From patchwork Sun Feb 4 06:59:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrea della Porta X-Patchwork-Id: 13544521 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 4ECE4C4828F for ; Sun, 4 Feb 2024 07:00:59 +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:References:In-Reply-To: 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: List-Owner; bh=AOY0i0uF3dB6PRueBvh1ilOTPoC9A/7qdfml+asL3Do=; b=ijQaZq21GzTay1 jWcXxcmvabKXUfv5AD8vrTAJE4hzScy6wYYJsPRSC1UjKy5GjXegZhNGNfNZ5bsiRysUD5EsFDLLr UVepr3lL90wHKJVuMPBMSWNhnV6Z4Li8a0xG8zMvXzrNmoklT4WObs960MQV9oWMJVN5tsWpyuEQ0 MEVaq/i70/ig7LKoTA6kUcmUPCpau7vP02LeE6quIVPT/QVEeuIa+riQLIqg/TOwJQ7P6FeTRUrXn i4VjbBEbC+Sxcb0RDBgEWfKRwoGPRSmmauld/hM3ZcLUpQO2o8VGfKkpsFXMQ8CUk92upvnf/vxaH K239G8yuPfLyjvnGf5hA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rWWUf-00000000HbA-3K9L; Sun, 04 Feb 2024 07:00:45 +0000 Received: from smtp-out1.suse.de ([2a07:de40:b251:101:10:150:64:1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rWWTw-00000000H0O-0JyY; Sun, 04 Feb 2024 07:00:01 +0000 Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id D959B220B1; Sun, 4 Feb 2024 06:59:53 +0000 (UTC) Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id C12131338E; Sun, 4 Feb 2024 06:59:53 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 2G4SLek1v2WOZwAAD6G6ig (envelope-from ); Sun, 04 Feb 2024 06:59:53 +0000 From: Andrea della Porta To: Vinod Koul , Florian Fainelli , Ray Jui , Scott Branden , Broadcom internal kernel review list , dmaengine@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Maxime Ripard , Dom Cobley , Phil Elwell , Andrea della Porta Subject: [PATCH 10/12] dmaengine: bcm2835: Support DMA-Lite channels Date: Sun, 4 Feb 2024 07:59:38 +0100 Message-ID: X-Mailer: git-send-email 2.41.0 In-Reply-To: References: MIME-Version: 1.0 Authentication-Results: smtp-out1.suse.de; none X-Spamd-Result: default: False [1.30 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; R_MISSING_CHARSET(2.50)[]; MIME_GOOD(-0.10)[text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; REPLY(-4.00)[]; BROKEN_CONTENT_TYPE(1.50)[]; R_RATELIMIT(0.00)[to_ip_from(RLecjp584x17qehbj331hhfqn7)]; RCVD_COUNT_THREE(0.00)[3]; RCPT_COUNT_TWELVE(0.00)[13]; MID_CONTAINS_FROM(1.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:email]; FORGED_SENDER(0.30)[andrea.porta@suse.com,aporta@suse.de]; FUZZY_BLOCKED(0.00)[rspamd.com]; MIME_TRACE(0.00)[0:+]; FREEMAIL_CC(0.00)[cerno.tech,gmail.com,raspberrypi.com,suse.com]; FROM_NEQ_ENVFROM(0.10)[andrea.porta@suse.com,aporta@suse.de]; RCVD_TLS_ALL(0.00)[] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240203_230000_379682_1963485F X-CRM114-Status: GOOD ( 14.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Maxime Ripard The BCM2712 has a DMA-Lite controller that is basically a BCM2835-style DMA controller that supports 40 bits DMA addresses. We need it for HDMI audio to work. Cc: Maxime Ripard Cc: Dom Cobley Signed-off-by: Andrea della Porta --- drivers/dma/bcm2835-dma.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index 548cf7343d83..055c558caa0e 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -100,6 +100,7 @@ struct bcm2835_chan { bool is_lite_channel; bool is_40bit_channel; + bool is_2712; }; struct bcm2835_desc { @@ -545,7 +546,11 @@ static struct bcm2835_desc *bcm2835_dma_create_cb_chain( control_block->info = info; control_block->src = src; control_block->dst = dst; - control_block->stride = 0; + if (c->is_2712) + control_block->stride = (upper_32_bits(dst) << 8) | + upper_32_bits(src); + else + control_block->stride = 0; control_block->next = 0; } @@ -570,7 +575,8 @@ static struct bcm2835_desc *bcm2835_dma_create_cb_chain( d->cb_list[frame - 1].cb)->next_cb = to_bcm2711_cbaddr(cb_entry->paddr); if (frame && !c->is_40bit_channel) - d->cb_list[frame - 1].cb->next = cb_entry->paddr; + d->cb_list[frame - 1].cb->next = c->is_2712 ? + to_bcm2711_cbaddr(cb_entry->paddr) : cb_entry->paddr; /* update src and dst and length */ if (src && (info & BCM2835_DMA_S_INC)) { @@ -750,7 +756,10 @@ static void bcm2835_dma_start_desc(struct bcm2835_chan *c) writel(BCM2711_DMA40_ACTIVE | BCM2711_DMA40_PROT | BCM2711_DMA40_CS_FLAGS(c->dreq), c->chan_base + BCM2711_DMA40_CS); } else { - writel(d->cb_list[0].paddr, c->chan_base + BCM2835_DMA_ADDR); + writel(BIT(31), c->chan_base + BCM2835_DMA_CS); + + writel(c->is_2712 ? to_bcm2711_cbaddr(d->cb_list[0].paddr) : d->cb_list[0].paddr, + c->chan_base + BCM2835_DMA_ADDR); writel(BCM2835_DMA_ACTIVE | BCM2835_DMA_CS_FLAGS(c->dreq), c->chan_base + BCM2835_DMA_CS); } @@ -1119,7 +1128,8 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic( d->cb_list[frames - 1].cb)->next_cb = to_bcm2711_cbaddr(d->cb_list[0].paddr); else - d->cb_list[d->frames - 1].cb->next = d->cb_list[0].paddr; + d->cb_list[d->frames - 1].cb->next = c->is_2712 ? + to_bcm2711_cbaddr(d->cb_list[0].paddr) : d->cb_list[0].paddr; return vchan_tx_prep(&c->vc, &d->vd, flags); } @@ -1186,6 +1196,8 @@ static int bcm2835_dma_chan_init(struct bcm2835_dmadev *d, int chan_id, else if (readl(c->chan_base + BCM2835_DMA_DEBUG) & BCM2835_DMA_DEBUG_LITE) c->is_lite_channel = true; + if (d->cfg_data->dma_mask == DMA_BIT_MASK(40)) + c->is_2712 = true; return 0; }