[v2,1/5] interconnect: qcom: Consolidate interconnect RPM support

Commit Message

Jun Nie Dec. 4, 2020, 7:53 a.m. UTC

Add RPM based interconnect driver implements the set and aggregate
functionalities that translates bandwidth requests into RPM messages.
These modules provide a common set of functionalities for all
Qualcomm RPM based interconnect providers and should help reduce code
duplication when adding new providers.

Signed-off-by: Jun Nie <[e-mail]>
---
 drivers/interconnect/qcom/Makefile  |   2 +-
 drivers/interconnect/qcom/icc-rpm.c | 191 ++++++++++++++++++++++
 drivers/interconnect/qcom/icc-rpm.h |  73 +++++++++
 drivers/interconnect/qcom/msm8916.c | 241 ++--------------------------
 4 files changed, 275 insertions(+), 232 deletions(-)
 create mode 100644 drivers/interconnect/qcom/icc-rpm.c
 create mode 100644 drivers/interconnect/qcom/icc-rpm.h

Comments

AngeloGioacchino Del Regno Dec. 4, 2020, 6:04 p.m. UTC | #1

Il 04/12/20 08:53, Jun Nie ha scritto:
> Add RPM based interconnect driver implements the set and aggregate
> functionalities that translates bandwidth requests into RPM messages.
> These modules provide a common set of functionalities for all
> Qualcomm RPM based interconnect providers and should help reduce code
> duplication when adding new providers.
> 
> Signed-off-by: Jun Nie <[e-mail]>
Hello!
I agree, the RPM based ICC should be commonized... in any case, I think
that you should rebase your patch series over mine, where I am adding
support for SDM660 and also introducing a mechanism to set QoS, which
can actually be used by most platforms managing the ICC over RPM.

