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-rw-r--r--drivers/interconnect/Kconfig1
-rw-r--r--drivers/interconnect/Makefile1
-rw-r--r--drivers/interconnect/core.c4
-rw-r--r--drivers/interconnect/qcom/bcm-voter.c15
-rw-r--r--drivers/interconnect/qcom/icc-rpmh.c7
-rw-r--r--drivers/interconnect/qcom/msm8916.c12
-rw-r--r--drivers/interconnect/qcom/msm8974.c12
-rw-r--r--drivers/interconnect/qcom/qcs404.c4
-rw-r--r--drivers/interconnect/qcom/sc7180.c6
-rw-r--r--drivers/interconnect/qcom/sdm845.c11
-rw-r--r--drivers/interconnect/qcom/sm8150.c7
-rw-r--r--drivers/interconnect/qcom/sm8250.c7
-rw-r--r--drivers/interconnect/samsung/Kconfig13
-rw-r--r--drivers/interconnect/samsung/Makefile4
-rw-r--r--drivers/interconnect/samsung/exynos.c199
15 files changed, 270 insertions, 33 deletions
diff --git a/drivers/interconnect/Kconfig b/drivers/interconnect/Kconfig
index 5b7204ee2eb2..d637a89d4695 100644
--- a/drivers/interconnect/Kconfig
+++ b/drivers/interconnect/Kconfig
@@ -13,5 +13,6 @@ if INTERCONNECT
source "drivers/interconnect/imx/Kconfig"
source "drivers/interconnect/qcom/Kconfig"
+source "drivers/interconnect/samsung/Kconfig"
endif
diff --git a/drivers/interconnect/Makefile b/drivers/interconnect/Makefile
index d203520b0a56..97d393fd638d 100644
--- a/drivers/interconnect/Makefile
+++ b/drivers/interconnect/Makefile
@@ -6,3 +6,4 @@ icc-core-objs := core.o bulk.o
obj-$(CONFIG_INTERCONNECT) += icc-core.o
obj-$(CONFIG_INTERCONNECT_IMX) += imx/
obj-$(CONFIG_INTERCONNECT_QCOM) += qcom/
+obj-$(CONFIG_INTERCONNECT_SAMSUNG) += samsung/
diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
index eea47b4c84aa..5ad519c9f239 100644
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -971,6 +971,9 @@ void icc_node_add(struct icc_node *node, struct icc_provider *provider)
}
node->avg_bw = node->init_avg;
node->peak_bw = node->init_peak;
+ if (provider->aggregate)
+ provider->aggregate(node, 0, node->init_avg, node->init_peak,
+ &node->avg_bw, &node->peak_bw);
provider->set(node, node);
node->avg_bw = 0;
node->peak_bw = 0;
@@ -1080,7 +1083,6 @@ static int of_count_icc_providers(struct device_node *np)
count++;
count += of_count_icc_providers(child);
}
- of_node_put(np);
return count;
}
diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c
index 887d13721e52..1cc565bce2f4 100644
--- a/drivers/interconnect/qcom/bcm-voter.c
+++ b/drivers/interconnect/qcom/bcm-voter.c
@@ -41,17 +41,10 @@ struct bcm_voter {
static int cmp_vcd(void *priv, struct list_head *a, struct list_head *b)
{
- const struct qcom_icc_bcm *bcm_a =
- list_entry(a, struct qcom_icc_bcm, list);
- const struct qcom_icc_bcm *bcm_b =
- list_entry(b, struct qcom_icc_bcm, list);
-
- if (bcm_a->aux_data.vcd < bcm_b->aux_data.vcd)
- return -1;
- else if (bcm_a->aux_data.vcd == bcm_b->aux_data.vcd)
- return 0;
- else
- return 1;
+ const struct qcom_icc_bcm *bcm_a = list_entry(a, struct qcom_icc_bcm, list);
