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Subject[PATCH] drm/bridge/synopsys: dsi: allows LP commands in video mode
Date
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>
Change-Id: Ib78fa37bcc7559ce63017acd6ee0bbf00c61a397
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/linux-stm32/+/153242
Reviewed-by: CITOOLS <smet-aci-reviews@lists.codex.cro.st.com>
Reviewed-by: CIBUILD <smet-aci-builds@lists.codex.cro.st.com>
Reviewed-by: Yannick FERTRE <yannick.fertre@st.com>
Reviewed-by: Philippe CORNU <philippe.cornu@st.com>
Tested-by: Yannick FERTRE <yannick.fertre@st.com>
---
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index d580b2aa4ce9..0cd43e7a69bb 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -367,6 +367,13 @@ 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
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