[ARM] pxa: add basic support for the Aeronix Zipit Z2 handheld

This patch adds support for the Zipit Z2. The parts missing from this
patch are the battery support, SPI driver for the LCD and support for
the Silicon Serial ID chip.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 609 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/z2.c b/arch/arm/mach-pxa/z2.c
new file mode 100644
index 000000000000..c837318ec1fa
--- /dev/null
+++ b/arch/arm/mach-pxa/z2.c
@@ -0,0 +1,609 @@
+/*
+ *  linux/arch/arm/mach-pxa/z2.c
+ *
+ *  Support for the Zipit Z2 Handheld device.
+ *
+ *  Author:     Ken McGuire
+ *  Created:    Jan 25, 2009
+ *  Based on mainstone.c as modified for the Zipit Z2.
+ *
+ *  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/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/pwm_backlight.h>
+#include <linux/dma-mapping.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/libertas_spi.h>
+#include <linux/spi/lms283gf05.h>
+#include <linux/power_supply.h>
+#include <linux/mtd/physmap.h>
+#include <linux/gpio.h>
+#include <linux/gpio_keys.h>
+#include <linux/delay.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+#include <mach/pxa27x.h>
+#include <mach/mfp-pxa27x.h>
+#include <mach/z2.h>
+#include <mach/pxafb.h>
+#include <mach/mmc.h>
+#include <mach/pxa27x_keypad.h>
+#include <mach/pxa2xx_spi.h>
+
+#include <plat/i2c.h>
+
+#include "generic.h"
+#include "devices.h"
+
+/******************************************************************************
+ * Pin configuration
+ ******************************************************************************/
+static unsigned long z2_pin_config[] = {
+
+        /* LCD - 16bpp Active TFT */
+        GPIO58_LCD_LDD_0,
+        GPIO59_LCD_LDD_1,
+        GPIO60_LCD_LDD_2,
+        GPIO61_LCD_LDD_3,
+        GPIO62_LCD_LDD_4,
+        GPIO63_LCD_LDD_5,
+        GPIO64_LCD_LDD_6,
+        GPIO65_LCD_LDD_7,
+        GPIO66_LCD_LDD_8,
+        GPIO67_LCD_LDD_9,
+        GPIO68_LCD_LDD_10,
+        GPIO69_LCD_LDD_11,
+        GPIO70_LCD_LDD_12,
+        GPIO71_LCD_LDD_13,
+        GPIO72_LCD_LDD_14,
+        GPIO73_LCD_LDD_15,
+        GPIO74_LCD_FCLK,
+        GPIO75_LCD_LCLK,
+        GPIO76_LCD_PCLK,
+        GPIO77_LCD_BIAS,
+        GPIO19_GPIO,            /* LCD reset */
+        GPIO88_GPIO,            /* LCD chipselect */
+
+        /* PWM */
+        GPIO115_PWM1_OUT,       /* Keypad Backlight */
+        GPIO11_PWM2_OUT,        /* LCD Backlight */
+
+        /* MMC */
+        GPIO32_MMC_CLK,
+        GPIO112_MMC_CMD,
+        GPIO92_MMC_DAT_0,
+        GPIO109_MMC_DAT_1,
+        GPIO110_MMC_DAT_2,
+        GPIO111_MMC_DAT_3,
+        GPIO96_GPIO,            /* SD detect */
+
+        /* STUART */
+        GPIO46_STUART_RXD,
+        GPIO47_STUART_TXD,
+
+        /* Keypad */
+        GPIO100_KP_MKIN_0       | WAKEUP_ON_LEVEL_HIGH,
+        GPIO101_KP_MKIN_1       | WAKEUP_ON_LEVEL_HIGH,
+        GPIO102_KP_MKIN_2       | WAKEUP_ON_LEVEL_HIGH,
+        GPIO34_KP_MKIN_3        | WAKEUP_ON_LEVEL_HIGH,
+        GPIO38_KP_MKIN_4        | WAKEUP_ON_LEVEL_HIGH,
+        GPIO16_KP_MKIN_5        | WAKEUP_ON_LEVEL_HIGH,
+        GPIO17_KP_MKIN_6        | WAKEUP_ON_LEVEL_HIGH,
+        GPIO103_KP_MKOUT_0,
+        GPIO104_KP_MKOUT_1,
+        GPIO105_KP_MKOUT_2,
+        GPIO106_KP_MKOUT_3,
+        GPIO107_KP_MKOUT_4,
+        GPIO108_KP_MKOUT_5,
+        GPIO35_KP_MKOUT_6,
+        GPIO41_KP_MKOUT_7,
+
+        /* I2C */
+        GPIO117_I2C_SCL,
+        GPIO118_I2C_SDA,
+
+        /* SSP1 */
+        GPIO23_SSP1_SCLK,       /* SSP1_SCK */
+        GPIO25_SSP1_TXD,        /* SSP1_TXD */
+        GPIO26_SSP1_RXD,        /* SSP1_RXD */
+
+        /* SSP2 */
