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drm/tegra: dsi: Make FIFO depths host parameters

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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: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2014-08-06 09:14:28 +02:00
parent 0bfad39671
commit 976cebc35b
1 changed files with 6 additions and 4 deletions
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10
drivers/gpu/drm/tegra/dsi.c
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@ -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)