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authorAndre Heider <a.heider@gmail.com>2013-11-09 11:07:53 +0100
committerAnatolij Gustschin <agust@denx.de>2013-11-12 09:35:40 +0100
commit44376eff256da60625f99c1f3559c290f148fc1c (patch)
tree098876d78f7828f70d2bafa16e45c9df0284f232 /drivers/video/bcm2835.c
parentcefa47171276509fee89d8084da15409285e481b (diff)
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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.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c
index 58a6163..1f18231 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;
+}