cm-t35: move the display code to common place

Compulab OMAP3 boards use the same display initialization code.
Move the display initialization code to live under board/compulab/common
directory.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Tested-by: Nikita Kiryanov <nikita@compulab.co.il>

2 files changed, 0 insertions, 408 deletions

diff --git a/board/compulab/cm_t35/Makefile b/board/compulab/cm_t35/Makefile
index 8b922b3d7e..213423ec65 100644
--- a/board/compulab/cm_t35/Makefile
+++ b/board/compulab/cm_t35/Makefile
@@ -11,8 +11,6 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS-$(CONFIG_LCD) += display.o
-
 COBJS	:= cm_t35.o leds.o $(COBJS-y)
 
 SRCS	:= $(COBJS:.o=.c)
diff --git a/board/compulab/cm_t35/display.c b/board/compulab/cm_t35/display.c
deleted file mode 100644
index fae8d95403..0000000000
--- a/board/compulab/cm_t35/display.c
+++ /dev/null
@@ -1,406 +0,0 @@
-/*
- * (C) Copyright 2012 - 2013 CompuLab, Ltd. <www.compulab.co.il>
- *
- * Authors: Nikita Kiryanov <nikita@compulab.co.il>
- *
- * Parsing code based on linux/drivers/video/pxafb.c
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/gpio.h>
-#include <asm/io.h>
-#include <stdio_dev.h>
-#include <asm/arch/dss.h>
-#include <lcd.h>
-#include <asm/arch-omap3/dss.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-enum display_type {
-	NONE,
-	DVI,
-	DVI_CUSTOM,
-};
-
-#define CMAP_ADDR	0x80100000
-
-/*
- * The frame buffer is allocated before we have the chance to parse user input.
- * To make sure enough memory is allocated for all resolutions, we define
- * vl_{col | row} to the maximal resolution supported by OMAP3.
- */
-vidinfo_t panel_info = {
-	.vl_col  = 1400,
-	.vl_row  = 1050,
-	.vl_bpix = LCD_BPP,
-	.cmap = (ushort *)CMAP_ADDR,
-};
-
-static struct panel_config panel_cfg;
-static enum display_type lcd_def;
-
-/*
- * A note on DVI presets;
- * U-Boot can convert 8 bit BMP data to 16 bit BMP data, and OMAP DSS can
- * convert 16 bit data into 24 bit data. Thus, GFXFORMAT_RGB16 allows us to
- * support two BMP types with one setting.
- */
-static const struct panel_config preset_dvi_640X480 = {
-	.lcd_size	= PANEL_LCD_SIZE(640, 480),
-	.timing_h	= DSS_HBP(48) | DSS_HFP(16) | DSS_HSW(96),
-	.timing_v	= DSS_VBP(33) | DSS_VFP(10) | DSS_VSW(2),
-	.divisor	= 12 | (1 << 16),
-	.data_lines	= LCD_INTERFACE_24_BIT,
-	.panel_type	= ACTIVE_DISPLAY,
-	.load_mode	= 2,
-	.gfx_format	= GFXFORMAT_RGB16,
-};
-
-static const struct panel_config preset_dvi_800X600 = {
-	.lcd_size	= PANEL_LCD_SIZE(800, 600),
-	.timing_h	= DSS_HBP(88) | DSS_HFP(40) | DSS_HSW(128),
-	.timing_v	= DSS_VBP(23) | DSS_VFP(1) | DSS_VSW(4),
-	.divisor	= 8 | (1 << 16),
-	.data_lines	= LCD_INTERFACE_24_BIT,
-	.panel_type	= ACTIVE_DISPLAY,
-	.load_mode	= 2,
-	.gfx_format	= GFXFORMAT_RGB16,
-};
-
-static const struct panel_config preset_dvi_1024X768 = {
-	.lcd_size	= PANEL_LCD_SIZE(1024, 768),
-	.timing_h	= DSS_HBP(160) | DSS_HFP(24) | DSS_HSW(136),
-	.timing_v	= DSS_VBP(29) | DSS_VFP(3) | DSS_VSW(6),
-	.divisor	= 5 | (1 << 16),
