Message-ID: <20190613154743.GJ6792@builder>
Date:   Thu, 13 Jun 2019 08:47:43 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Georgi Djakov <georgi.djakov@...aro.org>
Cc:     robh+dt@...nel.org, agross@...nel.org, vkoul@...nel.org,
        evgreen@...omium.org, daidavid1@...eaurora.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v4 4/5] interconnect: qcom: Add QCS404 interconnect
 provider driver

On Thu 13 Jun 08:13 PDT 2019, Georgi Djakov wrote:

> From: Bjorn Andersson <bjorn.andersson@...aro.org>
> 
> Add driver for the interconnect buses found in Qualcomm QCS404-based
> platforms. The topology consists of three NoCs that are controlled by
> a remote processor. This remote processor collects the aggregated
> bandwidth for each master-slave pairs.
> 

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
> ---
> 
> v4:
> - Select INTERCONNECT_QCOM_SMD_RPM from this driver.
> - Move the DT header to the dt-bindings patch.
> - Move this patch later in the series.
> 
> v3:
> - Convert the #defines into enum. (Bjorn)
> - Move the rpm-smd part into a separate interconnect proxy driver.
> 
> v2:
> - Use the clk_bulk API. (Bjorn)
> - Move the port IDs into the provider file. (Bjorn)
> - Use ARRAY_SIZE in the macro to automagically count the num_links. (Bjorn)
> - Improve code readability. (Bjorn)
> 
> 
>  drivers/interconnect/qcom/Kconfig  |   9 +
>  drivers/interconnect/qcom/Makefile |   2 +
>  drivers/interconnect/qcom/qcs404.c | 539 +++++++++++++++++++++++++++++
>  3 files changed, 550 insertions(+)
>  create mode 100644 drivers/interconnect/qcom/qcs404.c
> 
> diff --git a/drivers/interconnect/qcom/Kconfig b/drivers/interconnect/qcom/Kconfig
> index 03fd67173494..339e8f10d4f3 100644
> --- a/drivers/interconnect/qcom/Kconfig
> +++ b/drivers/interconnect/qcom/Kconfig
> @@ -5,6 +5,15 @@ config INTERCONNECT_QCOM
>  	help
>  	  Support for Qualcomm's Network-on-Chip interconnect hardware.
>  
> +config INTERCONNECT_QCOM_QCS404
> +	tristate "Qualcomm QCS404 interconnect driver"
> +	depends on INTERCONNECT_QCOM
> +	depends on QCOM_SMD_RPM || COMPILE_TEST
> +	select INTERCONNECT_QCOM_SMD_RPM
> +	help
> +	  This is a driver for the Qualcomm Network-on-Chip on qcs404-based
> +	  platforms.
> +
>  config INTERCONNECT_QCOM_SDM845
>  	tristate "Qualcomm SDM845 interconnect driver"
>  	depends on INTERCONNECT_QCOM
> diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile
> index a600cf6cc272..67dafb783dec 100644
> --- a/drivers/interconnect/qcom/Makefile
> +++ b/drivers/interconnect/qcom/Makefile