+        GPIO22_SSP2_SCLK,       /* SSP2_SCK */
+        GPIO13_SSP2_TXD,        /* SSP2_TXD */
+        GPIO40_SSP2_RXD,        /* SSP2_RXD */
+
+        /* LEDs */
+        GPIO10_GPIO,            /* WiFi LED */
+        GPIO83_GPIO,            /* Charging LED */
+        GPIO85_GPIO,            /* Charged LED */
+
+        /* I2S */
+        GPIO28_I2S_BITCLK_OUT,
+        GPIO29_I2S_SDATA_IN,
+        GPIO30_I2S_SDATA_OUT,
+        GPIO31_I2S_SYNC,
+        GPIO113_I2S_SYSCLK,
+
+        /* MISC */
+        GPIO0_GPIO,             /* AC power detect */
+        GPIO1_GPIO,             /* Power button */
+        GPIO37_GPIO,            /* Headphone detect */
+        GPIO98_GPIO,            /* Lid switch */
+        GPIO14_GPIO,            /* WiFi Reset */
+        GPIO15_GPIO,            /* WiFi Power */
+        GPIO24_GPIO,            /* WiFi CS */
+        GPIO36_GPIO,            /* WiFi IRQ */
+        GPIO88_GPIO,            /* LCD CS */
+};
+
+/******************************************************************************
+ * NOR Flash
+ ******************************************************************************/
+#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
+static struct resource z2_flash_resource = {
+        .start  = PXA_CS0_PHYS,
+        .end    = PXA_CS0_PHYS + SZ_8M - 1,
+        .flags  = IORESOURCE_MEM,
+};
+
+static struct mtd_partition z2_flash_parts[] = {
+        {
+                .name   = "U-Boot Bootloader",
+                .offset = 0x0,
+                .size   = 0x20000,
+        },
+        {
+                .name   = "Linux Kernel",
+                .offset = 0x20000,
+                .size   = 0x220000,
+        },
+        {
+                .name   = "Filesystem",
+                .offset = 0x240000,
+                .size   = 0x5b0000,
+        },
+        {
+                .name   = "U-Boot Environment",
+                .offset = 0x7f0000,
+                .size   = MTDPART_SIZ_FULL,
+        },
+};
+
+static struct physmap_flash_data z2_flash_data = {
+        .width          = 2,
+        .parts          = z2_flash_parts,
+        .nr_parts       = ARRAY_SIZE(z2_flash_parts),
+};
+
+static struct platform_device z2_flash = {
+        .name           = "physmap-flash",
+        .id             = -1,
+        .resource       = &z2_flash_resource,
+        .num_resources  = 1,
+        .dev = {
+                .platform_data  = &z2_flash_data,
+        },
+};
+
+static void __init z2_nor_init(void)
+{
+        platform_device_register(&z2_flash);
+}
+#else
+static inline void z2_nor_init(void) {}
+#endif
+
+/******************************************************************************
+ * Backlight
+ ******************************************************************************/
+#if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
+static struct platform_pwm_backlight_data z2_backlight_data[] = {
+        [0] = {
+                /* Keypad Backlight */
+                .pwm_id         = 1,
+                .max_brightness = 1023,
+                .dft_brightness = 512,
+                .pwm_period_ns  = 1260320,
+        },
+        [1] = {
+                /* LCD Backlight */
+                .pwm_id         = 2,
+                .max_brightness = 1023,
+                .dft_brightness = 512,
+                .pwm_period_ns  = 1260320,
+        },
+};
+
+static struct platform_device z2_backlight_devices[2] = {
+        {
+                .name   = "pwm-backlight",
+                .id     = 0,
+                .dev    = {
+                        .platform_data  = &z2_backlight_data[1],
+                },
+        },
+        {
+                .name   = "pwm-backlight",