-	.data_lines	= LCD_INTERFACE_24_BIT,
-	.panel_type	= ACTIVE_DISPLAY,
-	.load_mode	= 2,
-	.gfx_format	= GFXFORMAT_RGB16,
-};
-
-static const struct panel_config preset_dvi_1152X864 = {
-	.lcd_size	= PANEL_LCD_SIZE(1152, 864),
-	.timing_h	= DSS_HBP(256) | DSS_HFP(64) | DSS_HSW(128),
-	.timing_v	= DSS_VBP(32) | DSS_VFP(1) | DSS_VSW(3),
-	.divisor	= 3 | (1 << 16),
-	.data_lines	= LCD_INTERFACE_24_BIT,
-	.panel_type	= ACTIVE_DISPLAY,
-	.load_mode	= 2,
-	.gfx_format	= GFXFORMAT_RGB16,
-};
-
-static const struct panel_config preset_dvi_1280X960 = {
-	.lcd_size	= PANEL_LCD_SIZE(1280, 960),
-	.timing_h	= DSS_HBP(312) | DSS_HFP(96) | DSS_HSW(112),
-	.timing_v	= DSS_VBP(36) | DSS_VFP(1) | DSS_VSW(3),
-	.divisor	= 3 | (1 << 16),
-	.data_lines	= LCD_INTERFACE_24_BIT,
-	.panel_type	= ACTIVE_DISPLAY,
-	.load_mode	= 2,
-	.gfx_format	= GFXFORMAT_RGB16,
-};
-
-static const struct panel_config preset_dvi_1280X1024 = {
-	.lcd_size	= PANEL_LCD_SIZE(1280, 1024),
-	.timing_h	= DSS_HBP(248) | DSS_HFP(48) | DSS_HSW(112),
-	.timing_v	= DSS_VBP(38) | DSS_VFP(1) | DSS_VSW(3),
-	.divisor	= 3 | (1 << 16),
-	.data_lines	= LCD_INTERFACE_24_BIT,
-	.panel_type	= ACTIVE_DISPLAY,
-	.load_mode	= 2,
-	.gfx_format	= GFXFORMAT_RGB16,
-};
-
-/*
- * set_resolution_params()
- *
- * Due to usage of multiple display related APIs resolution data is located in
- * more than one place. This function updates them all.
- */
-static void set_resolution_params(int x, int y)
-{
-	panel_cfg.lcd_size = PANEL_LCD_SIZE(x, y);
-	panel_info.vl_col = x;
-	panel_info.vl_row = y;
-	lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
-}
-
-static void set_preset(const struct panel_config preset, int x_res, int y_res)
-{
-	panel_cfg = preset;
-	set_resolution_params(x_res, y_res);
-}
-
-static enum display_type set_dvi_preset(const struct panel_config preset,
-					int x_res, int y_res)
-{
-	set_preset(preset, x_res, y_res);
-	return DVI;
-}
-
-/*
- * parse_mode() - parse the mode parameter of custom lcd settings
- *
- * @mode:	<res_x>x<res_y>
- *
- * Returns -1 on error, 0 on success.
- */
-static int parse_mode(const char *mode)
-{
-	unsigned int modelen = strlen(mode);
-	int res_specified = 0;
-	unsigned int xres = 0, yres = 0;
-	int yres_specified = 0;
-	int i;
-
-	for (i = modelen - 1; i >= 0; i--) {
-		switch (mode[i]) {
-		case 'x':
-			if (!yres_specified) {
-				yres = simple_strtoul(&mode[i + 1], NULL, 0);
-				yres_specified = 1;
-			} else {
-				goto done_parsing;
-			}
-
-			break;
-		case '0' ... '9':
-			break;
-		default:
-			goto done_parsing;
-		}
-	}
-
-	if (i < 0 && yres_specified) {
-		xres = simple_strtoul(mode, NULL, 0);
-		res_specified = 1;
-	}
-
-done_parsing:
-	if (res_specified) {
-		set_resolution_params(xres, yres);
-	} else {
-		printf("LCD: invalid mode: %s\n", mode);
-		return -1;
-	}
-
-	return 0;
-}
-
-#define PIXEL_CLK_NUMERATOR (26 * 432 / 39)
-/*
- * parse_pixclock() - Parse the pixclock parameter of custom lcd settings
- *
- * @pixclock:	the desired pixel clock
- *
- * Returns -1 on error, 0 on success.