+ const struct qcom_icc_bcm *bcm_b = list_entry(b, struct qcom_icc_bcm, list);
+
+ return bcm_a->aux_data.vcd - bcm_b->aux_data.vcd;
}
static u64 bcm_div(u64 num, u32 base)
diff --git a/drivers/interconnect/qcom/icc-rpmh.c b/drivers/interconnect/qcom/icc-rpmh.c
index cf10a4b9611b..bf01d09dba6c 100644
--- a/drivers/interconnect/qcom/icc-rpmh.c
+++ b/drivers/interconnect/qcom/icc-rpmh.c
@@ -79,6 +79,7 @@ EXPORT_SYMBOL_GPL(qcom_icc_aggregate);
int qcom_icc_set(struct icc_node *src, struct icc_node *dst)
{
struct qcom_icc_provider *qp;
+ struct qcom_icc_node *qn;
struct icc_node *node;
if (!src)
@@ -87,6 +88,12 @@ int qcom_icc_set(struct icc_node *src, struct icc_node *dst)
node = src;
qp = to_qcom_provider(node->provider);
+ qn = node->data;
+
+ qn->sum_avg[QCOM_ICC_BUCKET_AMC] = max_t(u64, qn->sum_avg[QCOM_ICC_BUCKET_AMC],
+ node->avg_bw);
+ qn->max_peak[QCOM_ICC_BUCKET_AMC] = max_t(u64, qn->max_peak[QCOM_ICC_BUCKET_AMC],
+ node->peak_bw);
qcom_icc_bcm_voter_commit(qp->voter);
diff --git a/drivers/interconnect/qcom/msm8916.c b/drivers/interconnect/qcom/msm8916.c
index 42c6c5581662..e8371d40ab8d 100644
--- a/drivers/interconnect/qcom/msm8916.c
+++ b/drivers/interconnect/qcom/msm8916.c
@@ -182,7 +182,7 @@ DEFINE_QNODE(mas_pcnoc_sdcc_1, MSM8916_MASTER_SDCC_1, 8, -1, -1, MSM8916_PNOC_IN
DEFINE_QNODE(mas_pcnoc_sdcc_2, MSM8916_MASTER_SDCC_2, 8, -1, -1, MSM8916_PNOC_INT_1);
DEFINE_QNODE(mas_qdss_bam, MSM8916_MASTER_QDSS_BAM, 8, -1, -1, MSM8916_SNOC_QDSS_INT);
DEFINE_QNODE(mas_qdss_etr, MSM8916_MASTER_QDSS_ETR, 8, -1, -1, MSM8916_SNOC_QDSS_INT);
-DEFINE_QNODE(mas_snoc_cfg, MSM8916_MASTER_SNOC_CFG, 4, 20, -1, MSM8916_SNOC_QDSS_INT);
+DEFINE_QNODE(mas_snoc_cfg, MSM8916_MASTER_SNOC_CFG, 4, -1, -1, MSM8916_SNOC_QDSS_INT);
DEFINE_QNODE(mas_spdm, MSM8916_MASTER_SPDM, 4, -1, -1, MSM8916_PNOC_MAS_0);
DEFINE_QNODE(mas_tcu0, MSM8916_MASTER_TCU0, 8, -1, -1, MSM8916_SLAVE_EBI_CH0, MSM8916_BIMC_SNOC_MAS, MSM8916_SLAVE_AMPSS_L2);
DEFINE_QNODE(mas_tcu1, MSM8916_MASTER_TCU1, 8, -1, -1, MSM8916_SLAVE_EBI_CH0, MSM8916_BIMC_SNOC_MAS, MSM8916_SLAVE_AMPSS_L2);
@@ -208,14 +208,14 @@ DEFINE_QNODE(pcnoc_snoc_mas, MSM8916_PNOC_SNOC_MAS, 8, 29, -1, MSM8916_PNOC_SNOC
DEFINE_QNODE(pcnoc_snoc_slv, MSM8916_PNOC_SNOC_SLV, 8, -1, 45, MSM8916_SNOC_INT_0, MSM8916_SNOC_INT_BIMC, MSM8916_SNOC_INT_1);
DEFINE_QNODE(qdss_int, MSM8916_SNOC_QDSS_INT, 8, -1, -1, MSM8916_SNOC_INT_0, MSM8916_SNOC_INT_BIMC);
DEFINE_QNODE(slv_apps_l2, MSM8916_SLAVE_AMPSS_L2, 8, -1, -1, 0);
-DEFINE_QNODE(slv_apss, MSM8916_SLAVE_APSS, 4, -1, 20, 0);
+DEFINE_QNODE(slv_apss, MSM8916_SLAVE_APSS, 4, -1, -1, 0);
DEFINE_QNODE(slv_audio, MSM8916_SLAVE_LPASS, 4, -1, -1, 0);
DEFINE_QNODE(slv_bimc_cfg, MSM8916_SLAVE_BIMC_CFG, 4, -1, -1, 0);
DEFINE_QNODE(slv_blsp_1, MSM8916_SLAVE_BLSP_1, 4, -1, -1, 0);
DEFINE_QNODE(slv_boot_rom, MSM8916_SLAVE_BOOT_ROM, 4, -1, -1, 0);