Please, check it out: https://lore.kernel.org/patchwork/patch/1322131/

Thanks,
Angelo

> ---
>   drivers/interconnect/qcom/Makefile  |   2 +-
>   drivers/interconnect/qcom/icc-rpm.c | 191 ++++++++++++++++++++++
>   drivers/interconnect/qcom/icc-rpm.h |  73 +++++++++
>   drivers/interconnect/qcom/msm8916.c | 241 ++--------------------------
>   4 files changed, 275 insertions(+), 232 deletions(-)
>   create mode 100644 drivers/interconnect/qcom/icc-rpm.c
>   create mode 100644 drivers/interconnect/qcom/icc-rpm.h
> 
> diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile
> index cf628f7990cd..916d7bbe55b7 100644
> --- a/drivers/interconnect/qcom/Makefile
> +++ b/drivers/interconnect/qcom/Makefile
> @@ -10,7 +10,7 @@ qnoc-sc7180-objs			:= sc7180.o
>   qnoc-sdm845-objs			:= sdm845.o
>   qnoc-sm8150-objs			:= sm8150.o
>   qnoc-sm8250-objs			:= sm8250.o
> -icc-smd-rpm-objs			:= smd-rpm.o
> +icc-smd-rpm-objs			:= smd-rpm.o icc-rpm.o
>   
>   obj-$(CONFIG_INTERCONNECT_QCOM_BCM_VOTER) += icc-bcm-voter.o
>   obj-$(CONFIG_INTERCONNECT_QCOM_MSM8916) += qnoc-msm8916.o
> diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c
> new file mode 100644
> index 000000000000..cc6095492cbe
> --- /dev/null
> +++ b/drivers/interconnect/qcom/icc-rpm.c
> @@ -0,0 +1,191 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2020 Linaro Ltd
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/device.h>
> +#include <linux/interconnect-provider.h>
> +#include <linux/io.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +
> +#include "smd-rpm.h"
> +#include "icc-rpm.h"
> +
> +static int qcom_icc_set(struct icc_node *src, struct icc_node *dst)
> +{
> +	struct qcom_icc_provider *qp;
> +	struct qcom_icc_node *qn;
> +	struct icc_provider *provider;
> +	struct icc_node *n;
> +	u64 sum_bw;
> +	u64 max_peak_bw;
> +	u64 rate;
> +	u32 agg_avg = 0;
> +	u32 agg_peak = 0;
> +	int ret, i;
> +
> +	qn = src->data;
> +	provider = src->provider;
> +	qp = to_qcom_provider(provider);
> +
> +	list_for_each_entry(n, &provider->nodes, node_list)
> +		provider->aggregate(n, 0, n->avg_bw, n->peak_bw,
> +				    &agg_avg, &agg_peak);
> +
> +	sum_bw = icc_units_to_bps(agg_avg);
> +	max_peak_bw = icc_units_to_bps(agg_peak);
> +
> +	/* send bandwidth request message to the RPM processor */
> +	if (qn->mas_rpm_id != -1) {
> +		ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
> +					    RPM_BUS_MASTER_REQ,
> +					    qn->mas_rpm_id,
> +					    sum_bw);
> +		if (ret) {
> +			pr_err("qcom_icc_rpm_smd_send mas %d error %d\n",
> +			       qn->mas_rpm_id, ret);
> +			return ret;
> +		}
> +	}
> +
> +	if (qn->slv_rpm_id != -1) {
> +		ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
> +					    RPM_BUS_SLAVE_REQ,
> +					    qn->slv_rpm_id,
> +					    sum_bw);
> +		if (ret) {
> +			pr_err("qcom_icc_rpm_smd_send slv error %d\n",
> +			       ret);
> +			return ret;
> +		}
> +	}
> +
> +	rate = max(sum_bw, max_peak_bw);
> +
> +	do_div(rate, qn->buswidth);
> +
> +	if (qn->rate == rate)
> +		return 0;
> +
> +	for (i = 0; i < qp->num_clks; i++) {
> +		ret = clk_set_rate(qp->bus_clks[i].clk, rate);
> +		if (ret) {
> +			pr_err("%s clk_set_rate error: %d\n",
> +			       qp->bus_clks[i].id, ret);
> +			return ret;
> +		}
> +	}
> +
> +	qn->rate = rate;
> +
> +	return 0;
> +}
> +
> +int qnoc_probe(struct platform_device *pdev, size_t cd_size, int cd_num,
> +	       const struct clk_bulk_data *cd)
> +{
> +	struct device *dev = &pdev->dev;
> +	const struct qcom_icc_desc *desc;
> +	struct icc_onecell_data *data;
> +	struct icc_provider *provider;
> +	struct qcom_icc_node **qnodes;
> +	struct qcom_icc_provider *qp;
> +	struct icc_node *node;
> +	size_t num_nodes, i;
> +	int ret;
> +
> +	/* wait for the RPM proxy */
> +	if (!qcom_icc_rpm_smd_available())
> +		return -EPROBE_DEFER;
> +
> +	desc = of_device_get_match_data(dev);
> +	if (!desc)
> +		return -EINVAL;
> +
> +	qnodes = desc->nodes;
> +	num_nodes = desc->num_nodes;
> +
> +	qp = devm_kzalloc(dev, sizeof(*qp), GFP_KERNEL);
> +	if (!qp)
> +		return -ENOMEM;
> +
> +	data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes),
> +			    GFP_KERNEL);
> +	if (!data)
> +		return -ENOMEM;
> +
> +	qp->bus_clks = devm_kmemdup(dev, cd, cd_size,
> +				    GFP_KERNEL);
> +	if (!qp->bus_clks)
> +		return -ENOMEM;
> +
> +	qp->num_clks = cd_num;
> +	ret = devm_clk_bulk_get(dev, qp->num_clks, qp->bus_clks);
> +	if (ret)
> +		return ret;
> +
> +	ret = clk_bulk_prepare_enable(qp->num_clks, qp->bus_clks);
> +	if (ret)
> +		return ret;
> +
> +	provider = &qp->provider;
> +	INIT_LIST_HEAD(&provider->nodes);
> +	provider->dev = dev;
> +	provider->set = qcom_icc_set;
> +	provider->aggregate = icc_std_aggregate;
> +	provider->xlate = of_icc_xlate_onecell;
> +	provider->data = data;
> +
> +	ret = icc_provider_add(provider);
> +	if (ret) {
> +		dev_err(dev, "error adding interconnect provider: %d\n", ret);
> +		clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
> +		return ret;
> +	}
> +
> +	for (i = 0; i < num_nodes; i++) {
> +		size_t j;
> +
> +		node = icc_node_create(qnodes[i]->id);
> +		if (IS_ERR(node)) {
> +			ret = PTR_ERR(node);
> +			goto err;
> +		}
> +
> +		node->name = qnodes[i]->name;
> +		node->data = qnodes[i];
> +		icc_node_add(node, provider);
> +
> +		for (j = 0; j < qnodes[i]->num_links; j++)
> +			icc_link_create(node, qnodes[i]->links[j]);
> +
> +		data->nodes[i] = node;
> +	}
> +	data->num_nodes = num_nodes;
> +
> +	platform_set_drvdata(pdev, qp);
> +
> +	return 0;
> +err:
> +	icc_nodes_remove(provider);
> +	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
> +	icc_provider_del(provider);
> +
> +	return ret;
> +}
> +EXPORT_SYMBOL(qnoc_probe);
> +
> +int qnoc_remove(struct platform_device *pdev)
> +{
> +	struct qcom_icc_provider *qp = platform_get_drvdata(pdev);
> +
> +	icc_nodes_remove(&qp->provider);
> +	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
> +	return icc_provider_del(&qp->provider);
> +}
> +EXPORT_SYMBOL(qnoc_remove);
> diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h
> new file mode 100644
> index 000000000000..79a6f68249c1
> --- /dev/null
> +++ b/drivers/interconnect/qcom/icc-rpm.h
> @@ -0,0 +1,73 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (C) 2020 Linaro Ltd
> + */
> +
> +#ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
> +#define __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
> +
> +#define RPM_BUS_MASTER_REQ	0x73616d62
> +#define RPM_BUS_SLAVE_REQ	0x766c7362
> +
> +#define QCOM_MAX_LINKS 12
> +
> +#define to_qcom_provider(_provider) \
> +	container_of(_provider, struct qcom_icc_provider, provider)
> +
> +/**
> + * struct qcom_icc_provider - Qualcomm specific interconnect provider
> + * @provider: generic interconnect provider
> + * @bus_clks: the clk_bulk_data table of bus clocks
> + * @num_clks: the total number of clk_bulk_data entries
> + */
> +struct qcom_icc_provider {
> +	struct icc_provider provider;
> +	struct clk_bulk_data *bus_clks;
> +	int num_clks;
> +};
> +
> +/**
> + * struct qcom_icc_node - Qualcomm specific interconnect nodes
> + * @name: the node name used in debugfs
> + * @id: a unique node identifier
> + * @links: an array of nodes where we can go next while traversing
> + * @num_links: the total number of @links
> + * @buswidth: width of the interconnect between a node and the bus (bytes)
> + * @mas_rpm_id:	RPM id for devices that are bus masters
> + * @slv_rpm_id:	RPM id for devices that are bus slaves
> + * @rate: current bus clock rate in Hz
> + */
> +struct qcom_icc_node {
> +	unsigned char *name;
> +	u16 id;
> +	u16 links[QCOM_MAX_LINKS];
> +	u16 num_links;
> +	u16 buswidth;
> +	int mas_rpm_id;
> +	int slv_rpm_id;
> +	u64 rate;
> +};
> +
> +struct qcom_icc_desc {
> +	struct qcom_icc_node **nodes;
> +	size_t num_nodes;
> +};
> +
> +#define DEFINE_QNODE(_name, _id, _buswidth, _mas_rpm_id, _slv_rpm_id,	\
> +		     ...)						\
> +		static struct qcom_icc_node _name = {			\
> +		.name = #_name,						\
> +		.id = _id,						\
> +		.buswidth = _buswidth,					\
> +		.mas_rpm_id = _mas_rpm_id,				\
> +		.slv_rpm_id = _slv_rpm_id,				\
> +		.num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })),	\
> +		.links = { __VA_ARGS__ },				\
> +	}
> +
> +
> +int qnoc_probe(struct platform_device *pdev, size_t cd_size, int cd_num,
> +	       const struct clk_bulk_data *cd);
> +int qnoc_remove(struct platform_device *pdev);
> +
> +#endif
> diff --git a/drivers/interconnect/qcom/msm8916.c b/drivers/interconnect/qcom/msm8916.c
> index e8371d40ab8d..fc3689c8947a 100644
> --- a/drivers/interconnect/qcom/msm8916.c
> +++ b/drivers/interconnect/qcom/msm8916.c
> @@ -15,9 +15,7 @@
>   #include <dt-bindings/interconnect/qcom,msm8916.h>
>   
>   #include "smd-rpm.h"
> -
> -#define RPM_BUS_MASTER_REQ      0x73616d62
> -#define RPM_BUS_SLAVE_REQ       0x766c7362
> +#include "icc-rpm.h"
>   
>   enum {
>   	MSM8916_BIMC_SNOC_MAS = 1,
> @@ -107,67 +105,11 @@ enum {
>   	MSM8916_SNOC_PNOC_SLV,
>   };
>   
> -#define to_msm8916_provider(_provider) \
> -	container_of(_provider, struct msm8916_icc_provider, provider)
> -
>   static const struct clk_bulk_data msm8916_bus_clocks[] = {
>   	{ .id = "bus" },
>   	{ .id = "bus_a" },
>   };
>   
> -/**
> - * struct msm8916_icc_provider - Qualcomm specific interconnect provider
> - * @provider: generic interconnect provider
> - * @bus_clks: the clk_bulk_data table of bus clocks
> - * @num_clks: the total number of clk_bulk_data entries
> - */
> -struct msm8916_icc_provider {
> -	struct icc_provider provider;
> -	struct clk_bulk_data *bus_clks;
> -	int num_clks;
> -};
> -
> -#define MSM8916_MAX_LINKS	8
> -
> -/**
> - * struct msm8916_icc_node - Qualcomm specific interconnect nodes
> - * @name: the node name used in debugfs
> - * @id: a unique node identifier
> - * @links: an array of nodes where we can go next while traversing
> - * @num_links: the total number of @links
> - * @buswidth: width of the interconnect between a node and the bus (bytes)
> - * @mas_rpm_id:	RPM ID for devices that are bus masters
> - * @slv_rpm_id:	RPM ID for devices that are bus slaves
> - * @rate: current bus clock rate in Hz
> - */
> -struct msm8916_icc_node {
> -	unsigned char *name;
> -	u16 id;
> -	u16 links[MSM8916_MAX_LINKS];
> -	u16 num_links;
> -	u16 buswidth;
> -	int mas_rpm_id;
> -	int slv_rpm_id;
> -	u64 rate;
> -};
> -
> -struct msm8916_icc_desc {
> -	struct msm8916_icc_node **nodes;
> -	size_t num_nodes;
> -};
> -
> -#define DEFINE_QNODE(_name, _id, _buswidth, _mas_rpm_id, _slv_rpm_id,	\
> -					...)				\
> -		static struct msm8916_icc_node _name = {		\
> -		.name = #_name,						\
> -		.id = _id,						\
> -		.buswidth = _buswidth,					\
> -		.mas_rpm_id = _mas_rpm_id,				\
> -		.slv_rpm_id = _slv_rpm_id,				\
> -		.num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })),	\
> -		.links = { __VA_ARGS__ },				\
> -	}
> -
>   DEFINE_QNODE(bimc_snoc_mas, MSM8916_BIMC_SNOC_MAS, 8, -1, -1, MSM8916_BIMC_SNOC_SLV);
>   DEFINE_QNODE(bimc_snoc_slv, MSM8916_BIMC_SNOC_SLV, 8, -1, -1, MSM8916_SNOC_INT_0, MSM8916_SNOC_INT_1);
>   DEFINE_QNODE(mas_apss, MSM8916_MASTER_AMPSS_M0, 8, -1, -1, MSM8916_SLAVE_EBI_CH0, MSM8916_BIMC_SNOC_MAS, MSM8916_SLAVE_AMPSS_L2);
> @@ -254,7 +196,7 @@ DEFINE_QNODE(snoc_int_bimc, MSM8916_SNOC_INT_BIMC, 8, 101, 132, MSM8916_SNOC_BIM
>   DEFINE_QNODE(snoc_pcnoc_mas, MSM8916_SNOC_PNOC_MAS, 8, -1, -1, MSM8916_SNOC_PNOC_SLV);
>   DEFINE_QNODE(snoc_pcnoc_slv, MSM8916_SNOC_PNOC_SLV, 8, -1, -1, MSM8916_PNOC_INT_0);
>   
> -static struct msm8916_icc_node *msm8916_snoc_nodes[] = {
> +static struct qcom_icc_node *msm8916_snoc_nodes[] = {
>   	[BIMC_SNOC_SLV] = &bimc_snoc_slv,
>   	[MASTER_JPEG] = &mas_jpeg,
>   	[MASTER_MDP_PORT0] = &mas_mdp,
> @@ -283,12 +225,12 @@ static struct msm8916_icc_node *msm8916_snoc_nodes[] = {
>   	[SNOC_QDSS_INT] = &qdss_int,
>   };
>   
> -static struct msm8916_icc_desc msm8916_snoc = {
> +static struct qcom_icc_desc msm8916_snoc = {
>   	.nodes = msm8916_snoc_nodes,
>   	.num_nodes = ARRAY_SIZE(msm8916_snoc_nodes),
