/*
* linux/arch/arm/mach-pxa/balloon3.c
*
* Support for Balloonboard.org Balloon3 board.
*
* Author: Nick Bane, Wookey, Jonathan McDowell
* Created: June, 2006
* Copyright: Toby Churchill Ltd
* Derived from mainstone.c, by Nico Pitre
*
* 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/gpio.h>
#include <linux/ioport.h>
#include <linux/ucb1400.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/types.h>
#include <linux/i2c/pcf857x.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/physmap.h>
#include <linux/regulator/max1586.h>
#include <asm/setup.h>
#include <asm/mach-types.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/balloon3.h>
#include <mach/audio.h>
#include <mach/pxafb.h>
#include <mach/mmc.h>
#include <mach/udc.h>
#include <mach/pxa27x-udc.h>
#include <mach/irda.h>
#include <mach/ohci.h>
#include <plat/i2c.h>
#include "generic.h"
#include "devices.h"
/******************************************************************************
* Pin configuration
******************************************************************************/
static unsigned long balloon3_pin_config[] __initdata = {
/* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
GPIO42_BTUART_RXD,
GPIO43_BTUART_TXD,
GPIO44_BTUART_CTS,
GPIO45_BTUART_RTS,
/* Reset, configured as GPIO wakeup source */
GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
/* LEDs */
GPIO9_GPIO, /* NAND activity LED */
GPIO10_GPIO, /* Heartbeat LED */
/* AC97 */
GPIO28_AC97_BITCLK,
GPIO29_AC97_SDATA_IN_0,
GPIO30_AC97_SDATA_OUT,
GPIO31_AC97_SYNC,
GPIO113_AC97_nRESET,
GPIO95_GPIO,
/* MMC */
GPIO32_MMC_CLK,
GPIO92_MMC_DAT_0,
GPIO109_MMC_DAT_1,
GPIO110_MMC_DAT_2,
GPIO111_MMC_DAT_3,
GPIO112_MMC_CMD,
/* USB Host */
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,
};
/******************************************************************************
* Compatibility: Parameter parsing
******************************************************************************/
static unsigned long balloon3_irq_enabled;
static unsigned long balloon3_features_present =
(1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
(1 << BALLOON3_FEATURE_AUDIO) |
(1 << BALLOON3_FEATURE_TOPPOLY);
int balloon3_has(enum balloon3_features feature)
{
return (balloon3_features_present & (1 << feature)) ? 1 : 0;
}
EXPORT_SYMBOL_GPL(balloon3_has);
int __init parse_balloon3_features(char *arg)
{
if (!arg)
return 0;
return strict_strtoul(arg, 0, &balloon3_features_present);
}
early_param("balloon3_features", parse_balloon3_features);
/******************************************************************************
* NOR Flash
******************************************************************************/
#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
static struct mtd_partition balloon3_nor_partitions[] = {
{
.name = "Flash",
.offset = 0x00000000,
.size = MTDPART_SIZ_FULL,
}
};
static struct physmap_flash_data balloon3_flash_data[] = {
{
.width = 2, /* bankwidth in bytes */
.parts = balloon3_nor_partitions,
.nr_parts = ARRAY_SIZE(balloon3_nor_partitions)
}
};
static struct resource balloon3_flash_resource = {
.start = PXA_CS0_PHYS,
.end = PXA_CS0_PHYS + SZ_64M - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device balloon3_flash = {
.name = "physmap-flash",
.id = 0,
.resource = &balloon3_flash_resource,
.num_resources = 1,
.dev = {
.platform_data = balloon3_flash_data,
},
};
static void __init balloon3_nor_init(void)
{
platform_device_register(&balloon3_flash);
}
#else
static inline void balloon3_nor_init(void) {}
#endif
/******************************************************************************
* Audio and Touchscreen
******************************************************************************/
#if defined(CONFIG_TOUCHSCREEN_UCB1400) || \
defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
static struct ucb1400_pdata vpac270_ucb1400_pdata = {
.irq = IRQ_GPIO(BALLOON3_GPIO_CODEC_IRQ),
};
static struct platform_device balloon3_ucb1400_device = {
.name = "ucb1400_core",
.id = -1,
.dev = {
.platform_data = &vpac270_ucb1400_pdata,
},
};
static void __init balloon3_ts_init(void)
{
if (!balloon3_has(BALLOON3_FEATURE_AUDIO))
return;
pxa_set_ac97_info(NULL);
platform_device_register(&balloon3_ucb1400_device);
}
#else
static inline void balloon3_ts_init(void) {}
#endif
/******************************************************************************
* Framebuffer
******************************************************************************/
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static struct pxafb_mode_info balloon3_lcd_modes[] = {
{
.pixclock = 38000,
.xres = 480,
.yres = 640,
.bpp = 16,
.hsync_len = 8,
.left_margin = 8,
.right_margin = 8,
.vsync_len = 2,
.upper_margin = 4,
.lower_margin = 5,
.sync = 0,
},
};
static struct pxafb_mach_info balloon3_lcd_screen = {
.modes = balloon3_lcd_modes,
.num_modes = ARRAY_SIZE(balloon3_lcd_modes),
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};
static void balloon3_backlight_power(int on)
{
gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
}
static void __init balloon3_lcd_init(void)
{
int ret;
if (!balloon3_has(BALLOON3_FEATURE_TOPPOLY))
return;
ret = gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, "BKL-ON");
if (ret) {
pr_err("Requesting BKL-ON GPIO failed!\n");
goto err;
}
ret = gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
if (ret) {
pr_err("Setting BKL-ON GPIO direction failed!\n");
goto err2;
}
balloon3_lcd_screen.pxafb_backlight_power = balloon3_backlight_power;
set_pxa_fb_info(&balloon3_lcd_screen);
return;
err2:
gpio_free(BALLOON3_GPIO_RUN_BACKLIGHT);
err:
return;
}
#else
static inline void balloon3_lcd_init(void) {}
#endif
/******************************************************************************
* SD/MMC card controller
******************************************************************************/
#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
static struct pxamci_platform_data balloon3_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
.gpio_card_detect = -1,
.gpio_card_ro = -1,
.gpio_power = -1,
.detect_delay_ms = 200,
};
static void __init balloon3_mmc_init(void)
{
pxa_set_mci_info(&balloon3_mci_platform_data);
}
#else
static inline void balloon3_mmc_init(void) {}
#endif
/******************************************************************************
* USB Gadget
******************************************************************************/
#if defined(CONFIG_USB_GADGET_PXA27X)||defined(CONFIG_USB_GADGET_PXA27X_MODULE)
static void balloon3_udc_command(int cmd)
{
if (cmd == PXA2XX_UDC_CMD_CONNECT)
UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
UP2OCR &= ~UP2OCR_DPPUE;
}
static int balloon3_udc_is_connected(void)
{
return 1;
}
static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
.udc_command = balloon3_udc_command,
.udc_is_connected = balloon3_udc_is_connected,
.gpio_pullup = -1,
};
static void __init balloon3_udc_init(void)
{
pxa_set_udc_info(&balloon3_udc_info);
platform_device_register(&balloon3_gpio_vbus);
}
#else
static inline void balloon3_udc_init(void) {}
#endif
/******************************************************************************
* IrDA
******************************************************************************/
#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
static struct pxaficp_platform_data balloon3_ficp_platform_data = {
.transceiver_cap = IR_FIRMODE | IR_SIRMODE | IR_OFF,
};
