[PATCH v5 6/8] interconnect: qcom: Add msm8916 interconnect provider driver

[Georgi Djakov]

Add driver for the Qualcomm interconnect buses found in msm8916 based
platforms.

Signed-off-by: Georgi Djakov <georgi.djakov@xxxxxxxxxx>
---
 drivers/interconnect/Kconfig        |   5 +
 drivers/interconnect/Makefile       |   1 +
 drivers/interconnect/qcom/Kconfig   |  11 +
 drivers/interconnect/qcom/Makefile  |   2 +
 drivers/interconnect/qcom/msm8916.c | 495 ++++++++++++++++++++++++++++
 5 files changed, 514 insertions(+)
 create mode 100644 drivers/interconnect/qcom/Kconfig
 create mode 100644 drivers/interconnect/qcom/msm8916.c

diff --git a/drivers/interconnect/Kconfig b/drivers/interconnect/Kconfig
index a261c7d41deb..07a8276fa35a 100644
--- a/drivers/interconnect/Kconfig
+++ b/drivers/interconnect/Kconfig
@@ -8,3 +8,8 @@ menuconfig INTERCONNECT
 
 	  If unsure, say no.
 
+if INTERCONNECT
+
+source "drivers/interconnect/qcom/Kconfig"
+
+endif
diff --git a/drivers/interconnect/Makefile b/drivers/interconnect/Makefile
index 97fca2e09d24..7944cbca0527 100644
--- a/drivers/interconnect/Makefile
+++ b/drivers/interconnect/Makefile
@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_INTERCONNECT)		+= core.o
+obj-$(CONFIG_INTERCONNECT_QCOM)		+= qcom/
diff --git a/drivers/interconnect/qcom/Kconfig b/drivers/interconnect/qcom/Kconfig
new file mode 100644
index 000000000000..86465dc37bd4
--- /dev/null
+++ b/drivers/interconnect/qcom/Kconfig
@@ -0,0 +1,11 @@
+config INTERCONNECT_QCOM
+	bool "Qualcomm Network-on-Chip interconnect drivers"
+	depends on INTERCONNECT
+	depends on ARCH_QCOM || COMPILE_TEST
+	default y
+
+config INTERCONNECT_QCOM_MSM8916
+	tristate "Qualcomm MSM8916 interconnect driver"
+	depends on INTERCONNECT_QCOM
+	help
+	  This is a driver for the Qualcomm Network-on-Chip on msm8916-based platforms.
diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile
index 2a0c41db91c4..e8b24c334c5d 100644
--- a/drivers/interconnect/qcom/Makefile
+++ b/drivers/interconnect/qcom/Makefile
@@ -1,2 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
 obj-y += smd-rpm.o
+
+obj-$(CONFIG_INTERCONNECT_QCOM_MSM8916) += msm8916.o
diff --git a/drivers/interconnect/qcom/msm8916.c b/drivers/interconnect/qcom/msm8916.c
new file mode 100644
index 000000000000..c34f18cdea33
--- /dev/null
+++ b/drivers/interconnect/qcom/msm8916.c
@@ -0,0 +1,495 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 Linaro Ltd
+ * Author: Georgi Djakov <georgi.djakov@xxxxxxxxxx>
+ */
+
+#include <dt-bindings/interconnect/qcom.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/interconnect-provider.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_MASTER_FIELD_BW	0x00007762
+#define RPM_BUS_MASTER_REQ      0x73616d62
+#define RPM_BUS_SLAVE_REQ       0x766c7362
+
+#define to_qcom_provider(_provider) \
+	container_of(_provider, struct qcom_icc_provider, provider)
+
+enum qcom_qos_mode {
+	QCOM_QOS_MODE_BYPASS = 0,
+	QCOM_QOS_MODE_FIXED,
+	QCOM_QOS_MODE_MAX,
+};
+
+struct qcom_icc_provider {
+	struct icc_provider	provider;
+	void __iomem		*base;
+	struct clk		*bus_clk;
+	struct clk		*bus_a_clk;
+};
+
+#define MSM8916_MAX_LINKS	8
+
+/**
+ * struct qcom_icc_node - Qualcomm specific interconnect nodes