>   };
>   
> -static struct msm8916_icc_node *msm8916_bimc_nodes[] = {
> +static struct qcom_icc_node *msm8916_bimc_nodes[] = {
>   	[BIMC_SNOC_MAS] = &bimc_snoc_mas,
>   	[MASTER_AMPSS_M0] = &mas_apss,
>   	[MASTER_GRAPHICS_3D] = &mas_gfx,
> @@ -300,12 +242,12 @@ static struct msm8916_icc_node *msm8916_bimc_nodes[] = {
>   	[SNOC_BIMC_1_SLV] = &snoc_bimc_1_slv,
>   };
>   
> -static struct msm8916_icc_desc msm8916_bimc = {
> +static struct qcom_icc_desc msm8916_bimc = {
>   	.nodes = msm8916_bimc_nodes,
>   	.num_nodes = ARRAY_SIZE(msm8916_bimc_nodes),
>   };
>   
> -static struct msm8916_icc_node *msm8916_pcnoc_nodes[] = {
> +static struct qcom_icc_node *msm8916_pcnoc_nodes[] = {
>   	[MASTER_BLSP_1] = &mas_blsp_1,
>   	[MASTER_DEHR] = &mas_dehr,
>   	[MASTER_LPASS] = &mas_audio,
> @@ -358,178 +300,15 @@ static struct msm8916_icc_node *msm8916_pcnoc_nodes[] = {
>   	[SNOC_PCNOC_SLV] = &snoc_pcnoc_slv,
>   };
>   
> -static struct msm8916_icc_desc msm8916_pcnoc = {
> +static struct qcom_icc_desc msm8916_pcnoc = {
>   	.nodes = msm8916_pcnoc_nodes,
>   	.num_nodes = ARRAY_SIZE(msm8916_pcnoc_nodes),
>   };
>   
> -static int msm8916_icc_set(struct icc_node *src, struct icc_node *dst)
> -{
> -	struct msm8916_icc_provider *qp;
> -	struct msm8916_icc_node *qn;
> -	u64 sum_bw, max_peak_bw, rate;
> -	u32 agg_avg = 0, agg_peak = 0;
> -	struct icc_provider *provider;
> -	struct icc_node *n;
> -	int ret, i;
> -
> -	qn = src->data;
> -	provider = src->provider;
> -	qp = to_msm8916_provider(provider);
> -
> -	list_for_each_entry(n, &provider->nodes, node_list)
> -		provider->aggregate(n, 0, n->avg_bw, n->peak_bw,
> -				    &agg_avg, &agg_peak);
> -
> -	sum_bw = icc_units_to_bps(agg_avg);
> -	max_peak_bw = icc_units_to_bps(agg_peak);
> -
> -	/* send bandwidth request message to the RPM processor */
> -	if (qn->mas_rpm_id != -1) {
> -		ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
> -					    RPM_BUS_MASTER_REQ,
> -					    qn->mas_rpm_id,
> -					    sum_bw);
> -		if (ret) {
> -			pr_err("qcom_icc_rpm_smd_send mas %d error %d\n",
> -			       qn->mas_rpm_id, ret);
> -			return ret;
> -		}
> -	}
> -
> -	if (qn->slv_rpm_id != -1) {
> -		ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
> -					    RPM_BUS_SLAVE_REQ,
> -					    qn->slv_rpm_id,
> -					    sum_bw);
> -		if (ret) {
> -			pr_err("qcom_icc_rpm_smd_send slv error %d\n",
> -			       ret);
> -			return ret;
> -		}
> -	}
> -
> -	rate = max(sum_bw, max_peak_bw);
> -
> -	do_div(rate, qn->buswidth);
> -
> -	if (qn->rate == rate)
> -		return 0;
> -
> -	for (i = 0; i < qp->num_clks; i++) {
> -		ret = clk_set_rate(qp->bus_clks[i].clk, rate);
> -		if (ret) {
> -			pr_err("%s clk_set_rate error: %d\n",
> -			       qp->bus_clks[i].id, ret);
> -			return ret;
> -		}
> -	}
> -
> -	qn->rate = rate;
> -
> -	return 0;
> -}
> -
>   static int msm8916_qnoc_probe(struct platform_device *pdev)
>   {
> -	const struct msm8916_icc_desc *desc;
> -	struct msm8916_icc_node **qnodes;
> -	struct msm8916_icc_provider *qp;
> -	struct device *dev = &pdev->dev;
> -	struct icc_onecell_data *data;
> -	struct icc_provider *provider;
> -	struct icc_node *node;
> -	size_t num_nodes, i;
> -	int ret;
> -
> -	/* wait for the RPM proxy */
> -	if (!qcom_icc_rpm_smd_available())
> -		return -EPROBE_DEFER;
> -
> -	desc = of_device_get_match_data(dev);
> -	if (!desc)
> -		return -EINVAL;
> -
> -	qnodes = desc->nodes;
> -	num_nodes = desc->num_nodes;
> -
> -	qp = devm_kzalloc(dev, sizeof(*qp), GFP_KERNEL);
> -	if (!qp)
> -		return -ENOMEM;
> -
> -	data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes),
> -			    GFP_KERNEL);
> -	if (!data)
> -		return -ENOMEM;
> -
> -	qp->bus_clks = devm_kmemdup(dev, msm8916_bus_clocks,
> -				    sizeof(msm8916_bus_clocks), GFP_KERNEL);
> -	if (!qp->bus_clks)
> -		return -ENOMEM;
> -
> -	qp->num_clks = ARRAY_SIZE(msm8916_bus_clocks);
> -	ret = devm_clk_bulk_get(dev, qp->num_clks, qp->bus_clks);
> -	if (ret)
> -		return ret;
> -
> -	ret = clk_bulk_prepare_enable(qp->num_clks, qp->bus_clks);
> -	if (ret)
> -		return ret;
> -
> -	provider = &qp->provider;
> -	INIT_LIST_HEAD(&provider->nodes);
> -	provider->dev = dev;
> -	provider->set = msm8916_icc_set;
> -	provider->aggregate = icc_std_aggregate;
> -	provider->xlate = of_icc_xlate_onecell;
> -	provider->data = data;
> -
> -	ret = icc_provider_add(provider);
> -	if (ret) {
> -		dev_err(dev, "error adding interconnect provider: %d\n", ret);
> -		clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
> -		return ret;
> -	}
> -
> -	for (i = 0; i < num_nodes; i++) {
> -		size_t j;
> -
> -		node = icc_node_create(qnodes[i]->id);
> -		if (IS_ERR(node)) {
> -			ret = PTR_ERR(node);
> -			goto err;
> -		}
> -
> -		node->name = qnodes[i]->name;
> -		node->data = qnodes[i];
> -		icc_node_add(node, provider);
> -
> -		for (j = 0; j < qnodes[i]->num_links; j++)
> -			icc_link_create(node, qnodes[i]->links[j]);
> -
> -		data->nodes[i] = node;
> -	}
> -	data->num_nodes = num_nodes;
> -
> -	platform_set_drvdata(pdev, qp);
> -
> -	return 0;
> -
> -err:
> -	icc_nodes_remove(provider);
> -	icc_provider_del(provider);
> -	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
> -
> -	return ret;
> -}
> -
> -static int msm8916_qnoc_remove(struct platform_device *pdev)
> -{
> -	struct msm8916_icc_provider *qp = platform_get_drvdata(pdev);
> -
> -	icc_nodes_remove(&qp->provider);
> -	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
> -	return icc_provider_del(&qp->provider);
> +	return qnoc_probe(pdev, sizeof(msm8916_bus_clocks),
> +			  ARRAY_SIZE(msm8916_bus_clocks), msm8916_bus_clocks);
>   }
>   
>   static const struct of_device_id msm8916_noc_of_match[] = {
> @@ -542,7 +321,7 @@ MODULE_DEVICE_TABLE(of, msm8916_noc_of_match);
>   
>   static struct platform_driver msm8916_noc_driver = {
>   	.probe = msm8916_qnoc_probe,
> -	.remove = msm8916_qnoc_remove,
> +	.remove = qnoc_remove,
>   	.driver = {
>   		.name = "qnoc-msm8916",
>   		.of_match_table = msm8916_noc_of_match,
>

