[PATCH v2 24/26] drm/rockchip: dw-mipi-dsi: support non-burst modes

From: John Keeping
Date: Sat Jan 21 2017 - 11:32:35 EST


Signed-off-by: John Keeping <john@xxxxxxxxxxxx>
---
Unchanged in v2
---
drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
index 2dafb17e31d2..881bb0c62ca5 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
@@ -82,6 +82,7 @@
#define FRAME_BTA_ACK BIT(14)
#define ENABLE_LOW_POWER (0x3f << 8)
#define ENABLE_LOW_POWER_MASK (0x3f << 8)
+#define VID_MODE_TYPE_NON_BURST_SYNC_EVENTS 0x1
#define VID_MODE_TYPE_BURST_SYNC_PULSES 0x2
#define VID_MODE_TYPE_MASK 0x3

@@ -286,6 +287,7 @@ struct dw_mipi_dsi {
u32 format;
u16 input_div;
u16 feedback_div;
+ unsigned long mode_flags;

const struct dw_mipi_dsi_plat_data *pdata;
};
@@ -548,15 +550,10 @@ static int dw_mipi_dsi_host_attach(struct mipi_dsi_host *host,
return -EINVAL;
}

- if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) ||
- !(device->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)) {
- dev_err(dsi->dev, "device mode is unsupported\n");
- return -EINVAL;
- }
-
dsi->lanes = device->lanes;
dsi->channel = device->channel;
dsi->format = device->format;
+ dsi->mode_flags = device->mode_flags;
dsi->panel = of_drm_find_panel(device->dev.of_node);
if (dsi->panel)
return drm_panel_attach(dsi->panel, &dsi->connector);
@@ -713,7 +710,12 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
{
u32 val;

- val = VID_MODE_TYPE_BURST_SYNC_PULSES | ENABLE_LOW_POWER;
+ val = ENABLE_LOW_POWER;
+
+ if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
+ val |= VID_MODE_TYPE_BURST_SYNC_PULSES;
+ else if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE))
+ val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;

dsi_write(dsi, DSI_VID_MODE_CFG, val);
}
--
2.11.0.197.gb556de5.dirty