> @@ -1,7 +1,9 @@
>  # SPDX-License-Identifier: GPL-2.0
>  
> +qnoc-qcs404-objs			:= qcs404.o
>  qnoc-sdm845-objs			:= sdm845.o
>  icc-smd-rpm-objs			:= smd-rpm.o
>  
> +obj-$(CONFIG_INTERCONNECT_QCOM_QCS404) += qnoc-qcs404.o
>  obj-$(CONFIG_INTERCONNECT_QCOM_SDM845) += qnoc-sdm845.o
>  obj-$(CONFIG_INTERCONNECT_QCOM_SMD_RPM) += icc-smd-rpm.o
> diff --git a/drivers/interconnect/qcom/qcs404.c b/drivers/interconnect/qcom/qcs404.c
> new file mode 100644
> index 000000000000..99be0928e2ad
> --- /dev/null
> +++ b/drivers/interconnect/qcom/qcs404.c
> @@ -0,0 +1,539 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2019 Linaro Ltd
> + */
> +
> +#include <dt-bindings/interconnect/qcom,qcs404.h>
> +#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"
> +
> +#define RPM_BUS_MASTER_REQ	0x73616d62
> +#define RPM_BUS_SLAVE_REQ	0x766c7362
> +
> +enum {
> +	QCS404_MASTER_AMPSS_M0 = 1,
> +	QCS404_MASTER_GRAPHICS_3D,
> +	QCS404_MASTER_MDP_PORT0,
> +	QCS404_SNOC_BIMC_1_MAS,
> +	QCS404_MASTER_TCU_0,
> +	QCS404_MASTER_SPDM,
> +	QCS404_MASTER_BLSP_1,
> +	QCS404_MASTER_BLSP_2,
> +	QCS404_MASTER_XM_USB_HS1,
> +	QCS404_MASTER_CRYPTO_CORE0,
> +	QCS404_MASTER_SDCC_1,
> +	QCS404_MASTER_SDCC_2,
> +	QCS404_SNOC_PNOC_MAS,
> +	QCS404_MASTER_QPIC,
> +	QCS404_MASTER_QDSS_BAM,
> +	QCS404_BIMC_SNOC_MAS,
> +	QCS404_PNOC_SNOC_MAS,
> +	QCS404_MASTER_QDSS_ETR,
> +	QCS404_MASTER_EMAC,
> +	QCS404_MASTER_PCIE,
> +	QCS404_MASTER_USB3,
> +	QCS404_PNOC_INT_0,
> +	QCS404_PNOC_INT_2,
> +	QCS404_PNOC_INT_3,
> +	QCS404_PNOC_SLV_0,
> +	QCS404_PNOC_SLV_1,
> +	QCS404_PNOC_SLV_2,
> +	QCS404_PNOC_SLV_3,
> +	QCS404_PNOC_SLV_4,
> +	QCS404_PNOC_SLV_6,
> +	QCS404_PNOC_SLV_7,
> +	QCS404_PNOC_SLV_8,
> +	QCS404_PNOC_SLV_9,
> +	QCS404_PNOC_SLV_10,
> +	QCS404_PNOC_SLV_11,
> +	QCS404_SNOC_QDSS_INT,
> +	QCS404_SNOC_INT_0,
> +	QCS404_SNOC_INT_1,
> +	QCS404_SNOC_INT_2,
> +	QCS404_SLAVE_EBI_CH0,
> +	QCS404_BIMC_SNOC_SLV,
> +	QCS404_SLAVE_SPDM_WRAPPER,
> +	QCS404_SLAVE_PDM,
> +	QCS404_SLAVE_PRNG,
> +	QCS404_SLAVE_TCSR,
> +	QCS404_SLAVE_SNOC_CFG,
> +	QCS404_SLAVE_MESSAGE_RAM,
> +	QCS404_SLAVE_DISPLAY_CFG,
> +	QCS404_SLAVE_GRAPHICS_3D_CFG,
> +	QCS404_SLAVE_BLSP_1,
> +	QCS404_SLAVE_TLMM_NORTH,
> +	QCS404_SLAVE_PCIE_1,
> +	QCS404_SLAVE_EMAC_CFG,
> +	QCS404_SLAVE_BLSP_2,
> +	QCS404_SLAVE_TLMM_EAST,
> +	QCS404_SLAVE_TCU,
> +	QCS404_SLAVE_PMIC_ARB,
> +	QCS404_SLAVE_SDCC_1,
> +	QCS404_SLAVE_SDCC_2,
> +	QCS404_SLAVE_TLMM_SOUTH,
> +	QCS404_SLAVE_USB_HS,
> +	QCS404_SLAVE_USB3,
> +	QCS404_SLAVE_CRYPTO_0_CFG,
> +	QCS404_PNOC_SNOC_SLV,
> +	QCS404_SLAVE_APPSS,
> +	QCS404_SLAVE_WCSS,
