From: Yannick Fertre <yannick.fertre@st.com>
To: Yannick Fertre <yannick.fertre@st.com>,
Philippe Cornu <philippe.cornu@st.com>,
Benjamin Gaignard <benjamin.gaignard@st.com>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
<dri-devel@lists.freedesktop.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH v2] drm/bridge/synopsys: dsi: allow LP commands in video mode
Date: Wed, 8 Jul 2020 16:08:36 +0200 [thread overview]
Message-ID: <20200708140836.32418-1-yannick.fertre@st.com> (raw)
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
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next reply other threads:[~2020-07-08 14:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-08 14:08 Yannick Fertre [this message]
2020-07-10 8:43 ` [PATCH v2] drm/bridge/synopsys: dsi: allow LP commands in video mode Philippe CORNU
2020-09-07 8:02 ` Neil Armstrong
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