summaryrefslogtreecommitdiff
path: root/drivers/video/bcm2835.c
diff options
context:
space:
mode:
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;
+}