> +	QCS404_SNOC_BIMC_1_SLV,
> +	QCS404_SLAVE_OCIMEM,
> +	QCS404_SNOC_PNOC_SLV,
> +	QCS404_SLAVE_QDSS_STM,
> +	QCS404_SLAVE_CATS_128,
> +	QCS404_SLAVE_OCMEM_64,
> +	QCS404_SLAVE_LPASS,
> +};
> +
> +#define to_qcom_provider(_provider) \
> +	container_of(_provider, struct qcom_icc_provider, provider)
> +
> +static const struct clk_bulk_data bus_clocks[] = {
> +	{ .id = "bus_clk" },
> +	{ .id = "bus_a_clk" },
> +};
> +
> +/**
> + * 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;
> +};
> +
> +#define QCS404_MAX_LINKS	12
> +
> +/**
> + * 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[QCS404_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__ },				\
> +	}
> +
> +DEFINE_QNODE(mas_apps_proc, QCS404_MASTER_AMPSS_M0, 8, 0, -1, QCS404_SLAVE_EBI_CH0, QCS404_BIMC_SNOC_SLV);
> +DEFINE_QNODE(mas_oxili, QCS404_MASTER_GRAPHICS_3D, 8, 6, -1, QCS404_SLAVE_EBI_CH0, QCS404_BIMC_SNOC_SLV);
> +DEFINE_QNODE(mas_mdp, QCS404_MASTER_MDP_PORT0, 8, 8, -1, QCS404_SLAVE_EBI_CH0, QCS404_BIMC_SNOC_SLV);
> +DEFINE_QNODE(mas_snoc_bimc_1, QCS404_SNOC_BIMC_1_MAS, 8, 76, -1, QCS404_SLAVE_EBI_CH0);
> +DEFINE_QNODE(mas_tcu_0, QCS404_MASTER_TCU_0, 8, -1, -1, QCS404_SLAVE_EBI_CH0, QCS404_BIMC_SNOC_SLV);
> +DEFINE_QNODE(mas_spdm, QCS404_MASTER_SPDM, 4, -1, -1, QCS404_PNOC_INT_3);
> +DEFINE_QNODE(mas_blsp_1, QCS404_MASTER_BLSP_1, 4, 41, -1, QCS404_PNOC_INT_3);
> +DEFINE_QNODE(mas_blsp_2, QCS404_MASTER_BLSP_2, 4, 39, -1, QCS404_PNOC_INT_3);
> +DEFINE_QNODE(mas_xi_usb_hs1, QCS404_MASTER_XM_USB_HS1, 8, 138, -1, QCS404_PNOC_INT_0);
> +DEFINE_QNODE(mas_crypto, QCS404_MASTER_CRYPTO_CORE0, 8, 23, -1, QCS404_PNOC_SNOC_SLV, QCS404_PNOC_INT_2);
> +DEFINE_QNODE(mas_sdcc_1, QCS404_MASTER_SDCC_1, 8, 33, -1, QCS404_PNOC_INT_0);
> +DEFINE_QNODE(mas_sdcc_2, QCS404_MASTER_SDCC_2, 8, 35, -1, QCS404_PNOC_INT_0);
> +DEFINE_QNODE(mas_snoc_pcnoc, QCS404_SNOC_PNOC_MAS, 8, 77, -1, QCS404_PNOC_INT_2);
> +DEFINE_QNODE(mas_qpic, QCS404_MASTER_QPIC, 4, -1, -1, QCS404_PNOC_INT_0);
> +DEFINE_QNODE(mas_qdss_bam, QCS404_MASTER_QDSS_BAM, 4, -1, -1, QCS404_SNOC_QDSS_INT);
> +DEFINE_QNODE(mas_bimc_snoc, QCS404_BIMC_SNOC_MAS, 8, 21, -1, QCS404_SLAVE_OCMEM_64, QCS404_SLAVE_CATS_128, QCS404_SNOC_INT_0, QCS404_SNOC_INT_1);
> +DEFINE_QNODE(mas_pcnoc_snoc, QCS404_PNOC_SNOC_MAS, 8, 29, -1, QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_2, QCS404_SNOC_INT_0);
> +DEFINE_QNODE(mas_qdss_etr, QCS404_MASTER_QDSS_ETR, 8, -1, -1, QCS404_SNOC_QDSS_INT);
> +DEFINE_QNODE(mas_emac, QCS404_MASTER_EMAC, 8, -1, -1, QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_1);
