From: Gaurav K Singh Date: Wed, 10 Dec 2014 16:37:40 +0000 (+0530) Subject: drm/i915: Changes related to the sequence port no for X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f915084edc5aad351d6a4675b0bcdded9a00090d;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git drm/i915: Changes related to the sequence port no for From now on for both DSI Ports A & C, the seq_port value has been set to 0. seq_port value is parsed from Sequence block#53 of VBT. So, for packets that needs to be read/write for DSI single link on Port A and Port C will now be based on the DVO port from VBT block 2, instead of seq_port. Signed-off-by: Gaurav K Singh Reviewed-by: Jani Nikula Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c index f8c2269c434c..5493aef5a6a3 100644 --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c @@ -110,7 +110,15 @@ static u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi, u8 *data) vc = (byte >> MIPI_VIRTUAL_CHANNEL_SHIFT) & 0x3; seq_port = (byte >> MIPI_PORT_SHIFT) & 0x3; - port = intel_dsi_seq_port_to_port(seq_port); + /* For DSI single link on Port A & C, the seq_port value which is + * parsed from Sequence Block#53 of VBT has been set to 0 + * Now, read/write of packets for the DSI single link on Port A and + * Port C will based on the DVO port from VBT block 2. + */ + if (intel_dsi->ports == (1 << PORT_C)) + port = PORT_C; + else + port = intel_dsi_seq_port_to_port(seq_port); /* LP or HS mode */ intel_dsi->hs = mode;