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* [PATCH v2] drm/bridge/synopsys: dsi: allow LP commands in video mode
@ 2020-07-08 14:08 ` Yannick Fertre
  0 siblings, 0 replies; 9+ messages in thread
From: Yannick Fertre @ 2020-07-08 14:08 UTC (permalink / raw)
  To: Yannick Fertre, Philippe Cornu, Benjamin Gaignard, David Airlie,
	Daniel Vetter, Maxime Coquelin, Alexandre Torgue, dri-devel,
	linux-stm32, linux-arm-kernel, linux-kernel

From: Antonio Borneo <antonio.borneo@st.com>

Current code only sends LP commands in command mode.

Allows sending LP commands also in video mode by setting the
proper flag in DSI_VID_MODE_CFG.

Signed-off-by: Antonio Borneo <antonio.borneo@st.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 1a24ea648ef8..e9a0f42ff99f 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -89,6 +89,7 @@
 #define VID_MODE_TYPE_NON_BURST_SYNC_EVENTS	0x1
 #define VID_MODE_TYPE_BURST			0x2
 #define VID_MODE_TYPE_MASK			0x3
+#define ENABLE_LOW_POWER_CMD		BIT(15)
 #define VID_MODE_VPG_ENABLE		BIT(16)
 #define VID_MODE_VPG_HORIZONTAL		BIT(24)
 
@@ -376,6 +377,13 @@ static void dw_mipi_message_config(struct dw_mipi_dsi *dsi,
 
 	dsi_write(dsi, DSI_LPCLK_CTRL, lpm ? 0 : PHY_TXREQUESTCLKHS);
 	dsi_write(dsi, DSI_CMD_MODE_CFG, val);
+
+	val = dsi_read(dsi, DSI_VID_MODE_CFG);
+	if (lpm)
+		val |= ENABLE_LOW_POWER_CMD;
+	else
+		val &= ~ENABLE_LOW_POWER_CMD;
+	dsi_write(dsi, DSI_VID_MODE_CFG, val);
 }
 
 static int dw_mipi_dsi_gen_pkt_hdr_write(struct dw_mipi_dsi *dsi, u32 hdr_val)
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2020-09-07  8:03 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-08 14:08 [PATCH v2] drm/bridge/synopsys: dsi: allow LP commands in video mode Yannick Fertre
2020-07-08 14:08 ` Yannick Fertre
2020-07-08 14:08 ` Yannick Fertre
2020-07-10  8:43 ` Philippe CORNU
2020-07-10  8:43   ` Philippe CORNU
2020-07-10  8:43   ` Philippe CORNU
2020-09-07  8:02 ` Neil Armstrong
2020-09-07  8:02   ` Neil Armstrong
2020-09-07  8:02   ` Neil Armstrong

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