samsung-sm8650/android_kernel_samsung_sm8650-modules
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disp: msm: dsi: batching multiple DSI commands using debugfs node

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The change batches DSI commands sent using the debugfs node, in a
separate buffer from the TX command buffer to ensure that they are not
triggered before the last command bit is set. Once the last command
bit is set the buffer is then copied to the DSI TX buffer and triggered.

Change-Id: I9ba624e4e19341696a974994817603315c6c8a45
Signed-off-by: Satya Rama Aditya Pinapala <psraditya30@codeaurora.org>
Cette révision appartient à :
Satya Rama Aditya Pinapala
2020-10-14 06:52:24 -07:00
Parent 3668566409
révision bbe18a1689
5 fichiers modifiés avec 103 ajouts et 20 suppressions
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26
msm/dsi/dsi_ctrl.c
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@@ -1352,7 +1352,8 @@ static void dsi_kickoff_msg_tx(struct dsi_ctrl *dsi_ctrl,
hw_flags |= (flags & DSI_CTRL_CMD_DEFER_TRIGGER) ?
DSI_CTRL_HW_CMD_WAIT_FOR_TRIGGER : 0;
if ((msg->flags & MIPI_DSI_MSG_LASTCOMMAND))
if ((msg->flags & MIPI_DSI_MSG_LASTCOMMAND) ||
(flags & DSI_CTRL_CMD_LAST_COMMAND))
hw_flags |= DSI_CTRL_CMD_LAST_COMMAND;
if (flags & DSI_CTRL_CMD_DEFER_TRIGGER) {
@@ -1488,6 +1489,8 @@ static int dsi_message_tx(struct dsi_ctrl *dsi_ctrl,
dsi_ctrl_validate_msg_flags(dsi_ctrl, msg, flags);
SDE_EVT32(dsi_ctrl->cell_index, SDE_EVTLOG_FUNC_ENTRY, flags);
if (dsi_ctrl->dma_wait_queued)
dsi_ctrl_flush_cmd_dma_queue(dsi_ctrl);
@@ -1527,7 +1530,23 @@ static int dsi_message_tx(struct dsi_ctrl *dsi_ctrl,
goto error;
}
if ((msg->flags & MIPI_DSI_MSG_LASTCOMMAND))
/*
* In case of broadcast CMD length cannot be greater than 512 bytes
* as specified by HW limitations. Need to overwrite the flags to
* set the LAST_COMMAND flag to ensure no command transfer failures.
*/
if ((*flags & DSI_CTRL_CMD_FETCH_MEMORY) &&
(*flags & DSI_CTRL_CMD_BROADCAST)) {
if ((dsi_ctrl->cmd_len + length) > 240) {
dsi_ctrl_mask_overflow(dsi_ctrl, true);
*flags |= DSI_CTRL_CMD_LAST_COMMAND;
SDE_EVT32(dsi_ctrl->cell_index, SDE_EVTLOG_FUNC_CASE1,
flags);
}
}
if ((msg->flags & MIPI_DSI_MSG_LASTCOMMAND) ||
(*flags & DSI_CTRL_CMD_LAST_COMMAND))
buffer[3] |= BIT(7);//set the last cmd bit in header.
if (*flags & DSI_CTRL_CMD_FETCH_MEMORY) {
@@ -1548,7 +1567,8 @@ static int dsi_message_tx(struct dsi_ctrl *dsi_ctrl,
dsi_ctrl->cmd_len += length;
if (!(msg->flags & MIPI_DSI_MSG_LASTCOMMAND)) {
if (!(msg->flags & MIPI_DSI_MSG_LASTCOMMAND) &&
!(*flags & DSI_CTRL_CMD_LAST_COMMAND)) {
goto error;
} else {
cmd_mem.length = dsi_ctrl->cmd_len;