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2e715fb4fc
Add support for BCM2712 (Raspberry Pi 5).
3bb5880ab3
Patches were generated from the diff between linux kernel branch linux-6.1.y
and rpi-6.1.y from raspberry pi kernel source:
- git format-patch linux-6.1.y...rpi-6.1.y
Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2710/RPi3B, bcm2711/RPi4B
Signed-off-by: Marty Jones <mj8263788@gmail.com>
[Remove applied and reverted patches, squash patches and config commits]
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
147 lines
4.8 KiB
Diff
147 lines
4.8 KiB
Diff
From 425a6b752c38b50c97220db37a67b18b281f56e5 Mon Sep 17 00:00:00 2001
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From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
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Date: Thu, 21 Sep 2023 15:28:20 +0300
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Subject: [PATCH] media: rp1: csi2: Use get_frame_desc to get CSI-2 VC and DT
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Use get_frame_desc pad op for asking the CSI-2 VC and DT from the source
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device driver, instead of hardcoding to VC 0, and getting the DT from a
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formats table. To keep backward compatibility with sources that do not
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implement get_frame_desc, implement a fallback mechanism that always
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uses VC 0, and gets the DT from the formats table, based on the CSI2's
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sink pad's format.
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Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
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---
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.../media/platform/raspberrypi/rp1_cfe/cfe.c | 4 +-
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.../media/platform/raspberrypi/rp1_cfe/csi2.c | 75 ++++++++++++++++++-
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.../media/platform/raspberrypi/rp1_cfe/csi2.h | 2 +-
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3 files changed, 77 insertions(+), 4 deletions(-)
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--- a/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
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+++ b/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
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@@ -838,7 +838,7 @@ static void cfe_start_channel(struct cfe
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* this is handled by the CSI2 AUTO_ARM mode.
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*/
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csi2_start_channel(&cfe->csi2, cfe->fe_csi2_channel,
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- fmt->csi_dt, CSI2_MODE_FE_STREAMING,
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+ CSI2_MODE_FE_STREAMING,
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true, false, width, height);
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csi2_set_buffer(&cfe->csi2, cfe->fe_csi2_channel, 0, 0, -1);
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pisp_fe_start(&cfe->fe);
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@@ -872,7 +872,7 @@ static void cfe_start_channel(struct cfe
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}
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}
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/* Unconditionally start this CSI2 channel. */
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- csi2_start_channel(&cfe->csi2, node->id, fmt->csi_dt,
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+ csi2_start_channel(&cfe->csi2, node->id,
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mode,
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/* Auto arm */
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false,
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--- a/drivers/media/platform/raspberrypi/rp1_cfe/csi2.c
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+++ b/drivers/media/platform/raspberrypi/rp1_cfe/csi2.c
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@@ -324,12 +324,84 @@ void csi2_set_compression(struct csi2_de
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csi2_reg_write(csi2, CSI2_CH_COMP_CTRL(channel), compression);
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}
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+static int csi2_get_vc_dt_fallback(struct csi2_device *csi2,
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+ unsigned int channel, u8 *vc, u8 *dt)
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+{
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+ struct v4l2_subdev *sd = &csi2->sd;
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+ struct v4l2_subdev_state *state;
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+ struct v4l2_mbus_framefmt *fmt;
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+ const struct cfe_fmt *cfe_fmt;
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+
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+ state = v4l2_subdev_get_locked_active_state(sd);
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+
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+ /* Without Streams API, the channel number matches the sink pad */
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+ fmt = v4l2_subdev_get_pad_format(sd, state, channel);
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+ if (!fmt)
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+ return -EINVAL;
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+
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+ cfe_fmt = find_format_by_code(fmt->code);
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+ if (!cfe_fmt)
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+ return -EINVAL;
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+
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+ *vc = 0;
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+ *dt = cfe_fmt->csi_dt;
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+
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+ return 0;
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+}
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+
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+static int csi2_get_vc_dt(struct csi2_device *csi2, unsigned int channel,
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+ u8 *vc, u8 *dt)
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+{
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+ struct v4l2_mbus_frame_desc remote_desc;
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+ const struct media_pad *remote_pad;
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+ struct v4l2_subdev *source_sd;
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+ int ret;
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+
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+ /* Without Streams API, the channel number matches the sink pad */
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+ remote_pad = media_pad_remote_pad_first(&csi2->pad[channel]);
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+ if (!remote_pad)
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+ return -EPIPE;
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+
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+ source_sd = media_entity_to_v4l2_subdev(remote_pad->entity);
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+
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+ ret = v4l2_subdev_call(source_sd, pad, get_frame_desc,
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+ remote_pad->index, &remote_desc);
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+ if (ret == -ENOIOCTLCMD) {
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+ csi2_dbg("source does not support get_frame_desc, use fallback\n");
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+ return csi2_get_vc_dt_fallback(csi2, channel, vc, dt);
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+ } else if (ret) {
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+ csi2_err("Failed to get frame descriptor\n");
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+ return ret;
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+ }
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+
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+ if (remote_desc.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2) {
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+ csi2_err("Frame descriptor does not describe CSI-2 link");
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+ return -EINVAL;
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+ }
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+
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+ if (remote_desc.num_entries != 1) {
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+ csi2_err("Frame descriptor does not have a single entry");
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+ return -EINVAL;
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+ }
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+
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+ *vc = remote_desc.entry[0].bus.csi2.vc;
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+ *dt = remote_desc.entry[0].bus.csi2.dt;
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+
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+ return 0;
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+}
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+
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void csi2_start_channel(struct csi2_device *csi2, unsigned int channel,
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- u16 dt, enum csi2_mode mode, bool auto_arm,
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+ enum csi2_mode mode, bool auto_arm,
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bool pack_bytes, unsigned int width,
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unsigned int height)
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{
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u32 ctrl;
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+ int ret;
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+ u8 vc, dt;
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+
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+ ret = csi2_get_vc_dt(csi2, channel, &vc, &dt);
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+ if (ret)
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+ return;
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csi2_dbg("%s [%u]\n", __func__, channel);
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@@ -369,6 +441,7 @@ void csi2_start_channel(struct csi2_devi
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csi2_reg_write(csi2, CSI2_CH_FRAME_SIZE(channel), 0);
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}
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+ set_field(&ctrl, vc, VC_MASK);
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set_field(&ctrl, dt, DT_MASK);
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csi2_reg_write(csi2, CSI2_CH_CTRL(channel), ctrl);
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csi2->num_lines[channel] = height;
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--- a/drivers/media/platform/raspberrypi/rp1_cfe/csi2.h
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+++ b/drivers/media/platform/raspberrypi/rp1_cfe/csi2.h
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@@ -79,7 +79,7 @@ void csi2_set_compression(struct csi2_de
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enum csi2_compression_mode mode, unsigned int shift,
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unsigned int offset);
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void csi2_start_channel(struct csi2_device *csi2, unsigned int channel,
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- u16 dt, enum csi2_mode mode, bool auto_arm,
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+ enum csi2_mode mode, bool auto_arm,
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bool pack_bytes, unsigned int width,
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unsigned int height);
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void csi2_stop_channel(struct csi2_device *csi2, unsigned int channel);
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