+ * @name: the node name used in debugfs
+ * @links: an array of nodes where we can go next while traversing
+ * @id: a unique node identifier
+ * @num_links: the total number of @links
+ * @port: the offset index into the masters QoS register space
+ * @buswidth: width of the interconnect between a node and the bus (bytes)
+ * @ap_owned: the AP CPU does the writing to QoS registers
+ * @rpm: reference to the RPM SMD driver
+ * @qos_mode: QoS mode for ap_owned resources
+ * @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 links[MSM8916_MAX_LINKS];
+	u16 id;
+	u16 num_links;
+	u16 port;
+	u16 buswidth;
+	bool ap_owned;
+	struct qcom_smd_rpm *rpm;
+	enum qcom_qos_mode qos_mode;
+	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, _port, _buswidth, _ap_owned,		\
+			_mas_rpm_id, _slv_rpm_id, _qos_mode,		\
+			_numlinks, ...)					\
+		static struct qcom_icc_node _name = {			\
+		.id = _id,						\
+		.name = #_name,						\
+		.port = _port,						\
+		.buswidth = _buswidth,					\
+		.qos_mode = _qos_mode,					\
+		.ap_owned = _ap_owned,					\
+		.mas_rpm_id = _mas_rpm_id,				\
+		.slv_rpm_id = _slv_rpm_id,				\
+		.num_links = _numlinks,					\
+		.links = { __VA_ARGS__ },				\
+	}
+
+DEFINE_QNODE(mas_video, MASTER_VIDEO_P0, 8, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_0, SNOC_MM_INT_2);
+DEFINE_QNODE(mas_jpeg, MASTER_JPEG, 6, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_0, SNOC_MM_INT_2);
+DEFINE_QNODE(mas_vfe, MASTER_VFE, 9, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_1, SNOC_MM_INT_2);
+DEFINE_QNODE(mas_mdp, MASTER_MDP_PORT0, 7, 16, 1, -1, -1, QCOM_QOS_MODE_BYPASS, 2, SNOC_MM_INT_0, SNOC_MM_INT_2);
+DEFINE_QNODE(mas_qdss_bam, MASTER_QDSS_BAM, 11, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_QDSS_INT);
+DEFINE_QNODE(mas_snoc_cfg, MASTER_SNOC_CFG, 0, 16, 0, 20, -1, QCOM_QOS_MODE_BYPASS, 1, SNOC_QDSS_INT);
+DEFINE_QNODE(mas_qdss_etr, MASTER_QDSS_ETR, 10, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_QDSS_INT);
+DEFINE_QNODE(mm_int_0, SNOC_MM_INT_0, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_MM_INT_BIMC);
+DEFINE_QNODE(mm_int_1, SNOC_MM_INT_1, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_MM_INT_BIMC);
+DEFINE_QNODE(mm_int_2, SNOC_MM_INT_2, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_INT_0);
+DEFINE_QNODE(mm_int_bimc, SNOC_MM_INT_BIMC, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_1_MAS);
+DEFINE_QNODE(snoc_int_0, SNOC_INT_0, 0, 8, 0, 99, 130, QCOM_QOS_MODE_FIXED, 3, SLAVE_QDSS_STM, SLAVE_SYSTEM_IMEM, MNOC_BIMC_MAS);
+DEFINE_QNODE(snoc_int_1, SNOC_INT_1, 0, 8, 0, 100, 131, QCOM_QOS_MODE_FIXED, 3, SYSTEM_SLAVE_FAB_APPS, SLAVE_CATS_128, SLAVE_OCMEM_64);
+DEFINE_QNODE(snoc_int_bimc, SNOC_INT_BIMC, 0, 8, 0, 101, 132, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_0_MAS);
+DEFINE_QNODE(snoc_bimc_0_mas, SNOC_BIMC_0_MAS, 0, 8, 0, 3, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_0_SLV);
+DEFINE_QNODE(snoc_bimc_1_mas, SNOC_BIMC_1_MAS, 0, 16, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SNOC_BIMC_1_SLV);
+DEFINE_QNODE(qdss_int, SNOC_QDSS_INT, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 2, SNOC_INT_0, SNOC_INT_BIMC);
