[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>
diff --git a/arch/arm/mach-pxa/balloon3.c b/arch/arm/mach-pxa/balloon3.c
new file mode 100644
index 0000000..f23138b
--- /dev/null
+++ b/arch/arm/mach-pxa/balloon3.c
@@ -0,0 +1,361 @@
+/*
+ * 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