- *
- * Handling the pixel_clock:
- *
- * Pixel clock is defined in the OMAP35x TRM as follows:
- * pixel_clock =
- * (SYS_CLK * 2 * PRCM.CM_CLKSEL2_PLL[18:8]) /
- * (DSS.DISPC_DIVISOR[23:16] * DSS.DISPC_DIVISOR[6:0] *
- * PRCM.CM_CLKSEL_DSS[4:0] * (PRCM.CM_CLKSEL2_PLL[6:0] + 1))
- *
- * In practice, this means that in order to set the
- * divisor for the desired pixel clock one needs to
- * solve the following equation:
- *
- * 26 * 432 / (39 * <pixel_clock>) = DSS.DISPC_DIVISOR[6:0]
- *
- * NOTE: the explicit equation above is reduced. Do not
- * try to infer anything from these numbers.
- */
-static int parse_pixclock(char *pixclock)
-{
-	int divisor, pixclock_val;
-	char *pixclk_start = pixclock;
-
-	pixclock_val = simple_strtoul(pixclock, &pixclock, 10);
-	divisor = DIV_ROUND_UP(PIXEL_CLK_NUMERATOR, pixclock_val);
-	/* 0 and 1 are illegal values for PCD */
-	if (divisor <= 1)
-		divisor = 2;
-
-	panel_cfg.divisor = divisor | (1 << 16);
-	if (pixclock[0] != '\0') {
-		printf("LCD: invalid value for pixclock:%s\n", pixclk_start);
-		return -1;
-	}
-
-	return 0;
-}
-
-/*
- * parse_setting() - parse a single setting of custom lcd parameters
- *
- * @setting:	The custom lcd setting <name>:<value>
- *
- * Returns -1 on failure, 0 on success.
- */
-static int parse_setting(char *setting)
-{
-	int num_val;
-	char *setting_start = setting;
-
-	if (!strncmp(setting, "mode:", 5)) {
-		return parse_mode(setting + 5);
-	} else if (!strncmp(setting, "pixclock:", 9)) {
-		return parse_pixclock(setting + 9);
-	} else if (!strncmp(setting, "left:", 5)) {
-		num_val = simple_strtoul(setting + 5, &setting, 0);
-		panel_cfg.timing_h |= DSS_HBP(num_val);
-	} else if (!strncmp(setting, "right:", 6)) {
-		num_val = simple_strtoul(setting + 6, &setting, 0);
-		panel_cfg.timing_h |= DSS_HFP(num_val);
-	} else if (!strncmp(setting, "upper:", 6)) {
-		num_val = simple_strtoul(setting + 6, &setting, 0);
-		panel_cfg.timing_v |= DSS_VBP(num_val);
-	} else if (!strncmp(setting, "lower:", 6)) {
-		num_val = simple_strtoul(setting + 6, &setting, 0);
-		panel_cfg.timing_v |= DSS_VFP(num_val);
-	} else if (!strncmp(setting, "hsynclen:", 9)) {
-		num_val = simple_strtoul(setting + 9, &setting, 0);
-		panel_cfg.timing_h |= DSS_HSW(num_val);
-	} else if (!strncmp(setting, "vsynclen:", 9)) {
-		num_val = simple_strtoul(setting + 9, &setting, 0);
-		panel_cfg.timing_v |= DSS_VSW(num_val);
-	} else if (!strncmp(setting, "hsync:", 6)) {
-		if (simple_strtoul(setting + 6, &setting, 0) == 0)
-			panel_cfg.pol_freq |= DSS_IHS;
-		else
-			panel_cfg.pol_freq &= ~DSS_IHS;
-	} else if (!strncmp(setting, "vsync:", 6)) {
-		if (simple_strtoul(setting + 6, &setting, 0) == 0)
-			panel_cfg.pol_freq |= DSS_IVS;
-		else
-			panel_cfg.pol_freq &= ~DSS_IVS;
-	} else if (!strncmp(setting, "outputen:", 9)) {
-		if (simple_strtoul(setting + 9, &setting, 0) == 0)
-			panel_cfg.pol_freq |= DSS_IEO;
-		else
-			panel_cfg.pol_freq &= ~DSS_IEO;
-	} else if (!strncmp(setting, "pixclockpol:", 12)) {
-		if (simple_strtoul(setting + 12, &setting, 0) == 0)
-			panel_cfg.pol_freq |= DSS_IPC;
-		else
-			panel_cfg.pol_freq &= ~DSS_IPC;
-	} else if (!strncmp(setting, "active", 6)) {
-		panel_cfg.panel_type = ACTIVE_DISPLAY;
-		return 0; /* Avoid sanity check below */
-	} else if (!strncmp(setting, "passive", 7)) {
-		panel_cfg.panel_type = PASSIVE_DISPLAY;
-		return 0; /* Avoid sanity check below */
-	} else if (!strncmp(setting, "display:", 8)) {
-		if (!strncmp(setting + 8, "dvi", 3)) {
-			lcd_def = DVI_CUSTOM;
-			return 0; /* Avoid sanity check below */
-		}
-	} else {
-		printf("LCD: unknown option %s\n", setting_start);
-		return -1;
-	}
-
-	if (setting[0] != '\0') {
-		printf("LCD: invalid value for %s\n", setting_start);
-		return -1;
-	}
-
-	return 0;
-}
-
-/*
- * env_parse_customlcd() - parse custom lcd params from an environment variable.
