* [PATCH] media: i2c: ov5645: Fix power up sequence
@ 2019-07-03 13:10 Ezequiel Garcia
2019-07-04 1:26 ` Fabio Estevam
2019-07-04 9:34 ` Philipp Zabel
0 siblings, 2 replies; 4+ messages in thread
From: Ezequiel Garcia @ 2019-07-03 13:10 UTC (permalink / raw)
To: Hans Verkuil, Sakari Ailus
Cc: kernel, Fabio Estevam, linux-media, Todor Tomov, Ezequiel Garcia
This is mostly a port of Jacopo's fix:
commit aa4bb8b8838ffcc776a79f49a4d7476b82405349
Author: Jacopo Mondi <jacopo@jmondi.org>
Date: Fri Jul 6 05:51:52 2018 -0400
media: ov5640: Re-work MIPI startup sequence
In the OV5645 case, the changes are:
- Move OV5645_IO_MIPI_CTRL00 (0x300e) out of the initial setting blob.
- At set_power(1) time power up MIPI Tx/Rx and set data and clock lanes in
LP11 during 'sleep' and 'idle' with MIPI clock in non-continuous mode.
- At set_power(0) time power down MIPI Tx/Rx (in addition to the current
power down of regulators and clock gating).
- At s_stream time enable/disable the MIPI interface output.
With this commit the sensor is able to enter LP-11 mode during power up,
as expected by some CSI-2 controllers.
Many thanks to Fabio Estevam for his help debugging this issue.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
drivers/media/i2c/ov5645.c | 34 +++++++++++++++++++++++++++++++---
1 file changed, 31 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c
index 124c8df04633..05430a81c977 100644
--- a/drivers/media/i2c/ov5645.c
+++ b/drivers/media/i2c/ov5645.c
@@ -45,6 +45,8 @@
#define OV5645_CHIP_ID_HIGH_BYTE 0x56
#define OV5645_CHIP_ID_LOW 0x300b
#define OV5645_CHIP_ID_LOW_BYTE 0x45
+#define OV5645_IO_MIPI_CTRL00 0x300e
+#define OV5645_PAD_OUTPUT00 0x3019
#define OV5645_AWB_MANUAL_CONTROL 0x3406
#define OV5645_AWB_MANUAL_ENABLE BIT(0)
#define OV5645_AEC_PK_MANUAL 0x3503
@@ -55,6 +57,7 @@
#define OV5645_ISP_VFLIP BIT(2)
#define OV5645_TIMING_TC_REG21 0x3821
#define OV5645_SENSOR_MIRROR BIT(1)
+#define OV5645_MIPI_CTRL00 0x4800
#define OV5645_PRE_ISP_TEST_SETTING_1 0x503d
#define OV5645_TEST_PATTERN_MASK 0x3
#define OV5645_SET_TEST_PATTERN(x) ((x) & OV5645_TEST_PATTERN_MASK)
@@ -121,7 +124,6 @@ static const struct reg_value ov5645_global_init_setting[] = {
{ 0x3503, 0x07 },
{ 0x3002, 0x1c },
{ 0x3006, 0xc3 },
- { 0x300e, 0x45 },
{ 0x3017, 0x00 },
{ 0x3018, 0x00 },
{ 0x302e, 0x0b },
@@ -737,13 +739,30 @@ static int ov5645_s_power(struct v4l2_subdev *sd, int on)
goto exit;
}
- ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
- OV5645_SYSTEM_CTRL0_STOP);
+ ret = ov5645_write_reg(ov5645,
+ OV5645_IO_MIPI_CTRL00, 0x40);
if (ret < 0) {
ov5645_set_power_off(ov5645);
goto exit;
}
+
+ ret = ov5645_write_reg(ov5645,
+ OV5645_MIPI_CTRL00, 0x24);
+ if (ret < 0) {
+ ov5645_set_power_off(ov5645);
+ goto exit;
+ }
+
+ ret = ov5645_write_reg(ov5645,
+ OV5645_PAD_OUTPUT00, 0x70);
+ if (ret < 0) {
+ ov5645_set_power_off(ov5645);
+ goto exit;
+ }
+
+ usleep_range(500, 1000);
} else {
+ ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x58);
ov5645_set_power_off(ov5645);
}
}
@@ -1049,11 +1068,20 @@ static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
dev_err(ov5645->dev, "could not sync v4l2 controls\n");
return ret;
}
+
+ ret = ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x45);
+ if (ret < 0)
+ return ret;
+
ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
OV5645_SYSTEM_CTRL0_START);
if (ret < 0)
return ret;
} else {
+ ret = ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x40);
+ if (ret < 0)
+ return ret;
+
ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
OV5645_SYSTEM_CTRL0_STOP);
if (ret < 0)
--
2.20.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] media: i2c: ov5645: Fix power up sequence
2019-07-03 13:10 [PATCH] media: i2c: ov5645: Fix power up sequence Ezequiel Garcia
@ 2019-07-04 1:26 ` Fabio Estevam
2019-07-04 9:34 ` Philipp Zabel
1 sibling, 0 replies; 4+ messages in thread
From: Fabio Estevam @ 2019-07-04 1:26 UTC (permalink / raw)
To: Ezequiel Garcia
Cc: Hans Verkuil, Sakari Ailus, kernel, linux-media, Todor Tomov
Hi Ezequiel,
On Wed, Jul 3, 2019 at 10:10 AM Ezequiel Garcia <ezequiel@collabora.com> wrote:
>
> This is mostly a port of Jacopo's fix:
>
> commit aa4bb8b8838ffcc776a79f49a4d7476b82405349
> Author: Jacopo Mondi <jacopo@jmondi.org>
> Date: Fri Jul 6 05:51:52 2018 -0400
>
> media: ov5640: Re-work MIPI startup sequence
>
> In the OV5645 case, the changes are:
>
> - Move OV5645_IO_MIPI_CTRL00 (0x300e) out of the initial setting blob.
