Commit 3b987d70 authored by Lad Prabhakar's avatar Lad Prabhakar Committed by Mauro Carvalho Chehab
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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: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Tested-by: default avatarJacopo Mondi <jacopo@jmondi.org>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 32b6e400

drivers/media/i2c/ov5640.c

+16 −3
Original line number Diff line number Diff line
@@ -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,

	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)