evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

msm: camera: jpeg: Set no memory retention

Browse source 
Set the memory retention flags for certain hardware clocks to
save power. Memory does not need to be retained for these
clocks since the driver reinitializes the jpeg hardware
whenever the clocks are turned on.

CRs-Fixed: 1044373
Change-Id: Idd83064eaea2dee48b78a352a715633c04347217
Signed-off-by: Gautham Mayyuri <gmayyuri@codeaurora.org>
This commit is contained in:
Gautham Mayyuri 2016-08-02 15:28:15 -07:00 • committed by Gerrit - the friendly Code Review server
parent 2c28d7f5d4
commit 4b2c1679b1
2 changed files with 29 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
drivers/media/platform/msm/camera_v2/jpeg_10/msm_jpeg_platform.c
View file

@ -319,6 +319,7 @@ err_reg_enable:
int msm_jpeg_platform_setup(struct msm_jpeg_device *pgmn_dev)
{
int rc = -1;
int i;
struct resource *jpeg_irq_res;
void *jpeg_base, *vbif_base;
struct platform_device *pdev = pgmn_dev->pdev;
@ -356,6 +357,19 @@ int msm_jpeg_platform_setup(struct msm_jpeg_device *pgmn_dev)
goto err_jpeg_clk;
}
/*set memcore and mem periphery logic flags to 0*/
for (i = 0; i < pgmn_dev->num_clk; i++) {
if ((strcmp(pgmn_dev->jpeg_clk_info[i].clk_name,
"core_clk") == 0) ||
(strcmp(pgmn_dev->jpeg_clk_info[i].clk_name,
"mmss_camss_jpeg_axi_clk") == 0)) {
msm_camera_set_clk_flags(pgmn_dev->jpeg_clk[i],
CLKFLAG_NORETAIN_MEM);
msm_camera_set_clk_flags(pgmn_dev->jpeg_clk[i],
CLKFLAG_NORETAIN_PERIPH);
}
}
/* get all the regulators information */
rc = msm_camera_get_regulator_info(pdev, &pgmn_dev->jpeg_vdd,
&pgmn_dev->num_reg);

15
drivers/media/platform/msm/camera_v2/jpeg_dma/msm_jpeg_dma_dev.c
View file

@ -24,6 +24,7 @@
#include <media/videobuf2-core.h>
#include <media/v4l2-mem2mem.h>
#include <media/msm_jpeg_dma.h>
#include <linux/clk/msm-clk.h>
#include "msm_jpeg_dma_dev.h"
#include "msm_jpeg_dma_hw.h"
@ -1258,6 +1259,7 @@ static int jpegdma_probe(struct platform_device *pdev)
{
struct msm_jpegdma_device *jpegdma;
int ret;
int i;
dev_dbg(&pdev->dev, "jpeg v4l2 DMA probed\n");
/* Jpeg dma device struct */
@ -1293,6 +1295,19 @@ static int jpegdma_probe(struct platform_device *pdev)
if (ret < 0)
goto error_get_clocks;
/*set memcore and mem periphery logic flags to 0*/
for (i = 0; i < jpegdma->num_clk; i++) {
if ((strcmp(jpegdma->jpeg_clk_info[i].clk_name,
"core_clk") == 0) ||
(strcmp(jpegdma->jpeg_clk_info[i].clk_name,
"mmss_camss_jpeg_axi_clk") == 0)) {
msm_camera_set_clk_flags(jpegdma->clk[i],
CLKFLAG_NORETAIN_MEM);
msm_camera_set_clk_flags(jpegdma->clk[i],
CLKFLAG_NORETAIN_PERIPH);
}
}
ret = msm_jpegdma_hw_get_qos(jpegdma);
if (ret < 0)
goto error_qos_get;