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| author | Andre Heider <a.heider@gmail.com> | 2013-11-09 11:07:53 +0100 |
|---|---|---|
| committer | Anatolij Gustschin <agust@denx.de> | 2013-11-12 09:35:40 +0100 |
| commit | 44376eff256da60625f99c1f3559c290f148fc1c (patch) | |
| tree | 098876d78f7828f70d2bafa16e45c9df0284f232 /drivers/video/bcm2835.c | |
| parent | cefa47171276509fee89d8084da15409285e481b (diff) | |
| download | u-boot-44376eff256da60625f99c1f3559c290f148fc1c.tar.gz u-boot-44376eff256da60625f99c1f3559c290f148fc1c.tar.bz2 u-boot-44376eff256da60625f99c1f3559c290f148fc1c.zip | |
video: bcm2835: respect the pitch value
Depending on the firmware's video options [1] the active SDTV or
HDTV mode can yield a framebuffer with noncontiguous horizontal lines,
giving a messed up display, for both, u-boot and the loaded kernel.
Fix this by setting lcd_line_length to the pitch value of the configured
framebuffer.
[1] http://elinux.org/RPiconfig#Video_mode_options
Signed-off-by: Andre Heider <a.heider@gmail.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'drivers/video/bcm2835.c')
| -rw-r--r-- | drivers/video/bcm2835.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c index 58a616317a..1f18231ac6 100644 --- a/drivers/video/bcm2835.c +++ b/drivers/video/bcm2835.c @@ -14,6 +14,8 @@ DECLARE_GLOBAL_DATA_PTR; /* Global variables that lcd.c expects to exist */ vidinfo_t panel_info; +static u32 bcm2835_pitch; + struct msg_query { struct bcm2835_mbox_hdr hdr; struct bcm2835_mbox_tag_physical_w_h physical_w_h; @@ -30,6 +32,7 @@ struct msg_setup { struct bcm2835_mbox_tag_virtual_offset virtual_offset; struct bcm2835_mbox_tag_overscan overscan; struct bcm2835_mbox_tag_allocate_buffer allocate_buffer; + struct bcm2835_mbox_tag_pitch pitch; u32 end_tag; }; @@ -80,6 +83,7 @@ void lcd_ctrl_init(void *lcdbase) msg_setup->overscan.body.req.right = 0; BCM2835_MBOX_INIT_TAG(&msg_setup->allocate_buffer, ALLOCATE_BUFFER); msg_setup->allocate_buffer.body.req.alignment = 0x100; + BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_setup->pitch, GET_PITCH); ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_setup->hdr); if (ret) { @@ -90,6 +94,7 @@ void lcd_ctrl_init(void *lcdbase) w = msg_setup->physical_w_h.body.resp.width; h = msg_setup->physical_w_h.body.resp.height; + bcm2835_pitch = msg_setup->pitch.body.resp.pitch; debug("bcm2835: Final resolution is %d x %d\n", w, h); @@ -103,3 +108,9 @@ void lcd_ctrl_init(void *lcdbase) void lcd_enable(void) { } + +int lcd_get_size(int *line_length) +{ + *line_length = bcm2835_pitch; + return *line_length * panel_info.vl_row; +} |