From 4c33e9b356e622f1e3d60324080011588b6a50ca Mon Sep 17 00:00:00 2001 From: Puneet Saxena Date: Tue, 17 Jan 2012 15:10:52 +0530 Subject: video: tegra: Rename tegra2.c to tegra.c Enables common LCD support for Tegra2 and Tegra3 BUG=chromium-os:23496 TEST=Built ok for Cardhu, Waluigi and Seaboard. Change-Id: I39af6a01956a3f1545e7cccfa9c23a3f81d3dc0c Signed-off-by: Puneet Saxena Reviewed-on: https://gerrit.chromium.org/gerrit/14693 --- drivers/video/Makefile | 2 +- drivers/video/tegra.c | 351 +++++++++++++++++++++++++++++++++++++++++++++++++ drivers/video/tegra2.c | 351 ------------------------------------------------- 3 files changed, 352 insertions(+), 352 deletions(-) create mode 100644 drivers/video/tegra.c delete mode 100644 drivers/video/tegra2.c diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 08d2811e78..e2e94e8d7c 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -40,7 +40,7 @@ COBJS-$(CONFIG_VIDEO_SED13806) += sed13806.o COBJS-$(CONFIG_SED156X) += sed156x.o COBJS-$(CONFIG_VIDEO_SM501) += sm501.o COBJS-$(CONFIG_VIDEO_SMI_LYNXEM) += smiLynxEM.o videomodes.o -COBJS-$(CONFIG_VIDEO_TEGRA) += tegra2.o +COBJS-$(CONFIG_VIDEO_TEGRA) += tegra.o COBJS-$(CONFIG_VIDEO_VCXK) += bus_vcxk.o COBJS-$(CONFIG_VIDEO_COREBOOT) += coreboot_fb.o COBJS-$(CONFIG_VIDEO_TEST) += test_lcd.o diff --git a/drivers/video/tegra.c b/drivers/video/tegra.c new file mode 100644 index 0000000000..2bdb392a7a --- /dev/null +++ b/drivers/video/tegra.c @@ -0,0 +1,351 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/* These are the stages we go throuh in enabling the LCD */ +enum stage_t { + STAGE_START, + STAGE_LVDS, + STAGE_BACKLIGHT_VDD, + STAGE_PWFM, + STAGE_BACKLIGHT_EN, + STAGE_DONE, +}; + +static enum stage_t stage; /* Current stage we are at */ +static unsigned long timer_next; /* Time we can move onto next stage */ +static struct fdt_lcd config; /* Our LCD config, set up in handle_stage() */ + +enum { + /* Maximum LCD size we support */ + LCD_MAX_WIDTH = 1366, + LCD_MAX_HEIGHT = 768, + LCD_MAX_LOG2_BPP = 4, /* 16 bpp */ +}; + +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; /* 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_CGENERAL, CLK_600M); + 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(); + power_enable_partition(POWERP_3D); + tegra2_display_register(config); +} + +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) +{ + int line_length, size; + + /* + * The framebuffer address should be specified in the device tree. + * This FDT value should be the same as the one defined in Linux kernel; + * otherwise, it causes screen flicker. The FDT value overrides the + * framebuffer allocated at the top of memory by board_init_f(). + * + * If the framebuffer address is not defined in the FDT, falls back to + * use the address allocated by board_init_f(). + */ + if (config.frame_buffer != ADDR_T_NONE) { + gd->fb_base = config.frame_buffer; + lcd_base = (void *)(gd->fb_base); + } else { + config.frame_buffer = (u32)lcd_base; + } + + /* Make sure that we can acommodate the selected LCD */ + assert(config.width <= LCD_MAX_WIDTH); + assert(config.height <= LCD_MAX_HEIGHT); + assert(config.log2_bpp <= LCD_MAX_LOG2_BPP); + if (config.width <= LCD_MAX_WIDTH && config.height <= LCD_MAX_HEIGHT && + config.log2_bpp <= LCD_MAX_LOG2_BPP) + update_panel_size(&config); + size = lcd_get_size(&line_length), + + /* call board specific hw init */ + init_lcd(&config); + + /* For write-through or cache off, change the LCD memory region */ + if (!