mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
75 lines
2.7 KiB
Diff
75 lines
2.7 KiB
Diff
From d318c95f164150bee4dbd875c3d9354665738f17 Mon Sep 17 00:00:00 2001
|
|
From: Philipp Zabel <p.zabel@pengutronix.de>
|
|
Date: Thu, 21 Sep 2017 17:30:24 +0200
|
|
Subject: [PATCH] media: tc358743: fix connected/active CSI-2 lane
|
|
reporting
|
|
|
|
g_mbus_config was supposed to indicate all supported lane numbers, not
|
|
only the number of those currently in active use. Since the TC358743
|
|
can dynamically reduce the number of active lanes if the required
|
|
bandwidth allows for it, report all lane numbers up to the connected
|
|
number of lanes as supported in pdata mode.
|
|
In device tree mode, do not report lane count and clock mode at all, as
|
|
the receiver driver can determine these from the device tree.
|
|
|
|
To allow communicating the number of currently active lanes, add a new
|
|
bitfield to the v4l2_mbus_config flags. This is a temporary fix, to be
|
|
used only until a better solution is found.
|
|
|
|
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
|
|
---
|
|
drivers/media/i2c/tc358743.c | 14 ++++++++++++--
|
|
include/media/v4l2-mediabus.h | 8 ++++++++
|
|
2 files changed, 20 insertions(+), 2 deletions(-)
|
|
|
|
--- a/drivers/media/i2c/tc358743.c
|
|
+++ b/drivers/media/i2c/tc358743.c
|
|
@@ -1608,11 +1608,20 @@ static int tc358743_g_mbus_config(struct
|
|
struct v4l2_mbus_config *cfg)
|
|
{
|
|
struct tc358743_state *state = to_state(sd);
|
|
+ const u32 mask = V4L2_MBUS_CSI2_LANE_MASK;
|
|
+
|
|
+ if (state->csi_lanes_in_use > state->bus.num_data_lanes)
|
|
+ return -EINVAL;
|
|
|
|
cfg->type = V4L2_MBUS_CSI2_DPHY;
|
|
+ cfg->flags = (state->csi_lanes_in_use << __ffs(mask)) & mask;
|
|
+
|
|
+ /* In DT mode, only report the number of active lanes */
|
|
+ if (sd->dev->of_node)
|
|
+ return 0;
|
|
|
|
- /* Support for non-continuous CSI-2 clock is missing in the driver */
|
|
- cfg->flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
|
|
+ /* Support for non-continuous CSI-2 clock is missing in pdate mode */
|
|
+ cfg->flags |= V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
|
|
|
|
switch (state->csi_lanes_in_use) {
|
|
case 1:
|
|
@@ -2054,6 +2063,7 @@ static int tc358743_probe(struct i2c_cli
|
|
if (pdata) {
|
|
state->pdata = *pdata;
|
|
state->bus.flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
|
|
+ state->bus.num_data_lanes = 4;
|
|
} else {
|
|
err = tc358743_probe_of(state);
|
|
if (err == -ENODEV)
|
|
--- a/include/media/v4l2-mediabus.h
|
|
+++ b/include/media/v4l2-mediabus.h
|
|
@@ -67,6 +67,14 @@
|
|
V4L2_MBUS_CSI2_CHANNEL_1 | \
|
|
V4L2_MBUS_CSI2_CHANNEL_2 | \
|
|
V4L2_MBUS_CSI2_CHANNEL_3)
|
|
+/*
|
|
+ * Number of lanes in use, 0 == use all available lanes (default)
|
|
+ *
|
|
+ * This is a temporary fix for devices that need to reduce the number of active
|
|
+ * lanes for certain modes, until g_mbus_config() can be replaced with a better
|
|
+ * solution.
|
|
+ */
|
|
+#define V4L2_MBUS_CSI2_LANE_MASK (0xf << 10)
|
|
|
|
/**
|
|
* enum v4l2_mbus_type - media bus type
|