> +DEFINE_QNODE(mas_pcie, QCS404_MASTER_PCIE, 8, -1, -1, QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_1);
> +DEFINE_QNODE(mas_usb3, QCS404_MASTER_USB3, 8, -1, -1, QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_1);
> +DEFINE_QNODE(pcnoc_int_0, QCS404_PNOC_INT_0, 8, 85, 114, QCS404_PNOC_SNOC_SLV, QCS404_PNOC_INT_2);
> +DEFINE_QNODE(pcnoc_int_2, QCS404_PNOC_INT_2, 8, 124, 184, QCS404_PNOC_SLV_10, QCS404_SLAVE_TCU, QCS404_PNOC_SLV_11, QCS404_PNOC_SLV_2, QCS404_PNOC_SLV_3, QCS404_PNOC_SLV_0, QCS404_PNOC_SLV_1, QCS404_PNOC_SLV_6, QCS404_PNOC_SLV_7, QCS404_PNOC_SLV_4, QCS404_PNOC_SLV_8, QCS404_PNOC_SLV_9);
> +DEFINE_QNODE(pcnoc_int_3, QCS404_PNOC_INT_3, 8, 125, 185, QCS404_PNOC_SNOC_SLV);
> +DEFINE_QNODE(pcnoc_s_0, QCS404_PNOC_SLV_0, 4, 89, 118, QCS404_SLAVE_PRNG, QCS404_SLAVE_SPDM_WRAPPER, QCS404_SLAVE_PDM);
> +DEFINE_QNODE(pcnoc_s_1, QCS404_PNOC_SLV_1, 4, 90, 119, QCS404_SLAVE_TCSR);
> +DEFINE_QNODE(pcnoc_s_2, QCS404_PNOC_SLV_2, 4, -1, -1, QCS404_SLAVE_GRAPHICS_3D_CFG);
> +DEFINE_QNODE(pcnoc_s_3, QCS404_PNOC_SLV_3, 4, 92, 121, QCS404_SLAVE_MESSAGE_RAM);
> +DEFINE_QNODE(pcnoc_s_4, QCS404_PNOC_SLV_4, 4, 93, 122, QCS404_SLAVE_SNOC_CFG);
> +DEFINE_QNODE(pcnoc_s_6, QCS404_PNOC_SLV_6, 4, 94, 123, QCS404_SLAVE_BLSP_1, QCS404_SLAVE_TLMM_NORTH, QCS404_SLAVE_EMAC_CFG);
> +DEFINE_QNODE(pcnoc_s_7, QCS404_PNOC_SLV_7, 4, 95, 124, QCS404_SLAVE_TLMM_SOUTH, QCS404_SLAVE_DISPLAY_CFG, QCS404_SLAVE_SDCC_1, QCS404_SLAVE_PCIE_1, QCS404_SLAVE_SDCC_2);
> +DEFINE_QNODE(pcnoc_s_8, QCS404_PNOC_SLV_8, 4, 96, 125, QCS404_SLAVE_CRYPTO_0_CFG);
> +DEFINE_QNODE(pcnoc_s_9, QCS404_PNOC_SLV_9, 4, 97, 126, QCS404_SLAVE_BLSP_2, QCS404_SLAVE_TLMM_EAST, QCS404_SLAVE_PMIC_ARB);
> +DEFINE_QNODE(pcnoc_s_10, QCS404_PNOC_SLV_10, 4, 157, -1, QCS404_SLAVE_USB_HS);
> +DEFINE_QNODE(pcnoc_s_11, QCS404_PNOC_SLV_11, 4, 158, 246, QCS404_SLAVE_USB3);
> +DEFINE_QNODE(qdss_int, QCS404_SNOC_QDSS_INT, 8, -1, -1, QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_1);
> +DEFINE_QNODE(snoc_int_0, QCS404_SNOC_INT_0, 8, 99, 130, QCS404_SLAVE_LPASS, QCS404_SLAVE_APPSS, QCS404_SLAVE_WCSS);
> +DEFINE_QNODE(snoc_int_1, QCS404_SNOC_INT_1, 8, 100, 131, QCS404_SNOC_PNOC_SLV, QCS404_SNOC_INT_2);
> +DEFINE_QNODE(snoc_int_2, QCS404_SNOC_INT_2, 8, 134, 197, QCS404_SLAVE_QDSS_STM, QCS404_SLAVE_OCIMEM);
> +DEFINE_QNODE(slv_ebi, QCS404_SLAVE_EBI_CH0, 8, -1, 0, 0);
> +DEFINE_QNODE(slv_bimc_snoc, QCS404_BIMC_SNOC_SLV, 8, -1, 2, QCS404_BIMC_SNOC_MAS);
> +DEFINE_QNODE(slv_spdm, QCS404_SLAVE_SPDM_WRAPPER, 4, -1, -1, 0);
> +DEFINE_QNODE(slv_pdm, QCS404_SLAVE_PDM, 4, -1, 41, 0);
