Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933078AbcDTJdZ (ORCPT ); Wed, 20 Apr 2016 05:33:25 -0400 Received: from mail-pa0-f52.google.com ([209.85.220.52]:33373 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932159AbcDTJdW (ORCPT ); Wed, 20 Apr 2016 05:33:22 -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 v2 3/4] drm/dsi: Implement set tear scanline Date: Wed, 20 Apr 2016 15:02:32 +0530 Message-Id: <1461144755-10633-3-git-send-email-simhavcs@gmail.com> X-Mailer: git-send-email 2.1.2 In-Reply-To: <1461144755-10633-1-git-send-email-simhavcs@gmail.com> References: <20160414171500.GA11505@rob-hp-laptop> <1461144755-10633-1-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: 2103 Lines: 57 Provide a small convenience wrapper that transmits a set_tear_scanline command. Signed-off-by: Vinay Simha BN --- drivers/gpu/drm/drm_mipi_dsi.c | 22 ++++++++++++++++++++++ include/drm/drm_mipi_dsi.h | 2 ++ 2 files changed, 24 insertions(+) diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index f5d8083..26aba75 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -983,6 +983,28 @@ int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_on); /** + * mipi_dsi_set_tear_scanline() - turn on the display module's Tearing Effect + * output signal on the TE signal line when display module reaches line N + * defined by STS[n:0]. + * @dsi: DSI peripheral device + * @param1: STS[10:8] + * @param2: STS[7:0] + * Return: 0 on success or a negative error code on failure + */ +int mipi_dsi_set_tear_scanline(struct mipi_dsi_device *dsi, + u8 param1, u8 param2) +{ + u8 payload[3] = { MIPI_DCS_SET_TEAR_SCANLINE, param1 , param2}; + ssize_t err; + + err = mipi_dsi_generic_write(dsi, &payload, sizeof(payload)); + if (err < 0) + return err; + + return 0; +} +EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_scanline); +/** * mipi_dsi_dcs_set_pixel_format() - sets 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 7a9840f..37bd75d 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -263,6 +263,8 @@ int mipi_dsi_dcs_set_column_address(struct mipi_dsi_device *dsi, u16 start, u16 end); int mipi_dsi_dcs_set_page_address(struct mipi_dsi_device *dsi, u16 start, u16 end); +int mipi_dsi_set_tear_scanline(struct mipi_dsi_device *dsi, u8 param1, + u8 param2); int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, enum mipi_dsi_dcs_tear_mode mode); -- 2.1.2