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mainstone.c

/*
 *  linux/arch/arm/mach-pxa/mainstone.c
 *
 *  Support for the Intel HCDDBBVA0 Development Platform.
 *  (go figure how they came up with such name...)
 *
 *  Author: Nicolas Pitre
 *  Created:      Nov 05, 2002
 *  Copyright:    MontaVista Software Inc.
 *
 *  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/init.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/pwm_backlight.h>
#include <linux/smc91x.h>

#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/sizes.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/flash.h>

#include <mach/pxa27x.h>
#include <mach/gpio.h>
#include <mach/mainstone.h>
#include <mach/audio.h>
#include <mach/pxafb.h>
#include <plat/i2c.h>
#include <mach/mmc.h>
#include <mach/irda.h>
#include <mach/ohci.h>
#include <plat/pxa27x_keypad.h>
#include <mach/smemc.h>

#include "generic.h"
#include "devices.h"

static unsigned long mainstone_pin_config[] = {
      /* Chip Select */
      GPIO15_nCS_1,

      /* LCD - 16bpp Active TFT */
      GPIOxx_LCD_TFT_16BPP,
      GPIO16_PWM0_OUT,  /* Backlight */

      /* MMC */
      GPIO32_MMC_CLK,
      GPIO112_MMC_CMD,
      GPIO92_MMC_DAT_0,
      GPIO109_MMC_DAT_1,
      GPIO110_MMC_DAT_2,
      GPIO111_MMC_DAT_3,

      /* USB Host Port 1 */
      GPIO88_USBH1_PWR,
      GPIO89_USBH1_PEN,

      /* PC Card */
      GPIO48_nPOE,
      GPIO49_nPWE,
      GPIO50_nPIOR,
      GPIO51_nPIOW,
      GPIO85_nPCE_1,
      GPIO54_nPCE_2,
      GPIO79_PSKTSEL,
      GPIO55_nPREG,
      GPIO56_nPWAIT,
      GPIO57_nIOIS16,

      /* AC97 */
      GPIO28_AC97_BITCLK,
      GPIO29_AC97_SDATA_IN_0,
      GPIO30_AC97_SDATA_OUT,
      GPIO31_AC97_SYNC,
      GPIO45_AC97_SYSCLK,

      /* Keypad */
      GPIO93_KP_DKIN_0,
      GPIO94_KP_DKIN_1,
      GPIO95_KP_DKIN_2,
      GPIO100_KP_MKIN_0 | WAKEUP_ON_LEVEL_HIGH,
      GPIO101_KP_MKIN_1 | WAKEUP_ON_LEVEL_HIGH,
      GPIO102_KP_MKIN_2 | WAKEUP_ON_LEVEL_HIGH,
      GPIO97_KP_MKIN_3  | WAKEUP_ON_LEVEL_HIGH,
      GPIO98_KP_MKIN_4  | WAKEUP_ON_LEVEL_HIGH,
      GPIO99_KP_MKIN_5  | 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,
      GPIO96_KP_MKOUT_6,

      /* I2C */
      GPIO117_I2C_SCL,
      GPIO118_I2C_SDA,

      /* GPIO */
      GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
};

static unsigned long mainstone_irq_enabled;

static void mainstone_mask_irq(struct irq_data *d)
{
      int mainstone_irq = (d->irq - MAINSTONE_IRQ(0));
      MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
}

static void mainstone_unmask_irq(struct irq_data *d)
{
      int mainstone_irq = (d->irq - MAINSTONE_IRQ(0));
      /* the irq can be acknowledged only if deasserted, so it's done here */
      MST_INTSETCLR &= ~(1 << mainstone_irq);
      MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
}

static struct irq_chip mainstone_irq_chip = {
      .name       = "FPGA",
      .irq_ack    = mainstone_mask_irq,
      .irq_mask   = mainstone_mask_irq,
      .irq_unmask = mainstone_unmask_irq,
};

static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
{
      unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
      do {
            /* clear useless edge notification */
            desc->irq_data.chip->irq_ack(&desc->irq_data);
            if (likely(pending)) {
                  irq = MAINSTONE_IRQ(0) + __ffs(pending);
                  generic_handle_irq(irq);
            }
            pending = MST_INTSETCLR & mainstone_irq_enabled;
      } while (pending);
}

static void __init mainstone_init_irq(void)
{
      int irq;

      pxa27x_init_irq();

