text: /*
   * linux/arch/arm/mach-omap1/board-nokia770.c
   *
   * Modified from board-generic.c
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  #include <linux/clkdev.h>
  #include <linux/irq.h>
  #include <linux/gpio.h>
  #include <linux/kernel.h>
  #include <linux/init.h>
  #include <linux/mutex.h>
  #include <linux/platform_device.h>
  #include <linux/input.h>
  #include <linux/omapfb.h>
  
  #include <linux/spi/spi.h>
  #include <linux/spi/ads7846.h>
  #include <linux/workqueue.h>
  #include <linux/delay.h>
  
  #include <linux/platform_data/keypad-omap.h>
  #include <linux/platform_data/lcd-mipid.h>
  #include <linux/platform_data/gpio-omap.h>
  #include <linux/platform_data/i2c-cbus-gpio.h>
  
  #include <asm/mach-types.h>
  #include <asm/mach/arch.h>
  #include <asm/mach/map.h>
  
  #include <mach/mux.h>
  
  #include <mach/hardware.h>
  #include <mach/usb.h>
  
  #include "common.h"
  #include "clock.h"
  #include "mmc.h"
  
  #define ADS7846_PENDOWN_GPIO	15
  
  static const unsigned int nokia770_keymap[] = {
  	KEY(1, 0, GROUP_0 | KEY_UP),
  	KEY(2, 0, GROUP_1 | KEY_F5),
  	KEY(0, 1, GROUP_0 | KEY_LEFT),
  	KEY(1, 1, GROUP_0 | KEY_ENTER),
  	KEY(2, 1, GROUP_0 | KEY_RIGHT),
  	KEY(0, 2, GROUP_1 | KEY_ESC),
  	KEY(1, 2, GROUP_0 | KEY_DOWN),
  	KEY(2, 2, GROUP_1 | KEY_F4),
  	KEY(0, 3, GROUP_2 | KEY_F7),
  	KEY(1, 3, GROUP_2 | KEY_F8),
  	KEY(2, 3, GROUP_2 | KEY_F6),
  };
  
  static struct resource nokia770_kp_resources[] = {
  	[0] = {
  		.start	= INT_KEYBOARD,
  		.end	= INT_KEYBOARD,
  		.flags	= IORESOURCE_IRQ,
  	},
  };
  
  static const struct matrix_keymap_data nokia770_keymap_data = {
  	.keymap		= nokia770_keymap,
  	.keymap_size	= ARRAY_SIZE(nokia770_keymap),
  };
  
  static struct omap_kp_platform_data nokia770_kp_data = {
  	.rows		= 8,
  	.cols		= 8,
  	.keymap_data	= &nokia770_keymap_data,
  	.delay		= 4,
  };
  
  static struct platform_device nokia770_kp_device = {
  	.name		= "omap-keypad",
  	.id		= -1,
  	.dev		= {
  		.platform_data = &nokia770_kp_data,
  	},
  	.num_resources	= ARRAY_SIZE(nokia770_kp_resources),
  	.resource	= nokia770_kp_resources,
  };
  
  static struct platform_device *nokia770_devices[] __initdata = {
  	&nokia770_kp_device,
  };
  
  static void mipid_shutdown(struct mipid_platform_data *pdata)
  {
  	if (pdata->nreset_gpio != -1) {
  		printk(KERN_INFO "shutdown LCD\n");
  		gpio_set_value(pdata->nreset_gpio, 0);
  		msleep(120);
  	}
  }
  
  static struct mipid_platform_data nokia770_mipid_platform_data = {
  	.shutdown = mipid_shutdown,
  };
  
  static struct omap_lcd_config nokia770_lcd_config __initdata = {
  	.ctrl_name	= "hwa742",
  };
  
  static void __init mipid_dev_init(void)
  {
  	nokia770_mipid_platform_data.nreset_gpio = 13;
  	nokia770_mipid_platform_data.data_lines = 16;
  
  	omapfb_set_lcd_config(&nokia770_lcd_config);
  }
  
  static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
  	.x_max		= 0x0fff,
  	.y_max		= 0x0fff,
  	.x_plate_ohms	= 180,
  	.pressure_max	= 255,
  	.debounce_max	= 10,
  	.debounce_tol	= 3,
  	.debounce_rep	= 1,
  	.gpio_pendown	= ADS7846_PENDOWN_GPIO,
  };
  
  static struct spi_board_info nokia770_spi_board_info[] __initdata = {
  	[0] = {
  		.modalias       = "lcd_mipid",
  		.bus_num        = 2,
  		.chip_select    = 3,
  		.max_speed_hz   = 12000000,
  		.platform_data	= &nokia770_mipid_platform_data,
  	},
  	[1] = {
  		.modalias       = "ads7846",
  		.bus_num        = 2,
  		.chip_select    = 0,
  		.max_speed_hz   = 2500000,
  		.platform_data	= &nokia770_ads7846_platform_data,
  	},
  };
  
  static void __init hwa742_dev_init(void)
  {
  	clk_add_alias("hwa_sys_ck", NULL, "bclk", NULL);
  }
  