+DEFINE_QNODE(bimc_snoc_slv, BIMC_SNOC_SLV, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 2, SNOC_INT_0, SNOC_INT_1);
+DEFINE_QNODE(snoc_pnoc_mas, MNOC_BIMC_MAS, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, MNOC_BIMC_SLV);
+DEFINE_QNODE(pnoc_snoc_slv, PNOC_SNOC_SLV, 0, 8, 0, -1, 45, QCOM_QOS_MODE_FIXED, 3, SNOC_INT_0, SNOC_INT_BIMC, SNOC_INT_1);
+DEFINE_QNODE(slv_srvc_snoc, SLAVE_SERVICE_SNOC, 0, 8, 0, -1, 29, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_qdss_stm, SLAVE_QDSS_STM, 0, 4, 0, -1, 30, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_imem, SLAVE_SYSTEM_IMEM, 0, 8, 0, -1, 26, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_apss, SYSTEM_SLAVE_FAB_APPS, 0, 4, 0, -1, 20, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_cats_0, SLAVE_CATS_128, 0, 16, 0, -1, 106, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_cats_1, SLAVE_OCMEM_64, 0, 8, 0, -1, 107, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(mas_apss, MASTER_AMPSS_M0, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2);
+DEFINE_QNODE(mas_tcu0, MASTER_TCU_0, 5, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2);
+DEFINE_QNODE(mas_tcu1, MASTER_TCU_1, 6, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2);
+DEFINE_QNODE(mas_gfx, MASTER_GRAPHICS_3D, 2, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_EBI_CH0, BIMC_SNOC_MAS, SLAVE_AMPSS_L2);
+DEFINE_QNODE(bimc_snoc_mas, BIMC_SNOC_MAS, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, BIMC_SNOC_SLV);
+DEFINE_QNODE(snoc_bimc_0_slv, SNOC_BIMC_0_SLV, 0, 8, 0, -1, 24, QCOM_QOS_MODE_FIXED, 1, SLAVE_EBI_CH0);
+DEFINE_QNODE(snoc_bimc_1_slv, SNOC_BIMC_1_SLV, 0, 8, 1, -1, -1, QCOM_QOS_MODE_FIXED, 1, SLAVE_EBI_CH0);
+DEFINE_QNODE(slv_ebi_ch0, SLAVE_EBI_CH0, 0, 8, 0, -1, 0, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_apps_l2, SLAVE_AMPSS_L2, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(snoc_pnoc_slv, MNOC_BIMC_SLV, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_0);
+DEFINE_QNODE(pnoc_int_0, PNOC_INT_0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 8, PNOC_SNOC_MAS, PNOC_SLV_0, PNOC_SLV_1, PNOC_SLV_2, PNOC_SLV_3, PNOC_SLV_4, PNOC_SLV_8, PNOC_SLV_9);
+DEFINE_QNODE(pnoc_int_1, PNOC_INT_1, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_SNOC_MAS);
+DEFINE_QNODE(pnoc_m_0, PNOC_M_0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_0);
+DEFINE_QNODE(pnoc_m_1, PNOC_M_1, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_SNOC_MAS);
+DEFINE_QNODE(pnoc_s_0, PNOC_SLV_0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_CLK_CTL, SLAVE_TLMM, SLAVE_MSM_TCSR, SLAVE_SECURITY, SLAVE_MSS);
+DEFINE_QNODE(pnoc_s_1, PNOC_SLV_1, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_IMEM_CFG, SLAVE_CRYPTO_0_CFG, SLAVE_RPM_MSG_RAM, SLAVE_MSM_PDM, SLAVE_PRNG);
+DEFINE_QNODE(pnoc_s_2, PNOC_SLV_2, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_SPDM, SLAVE_BOOT_ROM, SLAVE_BIMC_CFG, SLAVE_PNOC_CFG, SLAVE_PMIC_ARB);
+DEFINE_QNODE(pnoc_s_3, PNOC_SLV_3, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 5, SLAVE_MPM, SLAVE_IPS_CFG, SLAVE_RBCPR_CFG, SLAVE_QDSS_CFG, SLAVE_DEHR_CFG);
+DEFINE_QNODE(pnoc_s_4, PNOC_SLV_4, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_VENUS_CFG, SLAVE_CAMERA_CFG, SLAVE_DISPLAY_CFG);
