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media: i2c: ov5640: Remain in power down for DVP mode unless streaming 

Keep the sensor in software power down mode and wake up only in
ov5640_set_stream_dvp() callback.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Lad Prabhakar 2020-09-04 22:18:30 +02:00 committed by Mauro Carvalho Chehab
parent 32b6e400c3
commit 3b987d70e9
1 changed files with 16 additions and 3 deletions
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19
drivers/media/i2c/ov5640.c
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@ -34,6 +34,8 @@
#define OV5640_REG_SYS_RESET02 0x3002
#define OV5640_REG_SYS_CLOCK_ENABLE02 0x3006
#define OV5640_REG_SYS_CTRL0 0x3008
#define OV5640_REG_SYS_CTRL0_SW_PWDN 0x42
#define OV5640_REG_SYS_CTRL0_SW_PWUP 0x02
#define OV5640_REG_CHIP_ID 0x300a
#define OV5640_REG_IO_MIPI_CTRL00 0x300e
#define OV5640_REG_PAD_OUTPUT_ENABLE01 0x3017
@ -1120,6 +1122,12 @@ static int ov5640_load_regs(struct ov5640_dev *sensor,
val = regs->val;
mask = regs->mask;
/* remain in power down mode for DVP */
if (regs->reg_addr == OV5640_REG_SYS_CTRL0 &&
val == OV5640_REG_SYS_CTRL0_SW_PWUP &&
sensor->ep.bus_type != V4L2_MBUS_CSI2_DPHY)
continue;
if (mask)
ret = ov5640_mod_reg(sensor, reg_addr, mask, val);
else
@ -1297,9 +1305,14 @@ static int ov5640_set_stream_dvp(struct ov5640_dev *sensor, bool on)
* PAD OUTPUT ENABLE 02
* - [7:2]: D[5:0] output enable
*/
return ov5640_write_reg(sensor,
OV5640_REG_PAD_OUTPUT_ENABLE02,
on ? 0xfc : 0);
ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02,
on ? 0xfc : 0);
if (ret)
return ret;
return ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0, on ?
OV5640_REG_SYS_CTRL0_SW_PWUP :
OV5640_REG_SYS_CTRL0_SW_PWDN);
}
static int ov5640_set_stream_mipi(struct ov5640_dev *sensor, bool on)