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ANDROID: drivers: gpu: drm: add support to batch commands

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MSM DSI framework has capability to batch commands and
do kickoff once MIPI_DSI_MSG_LASTCOMMAND flag is set. This enables
related commands to be grouped and sent in one dma kickoff.

Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: I2742c62a90e9a194848a612eef40a22103bb6596
This commit is contained in:
Shashank Babu Chinta Venkata
2019-11-19 14:02:09 -08:00
committed by Alistair Delva
parent ef8eec5d3c
commit c2392efab3
2 changed files with 3 additions and 0 deletions
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1
drivers/gpu/drm/drm_mipi_dsi.c
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@@ -360,6 +360,7 @@ static ssize_t mipi_dsi_device_transfer(struct mipi_dsi_device *dsi,
if (dsi->mode_flags & MIPI_DSI_MODE_LPM)
msg->flags |= MIPI_DSI_MSG_USE_LPM;
msg->flags |= MIPI_DSI_MSG_LASTCOMMAND;
return ops->transfer(dsi->host, msg);
}

2
include/drm/drm_mipi_dsi.h
View File

@@ -23,6 +23,8 @@ struct mipi_dsi_device;
#define MIPI_DSI_MSG_USE_LPM BIT(1)
/* read mipi_dsi_msg.ctrl and unicast to only that ctrls */
#define MIPI_DSI_MSG_UNICAST BIT(2)
/* Stack all commands until lastcommand bit and trigger all in one go */
#define MIPI_DSI_MSG_LASTCOMMAND BIT(3)
/**
* struct mipi_dsi_msg - read/write DSI buffer