DEFINE_QNODE(slv_camera_cfg, MSM8916_SLAVE_CAMERA_CFG, 4, -1, -1, 0);
-DEFINE_QNODE(slv_cats_0, MSM8916_SLAVE_CATS_128, 16, -1, 106, 0);
-DEFINE_QNODE(slv_cats_1, MSM8916_SLAVE_OCMEM_64, 8, -1, 107, 0);
+DEFINE_QNODE(slv_cats_0, MSM8916_SLAVE_CATS_128, 16, -1, -1, 0);
+DEFINE_QNODE(slv_cats_1, MSM8916_SLAVE_OCMEM_64, 8, -1, -1, 0);
DEFINE_QNODE(slv_clk_ctl, MSM8916_SLAVE_CLK_CTL, 4, -1, -1, 0);
DEFINE_QNODE(slv_crypto_0_cfg, MSM8916_SLAVE_CRYPTO_0_CFG, 4, -1, -1, 0);
DEFINE_QNODE(slv_dehr_cfg, MSM8916_SLAVE_DEHR_CFG, 4, -1, -1, 0);
@@ -239,7 +239,7 @@ DEFINE_QNODE(slv_sdcc_2, MSM8916_SLAVE_SDCC_2, 4, -1, -1, 0);
DEFINE_QNODE(slv_security, MSM8916_SLAVE_SECURITY, 4, -1, -1, 0);
DEFINE_QNODE(slv_snoc_cfg, MSM8916_SLAVE_SNOC_CFG, 4, -1, -1, 0);
DEFINE_QNODE(slv_spdm, MSM8916_SLAVE_SPDM, 4, -1, -1, 0);
-DEFINE_QNODE(slv_srvc_snoc, MSM8916_SLAVE_SRVC_SNOC, 8, -1, 29, 0);
+DEFINE_QNODE(slv_srvc_snoc, MSM8916_SLAVE_SRVC_SNOC, 8, -1, -1, 0);
DEFINE_QNODE(slv_tcsr, MSM8916_SLAVE_TCSR, 4, -1, -1, 0);
DEFINE_QNODE(slv_tlmm, MSM8916_SLAVE_TLMM, 4, -1, -1, 0);
DEFINE_QNODE(slv_usb_hs, MSM8916_SLAVE_USB_HS, 4, -1, -1, 0);
@@ -249,7 +249,7 @@ DEFINE_QNODE(snoc_bimc_0_slv, MSM8916_SNOC_BIMC_0_SLV, 8, -1, 24, MSM8916_SLAVE_
DEFINE_QNODE(snoc_bimc_1_mas, MSM8916_SNOC_BIMC_1_MAS, 16, -1, -1, MSM8916_SNOC_BIMC_1_SLV);
DEFINE_QNODE(snoc_bimc_1_slv, MSM8916_SNOC_BIMC_1_SLV, 8, -1, -1, MSM8916_SLAVE_EBI_CH0);
DEFINE_QNODE(snoc_int_0, MSM8916_SNOC_INT_0, 8, 99, 130, MSM8916_SLAVE_QDSS_STM, MSM8916_SLAVE_IMEM, MSM8916_SNOC_PNOC_MAS);
-DEFINE_QNODE(snoc_int_1, MSM8916_SNOC_INT_1, 8, 100, 131, MSM8916_SLAVE_APSS, MSM8916_SLAVE_CATS_128, MSM8916_SLAVE_OCMEM_64);
+DEFINE_QNODE(snoc_int_1, MSM8916_SNOC_INT_1, 8, -1, -1, MSM8916_SLAVE_APSS, MSM8916_SLAVE_CATS_128, MSM8916_SLAVE_OCMEM_64);
DEFINE_QNODE(snoc_int_bimc, MSM8916_SNOC_INT_BIMC, 8, 101, 132, MSM8916_SNOC_BIMC_0_MAS);
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);
diff --git a/drivers/interconnect/qcom/msm8974.c b/drivers/interconnect/qcom/msm8974.c
index 3a313e11e73d..da68ce375a89 100644
--- a/drivers/interconnect/qcom/msm8974.c
+++ b/drivers/interconnect/qcom/msm8974.c
@@ -618,6 +618,8 @@ static int msm8974_icc_set(struct icc_node *src, struct icc_node *dst)
do_div(rate, src_qn->buswidth);
+ rate = min_t(u32, rate, INT_MAX);
+
if (src_qn->rate == rate)
return 0;
@@ -635,6 +637,14 @@ static int msm8974_icc_set(struct icc_node *src, struct icc_node *dst)
return 0;
}
+static int msm8974_get_bw(struct icc_node *node, u32 *avg, u32 *peak)
+{
+ *avg = 0;
+ *peak = 0;
+
+ return 0;
+}
+
static int msm8974_icc_probe(struct platform_device *pdev)
{
const struct msm8974_icc_desc *desc;
@@ -688,6 +698,7 @@ static int msm8974_icc_probe(struct platform_device *pdev)
provider->aggregate = icc_std_aggregate;
provider->xlate = of_icc_xlate_onecell;
provider->data = data;
+ provider->get_bw = msm8974_get_bw;
ret = icc_provider_add(provider);
