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From: Thierry Reding <thierry.reding@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>, dri-devel@lists.freedesktop.org
Subject: [PATCH v4 10/16] drm/dsi: Implement DCS nop command
Date: Mon,  3 Nov 2014 10:13:35 +0100	[thread overview]
Message-ID: <1415006021-29313-10-git-send-email-thierry.reding@gmail.com> (raw)
In-Reply-To: <1415006021-29313-1-git-send-email-thierry.reding@gmail.com>

From: Thierry Reding <treding@nvidia.com>

Provide a small convenience wrapper that transmits a DCS nop command.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/drm_mipi_dsi.c | 18 ++++++++++++++++++
 include/drm/drm_mipi_dsi.h     |  1 +
 2 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index b4e10d3c81ce..f1617fe5469e 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -492,6 +492,24 @@ ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data,
 EXPORT_SYMBOL(mipi_dsi_dcs_read);
 
 /**
+ * mipi_dsi_dcs_nop() - send DCS nop packet
+ * @dsi: DSI peripheral device
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi)
+{
+	ssize_t err;
+
+	err = mipi_dsi_dcs_write(dsi, MIPI_DCS_NOP, NULL, 0);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+EXPORT_SYMBOL(mipi_dsi_dcs_nop);
+
+/**
  * 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 359287d4ca92..23b4ac575aa5 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -188,6 +188,7 @@ ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd,
 			   const void *data, size_t len);
 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_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

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  parent reply	other threads:[~2014-11-03  9:14 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-03  9:13 [PATCH v4 01/16] drm/dsi: Add message to packet translator Thierry Reding
2014-11-03  9:13 ` [PATCH v4 02/16] drm/dsi: Add DSI transfer helper Thierry Reding
2014-11-04 11:47   ` Andrzej Hajda
2014-11-03  9:13 ` [PATCH v4 03/16] drm/dsi: Make mipi_dsi_dcs_{read, write}() symmetrical Thierry Reding
2014-11-03  9:13 ` [PATCH v4 04/16] drm/dsi: Constify mipi_dsi_msg Thierry Reding
2014-11-03  9:13 ` [PATCH v4 05/16] drm/dsi: Add mipi_dsi_set_maximum_return_packet_size() helper Thierry Reding
2014-11-03  9:13 ` [PATCH v4 06/16] drm/panel: s6e8aa0: Use standard MIPI DSI function Thierry Reding
2014-11-03  9:13 ` [PATCH v4 07/16] drm/dsi: Implement generic read and write commands Thierry Reding
2014-11-03  9:13 ` [PATCH v4 08/16] drm/dsi: Implement some standard DCS commands Thierry Reding
2014-11-03  9:13 ` [PATCH v4 09/16] drm/dsi: Add to DocBook documentation Thierry Reding
2014-11-03  9:13 ` Thierry Reding [this message]
2014-11-03  9:13 ` [PATCH v4 11/16] drm/dsi: Implement DCS soft_reset command Thierry Reding
2014-11-03  9:13 ` [PATCH v4 12/16] drm/dsi: Implement DCS get_power_mode command Thierry Reding
2014-11-03  9:13 ` [PATCH v4 13/16] drm/dsi: Implement DCS {get, set}_pixel_format commands Thierry Reding
2014-11-03 17:10   ` Sean Paul
2014-11-04 13:34     ` [PATCH v4 13/16] drm/dsi: Implement DCS {get,set}_pixel_format commands Thierry Reding
2014-11-03  9:13 ` [PATCH v4 14/16] drm/dsi: Implement DCS set_{column, page}_address commands Thierry Reding
2014-11-03  9:13 ` [PATCH v4 15/16] drm/dsi: Resolve MIPI DSI device from phandle Thierry Reding
2014-11-03  9:13 ` [PATCH v4 16/16] drm/panel: Add Sharp LQ101R1SX01 support Thierry Reding
2014-11-03 17:28   ` Sean Paul
2014-11-04 10:41   ` Andrzej Hajda
2014-11-04 13:29     ` Thierry Reding
2014-11-05 14:39       ` Andrzej Hajda
2014-11-04 11:43 ` [PATCH v4 01/16] drm/dsi: Add message to packet translator Andrzej Hajda
2014-11-04 13:58   ` Thierry Reding
2014-11-04 14:21     ` Andrzej Hajda
2014-11-04 14:39       ` Thierry Reding
2014-11-05 13:35         ` Andrzej Hajda

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