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Subject[PATCH 2/5] interconnect: qcom: qcs404: use shared code
Date
Use shared code for aggregate functionalities and probe function
to remove duplicated code.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
---
drivers/interconnect/qcom/qcs404.c | 242 +----------------------------
1 file changed, 8 insertions(+), 234 deletions(-)

diff --git a/drivers/interconnect/qcom/qcs404.c b/drivers/interconnect/qcom/qcs404.c
index d4769a5ea182..03e9ae030cc4 100644
--- a/drivers/interconnect/qcom/qcs404.c
+++ b/drivers/interconnect/qcom/qcs404.c
@@ -9,15 +9,12 @@
#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 <linux/of_device.h>

-#include "smd-rpm.h"

-#define RPM_BUS_MASTER_REQ 0x73616d62
-#define RPM_BUS_SLAVE_REQ 0x766c7362
+#include "smd-rpm.h"
+#include "icc-rpm.h"

enum {
QCS404_MASTER_AMPSS_M0 = 1,
@@ -95,67 +92,11 @@ enum {
QCS404_SLAVE_LPASS,
};

-#define to_qcom_provider(_provider) \
- container_of(_provider, struct qcom_icc_provider, provider)
-
-static const struct clk_bulk_data bus_clocks[] = {
+static const struct clk_bulk_data qcs404_bus_clocks[] = {
{ .id = "bus" },
{ .id = "bus_a" },
};

-/**
- * 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);
@@ -327,178 +268,11 @@ static struct qcom_icc_desc qcs404_snoc = {
.num_nodes = ARRAY_SIZE(qcs404_snoc_nodes),
};

-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;
-}
-
-static int qnoc_probe(struct platform_device *pdev)
+static int qcs404_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_kzalloc(dev, struct_size(data, nodes, num_nodes),
- 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 = 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);
-
- 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:
- icc_nodes_remove(provider);
- 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);
-
- 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(qcs404_bus_clocks),
+ ARRAY_SIZE(qcs404_bus_clocks), qcs404_bus_clocks);
}

static const struct of_device_id qcs404_noc_of_match[] = {
@@ -510,7 +284,7 @@ static const struct of_device_id qcs404_noc_of_match[] = {
MODULE_DEVICE_TABLE(of, qcs404_noc_of_match);

static struct platform_driver qcs404_noc_driver = {
- .probe = qnoc_probe,
+ .probe = qcs404_qnoc_probe,
.remove = qnoc_remove,
.driver = {
.name = "qnoc-qcs404",
--
2.17.1
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