Jun Nie Dec. 7, 2020, 1:20 a.m. UTC | #2

AngeloGioacchino Del Regno <[e-mail]>
于2020年12月5日周六 上午2:04写道：
>
> Il 04/12/20 08:53, Jun Nie ha scritto:
> > Add RPM based interconnect driver implements the set and aggregate
> > functionalities that translates bandwidth requests into RPM messages.
> > These modules provide a common set of functionalities for all
> > Qualcomm RPM based interconnect providers and should help reduce code
> > duplication when adding new providers.
> >
> > Signed-off-by: Jun Nie <[e-mail]>
> Hello!
> I agree, the RPM based ICC should be commonized... in any case, I think
> that you should rebase your patch series over mine, where I am adding
> support for SDM660 and also introducing a mechanism to set QoS, which
> can actually be used by most platforms managing the ICC over RPM.
>
> Please, check it out: https://lore.kernel.org/patchwork/patch/1322131/
>
> Thanks,
> Angelo
>

Angelo,

Thanks for your contribution! It looks like a great new feature. But
they are not
ready for other qnoc icc drivers yet. It should not be included in
this commonization
patch set until someone add and test the feature for all qnoc drivers.

Regards,
Jun

Patch

diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile
index cf628f7990cd..916d7bbe55b7 100644
--- a/drivers/interconnect/qcom/Makefile
+++ b/drivers/interconnect/qcom/Makefile
@@ -10,7 +10,7 @@  qnoc-sc7180-objs			:= sc7180.o
 qnoc-sdm845-objs			:= sdm845.o
 qnoc-sm8150-objs			:= sm8150.o
 qnoc-sm8250-objs			:= sm8250.o
-icc-smd-rpm-objs			:= smd-rpm.o
+icc-smd-rpm-objs			:= smd-rpm.o icc-rpm.o
 
