From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 910E41CD1EE; Thu, 21 Nov 2024 11:58:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732190290; cv=none; b=YZob7Uw7nTib3Ix+2AyRpVaEoLUQN6IPrdPNNf3IpXw2mZdLFM+lnrjCqkV9eRKuw3jlqeuT9Ak434Y2JwAhlK6rMwkGabirsIFUuwAPkC/O/AvdOs2oZsUpM77UE7+noar+/UX5aUSRRG4xx4YvDJbk9Iit0zjYumXI4RtRjMc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732190290; c=relaxed/simple; bh=z440+pwaVdLB6iaRYialbWC9O/Ye84qcKAmGEAtf3c0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Fa36MRxMItk88se2A+Ax220kbAxtb+2AeMSUId0B7fenJd0+DWkUOSIhf3TqARf/NPk5Yga34c4gK7ekrZDnuJ3jnU6+fRSEh2v5DY8u0knqz7qgMWZY14DZUdGoF18qJK+vZXWZwKTBOFpBI4UtWkCXtR+7u2NIFoKGitFpmIQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ojzIeINy; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ojzIeINy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99B24C4CECC; Thu, 21 Nov 2024 11:58:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1732190290; bh=z440+pwaVdLB6iaRYialbWC9O/Ye84qcKAmGEAtf3c0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ojzIeINySnzA28a7btVo+FoSMiSFruB4iW7c98l8cn5COd+8z/QVWhLW2UfxspV96 TZdnSAn5JdNzUu8+F2Hn+Vc0lH/sPtUPLnGrO4NCTkvRTYLl8mj7P9r8BToWifXvKT 6PXZJbfneMq+DIRYcxWQISTTfOlSmlJW1WOQPqGIu5vZDLsoejlavvRjgjx0FNBzne QOon7LILx7aJ2lhbGtQSTQgPJ+O8CBJJAqrU7NdQwxD9i2/BidVGN3bltEsfYpyFaq hfsWNh2k+u3+Skz5UxMR3VHkH15S+LhIgdXOdihhnkj0ZEDySAZSh7Y3H1nsXZHGww PcXEJZt6dMM6w== Message-ID: Date: Thu, 21 Nov 2024 12:58:04 +0100 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V5 3/4] interconnect: qcom: Add EPSS L3 support on SA8775P To: Raviteja Laggyshetty , Georgi Djakov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio Cc: Odelu Kukatla , Mike Tipton , Sibi Sankar , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20241121113006.28520-1-quic_rlaggysh@quicinc.com> <20241121113006.28520-4-quic_rlaggysh@quicinc.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 21/11/2024 12:30, Raviteja Laggyshetty wrote: > Add Epoch Subsystem (EPSS) L3 interconnect provider on > SA8775P SoCs with multiple device support. > ... > -DEFINE_QNODE(osm_l3_master, OSM_L3_MASTER_NODE, 16, OSM_L3_SLAVE_NODE); > -DEFINE_QNODE(osm_l3_slave, OSM_L3_SLAVE_NODE, 16); > +DEFINE_QNODE(osm_l3_master, 16, osm_l3_slave); > +DEFINE_QNODE(osm_l3_slave, 16); > > -static const struct qcom_osm_l3_node * const osm_l3_nodes[] = { > +static struct qcom_osm_l3_node * const osm_l3_nodes[] = { > [MASTER_OSM_L3_APPS] = &osm_l3_master, > [SLAVE_OSM_L3] = &osm_l3_slave, > }; > > -DEFINE_QNODE(epss_l3_master, OSM_L3_MASTER_NODE, 32, OSM_L3_SLAVE_NODE); > -DEFINE_QNODE(epss_l3_slave, OSM_L3_SLAVE_NODE, 32); > +DEFINE_QNODE(epss_l3_master, 32, epss_l3_slave); > +DEFINE_QNODE(epss_l3_slave, 32); > > -static const struct qcom_osm_l3_node * const epss_l3_nodes[] = { > +static struct qcom_osm_l3_node * const epss_l3_nodes[] = { I think dropping const makes the code worse, not better. Commit msg does not explain all these changes and I could not figure out the intention (except modifying but that's just obvious). > [MASTER_EPSS_L3_APPS] = &epss_l3_master, > [SLAVE_EPSS_L3_SHARED] = &epss_l3_slave, > }; > @@ -123,6 +125,19 @@ static const struct qcom_osm_l3_desc epss_l3_l3_vote = { > .reg_perf_state = EPSS_REG_L3_VOTE, > }; > > +static u16 get_node_id_by_name(const char *node_name, > + const struct qcom_osm_l3_desc *desc) > +{ > + struct qcom_osm_l3_node *const *nodes = desc->nodes; > + int i; > + > + for (i = 0; i < desc->num_nodes; i++) { > + if (!strcmp(nodes[i]->name, node_name)) > + return nodes[i]->id; > + } > + return 0; > +} > + > static int qcom_osm_l3_set(struct icc_node *src, struct icc_node *dst) > { > struct qcom_osm_l3_icc_provider *qp; > @@ -164,10 +179,11 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) > const struct qcom_osm_l3_desc *desc; > struct icc_onecell_data *data; > struct icc_provider *provider; > - const struct qcom_osm_l3_node * const *qnodes; > + struct qcom_osm_l3_node * const *qnodes; > struct icc_node *node; > size_t num_nodes; > struct clk *clk; > + u64 addr; > int ret; > > clk = clk_get(&pdev->dev, "xo"); > @@ -188,6 +204,10 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) > if (!qp) > return -ENOMEM; > > + ret = of_property_read_reg(pdev->dev.of_node, 0, &addr, NULL); > + if (ret) > + return ret; > + > qp->base = devm_platform_ioremap_resource(pdev, 0); > if (IS_ERR(qp->base)) > return PTR_ERR(qp->base); > @@ -242,8 +262,13 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) > > icc_provider_init(provider); > > + /* Allocate unique id for qnodes */ > + for (i = 0; i < num_nodes; i++) > + qnodes[i]->id = ida_alloc_min(&osm_l3_id, OSM_L3_NODE_ID_START, GFP_KERNEL); > + > for (i = 0; i < num_nodes; i++) { > - size_t j; > + char *node_name; > + size_t j, len; > > node = icc_node_create(qnodes[i]->id); > if (IS_ERR(node)) { > @@ -251,13 +276,29 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) > goto err; > } > > - node->name = qnodes[i]->name; > + /* len = strlen(node->name) + @ + 8 (base-address) + NULL */ > + len = strlen(qnodes[i]->name) + OSM_NODE_NAME_SUFFIX_SIZE; > + node_name = devm_kzalloc(&pdev->dev, len, GFP_KERNEL); > + if (!node_name) { > + ret = -ENOMEM; > + goto err; > + } > + > + snprintf(node_name, len, "%s@%08llx", qnodes[i]->name, addr); > + node->name = node_name; Why the node name becomes dynamic? Best regards, Krzysztof