> - At set_power(1) time power up MIPI Tx/Rx and set data and clock lanes in
> LP11 during 'sleep' and 'idle' with MIPI clock in non-continuous mode.
> - At set_power(0) time power down MIPI Tx/Rx (in addition to the current
> power down of regulators and clock gating).
> - At s_stream time enable/disable the MIPI interface output.
>
> With this commit the sensor is able to enter LP-11 mode during power up,
> as expected by some CSI-2 controllers.
>
> Many thanks to Fabio Estevam for his help debugging this issue.
>
> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
With this patch the applied the OV5645 camera successfully enters in
LP-11 and the imx6 capture driver does not complain anymore.
Tested-by: Fabio Estevam <festevam@gmail.com>
Thanks!
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] media: i2c: ov5645: Fix power up sequence
2019-07-03 13:10 [PATCH] media: i2c: ov5645: Fix power up sequence Ezequiel Garcia
2019-07-04 1:26 ` Fabio Estevam
@ 2019-07-04 9:34 ` Philipp Zabel
2019-07-04 11:31 ` Fabio Estevam
1 sibling, 1 reply; 4+ messages in thread
From: Philipp Zabel @ 2019-07-04 9:34 UTC (permalink / raw)
To: Ezequiel Garcia, Hans Verkuil, Sakari Ailus
Cc: kernel, Fabio Estevam, linux-media, Todor Tomov
Hi Ezequiel,
On Wed, 2019-07-03 at 10:10 -0300, Ezequiel Garcia wrote:
> This is mostly a port of Jacopo's fix:
>
> commit aa4bb8b8838ffcc776a79f49a4d7476b82405349
> Author: Jacopo Mondi <jacopo@jmondi.org>
> Date: Fri Jul 6 05:51:52 2018 -0400
>
> media: ov5640: Re-work MIPI startup sequence
>
> In the OV5645 case, the changes are:
>
> - Move OV5645_IO_MIPI_CTRL00 (0x300e) out of the initial setting blob.
> - At set_power(1) time power up MIPI Tx/Rx and set data and clock lanes in
> LP11 during 'sleep' and 'idle' with MIPI clock in non-continuous mode.
> - At set_power(0) time power down MIPI Tx/Rx (in addition to the current
> power down of regulators and clock gating).
> - At s_stream time enable/disable the MIPI interface output.
>
> With this commit the sensor is able to enter LP-11 mode during power up,
> as expected by some CSI-2 controllers.
>
> Many thanks to Fabio Estevam for his help debugging this issue.