 obj-$(CONFIG_INTERCONNECT_QCOM_BCM_VOTER) += icc-bcm-voter.o
 obj-$(CONFIG_INTERCONNECT_QCOM_MSM8916) += qnoc-msm8916.o
diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c
new file mode 100644
index 000000000000..cc6095492cbe
--- /dev/null
+++ b/drivers/interconnect/qcom/icc-rpm.c
@@ -0,0 +1,191 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Linaro Ltd
+ */
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/interconnect-provider.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include "smd-rpm.h"
+#include "icc-rpm.h"
+
+static int qcom_icc_set(struct icc_node *src, struct icc_node *dst)
+{
+	struct qcom_icc_provider *qp;
+	struct qcom_icc_node *qn;
+	struct icc_provider *provider;
+	struct icc_node *n;
+	u64 sum_bw;
+	u64 max_peak_bw;
+	u64 rate;
+	u32 agg_avg = 0;
+	u32 agg_peak = 0;
+	int ret, i;
+
+	qn = src->data;
+	provider = src->provider;
+	qp = to_qcom_provider(provider);
+
+	list_for_each_entry(n, &provider->nodes, node_list)
+		provider->aggregate(n, 0, n->avg_bw, n->peak_bw,
+				    &agg_avg, &agg_peak);
+
+	sum_bw = icc_units_to_bps(agg_avg);
+	max_peak_bw = icc_units_to_bps(agg_peak);
+
+	/* send bandwidth request message to the RPM processor */
+	if (qn->mas_rpm_id != -1) {
+		ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
+					    RPM_BUS_MASTER_REQ,
+					    qn->mas_rpm_id,
+					    sum_bw);
+		if (ret) {
+			pr_err("qcom_icc_rpm_smd_send mas %d error %d\n",
+			       qn->mas_rpm_id, ret);
+			return ret;
+		}
+	}
+
+	if (qn->slv_rpm_id != -1) {
+		ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
+					    RPM_BUS_SLAVE_REQ,
+					    qn->slv_rpm_id,
+					    sum_bw);
+		if (ret) {
+			pr_err("qcom_icc_rpm_smd_send slv error %d\n",
+			       ret);
+			return ret;
+		}
+	}
+
+	rate = max(sum_bw, max_peak_bw);
+
+	do_div(rate, qn->buswidth);
+
+	if (qn->rate == rate)
+		return 0;
+
+	for (i = 0; i < qp->num_clks; i++) {
+		ret = clk_set_rate(qp->bus_clks[i].clk, rate);
+		if (ret) {
+			pr_err("%s clk_set_rate error: %d\n",
+			       qp->bus_clks[i].id, ret);
+			return ret;
+		}
+	}
+
+	qn->rate = rate;
+
+	return 0;
+}
+
+int qnoc_probe(struct platform_device *pdev, size_t cd_size, int cd_num,
+	       const struct clk_bulk_data *cd)
+{
+	struct device *dev = &pdev->dev;
+	const struct qcom_icc_desc *desc;
+	struct icc_onecell_data *data;
+	struct icc_provider *provider;
+	struct qcom_icc_node **qnodes;
+	struct qcom_icc_provider *qp;
+	struct icc_node *node;
+	size_t num_nodes, i;
+	int ret;
+
+	/* wait for the RPM proxy */
+	if (!qcom_icc_rpm_smd_available())
+		return -EPROBE_DEFER;
+
+	desc = of_device_get_match_data(dev);
+	if (!desc)
+		return -EINVAL;
+
+	qnodes = desc->nodes;
+	num_nodes = desc->num_nodes;
+
+	qp = devm_kzalloc(dev, sizeof(*qp), GFP_KERNEL);
+	if (!qp)
+		return -ENOMEM;
+
+	data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes),
+			    GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	qp->bus_clks = devm_kmemdup(dev, cd, cd_size,
+				    GFP_KERNEL);
+	if (!qp->bus_clks)
+		return -ENOMEM;
+
+	qp->num_clks = cd_num;
+	ret = devm_clk_bulk_get(dev, qp->num_clks, qp->bus_clks);
+	if (ret)
+		return ret;
+
+	ret = clk_bulk_prepare_enable(qp->num_clks, qp->bus_clks);
+	if (ret)
+		return ret;
+
+	provider = &qp->provider;
+	INIT_LIST_HEAD(&provider->nodes);
+	provider->dev = dev;
+	provider->set = qcom_icc_set;
+	provider->aggregate = icc_std_aggregate;
+	provider->xlate = of_icc_xlate_onecell;
+	provider->data = data;
+
+	ret = icc_provider_add(provider);
+	if (ret) {
+		dev_err(dev, "error adding interconnect provider: %d\n", ret);
+		clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
+		return ret;
+	}
+
+	for (i = 0; i < num_nodes; i++) {
+		size_t j;
+
+		node = icc_node_create(qnodes[i]->id);
+		if (IS_ERR(node)) {
+			ret = PTR_ERR(node);
+			goto err;
+		}
+
+		node->name = qnodes[i]->name;
+		node->data = qnodes[i];
+		icc_node_add(node, provider);
+
+		for (j = 0; j < qnodes[i]->num_links; j++)
+			icc_link_create(node, qnodes[i]->links[j]);
+
+		data->nodes[i] = node;
+	}
+	data->num_nodes = num_nodes;
+
+	platform_set_drvdata(pdev, qp);
+
+	return 0;
+err:
+	icc_nodes_remove(provider);
+	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
+	icc_provider_del(provider);
+
+	return ret;
+}
+EXPORT_SYMBOL(qnoc_probe);
+
+int qnoc_remove(struct platform_device *pdev)
+{
+	struct qcom_icc_provider *qp = platform_get_drvdata(pdev);
+
+	icc_nodes_remove(&qp->provider);
+	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
+	return icc_provider_del(&qp->provider);
+}
+EXPORT_SYMBOL(qnoc_remove);
diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h
new file mode 100644
index 000000000000..79a6f68249c1
--- /dev/null
+++ b/drivers/interconnect/qcom/icc-rpm.h
@@ -0,0 +1,73 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Linaro Ltd
+ */
+
+#ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
+#define __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
+
+#define RPM_BUS_MASTER_REQ	0x73616d62
+#define RPM_BUS_SLAVE_REQ	0x766c7362
+
+#define QCOM_MAX_LINKS 12
+
+#define to_qcom_provider(_provider) \
+	container_of(_provider, struct qcom_icc_provider, provider)
+
+/**
+ * struct qcom_icc_provider - Qualcomm specific interconnect provider
+ * @provider: generic interconnect provider
+ * @bus_clks: the clk_bulk_data table of bus clocks
+ * @num_clks: the total number of clk_bulk_data entries
+ */
+struct qcom_icc_provider {
+	struct icc_provider provider;
+	struct clk_bulk_data *bus_clks;
+	int num_clks;
+};
+
+/**
+ * struct qcom_icc_node - Qualcomm specific interconnect nodes
+ * @name: the node name used in debugfs
+ * @id: a unique node identifier
+ * @links: an array of nodes where we can go next while traversing
+ * @num_links: the total number of @links
+ * @buswidth: width of the interconnect between a node and the bus (bytes)
+ * @mas_rpm_id:	RPM id for devices that are bus masters
+ * @slv_rpm_id:	RPM id for devices that are bus slaves
+ * @rate: current bus clock rate in Hz
+ */
+struct qcom_icc_node {
+	unsigned char *name;
+	u16 id;
+	u16 links[QCOM_MAX_LINKS];
+	u16 num_links;
+	u16 buswidth;
+	int mas_rpm_id;
+	int slv_rpm_id;
+	u64 rate;
+};
+
+struct qcom_icc_desc {
+	struct qcom_icc_node **nodes;
+	size_t num_nodes;
+};
+
+#define DEFINE_QNODE(_name, _id, _buswidth, _mas_rpm_id, _slv_rpm_id,	\
+		     ...)						\
+		static struct qcom_icc_node _name = {			\
+		.name = #_name,						\
+		.id = _id,						\
+		.buswidth = _buswidth,					\
+		.mas_rpm_id = _mas_rpm_id,				\
+		.slv_rpm_id = _slv_rpm_id,				\
+		.num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })),	\
+		.links = { __VA_ARGS__ },				\
+	}
+
+
+int qnoc_probe(struct platform_device *pdev, size_t cd_size, int cd_num,
+	       const struct clk_bulk_data *cd);
+int qnoc_remove(struct platform_device *pdev);
+
+#endif
diff --git a/drivers/interconnect/qcom/msm8916.c b/drivers/interconnect/qcom/msm8916.c
index e8371d40ab8d..fc3689c8947a 100644
--- a/drivers/interconnect/qcom/msm8916.c
+++ b/drivers/interconnect/qcom/msm8916.c
@@ -15,9 +15,7 @@ 
 #include <dt-bindings/interconnect/qcom,msm8916.h>
 