      /* setup extra Mainstone irqs */
      for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
            set_irq_chip(irq, &mainstone_irq_chip);
            set_irq_handler(irq, handle_level_irq);
            if (irq == MAINSTONE_IRQ(10) || irq == MAINSTONE_IRQ(14))
                  set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_NOAUTOEN);
            else
                  set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
      }
      set_irq_flags(MAINSTONE_IRQ(8), 0);
      set_irq_flags(MAINSTONE_IRQ(12), 0);

      MST_INTMSKENA = 0;
      MST_INTSETCLR = 0;

      set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
      set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
}

#ifdef CONFIG_PM

static int mainstone_irq_resume(struct sys_device *dev)
{
      MST_INTMSKENA = mainstone_irq_enabled;
      return 0;
}

static struct sysdev_class mainstone_irq_sysclass = {
      .name = "cpld_irq",
      .resume = mainstone_irq_resume,
};

static struct sys_device mainstone_irq_device = {
      .cls = &mainstone_irq_sysclass,
};

static int __init mainstone_irq_device_init(void)
{
      int ret = -ENODEV;

      if (machine_is_mainstone()) {
            ret = sysdev_class_register(&mainstone_irq_sysclass);
            if (ret == 0)
                  ret = sysdev_register(&mainstone_irq_device);
      }
      return ret;
}

device_initcall(mainstone_irq_device_init);

#endif


static struct resource smc91x_resources[] = {
      [0] = {
            .start      = (MST_ETH_PHYS + 0x300),
            .end  = (MST_ETH_PHYS + 0xfffff),
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = MAINSTONE_IRQ(3),
            .end  = MAINSTONE_IRQ(3),
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
      }
};

static struct smc91x_platdata mainstone_smc91x_info = {
      .flags      = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
              SMC91X_NOWAIT | SMC91X_USE_DMA,
};

static struct platform_device smc91x_device = {
      .name       = "smc91x",
      .id         = 0,
      .num_resources    = ARRAY_SIZE(smc91x_resources),
      .resource   = smc91x_resources,
      .dev        = {
            .platform_data = &mainstone_smc91x_info,
      },
};

static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
{
      if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
            MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
      return 0;
}

static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
{
      if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
            MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
}

static long mst_audio_suspend_mask;

static void mst_audio_suspend(void *priv)
{
      mst_audio_suspend_mask = MST_MSCWR2;
      MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
}

static void mst_audio_resume(void *priv)
{
      MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
}

static pxa2xx_audio_ops_t mst_audio_ops = {
      .startup    = mst_audio_startup,
      .shutdown   = mst_audio_shutdown,
      .suspend    = mst_audio_suspend,
      .resume           = mst_audio_resume,
};

static struct resource flash_resources[] = {
      [0] = {
            .start      = PXA_CS0_PHYS,
            .end  = PXA_CS0_PHYS + SZ_64M - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = PXA_CS1_PHYS,
            .end  = PXA_CS1_PHYS + SZ_64M - 1,
            .flags      = IORESOURCE_MEM,
      },
};

static struct mtd_partition mainstoneflash0_partitions[] = {
      {
            .name =           "Bootloader",
            .size =           0x00040000,
            .offset =   0,
            .mask_flags =     MTD_WRITEABLE  /* force read-only */
      },{
            .name =           "Kernel",
            .size =           0x00400000,
            .offset =   0x00040000,
      },{
            .name =           "Filesystem",
            .size =           MTDPART_SIZ_FULL,
            .offset =   0x00440000
      }
};

static struct flash_platform_data mst_flash_data[2] = {
      {
            .map_name   = "cfi_probe",
            .parts            = mainstoneflash0_partitions,
            .nr_parts   = ARRAY_SIZE(mainstoneflash0_partitions),
      }, {
            .map_name   = "cfi_probe",
            .parts            = NULL,
            .nr_parts   = 0,
      }
};

static struct platform_device mst_flash_device[2] = {
      {
            .name       = "pxa2xx-flash",
            .id         = 0,
            .dev = {
                  .platform_data = &mst_flash_data[0],
            },
            .resource = &flash_resources[0],
            .num_resources = 1,
      },
      {
            .name       = "pxa2xx-flash",
            .id         = 1,
            .dev = {
                  .platform_data = &mst_flash_data[1],
            },
            .resource = &flash_resources[1],
            .num_resources = 1,
      },
};