>
> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
> ---
> drivers/media/i2c/ov5645.c | 34 +++++++++++++++++++++++++++++++---
> 1 file changed, 31 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c
> index 124c8df04633..05430a81c977 100644
> --- a/drivers/media/i2c/ov5645.c
> +++ b/drivers/media/i2c/ov5645.c
> @@ -45,6 +45,8 @@
> #define OV5645_CHIP_ID_HIGH_BYTE 0x56
> #define OV5645_CHIP_ID_LOW 0x300b
> #define OV5645_CHIP_ID_LOW_BYTE 0x45
> +#define OV5645_IO_MIPI_CTRL00 0x300e
> +#define OV5645_PAD_OUTPUT00 0x3019
> #define OV5645_AWB_MANUAL_CONTROL 0x3406
> #define OV5645_AWB_MANUAL_ENABLE BIT(0)
> #define OV5645_AEC_PK_MANUAL 0x3503
> @@ -55,6 +57,7 @@
> #define OV5645_ISP_VFLIP BIT(2)
> #define OV5645_TIMING_TC_REG21 0x3821
> #define OV5645_SENSOR_MIRROR BIT(1)
> +#define OV5645_MIPI_CTRL00 0x4800
> #define OV5645_PRE_ISP_TEST_SETTING_1 0x503d
> #define OV5645_TEST_PATTERN_MASK 0x3
> #define OV5645_SET_TEST_PATTERN(x) ((x) & OV5645_TEST_PATTERN_MASK)
> @@ -121,7 +124,6 @@ static const struct reg_value ov5645_global_init_setting[] = {
> { 0x3503, 0x07 },
> { 0x3002, 0x1c },
> { 0x3006, 0xc3 },
> - { 0x300e, 0x45 },
> { 0x3017, 0x00 },
> { 0x3018, 0x00 },
> { 0x302e, 0x0b },
> @@ -737,13 +739,30 @@ static int ov5645_s_power(struct v4l2_subdev *sd, int on)
> goto exit;
> }
>
> - ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
> - OV5645_SYSTEM_CTRL0_STOP);
> + ret = ov5645_write_reg(ov5645,
> + OV5645_IO_MIPI_CTRL00, 0x40);
> if (ret < 0) {
> ov5645_set_power_off(ov5645);
> goto exit;
> }
> +
> + ret = ov5645_write_reg(ov5645,
> + OV5645_MIPI_CTRL00, 0x24);
> + if (ret < 0) {
> + ov5645_set_power_off(ov5645);
> + goto exit;
> + }
> +
> + ret = ov5645_write_reg(ov5645,
> + OV5645_PAD_OUTPUT00, 0x70);
> + if (ret < 0) {
> + ov5645_set_power_off(ov5645);
> + goto exit;
> + }
Could this just be added to the end of ov5645_global_init_setting?
----------8<----------
diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c
index 05430a81c977..d978f7aa44c3 100644
--- a/drivers/media/i2c/ov5645.c
+++ b/drivers/media/i2c/ov5645.c
@@ -352,7 +352,10 @@ static const struct reg_value ov5645_global_init_setting[] = {
{ 0x3a1f, 0x14 },
{ 0x0601, 0x02 },
{ 0x3008, 0x42 },
- { 0x3008, 0x02 }
+ { 0x3008, 0x02 },
+ { OV5645_IO_MIPI_CTRL00, 0x40 },
+ { OV5645_MIPI_CTRL00, 0x24 },
+ { OV5645_PAD_OUTPUT00, 0x70 }
};
static const struct reg_value ov5645_setting_sxga[] = {
@@ -739,27 +742,6 @@ static int ov5645_s_power(struct v4l2_subdev *sd, int on)
goto exit;
}
- ret = ov5645_write_reg(ov5645,
- OV5645_IO_MIPI_CTRL00, 0x40);
- if (ret < 0) {
- ov5645_set_power_off(ov5645);
- goto exit;
- }
-
- ret = ov5645_write_reg(ov5645,
- OV5645_MIPI_CTRL00, 0x24);
- if (ret < 0) {
- ov5645_set_power_off(ov5645);
- goto exit;
- }
-
- ret = ov5645_write_reg(ov5645,
- OV5645_PAD_OUTPUT00, 0x70);
- if (ret < 0) {
- ov5645_set_power_off(ov5645);
- goto exit;
- }
-
usleep_range(500, 1000);
} else {
ov5645_write_reg(ov5645, OV5645_IO_MIPI_CTRL00, 0x58);
---------->8----------
regards
Philipp
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] media: i2c: ov5645: Fix power up sequence
2019-07-04 9:34 ` Philipp Zabel
@ 2019-07-04 11:31 ` Fabio Estevam
0 siblings, 0 replies; 4+ messages in thread
From: Fabio Estevam @ 2019-07-04 11:31 UTC (permalink / raw)
To: Philipp Zabel
Cc: Ezequiel Garcia, Hans Verkuil, Sakari Ailus, kernel, linux-media,
Todor Tomov
Hi Philipp,
On Thu, Jul 4, 2019 at 6:34 AM Philipp Zabel <p.zabel@pengutronix.de> wrote:
> Could this just be added to the end of ov5645_global_init_setting?
Just tested your suggestion and it also works.
Thanks
^ permalink raw reply [flat|nested] 4+ messages in thread
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2019-07-03 13:10 [PATCH] media: i2c: ov5645: Fix power up sequence Ezequiel Garcia
2019-07-04 1:26 ` Fabio Estevam
2019-07-04 9:34 ` Philipp Zabel
2019-07-04 11:31 ` Fabio Estevam
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