+DEFINE_QNODE(pnoc_s_8, PNOC_SLV_8, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_USB_HS, SLAVE_SDCC_1, SLAVE_BLSP_1);
+DEFINE_QNODE(pnoc_s_9, PNOC_SLV_9, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 3, SLAVE_SDCC_4, SLAVE_LPASS, SLAVE_GRAPHICS_3D_CFG);
+DEFINE_QNODE(slv_imem_cfg, SLAVE_IMEM_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_crypto_0_cfg, SLAVE_CRYPTO_0_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_msg_ram, SLAVE_RPM_MSG_RAM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_pdm, SLAVE_MSM_PDM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_prng, SLAVE_PRNG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_clk_ctl, SLAVE_CLK_CTL, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_mss, SLAVE_MSS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_tlmm, SLAVE_TLMM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_tcsr, SLAVE_MSM_TCSR, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_security, SLAVE_SECURITY, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_spdm, SLAVE_SPDM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_pnoc_cfg, SLAVE_PNOC_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_pmic_arb, SLAVE_PMIC_ARB, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_bimc_cfg, SLAVE_BIMC_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_boot_rom, SLAVE_BOOT_ROM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_mpm, SLAVE_MPM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_qdss_cfg, SLAVE_QDSS_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_rbcpr_cfg, SLAVE_RBCPR_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_snoc_cfg, SLAVE_IPS_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_dehr_cfg, SLAVE_DEHR_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_venus_cfg, SLAVE_VENUS_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_display_cfg, SLAVE_DISPLAY_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_camera_cfg, SLAVE_CAMERA_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_usb_hs, SLAVE_USB_HS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_sdcc_1, SLAVE_SDCC_1, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_blsp_1, SLAVE_BLSP_1, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_sdcc_2, SLAVE_SDCC_4, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_gfx_cfg, SLAVE_GRAPHICS_3D_CFG, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(slv_audio, SLAVE_LPASS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 0, 0);
+DEFINE_QNODE(mas_blsp_1, MASTER_BLSP_1, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_1);
+DEFINE_QNODE(mas_spdm, MASTER_SPDM, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_0);
+DEFINE_QNODE(mas_dehr, MASTER_DEHR, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_0);
+DEFINE_QNODE(mas_audio, MASTER_LPASS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_0);
+DEFINE_QNODE(mas_usb_hs, MASTER_USB_HS, 0, 4, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_M_1);
+DEFINE_QNODE(mas_pnoc_crypto_0, MASTER_CRYPTO_CORE0, 0, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_1);
+DEFINE_QNODE(mas_pnoc_sdcc_1, MASTER_SDCC_1, 7, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_1);