#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static struct platform_pwm_backlight_data mainstone_backlight_data = {
      .pwm_id           = 0,
      .max_brightness   = 1023,
      .dft_brightness   = 1023,
      .pwm_period_ns    = 78770,
};

static struct platform_device mainstone_backlight_device = {
      .name       = "pwm-backlight",
      .dev        = {
            .parent = &pxa27x_device_pwm0.dev,
            .platform_data = &mainstone_backlight_data,
      },
};

static void __init mainstone_backlight_register(void)
{
      int ret = platform_device_register(&mainstone_backlight_device);
      if (ret)
            printk(KERN_ERR "mainstone: failed to register backlight device: %d\n", ret);
}
#else
#define mainstone_backlight_register()    do { } while (0)
#endif

static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
      .pixclock         = 50000,
      .xres             = 640,
      .yres             = 480,
      .bpp              = 16,
      .hsync_len        = 1,
      .left_margin            = 0x9f,
      .right_margin           = 1,
      .vsync_len        = 44,
      .upper_margin           = 0,
      .lower_margin           = 0,
      .sync             = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
      .pixclock         = 110000,
      .xres             = 240,
      .yres             = 320,
      .bpp              = 16,
      .hsync_len        = 4,
      .left_margin            = 8,
      .right_margin           = 20,
      .vsync_len        = 3,
      .upper_margin           = 1,
      .lower_margin           = 10,
      .sync             = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info mainstone_pxafb_info = {
      .num_modes        = 1,
      .lcd_conn         = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};

static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
{
      int err;

      /* make sure SD/Memory Stick multiplexer's signals
       * are routed to MMC controller
       */
      MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;

      err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, IRQF_DISABLED,
                       "MMC card detect", data);
      if (err)
            printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");

      return err;
}

static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
{
      struct pxamci_platform_data* p_d = dev->platform_data;

      if (( 1 << vdd) & p_d->ocr_mask) {
            printk(KERN_DEBUG "%s: on\n", __func__);
            MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
            MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
      } else {
            printk(KERN_DEBUG "%s: off\n", __func__);
            MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
      }
}

static void mainstone_mci_exit(struct device *dev, void *data)
{
      free_irq(MAINSTONE_MMC_IRQ, data);
}

static struct pxamci_platform_data mainstone_mci_platform_data = {
      .ocr_mask         = MMC_VDD_32_33|MMC_VDD_33_34,
      .init                   = mainstone_mci_init,
      .setpower         = mainstone_mci_setpower,
      .exit             = mainstone_mci_exit,
      .gpio_card_detect = -1,
      .gpio_card_ro           = -1,
      .gpio_power       = -1,
};

static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
{
      unsigned long flags;

      local_irq_save(flags);
      if (mode & IR_SIRMODE) {
            MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
      } else if (mode & IR_FIRMODE) {
            MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
      }
      pxa2xx_transceiver_mode(dev, mode);
      if (mode & IR_OFF) {
            MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
      } else {
            MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
      }
      local_irq_restore(flags);
}

static struct pxaficp_platform_data mainstone_ficp_platform_data = {
      .gpio_pwdown            = -1,
      .transceiver_cap  = IR_SIRMODE | IR_FIRMODE | IR_OFF,
      .transceiver_mode = mainstone_irda_transceiver_mode,
};

static struct gpio_keys_button gpio_keys_button[] = {
      [0] = {
            .desc = "wakeup",
            .code = KEY_SUSPEND,
            .type = EV_KEY,
            .gpio = 1,
            .wakeup     = 1,
      },
};

static struct gpio_keys_platform_data mainstone_gpio_keys = {
      .buttons    = gpio_keys_button,
      .nbuttons   = 1,
};

static struct platform_device mst_gpio_keys_device = {
      .name       = "gpio-keys",
      .id         = -1,
      .dev        = {
            .platform_data    = &mainstone_gpio_keys,
      },
};

static struct platform_device *platform_devices[] __initdata = {
      &smc91x_device,
      &mst_flash_device[0],
      &mst_flash_device[1],
      &mst_gpio_keys_device,
};

static struct pxaohci_platform_data mainstone_ohci_platform_data = {
      .port_mode  = PMM_PERPORT_MODE,
      .flags            = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
};