(config.cache_type & FDT_LCD_CACHE_WRITE_BACK)) + mmu_set_region_dcache(config.frame_buffer, size, + config.cache_type & FDT_LCD_CACHE_WRITE_THROUGH ? + DCACHE_WRITETHROUGH : DCACHE_OFF); + + /* Enable flushing after LCD writes if requested */ + lcd_set_flush_dcache(config.cache_type & FDT_LCD_CACHE_FLUSH); + + 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_early_init(const void *blob) +{ + /* + * Go with the maximum size for now. We will fix this up after + * relocation. These values are only used for memory alocation. + */ + panel_info.vl_col = LCD_MAX_WIDTH; + panel_info.vl_row = LCD_MAX_HEIGHT; + panel_info.vl_bpix = LCD_MAX_LOG2_BPP; +} + +static int handle_stage(const void *blob) +{ + /* do the things for this stage */ + switch (stage) { + case STAGE_START: + /* get panel details */ + if (fdt_decode_lcd(blob, &config)) { + printf("No LCD information in device tree\n"); + return -1; + } + + /* TODO: put pinmux into the FDT */ + pinmux_config_table(pinmux_cros_1, ARRAY_SIZE(pinmux_cros_1)); + + fdt_setup_gpio(&config.panel_vdd); + fdt_setup_gpio(&config.lvds_shutdown); + fdt_setup_gpio(&config.backlight_vdd); + fdt_setup_gpio(&config.backlight_en); + + gpio_set_value(config.panel_vdd.gpio, 1); + break; + + case STAGE_LVDS: + gpio_set_value(config.lvds_shutdown.gpio, 1); + break; + + case STAGE_BACKLIGHT_VDD: + if (fdt_gpio_isvalid(&config.backlight_vdd)) + gpio_set_value(config.backlight_vdd.gpio, 1); + break; + + case STAGE_PWFM: + /* Enable PWM at 15/16 high, divider 1 */ + pwfm_setup(config.pwfm, 1, 0xdf, 1); + break; + + case STAGE_BACKLIGHT_EN: + gpio_set_value(config.backlight_en.gpio, 1); + break; + + case STAGE_DONE: + break; + } + + /* set up timer for next stage */ + timer_next = timer_get_us() + config.panel_timings[stage] * 1000; + + /* move to next stage */ + stage++; + return 0; +} + +int tegra_lcd_check_next_stage(const void *blob, int wait) +{ + int err = 0; + + if (stage == STAGE_DONE) + return 0; + + bootstage_start(BOOTSTAGE_LCD_WAIT, "lcd_wait"); + do { + /* wait if we need to */ + debug("%s: stage %d\n", __func__, stage); + if (stage != STAGE_START) { + int delay = timer_next - timer_get_us(); + + if (delay > 0) { + if (wait) + udelay(delay); + else + return 0; + } + } + + if (handle_stage(blob)) + err = -1; + + } while (wait && !err && stage != STAGE_DONE); + bootstage_accum(BOOTSTAGE_LCD_WAIT); + return err; +} + +void lcd_enable(void) +{ + /* + * This will be done when tegra_lcd_check_next_stage() is called + * board_late_init(). + */ +} diff --git a/drivers/video/tegra2.c b/drivers/video/tegra2.c deleted file mode 100644 index 18bd47432e..0000000000 --- a/drivers/video/tegra2.c +++ /dev/null @@ -1,351 +0,0 @@ -/* - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -DECLARE_GLOBAL_DATA_PTR; - -/* These are the stages we go throuh in enabling the LCD */ -enum stage_t { - STAGE_START, - STAGE_LVDS, - STAGE_BACKLIGHT_VDD, - STAGE_PWFM, - STAGE_BACKLIGHT_EN, - STAGE_DONE, -}; - -static enum stage_t stage; /* Current stage we are at */ -static unsigned long timer_next; /* Time we can move onto next stage */ -static struct fdt_lcd config; /* Our LCD config, set up in handle_stage() */ - -enum { - /* Maximum LCD size we support */ - LCD_MAX_WIDTH = 1366, - LCD_MAX_HEIGHT = 768, - LCD_MAX_LOG2_BPP = 4, /* 16 bpp */ -}; - -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_CGENERAL, CLK_600M); - 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(); - power_enable_partition(POWERP_3D); - tegra2_display_register(config); -} - -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) -{ - int line_length, size; - - /* - * The framebuffer address should be