diff options
| author | Simon Glass <sjg@chromium.org> | 2011-12-19 15:32:23 -0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2012-01-05 15:55:08 -0800 |
| commit | 384aa66841ff5e83701a9384823a4890e025028c (patch) | |
| tree | 4f950c467d1a37d41b1959332a7cd40231667bb6 /drivers | |
| parent | 7d436642249ec30640a1d23b209214ccf4a2d0b1 (diff) | |
tegra: Delay exact screen size selection until later
Prior to relocation it is expensive to find out the LCD dimensions. Instead
we select the maximum possible size and allow lcd_ctrl_init() to correct
this later.
This works since the only purpose of this early init is to set the LCD
frame buffer size. So long as we set it to the largest value that could
possible be requested, all will be well.
BUG=chromium-os:22938
TEST=build and boot on Kaen
Change-Id: I850ee5cb2b6bf051e32c6a52c42c368a940ea045
Reviewed-on: https://gerrit.chromium.org/gerrit/13212
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
Commit-Ready: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/tegra2.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/drivers/video/tegra2.c b/drivers/video/tegra2.c index 6a458d139d..3f60c64fae 100644 --- a/drivers/video/tegra2.c +++ b/drivers/video/tegra2.c @@ -47,6 +47,13 @@ static enum stage_t stage; /* Current stage we are at */ static unsigned long timer_next; /* Time we can move onto next stage */ static struct fdt_lcd config; /* Our LCD config, set up in handle_stage() */ +enum { + /* Maximum LCD size we support */ + LCD_MAX_WIDTH = 1366, + LCD_MAX_HEIGHT = 768, + LCD_MAX_LOG2_BPP = 4, /* 16 bpp */ +}; + int lcd_line_length; int lcd_color_fg; int lcd_color_bg; @@ -208,7 +215,13 @@ void lcd_ctrl_init(void *lcdbase) config.frame_buffer = (u32)lcd_base; } - update_panel_size(&config); + /* Make sure that we can acommodate the selected LCD */ + assert(config.width <= LCD_MAX_WIDTH); + assert(config.height <= LCD_MAX_HEIGHT); + assert(config.log2_bpp <= LCD_MAX_LOG2_BPP); + if (config.width <= LCD_MAX_WIDTH && config.height <= LCD_MAX_HEIGHT && + config.log2_bpp <= LCD_MAX_LOG2_BPP) + update_panel_size(&config); size = lcd_get_size(&line_length), /* call board specific hw init */ @@ -238,11 +251,13 @@ void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue) void lcd_early_init(const void *blob) { - struct fdt_lcd config; - - /* get panel details */ - if (!fdt_decode_lcd(gd->blob, &config)) - update_panel_size(&config); + /* + * Go with the maximum size for now. We will fix this up after + * relocation. These values are only used for memory alocation. + */ + panel_info.vl_col = LCD_MAX_WIDTH; + panel_info.vl_row = LCD_MAX_HEIGHT; + panel_info.vl_bpix = LCD_MAX_LOG2_BPP; } static int handle_stage(const void *blob) |