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

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Add a function to set the video parameters 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 16:23:41 -06:00 committed by Tom Rini
parent 2e4170b63b
commit 7cac2fced7
3 changed files with 88 additions and 58 deletions
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17
arch/arm/mach-bcm283x/include/mach/msg.h
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@ -31,4 +31,21 @@ int bcm2835_get_mmc_clock(void);
*/
int bcm2835_get_video_size(int *widthp, int *heightp);
/**
* bcm2835_set_video_params() - set the video parameters
*
* @widthp: Video width to request (returns the actual width selected)
* @heightp: Video height to request (returns the actual height selected)
* @depth_bpp: Requested bit depth
* @pixel_order: Pixel order to use (BCM2835_MBOX_PIXEL_ORDER_...)
* @alpha_mode: Alpha transparency mode to use (BCM2835_MBOX_ALPHA_MODE_...)
* @fb_basep: Returns base address of frame buffer
* @fb_sizep: Returns size of frame buffer
* @pitchp: Returns number of bytes in each frame buffer line
* @return 0 if OK, -ve on error
*/
int bcm2835_set_video_params(int *widthp, int *heightp, int depth_bpp,
int pixel_order, int alpha_mode, ulong *fb_basep,
ulong *fb_sizep, int *pitchp);
#endif

61
arch/arm/mach-bcm283x/msg.c
View File

@ -27,6 +27,20 @@ struct msg_query {
u32 end_tag;
};
struct msg_setup {
struct bcm2835_mbox_hdr hdr;
struct bcm2835_mbox_tag_physical_w_h physical_w_h;
struct bcm2835_mbox_tag_virtual_w_h virtual_w_h;
struct bcm2835_mbox_tag_depth depth;
struct bcm2835_mbox_tag_pixel_order pixel_order;
struct bcm2835_mbox_tag_alpha_mode alpha_mode;
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;
};
int bcm2835_power_on_module(u32 module)
{
ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1);
@ -91,3 +105,50 @@ int bcm2835_get_video_size(int *widthp, int *heightp)
return 0;
}
int bcm2835_set_video_params(int *widthp, int *heightp, int depth_bpp,
int pixel_order, int alpha_mode, ulong *fb_basep,
ulong *fb_sizep, int *pitchp)
{
ALLOC_CACHE_ALIGN_BUFFER(struct msg_setup, msg_setup, 1);
int ret;
BCM2835_MBOX_INIT_HDR(msg_setup);
BCM2835_MBOX_INIT_TAG(&msg_setup->physical_w_h, SET_PHYSICAL_W_H);
msg_setup->physical_w_h.body.req.width = *widthp;
msg_setup->physical_w_h.body.req.height = *heightp;
BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_w_h, SET_VIRTUAL_W_H);
msg_setup->virtual_w_h.body.req.width = *widthp;
msg_setup->virtual_w_h.body.req.height = *heightp;
BCM2835_MBOX_INIT_TAG(&msg_setup->depth, SET_DEPTH);
msg_setup->depth.body.req.bpp = 32;
BCM2835_MBOX_INIT_TAG(&msg_setup->pixel_order, SET_PIXEL_ORDER);
msg_setup->pixel_order.body.req.order = pixel_order;
BCM2835_MBOX_INIT_TAG(&msg_setup->alpha_mode, SET_ALPHA_MODE);
msg_setup->alpha_mode.body.req.alpha = alpha_mode;
BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_offset, SET_VIRTUAL_OFFSET);
msg_setup->virtual_offset.body.req.x = 0;
msg_setup->virtual_offset.body.req.y = 0;
BCM2835_MBOX_INIT_TAG(&msg_setup->overscan, SET_OVERSCAN);
msg_setup->overscan.body.req.top = 0;
msg_setup->overscan.body.req.bottom = 0;
msg_setup->overscan.body.req.left = 0;
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) {
printf("bcm2835: Could not configure display\n");
return ret;
}
*widthp = msg_setup->physical_w_h.body.resp.width;
*heightp = msg_setup->physical_w_h.body.resp.height;
*pitchp = msg_setup->pitch.body.resp.pitch;
*fb_basep = bus_to_phys(
msg_setup->allocate_buffer.body.resp.fb_address);
*fb_sizep = msg_setup->allocate_buffer.body.resp.fb_size;
return 0;
}

