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linux-next/arch/arm/mach-pxa/balloon3.c
Jonathan McDowell 2a23ec3679 [ARM] pxa: balloon3 (http://balloonboard.org/) base machine support 
So, again against latest pxa-linux-2.6/devel, with the following
changes:

 * Move to __raw_readl/__raw_writel for FPGA/CPLD register access
 * Change Toppoly LCD config to be selectable at run time rather than
   compile time.
 * Remove currently unused irq device suspend/resume functions.
 * Strip out unnecessary/duplicated #includes.
 * Some code style cleanups.

Balloon3 (http://balloonboard.org/) base machine support

Signed-off-by: Jonathan McDowell <noodles@earth.li>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-09-10 18:49:39 +08:00

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/*
* 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/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/types.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"
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);
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);
}
static void balloon3_backlight_power(int on)
{
pr_debug("%s: power is %s\n", __func__, on ? "on" : "off");
gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
}
static unsigned long balloon3_lcd_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,
GPIO99_GPIO, /* Backlight */
};
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_pxafb_info = {
.modes = balloon3_lcd_modes,
.num_modes = ARRAY_SIZE(balloon3_lcd_modes),
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
.pxafb_backlight_power = balloon3_backlight_power,
};
static unsigned long balloon3_mmc_pin_config[] = {
GPIO32_MMC_CLK,
GPIO92_MMC_DAT_0,
GPIO109_MMC_DAT_1,
GPIO110_MMC_DAT_2,
GPIO111_MMC_DAT_3,
GPIO112_MMC_CMD,
};
static void balloon3_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data *p_d = dev->platform_data;
if ((1 << vdd) & p_d->ocr_mask) {
pr_debug("%s: on\n", __func__);
/* FIXME something to prod here? */
} else {
pr_debug("%s: off\n", __func__);
/* FIXME something to prod here? */
}
}
static struct pxamci_platform_data balloon3_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.setpower = balloon3_mci_setpower,
};
static int balloon3_udc_is_connected(void)
{
pr_debug("%s: udc connected\n", __func__);
return 1;
}
static void balloon3_udc_command(int cmd)
{
switch (cmd) {
case PXA2XX_UDC_CMD_CONNECT:
UP2OCR |= (UP2OCR_DPPUE + UP2OCR_DPPUBE);
pr_debug("%s: connect\n", __func__);
break;
case PXA2XX_UDC_CMD_DISCONNECT:
UP2OCR &= ~UP2OCR_DPPUE;
pr_debug("%s: disconnect\n", __func__);
break;
}
}
static struct pxa2xx_udc_mach_info balloon3_udc_info = {
.udc_is_connected = balloon3_udc_is_connected,
.udc_command = balloon3_udc_command,
};
static struct pxaficp_platform_data balloon3_ficp_platform_data = {
.transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF,
};
static unsigned long balloon3_ohci_pin_config[] = {
GPIO88_USBH1_PWR,
GPIO89_USBH1_PEN,
};
static struct pxaohci_platform_data balloon3_ohci_platform_data = {
.port_mode = PMM_PERPORT_MODE,
.flags = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
};
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,
/* Wakeup GPIO */
GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
/* NAND & IDLE LED GPIOs */
GPIO9_GPIO,
GPIO10_GPIO,
};
static 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_leds_platform_data = {
.leds = balloon3_gpio_leds,
.num_leds = ARRAY_SIZE(balloon3_gpio_leds),
};
static struct platform_device balloon3led_device = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &balloon3_gpio_leds_platform_data,
},
};
static void __init balloon3_init(void)
{
pr_info("Initialising Balloon3\n");
/* system bus arbiter setting
* - Core_Park
* - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
*/
ARB_CNTRL = ARB_CORE_PARK | 0x234;
pxa_set_i2c_info(NULL);
if (balloon3_has(BALLOON3_FEATURE_AUDIO))
pxa_set_ac97_info(NULL);
if (balloon3_has(BALLOON3_FEATURE_TOPPOLY)) {
pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));
gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT,
"LCD Backlight Power");
gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
set_pxa_fb_info(&balloon3_pxafb_info);
}
if (balloon3_has(BALLOON3_FEATURE_MMC)) {
pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
pxa_set_mci_info(&balloon3_mci_platform_data);
}
pxa_set_ficp_info(&balloon3_ficp_platform_data);
if (balloon3_has(BALLOON3_FEATURE_OHCI)) {
pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ohci_pin_config));
pxa_set_ohci_info(&balloon3_ohci_platform_data);
}
pxa_set_udc_info(&balloon3_udc_info);
pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
platform_device_register(&balloon3led_device);
}
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
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