A helper macro that can be used to simplify sending DCS commands. It is useful in scenarios like panel initialization which can sometimes involve sending lot of DCS commands.
Signed-off-by: Joel Selvaraj jo@jsfamily.in --- Changes in v4: (Linus Walleij's Suggestion) - Introduce mipi_dsi_dcs_write_seq macro in include/drm/drm_mipi_dsi.h
include/drm/drm_mipi_dsi.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 147e51b6d241..4a5996901689 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -293,6 +293,23 @@ int mipi_dsi_dcs_set_display_brightness(struct mipi_dsi_device *dsi, int mipi_dsi_dcs_get_display_brightness(struct mipi_dsi_device *dsi, u16 *brightness);
+/** + * mipi_dsi_dcs_write_seq - transmit a DCS command with payload + * @dsi: DSI peripheral device + * @cmd: Command + * @seq: buffer containing data to be transmitted + */ +#define mipi_dsi_dcs_write_seq(dsi, cmd, seq...) do { \ + static const u8 d[] = { cmd, seq }; \ + struct device *dev = &dsi->dev; \ + int ret; \ + ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \ + if (ret < 0) { \ + dev_err_ratelimited(dev, "sending command %#02x failed: %d\n", cmd, ret); \ + return ret; \ + } \ + } while (0) + /** * struct mipi_dsi_driver - DSI driver * @driver: device driver model driver