drm/mipi-dsi: add mipi_dsi_shutdown_peripheral_multi

Add mipi_dsi_shutdown_peripheral_multi function and mark
mipi_dsi_shutdown_peripheral function as deprecated.

Signed-off-by: Avinal Kumar <avinal.xlvii@gmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patch.msgid.link/20260417061842.66631-2-avinal.xlvii@gmail.com

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 0390e14d31572710325116db974cf4aa9440657b..3ac1dd5ad640a982d4da691f833be51bc238e1a7 100644 (file)
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -587,6 +587,9 @@ EXPORT_SYMBOL(mipi_dsi_create_packet);
  * mipi_dsi_shutdown_peripheral() - sends a Shutdown Peripheral command
  * @dsi: DSI peripheral device
  *
+ * This function is deprecated. Use mipi_dsi_shutdown_peripheral_multi()
+ * instead.
+ *
  * Return: 0 on success or a negative error code on failure.
  */
 int mipi_dsi_shutdown_peripheral(struct mipi_dsi_device *dsi)
@@ -1980,6 +1983,31 @@ void mipi_dsi_dcs_set_tear_scanline_multi(struct mipi_dsi_multi_context *ctx,
 }
 EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_scanline_multi);
 
+/**
+ * mipi_dsi_shutdown_peripheral_multi() - sends a Shutdown Peripheral command
+ * @ctx: Context for multiple DSI transactions
+ *
+ * Like mipi_dsi_shutdown_peripheral() but deals with errors in a way that
+ * makes it convenient to make several calls in a row.
+ */
+void mipi_dsi_shutdown_peripheral_multi(struct mipi_dsi_multi_context *ctx)
+{
+       struct mipi_dsi_device *dsi = ctx->dsi;
+       struct device *dev = &dsi->dev;
+       int ret;
+
+       if (ctx->accum_err)
+               return;
+
+       ret = mipi_dsi_shutdown_peripheral(dsi);
+       if (ret < 0) {
+               ctx->accum_err = ret;
+               dev_err(dev, "Failed to shutdown peripheral: %d\n",
+                       ctx->accum_err);
+       }
+}
+EXPORT_SYMBOL(mipi_dsi_shutdown_peripheral_multi);
+
 static int mipi_dsi_drv_probe(struct device *dev)
 {
        struct mipi_dsi_driver *drv = to_mipi_dsi_driver(dev->driver);

diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index 2ab651a36115dee2d4887afc83f5ba5c210263a5..b429acde4f71a3b6b9dd51291baa7cc39b8aaed8 100644 (file)
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -393,6 +393,7 @@ void mipi_dsi_dcs_set_page_address_multi(struct mipi_dsi_multi_context *ctx,
 void mipi_dsi_dcs_set_tear_scanline_multi(struct mipi_dsi_multi_context *ctx,
                                          u16 scanline);
 void mipi_dsi_dcs_set_tear_off_multi(struct mipi_dsi_multi_context *ctx);
+void mipi_dsi_shutdown_peripheral_multi(struct mipi_dsi_multi_context *ctx);
 
 /**
  * mipi_dsi_generic_write_seq_multi - transmit data using a generic write packet