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Date: Fri, 4 Sep 2020 21:18:33 +0100
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To: Jacopo Mondi <jacopo+renesas@...ndi.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Steve Longerbeam <slongerbeam@...il.com>,
Paul <paul.kocialkowski@...tlin.com>,
Hugues Fruchet <hugues.fruchet@...com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-renesas-soc@...r.kernel.org,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
Biju Das <biju.das.jz@...renesas.com>,
Prabhakar <prabhakar.csengg@...il.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>
Subject: [PATCH v4 4/6] media: i2c: ov5640: Configure HVP lines in s_power callback
Configure HVP lines in s_power callback instead of configuring everytime
in ov5640_set_stream_dvp().
Alongside also disable MIPI in DVP mode.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
Tested-by: Jacopo Mondi <jacopo@...ndi.org>
---
drivers/media/i2c/ov5640.c | 123 +++++++++++++++++--------------------
1 file changed, 58 insertions(+), 65 deletions(-)
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 8288728d8704..6834ebc1995f 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -1217,71 +1217,6 @@ static int ov5640_set_autogain(struct ov5640_dev *sensor, bool on)
static int ov5640_set_stream_dvp(struct ov5640_dev *sensor, bool on)
{
- int ret;
- unsigned int flags = sensor->ep.bus.parallel.flags;
- u8 pclk_pol = 0;
- u8 hsync_pol = 0;
- u8 vsync_pol = 0;
-
- /*
- * Note about parallel port configuration.
- *
- * When configured in parallel mode, the OV5640 will
- * output 10 bits data on DVP data lines [9:0].
- * If only 8 bits data are wanted, the 8 bits data lines
- * of the camera interface must be physically connected
- * on the DVP data lines [9:2].
- *
- * Control lines polarity can be configured through
- * devicetree endpoint control lines properties.
- * If no endpoint control lines properties are set,
- * polarity will be as below:
- * - VSYNC: active high
- * - HREF: active low
- * - PCLK: active low
- */
-
- if (on) {
- /*
- * configure parallel port control lines polarity
- *
- * POLARITY CTRL0
- * - [5]: PCLK polarity (0: active low, 1: active high)
- * - [1]: HREF polarity (0: active low, 1: active high)
- * - [0]: VSYNC polarity (mismatch here between
- * datasheet and hardware, 0 is active high
- * and 1 is active low...)
- */
- if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
- pclk_pol = 1;
- if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
- hsync_pol = 1;
- if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
- vsync_pol = 1;
-
- ret = ov5640_write_reg(sensor,
- OV5640_REG_POLARITY_CTRL00,
- (pclk_pol << 5) |
- (hsync_pol << 1) |
- vsync_pol);
-
- if (ret)
- return ret;
- }
-
- /*
- * powerdown MIPI TX/RX PHY & disable MIPI
- *
- * MIPI CONTROL 00
- * 4: PWDN PHY TX
- * 3: PWDN PHY RX
- * 2: MIPI enable
- */
- ret = ov5640_write_reg(sensor,
- OV5640_REG_IO_MIPI_CTRL00, on ? 0x18 : 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);
@@ -2043,15 +1978,73 @@ static int ov5640_set_power_mipi(struct ov5640_dev *sensor, bool on)
static int ov5640_set_power_dvp(struct ov5640_dev *sensor, bool on)
{
+ unsigned int flags = sensor->ep.bus.parallel.flags;
+ u8 pclk_pol = 0;
+ u8 hsync_pol = 0;
+ u8 vsync_pol = 0;
int ret;
if (!on) {
/* Reset settings to their default values. */
+ ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x58);
+ ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00, 0x20);
ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE01, 0x00);
ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02, 0x00);
return 0;
}
+ /*
+ * Note about parallel port configuration.
+ *
+ * When configured in parallel mode, the OV5640 will
+ * output 10 bits data on DVP data lines [9:0].
+ * If only 8 bits data are wanted, the 8 bits data lines
+ * of the camera interface must be physically connected
+ * on the DVP data lines [9:2].
+ *
+ * Control lines polarity can be configured through
+ * devicetree endpoint control lines properties.
+ * If no endpoint control lines properties are set,
+ * polarity will be as below:
+ * - VSYNC: active high
+ * - HREF: active low
+ * - PCLK: active low
+ */
+ /*
+ * configure parallel port control lines polarity
+ *
+ * POLARITY CTRL0
+ * - [5]: PCLK polarity (0: active low, 1: active high)
+ * - [1]: HREF polarity (0: active low, 1: active high)
+ * - [0]: VSYNC polarity (mismatch here between
+ * datasheet and hardware, 0 is active high
+ * and 1 is active low...)
+ */
+ if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
+ pclk_pol = 1;
+ if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
+ hsync_pol = 1;
+ if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
+ vsync_pol = 1;
+
+ ret = ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00,
+ (pclk_pol << 5) | (hsync_pol << 1) | vsync_pol);
+
+ if (ret)
+ return ret;
+
+ /*
+ * powerdown MIPI TX/RX PHY & disable MIPI
+ *
+ * MIPI CONTROL 00
+ * 4: PWDN PHY TX
+ * 3: PWDN PHY RX
+ * 2: MIPI enable
+ */
+ ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x18);
+ if (ret)
+ return ret;
+
/*
* enable VSYNC/HREF/PCLK DVP control lines
* & D[9:6] DVP data lines
--
2.17.1
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