+DEFINE_QNODE(mas_pnoc_sdcc_2, MASTER_SDCC_2, 8, 8, 0, -1, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_INT_1);
+DEFINE_QNODE(pnoc_snoc_mas, PNOC_SNOC_MAS, 0, 8, 0, 29, -1, QCOM_QOS_MODE_FIXED, 1, PNOC_SNOC_SLV);
+
+static struct qcom_icc_node *msm8916_snoc_nodes[] = {
+	&mas_video,
+	&mas_jpeg,
+	&mas_vfe,
+	&mas_mdp,
+	&mas_qdss_bam,
+	&mas_snoc_cfg,
+	&mas_qdss_etr,
+	&mm_int_0,
+	&mm_int_1,
+	&mm_int_2,
+	&mm_int_bimc,
+	&snoc_int_0,
+	&snoc_int_1,
+	&snoc_int_bimc,
+	&snoc_bimc_0_mas,
+	&snoc_bimc_1_mas,
+	&qdss_int,
+	&bimc_snoc_slv,
+	&snoc_pnoc_mas,
+	&pnoc_snoc_slv,
+	&slv_srvc_snoc,
+	&slv_qdss_stm,
+	&slv_imem,
+	&slv_apss,
+	&slv_cats_0,
+	&slv_cats_1,
+};
+
+static struct qcom_icc_desc msm8916_snoc = {
+	.nodes = msm8916_snoc_nodes,
+	.num_nodes = ARRAY_SIZE(msm8916_snoc_nodes),
+};
+
+static struct qcom_icc_node *msm8916_bimc_nodes[] = {
+	&mas_apss,
+	&mas_tcu0,
+	&mas_tcu1,
+	&mas_gfx,
+	&bimc_snoc_mas,
+	&snoc_bimc_0_slv,
+	&snoc_bimc_1_slv,
+	&slv_ebi_ch0,
+	&slv_apps_l2,
+};
+
+static struct qcom_icc_desc msm8916_bimc = {
+	.nodes = msm8916_bimc_nodes,
+	.num_nodes = ARRAY_SIZE(msm8916_bimc_nodes),
+};
+
+static struct qcom_icc_node *msm8916_pnoc_nodes[] = {
+	&snoc_pnoc_slv,
+	&pnoc_int_0,
+	&pnoc_int_1,
+	&pnoc_m_0,
+	&pnoc_m_1,
+	&pnoc_s_0,
+	&pnoc_s_1,
+	&pnoc_s_2,
+	&pnoc_s_3,
+	&pnoc_s_4,
+	&pnoc_s_8,
+	&pnoc_s_9,
+	&slv_imem_cfg,
+	&slv_crypto_0_cfg,
+	&slv_msg_ram,
+	&slv_pdm,
+	&slv_prng,
+	&slv_clk_ctl,
+	&slv_mss,
+	&slv_tlmm,
+	&slv_tcsr,
+	&slv_security,
+	&slv_spdm,
+	&slv_pnoc_cfg,
+	&slv_pmic_arb,
+	&slv_bimc_cfg,
+	&slv_boot_rom,
+	&slv_mpm,
+	&slv_qdss_cfg,
+	&slv_rbcpr_cfg,
+	&slv_snoc_cfg,
+	&slv_dehr_cfg,
+	&slv_venus_cfg,
+	&slv_display_cfg,
+	&slv_camera_cfg,
+	&slv_usb_hs,
+	&slv_sdcc_1,
+	&slv_blsp_1,
+	&slv_sdcc_2,
+	&slv_gfx_cfg,
+	&slv_audio,
+	&mas_blsp_1,
+	&mas_spdm,
+	&mas_dehr,
+	&mas_audio,
+	&mas_usb_hs,
+	&mas_pnoc_crypto_0,
+	&mas_pnoc_sdcc_1,
+	&mas_pnoc_sdcc_2,
+	&pnoc_snoc_mas,
+};
+
+static struct qcom_icc_desc msm8916_pnoc = {
+	.nodes = msm8916_pnoc_nodes,
+	.num_nodes = ARRAY_SIZE(msm8916_pnoc_nodes),
+};
+
+static int qcom_icc_init(struct icc_node *node)
+{
+	struct qcom_icc_provider *qp = to_qcom_provider(node->provider);
+	int ret;
+
+	/* TODO: init qos and priority */
+
+	clk_set_rate(qp->bus_clk, INT_MAX);
+	ret = clk_prepare_enable(qp->bus_clk);
+	if (ret)
+		pr_info("%s: error enabling bus clk (%d)\n", __func__, ret);
+	clk_set_rate(qp->bus_a_clk, INT_MAX);
+	ret = clk_prepare_enable(qp->bus_a_clk);
+	if (ret)
+		pr_info("%s: error enabling bus_a clk (%d)\n", __func__, ret);
+
+	return 0;
+}
+
+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,
+			u32 avg, u32 peak)
+{
+	struct qcom_icc_provider *qp;
+	struct qcom_icc_node *qn;
+	struct icc_node *node;
+	struct icc_provider *provider;
+	u64 avg_bw = icc_units_to_bps(avg);
+	u64 peak_bw = icc_units_to_bps(peak);
+	u64 rate = 0;
+	int ret = 0;
+
+	if (!src)
+		node = dst;
+	else
+		node = src;
+
+	qn = node->data;
+	provider = node->provider;
+	qp = to_qcom_provider(node->provider);
+
+	/* set bandwidth */
+	if (qn->ap_owned) {
+		/* TODO: set QoS */
+	} else {
+		/* send 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,
