[J-u-boot.git] / drivers / video / bcm2835.c

/*
 * (C) Copyright 2012 Stephen Warren
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <lcd.h>
#include <memalign.h>
#include <asm/arch/mbox.h>
#include <asm/global_data.h>

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;
	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;
};

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;

	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);
	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);
	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 = 16;
	BCM2835_MBOX_INIT_TAG(&msg_setup->pixel_order, SET_PIXEL_ORDER);
	msg_setup->pixel_order.body.req.order = BCM2835_MBOX_PIXEL_ORDER_BGR;
	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;

	debug("bcm2835: Final resolution is %d x %d\n", w, h);

	panel_info.vl_col = w;
	panel_info.vl_row = h;
	panel_info.vl_bpix = LCD_COLOR16;

	gd->fb_base = msg_setup->allocate_buffer.body.resp.fb_address;
}

void lcd_enable(void)
{
}

int lcd_get_size(int *line_length)
{
	*line_length = bcm2835_pitch;
	return *line_length * panel_info.vl_row;
}
Commit	Line	Data
6be3c9fc SW	1	/*
	2	* (C) Copyright 2012 Stephen Warren
	3	*
1a459660	4	* SPDX-License-Identifier: GPL-2.0+
6be3c9fc SW	5	*/
	6
	7	#include <common.h>
	8	#include <lcd.h>
cf92e05c	9	#include <memalign.h>
6be3c9fc SW	10	#include <asm/arch/mbox.h>
	11	#include <asm/global_data.h>
	12
	13	DECLARE_GLOBAL_DATA_PTR;
	14
	15	/* Global variables that lcd.c expects to exist */
6be3c9fc	16	vidinfo_t panel_info;
6be3c9fc	17
44376eff AH	18	static u32 bcm2835_pitch;
44376eff AH	19
6be3c9fc SW	20	struct msg_query {
	21	struct bcm2835_mbox_hdr hdr;
	22	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
	23	u32 end_tag;
	24	};
	25
	26	struct msg_setup {
	27	struct bcm2835_mbox_hdr hdr;
	28	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
	29	struct bcm2835_mbox_tag_virtual_w_h virtual_w_h;
	30	struct bcm2835_mbox_tag_depth depth;
	31	struct bcm2835_mbox_tag_pixel_order pixel_order;
	32	struct bcm2835_mbox_tag_alpha_mode alpha_mode;
	33	struct bcm2835_mbox_tag_virtual_offset virtual_offset;
	34	struct bcm2835_mbox_tag_overscan overscan;
	35	struct bcm2835_mbox_tag_allocate_buffer allocate_buffer;
44376eff	36	struct bcm2835_mbox_tag_pitch pitch;
6be3c9fc SW	37	u32 end_tag;
	38	};
	39
	40	void lcd_ctrl_init(void *lcdbase)
	41	{
927753ae AS	42	ALLOC_CACHE_ALIGN_BUFFER(struct msg_query, msg_query, 1);
927753ae AS	43	ALLOC_CACHE_ALIGN_BUFFER(struct msg_setup, msg_setup, 1);
6be3c9fc SW	44	int ret;
	45	u32 w, h;
	46
	47	debug("bcm2835: Query resolution...\n");
	48
	49	BCM2835_MBOX_INIT_HDR(msg_query);
	50	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_query->physical_w_h,
	51	GET_PHYSICAL_W_H);
	52	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_query->hdr);
	53	if (ret) {
	54	printf("bcm2835: Could not query display resolution\n");
	55	/* FIXME: How to disable the LCD to prevent errors? hang()? */
	56	return;
	57	}
	58
	59	w = msg_query->physical_w_h.body.resp.width;
	60	h = msg_query->physical_w_h.body.resp.height;
	61
	62	debug("bcm2835: Setting up display for %d x %d\n", w, h);
	63
	64	BCM2835_MBOX_INIT_HDR(msg_setup);
	65	BCM2835_MBOX_INIT_TAG(&msg_setup->physical_w_h, SET_PHYSICAL_W_H);
	66	msg_setup->physical_w_h.body.req.width = w;
	67	msg_setup->physical_w_h.body.req.height = h;
	68	BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_w_h, SET_VIRTUAL_W_H);
	69	msg_setup->virtual_w_h.body.req.width = w;
	70	msg_setup->virtual_w_h.body.req.height = h;
	71	BCM2835_MBOX_INIT_TAG(&msg_setup->depth, SET_DEPTH);
	72	msg_setup->depth.body.req.bpp = 16;
	73	BCM2835_MBOX_INIT_TAG(&msg_setup->pixel_order, SET_PIXEL_ORDER);
	74	msg_setup->pixel_order.body.req.order = BCM2835_MBOX_PIXEL_ORDER_BGR;
	75	BCM2835_MBOX_INIT_TAG(&msg_setup->alpha_mode, SET_ALPHA_MODE);
	76	msg_setup->alpha_mode.body.req.alpha = BCM2835_MBOX_ALPHA_MODE_IGNORED;
	77	BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_offset, SET_VIRTUAL_OFFSET);
	78	msg_setup->virtual_offset.body.req.x = 0;
	79	msg_setup->virtual_offset.body.req.y = 0;
	80	BCM2835_MBOX_INIT_TAG(&msg_setup->overscan, SET_OVERSCAN);
	81	msg_setup->overscan.body.req.top = 0;
	82	msg_setup->overscan.body.req.bottom = 0;
	83	msg_setup->overscan.body.req.left = 0;
	84	msg_setup->overscan.body.req.right = 0;
	85	BCM2835_MBOX_INIT_TAG(&msg_setup->allocate_buffer, ALLOCATE_BUFFER);
	86	msg_setup->allocate_buffer.body.req.alignment = 0x100;
44376eff	87	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_setup->pitch, GET_PITCH);
6be3c9fc SW	88
	89	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_setup->hdr);
	90	if (ret) {
	91	printf("bcm2835: Could not configure display\n");
	92	/* FIXME: How to disable the LCD to prevent errors? hang()? */
	93	return;
	94	}
	95
	96	w = msg_setup->physical_w_h.body.resp.width;
	97	h = msg_setup->physical_w_h.body.resp.height;
44376eff	98	bcm2835_pitch = msg_setup->pitch.body.resp.pitch;
6be3c9fc SW	99
	100	debug("bcm2835: Final resolution is %d x %d\n", w, h);
	101
	102	panel_info.vl_col = w;
	103	panel_info.vl_row = h;
	104	panel_info.vl_bpix = LCD_COLOR16;
	105
	106	gd->fb_base = msg_setup->allocate_buffer.body.resp.fb_address;
6be3c9fc SW	107	}
	108
	109	void lcd_enable(void)
	110	{
	111	}
44376eff AH	112
	113	int lcd_get_size(int *line_length)
	114	{
	115	*line_length = bcm2835_pitch;
	116	return line_length panel_info.vl_row;
	117	}