samsung: misc: Add LCD download menu.

This simple LCD menu allows run one of download mode on device
without writing on console or for fast and easy upgrade.

This feature check user keys combination at boot:
- power key + volume up - download menu
- power key + volume down - thor mode (without menu)

New configs:
- CONFIG_LCD_MENU
- CONFIG_LCD_MENU_BOARD

For proper effect this feature needs following definitions:

Power key:
- KEY_PWR_PMIC_NAME - (string) pmic which supports power key check

Register address:
- KEY_PWR_STATUS_REG
- KEY_PWR_INTERRUPT_REG

Register power key mask:
- KEY_PWR_STATUS_MASK
- KEY_PWR_INTERRUPT_MASK

Gpio numbers:
- KEY_PWR_INTERRUPT_MASK
- KEY_VOL_DOWN_GPIO

Functions needs to be called:
- keys_init() - for set proper gpio direction
- check_boot_mode() - menu - main function

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

board/samsung/common/misc.c

@@ -9,6 +9,350 @@
 #include <lcd.h>
 #include <libtizen.h>
 #include <samsung/misc.h>
+#include <errno.h>
+#include <version.h>
+#include <asm/sizes.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/gpio.h>
+#include <asm/gpio.h>
+#include <linux/input.h>
+#include <power/pmic.h>
+#include <mmc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_LCD_MENU
+static int power_key_pressed(u32 reg)
+{
+	struct pmic *pmic;
+	u32 status;
+	u32 mask;
+
+	pmic = pmic_get(KEY_PWR_PMIC_NAME);
+	if (!pmic) {
+		printf("%s: Not found\n", KEY_PWR_PMIC_NAME);
+		return 0;
+	}
+
+	if (pmic_probe(pmic))
+		return 0;
+
+	if (reg == KEY_PWR_STATUS_REG)
+		mask = KEY_PWR_STATUS_MASK;
+	else
+		mask = KEY_PWR_INTERRUPT_MASK;
+
+	if (pmic_reg_read(pmic, reg, &status))
+		return 0;
+
+	return !!(status & mask);
+}
+
+static int key_pressed(int key)
+{
+	int value;
+
+	switch (key) {
+	case KEY_POWER:
+		value = power_key_pressed(KEY_PWR_INTERRUPT_REG);
+		break;
+	case KEY_VOLUMEUP:
+		value = !gpio_get_value(KEY_VOL_UP_GPIO);
+		break;
+	case KEY_VOLUMEDOWN:
+		value = !gpio_get_value(KEY_VOL_DOWN_GPIO);
+		break;
+	default:
+		value = 0;
+		break;
+	}
+
+	return value;
+}
+
+static int check_keys(void)
+{
+	int keys = 0;
+
+	if (key_pressed(KEY_POWER))
+		keys += KEY_POWER;
+	if (key_pressed(KEY_VOLUMEUP))
+		keys += KEY_VOLUMEUP;
+	if (key_pressed(KEY_VOLUMEDOWN))
+		keys += KEY_VOLUMEDOWN;
+
+	return keys;
+}
+
+/*
+ * 0 BOOT_MODE_INFO
+ * 1 BOOT_MODE_THOR
+ * 2 BOOT_MODE_UMS
+ * 3 BOOT_MODE_DFU
+ * 4 BOOT_MODE_EXIT
+ */
+static char *
+mode_name[BOOT_MODE_EXIT + 1] = {
+	"DEVICE",
+	"THOR",
+	"UMS",
+	"DFU",
+	"EXIT"
+};
+
+static char *
+mode_info[BOOT_MODE_EXIT + 1] = {
+	"info",
+	"downloader",
+	"mass storage",
+	"firmware update",
+	"and run normal boot"
+};
+
+#define MODE_CMD_ARGC	4
+
