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qcacmn: add generic hweight16,32 implementation

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In driver there are multiple implementations to read the number of
1's set, have a generic qdf implementation to get the same.

Change-Id: Idf769c221b33e867720943fb8c42158edd9600de
CRs-Fixed: 2716525
This commit is contained in:
Arun Kumar Khandavalli
2020-06-23 11:02:38 +05:30
committed by nshrivas
parent 1c487473e3
commit a8c41c0988
1 changed files with 39 additions and 2 deletions
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41
qdf/inc/qdf_util.h
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@@ -631,10 +631,10 @@ int qdf_get_cpu(void)
} }
/** /**
* qdf_get_hweight8() - count num of 1's in bitmap * qdf_get_hweight8() - count num of 1's in 8-bit bitmap
* @value: input bitmap * @value: input bitmap
* *
* Count num of 1's set in the bitmap * Count num of 1's set in the 8-bit bitmap
* *
* Return: num of 1's * Return: num of 1's
*/ */
@@ -646,6 +646,43 @@ unsigned int qdf_get_hweight8(unsigned int w)
return (res + (res >> 4)) & 0x0F; return (res + (res >> 4)) & 0x0F;
} }
/**
* qdf_get_hweight16() - count num of 1's in 16-bit bitmap
* @value: input bitmap
*
* Count num of 1's set in the 16-bit bitmap
*
* Return: num of 1's
*/
static inline
unsigned int qdf_get_hweight16(unsigned int w)
{
unsigned int res = (w & 0x5555) + ((w >> 1) & 0x5555);
res = (res & 0x3333) + ((res >> 2) & 0x3333);
res = (res & 0x0F0F) + ((res >> 4) & 0x0F0F);
return (res & 0x00FF) + ((res >> 8) & 0x00FF);
}
/**
* qdf_get_hweight32() - count num of 1's in 32-bit bitmap
* @value: input bitmap
*
* Count num of 1's set in the 32-bit bitmap
*
* Return: num of 1's
*/
static inline
unsigned int qdf_get_hweight32(unsigned int w)
{
unsigned int res = (w & 0x55555555) + ((w >> 1) & 0x55555555);
res = (res & 0x33333333) + ((res >> 2) & 0x33333333);
res = (res & 0x0F0F0F0F) + ((res >> 4) & 0x0F0F0F0F);
res = (res & 0x00FF00FF) + ((res >> 8) & 0x00FF00FF);
return (res & 0x0000FFFF) + ((res >> 16) & 0x0000FFFF);
}
/** /**
* qdf_device_init_wakeup() - allow a device to wake up the aps system * qdf_device_init_wakeup() - allow a device to wake up the aps system
* @qdf_dev: the qdf device context * @qdf_dev: the qdf device context