 #include "smd-rpm.h"
-
-#define RPM_BUS_MASTER_REQ      0x73616d62
-#define RPM_BUS_SLAVE_REQ       0x766c7362
+#include "icc-rpm.h"
 
 enum {
 	MSM8916_BIMC_SNOC_MAS = 1,
@@ -107,67 +105,11 @@  enum {
 	MSM8916_SNOC_PNOC_SLV,
 };
 
-#define to_msm8916_provider(_provider) \
-	container_of(_provider, struct msm8916_icc_provider, provider)
-
 static const struct clk_bulk_data msm8916_bus_clocks[] = {
 	{ .id = "bus" },
 	{ .id = "bus_a" },
 };
 
-/**
- * struct msm8916_icc_provider - Qualcomm specific interconnect provider
- * @provider: generic interconnect provider
- * @bus_clks: the clk_bulk_data table of bus clocks
- * @num_clks: the total number of clk_bulk_data entries
- */
-struct msm8916_icc_provider {
-	struct icc_provider provider;
-	struct clk_bulk_data *bus_clks;
-	int num_clks;
-};
-
-#define MSM8916_MAX_LINKS	8
-
-/**
- * struct msm8916_icc_node - Qualcomm specific interconnect nodes
- * @name: the node name used in debugfs
- * @id: a unique node identifier
- * @links: an array of nodes where we can go next while traversing
- * @num_links: the total number of @links
- * @buswidth: width of the interconnect between a node and the bus (bytes)
- * @mas_rpm_id:	RPM ID for devices that are bus masters
- * @slv_rpm_id:	RPM ID for devices that are bus slaves
- * @rate: current bus clock rate in Hz
- */
-struct msm8916_icc_node {
-	unsigned char *name;
-	u16 id;
-	u16 links[MSM8916_MAX_LINKS];
-	u16 num_links;
-	u16 buswidth;
-	int mas_rpm_id;
-	int slv_rpm_id;
-	u64 rate;
-};
-
-struct msm8916_icc_desc {
-	struct msm8916_icc_node **nodes;
-	size_t num_nodes;
-};
-
-#define DEFINE_QNODE(_name, _id, _buswidth, _mas_rpm_id, _slv_rpm_id,	\
-					...)				\
-		static struct msm8916_icc_node _name = {		\
-		.name = #_name,						\
-		.id = _id,						\
-		.buswidth = _buswidth,					\
-		.mas_rpm_id = _mas_rpm_id,				\
-		.slv_rpm_id = _slv_rpm_id,				\
-		.num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })),	\
-		.links = { __VA_ARGS__ },				\
-	}
-
 DEFINE_QNODE(bimc_snoc_mas, MSM8916_BIMC_SNOC_MAS, 8, -1, -1, MSM8916_BIMC_SNOC_SLV);
 DEFINE_QNODE(bimc_snoc_slv, MSM8916_BIMC_SNOC_SLV, 8, -1, -1, MSM8916_SNOC_INT_0, MSM8916_SNOC_INT_1);
 DEFINE_QNODE(mas_apss, MSM8916_MASTER_AMPSS_M0, 8, -1, -1, MSM8916_SLAVE_EBI_CH0, MSM8916_BIMC_SNOC_MAS, MSM8916_SLAVE_AMPSS_L2);
@@ -254,7 +196,7 @@  DEFINE_QNODE(snoc_int_bimc, MSM8916_SNOC_INT_BIMC, 8, 101, 132, MSM8916_SNOC_BIM
 DEFINE_QNODE(snoc_pcnoc_mas, MSM8916_SNOC_PNOC_MAS, 8, -1, -1, MSM8916_SNOC_PNOC_SLV);
 DEFINE_QNODE(snoc_pcnoc_slv, MSM8916_SNOC_PNOC_SLV, 8, -1, -1, MSM8916_PNOC_INT_0);
 
-static struct msm8916_icc_node *msm8916_snoc_nodes[] = {
+static struct qcom_icc_node *msm8916_snoc_nodes[] = {
 	[BIMC_SNOC_SLV] = &bimc_snoc_slv,
 	[MASTER_JPEG] = &mas_jpeg,
 	[MASTER_MDP_PORT0] = &mas_mdp,
@@ -283,12 +225,12 @@  static struct msm8916_icc_node *msm8916_snoc_nodes[] = {
 	[SNOC_QDSS_INT] = &qdss_int,
 };
 
-static struct msm8916_icc_desc msm8916_snoc = {
+static struct qcom_icc_desc msm8916_snoc = {
 	.nodes = msm8916_snoc_nodes,
 	.num_nodes = ARRAY_SIZE(msm8916_snoc_nodes),
 };
 
-static struct msm8916_icc_node *msm8916_bimc_nodes[] = {
+static struct qcom_icc_node *msm8916_bimc_nodes[] = {
 	[BIMC_SNOC_MAS] = &bimc_snoc_mas,
 	[MASTER_AMPSS_M0] = &mas_apss,
 	[MASTER_GRAPHICS_3D] = &mas_gfx,
@@ -300,12 +242,12 @@  static struct msm8916_icc_node *msm8916_bimc_nodes[] = {
 	[SNOC_BIMC_1_SLV] = &snoc_bimc_1_slv,
 };
 
-static struct msm8916_icc_desc msm8916_bimc = {
+static struct qcom_icc_desc msm8916_bimc = {
 	.nodes = msm8916_bimc_nodes,
 	.num_nodes = ARRAY_SIZE(msm8916_bimc_nodes),
 };
 
-static struct msm8916_icc_node *msm8916_pcnoc_nodes[] = {
+static struct qcom_icc_node *msm8916_pcnoc_nodes[] = {
 	[MASTER_BLSP_1] = &mas_blsp_1,
 	[MASTER_DEHR] = &mas_dehr,
 	[MASTER_LPASS] = &mas_audio,
@@ -358,178 +300,15 @@  static struct msm8916_icc_node *msm8916_pcnoc_nodes[] = {
 	[SNOC_PCNOC_SLV] = &snoc_pcnoc_slv,
 };
 