> +DEFINE_QNODE(slv_prng, QCS404_SLAVE_PRNG, 4, -1, 44, 0);
> +DEFINE_QNODE(slv_tcsr, QCS404_SLAVE_TCSR, 4, -1, 50, 0);
> +DEFINE_QNODE(slv_snoc_cfg, QCS404_SLAVE_SNOC_CFG, 4, -1, 70, 0);
> +DEFINE_QNODE(slv_message_ram, QCS404_SLAVE_MESSAGE_RAM, 4, -1, 55, 0);
> +DEFINE_QNODE(slv_disp_ss_cfg, QCS404_SLAVE_DISPLAY_CFG, 4, -1, -1, 0);
> +DEFINE_QNODE(slv_gpu_cfg, QCS404_SLAVE_GRAPHICS_3D_CFG, 4, -1, -1, 0);
> +DEFINE_QNODE(slv_blsp_1, QCS404_SLAVE_BLSP_1, 4, -1, 39, 0);
> +DEFINE_QNODE(slv_tlmm_north, QCS404_SLAVE_TLMM_NORTH, 4, -1, 214, 0);
> +DEFINE_QNODE(slv_pcie, QCS404_SLAVE_PCIE_1, 4, -1, -1, 0);
> +DEFINE_QNODE(slv_ethernet, QCS404_SLAVE_EMAC_CFG, 4, -1, -1, 0);
> +DEFINE_QNODE(slv_blsp_2, QCS404_SLAVE_BLSP_2, 4, -1, 37, 0);
> +DEFINE_QNODE(slv_tlmm_east, QCS404_SLAVE_TLMM_EAST, 4, -1, 213, 0);
> +DEFINE_QNODE(slv_tcu, QCS404_SLAVE_TCU, 8, -1, -1, 0);
> +DEFINE_QNODE(slv_pmic_arb, QCS404_SLAVE_PMIC_ARB, 4, -1, 59, 0);
> +DEFINE_QNODE(slv_sdcc_1, QCS404_SLAVE_SDCC_1, 4, -1, 31, 0);
> +DEFINE_QNODE(slv_sdcc_2, QCS404_SLAVE_SDCC_2, 4, -1, 33, 0);
> +DEFINE_QNODE(slv_tlmm_south, QCS404_SLAVE_TLMM_SOUTH, 4, -1, -1, 0);
> +DEFINE_QNODE(slv_usb_hs, QCS404_SLAVE_USB_HS, 4, -1, 40, 0);
> +DEFINE_QNODE(slv_usb3, QCS404_SLAVE_USB3, 4, -1, 22, 0);
> +DEFINE_QNODE(slv_crypto_0_cfg, QCS404_SLAVE_CRYPTO_0_CFG, 4, -1, 52, 0);
> +DEFINE_QNODE(slv_pcnoc_snoc, QCS404_PNOC_SNOC_SLV, 8, -1, 45, QCS404_PNOC_SNOC_MAS);
> +DEFINE_QNODE(slv_kpss_ahb, QCS404_SLAVE_APPSS, 4, -1, -1, 0);
> +DEFINE_QNODE(slv_wcss, QCS404_SLAVE_WCSS, 4, -1, 23, 0);
> +DEFINE_QNODE(slv_snoc_bimc_1, QCS404_SNOC_BIMC_1_SLV, 8, -1, 104, QCS404_SNOC_BIMC_1_MAS);
> +DEFINE_QNODE(slv_imem, QCS404_SLAVE_OCIMEM, 8, -1, 26, 0);
> +DEFINE_QNODE(slv_snoc_pcnoc, QCS404_SNOC_PNOC_SLV, 8, -1, 28, QCS404_SNOC_PNOC_MAS);
> +DEFINE_QNODE(slv_qdss_stm, QCS404_SLAVE_QDSS_STM, 4, -1, 30, 0);
> +DEFINE_QNODE(slv_cats_0, QCS404_SLAVE_CATS_128, 16, -1, -1, 0);
> +DEFINE_QNODE(slv_cats_1, QCS404_SLAVE_OCMEM_64, 8, -1, -1, 0);
> +DEFINE_QNODE(slv_lpass, QCS404_SLAVE_LPASS, 4, -1, -1, 0);
> +
> +static struct qcom_icc_node *qcs404_bimc_nodes[] = {
> +	[MASTER_AMPSS_M0] = &mas_apps_proc,
> +	[MASTER_OXILI] = &mas_oxili,
> +	[MASTER_MDP_PORT0] = &mas_mdp,
> +	[MASTER_SNOC_BIMC_1] = &mas_snoc_bimc_1,
> +	[MASTER_TCU_0] = &mas_tcu_0,
> +	[SLAVE_EBI_CH0] = &slv_ebi,
> +	[SLAVE_BIMC_SNOC] = &slv_bimc_snoc,
> +};
> +
> +static struct qcom_icc_desc qcs404_bimc = {
> +	.nodes = qcs404_bimc_nodes,
> +	.num_nodes = ARRAY_SIZE(qcs404_bimc_nodes),
> +};
> +