- *
- * @custom_lcd_params:	The environment variable containing the lcd params.
- *
- * Returns -1 on failure, 0 on success.
- */
-static int parse_customlcd(char *custom_lcd_params)
-{
-	char params_cpy[160];
-	char *setting;
-
-	strncpy(params_cpy, custom_lcd_params, 160);
-	setting = strtok(params_cpy, ",");
-	while (setting) {
-		if (parse_setting(setting) < 0)
-			return -1;
-
-		setting = strtok(NULL, ",");
-	}
-
-	/* Currently we don't support changing this via custom lcd params */
-	panel_cfg.data_lines = LCD_INTERFACE_24_BIT;
-	panel_cfg.gfx_format = GFXFORMAT_RGB16; /* See dvi predefines note */
-
-	return 0;
-}
-
-/*
- * env_parse_displaytype() - parse display type.
- *
- * Parses the environment variable "displaytype", which contains the
- * name of the display type or preset, in which case it applies its
- * configurations.
- *
- * Returns the type of display that was specified.
- */
-static enum display_type env_parse_displaytype(char *displaytype)
-{
-	if (!strncmp(displaytype, "dvi640x480", 10))
-		return set_dvi_preset(preset_dvi_640X480, 640, 480);
-	else if (!strncmp(displaytype, "dvi800x600", 10))
-		return set_dvi_preset(preset_dvi_800X600, 800, 600);
-	else if (!strncmp(displaytype, "dvi1024x768", 11))
-		return set_dvi_preset(preset_dvi_1024X768, 1024, 768);
-	else if (!strncmp(displaytype, "dvi1152x864", 11))
-		return set_dvi_preset(preset_dvi_1152X864, 1152, 864);
-	else if (!strncmp(displaytype, "dvi1280x960", 11))
-		return set_dvi_preset(preset_dvi_1280X960, 1280, 960);
-	else if (!strncmp(displaytype, "dvi1280x1024", 12))
-		return set_dvi_preset(preset_dvi_1280X1024, 1280, 1024);
-
-	return NONE;
-}
-
-void lcd_ctrl_init(void *lcdbase)
-{
-	struct prcm *prcm = (struct prcm *)PRCM_BASE;
-	char *custom_lcd;
-	char *displaytype = getenv("displaytype");
-
-	if (displaytype == NULL)
-		return;
-
-	lcd_def = env_parse_displaytype(displaytype);
-	/* If we did not recognize the preset, check if it's an env variable */
-	if (lcd_def == NONE) {
-		custom_lcd = getenv(displaytype);
-		if (custom_lcd == NULL || parse_customlcd(custom_lcd) < 0)
-			return;
-	}
-
-	panel_cfg.frame_buffer = lcdbase;
-	omap3_dss_panel_config(&panel_cfg);
-	/*
-	 * Pixel clock is defined with many divisions and only few
-	 * multiplications of the system clock. Since DSS FCLK divisor is set
-	 * to 16 by default, we need to set it to a smaller value, like 3
-	 * (chosen via trial and error).
-	 */
-	clrsetbits_le32(&prcm->clksel_dss, 0xF, 3);
-}
-
-void lcd_enable(void)
-{
-	if (lcd_def == DVI || lcd_def == DVI_CUSTOM) {
-		gpio_direction_output(54, 0); /* Turn on DVI */
-		omap3_dss_enable();
-	}
-}
-
-void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue) {}