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| author | Thierry Reding <treding@nvidia.com> | 2014-11-13 14:50:33 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-11-13 16:12:26 +0100 |
| commit | 3f6b406f7d716310c7a63648bbe6b2a4a30c3077 (patch) | |
| tree | 9b1b8de4025f7397f9dbaf970ebc4abba57940ce /drivers/gpu/drm/tegra/dsi.c | |
| parent | 337b443d58e2d7d04d23ed07ff61b1243d5f9f2d (diff) | |
| download | op-kernel-dev-3f6b406f7d716310c7a63648bbe6b2a4a30c3077.zip op-kernel-dev-3f6b406f7d716310c7a63648bbe6b2a4a30c3077.tar.gz | |
drm/tegra: dsi: Split out tegra_dsi_set_timeout()
In preparation for adding ganged-mode support, this commit splits out
the tegra_dsi_set_timeout() function so that it can be reused for the
slave DSI controller.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/dsi.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dsi.c | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index 50684a4..46fcf62 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -681,15 +681,35 @@ static int tegra_output_dsi_disable(struct tegra_output *output) return 0; } +static void tegra_dsi_set_timeout(struct tegra_dsi *dsi, unsigned long bclk, + unsigned int vrefresh) +{ + unsigned int timeout; + u32 value; + + /* one frame high-speed transmission timeout */ + timeout = (bclk / vrefresh) / 512; + value = DSI_TIMEOUT_LRX(0x2000) | DSI_TIMEOUT_HTX(timeout); + tegra_dsi_writel(dsi, value, DSI_TIMEOUT_0); + + /* 2 ms peripheral timeout for panel */ + timeout = 2 * bclk / 512 * 1000; + value = DSI_TIMEOUT_PR(timeout) | DSI_TIMEOUT_TA(0x2000); + tegra_dsi_writel(dsi, value, DSI_TIMEOUT_1); + + value = DSI_TALLY_TA(0) | DSI_TALLY_LRX(0) | DSI_TALLY_HTX(0); + tegra_dsi_writel(dsi, value, DSI_TO_TALLY); +} + static int tegra_output_dsi_setup_clock(struct tegra_output *output, struct clk *clk, unsigned long pclk, unsigned int *divp) { struct tegra_dc *dc = to_tegra_dc(output->encoder.crtc); struct drm_display_mode *mode = &dc->base.mode; - unsigned int timeout, mul, div, vrefresh; struct tegra_dsi *dsi = to_dsi(output); - unsigned long bclk, plld, value; + unsigned int mul, div, vrefresh; + unsigned long bclk, plld; int err; err = tegra_dsi_get_muldiv(dsi->format, &mul, &div); @@ -744,19 +764,7 @@ static int tegra_output_dsi_setup_clock(struct tegra_output *output, * XXX: Move the below somewhere else so that we don't need to have * access to the vrefresh in this function? */ - - /* one frame high-speed transmission timeout */ - timeout = (bclk / vrefresh) / 512; - value = DSI_TIMEOUT_LRX(0x2000) | DSI_TIMEOUT_HTX(timeout); - tegra_dsi_writel(dsi, value, DSI_TIMEOUT_0); - - /* 2 ms peripheral timeout for panel */ - timeout = 2 * bclk / 512 * 1000; - value = DSI_TIMEOUT_PR(timeout) | DSI_TIMEOUT_TA(0x2000); - tegra_dsi_writel(dsi, value, DSI_TIMEOUT_1); - - value = DSI_TALLY_TA(0) | DSI_TALLY_LRX(0) | DSI_TALLY_HTX(0); - tegra_dsi_writel(dsi, value, DSI_TO_TALLY); + tegra_dsi_set_timeout(dsi, bclk, vrefresh); return 0; } |
