Configure CSI-2 phy based on platform data in the ISP driver rather than in
platform code.
Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi>
---
drivers/media/video/omap3isp/isp.h | 3 -
drivers/media/video/omap3isp/ispcsiphy.c | 95 ++++++++++++++++++++++++++---
drivers/media/video/omap3isp/ispcsiphy.h | 4 +
drivers/media/video/omap3isp/ispvideo.c | 19 ++++++
4 files changed, 108 insertions(+), 13 deletions(-)
diff --git a/drivers/media/video/omap3isp/isp.h
b/drivers/media/video/omap3isp/isp.h
index 705946e..c5935ae 100644
--- a/drivers/media/video/omap3isp/isp.h
+++ b/drivers/media/video/omap3isp/isp.h
@@ -126,9 +126,6 @@ struct isp_reg {
struct isp_platform_callback {
u32 (*set_xclk)(struct isp_device *isp, u32 xclk, u8 xclksel);
- int (*csiphy_config)(struct isp_csiphy *phy,
- struct isp_csiphy_dphy_cfg *dphy,
- struct isp_csiphy_lanes_cfg *lanes);
void (*set_pixel_clock)(struct isp_device *isp, unsigned int pixelclk);
};
diff --git a/drivers/media/video/omap3isp/ispcsiphy.c
b/drivers/media/video/omap3isp/ispcsiphy.c
index 5be37ce..52af308 100644
--- a/drivers/media/video/omap3isp/ispcsiphy.c
+++ b/drivers/media/video/omap3isp/ispcsiphy.c
@@ -28,6 +28,8 @@
#include <linux/device.h>
#include <linux/regulator/consumer.h>
+#include "../../../../arch/arm/mach-omap2/control.h"
+
#include "isp.h"
#include "ispreg.h"
#include "ispcsiphy.h"
@@ -138,15 +140,90 @@ static void csiphy_dphy_config(struct isp_csiphy *phy)
isp_reg_writel(phy->isp, reg, phy->phy_regs, ISPCSIPHY_REG1);
}
-static int csiphy_config(struct isp_csiphy *phy,
- struct isp_csiphy_dphy_cfg *dphy,
- struct isp_csiphy_lanes_cfg *lanes)
+/*
+ * THS_TERM: Programmed value = ceil(12.5 ns/DDRClk period) - 1.
+ * THS_SETTLE: Programmed value = ceil(90 ns/DDRClk period) + 3.
+ */
+#define THS_TERM_D 2000000
+#define THS_TERM(ddrclk_khz) \
+( \
+ ((25 * (ddrclk_khz)) % THS_TERM_D) ? \
+ ((25 * (ddrclk_khz)) / THS_TERM_D) : \
+ ((25 * (ddrclk_khz)) / THS_TERM_D) - 1 \
+)
+
+#define THS_SETTLE_D 1000000
+#define THS_SETTLE(ddrclk_khz) \
+( \
+ ((90 * (ddrclk_khz)) % THS_SETTLE_D) ? \
+ ((90 * (ddrclk_khz)) / THS_SETTLE_D) + 4 : \
+ ((90 * (ddrclk_khz)) / THS_SETTLE_D) + 3 \
+)
+
+/*
+ * TCLK values are OK at their reset values
+ */
+#define TCLK_TERM 0
+#define TCLK_MISS 1
+#define TCLK_SETTLE 14
+
+int omap3isp_csiphy_config(struct isp_device *isp,
+ struct v4l2_subdev *csi2_subdev,
+ struct v4l2_subdev *sensor,
+ struct v4l2_mbus_framefmt *sensor_fmt)
{
+ struct isp_v4l2_subdevs_group *subdevs = sensor->host_priv;
+ struct isp_csi2_device *csi2 = v4l2_get_subdevdata(csi2_subdev);
+ struct isp_csiphy_dphy_cfg csi2phy;
+ int csi2_ddrclk_khz;
+ struct isp_csiphy_lanes_cfg *lanes;
unsigned int used_lanes = 0;
unsigned int i;
+ u32 cam_phy_ctrl;
+
+ if (subdevs->interface == ISP_INTERFACE_CCP2B_PHY1
+ || subdevs->interface == ISP_INTERFACE_CCP2B_PHY2)
+ lanes = subdevs->bus.ccp2.lanecfg;
+ else
+ lanes = subdevs->bus.csi2.lanecfg;
+
+ if (!lanes) {
+ dev_err(isp->dev, "no lane configuration\n");
+ return -EINVAL;
+ }
+
+ cam_phy_ctrl = omap_readl(
+ OMAP343X_CTRL_BASE + OMAP3630_CONTROL_CAMERA_PHY_CTRL);
+ /*
+ * SCM.CONTROL_CAMERA_PHY_CTRL
+ * - bit[4] : CSIPHY1 data sent to CSIB
+ * - bit [3:2] : CSIPHY1 config: 00 d-phy, 01/10 ccp2
+ * - bit [1:0] : CSIPHY2 config: 00 d-phy, 01/10 ccp2
+ */
+ if (subdevs->interface == ISP_INTERFACE_CCP2B_PHY1)
+ cam_phy_ctrl |= 1 << 2;
+ else if (subdevs->interface == ISP_INTERFACE_CSI2C_PHY1)
+ cam_phy_ctrl &= 1 << 2;