if (ret) {
@@ -758,6 +769,7 @@ static struct platform_driver msm8974_noc_driver = {
.driver = {
.name = "qnoc-msm8974",
.of_match_table = msm8974_noc_of_match,
+ .sync_state = icc_sync_state,
},
};
module_platform_driver(msm8974_noc_driver);
diff --git a/drivers/interconnect/qcom/qcs404.c b/drivers/interconnect/qcom/qcs404.c
index d4769a5ea182..9820709b43db 100644
--- a/drivers/interconnect/qcom/qcs404.c
+++ b/drivers/interconnect/qcom/qcs404.c
@@ -157,8 +157,8 @@ struct qcom_icc_desc {
}
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_oxili, QCS404_MASTER_GRAPHICS_3D, 8, -1, -1, QCS404_SLAVE_EBI_CH0, QCS404_BIMC_SNOC_SLV);
+DEFINE_QNODE(mas_mdp, QCS404_MASTER_MDP_PORT0, 8, -1, -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);
diff --git a/drivers/interconnect/qcom/sc7180.c b/drivers/interconnect/qcom/sc7180.c
index bf11b82ed55c..8d9044ed18ab 100644
--- a/drivers/interconnect/qcom/sc7180.c
+++ b/drivers/interconnect/qcom/sc7180.c
@@ -553,6 +553,9 @@ static int qnoc_probe(struct platform_device *pdev)
return ret;
}
+ for (i = 0; i < qp->num_bcms; i++)
+ qcom_icc_bcm_init(qp->bcms[i], &pdev->dev);
+
for (i = 0; i < num_nodes; i++) {
size_t j;
@@ -576,9 +579,6 @@ static int qnoc_probe(struct platform_device *pdev)
}
data->num_nodes = num_nodes;
- for (i = 0; i < qp->num_bcms; i++)
- qcom_icc_bcm_init(qp->bcms[i], &pdev->dev);
-
platform_set_drvdata(pdev, qp);
return 0;
diff --git a/drivers/interconnect/qcom/sdm845.c b/drivers/interconnect/qcom/sdm845.c
index d79e3163e2c3..366870150cbd 100644
--- a/drivers/interconnect/qcom/sdm845.c
+++ b/drivers/interconnect/qcom/sdm845.c
@@ -151,7 +151,7 @@ DEFINE_QBCM(bcm_mc0, "MC0", true, &ebi);
DEFINE_QBCM(bcm_sh0, "SH0", true, &qns_llcc);
DEFINE_QBCM(bcm_mm0, "MM0", false, &qns_mem_noc_hf);
DEFINE_QBCM(bcm_sh1, "SH1", false, &qns_apps_io);
-DEFINE_QBCM(bcm_mm1, "MM1", false, &qxm_camnoc_hf0_uncomp, &qxm_camnoc_hf1_uncomp, &qxm_camnoc_sf_uncomp, &qxm_camnoc_hf0, &qxm_camnoc_hf1, &qxm_mdp0, &qxm_mdp1);
+DEFINE_QBCM(bcm_mm1, "MM1", true, &qxm_camnoc_hf0_uncomp, &qxm_camnoc_hf1_uncomp, &qxm_camnoc_sf_uncomp, &qxm_camnoc_hf0, &qxm_camnoc_hf1, &qxm_mdp0, &qxm_mdp1);
DEFINE_QBCM(bcm_sh2, "SH2", false, &qns_memnoc_snoc);
DEFINE_QBCM(bcm_mm2, "MM2", false, &qns2_mem_noc);
DEFINE_QBCM(bcm_sh3, "SH3", false, &acm_tcu);
@@ -177,6 +177,7 @@ DEFINE_QBCM(bcm_sn15, "SN15", false, &qnm_memnoc);
static struct qcom_icc_bcm *aggre1_noc_bcms[] = {
&bcm_sn9,
+ &bcm_qup0,
};
static struct qcom_icc_node *aggre1_noc_nodes[] = {
@@ -190,6 +191,7 @@ static struct qcom_icc_node *aggre1_noc_nodes[] = {
[SLAVE_A1NOC_SNOC] = &qns_a1noc_snoc,
[SLAVE_SERVICE_A1NOC] = &srvc_aggre1_noc,
[SLAVE_ANOC_PCIE_A1NOC_SNOC] = &qns_pcie_a1noc_snoc,
+ [MASTER_QUP_1] = &qhm_qup1,
};
static const struct qcom_icc_desc sdm845_aggre1_noc = {
@@ -218,6 +220,7 @@ static struct qcom_icc_node *aggre2_noc_nodes[] = {
