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video: arm: rpi: Move the video query out of the driver

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Add a function to get the video size to the msg handler and remove it from
the video driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Simon Glass 2017-04-05 16:23:40 -06:00 • committed by Tom Rini
parent 25877d4e4c
commit 2e4170b63b
3 changed files with 38 additions and 17 deletions
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9
arch/arm/mach-bcm283x/include/mach/msg.h
View file

@ -22,4 +22,13 @@ int bcm2835_power_on_module(u32 module);
*/
int bcm2835_get_mmc_clock(void);
/**
* bcm2835_get_video_size() - get the current display size
*
* @widthp: Returns the width in pixels
* @heightp: Returns the height in pixels
* @return 0 if OK, -ve on error
*/
int bcm2835_get_video_size(int *widthp, int *heightp);
#endif

26
arch/arm/mach-bcm283x/msg.c
View file

@ -6,6 +6,7 @@
#include <common.h>
#include <memalign.h>
#include <phys2bus.h>
#include <asm/arch/mbox.h>
struct msg_set_power_state {
@ -20,6 +21,12 @@ struct msg_get_clock_rate {
u32 end_tag;
};
struct msg_query {
struct bcm2835_mbox_hdr hdr;
struct bcm2835_mbox_tag_physical_w_h physical_w_h;
u32 end_tag;
};
int bcm2835_power_on_module(u32 module)
{
ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1);
@ -65,3 +72,22 @@ int bcm2835_get_mmc_clock(void)
return msg_clk->get_clock_rate.body.resp.rate_hz;
}
int bcm2835_get_video_size(int *widthp, int *heightp)
{
ALLOC_CACHE_ALIGN_BUFFER(struct msg_query, msg_query, 1);
int ret;
BCM2835_MBOX_INIT_HDR(msg_query);
BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_query->physical_w_h,
GET_PHYSICAL_W_H);
ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_query->hdr);
if (ret) {
printf("bcm2835: Could not query display resolution\n");
return ret;
}
*widthp = msg_query->physical_w_h.body.resp.width;
*heightp = msg_query->physical_w_h.body.resp.height;
return 0;
}

20
drivers/video/bcm2835.c
View file

@ -9,6 +9,7 @@
#include <memalign.h>
#include <phys2bus.h>
#include <asm/arch/mbox.h>
#include <asm/arch/msg.h>
#include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR;
@ -18,12 +19,6 @@ 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;
u32 end_tag;
};
struct msg_setup {
struct bcm2835_mbox_hdr hdr;
struct bcm2835_mbox_tag_physical_w_h physical_w_h;
@ -40,27 +35,18 @@ struct msg_setup {
void lcd_ctrl_init(void *lcdbase)
{
ALLOC_CACHE_ALIGN_BUFFER(struct msg_query, msg_query, 1);
ALLOC_CACHE_ALIGN_BUFFER(struct msg_setup, msg_setup, 1);
int ret;
u32 w, h;
int w, h;
u32 fb_start, fb_end;
debug("bcm2835: Query resolution...\n");
BCM2835_MBOX_INIT_HDR(msg_query);
BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_query->physical_w_h,
GET_PHYSICAL_W_H);
ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_query->hdr);
ret = bcm2835_get_video_size(&w, &h);
if (ret) {
printf("bcm2835: Could not query display resolution\n");
/* FIXME: How to disable the LCD to prevent errors? hang()? */
return;
}
w = msg_query->physical_w_h.body.resp.width;
h = msg_query->physical_w_h.body.resp.height;
debug("bcm2835: Setting up display for %d x %d\n", w, h);
BCM2835_MBOX_INIT_HDR(msg_setup);