> +static struct qcom_icc_node *qcs404_pcnoc_nodes[] = {
> +	[MASTER_SPDM] = &mas_spdm,
> +	[MASTER_BLSP_1] = &mas_blsp_1,
> +	[MASTER_BLSP_2] = &mas_blsp_2,
> +	[MASTER_XI_USB_HS1] = &mas_xi_usb_hs1,
> +	[MASTER_CRYPT0] = &mas_crypto,
> +	[MASTER_SDCC_1] = &mas_sdcc_1,
> +	[MASTER_SDCC_2] = &mas_sdcc_2,
> +	[MASTER_SNOC_PCNOC] = &mas_snoc_pcnoc,
> +	[MASTER_QPIC] = &mas_qpic,
> +	[PCNOC_INT_0] = &pcnoc_int_0,
> +	[PCNOC_INT_2] = &pcnoc_int_2,
> +	[PCNOC_INT_3] = &pcnoc_int_3,
> +	[PCNOC_S_0] = &pcnoc_s_0,
> +	[PCNOC_S_1] = &pcnoc_s_1,
> +	[PCNOC_S_2] = &pcnoc_s_2,
> +	[PCNOC_S_3] = &pcnoc_s_3,
> +	[PCNOC_S_4] = &pcnoc_s_4,
> +	[PCNOC_S_6] = &pcnoc_s_6,
> +	[PCNOC_S_7] = &pcnoc_s_7,
> +	[PCNOC_S_8] = &pcnoc_s_8,
> +	[PCNOC_S_9] = &pcnoc_s_9,
> +	[PCNOC_S_10] = &pcnoc_s_10,
> +	[PCNOC_S_11] = &pcnoc_s_11,
> +	[SLAVE_SPDM] = &slv_spdm,
> +	[SLAVE_PDM] = &slv_pdm,
> +	[SLAVE_PRNG] = &slv_prng,
> +	[SLAVE_TCSR] = &slv_tcsr,
> +	[SLAVE_SNOC_CFG] = &slv_snoc_cfg,
> +	[SLAVE_MESSAGE_RAM] = &slv_message_ram,
> +	[SLAVE_DISP_SS_CFG] = &slv_disp_ss_cfg,
> +	[SLAVE_GPU_CFG] = &slv_gpu_cfg,
> +	[SLAVE_BLSP_1] = &slv_blsp_1,
> +	[SLAVE_BLSP_2] = &slv_blsp_2,
> +	[SLAVE_TLMM_NORTH] = &slv_tlmm_north,
> +	[SLAVE_PCIE] = &slv_pcie,
> +	[SLAVE_ETHERNET] = &slv_ethernet,
> +	[SLAVE_TLMM_EAST] = &slv_tlmm_east,
> +	[SLAVE_TCU] = &slv_tcu,
> +	[SLAVE_PMIC_ARB] = &slv_pmic_arb,
> +	[SLAVE_SDCC_1] = &slv_sdcc_1,
> +	[SLAVE_SDCC_2] = &slv_sdcc_2,
> +	[SLAVE_TLMM_SOUTH] = &slv_tlmm_south,
> +	[SLAVE_USB_HS] = &slv_usb_hs,
> +	[SLAVE_USB3] = &slv_usb3,
> +	[SLAVE_CRYPTO_0_CFG] = &slv_crypto_0_cfg,
> +	[SLAVE_PCNOC_SNOC] = &slv_pcnoc_snoc,
> +};
> +
> +static struct qcom_icc_desc qcs404_pcnoc = {
> +	.nodes = qcs404_pcnoc_nodes,
> +	.num_nodes = ARRAY_SIZE(qcs404_pcnoc_nodes),
> +};
> +
> +static struct qcom_icc_node *qcs404_snoc_nodes[] = {
> +	[MASTER_QDSS_BAM] = &mas_qdss_bam,
> +	[MASTER_BIMC_SNOC] = &mas_bimc_snoc,
> +	[MASTER_PCNOC_SNOC] = &mas_pcnoc_snoc,
> +	[MASTER_QDSS_ETR] = &mas_qdss_etr,
> +	[MASTER_EMAC] = &mas_emac,
> +	[MASTER_PCIE] = &mas_pcie,
> +	[MASTER_USB3] = &mas_usb3,
> +	[QDSS_INT] = &qdss_int,
> +	[SNOC_INT_0] = &snoc_int_0,
> +	[SNOC_INT_1] = &snoc_int_1,
> +	[SNOC_INT_2] = &snoc_int_2,
> +	[SLAVE_KPSS_AHB] = &slv_kpss_ahb,
> +	[SLAVE_WCSS] = &slv_wcss,
> +	[SLAVE_SNOC_BIMC_1] = &slv_snoc_bimc_1,
> +	[SLAVE_IMEM] = &slv_imem,
> +	[SLAVE_SNOC_PCNOC] = &slv_snoc_pcnoc,
> +	[SLAVE_QDSS_STM] = &slv_qdss_stm,
> +	[SLAVE_CATS_0] = &slv_cats_0,
> +	[SLAVE_CATS_1] = &slv_cats_1,
> +	[SLAVE_LPASS] = &slv_lpass,
> +};
> +
