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authorJoel Selvaraj <jo@jsfamily.in>2022-06-01 11:24:09 +0300
committerSam Ravnborg <sam@ravnborg.org>2022-06-24 23:34:39 +0300
commit2a9e9daf75231c2f577209af5ec62aecdf7ca7af (patch)
treef341f7f75006dd62fef8f1e1a9cc996710bc6de9 /include/drm
parentc5ec5fa3931675e583aada31db1453038f7b76a4 (diff)
downloadlinux-2a9e9daf75231c2f577209af5ec62aecdf7ca7af.tar.xz
drm/mipi-dsi: Introduce mipi_dsi_dcs_write_seq macro
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> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/BY5PR02MB700952493EEB6F0E77DC8416D9DF9@BY5PR02MB7009.namprd02.prod.outlook.com
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/drm_mipi_dsi.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index 51e09a1a106a..91a164bdd8f3 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -296,6 +296,23 @@ 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
* @probe: callback for device binding