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interconnect: qcom: icc-rpm: Cache every clock rate

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The cached clock rate is used for all bus clocks, thus it has the
assumption that all interconnect clock rates are always same, this
causes trouble if we want to set different clock rates separately.

This patch is to allocate a clock rate array to cache every clock
rate.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Link: https://lore.kernel.org/r/20220416031029.693211-3-leo.yan@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
This commit is contained in:
Leo Yan 2022-05-04 10:46:18 +03:00 committed by Georgi Djakov
parent 65fac3b349
commit 97f7d384ac
2 changed files with 10 additions and 6 deletions
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14
drivers/interconnect/qcom/icc-rpm.c
View File

@ -274,20 +274,19 @@ static int qcom_icc_set(struct icc_node *src, struct icc_node *dst)
do_div(rate, qn->buswidth); do_div(rate, qn->buswidth);
rate = min_t(u64, rate, LONG_MAX); rate = min_t(u64, rate, LONG_MAX);
if (qp->bus_clk_rate == rate)
return 0;
for (i = 0; i < qp->num_clks; i++) { for (i = 0; i < qp->num_clks; i++) {
if (qp->bus_clk_rate[i] == rate)
continue;
ret = clk_set_rate(qp->bus_clks[i].clk, rate); ret = clk_set_rate(qp->bus_clks[i].clk, rate);
if (ret) { if (ret) {
pr_err("%s clk_set_rate error: %d\n", pr_err("%s clk_set_rate error: %d\n",
qp->bus_clks[i].id, ret); qp->bus_clks[i].id, ret);
return ret; return ret;
} }
qp->bus_clk_rate[i] = rate;
} }
qp->bus_clk_rate = rate;
return 0; return 0;
} }
@ -332,6 +331,11 @@ int qnoc_probe(struct platform_device *pdev)
if (!qp) if (!qp)
return -ENOMEM; return -ENOMEM;
qp->bus_clk_rate = devm_kcalloc(dev, cd_num, sizeof(*qp->bus_clk_rate),
GFP_KERNEL);
if (!qp->bus_clk_rate)
return -ENOMEM;
data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes), data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes),
GFP_KERNEL); GFP_KERNEL);
if (!data) if (!data)

2
drivers/interconnect/qcom/icc-rpm.h
View File

@ -34,7 +34,7 @@ struct qcom_icc_provider {
enum qcom_icc_type type; enum qcom_icc_type type;
struct regmap *regmap; struct regmap *regmap;
unsigned int qos_offset; unsigned int qos_offset;
u64 bus_clk_rate; u64 *bus_clk_rate;
struct clk_bulk_data bus_clks[]; struct clk_bulk_data bus_clks[];
}; };