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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2019-05-03 11:44:41 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-03 19:14:30 +0300 |
| commit | aac8da65174a35749fcf21dbca4c1be314b562b5 (patch) | |
| tree | 96fc66afca1fdd08e17b974e154d35c2e772deb0 /drivers/hwtracing/intel_th/msu.h | |
| parent | 7b7036d47c356a40818e516a69ac81a5dcc1613f (diff) | |
| download | linux-aac8da65174a35749fcf21dbca4c1be314b562b5.tar.xz | |
intel_th: msu: Start handling IRQs
We intend to use the interrupt to detect Last Block condition in the MSU
driver, which we can use for double-buffering software-managed data
transfers.
Add an interrupt handler to the MSU driver.
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/msu.h')
| -rw-r--r-- | drivers/hwtracing/intel_th/msu.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/hwtracing/intel_th/msu.h b/drivers/hwtracing/intel_th/msu.h index 9cc8aced6116..e8cb819a3804 100644 --- a/drivers/hwtracing/intel_th/msu.h +++ b/drivers/hwtracing/intel_th/msu.h @@ -11,6 +11,7 @@ enum { REG_MSU_MSUPARAMS = 0x0000, REG_MSU_MSUSTS = 0x0008, + REG_MSU_MINTCTL = 0x0004, /* MSU-global interrupt control */ REG_MSU_MSC0CTL = 0x0100, /* MSC0 control */ REG_MSU_MSC0STS = 0x0104, /* MSC0 status */ REG_MSU_MSC0BAR = 0x0108, /* MSC0 output base address */ @@ -28,6 +29,8 @@ enum { /* MSUSTS bits */ #define MSUSTS_MSU_INT BIT(0) +#define MSUSTS_MSC0BLAST BIT(16) +#define MSUSTS_MSC1BLAST BIT(24) /* MSCnCTL bits */ #define MSC_EN BIT(0) @@ -36,6 +39,11 @@ enum { #define MSC_MODE (BIT(4) | BIT(5)) #define MSC_LEN (BIT(8) | BIT(9) | BIT(10)) +/* MINTCTL bits */ +#define MICDE BIT(0) +#define M0BLIE BIT(16) +#define M1BLIE BIT(24) + /* MSC operating modes (MSC_MODE) */ enum { MSC_MODE_SINGLE = 0, |