diff options
| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2016-02-15 19:11:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-20 14:09:14 -0800 |
| commit | 4d02ceff32f35f3ea745be6114503c2d2505da99 (patch) | |
| tree | 8e4aaa8c266e4cac18b6902bff3022d0c0fea297 /drivers/hwtracing/intel_th/core.c | |
| parent | c1a327c4d3d7d2ce2c75e77fcfd34a729ab45f6f (diff) | |
intel_th: Update scratchpad bits according to enabled output activity
Intel TH implements a scratchpad register to indicate to the firmware
and external debuggers what trace configuration is enabled so that
everybody plays nicely together. The register is a bit field and the
bit assignment convention is described in the developer's manual.
This patch enables the driver to automatically set scratchpad register
bits according to the output configuration that's enabled.
Based on work by Yann Fouassier.
Signed-off-by: Yann Fouassier <yann.fouassier@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/intel_th/core.c')
| -rw-r--r-- | drivers/hwtracing/intel_th/core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c index 165d3001c301..b8b9895da5d1 100644 --- a/drivers/hwtracing/intel_th/core.c +++ b/drivers/hwtracing/intel_th/core.c @@ -319,6 +319,7 @@ static struct intel_th_subdevice { unsigned nres; unsigned type; unsigned otype; + unsigned scrpd; int id; } intel_th_subdevices[TH_SUBDEVICE_MAX] = { { @@ -352,6 +353,7 @@ static struct intel_th_subdevice { .id = 0, .type = INTEL_TH_OUTPUT, .otype = GTH_MSU, + .scrpd = SCRPD_MEM_IS_PRIM_DEST | SCRPD_MSC0_IS_ENABLED, }, { .nres = 2, @@ -371,6 +373,7 @@ static struct intel_th_subdevice { .id = 1, .type = INTEL_TH_OUTPUT, .otype = GTH_MSU, + .scrpd = SCRPD_MEM_IS_PRIM_DEST | SCRPD_MSC1_IS_ENABLED, }, { .nres = 2, @@ -403,6 +406,7 @@ static struct intel_th_subdevice { .name = "pti", .type = INTEL_TH_OUTPUT, .otype = GTH_PTI, + .scrpd = SCRPD_PTI_IS_PRIM_DEST, }, { .nres = 1, @@ -477,6 +481,7 @@ static int intel_th_populate(struct intel_th *th, struct resource *devres, thdev->dev.devt = MKDEV(th->major, i); thdev->output.type = subdev->otype; thdev->output.port = -1; + thdev->output.scratchpad = subdev->scrpd; } err = device_add(&thdev->dev); |