+static char *
+mode_cmd[BOOT_MODE_EXIT + 1][MODE_CMD_ARGC] = {
+	{"", "", "", ""},
+	{"thor", "0", "mmc", "0"},
+	{"ums", "0", "mmc", "0"},
+	{"dfu", "0", "mmc", "0"},
+	{"", "", "", ""},
+};
+
+static void display_board_info(void)
+{
+#ifdef CONFIG_GENERIC_MMC
+	struct mmc *mmc = find_mmc_device(0);
+#endif
+	vidinfo_t *vid = &panel_info;
+
+	lcd_position_cursor(4, 4);
+
+	lcd_printf("%s\n\t", U_BOOT_VERSION);
+	lcd_puts("\n\t\tBoard Info:\n");
+#ifdef CONFIG_SYS_BOARD
+	lcd_printf("\tBoard name: %s\n", CONFIG_SYS_BOARD);
+#endif
+#ifdef CONFIG_REVISION_TAG
+	lcd_printf("\tBoard rev: %u\n", get_board_rev());
+#endif
+	lcd_printf("\tDRAM banks: %u\n", CONFIG_NR_DRAM_BANKS);
+	lcd_printf("\tDRAM size: %u MB\n", gd->ram_size / SZ_1M);
+
+#ifdef CONFIG_GENERIC_MMC
+	if (mmc) {
+		if (!mmc->capacity)
+			mmc_init(mmc);
+
+		lcd_printf("\teMMC size: %llu MB\n", mmc->capacity / SZ_1M);
+	}
+#endif
+	if (vid)
+		lcd_printf("\tDisplay resolution: %u x % u\n",
+			   vid->vl_col, vid->vl_row);
+
+	lcd_printf("\tDisplay BPP: %u\n", 1 << vid->vl_bpix);
+}
+
+static int mode_leave_menu(int mode)
+{
+	char *exit_option;
+	char *exit_boot = "boot";
+	char *exit_back = "back";
+	cmd_tbl_t *cmd;
+	int cmd_result;
+	int cmd_repeatable;
+	int leave;
+
+	lcd_clear();
+
+	switch (mode) {
+	case BOOT_MODE_EXIT:
+		return 1;
+	case BOOT_MODE_INFO:
+		display_board_info();
+		exit_option = exit_back;
+		leave = 0;
+		break;
+	default:
+		cmd = find_cmd(mode_cmd[mode][0]);
+		if (cmd) {
+			printf("Enter: %s %s\n", mode_name[mode],
+						 mode_info[mode]);
+			lcd_printf("\n\n\t%s %s\n", mode_name[mode],
+						    mode_info[mode]);
+			lcd_puts("\n\tDo not turn off device before finish!\n");
+
+			cmd_result = cmd_process(0, MODE_CMD_ARGC,
+						 *(mode_cmd + mode),
+						 &cmd_repeatable, NULL);
+
+			if (cmd_result == CMD_RET_SUCCESS) {
+				printf("Command finished\n");
+				lcd_clear();
+				lcd_printf("\n\n\t%s finished\n",
+					   mode_name[mode]);
+
+				exit_option = exit_boot;
+				leave = 1;
+			} else {
+				printf("Command error\n");
+				lcd_clear();
+				lcd_printf("\n\n\t%s command error\n",
+					   mode_name[mode]);
+
+				exit_option = exit_back;
+				leave = 0;
+			}
+		} else {
+			lcd_puts("\n\n\tThis mode is not supported.\n");
+			exit_option = exit_back;
+			leave = 0;
+		}
+	}
+
+	lcd_printf("\n\n\tPress POWER KEY to %s\n", exit_option);
+
+	/* Clear PWR button Rising edge interrupt status flag */
+	power_key_pressed(KEY_PWR_INTERRUPT_REG);
+
+	/* Wait for PWR key */
+	while (!key_pressed(KEY_POWER))
+		mdelay(1);
+
+	lcd_clear();
+	return leave;
+}
+
+static void display_download_menu(int mode)
+{
+	char *selection[BOOT_MODE_EXIT + 1];
+	int i;
+
