Commit 4cda6e8e authored Jan 25, 2018 by Philippe Cornu Committed by Archit Taneja Jan 30, 2018

drm/bridge/synopsys: dsi: Add a warning msg on dsi read requests



The dcs/generic dsi read feature is not yet implemented so it
is important to warn the host_transfer() caller in case of
read operation requests.

Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180125103800.1999-2-philippe.cornu@st.com

parent 21f815bf

drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -398,6 +398,12 @@ static ssize_t dw_mipi_dsi_host_transfer(struct mipi_dsi_host *host,
		struct mipi_dsi_packet packet;
		int ret;

		if (msg->rx_buf \|\| msg->rx_len) {
		/* TODO dw drv improvements: implement read feature */
		dev_warn(dsi->dev, "read operations not yet implemented\n");
		return -EINVAL;
		}

		ret = mipi_dsi_create_packet(&packet, msg);
		if (ret) {
		dev_err(dsi->dev, "failed to create packet: %d\n", ret);