From: Thierry Reding <tred...@nvidia.com>
Provide a small convenience wrapper that transmits a DCS get_power_mode
command. A set of bitmasks for the mode bits is also provided.
Signed-off-by: Thierry Reding <treding at nvidia.com>
---
drivers/gpu/drm/drm_mipi_dsi.c | 21 +++++++++++++++++++++
include/drm/drm_mipi_dsi.h | 7 +++++++
2 files changed, 28 insertions(+)
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 60bd68b520ae..4e016a6a9fc3 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -553,6 +553,27 @@ int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi)
EXPORT_SYMBOL(mipi_dsi_dcs_soft_reset);
/**
+ * mipi_dsi_dcs_get_power_mode() - query the display module's current power
+ * mode
+ * @dsi: DSI peripheral device
+ * @mode: return location for the current power mode
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode)
+{
+ ssize_t err;
+
+ err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_POWER_MODE, mode,
+ sizeof(*mode));
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL(mipi_dsi_dcs_get_power_mode);
+
+/**
* mipi_dsi_dcs_enter_sleep_mode() - disable all unnecessary blocks inside the
* display module except interface communication
* @dsi: DSI peripheral device
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index 2afbd5853f78..b659b99ac890 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -164,6 +164,12 @@ enum mipi_dsi_dcs_tear_mode {
MIPI_DSI_DCS_TEAR_MODE_VHBLANK,
};
+#define MIPI_DSI_DCS_POWER_MODE_DISPLAY (1 << 2)
+#define MIPI_DSI_DCS_POWER_MODE_NORMAL (1 << 3)
+#define MIPI_DSI_DCS_POWER_MODE_SLEEP (1 << 4)
+#define MIPI_DSI_DCS_POWER_MODE_PARTIAL (1 << 5)
+#define MIPI_DSI_DCS_POWER_MODE_IDLE (1 << 6)
+
ssize_t mipi_dsi_dcs_write_buffer(struct mipi_dsi_device *dsi,
const void *data, size_t len);
ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd,
@@ -172,6 +178,7 @@ ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8
cmd, void *data,
size_t len);
int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi);
int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi);
+int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode);
int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi);
int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi);
int mipi_dsi_dcs_set_display_off(struct mipi_dsi_device *dsi);
--
2.1.2
