From: Avinal Kumar Date: Fri, 17 Apr 2026 06:18:41 +0000 (+0530) Subject: drm/mipi-dsi: add mipi_dsi_shutdown_peripheral_multi X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac7e1a9819d6ada9a9800d6d26256e5258711b99;p=thirdparty%2Fkernel%2Flinux.git 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 Reviewed-by: Neil Armstrong Reviewed-by: Douglas Anderson Signed-off-by: Douglas Anderson 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 0390e14d31572..3ac1dd5ad640a 100644 --- 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 2ab651a36115d..b429acde4f71a 100644 --- 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