mirror of https://gitee.com/openkylin/linux.git
i2c: i2c-qcom-geni: Add interconnect support
Get the interconnect paths for I2C based Serial Engine device and vote according to the bus speed of the driver. Signed-off-by: Akash Asthana <akashast@codeaurora.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Acked-by: Wolfram Sang <wsa@kernel.org> Link: https://lore.kernel.org/r/1592908737-7068-4-git-send-email-akashast@codeaurora.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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@ -557,6 +557,22 @@ static int geni_i2c_probe(struct platform_device *pdev)
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gi2c->adap.dev.of_node = dev->of_node;
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strlcpy(gi2c->adap.name, "Geni-I2C", sizeof(gi2c->adap.name));
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ret = geni_icc_get(&gi2c->se, "qup-memory");
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if (ret)
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return ret;
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/*
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* Set the bus quota for core and cpu to a reasonable value for
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* register access.
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* Set quota for DDR based on bus speed.
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*/
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gi2c->se.icc_paths[GENI_TO_CORE].avg_bw = GENI_DEFAULT_BW;
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gi2c->se.icc_paths[CPU_TO_GENI].avg_bw = GENI_DEFAULT_BW;
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gi2c->se.icc_paths[GENI_TO_DDR].avg_bw = Bps_to_icc(gi2c->clk_freq_out);
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ret = geni_icc_set_bw(&gi2c->se);
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if (ret)
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return ret;
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ret = geni_se_resources_on(&gi2c->se);
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if (ret) {
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dev_err(dev, "Error turning on resources %d\n", ret);
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@ -579,6 +595,10 @@ static int geni_i2c_probe(struct platform_device *pdev)
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return ret;
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}
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ret = geni_icc_disable(&gi2c->se);
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if (ret)
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return ret;
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dev_dbg(dev, "i2c fifo/se-dma mode. fifo depth:%d\n", tx_depth);
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gi2c->suspended = 1;
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@ -623,7 +643,7 @@ static int __maybe_unused geni_i2c_runtime_suspend(struct device *dev)
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gi2c->suspended = 1;
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}
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return 0;
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return geni_icc_disable(&gi2c->se);
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}
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static int __maybe_unused geni_i2c_runtime_resume(struct device *dev)
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@ -631,6 +651,10 @@ static int __maybe_unused geni_i2c_runtime_resume(struct device *dev)
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int ret;
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struct geni_i2c_dev *gi2c = dev_get_drvdata(dev);
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ret = geni_icc_enable(&gi2c->se);
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if (ret)
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return ret;
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ret = geni_se_resources_on(&gi2c->se);
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if (ret)
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return ret;
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