[SLAVE_A2NOC_SNOC] = &qns_a2noc_snoc,
[SLAVE_ANOC_PCIE_SNOC] = &qns_pcie_snoc,
[SLAVE_SERVICE_A2NOC] = &srvc_aggre2_noc,
+ [MASTER_QUP_2] = &qhm_qup2,
};
static const struct qcom_icc_desc sdm845_aggre2_noc = {
@@ -489,6 +492,9 @@ static int qnoc_probe(struct platform_device *pdev)
return ret;
}
+ for (i = 0; i < qp->num_bcms; i++)
+ qcom_icc_bcm_init(qp->bcms[i], &pdev->dev);
+
for (i = 0; i < num_nodes; i++) {
size_t j;
@@ -512,9 +518,6 @@ static int qnoc_probe(struct platform_device *pdev)
}
data->num_nodes = num_nodes;
- for (i = 0; i < qp->num_bcms; i++)
- qcom_icc_bcm_init(qp->bcms[i], &pdev->dev);
-
platform_set_drvdata(pdev, qp);
return 0;
diff --git a/drivers/interconnect/qcom/sm8150.c b/drivers/interconnect/qcom/sm8150.c
index 9218efed04a0..c76b2c7f9b10 100644
--- a/drivers/interconnect/qcom/sm8150.c
+++ b/drivers/interconnect/qcom/sm8150.c
@@ -551,6 +551,9 @@ static int qnoc_probe(struct platform_device *pdev)
return ret;
}
+ for (i = 0; i < qp->num_bcms; i++)
+ qcom_icc_bcm_init(qp->bcms[i], &pdev->dev);
+
for (i = 0; i < num_nodes; i++) {
size_t j;
@@ -574,9 +577,6 @@ static int qnoc_probe(struct platform_device *pdev)
}
data->num_nodes = num_nodes;
- for (i = 0; i < qp->num_bcms; i++)
- qcom_icc_bcm_init(qp->bcms[i], &pdev->dev);
-
platform_set_drvdata(pdev, qp);
return 0;
@@ -627,6 +627,7 @@ static struct platform_driver qnoc_driver = {
.driver = {
.name = "qnoc-sm8150",
.of_match_table = qnoc_of_match,
+ .sync_state = icc_sync_state,
},
};
module_platform_driver(qnoc_driver);
diff --git a/drivers/interconnect/qcom/sm8250.c b/drivers/interconnect/qcom/sm8250.c
index 9b58946f7898..cc558fec74e3 100644
--- a/drivers/interconnect/qcom/sm8250.c
+++ b/drivers/interconnect/qcom/sm8250.c
@@ -567,6 +567,9 @@ static int qnoc_probe(struct platform_device *pdev)
return ret;
}
+ for (i = 0; i < qp->num_bcms; i++)
+ qcom_icc_bcm_init(qp->bcms[i], &pdev->dev);
+
for (i = 0; i < num_nodes; i++) {
size_t j;
@@ -590,9 +593,6 @@ static int qnoc_probe(struct platform_device *pdev)
}
data->num_nodes = num_nodes;
- for (i = 0; i < qp->num_bcms; i++)
- qcom_icc_bcm_init(qp->bcms[i], &pdev->dev);
-
platform_set_drvdata(pdev, qp);
return 0;
@@ -643,6 +643,7 @@ static struct platform_driver qnoc_driver = {
.driver = {
.name = "qnoc-sm8250",
.of_match_table = qnoc_of_match,
+ .sync_state = icc_sync_state,
},
};
module_platform_driver(qnoc_driver);
diff --git a/drivers/interconnect/samsung/Kconfig b/drivers/interconnect/samsung/Kconfig
new file mode 100644
index 000000000000..6820e4f772cc
--- /dev/null
+++ b/drivers/interconnect/samsung/Kconfig
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config INTERCONNECT_SAMSUNG
+ bool "Samsung SoC interconnect drivers"
+ depends on ARCH_EXYNOS || COMPILE_TEST
+ help
+ Interconnect drivers for Samsung SoCs.
+
+config INTERCONNECT_EXYNOS
+ tristate "Exynos generic interconnect driver"
+ depends on INTERCONNECT_SAMSUNG