specified in the device tree. - * This FDT value should be the same as the one defined in Linux kernel; - * otherwise, it causes screen flicker. The FDT value overrides the - * framebuffer allocated at the top of memory by board_init_f(). - * - * If the framebuffer address is not defined in the FDT, falls back to - * use the address allocated by board_init_f(). - */ - if (config.frame_buffer != ADDR_T_NONE) { - gd->fb_base = config.frame_buffer; - lcd_base = (void *)(gd->fb_base); - } else { - config.frame_buffer = (u32)lcd_base; - } - - /* Make sure that we can acommodate the selected LCD */ - assert(config.width <= LCD_MAX_WIDTH); - assert(config.height <= LCD_MAX_HEIGHT); - assert(config.log2_bpp <= LCD_MAX_LOG2_BPP); - if (config.width <= LCD_MAX_WIDTH && config.height <= LCD_MAX_HEIGHT && - config.log2_bpp <= LCD_MAX_LOG2_BPP) - update_panel_size(&config); - size = lcd_get_size(&line_length), - - /* call board specific hw init */ - init_lcd(&config); - - /* For write-through or cache off, change the LCD memory region */ - if (!(config.cache_type & FDT_LCD_CACHE_WRITE_BACK)) - mmu_set_region_dcache(config.frame_buffer, size, - config.cache_type & FDT_LCD_CACHE_WRITE_THROUGH ? - DCACHE_WRITETHROUGH : DCACHE_OFF); - - /* Enable flushing after LCD writes if requested */ - lcd_set_flush_dcache(config.cache_type & FDT_LCD_CACHE_FLUSH); - - 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_early_init(const void *blob) -{ - /* - * Go with the maximum size for now. We will fix this up after - * relocation. These values are only used for memory alocation. - */ - panel_info.vl_col = LCD_MAX_WIDTH; - panel_info.vl_row = LCD_MAX_HEIGHT; - panel_info.vl_bpix = LCD_MAX_LOG2_BPP; -} - -static int handle_stage(const void *blob) -{ - /* do the things for this stage */ - switch (stage) { - case STAGE_START: - /* get panel details */ - if (fdt_decode_lcd(blob, &config)) { - printf("No LCD information in device tree\n"); - return -1; - } - - /* TODO: put pinmux into the FDT */ - pinmux_config_table(pinmux_cros_1, ARRAY_SIZE(pinmux_cros_1)); - - fdt_setup_gpio(&config.panel_vdd); - fdt_setup_gpio(&config.lvds_shutdown); - fdt_setup_gpio(&config.backlight_vdd); - fdt_setup_gpio(&config.backlight_en); - - gpio_set_value(config.panel_vdd.gpio, 1); - break; - - case STAGE_LVDS: - gpio_set_value(config.lvds_shutdown.gpio, 1); - break; - - case STAGE_BACKLIGHT_VDD: - if (fdt_gpio_isvalid(&config.backlight_vdd)) - gpio_set_value(config.backlight_vdd.gpio, 1); - break; - - case STAGE_PWFM: - /* Enable PWM at 15/16 high, divider 1 */ - pwfm_setup(config.pwfm, 1, 0xdf, 1); - break; - - case STAGE_BACKLIGHT_EN: - gpio_set_value(config.backlight_en.gpio, 1); - break; - - case STAGE_DONE: - break; - } - - /* set up timer for next stage */ - timer_next = timer_get_us() + config.panel_timings[stage] * 1000; - - /* move to next stage */ - stage++; - return 0; -} - -int tegra_lcd_check_next_stage(const void *blob, int wait) -{ - int err = 0; - - if (stage == STAGE_DONE) - return 0; - - bootstage_start(BOOTSTAGE_LCD_WAIT, "lcd_wait"); - do { - /* wait if we need to */ - debug("%s: stage %d\n", __func__, stage); - if (stage != STAGE_START) { - int delay = timer_next - timer_get_us(); - - if (delay > 0) { - if (wait) - udelay(delay); - else - return 0; - } - } - - if (handle_stage(blob)) - err = -1; - - } while (wait && !err && stage != STAGE_DONE); - bootstage_accum(BOOTSTAGE_LCD_WAIT); - return err; -} - -void lcd_enable(void) -{ - /* - * This will be done when tegra_lcd_check_next_stage() is called - * board_late_init(). - */ -} -- cgit v1.2.3