> +static struct qcom_icc_desc qcs404_snoc = {
> +	.nodes = qcs404_snoc_nodes,
> +	.num_nodes = ARRAY_SIZE(qcs404_snoc_nodes),
> +};
> +
> +static int qcom_icc_aggregate(struct icc_node *node, u32 avg_bw, u32 peak_bw,
> +			      u32 *agg_avg, u32 *agg_peak)
> +{
> +	*agg_avg += avg_bw;
> +	*agg_peak = max(*agg_peak, peak_bw);
> +
> +	return 0;
> +}
> +
> +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)
> +		qcom_icc_aggregate(n, 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 qnoc_probe(struct platform_device *pdev)
> +{
> +	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_kcalloc(dev, num_nodes, sizeof(*node), GFP_KERNEL);
> +	if (!data)
> +		return -ENOMEM;
> +
> +	qp->bus_clks = devm_kmemdup(dev, bus_clocks, sizeof(bus_clocks),
> +				    GFP_KERNEL);
> +	if (!qp->bus_clks)
> +		return -ENOMEM;
> +
> +	qp->num_clks = ARRAY_SIZE(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 = qcom_icc_set;
> +	provider->aggregate = qcom_icc_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);
> +
> +		dev_dbg(dev, "registered node %s\n", node->name);
> +
> +		/* populate links */
> +		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:
> +	list_for_each_entry(node, &provider->nodes, node_list) {
> +		icc_node_del(node);
> +		icc_node_destroy(node->id);
> +	}
> +	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
> +	icc_provider_del(provider);
> +
> +	return ret;
> +}
> +
> +static int qnoc_remove(struct platform_device *pdev)
> +{
> +	struct qcom_icc_provider *qp = platform_get_drvdata(pdev);
> +	struct icc_provider *provider = &qp->provider;
> +	struct icc_node *n;
> +
> +	list_for_each_entry(n, &provider->nodes, node_list) {
> +		icc_node_del(n);
> +		icc_node_destroy(n->id);
> +	}
> +	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
> +
> +	return icc_provider_del(provider);
> +}
> +
> +static const struct of_device_id qcs404_noc_of_match[] = {
> +	{ .compatible = "qcom,qcs404-bimc", .data = &qcs404_bimc },
> +	{ .compatible = "qcom,qcs404-pcnoc", .data = &qcs404_pcnoc },
> +	{ .compatible = "qcom,qcs404-snoc", .data = &qcs404_snoc },
> +	{ },
> +};
> +MODULE_DEVICE_TABLE(of, qcs404_noc_of_match);
> +
> +static struct platform_driver qcs404_noc_driver = {
> +	.probe = qnoc_probe,
> +	.remove = qnoc_remove,
> +	.driver = {
> +		.name = "qnoc-qcs404",
> +		.of_match_table = qcs404_noc_of_match,
> +	},
> +};
> +module_platform_driver(qcs404_noc_driver);
> +MODULE_DESCRIPTION("Qualcomm QCS404 NoC driver");
> +MODULE_LICENSE("GPL v2");

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