static void __init balloon3_irda_init(void)
{
pxa_set_ficp_info(&balloon3_ficp_platform_data);
}
#else
static inline void balloon3_irda_init(void) {}
#endif
/******************************************************************************
* USB Host
******************************************************************************/
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static struct pxaohci_platform_data balloon3_ohci_info = {
.port_mode = PMM_PERPORT_MODE,
.flags = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
};
static void __init balloon3_uhc_init(void)
{
if (!balloon3_has(BALLOON3_FEATURE_OHCI))
return;
pxa_set_ohci_info(&balloon3_ohci_info);
}
#else
static inline void balloon3_uhc_init(void) {}
#endif
/******************************************************************************
* LEDs
******************************************************************************/
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
struct gpio_led balloon3_gpio_leds[] = {
{
.name = "balloon3:green:idle",
.default_trigger = "heartbeat",
.gpio = BALLOON3_GPIO_LED_IDLE,
.active_low = 1,
}, {
.name = "balloon3:green:nand",
.default_trigger = "nand-disk",
.gpio = BALLOON3_GPIO_LED_NAND,
.active_low = 1,
},
};
static struct gpio_led_platform_data balloon3_gpio_led_info = {
.leds = balloon3_gpio_leds,
.num_leds = ARRAY_SIZE(balloon3_gpio_leds),
};
static struct platform_device balloon3_leds = {
.name = "leds-gpio",
.id = 0,
.dev = {
.platform_data = &balloon3_gpio_led_info,
}
};
struct gpio_led balloon3_pcf_gpio_leds[] = {
{
.name = "balloon3:green:led0",
.gpio = BALLOON3_PCF_GPIO_LED0,
.active_low = 1,
}, {
.name = "balloon3:green:led1",
.gpio = BALLOON3_PCF_GPIO_LED1,
.active_low = 1,
}, {
.name = "balloon3:orange:led2",
.gpio = BALLOON3_PCF_GPIO_LED2,
.active_low = 1,
}, {
.name = "balloon3:orange:led3",
.gpio = BALLOON3_PCF_GPIO_LED3,
.active_low = 1,
}, {
.name = "balloon3:orange:led4",
.gpio = BALLOON3_PCF_GPIO_LED4,
.active_low = 1,
}, {
.name = "balloon3:orange:led5",
.gpio = BALLOON3_PCF_GPIO_LED5,
.active_low = 1,
}, {
.name = "balloon3:red:led6",
.gpio = BALLOON3_PCF_GPIO_LED6,
.active_low = 1,
}, {
.name = "balloon3:red:led7",
.gpio = BALLOON3_PCF_GPIO_LED7,
.active_low = 1,
},
};
static struct gpio_led_platform_data balloon3_pcf_gpio_led_info = {
.leds = balloon3_pcf_gpio_leds,
.num_leds = ARRAY_SIZE(balloon3_pcf_gpio_leds),
};
static struct platform_device balloon3_pcf_leds = {
.name = "leds-gpio",
.id = 1,
.dev = {
.platform_data = &balloon3_pcf_gpio_led_info,
}
};
static void __init balloon3_leds_init(void)
{
platform_device_register(&balloon3_leds);
platform_device_register(&balloon3_pcf_leds);
}
#else
static inline void balloon3_leds_init(void) {}
#endif
/******************************************************************************
* FPGA IRQ
******************************************************************************/
static void balloon3_mask_irq(unsigned int irq)
{
int balloon3_irq = (irq - BALLOON3_IRQ(0));
balloon3_irq_enabled &= ~(1 << balloon3_irq);
__raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
}
static void balloon3_unmask_irq(unsigned int irq)
{
int balloon3_irq = (irq - BALLOON3_IRQ(0));
balloon3_irq_enabled |= (1 << balloon3_irq);
__raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
}
static struct irq_chip balloon3_irq_chip = {
.name = "FPGA",
.ack = balloon3_mask_irq,
.mask = balloon3_mask_irq,
.unmask = balloon3_unmask_irq,
};
static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
{
unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
balloon3_irq_enabled;
do {
/* clear useless edge notification */
if (desc->chip->ack)
desc->chip->ack(BALLOON3_AUX_NIRQ);
while (pending) {