+ default y if ARCH_EXYNOS
+ help
+ Generic interconnect driver for Exynos SoCs.
diff --git a/drivers/interconnect/samsung/Makefile b/drivers/interconnect/samsung/Makefile
new file mode 100644
index 000000000000..e19d1df7da48
--- /dev/null
+++ b/drivers/interconnect/samsung/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
+exynos-interconnect-objs := exynos.o
+
+obj-$(CONFIG_INTERCONNECT_EXYNOS) += exynos-interconnect.o
diff --git a/drivers/interconnect/samsung/exynos.c b/drivers/interconnect/samsung/exynos.c
new file mode 100644
index 000000000000..6559d8cf8068
--- /dev/null
+++ b/drivers/interconnect/samsung/exynos.c
@@ -0,0 +1,199 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Exynos generic interconnect provider driver
+ *
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd.
+ *
+ * Authors: Artur Świgoń <a.swigon@samsung.com>
+ * Sylwester Nawrocki <s.nawrocki@samsung.com>
+ */
+#include <linux/device.h>
+#include <linux/interconnect-provider.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_qos.h>
+#include <linux/slab.h>
+
+#define EXYNOS_ICC_DEFAULT_BUS_CLK_RATIO 8
+
+struct exynos_icc_priv {
+ struct device *dev;
+
+ /* One interconnect node per provider */
+ struct icc_provider provider;
+ struct icc_node *node;
+
+ struct dev_pm_qos_request qos_req;
+ u32 bus_clk_ratio;
+};
+
+static struct icc_node *exynos_icc_get_parent(struct device_node *np)
+{
+ struct of_phandle_args args;
+ struct icc_node_data *icc_node_data;
+ struct icc_node *icc_node;
+ int num, ret;
+
+ num = of_count_phandle_with_args(np, "interconnects",
+ "#interconnect-cells");
+ if (num < 1)
+ return NULL; /* parent nodes are optional */
+
+ /* Get the interconnect target node */
+ ret = of_parse_phandle_with_args(np, "interconnects",
+ "#interconnect-cells", 0, &args);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ icc_node_data = of_icc_get_from_provider(&args);
+ of_node_put(args.np);
+
+ if (IS_ERR(icc_node_data))
+ return ERR_CAST(icc_node_data);
+
+ icc_node = icc_node_data->node;
+ kfree(icc_node_data);
+
+ return icc_node;
+}
+
+static int exynos_generic_icc_set(struct icc_node *src, struct icc_node *dst)
+{
+ struct exynos_icc_priv *src_priv = src->data, *dst_priv = dst->data;
+ s32 src_freq = max(src->avg_bw, src->peak_bw) / src_priv->bus_clk_ratio;
+ s32 dst_freq = max(dst->avg_bw, dst->peak_bw) / dst_priv->bus_clk_ratio;
+ int ret;
+
+ ret = dev_pm_qos_update_request(&src_priv->qos_req, src_freq);
+ if (ret < 0) {
+ dev_err(src_priv->dev, "failed to update PM QoS of %s (src)\n",
+ src->name);
+ return ret;
+ }
+
+ ret = dev_pm_qos_update_request(&dst_priv->qos_req, dst_freq);
+ if (ret < 0) {
+ dev_err(dst_priv->dev, "failed to update PM QoS of %s (dst)\n",
+ dst->name);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct icc_node *exynos_generic_icc_xlate(struct of_phandle_args *spec,
+ void *data)
+{