+	for (i = 0; i <= BOOT_MODE_EXIT; i++)
+		selection[i] = "[  ]";
+
+	selection[mode] = "[=>]";
+
+	lcd_clear();
+	lcd_printf("\n\t\tDownload Mode Menu\n");
+
+	for (i = 0; i <= BOOT_MODE_EXIT; i++)
+		lcd_printf("\t%s  %s - %s\n\n", selection[i],
+						mode_name[i],
+						mode_info[i]);
+}
+
+static void download_menu(void)
+{
+	int mode = 0;
+	int last_mode = 0;
+	int run;
+	int key;
+
+	display_download_menu(mode);
+
+	while (1) {
+		run = 0;
+
+		if (mode != last_mode)
+			display_download_menu(mode);
+
+		last_mode = mode;
+		mdelay(100);
+
+		key = check_keys();
+		switch (key) {
+		case KEY_POWER:
+			run = 1;
+			break;
+		case KEY_VOLUMEUP:
+			if (mode > 0)
+				mode--;
+			break;
+		case KEY_VOLUMEDOWN:
+			if (mode < BOOT_MODE_EXIT)
+				mode++;
+			break;
+		default:
+			break;
+		}
+
+		if (run) {
+			if (mode_leave_menu(mode))
+				break;
+
+			display_download_menu(mode);
+		}
+	}
+
+	lcd_clear();
+}
+
+static void display_mode_info(void)
+{
+	lcd_position_cursor(4, 4);
+	lcd_printf("%s\n", U_BOOT_VERSION);
+	lcd_puts("\nDownload Mode Menu\n");
+#ifdef CONFIG_SYS_BOARD
+	lcd_printf("Board name: %s\n", CONFIG_SYS_BOARD);
+#endif
+	lcd_printf("Press POWER KEY to display MENU options.");
+}
+
+static int boot_menu(void)
+{
+	int key = 0;
+	int timeout = 10;
+
+	display_mode_info();
+
+	while (timeout--) {
+		lcd_printf("\rNormal boot will start in: %d seconds.", timeout);
+		mdelay(1000);
+
+		key = key_pressed(KEY_POWER);
+		if (key)
+			break;
+	}
+
+	lcd_clear();
+
+	/* If PWR pressed - show download menu */
+	if (key) {
+		printf("Power pressed - go to download menu\n");
+		download_menu();
+		printf("Download mode exit.\n");
+	}
+
+	return 0;
+}
+
+void check_boot_mode(void)
+{
+	int pwr_key;
+
+	pwr_key = power_key_pressed(KEY_PWR_STATUS_REG);
+	if (!pwr_key)
+		return;
+
+	/* Clear PWR button Rising edge interrupt status flag */
+	power_key_pressed(KEY_PWR_INTERRUPT_REG);
+
+	if (key_pressed(KEY_VOLUMEUP))
+		boot_menu();
+	else if (key_pressed(KEY_VOLUMEDOWN))
+		mode_leave_menu(BOOT_MODE_THOR);
+}
+
+void keys_init(void)
+{
+	/* Set direction to input */
+	gpio_direction_input(KEY_VOL_UP_GPIO);
+	gpio_direction_input(KEY_VOL_DOWN_GPIO);
+}
+#endif /* CONFIG_LCD_MENU */
 
 #ifdef CONFIG_CMD_BMP
 void draw_logo(void)

include/samsung/misc.h

@@ -1,6 +1,23 @@
 #ifndef __SAMSUNG_MISC_COMMON_H__
 #define __SAMSUNG_MISC_COMMON_H__
 
+#ifdef CONFIG_LCD_MENU
+enum {
+	BOOT_MODE_INFO,
+	BOOT_MODE_THOR,
+	BOOT_MODE_UMS,
+	BOOT_MODE_DFU,
+	BOOT_MODE_EXIT,
+};
+
+#ifdef CONFIG_REVISION_TAG
+u32 get_board_rev(void);
+#endif
+
+void keys_init(void);
+void check_boot_mode(void);
+#endif /* CONFIG_LCD_MENU */
+
 #ifdef CONFIG_CMD_BMP
 void draw_logo(void);
 #endif