-static struct msm8916_icc_desc msm8916_pcnoc = {
+static struct qcom_icc_desc msm8916_pcnoc = {
 	.nodes = msm8916_pcnoc_nodes,
 	.num_nodes = ARRAY_SIZE(msm8916_pcnoc_nodes),
 };
 
-static int msm8916_icc_set(struct icc_node *src, struct icc_node *dst)
-{
-	struct msm8916_icc_provider *qp;
-	struct msm8916_icc_node *qn;
-	u64 sum_bw, max_peak_bw, rate;
-	u32 agg_avg = 0, agg_peak = 0;
-	struct icc_provider *provider;
-	struct icc_node *n;
-	int ret, i;
-
-	qn = src->data;
-	provider = src->provider;
-	qp = to_msm8916_provider(provider);
-
-	list_for_each_entry(n, &provider->nodes, node_list)
-		provider->aggregate(n, 0, n->avg_bw, n->peak_bw,
-				    &agg_avg, &agg_peak);
-
-	sum_bw = icc_units_to_bps(agg_avg);
-	max_peak_bw = icc_units_to_bps(agg_peak);
-
-	/* send bandwidth request message to the RPM processor */
-	if (qn->mas_rpm_id != -1) {
-		ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
-					    RPM_BUS_MASTER_REQ,
-					    qn->mas_rpm_id,
-					    sum_bw);
-		if (ret) {
-			pr_err("qcom_icc_rpm_smd_send mas %d error %d\n",
-			       qn->mas_rpm_id, ret);
-			return ret;
-		}
-	}
-
-	if (qn->slv_rpm_id != -1) {
-		ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
-					    RPM_BUS_SLAVE_REQ,
-					    qn->slv_rpm_id,
-					    sum_bw);
-		if (ret) {
-			pr_err("qcom_icc_rpm_smd_send slv error %d\n",
-			       ret);
-			return ret;
-		}
-	}
-
-	rate = max(sum_bw, max_peak_bw);
-
-	do_div(rate, qn->buswidth);
-
-	if (qn->rate == rate)
-		return 0;
-
-	for (i = 0; i < qp->num_clks; i++) {
-		ret = clk_set_rate(qp->bus_clks[i].clk, rate);
-		if (ret) {
-			pr_err("%s clk_set_rate error: %d\n",
-			       qp->bus_clks[i].id, ret);
-			return ret;
-		}
-	}
-
-	qn->rate = rate;
-
-	return 0;
-}
-
 static int msm8916_qnoc_probe(struct platform_device *pdev)
 {
-	const struct msm8916_icc_desc *desc;
-	struct msm8916_icc_node **qnodes;
-	struct msm8916_icc_provider *qp;
-	struct device *dev = &pdev->dev;
-	struct icc_onecell_data *data;
-	struct icc_provider *provider;
-	struct icc_node *node;
-	size_t num_nodes, i;
-	int ret;
-
-	/* wait for the RPM proxy */
-	if (!qcom_icc_rpm_smd_available())
-		return -EPROBE_DEFER;
-
-	desc = of_device_get_match_data(dev);
-	if (!desc)
-		return -EINVAL;
-
-	qnodes = desc->nodes;
-	num_nodes = desc->num_nodes;
-
-	qp = devm_kzalloc(dev, sizeof(*qp), GFP_KERNEL);
-	if (!qp)
-		return -ENOMEM;
-
-	data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes),
-			    GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	qp->bus_clks = devm_kmemdup(dev, msm8916_bus_clocks,
-				    sizeof(msm8916_bus_clocks), GFP_KERNEL);
-	if (!qp->bus_clks)
-		return -ENOMEM;
-
-	qp->num_clks = ARRAY_SIZE(msm8916_bus_clocks);
-	ret = devm_clk_bulk_get(dev, qp->num_clks, qp->bus_clks);
-	if (ret)
-		return ret;
-
-	ret = clk_bulk_prepare_enable(qp->num_clks, qp->bus_clks);
-	if (ret)
-		return ret;
-
-	provider = &qp->provider;
-	INIT_LIST_HEAD(&provider->nodes);
-	provider->dev = dev;
-	provider->set = msm8916_icc_set;
-	provider->aggregate = icc_std_aggregate;
-	provider->xlate = of_icc_xlate_onecell;
-	provider->data = data;
-
-	ret = icc_provider_add(provider);
-	if (ret) {
-		dev_err(dev, "error adding interconnect provider: %d\n", ret);
-		clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
-		return ret;
-	}
-
-	for (i = 0; i < num_nodes; i++) {
-		size_t j;
-
-		node = icc_node_create(qnodes[i]->id);
-		if (IS_ERR(node)) {
-			ret = PTR_ERR(node);
-			goto err;
-		}
-
-		node->name = qnodes[i]->name;
-		node->data = qnodes[i];
-		icc_node_add(node, provider);
-
-		for (j = 0; j < qnodes[i]->num_links; j++)
-			icc_link_create(node, qnodes[i]->links[j]);
-
-		data->nodes[i] = node;
-	}
-	data->num_nodes = num_nodes;
-
-	platform_set_drvdata(pdev, qp);
-
-	return 0;
-
-err:
-	icc_nodes_remove(provider);
-	icc_provider_del(provider);
-	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
-
-	return ret;
-}
-
-static int msm8916_qnoc_remove(struct platform_device *pdev)
-{
-	struct msm8916_icc_provider *qp = platform_get_drvdata(pdev);
-
-	icc_nodes_remove(&qp->provider);
-	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
-	return icc_provider_del(&qp->provider);
+	return qnoc_probe(pdev, sizeof(msm8916_bus_clocks),
+			  ARRAY_SIZE(msm8916_bus_clocks), msm8916_bus_clocks);
 }
 
 static const struct of_device_id msm8916_noc_of_match[] = {
@@ -542,7 +321,7 @@  MODULE_DEVICE_TABLE(of, msm8916_noc_of_match);
 
 static struct platform_driver msm8916_noc_driver = {
 	.probe = msm8916_qnoc_probe,
-	.remove = msm8916_qnoc_remove,
+	.remove = qnoc_remove,
 	.driver = {
 		.name = "qnoc-msm8916",
 		.of_match_table = msm8916_noc_of_match,