From patchwork Fri Mar 15 11:34:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kieran Bingham X-Patchwork-Id: 10854591 X-Patchwork-Delegate: kieran@bingham.xyz Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 71CDD13B5 for ; Fri, 15 Mar 2019 11:34:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5AD6728B8A for ; Fri, 15 Mar 2019 11:34:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4F77C28C11; Fri, 15 Mar 2019 11:34:28 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B616128C6D for ; Fri, 15 Mar 2019 11:34:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727390AbfCOLe1 (ORCPT ); Fri, 15 Mar 2019 07:34:27 -0400 Received: from perceval.ideasonboard.com ([213.167.242.64]:49012 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727378AbfCOLe1 (ORCPT ); Fri, 15 Mar 2019 07:34:27 -0400 Received: from localhost.localdomain (cpc89242-aztw30-2-0-cust488.18-1.cable.virginm.net [86.31.129.233]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 65D06998; Fri, 15 Mar 2019 12:34:24 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1552649664; bh=djbLH8v9nmVeaTMz7NyXv3M5tZULCCHQRLtiRn9SAKc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hmlWXr/z4kW4aupu1qcMBzlR+W30515x+noCQ+mQ3BvjAhZsHhPbMWCXrPTx693o1 626GzZl/JY7P/NcxqsbkNzwtvJm8AirQwjlF6O+5xlfemX85VmprkbU8GLwy8PlF6O 2slbQLdtK2gLrLDPuzPsiX29VYdBn/kNw2DQCNLs= From: Kieran Bingham To: linux-renesas-soc@vger.kernel.org, dri-devel@lists.freedesktop.org, Laurent Pinchart Cc: Kieran Bingham Subject: [RFC PATCH 3/5] drm: rcar-du: Create a group state object Date: Fri, 15 Mar 2019 11:34:16 +0000 Message-Id: <20190315113418.24452-4-kieran.bingham+renesas@ideasonboard.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190315113418.24452-1-kieran.bingham+renesas@ideasonboard.com> References: <20190315113418.24452-1-kieran.bingham+renesas@ideasonboard.com> MIME-Version: 1.0 Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Create a new private state object for the DU groups, and move the initialisation of a group object to a new function rcar_du_group_init(). Signed-off-by: Kieran Bingham --- I'll be extending the data that goes into this private structure. Have I got the creation and handling of the private object correct? drivers/gpu/drm/rcar-du/rcar_du_group.c | 81 +++++++++++++++++++++++++ drivers/gpu/drm/rcar-du/rcar_du_group.h | 22 +++++++ drivers/gpu/drm/rcar-du/rcar_du_kms.c | 27 ++------- 3 files changed, 107 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.c b/drivers/gpu/drm/rcar-du/rcar_du_group.c index 9eee47969e77..9c82d666f170 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_group.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_group.c @@ -26,6 +26,10 @@ #include #include +#include +#include +#include + #include "rcar_du_drv.h" #include "rcar_du_group.h" #include "rcar_du_regs.h" @@ -351,3 +355,80 @@ int rcar_du_group_set_routing(struct rcar_du_group *rgrp) return rcar_du_set_dpad0_vsp1_routing(rgrp->dev); } + +static struct drm_private_state * +rcar_du_group_atomic_duplicate_state(struct drm_private_obj *obj) +{ + struct rcar_du_group_state *state; + + if (WARN_ON(!obj->state)) + return NULL; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (state == NULL) + return NULL; + + __drm_atomic_helper_private_obj_duplicate_state(obj, &state->state); + + return &state->state; +} + +static void rcar_du_group_atomic_destroy_state(struct drm_private_obj *obj, + struct drm_private_state *state) +{ + kfree(to_rcar_group_state(state)); +} + +static const struct drm_private_state_funcs rcar_du_group_state_funcs = { + .atomic_duplicate_state = rcar_du_group_atomic_duplicate_state, + .atomic_destroy_state = rcar_du_group_atomic_destroy_state, +}; + +/* + * rcar_du_group_init - Initialise and reset a group object + * + * Return 0 in case of success or a negative error code otherwise. + */ +int rcar_du_group_init(struct rcar_du_device *rcdu, struct rcar_du_group *rgrp, + unsigned int index) +{ + static const unsigned int mmio_offsets[] = { + DU0_REG_OFFSET, DU2_REG_OFFSET + }; + + struct rcar_du_group_state *state; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return -ENOMEM; + + drm_atomic_private_obj_init(rcdu->ddev, &rgrp->private, &state->state, + &rcar_du_group_state_funcs); + + mutex_init(&rgrp->lock); + + rgrp->dev = rcdu; + rgrp->mmio_offset = mmio_offsets[index]; + rgrp->index = index; + /* Extract the channel mask for this group only. */ + rgrp->channels_mask = (rcdu->info->channels_mask >> (2 * index)) + & GENMASK(1, 0); + rgrp->num_crtcs = hweight8(rgrp->channels_mask); + + /* + * If we have more than one CRTC in this group pre-associate + * the low-order planes with CRTC 0 and the high-order planes + * with CRTC 1 to minimize flicker occurring when the + * association is changed. + */ + rgrp->dptsr_planes = rgrp->num_crtcs > 1 + ? (rcdu->info->gen >= 3 ? 0x04 : 0xf0) + : 0; + + return 0; +} + +void rcar_du_group_cleanup(struct rcar_du_group *rgrp) +{ + drm_atomic_private_obj_fini(&rgrp->private); +} diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.h b/drivers/gpu/drm/rcar-du/rcar_du_group.h index 87950c1f6a52..4b812e167987 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_group.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_group.h @@ -12,12 +12,15 @@ #include +#include + #include "rcar_du_plane.h" struct rcar_du_device; /* * struct rcar_du_group - CRTCs and planes group + * @private: The base drm private object * @dev: the DU device * @mmio_offset: registers offset in the device memory map * @index: group index @@ -32,6 +35,8 @@ struct rcar_du_device; * @need_restart: the group needs to be restarted due to a configuration change */ struct rcar_du_group { + struct drm_private_obj private; + struct rcar_du_device *dev; unsigned int mmio_offset; unsigned int index; @@ -49,6 +54,19 @@ struct rcar_du_group { bool need_restart; }; +#define to_rcar_group(s) container_of(s, struct rcar_du_group, private) + +/** + * struct rcar_du_group_state - Driver-specific group state + * @state: base DRM private state + */ +struct rcar_du_group_state { + struct drm_private_state state; +}; + +#define to_rcar_group_state(s) \ + container_of(s, struct rcar_du_group_state, state) + u32 rcar_du_group_read(struct rcar_du_group *rgrp, u32 reg); void rcar_du_group_write(struct rcar_du_group *rgrp, u32 reg, u32 data); @@ -60,4 +78,8 @@ int rcar_du_group_set_routing(struct rcar_du_group *rgrp); int rcar_du_set_dpad0_vsp1_routing(struct rcar_du_device *rcdu); +int rcar_du_group_init(struct rcar_du_device *rcdu, struct rcar_du_group *rgrp, + unsigned int index); +void rcar_du_group_cleanup(struct rcar_du_group *rgrp); + #endif /* __RCAR_DU_GROUP_H__ */ diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index 83cd07a404eb..6066e10e80ff 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -23,6 +23,7 @@ #include "rcar_du_crtc.h" #include "rcar_du_drv.h" #include "rcar_du_encoder.h" +#include "rcar_du_group.h" #include "rcar_du_kms.h" #include "rcar_du_regs.h" #include "rcar_du_vsp.h" @@ -510,10 +511,6 @@ static int rcar_du_vsps_init(struct rcar_du_device *rcdu) int rcar_du_modeset_init(struct rcar_du_device *rcdu) { - static const unsigned int mmio_offsets[] = { - DU0_REG_OFFSET, DU2_REG_OFFSET - }; - struct drm_device *dev = rcdu->ddev; struct drm_encoder *encoder; struct rcar_du_group *rgrp; @@ -560,25 +557,9 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu) /* Initialize the groups. */ for_each_rcdu_group(rcdu, rgrp, i) { - mutex_init(&rgrp->lock); - - rgrp->dev = rcdu; - rgrp->mmio_offset = mmio_offsets[i]; - rgrp->index = i; - /* Extract the channel mask for this group only. */ - rgrp->channels_mask = (rcdu->info->channels_mask >> (2 * i)) - & GENMASK(1, 0); - rgrp->num_crtcs = hweight8(rgrp->channels_mask); - - /* - * If we have more than one CRTCs in this group pre-associate - * the low-order planes with CRTC 0 and the high-order planes - * with CRTC 1 to minimize flicker occurring when the - * association is changed. - */ - rgrp->dptsr_planes = rgrp->num_crtcs > 1 - ? (rcdu->info->gen >= 3 ? 0x04 : 0xf0) - : 0; + ret = rcar_du_group_init(rcdu, rgrp, i); + if (ret < 0) + return ret; if (!rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) { ret = rcar_du_planes_init(rgrp);