korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-16 08:44:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

media: atomisp: pci: hive_isp_css_common: host: vmem: Replace SUBWORD macros with functions

Browse Source 
Replace the macros SUBWORD() and INV_SUBWORD() with functions to comply
with Linux coding style standards.

Link: https://lore.kernel.org/r/20230120182625.23227-1-bpappas@pappasbrent.com

Signed-off-by: Brent Pappas <bpappas@pappasbrent.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Brent Pappas 2023-01-20 19:26:25 +01:00 committed by Mauro Carvalho Chehab
parent 2e82f054b5
commit 197ec0f48d
1 changed files with 14 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem.c
View File

@ -28,10 +28,18 @@ typedef hive_uedge *hive_wide;
/* Copied from SDK: sim_semantics.c */
/* subword bits move like this: MSB[____xxxx____]LSB -> MSB[00000000xxxx]LSB */
#define SUBWORD(w, start, end) (((w) & (((1ULL << ((end) - 1)) - 1) << 1 | 1)) >> (start))
static inline hive_uedge
subword(hive_uedge w, unsigned int start, unsigned int end)
{
return (w & (((1ULL << (end - 1)) - 1) << 1 | 1)) >> start;
}
/* inverse subword bits move like this: MSB[xxxx____xxxx]LSB -> MSB[xxxx0000xxxx]LSB */
#define INV_SUBWORD(w, start, end) ((w) & (~(((1ULL << ((end) - 1)) - 1) << 1 | 1) | ((1ULL << (start)) - 1)))
static inline hive_uedge
inv_subword(hive_uedge w, unsigned int start, unsigned int end)
{
return w & (~(((1ULL << (end - 1)) - 1) << 1 | 1) | ((1ULL << start) - 1));
}
#define uedge_bits (8 * sizeof(hive_uedge))
#define move_lower_bits(target, target_bit, src, src_bit) move_subword(target, target_bit, src, 0, src_bit)
@ -50,18 +58,18 @@ move_subword(
unsigned int start_bit = target_bit % uedge_bits;
unsigned int subword_width = src_end - src_start;
hive_uedge src_subword = SUBWORD(src, src_start, src_end);
hive_uedge src_subword = subword(src, src_start, src_end);
if (subword_width + start_bit > uedge_bits) { /* overlap */
hive_uedge old_val1;
hive_uedge old_val0 = INV_SUBWORD(target[start_elem], start_bit, uedge_bits);
hive_uedge old_val0 = inv_subword(target[start_elem], start_bit, uedge_bits);
target[start_elem] = old_val0 | (src_subword << start_bit);
old_val1 = INV_SUBWORD(target[start_elem + 1], 0,
old_val1 = inv_subword(target[start_elem + 1], 0,
subword_width + start_bit - uedge_bits);
target[start_elem + 1] = old_val1 | (src_subword >> (uedge_bits - start_bit));
} else {
hive_uedge old_val = INV_SUBWORD(target[start_elem], start_bit,
hive_uedge old_val = inv_subword(target[start_elem], start_bit,
start_bit + subword_width);
target[start_elem] = old_val | (src_subword << start_bit);