diff options
| author | Jon Mayo <jmayo@nvidia.com> | 2011-12-27 14:47:15 -0800 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2012-01-04 11:44:15 +0530 |
| commit | c2f7bb5e2296f227d4fe0afcf71d8ce1bfca6ee8 (patch) | |
| tree | 698c11dd1ccc5eb3430ffa16c892c3145206378e /drivers/video | |
| parent | f3b7aa416f443777ec1bb002c18451fef8fbca32 (diff) | |
video: tegra: dc: use highest bandwidth setting
Apply the highest bandwidth setting before windows are programmed rather
than waiting for vblank.
Bug 914917
Change-Id: Iaaede9966191fdfc896bbbb19fbbadf9c4598bff
Signed-off-by: Jon Mayo <jmayo@nvidia.com>
Reviewed-on: http://git-master/r/72301
Reviewed-by: Michael I Gold <gold@nvidia.com>
Tested-by: Michael I Gold <gold@nvidia.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/tegra/dc/dc.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/video/tegra/dc/dc.c b/drivers/video/tegra/dc/dc.c index 1c0ff2a51bea..1ae7633eb9da 100644 --- a/drivers/video/tegra/dc/dc.c +++ b/drivers/video/tegra/dc/dc.c @@ -973,6 +973,24 @@ unsigned long tegra_dc_get_bandwidth(struct tegra_dc_win *windows[], int n) return tegra_dc_find_max_bandwidth(windows, n); } +/* program bandwidth needs if higher than old bandwidth */ +static void tegra_dc_increase_bandwidth(struct tegra_dc *dc) +{ + unsigned i; + + if (dc->emc_clk_rate < dc->new_emc_clk_rate) { + dc->emc_clk_rate = dc->new_emc_clk_rate; + clk_set_rate(dc->emc_clk, dc->emc_clk_rate); + } + + for (i = 0; i < DC_N_WINDOWS; i++) { + struct tegra_dc_win *w = &dc->windows[i]; + if (w->bandwidth < w->new_bandwidth && w->new_bandwidth != 0) + tegra_dc_set_latency_allowance(dc, w); + } +} + +/* program the current bandwidth */ static void tegra_dc_program_bandwidth(struct tegra_dc *dc) { unsigned i; @@ -1230,6 +1248,7 @@ int tegra_dc_update_windows(struct tegra_dc_win *windows[], int n) } tegra_dc_set_dynamic_emc(windows, n); + tegra_dc_increase_bandwidth(dc); tegra_dc_writel(dc, update_mask << 8, DC_CMD_STATE_CONTROL); |