  /* assume no Mini-AB port */
  
  static struct omap_usb_config nokia770_usb_config __initdata = {
  	.otg		= 1,
  	.register_host	= 1,
  	.register_dev	= 1,
  	.hmc_mode	= 16,
  	.pins[0]	= 6,
  	.extcon		= "tahvo-usb",
  };
  
  #if IS_ENABLED(CONFIG_MMC_OMAP)
  
  #define NOKIA770_GPIO_MMC_POWER		41
  #define NOKIA770_GPIO_MMC_SWITCH	23
  
  static int nokia770_mmc_set_power(struct device *dev, int slot, int power_on,
  				int vdd)
  {
  	gpio_set_value(NOKIA770_GPIO_MMC_POWER, power_on);
  	return 0;
  }
  
  static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
  {
  	return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
  }
  
  static struct omap_mmc_platform_data nokia770_mmc2_data = {
  	.nr_slots                       = 1,
  	.max_freq                       = 12000000,
  	.slots[0]       = {
  		.set_power		= nokia770_mmc_set_power,
  		.get_cover_state	= nokia770_mmc_get_cover_state,
  		.ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
  		.name                   = "mmcblk",
  	},
  };
  
  static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
  
  static void __init nokia770_mmc_init(void)
  {
  	int ret;
  
  	ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
  	if (ret < 0)
  		return;
  	gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);
  
  	ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
  	if (ret < 0) {
  		gpio_free(NOKIA770_GPIO_MMC_POWER);
  		return;
  	}
  	gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);
  
  	/* Only the second MMC controller is used */
  	nokia770_mmc_data[1] = &nokia770_mmc2_data;
  	omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
  }
  
  #else
  static inline void nokia770_mmc_init(void)
  {
  }
  #endif
  
  #if IS_ENABLED(CONFIG_I2C_CBUS_GPIO)
  static struct i2c_cbus_platform_data nokia770_cbus_data = {
  	.clk_gpio = OMAP_MPUIO(9),
  	.dat_gpio = OMAP_MPUIO(10),
  	.sel_gpio = OMAP_MPUIO(11),
  };
  
  static struct platform_device nokia770_cbus_device = {
  	.name   = "i2c-cbus-gpio",
  	.id     = 2,
  	.dev    = {
  		.platform_data = &nokia770_cbus_data,
  	},
  };
  
  static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
  	{
  		I2C_BOARD_INFO("retu", 0x01),
  	},
  	{
  		I2C_BOARD_INFO("tahvo", 0x02),
  	},
  };
  
  static void __init nokia770_cbus_init(void)
  {
  	const int retu_irq_gpio = 62;
  	const int tahvo_irq_gpio = 40;
  
  	if (gpio_request_one(retu_irq_gpio, GPIOF_IN, "Retu IRQ"))
  		return;
  	if (gpio_request_one(tahvo_irq_gpio, GPIOF_IN, "Tahvo IRQ")) {
  		gpio_free(retu_irq_gpio);
  		return;
  	}
  	irq_set_irq_type(gpio_to_irq(retu_irq_gpio), IRQ_TYPE_EDGE_RISING);
  	irq_set_irq_type(gpio_to_irq(tahvo_irq_gpio), IRQ_TYPE_EDGE_RISING);
  	nokia770_i2c_board_info_2[0].irq = gpio_to_irq(retu_irq_gpio);
  	nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio);
  	i2c_register_board_info(2, nokia770_i2c_board_info_2,
  				ARRAY_SIZE(nokia770_i2c_board_info_2));
  	platform_device_register(&nokia770_cbus_device);
  }
  #else /* CONFIG_I2C_CBUS_GPIO */
  static void __init nokia770_cbus_init(void)
  {
  }
  #endif /* CONFIG_I2C_CBUS_GPIO */
  
  static void __init omap_nokia770_init(void)
  {
  	/* On Nokia 770, the SleepX signal is masked with an
  	 * MPUIO line by default.  It has to be unmasked for it
  	 * to become functional */
  
  	/* SleepX mask direction */
  	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
  	/* Unmask SleepX signal */
  	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
  
  	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
  	nokia770_spi_board_info[1].irq = gpio_to_irq(15);
  	spi_register_board_info(nokia770_spi_board_info,
  				ARRAY_SIZE(nokia770_spi_board_info));
  	omap_serial_init();
  	omap_register_i2c_bus(1, 100, NULL, 0);
  	hwa742_dev_init();
  	mipid_dev_init();
  	omap1_usb_init(&nokia770_usb_config);
  	nokia770_mmc_init();
  	nokia770_cbus_init();
  }
  
  MACHINE_START(NOKIA770, "Nokia 770")
  	.atag_offset	= 0x100,
  	.map_io		= omap16xx_map_io,
  	.init_early     = omap1_init_early,
  	.init_irq	= omap1_init_irq,
  	.handle_irq	= omap1_handle_irq,
  	.init_machine	= omap_nokia770_init,
  	.init_late	= omap1_init_late,
  	.init_time	= omap1_timer_init,
  	.restart	= omap1_restart,
  MACHINE_END
  