Commit 580ab004 authored Sep 09, 2019 by Shashank Babu Chinta Venkata Committed by Alistair Delva Apr 16, 2020

ANDROID: include: drm: support unicasting mipi cmds to dsi ctrls



Add support into the drm_mipi_dsi framework to support
unicasting DCS commands to specific DSI controls within a panel.
This is required for partial update where region of interest
spans only on one controller in a dual controller configuration.
Also, Some display panel have the requirement of waiting for certain
duration before dsi host can read back the response from panel during
a DCS read command. This change adds the support to store
the delay required in dsi message structure.

Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: I3a99437441410a2514f9486d08ae3ba68670769e

parent d4d0146e

include/drm/drm_mipi_dsi.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -21,12 +21,16 @@ struct mipi_dsi_device;
		#define MIPI_DSI_MSG_REQ_ACK BIT(0)
		/* use Low Power Mode to transmit message */
		#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)

		/**
		* struct mipi_dsi_msg - read/write DSI buffer
		* @channel: virtual channel id
		* @type: payload data type
		* @flags: flags controlling this message transmission
		* @ctrl: ctrl index to transmit on
		* @wait_ms: duration in ms to wait after message transmission
		* @tx_len: length of @tx_buf
		* @tx_buf: data to be written
		* @rx_len: length of @rx_buf
		@@ -36,6 +40,8 @@ struct mipi_dsi_msg {
		u8 channel;
		u8 type;
		u16 flags;
		u32 ctrl;
		u32 wait_ms;

		size_t tx_len;
		const void *tx_buf;