diff options
author | Akash Asthana <akashast@codeaurora.org> | 2020-06-23 16:08:50 +0530 |
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committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-06-24 21:49:00 -0700 |
commit | 58ffbba6a39979baa22d2f7e69faeffa2d9c0641 (patch) | |
tree | a748e8a0a8329492ef8cbe1ae924962d900229d7 /drivers/soc | |
parent | be24c6a71ecfbd9436ea1f496eb518a53e06368c (diff) | |
download | linux-58ffbba6a39979baa22d2f7e69faeffa2d9c0641.tar.bz2 |
soc: qcom: geni: Support for ICC voting
Add necessary macros and structure variables to support ICC BW
voting from individual SE drivers.
Signed-off-by: Akash Asthana <akashast@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/1592908737-7068-2-git-send-email-akashast@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/soc')
-rw-r--r-- | drivers/soc/qcom/qcom-geni-se.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c index 7d622ea1274e..950e3470c498 100644 --- a/drivers/soc/qcom/qcom-geni-se.c +++ b/drivers/soc/qcom/qcom-geni-se.c @@ -92,6 +92,9 @@ struct geni_wrapper { struct clk_bulk_data ahb_clks[NUM_AHB_CLKS]; }; +static const char * const icc_path_names[] = {"qup-core", "qup-config", + "qup-memory"}; + #define QUP_HW_VER_REG 0x4 /* Common SE registers */ @@ -720,6 +723,85 @@ void geni_se_rx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len) } EXPORT_SYMBOL(geni_se_rx_dma_unprep); +int geni_icc_get(struct geni_se *se, const char *icc_ddr) +{ + int i, err; + const char *icc_names[] = {"qup-core", "qup-config", icc_ddr}; + + for (i = 0; i < ARRAY_SIZE(se->icc_paths); i++) { + if (!icc_names[i]) + continue; + + se->icc_paths[i].path = devm_of_icc_get(se->dev, icc_names[i]); + if (IS_ERR(se->icc_paths[i].path)) + goto err; + } + + return 0; + +err: + err = PTR_ERR(se->icc_paths[i].path); + if (err != -EPROBE_DEFER) + dev_err_ratelimited(se->dev, "Failed to get ICC path '%s': %d\n", + icc_names[i], err); + return err; + +} +EXPORT_SYMBOL(geni_icc_get); + +int geni_icc_set_bw(struct geni_se *se) +{ + int i, ret; + + for (i = 0; i < ARRAY_SIZE(se->icc_paths); i++) { + ret = icc_set_bw(se->icc_paths[i].path, + se->icc_paths[i].avg_bw, se->icc_paths[i].avg_bw); + if (ret) { + dev_err_ratelimited(se->dev, "ICC BW voting failed on path '%s': %d\n", + icc_path_names[i], ret); + return ret; + } + } + + return 0; +} +EXPORT_SYMBOL(geni_icc_set_bw); + +/* To do: Replace this by icc_bulk_enable once it's implemented in ICC core */ +int geni_icc_enable(struct geni_se *se) +{ + int i, ret; + + for (i = 0; i < ARRAY_SIZE(se->icc_paths); i++) { + ret = icc_enable(se->icc_paths[i].path); + if (ret) { + dev_err_ratelimited(se->dev, "ICC enable failed on path '%s': %d\n", + icc_path_names[i], ret); + return ret; + } + } + + return 0; +} +EXPORT_SYMBOL(geni_icc_enable); + +int geni_icc_disable(struct geni_se *se) +{ + int i, ret; + + for (i = 0; i < ARRAY_SIZE(se->icc_paths); i++) { + ret = icc_disable(se->icc_paths[i].path); + if (ret) { + dev_err_ratelimited(se->dev, "ICC disable failed on path '%s': %d\n", + icc_path_names[i], ret); + return ret; + } + } + + return 0; +} +EXPORT_SYMBOL(geni_icc_disable); + static int geni_se_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; |