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i2c: i2c-qcom-geni: Add interconnect support

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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>
This commit is contained in:
Akash Asthana 2020-06-23 16:08:52 +05:30 • committed by Bjorn Andersson
parent 048eb908a1
commit bf225ed357
1 changed files with 25 additions and 1 deletions
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26
drivers/i2c/busses/i2c-qcom-geni.c
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@ -557,6 +557,22 @@ static int geni_i2c_probe(struct platform_device *pdev)
gi2c->adap.dev.of_node = dev->of_node; gi2c->adap.dev.of_node = dev->of_node;
strlcpy(gi2c->adap.name, "Geni-I2C", sizeof(gi2c->adap.name)); strlcpy(gi2c->adap.name, "Geni-I2C", sizeof(gi2c->adap.name));
ret = geni_icc_get(&gi2c->se, "qup-memory");
if (ret)
return ret;
/*
* Set the bus quota for core and cpu to a reasonable value for
* register access.
* Set quota for DDR based on bus speed.
*/
gi2c->se.icc_paths[GENI_TO_CORE].avg_bw = GENI_DEFAULT_BW;
gi2c->se.icc_paths[CPU_TO_GENI].avg_bw = GENI_DEFAULT_BW;
gi2c->se.icc_paths[GENI_TO_DDR].avg_bw = Bps_to_icc(gi2c->clk_freq_out);
ret = geni_icc_set_bw(&gi2c->se);
if (ret)
return ret;
ret = geni_se_resources_on(&gi2c->se); ret = geni_se_resources_on(&gi2c->se);
if (ret) { if (ret) {
dev_err(dev, "Error turning on resources %d\n", ret); dev_err(dev, "Error turning on resources %d\n", ret);
@ -579,6 +595,10 @@ static int geni_i2c_probe(struct platform_device *pdev)
return ret; return ret;
} }
ret = geni_icc_disable(&gi2c->se);
if (ret)
return ret;
dev_dbg(dev, "i2c fifo/se-dma mode. fifo depth:%d\n", tx_depth); dev_dbg(dev, "i2c fifo/se-dma mode. fifo depth:%d\n", tx_depth);
gi2c->suspended = 1; gi2c->suspended = 1;
@ -623,7 +643,7 @@ static int __maybe_unused geni_i2c_runtime_suspend(struct device *dev)
gi2c->suspended = 1; gi2c->suspended = 1;
} }
return 0; return geni_icc_disable(&gi2c->se);
} }
static int __maybe_unused geni_i2c_runtime_resume(struct device *dev) static int __maybe_unused geni_i2c_runtime_resume(struct device *dev)
@ -631,6 +651,10 @@ static int __maybe_unused geni_i2c_runtime_resume(struct device *dev)
int ret; int ret;
struct geni_i2c_dev *gi2c = dev_get_drvdata(dev); struct geni_i2c_dev *gi2c = dev_get_drvdata(dev);
ret = geni_icc_enable(&gi2c->se);
if (ret)
return ret;
ret = geni_se_resources_on(&gi2c->se); ret = geni_se_resources_on(&gi2c->se);
if (ret) if (ret)
return ret; return ret;