#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
static unsigned int mainstone_matrix_keys[] = {
      KEY(0, 0, KEY_A), KEY(1, 0, KEY_B), KEY(2, 0, KEY_C),
      KEY(3, 0, KEY_D), KEY(4, 0, KEY_E), KEY(5, 0, KEY_F),
      KEY(0, 1, KEY_G), KEY(1, 1, KEY_H), KEY(2, 1, KEY_I),
      KEY(3, 1, KEY_J), KEY(4, 1, KEY_K), KEY(5, 1, KEY_L),
      KEY(0, 2, KEY_M), KEY(1, 2, KEY_N), KEY(2, 2, KEY_O),
      KEY(3, 2, KEY_P), KEY(4, 2, KEY_Q), KEY(5, 2, KEY_R),
      KEY(0, 3, KEY_S), KEY(1, 3, KEY_T), KEY(2, 3, KEY_U),
      KEY(3, 3, KEY_V), KEY(4, 3, KEY_W), KEY(5, 3, KEY_X),
      KEY(2, 4, KEY_Y), KEY(3, 4, KEY_Z),

      KEY(0, 4, KEY_DOT),     /* . */
      KEY(1, 4, KEY_CLOSE),   /* @ */
      KEY(4, 4, KEY_SLASH),
      KEY(5, 4, KEY_BACKSLASH),
      KEY(0, 5, KEY_HOME),
      KEY(1, 5, KEY_LEFTSHIFT),
      KEY(2, 5, KEY_SPACE),
      KEY(3, 5, KEY_SPACE),
      KEY(4, 5, KEY_ENTER),
      KEY(5, 5, KEY_BACKSPACE),

      KEY(0, 6, KEY_UP),
      KEY(1, 6, KEY_DOWN),
      KEY(2, 6, KEY_LEFT),
      KEY(3, 6, KEY_RIGHT),
      KEY(4, 6, KEY_SELECT),
};

struct pxa27x_keypad_platform_data mainstone_keypad_info = {
      .matrix_key_rows  = 6,
      .matrix_key_cols  = 7,
      .matrix_key_map         = mainstone_matrix_keys,
      .matrix_key_map_size    = ARRAY_SIZE(mainstone_matrix_keys),

      .enable_rotary0         = 1,
      .rotary0_up_key         = KEY_UP,
      .rotary0_down_key = KEY_DOWN,

      .debounce_interval      = 30,
};

static void __init mainstone_init_keypad(void)
{
      pxa_set_keypad_info(&mainstone_keypad_info);
}
#else
static inline void mainstone_init_keypad(void) {}
#endif

static void __init mainstone_init(void)
{
      int SW7 = 0;  /* FIXME: get from SCR (Mst doc section 3.2.1.1) */

      pxa2xx_mfp_config(ARRAY_AND_SIZE(mainstone_pin_config));

      pxa_set_ffuart_info(NULL);
      pxa_set_btuart_info(NULL);
      pxa_set_stuart_info(NULL);

      mst_flash_data[0].width = (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
      mst_flash_data[1].width = 4;

      /* Compensate for SW7 which swaps the flash banks */
      mst_flash_data[SW7].name = "processor-flash";
      mst_flash_data[SW7 ^ 1].name = "mainboard-flash";

      printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
             mst_flash_data[0].name);

      /* system bus arbiter setting
       * - Core_Park
       * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
       */
      ARB_CNTRL = ARB_CORE_PARK | 0x234;

      platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));

      /* reading Mainstone's "Virtual Configuration Register"
         might be handy to select LCD type here */
      if (0)
            mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
      else
            mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;

      set_pxa_fb_info(&mainstone_pxafb_info);
      mainstone_backlight_register();

      pxa_set_mci_info(&mainstone_mci_platform_data);
      pxa_set_ficp_info(&mainstone_ficp_platform_data);
      pxa_set_ohci_info(&mainstone_ohci_platform_data);
      pxa_set_i2c_info(NULL);
      pxa_set_ac97_info(&mst_audio_ops);

      mainstone_init_keypad();
}


static struct map_desc mainstone_io_desc[] __initdata = {
      {     /* CPLD */
            .virtual    =  MST_FPGA_VIRT,
            .pfn        = __phys_to_pfn(MST_FPGA_PHYS),
            .length           = 0x00100000,
            .type       = MT_DEVICE
      }
};

static void __init mainstone_map_io(void)
{
      pxa27x_map_io();
      iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));

      /*    for use I SRAM as framebuffer.      */
      PSLR |= 0xF04;
      PCFR = 0x66;
}

MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
      /* Maintainer: MontaVista Software Inc. */
      .boot_params      = 0xa0000100,     /* BLOB boot parameter setting */
      .map_io           = mainstone_map_io,
      .nr_irqs    = MAINSTONE_NR_IRQS,
      .init_irq   = mainstone_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = mainstone_init,
MACHINE_END

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