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Commit 976cebc3 authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/tegra: dsi: Make FIFO depths host parameters 



Rather than hardcoding them as macros, make the host and video FIFO
depths parameters so that they can be more easily adjusted if a new
generation of the Tegra SoC changes them.

While at it, set the depth of the video FIFO to the correct value of
1920 *words* rather than *bytes*.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 0bfad396

drivers/gpu/drm/tegra/dsi.c

+6 −4
Original line number Diff line number Diff line
@@ -26,9 +26,6 @@ 
#include "dsi.h"

#include "mipi-phy.h"



#define DSI_VIDEO_FIFO_DEPTH (1920 / 4)

#define DSI_HOST_FIFO_DEPTH 64



struct tegra_dsi {

	struct host1x_client client;

	struct tegra_output output;
@@ -54,6 +51,9 @@ struct tegra_dsi { 


	struct regulator *vdd;

	bool enabled;



	unsigned int video_fifo_depth;

	unsigned int host_fifo_depth;

};



static inline struct tegra_dsi *
@@ -467,7 +467,7 @@ static int tegra_output_dsi_enable(struct tegra_output *output) 
		DSI_CONTROL_SOURCE(dc->pipe);

	tegra_dsi_writel(dsi, value, DSI_CONTROL);



	tegra_dsi_writel(dsi, DSI_VIDEO_FIFO_DEPTH, DSI_MAX_THRESHOLD);

	tegra_dsi_writel(dsi, dsi->video_fifo_depth, DSI_MAX_THRESHOLD);



	value = DSI_HOST_CONTROL_HS | DSI_HOST_CONTROL_CS |

		DSI_HOST_CONTROL_ECC;
@@ -843,6 +843,8 @@ static int tegra_dsi_probe(struct platform_device *pdev) 
		return -ENOMEM;



	dsi->output.dev = dsi->dev = &pdev->dev;

	dsi->video_fifo_depth = 1920;

	dsi->host_fifo_depth = 64;



	err = tegra_output_probe(&dsi->output);

	if (err < 0)