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Thu, 17 Oct 2024 01:21:19 GMT Received: from jesszhan-linux.qualcomm.com (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 16 Oct 2024 18:21:18 -0700 From: Jessica Zhang Date: Wed, 16 Oct 2024 18:21:16 -0700 Subject: [PATCH v3 10/23] drm/msm/dpu: Add dpu_hw_cwb abstraction for CWB block Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20241016-concurrent-wb-v3-10-a33cf9b93835@quicinc.com> References: <20241016-concurrent-wb-v3-0-a33cf9b93835@quicinc.com> In-Reply-To: <20241016-concurrent-wb-v3-0-a33cf9b93835@quicinc.com> To: Rob Clark , Dmitry Baryshkov , , Sean Paul , Marijn Suijten , "David Airlie" , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Simona Vetter , Simona Vetter CC: , , , , , Rob Clark , =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , "Jessica Zhang" X-Mailer: b4 0.15-dev-2a633 X-Developer-Signature: v=1; a=ed25519-sha256; t=1729128075; l=6259; i=quic_jesszhan@quicinc.com; s=20230329; h=from:subject:message-id; bh=MoU58M8T7rcx/IBlMaHdTEckSl87Udq9kFncTSWMw2Y=; b=6odH4UTMWwhrNHC6FIKIOooQNAbtW8VFFQ2rKMCwkMSK23h1TNBj6weMijuL3WBgoWFoxZXGB 8LTcyqV21/lAtdBbQ9jowN8Yht7wiZ+vzpE442AA+rmMiT+LRHwFbTq X-Developer-Key: i=quic_jesszhan@quicinc.com; a=ed25519; pk=gAUCgHZ6wTJOzQa3U0GfeCDH7iZLlqIEPo4rrjfDpWE= X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: Qn05j4N9Hxavl0Bv8NUC0TYvfDmJ5DMo X-Proofpoint-ORIG-GUID: Qn05j4N9Hxavl0Bv8NUC0TYvfDmJ5DMo X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 phishscore=0 mlxscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 clxscore=1015 spamscore=0 suspectscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410170008 The CWB mux has its own registers and set of operations. Add dpu_hw_cwb abstraction to allow driver to configure the CWB mux. Reviewed-by: Dmitry Baryshkov Signed-off-by: Jessica Zhang --- drivers/gpu/drm/msm/Makefile | 1 + drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cwb.c | 73 +++++++++++++++++++++++++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cwb.h | 70 +++++++++++++++++++++++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h | 5 +- 4 files changed, 148 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile index de7cf60d206241ac03d7e744e048cbfd845f6cc9..26bacd93a148288849d5076c73ef4f294ff2c188 100644 --- a/drivers/gpu/drm/msm/Makefile +++ b/drivers/gpu/drm/msm/Makefile @@ -78,6 +78,7 @@ msm-display-$(CONFIG_DRM_MSM_DPU) += \ disp/dpu1/dpu_hw_catalog.o \ disp/dpu1/dpu_hw_cdm.o \ disp/dpu1/dpu_hw_ctl.o \ + disp/dpu1/dpu_hw_cwb.o \ disp/dpu1/dpu_hw_dsc.o \ disp/dpu1/dpu_hw_dsc_1_2.o \ disp/dpu1/dpu_hw_interrupts.o \ diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cwb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cwb.c new file mode 100644 index 0000000000000000000000000000000000000000..5fbf52906ea94847a8eb3fcaa372e582dce2357c --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cwb.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved + */ + +#include +#include "dpu_hw_cwb.h" + +#define CWB_MUX 0x000 +#define CWB_MODE 0x004 + +/* CWB mux block bit definitions */ +#define CWB_MUX_MASK GENMASK(3, 0) +#define CWB_MODE_MASK GENMASK(2, 0) + +static void dpu_hw_cwb_config(struct dpu_hw_cwb *ctx, + struct dpu_hw_cwb_setup_cfg *cwb_cfg) +{ + struct dpu_hw_blk_reg_map *c = &ctx->hw; + int cwb_mux_cfg = 0xF; + enum dpu_pingpong pp; + enum cwb_mode_input input; + + if (!cwb_cfg) + return; + + input = cwb_cfg->input; + pp = cwb_cfg->pp_idx; + + if (input >= INPUT_MODE_MAX) + return; + + /* + * The