diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2019-06-19 11:29:22 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-19 20:29:15 +0200 |
| commit | 538eca25ff8f844c8c8f9c2f2e39f1fdb996f4aa (patch) | |
| tree | c034209ffb18fe85f642b99d7c7a592376aedd5b /drivers/hwtracing/coresight | |
| parent | 18e46e1109b41a89ef8ea1a9d4b8164c428b5a3b (diff) | |
| download | linux-538eca25ff8f844c8c8f9c2f2e39f1fdb996f4aa.tar.gz | |
coresight: tmc-etr: Rearrange probing default buffer size
As we are about to refactor the platform specific handling, make the default buffer size probing generic. Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc.c index 3b39f43c583d..9c5e615c1486 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.c +++ b/drivers/hwtracing/coresight/coresight-tmc.c @@ -378,6 +378,15 @@ static int tmc_etr_setup_caps(struct device *parent, u32 devid, void *dev_caps) return rc; } +static u32 tmc_etr_get_default_buffer_size(struct device *dev) +{ + u32 size; + + if (fwnode_property_read_u32(dev->fwnode, "arm,buffer-size", &size)) + size = SZ_1M; + return size; +} + static int tmc_probe(struct amba_device *adev, const struct amba_id *id) { int ret = 0; @@ -423,16 +432,10 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id) /* This device is not associated with a session */ drvdata->pid = -1; - if (drvdata->config_type == TMC_CONFIG_TYPE_ETR) { - if (np) - ret = of_property_read_u32(np, - "arm,buffer-size", - &drvdata->size); - if (ret) - drvdata->size = SZ_1M; - } else { + if (drvdata->config_type == TMC_CONFIG_TYPE_ETR) + drvdata->size = tmc_etr_get_default_buffer_size(dev); + else drvdata->size = readl_relaxed(drvdata->base + TMC_RSZ) * 4; - } desc.pdata = pdata; desc.dev = dev; |