[U-Boot] [PATCH v6 08/11] samsung: misc: Add LCD download menu.

[Przemyslaw Marczak <p.marczak@samsung.com>]

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>

---
Changes v2:
- remove keys.h  - definitions should be in boards headers
- add misc.h
- code cleanup
- extend commit msg by more informations

Changes v3:
- none

Changes v4:
- code cleanup in board/samsung/common/misc.c
- add command result check
- clear PWR button interrupt flag after command finish to prevent immediatel
  mode exit in mode_leave_menu() function.
- introduce MODE_CMD_ARGC - max number of command arguments
- split array mode_cmd[] to mode_cmd[][] with separated arguments
- command support checking is now achieved without preprocessor ifdefs

Changes v5:
- remove duplicated headers
- add #ifdef CONFIG_GENERIC_MMC
- change udelay to mdelay

Changes v6:
- none

 board/samsung/common/misc.c |  344 +++++++++++++++++++++++++++++++++++++++++++
 include/samsung/misc.h      |   17 +++
 2 files changed, 361 insertions(+)

diff --git a/board/samsung/common/misc.c b/board/samsung/common/misc.c
index 15775e3..643f957 100644
--- a/board/samsung/common/misc.c
+++ b/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)
diff --git a/include/samsung/misc.h b/include/samsung/misc.h
index 8ea9223..1a6d47f 100644
--- a/include/samsung/misc.h
+++ b/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
-- 
1.7.9.5