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/*
* Copyright (c) 2011 The Chromium OS Authors.
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <lcd.h>
#include <fdt_decode.h>
#include <asm/clocks.h>
#include <asm/arch/clock.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/power.h>
#include <asm/arch/pwfm.h>
#include <asm/arch/display.h>
DECLARE_GLOBAL_DATA_PTR;
int lcd_line_length;
int lcd_color_fg;
int lcd_color_bg;
void *lcd_base; /* Start of framebuffer memory */
void *lcd_console_address; /* Start of console buffer */
short console_col;
short console_row;
vidinfo_t panel_info = {
/* Insert a value here so that we don't end up in the BSS */
.vl_col = -1,
};
char lcd_cursor_enabled = 0; /* set initial value to false */
ushort lcd_cursor_width;
ushort lcd_cursor_height;
static void clk_init(void)
{
/* TODO: Put this into the FDT when we have clock support there */
clock_start_periph_pll(PERIPH_ID_3D, CLOCK_ID_MEMORY, CLK_300M);
clock_start_periph_pll(PERIPH_ID_2D, CLOCK_ID_MEMORY, CLK_300M);
clock_start_periph_pll(PERIPH_ID_HOST1X, CLOCK_ID_PERIPH, CLK_144M);
clock_start_periph_pll(PERIPH_ID_DISP1, CLOCK_ID_PERIPH, CLK_216M);
clock_start_periph_pll(PERIPH_ID_PWM, CLOCK_ID_SFROM32KHZ, CLK_32768);
}
/*
* The PINMUX macro is used per board to setup the pinmux configuration.
*/
#define PINMUX(grp, mux, pupd, tri) \
{PINGRP_##grp, PMUX_FUNC_##mux, PMUX_PULL_##pupd, PMUX_TRI_##tri}
struct pingroup_config pinmux_cros_1[] = {
PINMUX(GPU, PWM, NORMAL, NORMAL),
PINMUX(LD0, DISPA, NORMAL, NORMAL),
PINMUX(LD1, DISPA, NORMAL, NORMAL),
PINMUX(LD10, DISPA, NORMAL, NORMAL),
PINMUX(LD11, DISPA, NORMAL, NORMAL),
PINMUX(LD12, DISPA, NORMAL, NORMAL),
PINMUX(LD13, DISPA, NORMAL, NORMAL),
PINMUX(LD14, DISPA, NORMAL, NORMAL),
PINMUX(LD15, DISPA, NORMAL, NORMAL),
PINMUX(LD16, DISPA, NORMAL, NORMAL),
PINMUX(LD17, DISPA, NORMAL, NORMAL),
PINMUX(LD2, DISPA, NORMAL, NORMAL),
PINMUX(LD3, DISPA, NORMAL, NORMAL),
PINMUX(LD4, DISPA, NORMAL, NORMAL),
PINMUX(LD5, DISPA, NORMAL, NORMAL),
PINMUX(LD6, DISPA, NORMAL, NORMAL),
PINMUX(LD7, DISPA, NORMAL, NORMAL),
PINMUX(LD8, DISPA, NORMAL, NORMAL),
PINMUX(LD9, DISPA, NORMAL, NORMAL),
PINMUX(LDI, DISPA, NORMAL, NORMAL),
PINMUX(LHP0, DISPA, NORMAL, NORMAL),
PINMUX(LHP1, DISPA, NORMAL, NORMAL),
PINMUX(LHP2, DISPA, NORMAL, NORMAL),
PINMUX(LHS, DISPA, NORMAL, NORMAL),
PINMUX(LM0, RSVD4, NORMAL, NORMAL),
PINMUX(LPP, DISPA, NORMAL, NORMAL),
PINMUX(LPW0, RSVD4, NORMAL, NORMAL),
PINMUX(LPW1, RSVD4, NORMAL, TRISTATE),
PINMUX(LPW2, RSVD4, NORMAL, NORMAL),
PINMUX(LSC0, DISPA, NORMAL, NORMAL),
PINMUX(LSPI, DISPA, NORMAL, NORMAL),
PINMUX(LVP1, DISPA, NORMAL, NORMAL),
PINMUX(LVS, DISPA, NORMAL, NORMAL),
PINMUX(SLXD, SPDIF, NORMAL, NORMAL),
};
/* Initialize the Tegra LCD panel and controller */
void init_lcd(struct fdt_lcd *config)
{
clk_init();
/* TODO: put pinmux into the FDT */
pinmux_config_table(pinmux_cros_1, ARRAY_SIZE(pinmux_cros_1));
power_enable_partition(POWERP_3D);
fdt_setup_gpios(config->gpios);
tegra2_display_register(config);
/* Enable PWM at 15/16 high, divider 1 */
pwfm_setup(config->pwfm, 1, 0xdf, 1);
}
void lcd_cursor_size(ushort width, ushort height)
{
lcd_cursor_width = width;
lcd_cursor_height = height;
}
void lcd_toggle_cursor(void)
{
ushort x, y;
uchar *dest;
ushort row;
x = console_col * lcd_cursor_width;
y = console_row * lcd_cursor_height;
dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) /
8);
for (row = 0; row < lcd_cursor_height; ++row, dest += lcd_line_length) {
ushort *d = (ushort *)dest;
ushort color;
int i;
for (i = 0; i < lcd_cursor_width; ++i) {
color = *d;
color ^= lcd_color_fg;
*d = color;
++d;
}
}
}
void lcd_cursor_on(void)
{
lcd_cursor_enabled = 1;
lcd_toggle_cursor();
}
void lcd_cursor_off(void)
{
lcd_cursor_enabled = 0;
lcd_toggle_cursor();
}
char lcd_is_cursor_enabled(void)
{
return lcd_cursor_enabled;
}
static void update_panel_size(struct fdt_lcd *config)
{
panel_info.vl_col = config->width;
panel_info.vl_row = config->height;
panel_info.vl_bpix = config->log2_bpp;
}
/*
* Main init function called by lcd driver.
* Inits and then prints test pattern if required.
*/
void lcd_ctrl_init(void *lcdbase)
{
struct fdt_lcd config;
/* get panel details */
if (fdt_decode_lcd(gd->blob, &config)) {
printf("No LCD information in device tree\n");
return;
}
/*
* The device tree allows for the frame buffer to be specified if
* needed, but for now, U-Boot will set this. This may change if
* we find that Linux is unable to use the address that U-Boot picks,
* and this causes screen flicker.
*/
config.frame_buffer = (u32)lcd_base;
update_panel_size(&config);
/* call board specific hw init */
init_lcd(&config);
debug("LCD frame buffer at %p\n", lcd_base);
}
ulong calc_fbsize(void)
{
return (panel_info.vl_col * panel_info.vl_row *
NBITS(panel_info.vl_bpix)) / 8;
}
void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
{
}
void lcd_enable(void)
{
}
void lcd_early_init(const void *blob)
{
struct fdt_lcd config;
/* get panel details */
if (!fdt_decode_lcd(gd->blob, &config))
update_panel_size(&config);
}
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