CWB_MUX register takes the pingpong index for the real-time + * display + */ + if ((pp != PINGPONG_NONE) && (pp < PINGPONG_MAX)) + cwb_mux_cfg = FIELD_PREP(CWB_MUX_MASK, pp - PINGPONG_0); + + input = FIELD_PREP(CWB_MODE_MASK, input); + + DPU_REG_WRITE(c, CWB_MUX, cwb_mux_cfg); + DPU_REG_WRITE(c, CWB_MODE, input); +} + +/** + * dpu_hw_cwb_init() - Initializes the writeback hw driver object with cwb. + * @dev: Corresponding device for devres management + * @cfg: wb_path catalog entry for which driver object is required + * @addr: mapped register io address of MDP + * Return: Error code or allocated dpu_hw_wb context + */ +struct dpu_hw_cwb *dpu_hw_cwb_init(struct drm_device *dev, + const struct dpu_cwb_cfg *cfg, + void __iomem *addr) +{ + struct dpu_hw_cwb *c; + + if (!addr) + return ERR_PTR(-EINVAL); + + c = drmm_kzalloc(dev, sizeof(*c), GFP_KERNEL); + if (!c) + return ERR_PTR(-ENOMEM); + + c->hw.blk_addr = addr + cfg->base; + c->hw.log_mask = DPU_DBG_MASK_CWB; + + c->idx = cfg->id; + c->ops.config_cwb = dpu_hw_cwb_config; + + return c; +} diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cwb.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cwb.h new file mode 100644 index 0000000000000000000000000000000000000000..96b6edf6b2bbf7d270ac08f76af06fcd3c431527 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cwb.h @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved + */ + +#ifndef _DPU_HW_CWB_H +#define _DPU_HW_CWB_H + +#include "dpu_hw_util.h" + +struct dpu_hw_cwb; + +enum cwb_mode_input { + INPUT_MODE_LM_OUT, + INPUT_MODE_DSPP_OUT, + INPUT_MODE_MAX +}; + +/** + * struct dpu_hw_cwb_setup_cfg : Describes configuration for CWB mux + * @pp_idx: Index of the real-time pinpong that the CWB mux will + * feed the CWB mux + * @input: Input tap point + */ +struct dpu_hw_cwb_setup_cfg { + enum dpu_pingpong pp_idx; + enum cwb_mode_input input; +}; + +/** + * + * struct dpu_hw_cwb_ops : Interface to the cwb hw driver functions + * @config_cwb: configure CWB mux + */ +struct dpu_hw_cwb_ops { + void (*config_cwb)(struct dpu_hw_cwb *ctx, + struct dpu_hw_cwb_setup_cfg *cwb_cfg); +}; + +/** + * struct dpu_hw_cwb : CWB mux driver object + * @base: Hardware block base structure + * @hw: Block hardware details + * @idx: CWB index + * @ops: handle to operations possible for this CWB + */ +struct dpu_hw_cwb { + struct dpu_hw_blk base; + struct dpu_hw_blk_reg_map hw; + + enum dpu_cwb idx; + + struct dpu_hw_cwb_ops ops; +}; + +/** + * dpu_hw_cwb - convert base object dpu_hw_base to container + * @hw: Pointer to base hardware block + * return: Pointer to hardware block container + */ +static inline struct dpu_hw_cwb *to_dpu_hw_cwb(struct dpu_hw_blk *hw) +{ + return container_of(hw, struct dpu_hw_cwb, base); +} + +struct dpu_hw_cwb *dpu_hw_cwb_init(struct drm_device *dev, + const struct dpu_cwb_cfg *cfg, + void __iomem *addr); + +#endif /*_DPU_HW_CWB_H */ diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h index c17d2d356f7a01d5ae63d3ebe4838bd55f60e4eb..c43cb55fe1d22123abc49b68d91689c637921527 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h @@ -1,5 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. +/* + * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. */ #ifndef _DPU_HW_MDSS_H @@ -352,6 +354,7 @@ struct dpu_mdss_color { #define DPU_DBG_MASK_DSPP (1 << 10) #define DPU_DBG_MASK_DSC (1 << 11) #define DPU_DBG_MASK_CDM (1 << 12) +#define DPU_DBG_MASK_CWB (1 << 13) /** * struct dpu_hw_tear_check - Struct contains parameters to configure