dm: x86: video: Add a driver-model driver for ivybridge graphics

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

diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c
index 1e9a84ac1ff4ff0226eaf3f294214bbf611a272d..cd605e632cb606c84754c24b6ca1590db9a22ab7 100644 (file)
--- a/drivers/video/bcm2835.c
+++ b/drivers/video/bcm2835.c
@@ -1,39 +1,22 @@
 /*
  * (C) Copyright 2012 Stephen Warren
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <lcd.h>
+#include <memalign.h>
+#include <phys2bus.h>
 #include <asm/arch/mbox.h>
 #include <asm/global_data.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
 /* Global variables that lcd.c expects to exist */
-int lcd_line_length;
-int lcd_color_fg;
-int lcd_color_bg;
-void *lcd_base;
-void *lcd_console_address;
-short console_col;
-short console_row;
 vidinfo_t panel_info;
-char lcd_cursor_enabled;
-ushort lcd_cursor_width;
-ushort lcd_cursor_height;
+
+static u32 bcm2835_pitch;
 
 struct msg_query {
        struct bcm2835_mbox_hdr hdr;
@@ -51,15 +34,17 @@ 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;
 };
 
 void lcd_ctrl_init(void *lcdbase)
 {
-       ALLOC_ALIGN_BUFFER(struct msg_query, msg_query, 1, 16);
-       ALLOC_ALIGN_BUFFER(struct msg_setup, msg_setup, 1, 16);
+       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;
+       u32 fb_start, fb_end;
 
        debug("bcm2835: Query resolution...\n");
 
@@ -101,6 +86,7 @@ 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) {
@@ -111,6 +97,7 @@ 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);
 
@@ -118,10 +105,24 @@ void lcd_ctrl_init(void *lcdbase)
        panel_info.vl_row = h;
        panel_info.vl_bpix = LCD_COLOR16;
 
-       gd->fb_base = msg_setup->allocate_buffer.body.resp.fb_address;
-       lcd_base = (void *)gd->fb_base;
+       gd->fb_base = bus_to_phys(
+               msg_setup->allocate_buffer.body.resp.fb_address);
+
+       /* 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_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
+       mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
+               DCACHE_WRITEBACK);
+       lcd_set_flush_dcache(1);
 }
 
 void lcd_enable(void)
 {
 }
+
+int lcd_get_size(int *line_length)
+{
+       *line_length = bcm2835_pitch;
+       return *line_length * panel_info.vl_row;
+}