+                .id     = 1,
+                .dev    = {
+                        .platform_data  = &z2_backlight_data[0],
+                },
+        },
+};
+static void __init z2_pwm_init(void)
+{
+        platform_device_register(&z2_backlight_devices[0]);
+        platform_device_register(&z2_backlight_devices[1]);
+}
+#else
+static inline void z2_pwm_init(void) {}
+#endif
+
+/******************************************************************************
+ * Framebuffer
+ ******************************************************************************/
+#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
+static struct pxafb_mode_info z2_lcd_modes[] = {
+{
+        .pixclock       = 192000,
+        .xres           = 240,
+        .yres           = 320,
+        .bpp            = 16,
+
+        .left_margin    = 4,
+        .right_margin   = 8,
+        .upper_margin   = 4,
+        .lower_margin   = 8,
+
+        .hsync_len      = 4,
+        .vsync_len      = 4,
+},
+};
+
+static struct pxafb_mach_info z2_lcd_screen = {
+        .modes          = z2_lcd_modes,
+        .num_modes      = ARRAY_SIZE(z2_lcd_modes),
+        .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_BIAS_ACTIVE_LOW |
+                          LCD_ALTERNATE_MAPPING,
+};
+
+static void __init z2_lcd_init(void)
+{
+        set_pxa_fb_info(&z2_lcd_screen);
+}
+#else
+static inline void z2_lcd_init(void) {}
+#endif
+
+/******************************************************************************
+ * SD/MMC card controller
+ ******************************************************************************/
+#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
+static struct pxamci_platform_data z2_mci_platform_data = {
+        .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
+        .gpio_card_detect       = GPIO96_ZIPITZ2_SD_DETECT,
+        .gpio_power             = -1,
+        .gpio_card_ro           = -1,
+        .detect_delay           = 20,
+};
+
+static void __init z2_mmc_init(void)
+{
+        pxa_set_mci_info(&z2_mci_platform_data);
+}
+#else
+static inline void z2_mmc_init(void) {}
+#endif
+
+/******************************************************************************
+ * LEDs
+ ******************************************************************************/
+#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
+struct gpio_led z2_gpio_leds[] = {
+{
+        .name                   = "z2:green:wifi",
+        .default_trigger        = "none",
+        .gpio                   = GPIO10_ZIPITZ2_LED_WIFI,
+        .active_low             = 1,
+}, {
+        .name                   = "z2:green:charged",
+        .default_trigger        = "none",
+        .gpio                   = GPIO85_ZIPITZ2_LED_CHARGED,
+        .active_low             = 1,
+}, {
+        .name                   = "z2:amber:charging",
+        .default_trigger        = "none",
+        .gpio                   = GPIO83_ZIPITZ2_LED_CHARGING,
+        .active_low             = 1,
+},
+};
+
+static struct gpio_led_platform_data z2_gpio_led_info = {
+        .leds           = z2_gpio_leds,
+        .num_leds       = ARRAY_SIZE(z2_gpio_leds),
+};
+
+static struct platform_device z2_leds = {
+        .name   = "leds-gpio",
+        .id     = -1,
+        .dev    = {
+                .platform_data  = &z2_gpio_led_info,
+        }
+};
+
+static void __init z2_leds_init(void)
+{
+        platform_device_register(&z2_leds);
+}
+#else
+static inline void z2_leds_init(void) {}
+#endif
+
+/******************************************************************************
+ * GPIO keyboard
+ ******************************************************************************/
