From patchwork Wed Jul 3 23:32:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dragan Simic X-Patchwork-Id: 13723057 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 ABB5CC2BD09 for ; Wed, 3 Jul 2024 23:32:36 +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=KcJ1GJcpw7z21hoEaNduW88vmRgpNEHVQNk7rU9fStw=; b=v/IJYjD5FXrHkc xKu5G+RL+1qbLtkSM9zCE9K7TRSr9v/ZVabq6a5EIAZXDJlkklr+oADuYbtzLUKvC61oapuNKvXas oi5s/aJgdmZaj6/KXpA1M/THNwyMp97Zc8F3rik7/PuwGjVphWjW9JE/zWLrX9OowdEpi9q3SM6vs wJ+qxkMWNfQ+M07QMcnyqqk8Ym2GPo9Rc0sOw7rLmPYKr5YZyFy04rg+lq6zPCY96JOzo9ugD2mxN BYCAW7qHHyM2I9cjNBzkd7TpX+HwT/d3RPFY9PqqEiUmaZhEszmfKIUvtWwMDHp0LaRnXSIjXhEJU d2XFZfviHexw91iVOUuw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sP9Sf-0000000BjsD-2pSh; Wed, 03 Jul 2024 23:32:29 +0000 Received: from mail.manjaro.org ([2a01:4f8:c0c:51f3::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sP9SR-0000000Bjp4-1DfK; Wed, 03 Jul 2024 23:32:17 +0000 From: Dragan Simic DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=manjaro.org; s=2021; t=1720049533; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=QlysRJGMPVMeOyPkS2J6+X2utP4VEwmmX+EczNyIJjk=; b=FCIW4v3KulXCCrJ17Z/KdG0HmI74JNGt56c6V4NKu8hg7IHzTQp3mAQBJhS4VQLZm2EX2I T4VlSTAP2VT62fyVvfE5EsO6+7vJ1u63ORQ9OkK0O54pC1GsJL3WicmvVf0Jy+RwGN35fe GoVsbiPQlLvi9MNjY7zfPdnDBWTdFPpSP1m5tXBgtMPZ4//8aKWIJpGcmC1GtZ6j9UFtdt Csy1+CXnAlOHR0v9MeNF6qh1kwrSeXpzqS7ALiF+X1v415HS6Fs0zVoKToUjZeQaT1Z5Cc XS39/nf/pLAio6TxwRuQfXKRY9oFCPbG/MboevgWIlfJjT/mi51pui5lWse4CQ== To: linux-rockchip@lists.infradead.org, dri-devel@lists.freedesktop.org Cc: heiko@sntech.de, hjc@rock-chips.com, andy.yan@rock-chips.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] drm/rockchip: cdn-dp: Remove redundant workarounds for firmware loading Date: Thu, 4 Jul 2024 01:32:02 +0200 Message-Id: <9b7a9e9b88ad8c7489ee1b4c70b8751eeb5cf6f9.1720049413.git.dsimic@manjaro.org> MIME-Version: 1.0 Authentication-Results: ORIGINATING; auth=pass smtp.auth=dsimic@manjaro.org smtp.mailfrom=dsimic@manjaro.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240703_163215_818541_BA153935 X-CRM114-Status: GOOD ( 12.52 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org After the additional firmware-related module information was introduced by the commit c0677e41a47f ("drm/rockchip: cdn-dp-core: add MODULE_FIRMWARE macro"), there's no longer need for the firmware-loading workarounds whose sole purpose was to prevent the missing firmware blob in an initial ramdisk from causing driver initialization to fail. Thus, delete the workarounds, which removes a sizable chunk of redundant code. Various utilities used by Linux distributions to generate initial ramdisks need to obey the firmware-related module information, so we can rely on the firmware blob being present in the generated initial ramdisks. Signed-off-by: Dragan Simic --- drivers/gpu/drm/rockchip/cdn-dp-core.c | 53 +++++--------------------- 1 file changed, 10 insertions(+), 43 deletions(-) diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index bd7aa891b839..e1a7c6a1172b 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -44,9 +44,9 @@ static inline struct cdn_dp_device *encoder_to_dp(struct drm_encoder *encoder) #define DPTX_HPD_DEL (2 << 12) #define DPTX_HPD_SEL_MASK (3 << 28) -#define CDN_FW_TIMEOUT_MS (64 * 1000) #define CDN_DPCD_TIMEOUT_MS 5000 #define CDN_DP_FIRMWARE "rockchip/dptx.bin" + MODULE_FIRMWARE(CDN_DP_FIRMWARE); struct cdn_dp_data { @@ -909,61 +909,28 @@ static int cdn_dp_audio_codec_init(struct cdn_dp_device *dp, return PTR_ERR_OR_ZERO(dp->audio_pdev); } -static int cdn_dp_request_firmware(struct cdn_dp_device *dp) -{ - int ret; - unsigned long timeout = jiffies + msecs_to_jiffies(CDN_FW_TIMEOUT_MS); - unsigned long sleep = 1000; - - WARN_ON(!mutex_is_locked(&dp->lock)); - - if (dp->fw_loaded) - return 0; - - /* Drop the lock before getting the firmware to avoid blocking boot */ - mutex_unlock(&dp->lock); - - while (time_before(jiffies, timeout)) { - ret = request_firmware(&dp->fw, CDN_DP_FIRMWARE, dp->dev); - if (ret == -ENOENT) { - msleep(sleep); - sleep *= 2; - continue; - } else if (ret) { - DRM_DEV_ERROR(dp->dev, - "failed to request firmware: %d\n", ret); - goto out; - } - - dp->fw_loaded = true; - ret = 0; - goto out; - } - - DRM_DEV_ERROR(dp->dev, "Timed out trying to load firmware\n"); - ret = -ETIMEDOUT; -out: - mutex_lock(&dp->lock); - return ret; -} - static void cdn_dp_pd_event_work(struct work_struct *work) { struct cdn_dp_device *dp = container_of(work, struct cdn_dp_device, event_work); struct drm_connector *connector = &dp->connector; enum drm_connector_status old_status; - int ret; mutex_lock(&dp->lock); if (dp->suspended) goto out; - ret = cdn_dp_request_firmware(dp); - if (ret) - goto out; + if (!dp->fw_loaded) { + ret = request_firmware(&dp->fw, CDN_DP_FIRMWARE, dp->dev); + if (ret) { + DRM_DEV_ERROR(dp->dev, "Loading firmware failed: %d\n", ret); + goto out; + } + + dp->fw_loaded = true; + } dp->connected = true;