From 6188b06e0357b3bc3b91d0b67783681d34ff2b64 Mon Sep 17 00:00:00 2001 From: Antonio Borneo <antonio.borneo@st.com> Date: Wed, 8 Jul 2020 16:08:36 +0200 Subject: [PATCH] drm/bridge/synopsys: dsi: allow LP commands in video mode 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> Tested-by: Philippe Cornu <philippe.cornu@st.com> Reviewed-by: Philippe Cornu <philippe.cornu@st.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200708140836.32418-1-yannick.fertre@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 d580b2aa4ce98..d41ce1de10678 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) @@ -367,6 +368,13 @@ 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) -- GitLab