Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752122AbcDRJXY (ORCPT ); Mon, 18 Apr 2016 05:23:24 -0400 Received: from mail-pf0-f180.google.com ([209.85.192.180]:34841 "EHLO mail-pf0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752091AbcDRJXW (ORCPT ); Mon, 18 Apr 2016 05:23:22 -0400 From: Vinay Simha BN Cc: Vinay Simha BN , David Airlie , dri-devel@lists.freedesktop.org (open list:DRM DRIVERS), linux-kernel@vger.kernel.org (open list) Subject: [PATCH 2/2] drm/dsi: Implement DCS get display self diagnostic Date: Mon, 18 Apr 2016 14:52:05 +0530 Message-Id: <1460971325-26982-2-git-send-email-simhavcs@gmail.com> X-Mailer: git-send-email 2.1.2 In-Reply-To: <1460971325-26982-1-git-send-email-simhavcs@gmail.com> References: <1460971325-26982-1-git-send-email-simhavcs@gmail.com> To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2099 Lines: 59 Provide a small convenience wrapper that transmits a DCS get_diagnostic_result command. Signed-off-by: Vinay Simha BN --- drivers/gpu/drm/drm_mipi_dsi.c | 25 +++++++++++++++++++++++++ include/drm/drm_mipi_dsi.h | 1 + 2 files changed, 26 insertions(+) diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 2e032ea..e49b346 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -816,6 +816,31 @@ int mipi_dsi_dcs_get_display_mode(struct mipi_dsi_device *dsi, u8 *mode) EXPORT_SYMBOL(mipi_dsi_dcs_get_display_mode); /** + * mipi_dsi_dcs_get_diagnostic_result() - query the display module's diagnostic + * result + * @dsi: DSI peripheral device + * @mode: return location for the display self diagnostic result + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_dcs_get_diagnostic_result(struct mipi_dsi_device *dsi, u8 *mode) +{ + ssize_t err; + + err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_DIAGNOSTIC_RESULT, mode, + sizeof(*mode)); + if (err <= 0) { + if (err == 0) + err = -ENODATA; + + return err; + } + + return 0; +} +EXPORT_SYMBOL(mipi_dsi_dcs_get_diagnostic_result); + +/** * mipi_dsi_dcs_get_pixel_format() - gets the pixel format for the RGB image * data used by the interface * @dsi: DSI peripheral device diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 48fcd65..61c375b 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -255,6 +255,7 @@ 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_get_display_mode(struct mipi_dsi_device *dsi, u8 *mode); +int mipi_dsi_dcs_get_diagnostic_result(struct mipi_dsi_device *dsi, u8 *mode); int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format); int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi); -- 2.1.2