+						    avg_bw);
+		}
+
+		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,
+						    avg_bw);
+		}
+	}
+
+	rate = max(avg_bw, peak_bw);
+
+	do_div(rate, qn->buswidth);
+
+	if (qn->rate != rate) {
+		ret = clk_set_rate(qp->bus_clk, rate);
+		if (ret) {
+			pr_err("set clk rate %lld error %d\n", rate, ret);
+			return ret;
+		}
+
+		ret = clk_set_rate(qp->bus_a_clk, rate);
+		if (ret) {
+			pr_err("set clk rate %lld error %d\n", rate, ret);
+			return ret;
+		}
+
+		qn->rate = rate;
+	}
+
+	return ret;
+}
+
+static int qnoc_probe(struct platform_device *pdev)
+{
+	const struct qcom_icc_desc *desc;
+	struct qcom_icc_node **qnodes;
+	struct qcom_icc_provider *qp;
+	struct resource *res;
+	struct icc_provider *provider;
+	size_t num_nodes, i;
+	int ret;
+
+	/* wait for RPM */
+	if (!qcom_icc_rpm_smd_available())
+		return -EPROBE_DEFER;
+
+	desc = of_device_get_match_data(&pdev->dev);
+	if (!desc)
+		return -EINVAL;
+
+	qnodes = desc->nodes;
+	num_nodes = desc->num_nodes;
+
+	qp = devm_kzalloc(&pdev->dev, sizeof(*qp), GFP_KERNEL);
+	if (!qp)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	qp->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(qp->base))
+		return PTR_ERR(qp->base);
+
+	qp->bus_clk = devm_clk_get(&pdev->dev, "bus_clk");
+	if (IS_ERR(qp->bus_clk))
+		return PTR_ERR(qp->bus_clk);
+
+	qp->bus_a_clk = devm_clk_get(&pdev->dev, "bus_a_clk");
+	if (IS_ERR(qp->bus_a_clk))
+		return PTR_ERR(qp->bus_a_clk);
+
+	provider = &qp->provider;
+	provider->dev = &pdev->dev;
+	provider->set = &qcom_icc_set;
+	provider->aggregate = &qcom_icc_aggregate;
+	INIT_LIST_HEAD(&provider->nodes);
+	provider->data = qp;
+
+	ret = icc_provider_add(provider);
+	if (ret) {
+		dev_err(&pdev->dev, "error adding interconnect provider\n");
+		return ret;
+	}
+
+	for (i = 0; i < num_nodes; i++) {
+		struct icc_node *node;
+		int ret;
+		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(&pdev->dev, "registered node %s\n", node->name);
+
+		ret = qcom_icc_init(node);
+		if (ret)
+			dev_err(&pdev->dev, "%s init error (%d)\n", node->name,
+				ret);
+
+		/* populate links */
+		for (j = 0; j < qnodes[i]->num_links; j++)
+			if (qnodes[i]->links[j])
+				icc_link_create(node, qnodes[i]->links[j]);
+	}
+
+	platform_set_drvdata(pdev, provider);
+
+	return ret;
+err:
+	icc_provider_del(provider);
+	return ret;
+}
+
+static int qnoc_remove(struct platform_device *pdev)
+{
+	struct icc_provider *provider = platform_get_drvdata(pdev);
+
+	icc_provider_del(provider);
+
+	return 0;
+}
+
+static const struct of_device_id qnoc_of_match[] = {
+	{ .compatible = "qcom,msm8916-pnoc", .data = &msm8916_pnoc },
+	{ .compatible = "qcom,msm8916-snoc", .data = &msm8916_snoc },
+	{ .compatible = "qcom,msm8916-bimc", .data = &msm8916_bimc },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, qnoc_of_match);
+
+static struct platform_driver qnoc_driver = {
+	.probe = qnoc_probe,
+	.remove = qnoc_remove,
+	.driver = {
+		.name = "qnoc-msm8916",
+		.of_match_table = qnoc_of_match,
+	},
+};
+module_platform_driver(qnoc_driver);
+MODULE_AUTHOR("Georgi Djakov <georgi.djakov@xxxxxxxxxx>");
+MODULE_DESCRIPTION("Qualcomm msm8916 NoC driver");
+MODULE_LICENSE("GPL v2");