irq = BALLOON3_IRQ(0) + __ffs(pending);
generic_handle_irq(irq);
pending &= pending - 1;
}
pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
balloon3_irq_enabled;
} while (pending);
}
static void __init balloon3_init_irq(void)
{
int irq;
pxa27x_init_irq();
/* setup extra Balloon3 irqs */
for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
set_irq_chip(irq, &balloon3_irq_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
set_irq_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
pr_debug("%s: chained handler installed - irq %d automatically "
"enabled\n", __func__, BALLOON3_AUX_NIRQ);
}
/******************************************************************************
* GPIO expander
******************************************************************************/
#if defined(CONFIG_GPIO_PCF857X) || defined(CONFIG_GPIO_PCF857X_MODULE)
static struct pcf857x_platform_data balloon3_pcf857x_pdata = {
.gpio_base = BALLOON3_PCF_GPIO_BASE,
.n_latch = 0,
.setup = NULL,
.teardown = NULL,
.context = NULL,
};
static struct i2c_board_info __initdata balloon3_i2c_devs[] = {
{
I2C_BOARD_INFO("pcf8574a", 0x38),
.platform_data = &balloon3_pcf857x_pdata,
},
};
static void __init balloon3_i2c_init(void)
{
pxa_set_i2c_info(NULL);
i2c_register_board_info(0, ARRAY_AND_SIZE(balloon3_i2c_devs));
}
#else
static inline void balloon3_i2c_init(void) {}
#endif
/******************************************************************************
* NAND
******************************************************************************/
#if defined(CONFIG_MTD_NAND_PLATFORM)||defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
static uint16_t balloon3_ctl =
BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
BALLOON3_NAND_CONTROL_FLWP;
static void balloon3_nand_cmd_ctl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
struct nand_chip *this = mtd->priv;
if (ctrl & NAND_CTRL_CHANGE) {
if (ctrl & NAND_CLE)
balloon3_ctl |= BALLOON3_NAND_CONTROL_FLCLE;
else
balloon3_ctl &= ~BALLOON3_NAND_CONTROL_FLCLE;
if (ctrl & NAND_ALE)
balloon3_ctl |= BALLOON3_NAND_CONTROL_FLALE;
else
balloon3_ctl &= ~BALLOON3_NAND_CONTROL_FLALE;
__raw_writel(balloon3_ctl, BALLOON3_NAND_CONTROL_REG);
}
if (cmd != NAND_CMD_NONE)
writeb(cmd, this->IO_ADDR_W);
}
static void balloon3_nand_select_chip(struct mtd_info *mtd, int chip)
{
if (chip < 0 || chip > 3)
return;
balloon3_ctl |= BALLOON3_NAND_CONTROL_FLCE0 |
BALLOON3_NAND_CONTROL_FLCE1 |
BALLOON3_NAND_CONTROL_FLCE2 |
BALLOON3_NAND_CONTROL_FLCE3;
/* Deassert correct nCE line */
balloon3_ctl &= ~(BALLOON3_NAND_CONTROL_FLCE0 << chip);
__raw_writew(balloon3_ctl, BALLOON3_NAND_CONTROL_REG);
}
static int balloon3_nand_probe(struct platform_device *pdev)
{
void __iomem *temp_map;
uint16_t ver;
int ret;
__raw_writew(BALLOON3_NAND_CONTROL2_16BIT, BALLOON3_NAND_CONTROL2_REG);
ver = __raw_readw(BALLOON3_FPGA_VER);
if (ver > 0x0201)
pr_warn("The FPGA code, version 0x%04x, is newer than rel-0.3. "
"NAND support might be broken in this version!", ver);
/* Power up the NAND chips */
ret = gpio_request(BALLOON3_GPIO_RUN_NAND, "NAND");
if (ret)
goto err1;
ret = gpio_direction_output(BALLOON3_GPIO_RUN_NAND, 1);
if (ret)
goto err2;
gpio_set_value(BALLOON3_GPIO_RUN_NAND, 1);
/* Deassert all nCE lines and write protect line */
__raw_writel(balloon3_ctl, BALLOON3_NAND_CONTROL_REG);
return 0;
err2:
gpio_free(BALLOON3_GPIO_RUN_NAND);
err1:
return ret;
}
static void balloon3_nand_remove(struct platform_device *pdev)
{
/* Power down the NAND chips */
gpio_set_value(BALLOON3_GPIO_RUN_NAND, 0);
gpio_free(BALLOON3_GPIO_RUN_NAND);
}
static struct mtd_partition balloon3_partition_info[] = {
[0] = {
.name = "Boot",
.offset = 0,
.size = SZ_4M,
},
[1] = {
.name = "RootFS",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL
