diff options
author | Alex Elder <elder@linaro.org> | 2021-01-15 15:50:47 +0300 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2021-01-18 22:51:05 +0300 |
commit | db6cd5148724b07617cf43eb2cb916a853d52bc3 (patch) | |
tree | f88d7ddfd381b9c2499e5d13bfafc9ef4cdcc655 /drivers/net | |
parent | 5b40810b19db072b74e2fea7e927a908c1b7c5c5 (diff) | |
download | linux-db6cd5148724b07617cf43eb2cb916a853d52bc3.tar.xz |
net: ipa: store average and peak interconnect bandwidth
Add fields in the ipa_interconnect structure to hold the average and
peak bandwidth values for the interconnect. Pass the configuring
data for interconnects to ipa_interconnect_init() so these values
can be recorded, and use them when enabling the interconnects.
There's no longer any need to keep a copy of the interconnect data
after initialization.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/ipa/ipa_clock.c | 88 |
1 files changed, 52 insertions, 36 deletions
diff --git a/drivers/net/ipa/ipa_clock.c b/drivers/net/ipa/ipa_clock.c index 2bf5af6823d8..537c72b5267f 100644 --- a/drivers/net/ipa/ipa_clock.c +++ b/drivers/net/ipa/ipa_clock.c @@ -33,9 +33,13 @@ /** * struct ipa_interconnect - IPA interconnect information * @path: Interconnect path + * @average_bandwidth: Average interconnect bandwidth (KB/second) + * @peak_bandwidth: Peak interconnect bandwidth (KB/second) */ struct ipa_interconnect { struct icc_path *path; + u32 average_bandwidth; + u32 peak_bandwidth; }; /** @@ -44,14 +48,12 @@ struct ipa_interconnect { * @mutex: Protects clock enable/disable * @core: IPA core clock * @interconnect: Interconnect array - * @interconnect_data: Interconnect configuration data */ struct ipa_clock { refcount_t count; struct mutex mutex; /* protects clock enable/disable */ struct clk *core; - struct ipa_interconnect *interconnect[IPA_INTERCONNECT_COUNT]; - const struct ipa_interconnect_data *interconnect_data; + struct ipa_interconnect interconnect[IPA_INTERCONNECT_COUNT]; }; static struct icc_path * @@ -61,38 +63,52 @@ ipa_interconnect_init_one(struct device *dev, const char *name) path = of_icc_get(dev, name); if (IS_ERR(path)) - dev_err(dev, "error %ld getting %s interconnect\n", - PTR_ERR(path), name); + dev_err(dev, "error %d getting %s interconnect\n", + (int)PTR_ERR(path), name); return path; } /* Initialize interconnects required for IPA operation */ -static int ipa_interconnect_init(struct ipa_clock *clock, struct device *dev) +static int ipa_interconnect_init(struct ipa_clock *clock, struct device *dev, + const struct ipa_interconnect_data *data) { + struct ipa_interconnect *interconnect; struct icc_path *path; path = ipa_interconnect_init_one(dev, "memory"); if (IS_ERR(path)) goto err_return; - clock->interconnect[IPA_INTERCONNECT_MEMORY]->path = path; + interconnect = &clock->interconnect[IPA_INTERCONNECT_MEMORY]; + interconnect->path = path; + interconnect->average_bandwidth = data->average_bandwidth; + interconnect->peak_bandwidth = data->peak_bandwidth; + data++; path = ipa_interconnect_init_one(dev, "imem"); if (IS_ERR(path)) goto err_memory_path_put; - clock->interconnect[IPA_INTERCONNECT_IMEM]->path = path; + interconnect = &clock->interconnect[IPA_INTERCONNECT_IMEM]; + interconnect->path = path; + interconnect->average_bandwidth = data->average_bandwidth; + interconnect->peak_bandwidth = data->peak_bandwidth; + data++; path = ipa_interconnect_init_one(dev, "config"); if (IS_ERR(path)) goto err_imem_path_put; - clock->interconnect[IPA_INTERCONNECT_CONFIG]->path = path; + interconnect = &clock->interconnect[IPA_INTERCONNECT_CONFIG]; + interconnect->path = path; + interconnect->average_bandwidth = data->average_bandwidth; + interconnect->peak_bandwidth = data->peak_bandwidth; + data++; return 0; err_imem_path_put: - icc_put(clock->interconnect[IPA_INTERCONNECT_IMEM]->path); + icc_put(clock->interconnect[IPA_INTERCONNECT_IMEM].path); err_memory_path_put: - icc_put(clock->interconnect[IPA_INTERCONNECT_MEMORY]->path); + icc_put(clock->interconnect[IPA_INTERCONNECT_MEMORY].path); err_return: return PTR_ERR(path); } @@ -100,44 +116,44 @@ err_return: /* Inverse of ipa_interconnect_init() */ static void ipa_interconnect_exit(struct ipa_clock *clock) { - icc_put(clock->interconnect[IPA_INTERCONNECT_CONFIG]->path); - icc_put(clock->interconnect[IPA_INTERCONNECT_IMEM]->path); - icc_put(clock->interconnect[IPA_INTERCONNECT_MEMORY]->path); + icc_put(clock->interconnect[IPA_INTERCONNECT_CONFIG].path); + icc_put(clock->interconnect[IPA_INTERCONNECT_IMEM].path); + icc_put(clock->interconnect[IPA_INTERCONNECT_MEMORY].path); } /* Currently we only use one bandwidth level, so just "enable" interconnects */ static int ipa_interconnect_enable(struct ipa *ipa) { - const struct ipa_interconnect_data *data; + struct ipa_interconnect *interconnect; struct ipa_clock *clock = ipa->clock; int ret; - data = &clock->interconnect_data[IPA_INTERCONNECT_MEMORY]; - ret = icc_set_bw(clock->interconnect[IPA_INTERCONNECT_MEMORY]->path, - data->average_bandwidth, data->peak_bandwidth); + interconnect = &clock->interconnect[IPA_INTERCONNECT_MEMORY]; + ret = icc_set_bw(interconnect->path, interconnect->average_bandwidth, + interconnect->peak_bandwidth); if (ret) return ret; - data = &clock->interconnect_data[IPA_INTERCONNECT_IMEM]; - ret = icc_set_bw(clock->interconnect[IPA_INTERCONNECT_IMEM]->path, - data->average_bandwidth, data->peak_bandwidth); + interconnect = &clock->interconnect[IPA_INTERCONNECT_IMEM]; + ret = icc_set_bw(interconnect->path, interconnect->average_bandwidth, + interconnect->peak_bandwidth); if (ret) goto err_memory_path_disable; - data = &clock->interconnect_data[IPA_INTERCONNECT_CONFIG]; - ret = icc_set_bw(clock->interconnect[IPA_INTERCONNECT_CONFIG]->path, - data->average_bandwidth, data->peak_bandwidth); + interconnect = &clock->interconnect[IPA_INTERCONNECT_CONFIG]; + ret = icc_set_bw(interconnect->path, interconnect->average_bandwidth, + interconnect->peak_bandwidth); if (ret) goto err_imem_path_disable; return 0; err_imem_path_disable: - (void)icc_set_bw(clock->interconnect[IPA_INTERCONNECT_IMEM]->path, - 0, 0); + interconnect = &clock->interconnect[IPA_INTERCONNECT_IMEM]; + (void)icc_set_bw(interconnect->path, 0, 0); err_memory_path_disable: - (void)icc_set_bw(clock->interconnect[IPA_INTERCONNECT_MEMORY]->path, - 0, 0); + interconnect = &clock->interconnect[IPA_INTERCONNECT_MEMORY]; + (void)icc_set_bw(interconnect->path, 0, 0); return ret; } @@ -145,22 +161,23 @@ err_memory_path_disable: /* To disable an interconnect, we just its bandwidth to 0 */ static void ipa_interconnect_disable(struct ipa *ipa) { + struct ipa_interconnect *interconnect; struct ipa_clock *clock = ipa->clock; int result = 0; int ret; - ret = icc_set_bw(clock->interconnect[IPA_INTERCONNECT_MEMORY]->path, - 0, 0); + interconnect = &clock->interconnect[IPA_INTERCONNECT_MEMORY]; + ret = icc_set_bw(interconnect->path, 0, 0); if (ret) result = ret; - ret = icc_set_bw(clock->interconnect[IPA_INTERCONNECT_IMEM]->path, - 0, 0); + interconnect = &clock->interconnect[IPA_INTERCONNECT_IMEM]; + ret = icc_set_bw(interconnect->path, 0, 0); if (ret && !result) result = ret; - ret = icc_set_bw(clock->interconnect[IPA_INTERCONNECT_CONFIG]->path, - 0, 0); + interconnect = &clock->interconnect[IPA_INTERCONNECT_IMEM]; + ret = icc_set_bw(interconnect->path, 0, 0); if (ret && !result) result = ret; @@ -286,9 +303,8 @@ ipa_clock_init(struct device *dev, const struct ipa_clock_data *data) goto err_clk_put; } clock->core = clk; - clock->interconnect_data = data->interconnect; - ret = ipa_interconnect_init(clock, dev); + ret = ipa_interconnect_init(clock, dev, data->interconnect); if (ret) goto err_kfree; |