host.c | 14 ++++++++++++--
> drivers/gpu/drm/msm/msm_drv.h | 4 ++--
> 7 files changed, 33 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index 758261e..7f4a439 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -2,7 +2,7 @@
> /*
> * Copyright (C) 2013 Red Hat
> * Copyright (c) 2014-2018, 2020-2021 The Linux Foundation. All rights reserved.
> - * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
> *
> * Author: Rob Clark <robdclark@...il.com>
> */
> @@ -210,6 +210,7 @@ struct dpu_encoder_virt {
>
> /* DSC configuration */
> struct drm_dsc_config *dsc;
> + struct msm_compression_info *comp_info;
> };
>
> #define to_dpu_encoder_virt(x) container_of(x, struct dpu_encoder_virt, base)
> @@ -2275,7 +2276,9 @@ 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;
> + dpu_enc->comp_info = disp_info->comp_info;
> + if (dpu_enc->comp_info)
> + dpu_enc->dsc = &dpu_enc->comp_info->msm_dsc_info.drm_dsc;
>
> mutex_lock(&dpu_enc->enc_lock);
> for (i = 0; i < disp_info->num_of_h_tiles && !ret; i++) {
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> index 9e7236e..bd2da5e 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> @@ -1,6 +1,6 @@
> /* SPDX-License-Identifier: GPL-2.0-only */
> /*
> - * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
> * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
> * Copyright (C) 2013 Red Hat
> * Author: Rob Clark <robdclark@...il.com>
> @@ -36,7 +36,7 @@ struct msm_display_info {
> uint32_t h_tile_instance[MAX_H_TILES_PER_DISPLAY];
> bool is_cmd_mode;
> bool is_te_using_watchdog_timer;
> - struct drm_dsc_config *dsc;
> + struct msm_compression_info *comp_info;
> };
>
> /**
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index d612419..70a74ed 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -2,7 +2,7 @@
> /*
> * Copyright (C) 2013 Red Hat
> * Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
> - * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
> *
> * Author: Rob Clark <robdclark@...il.com>
> */
> @@ -570,7 +570,7 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
> info.h_tile_instance[info.num_of_h_tiles++] = i;
> info.is_cmd_mode = msm_dsi_is_cmd_mode(priv->dsi[i]);
>
> - info.dsc = msm_dsi_get_dsc_config(priv->dsi[i]);
> + info.comp_info = msm_dsi_get_dsc_config(priv->dsi[i]);
>
> if (msm_dsi_is_bonded_dsi(priv->dsi[i]) && priv->dsi[other]) {
> rc = msm_dsi_modeset_init(priv->dsi[other], dev, encoder);
> @@ -622,6 +622,8 @@ static int _dpu_kms_initialize_displayport(struct drm_device *dev,
> info.num_of_h_tiles = 1;
> info.h_tile_instance[0] = i;
> info.intf_type = encoder->encoder_type;
> + info.is_cmd_mode = 0; /* dp always video mode */
> + info.comp_info = NULL;
> rc = dpu_encoder_setup(dev, encoder, &info);
> if (rc) {
> DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
> @@ -892,6 +894,10 @@ static void dpu_kms_mdp_snapshot(struct msm_disp_state *disp_state, struct msm_k
>
> pm_runtime_get_sync(&dpu_kms->pdev->dev);
>
> + for (i = 0; i < cat->dsc_count; i++)
> + msm_disp_snapshot_add_block(disp_state, cat->dsc[i].len,
> + dpu_kms->mmio + cat->dsc[i].base, "dsc_%d", i);
> +
unrelated, isn't it?
> /* dump CTL sub-blocks HW regs info */
> for (i = 0; i < cat->ctl_count; i++)
> msm_disp_snapshot_add_block(disp_state, cat->ctl[i].len,
> diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
> index 31fdee2..52b7e33 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi.c
> @@ -1,6 +1,7 @@
> // SPDX-License-Identifier: GPL-2.0-only
> /*
> * Copyright (c) 2015, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023. Qualcomm Innovation Center, Inc. All rights reserved
> */
>
> #include "dsi.h"
> @@ -13,7 +14,7 @@ bool msm_dsi_is_cmd_mode(struct msm_dsi *msm_dsi)
> return !(host_flags & MIPI_DSI_MODE_VIDEO);
> }
>
> -struct drm_dsc_config *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi)
> +struct msm_compression_info *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi)
> {
> return msm_dsi_host_get_dsc_config(msm_dsi->host);
> }
> diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
> index bd3763a..79ada54 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi.h
> +++ b/drivers/gpu/drm/msm/dsi/dsi.h
> @@ -1,6 +1,7 @@
> /* SPDX-License-Identifier: GPL-2.0-only */
> /*
> * Copyright (c) 2015, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023. Qualcomm Innovation Center, Inc. All rights reserved
> */
>
> #ifndef __DSI_CONNECTOR_H__
> @@ -133,7 +134,7 @@ int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
> int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
> void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_host *host);
> void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host);
> -struct drm_dsc_config *msm_dsi_host_get_dsc_config(struct mipi_dsi_host *host);
> +struct msm_compression_info *msm_dsi_host_get_dsc_config(struct mipi_dsi_host *host);
>
> /* dsi phy */
> struct msm_dsi_phy;
> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
> index 18fa30e..6188f4b 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
> @@ -1,6 +1,7 @@
> // SPDX-License-Identifier: GPL-2.0-only
> /*
> * Copyright (c) 2015, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023. Qualcomm Innovation Center, Inc. All rights reserved
> */
>
> #include <linux/clk.h>
> @@ -163,6 +164,7 @@ struct msm_dsi_host {
>
> struct drm_display_mode *mode;
> struct drm_dsc_config *dsc;
> + struct msm_compression_info comp_info;
>
> /* connected device info */
> unsigned int channel;
> @@ -2600,9 +2602,17 @@ void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host)
> DSI_TEST_PATTERN_GEN_CMD_STREAM0_TRIGGER_SW_TRIGGER);
> }
>
> -struct drm_dsc_config *msm_dsi_host_get_dsc_config(struct mipi_dsi_host *host)
> +struct msm_compression_info *msm_dsi_host_get_dsc_config(struct mipi_dsi_host *host)
> {
> struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
> + struct msm_compression_info *comp_info = NULL;
>
> - return msm_host->dsc;
> + if (msm_host->dsc) {
> + comp_info = &msm_host->comp_info;
> + comp_info->msm_dsc_info.drm_dsc = *msm_host->dsc;
> + comp_info->comp_type = MSM_DISPLAY_COMPRESSION_DSC;
> + comp_info->enabled = true;
> + }
> +
> + return comp_info;
> }
> diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
> index 6a46ed7..eab0901 100644
> --- a/drivers/gpu/drm/msm/msm_drv.h
> +++ b/drivers/gpu/drm/msm/msm_drv.h
> @@ -430,7 +430,7 @@ void msm_dsi_snapshot(struct msm_disp_state *disp_state, struct msm_dsi *msm_dsi
> bool msm_dsi_is_cmd_mode(struct msm_dsi *msm_dsi);
> bool msm_dsi_is_bonded_dsi(struct msm_dsi *msm_dsi);
> bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi);
> -struct drm_dsc_config *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi);
> +struct msm_compression_info *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi);
> #else
> static inline void __init msm_dsi_register(void)
> {
> @@ -460,7 +460,7 @@ static inline bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi)
> return false;
> }
>
> -static inline struct drm_dsc_config *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi)
> +static inline struct msm_compression_info *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi)
> {
> return NULL;
> }
--
With best wishes
Dmitry
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