+
+ if (subdevs->interface == ISP_INTERFACE_CCP2B_PHY2)
+ cam_phy_ctrl |= 1;
+ else if (subdevs->interface == ISP_INTERFACE_CSI2A_PHY2)
+ cam_phy_ctrl &= 1;
+
+ omap_writel(cam_phy_ctrl,
+ OMAP343X_CTRL_BASE + OMAP3630_CONTROL_CAMERA_PHY_CTRL);
+
+ csi2_ddrclk_khz = sensor_fmt->pixel_clock
+ / (2 * csi2->phy->num_data_lanes)
+ * omap3isp_video_format_info(sensor_fmt->code)->bpp;
+ csi2phy.ths_term = THS_TERM(csi2_ddrclk_khz);
+ csi2phy.ths_settle = THS_SETTLE(csi2_ddrclk_khz);
+ csi2phy.tclk_term = TCLK_TERM;
+ csi2phy.tclk_miss = TCLK_MISS;
+ csi2phy.tclk_settle = TCLK_SETTLE;
/* Clock and data lanes verification */
- for (i = 0; i < phy->num_data_lanes; i++) {
+ for (i = 0; i < csi2->phy->num_data_lanes; i++) {
if (lanes->data[i].pol > 1 || lanes->data[i].pos > 3)
return -EINVAL;
@@ -162,10 +239,10 @@ static int csiphy_config(struct isp_csiphy *phy,
if (lanes->clk.pos == 0 || used_lanes & (1 << lanes->clk.pos))
return -EINVAL;
- mutex_lock(&phy->mutex);
- phy->dphy = *dphy;
- phy->lanes = *lanes;
- mutex_unlock(&phy->mutex);
+ mutex_lock(&csi2->phy->mutex);
+ csi2->phy->dphy = csi2phy;
+ csi2->phy->lanes = *lanes;
+ mutex_unlock(&csi2->phy->mutex);
return 0;
}
@@ -225,8 +302,6 @@ int omap3isp_csiphy_init(struct isp_device *isp)
struct isp_csiphy *phy1 = &isp->isp_csiphy1;
struct isp_csiphy *phy2 = &isp->isp_csiphy2;
- isp->platform_cb.csiphy_config = csiphy_config;
-
phy2->isp = isp;
phy2->csi2 = &isp->isp_csi2a;
phy2->num_data_lanes = ISP_CSIPHY2_NUM_DATA_LANES;
diff --git a/drivers/media/video/omap3isp/ispcsiphy.h
b/drivers/media/video/omap3isp/ispcsiphy.h
index e93a661..9f93222 100644
--- a/drivers/media/video/omap3isp/ispcsiphy.h
+++ b/drivers/media/video/omap3isp/ispcsiphy.h
@@ -56,6 +56,10 @@ struct isp_csiphy {
struct isp_csiphy_dphy_cfg dphy;
};
+int omap3isp_csiphy_config(struct isp_device *isp,
+ struct v4l2_subdev *csi2_subdev,
+ struct v4l2_subdev *sensor,
+ struct v4l2_mbus_framefmt *fmt);
int omap3isp_csiphy_acquire(struct isp_csiphy *phy);
void omap3isp_csiphy_release(struct isp_csiphy *phy);
int omap3isp_csiphy_init(struct isp_device *isp);
diff --git a/drivers/media/video/omap3isp/ispvideo.c
b/drivers/media/video/omap3isp/ispvideo.c
index 17bc03c..cdcf1d0 100644
--- a/drivers/media/video/omap3isp/ispvideo.c
+++ b/drivers/media/video/omap3isp/ispvideo.c
@@ -299,6 +299,8 @@ static int isp_video_validate_pipeline(struct isp_pipeline
*pipe)
while (1) {
unsigned int shifter_link;
+ struct v4l2_subdev *_subdev;
+
/* Retrieve the sink format */
pad = &subdev->entity.pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
@@ -342,6 +344,7 @@ static int isp_video_validate_pipeline(struct isp_pipeline
*pipe)
if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
+ _subdev = subdev;
subdev = media_entity_to_v4l2_subdev(pad->entity);
fmt_source.pad = pad->index;
@@ -355,6 +358,22 @@ static int isp_video_validate_pipeline(struct isp_pipeline
*pipe)
fmt_source.format.height != fmt_sink.format.height)
return -EPIPE;
+ /* Configure CSI-2 receiver based on sensor format. */
+ if (_subdev == &isp->isp_csi2a.subdev
+ || _subdev == &isp->isp_csi2c.subdev) {
+ if (cpu_is_omap3630()) {
+ /*
+ * FIXME: CSI-2 is supported only on
+ * the 3630!
+ */
+ ret = omap3isp_csiphy_config(
+ isp, _subdev, subdev,
+ &fmt_source.format);
+ if (IS_ERR_VALUE(ret))
+ return -EPIPE;
+ }
+ }
+
if (subdev->host_priv) {
/*
* host_priv != NULL: this is a sensor. Issue
--
1.7.2.5
--
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