From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
To: Jacopo Mondi <jacopo+renesas@jmondi.org>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Steve Longerbeam <slongerbeam@gmail.com>,
Paul <paul.kocialkowski@bootlin.com>,
Hugues Fruchet <hugues.fruchet@st.com>
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-renesas-soc@vger.kernel.org,
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
Biju Das <biju.das.jz@bp.renesas.com>,
Prabhakar <prabhakar.csengg@gmail.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>
Subject: [PATCH v4 1/6] media: i2c: ov5640: Remain in power down for DVP mode unless streaming
Date: Fri, 4 Sep 2020 21:18:30 +0100 [thread overview]
Message-ID: <20200904201835.5958-2-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw)
In-Reply-To: <20200904201835.5958-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
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>
---
drivers/media/i2c/ov5640.c | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 2fe4a7ac0592..880fde73a030 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -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)
--
2.17.1
next prev parent reply other threads:[~2020-09-04 20:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-04 20:18 [PATCH v4 0/6] media: i2c: ov5640 feature enhancement and fixes Lad Prabhakar
2020-09-04 20:18 ` Lad Prabhakar [this message]
2020-09-09 16:16 ` [PATCH v4 1/6] media: i2c: ov5640: Remain in power down for DVP mode unless streaming Hugues FRUCHET
2021-06-29 10:47 ` Eugen.Hristev
2021-12-21 7:37 ` Eugen.Hristev
2021-12-21 12:06 ` Sakari Ailus
2021-12-21 14:47 ` Lad, Prabhakar
2021-12-21 15:01 ` Eugen.Hristev
2021-12-21 15:11 ` Lad, Prabhakar
2022-01-03 11:29 ` Eugen.Hristev
2022-01-04 9:57 ` Lad, Prabhakar
2022-01-07 15:49 ` Lad, Prabhakar
2020-09-04 20:18 ` [PATCH v4 2/6] media: i2c: ov5640: Separate out mipi configuration from s_power Lad Prabhakar
2020-09-04 20:18 ` [PATCH v4 3/6] media: i2c: ov5640: Enable data pins on poweron for DVP mode Lad Prabhakar
2020-09-07 9:44 ` Hugues FRUCHET
2020-09-07 14:35 ` Lad, Prabhakar
2020-09-09 15:48 ` Hugues FRUCHET
2020-09-04 20:18 ` [PATCH v4 4/6] media: i2c: ov5640: Configure HVP lines in s_power callback Lad Prabhakar
2020-09-04 20:18 ` [PATCH v4 5/6] media: i2c: ov5640: Add support for BT656 mode Lad Prabhakar
2020-09-04 20:18 ` [PATCH v4 6/6] media: i2c: ov5640: Fail probe on unsupported bus_type Lad Prabhakar
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