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osd: overflow on 4k src height/width left-shift [1/1]

Browse Source 
PD#SWPL-10952

Problem:
osd for 4k native UI

Solution:
modify u32 to u64 for left-shift

Verify:
verified on g12b-w400

Change-Id: I9e98e3b5769d61132570f3f4bb1f47694cffde8f
Signed-off-by: Cao Jian <jian.cao@amlogic.com>
This commit is contained in:
Cao Jian
2019-07-30 21:51:34 +08:00
committed by Luke Go
parent aee823f14c
commit 8a5dca900d
1 changed files with 11 additions and 8 deletions
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19
drivers/amlogic/media/osd/osd_hw.c
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@@ -33,6 +33,7 @@
#include <linux/fs.h>
#include <linux/sysfs.h>
#include <linux/uaccess.h>
#include <asm/div64.h>
#include <linux/amlogic/cpu_version.h>
/* Android Headers */
@@ -2409,7 +2410,6 @@ int osd_set_scan_mode(u32 index)
&& (vinfo->height == 2160))) {
if ((osd_hw.fb_for_4k2k)
&& (osd_hw.free_scale_enable[index]))
if (!(osd_hw.osd_meson_dev.afbc_type))
osd_hw.scale_workaround = 1;
osd_hw.field_out_en[output_index] = 0;
} else if (((vinfo->width == 720)
@@ -4998,7 +4998,7 @@ static void osd_set_dummy_data(u32 index, u32 alpha)
static void osd_update_disp_freescale_enable(u32 index)
{
int hf_phase_step, vf_phase_step;
u64 hf_phase_step, vf_phase_step;
int src_w, src_h, dst_w, dst_h;
int bot_ini_phase, top_ini_phase;
int vsc_ini_rcv_num, vsc_ini_rpt_p0_num;
@@ -5070,12 +5070,15 @@ static void osd_update_disp_freescale_enable(u32 index)
VSYNCOSD_WR_MPEG_REG(osd_reg->osd_sc_ctrl0, 0);
}
hf_phase_step = (src_w << 18) / dst_w;
hf_phase_step = (hf_phase_step << 6);
if (shift_workaround)
vf_phase_step = ((src_h - 1) << 20) / dst_h;
else
vf_phase_step = (src_h << 20) / dst_h;
hf_phase_step = (u64)src_w << 24;
do_div(hf_phase_step, dst_w);
if (shift_workaround) {
vf_phase_step = (u64)(src_h - 1) << 20;
do_div(vf_phase_step, dst_h);
} else {
vf_phase_step = (u64)src_h << 20;
do_div(vf_phase_step, dst_h);
}
#ifdef NEW_PPS_PHASE
if (osd_hw.field_out_en[output_index]) {