+#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
+static unsigned int z2_matrix_keys[] = {
+        KEY(0, 0, KEY_OPTION),
+        KEY(1, 0, KEY_UP),
+        KEY(2, 0, KEY_DOWN),
+        KEY(3, 0, KEY_LEFT),
+        KEY(4, 0, KEY_RIGHT),
+        KEY(5, 0, KEY_END),
+        KEY(6, 0, KEY_KPPLUS),
+
+        KEY(0, 1, KEY_HOME),
+        KEY(1, 1, KEY_Q),
+        KEY(2, 1, KEY_I),
+        KEY(3, 1, KEY_G),
+        KEY(4, 1, KEY_X),
+        KEY(5, 1, KEY_ENTER),
+        KEY(6, 1, KEY_KPMINUS),
+
+        KEY(0, 2, KEY_PAGEUP),
+        KEY(1, 2, KEY_W),
+        KEY(2, 2, KEY_O),
+        KEY(3, 2, KEY_H),
+        KEY(4, 2, KEY_C),
+        KEY(5, 2, KEY_LEFTALT),
+
+        KEY(0, 3, KEY_PAGEDOWN),
+        KEY(1, 3, KEY_E),
+        KEY(2, 3, KEY_P),
+        KEY(3, 3, KEY_J),
+        KEY(4, 3, KEY_V),
+        KEY(5, 3, KEY_LEFTSHIFT),
+
+        KEY(0, 4, KEY_ESC),
+        KEY(1, 4, KEY_R),
+        KEY(2, 4, KEY_A),
+        KEY(3, 4, KEY_K),
+        KEY(4, 4, KEY_B),
+        KEY(5, 4, KEY_LEFTCTRL),
+
+        KEY(0, 5, KEY_TAB),
+        KEY(1, 5, KEY_T),
+        KEY(2, 5, KEY_S),
+        KEY(3, 5, KEY_L),
+        KEY(4, 5, KEY_N),
+        KEY(5, 5, KEY_SPACE),
+
+        KEY(0, 6, KEY_STOPCD),
+        KEY(1, 6, KEY_Y),
+        KEY(2, 6, KEY_D),
+        KEY(3, 6, KEY_BACKSPACE),
+        KEY(4, 6, KEY_M),
+        KEY(5, 6, KEY_COMMA),
+
+        KEY(0, 7, KEY_PLAYCD),
+        KEY(1, 7, KEY_U),
+        KEY(2, 7, KEY_F),
+        KEY(3, 7, KEY_Z),
+        KEY(4, 7, KEY_SEMICOLON),
+        KEY(5, 7, KEY_DOT),
+};
+
+static struct pxa27x_keypad_platform_data z2_keypad_platform_data = {
+        .matrix_key_rows        = 7,
+        .matrix_key_cols        = 8,
+        .matrix_key_map         = z2_matrix_keys,
+        .matrix_key_map_size    = ARRAY_SIZE(z2_matrix_keys),
+
+        .debounce_interval      = 30,
+};
+
+static void __init z2_mkp_init(void)
+{
+        pxa_set_keypad_info(&z2_keypad_platform_data);
+}
+#else
+static inline void z2_mkp_init(void) {}
+#endif
+
+/******************************************************************************
+ * GPIO keys
+ ******************************************************************************/
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+static struct gpio_keys_button z2_pxa_buttons[] = {
+        {KEY_POWER, GPIO1_ZIPITZ2_POWER_BUTTON, 0, "Power Button" },
+        {KEY_CLOSE, GPIO98_ZIPITZ2_LID_BUTTON, 0, "Lid Button" },
+};
+
+static struct gpio_keys_platform_data z2_pxa_keys_data = {
+        .buttons        = z2_pxa_buttons,
+        .nbuttons       = ARRAY_SIZE(z2_pxa_buttons),
+};
+
+static struct platform_device z2_pxa_keys = {
+        .name   = "gpio-keys",
+        .id     = -1,
+        .dev    = {
+                .platform_data = &z2_pxa_keys_data,
+        },
+};
+
+static void __init z2_keys_init(void)
+{
+        platform_device_register(&z2_pxa_keys);
+}
+#else
+static inline void z2_keys_init(void) {}
+#endif
+
+/******************************************************************************
+ * SSP Devices - WiFi and LCD control
+ ******************************************************************************/
+#if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
+/* WiFi */
+static int z2_lbs_spi_setup(struct spi_device *spi)
+{
+        int ret = 0;
+
+        ret = gpio_request(GPIO15_ZIPITZ2_WIFI_POWER, "WiFi Power");
+        if (ret)
+                goto err;
+
+        ret = gpio_direction_output(GPIO15_ZIPITZ2_WIFI_POWER, 1);
+        if (ret)
+                goto err2;
+
+        ret = gpio_request(GPIO14_ZIPITZ2_WIFI_RESET, "WiFi Reset");
+        if (ret)