},
};
static const char *balloon3_part_probes[] = { "cmdlinepart", NULL };
struct platform_nand_data balloon3_nand_pdata = {
.chip = {
.nr_chips = 4,
.chip_offset = 0,
.nr_partitions = ARRAY_SIZE(balloon3_partition_info),
.partitions = balloon3_partition_info,
.chip_delay = 50,
.part_probe_types = balloon3_part_probes,
},
.ctrl = {
.hwcontrol = 0,
.dev_ready = 0,
.select_chip = balloon3_nand_select_chip,
.cmd_ctrl = balloon3_nand_cmd_ctl,
.probe = balloon3_nand_probe,
.remove = balloon3_nand_remove,
},
};
static struct resource balloon3_nand_resource[] = {
[0] = {
.start = BALLOON3_NAND_BASE,
.end = BALLOON3_NAND_BASE + 0x4,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device balloon3_nand = {
.name = "gen_nand",
.num_resources = ARRAY_SIZE(balloon3_nand_resource),
.resource = balloon3_nand_resource,
.id = -1,
.dev = {
.platform_data = &balloon3_nand_pdata,
}
};
static void __init balloon3_nand_init(void)
{
platform_device_register(&balloon3_nand);
}
#else
static inline void balloon3_nand_init(void) {}
#endif
/******************************************************************************
* Core power regulator
******************************************************************************/
#if defined(CONFIG_REGULATOR_MAX1586) || \
defined(CONFIG_REGULATOR_MAX1586_MODULE)
static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
{
.supply = "vcc_core",
}
};
static struct regulator_init_data balloon3_max1587a_v3_info = {
.constraints = {
.name = "vcc_core range",
.min_uV = 900000,
.max_uV = 1705000,
.always_on = 1,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
},
.consumer_supplies = balloon3_max1587a_consumers,
.num_consumer_supplies = ARRAY_SIZE(balloon3_max1587a_consumers),
};
static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
{
.name = "vcc_core",
.id = MAX1586_V3,
.platform_data = &balloon3_max1587a_v3_info,
}
};
static struct max1586_platform_data balloon3_max1587a_info = {
.subdevs = balloon3_max1587a_subdevs,
.num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
.v3_gain = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
};
static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
{
I2C_BOARD_INFO("max1586", 0x14),
.platform_data = &balloon3_max1587a_info,
},
};
static void __init balloon3_pmic_init(void)
{
pxa27x_set_i2c_power_info(NULL);
i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
}
#else
static inline void balloon3_pmic_init(void) {}
#endif
/******************************************************************************
* Machine init
******************************************************************************/
static void __init balloon3_init(void)
{
ARB_CNTRL = ARB_CORE_PARK | 0x234;
pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
pxa_set_ffuart_info(NULL);
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
balloon3_i2c_init();
balloon3_irda_init();
balloon3_lcd_init();
balloon3_leds_init();
balloon3_mmc_init();
balloon3_nand_init();
balloon3_nor_init();
balloon3_pmic_init();
balloon3_ts_init();
balloon3_udc_init();
balloon3_uhc_init();
}
static struct map_desc balloon3_io_desc[] __initdata = {
{ /* CPLD/FPGA */
.virtual = BALLOON3_FPGA_VIRT,
.pfn = __phys_to_pfn(BALLOON3_FPGA_PHYS),
.length = BALLOON3_FPGA_LENGTH,
.type = MT_DEVICE,
},
};
static void __init balloon3_map_io(void)
{
pxa_map_io();
iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
}
MACHINE_START(BALLOON3, "Balloon3")
/* Maintainer: Nick Bane. */
.phys_io = 0x40000000,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.map_io = balloon3_map_io,
.init_irq = balloon3_init_irq,
.timer = &pxa_timer,
.init_machine = balloon3_init,
.boot_params = PHYS_OFFSET + 0x100,
MACHINE_END