68
drivers/video/bcm2835.c
View File

@ -17,28 +17,13 @@ DECLARE_GLOBAL_DATA_PTR;
/* Global variables that lcd.c expects to exist */
vidinfo_t panel_info;
static u32 bcm2835_pitch;
struct msg_setup {
struct bcm2835_mbox_hdr hdr;
struct bcm2835_mbox_tag_physical_w_h physical_w_h;
struct bcm2835_mbox_tag_virtual_w_h virtual_w_h;
struct bcm2835_mbox_tag_depth depth;
struct bcm2835_mbox_tag_pixel_order pixel_order;
struct bcm2835_mbox_tag_alpha_mode alpha_mode;
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;
};
static int bcm2835_pitch;
void lcd_ctrl_init(void *lcdbase)
{
ALLOC_CACHE_ALIGN_BUFFER(struct msg_setup, msg_setup, 1);
int ret;
int w, h;
u32 fb_start, fb_end;
ulong fb_base, fb_size, fb_start, fb_end;
debug("bcm2835: Query resolution...\n");
ret = bcm2835_get_video_size(&w, &h);
@ -48,42 +33,9 @@ void lcd_ctrl_init(void *lcdbase)
}
debug("bcm2835: Setting up display for %d x %d\n", w, h);
BCM2835_MBOX_INIT_HDR(msg_setup);
BCM2835_MBOX_INIT_TAG(&msg_setup->physical_w_h, SET_PHYSICAL_W_H);
msg_setup->physical_w_h.body.req.width = w;
msg_setup->physical_w_h.body.req.height = h;
BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_w_h, SET_VIRTUAL_W_H);
msg_setup->virtual_w_h.body.req.width = w;
msg_setup->virtual_w_h.body.req.height = h;
BCM2835_MBOX_INIT_TAG(&msg_setup->depth, SET_DEPTH);
msg_setup->depth.body.req.bpp = 32;
BCM2835_MBOX_INIT_TAG(&msg_setup->pixel_order, SET_PIXEL_ORDER);
msg_setup->pixel_order.body.req.order = BCM2835_MBOX_PIXEL_ORDER_RGB;
BCM2835_MBOX_INIT_TAG(&msg_setup->alpha_mode, SET_ALPHA_MODE);
msg_setup->alpha_mode.body.req.alpha = BCM2835_MBOX_ALPHA_MODE_IGNORED;
BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_offset, SET_VIRTUAL_OFFSET);
msg_setup->virtual_offset.body.req.x = 0;
msg_setup->virtual_offset.body.req.y = 0;
BCM2835_MBOX_INIT_TAG(&msg_setup->overscan, SET_OVERSCAN);
msg_setup->overscan.body.req.top = 0;
msg_setup->overscan.body.req.bottom = 0;
msg_setup->overscan.body.req.left = 0;
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) {
printf("bcm2835: Could not configure display\n");
/* FIXME: How to disable the LCD to prevent errors? hang()? */
return;
}
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;
ret = bcm2835_set_video_params(&w, &h, 32, BCM2835_MBOX_PIXEL_ORDER_RGB,
BCM2835_MBOX_ALPHA_MODE_IGNORED,
&fb_base, &fb_size, &bcm2835_pitch);
debug("bcm2835: Final resolution is %d x %d\n", w, h);
@ -91,15 +43,14 @@ void lcd_ctrl_init(void *lcdbase)
panel_info.vl_row = h;
panel_info.vl_bpix = LCD_COLOR32;
gd->fb_base = bus_to_phys(
msg_setup->allocate_buffer.body.resp.fb_address);
gd->fb_base = fb_base;
/* Enable dcache for the frame buffer */
fb_start = gd->fb_base & ~(MMU_SECTION_SIZE - 1);
fb_end = gd->fb_base + msg_setup->allocate_buffer.body.resp.fb_size;
fb_start = fb_base & ~(MMU_SECTION_SIZE - 1);
fb_end = fb_base + fb_size;
fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
DCACHE_WRITEBACK);
DCACHE_WRITEBACK);
lcd_set_flush_dcache(1);
}
@ -110,5 +61,6 @@ void lcd_enable(void)
int lcd_get_size(int *line_length)
{
*line_length = bcm2835_pitch;
return *line_length * panel_info.vl_row;
}