+                goto err2;
+
+        ret = gpio_direction_output(GPIO14_ZIPITZ2_WIFI_RESET, 0);
+        if (ret)
+                goto err3;
+
+        /* Reset the card */
+        mdelay(180);
+        gpio_set_value(GPIO14_ZIPITZ2_WIFI_RESET, 1);
+        mdelay(20);
+
+        spi->bits_per_word = 16;
+        spi->mode = SPI_MODE_2,
+
+        spi_setup(spi);
+
+        return 0;
+
+err3:
+        gpio_free(GPIO14_ZIPITZ2_WIFI_RESET);
+err2:
+        gpio_free(GPIO15_ZIPITZ2_WIFI_POWER);
+err:
+        return ret;
+};
+
+static int z2_lbs_spi_teardown(struct spi_device *spi)
+{
+        gpio_set_value(GPIO14_ZIPITZ2_WIFI_RESET, 0);
+        gpio_set_value(GPIO15_ZIPITZ2_WIFI_POWER, 0);
+        gpio_free(GPIO14_ZIPITZ2_WIFI_RESET);
+        gpio_free(GPIO15_ZIPITZ2_WIFI_POWER);
+        return 0;
+
+};
+
+static struct pxa2xx_spi_chip z2_lbs_chip_info = {
+        .rx_threshold   = 8,
+        .tx_threshold   = 8,
+        .timeout        = 1000,
+        .gpio_cs        = GPIO24_ZIPITZ2_WIFI_CS,
+};
+
+static struct libertas_spi_platform_data z2_lbs_pdata = {
+        .use_dummy_writes       = 1,
+        .setup                  = z2_lbs_spi_setup,
+        .teardown               = z2_lbs_spi_teardown,
+};
+
+/* LCD */
+static struct pxa2xx_spi_chip lms283_chip_info = {
+        .rx_threshold   = 1,
+        .tx_threshold   = 1,
+        .timeout        = 64,
+        .gpio_cs        = GPIO88_ZIPITZ2_LCD_CS,
+};
+
+static const struct lms283gf05_pdata lms283_pdata = {
+        .reset_gpio     = GPIO19_ZIPITZ2_LCD_RESET,
+};
+
+static struct spi_board_info spi_board_info[] __initdata = {
+{
+        .modalias               = "libertas_spi",
+        .platform_data          = &z2_lbs_pdata,
+        .controller_data        = &z2_lbs_chip_info,
+        .irq                    = gpio_to_irq(GPIO36_ZIPITZ2_WIFI_IRQ),
+        .max_speed_hz           = 13000000,
+        .bus_num                = 1,
+        .chip_select            = 0,
+},
+{
+        .modalias               = "lms283gf05",
+        .controller_data        = &lms283_chip_info,
+        .platform_data          = &lms283_pdata,
+        .max_speed_hz           = 400000,
+        .bus_num                = 2,
+        .chip_select            = 0,
+},
+};
+
+static struct pxa2xx_spi_master pxa_ssp1_master_info = {
+        .clock_enable   = CKEN_SSP,
+        .num_chipselect = 1,
+        .enable_dma     = 1,
+};
+
+static struct pxa2xx_spi_master pxa_ssp2_master_info = {
+        .clock_enable   = CKEN_SSP2,
+        .num_chipselect = 1,
+};
+
+static void __init z2_spi_init(void)
+{
+        pxa2xx_set_spi_info(1, &pxa_ssp1_master_info);
+        pxa2xx_set_spi_info(2, &pxa_ssp2_master_info);
+        spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
+}
+#else
+static inline void z2_spi_init(void) {}
+#endif
+
+/******************************************************************************
+ * Machine init
+ ******************************************************************************/
+static void __init z2_init(void)
+{
+        pxa2xx_mfp_config(ARRAY_AND_SIZE(z2_pin_config));
+
+        z2_lcd_init();
+        z2_mmc_init();
+        z2_mkp_init();
+
+        pxa_set_i2c_info(NULL);
+
+        z2_spi_init();
+        z2_nor_init();
+        z2_pwm_init();
+        z2_leds_init();
+        z2_keys_init();
+}
+
+MACHINE_START(ZIPIT2, "Zipit Z2")
+        .phys_io        = 0x40000000,
+        .boot_params    = 0xa0000100,
+        .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
+        .map_io         = pxa_map_io,
+        .init_irq       = pxa27x_init_irq,
+        .timer          = &pxa_timer,
+        .init_machine   = z2_init,
+MACHINE_END