+ struct exynos_icc_priv *priv = data;
+
+ if (spec->np != priv->dev->parent->of_node)
+ return ERR_PTR(-EINVAL);
+
+ return priv->node;
+}
+
+static int exynos_generic_icc_remove(struct platform_device *pdev)
+{
+ struct exynos_icc_priv *priv = platform_get_drvdata(pdev);
+ struct icc_node *parent_node, *node = priv->node;
+
+ parent_node = exynos_icc_get_parent(priv->dev->parent->of_node);
+ if (parent_node && !IS_ERR(parent_node))
+ icc_link_destroy(node, parent_node);
+
+ icc_nodes_remove(&priv->provider);
+ icc_provider_del(&priv->provider);
+
+ return 0;
+}
+
+static int exynos_generic_icc_probe(struct platform_device *pdev)
+{
+ struct device *bus_dev = pdev->dev.parent;
+ struct exynos_icc_priv *priv;
+ struct icc_provider *provider;
+ struct icc_node *icc_node, *icc_parent_node;
+ int ret;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->dev = &pdev->dev;
+ platform_set_drvdata(pdev, priv);
+
+ provider = &priv->provider;
+
+ provider->set = exynos_generic_icc_set;
+ provider->aggregate = icc_std_aggregate;
+ provider->xlate = exynos_generic_icc_xlate;
+ provider->dev = bus_dev;
+ provider->inter_set = true;
+ provider->data = priv;
+
+ ret = icc_provider_add(provider);
+ if (ret < 0)
+ return ret;
+
+ icc_node = icc_node_create(pdev->id);
+ if (IS_ERR(icc_node)) {
+ ret = PTR_ERR(icc_node);
+ goto err_prov_del;
+ }
+
+ priv->node = icc_node;
+ icc_node->name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%pOFn",
+ bus_dev->of_node);
+ if (of_property_read_u32(bus_dev->of_node, "samsung,data-clock-ratio",
+ &priv->bus_clk_ratio))
+ priv->bus_clk_ratio = EXYNOS_ICC_DEFAULT_BUS_CLK_RATIO;
+
+ /*
+ * Register a PM QoS request for the parent (devfreq) device.
+ */
+ ret = dev_pm_qos_add_request(bus_dev, &priv->qos_req,
+ DEV_PM_QOS_MIN_FREQUENCY, 0);
+ if (ret < 0)
+ goto err_node_del;
+
+ icc_node->data = priv;
+ icc_node_add(icc_node, provider);
+
+ icc_parent_node = exynos_icc_get_parent(bus_dev->of_node);
+ if (IS_ERR(icc_parent_node)) {
+ ret = PTR_ERR(icc_parent_node);
+ goto err_pmqos_del;
+ }
+ if (icc_parent_node) {
+ ret = icc_link_create(icc_node, icc_parent_node->id);
+ if (ret < 0)
+ goto err_pmqos_del;
+ }
+
+ return 0;
+
+err_pmqos_del:
+ dev_pm_qos_remove_request(&priv->qos_req);
+err_node_del:
+ icc_nodes_remove(provider);
+err_prov_del:
+ icc_provider_del(provider);
+ return ret;
+}
+
+static struct platform_driver exynos_generic_icc_driver = {
+ .driver = {
+ .name = "exynos-generic-icc",
+ .sync_state = icc_sync_state,
+ },
+ .probe = exynos_generic_icc_probe,
+ .remove = exynos_generic_icc_remove,
+};
+module_platform_driver(exynos_generic_icc_driver);
+
+MODULE_DESCRIPTION("Exynos generic interconnect driver");
+MODULE_AUTHOR("Artur Świgoń <a.swigon@samsung.com>");
+MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:exynos-generic-icc");
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