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authorAlbert ARIBAUD <albert.u.boot@aribaud.net>2013-03-28 18:50:01 +0100
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2013-03-28 18:50:01 +0100
commit009d75ccc11d27b9a083375a88bb93cb746b4800 (patch)
tree12abe9fcf437d58b73ee1fa8d422548560deaae5 /drivers/video
parent417c55803118eb8e350d5ab8ba6583fb39f4e2e3 (diff)
parentd53e340edf65ff253d3a7b06ebe60501045892e3 (diff)
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Merge branch 'u-boot/master' into 'u-boot-arm/master'
Conflicts: drivers/spi/tegra20_sflash.c include/fdtdec.h lib/fdtdec.c
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/Makefile1
-rw-r--r--drivers/video/bcm2835.c127
2 files changed, 128 insertions, 0 deletions
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 170a358..e8cecca 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -40,6 +40,7 @@ COBJS-$(CONFIG_S6E63D6) += s6e63d6.o
COBJS-$(CONFIG_LD9040) += ld9040.o
COBJS-$(CONFIG_SED156X) += sed156x.o
COBJS-$(CONFIG_VIDEO_AMBA) += amba.o
+COBJS-$(CONFIG_VIDEO_BCM2835) += bcm2835.o
COBJS-$(CONFIG_VIDEO_COREBOOT) += coreboot_fb.o
COBJS-$(CONFIG_VIDEO_CT69000) += ct69000.o videomodes.o
COBJS-$(CONFIG_VIDEO_DA8XX) += da8xx-fb.o videomodes.o
diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c
new file mode 100644
index 0000000..1e9a84a
--- /dev/null
+++ b/drivers/video/bcm2835.c
@@ -0,0 +1,127 @@
+/*
+ * (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.
+ */
+
+#include <common.h>
+#include <lcd.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;
+
+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;
+ 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);
+ 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;
+
+ 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;
+
+ 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;
+ lcd_base = (void *)gd->fb_base;
+}
+
+void lcd_enable(void)
+{
+}