2 * linux/arch/arm/mach-pxa/balloon3.c
4 * Support for Balloonboard.org Balloon3 board.
6 * Author: Nick Bane, Wookey, Jonathan McDowell
8 * Copyright: Toby Churchill Ltd
9 * Derived from mainstone.c, by Nico Pitre
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/sysdev.h>
19 #include <linux/interrupt.h>
20 #include <linux/sched.h>
21 #include <linux/bitops.h>
23 #include <linux/gpio.h>
24 #include <linux/ioport.h>
25 #include <linux/mtd/mtd.h>
26 #include <linux/mtd/partitions.h>
27 #include <linux/types.h>
29 #include <asm/setup.h>
30 #include <asm/mach-types.h>
32 #include <asm/sizes.h>
34 #include <asm/mach/arch.h>
35 #include <asm/mach/map.h>
36 #include <asm/mach/irq.h>
37 #include <asm/mach/flash.h>
39 #include <mach/pxa27x.h>
40 #include <mach/balloon3.h>
41 #include <mach/audio.h>
42 #include <mach/pxafb.h>
45 #include <mach/pxa27x-udc.h>
46 #include <mach/irda.h>
47 #include <mach/ohci.h>
54 static unsigned long balloon3_irq_enabled;
56 static unsigned long balloon3_features_present =
57 (1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
58 (1 << BALLOON3_FEATURE_AUDIO) |
59 (1 << BALLOON3_FEATURE_TOPPOLY);
61 int balloon3_has(enum balloon3_features feature)
63 return (balloon3_features_present & (1 << feature)) ? 1 : 0;
65 EXPORT_SYMBOL_GPL(balloon3_has);
67 int __init parse_balloon3_features(char *arg)
72 return strict_strtoul(arg, 0, &balloon3_features_present);
74 early_param("balloon3_features", parse_balloon3_features);
76 static void balloon3_mask_irq(unsigned int irq)
78 int balloon3_irq = (irq - BALLOON3_IRQ(0));
79 balloon3_irq_enabled &= ~(1 << balloon3_irq);
80 __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
83 static void balloon3_unmask_irq(unsigned int irq)
85 int balloon3_irq = (irq - BALLOON3_IRQ(0));
86 balloon3_irq_enabled |= (1 << balloon3_irq);
87 __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
90 static struct irq_chip balloon3_irq_chip = {
92 .ack = balloon3_mask_irq,
93 .mask = balloon3_mask_irq,
94 .unmask = balloon3_unmask_irq,
97 static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
99 unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
100 balloon3_irq_enabled;
103 /* clear useless edge notification */
105 desc->chip->ack(BALLOON3_AUX_NIRQ);
107 irq = BALLOON3_IRQ(0) + __ffs(pending);
108 generic_handle_irq(irq);
109 pending &= pending - 1;
111 pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
112 balloon3_irq_enabled;
116 static void __init balloon3_init_irq(void)
121 /* setup extra Balloon3 irqs */
122 for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
123 set_irq_chip(irq, &balloon3_irq_chip);
124 set_irq_handler(irq, handle_level_irq);
125 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
128 set_irq_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
129 set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
131 pr_debug("%s: chained handler installed - irq %d automatically "
132 "enabled\n", __func__, BALLOON3_AUX_NIRQ);
135 static void balloon3_backlight_power(int on)
137 pr_debug("%s: power is %s\n", __func__, on ? "on" : "off");
138 gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
141 static unsigned long balloon3_lcd_pin_config[] = {
142 /* LCD - 16bpp Active TFT */
164 GPIO99_GPIO, /* Backlight */
167 static struct pxafb_mode_info balloon3_lcd_modes[] = {
183 static struct pxafb_mach_info balloon3_pxafb_info = {
184 .modes = balloon3_lcd_modes,
185 .num_modes = ARRAY_SIZE(balloon3_lcd_modes),
186 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
187 .pxafb_backlight_power = balloon3_backlight_power,
190 static unsigned long balloon3_mmc_pin_config[] = {
199 static void balloon3_mci_setpower(struct device *dev, unsigned int vdd)
201 struct pxamci_platform_data *p_d = dev->platform_data;
203 if ((1 << vdd) & p_d->ocr_mask) {
204 pr_debug("%s: on\n", __func__);
205 /* FIXME something to prod here? */
207 pr_debug("%s: off\n", __func__);
208 /* FIXME something to prod here? */
212 static struct pxamci_platform_data balloon3_mci_platform_data = {
213 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
214 .setpower = balloon3_mci_setpower,
217 static int balloon3_udc_is_connected(void)
219 pr_debug("%s: udc connected\n", __func__);
223 static void balloon3_udc_command(int cmd)
226 case PXA2XX_UDC_CMD_CONNECT:
227 UP2OCR |= (UP2OCR_DPPUE + UP2OCR_DPPUBE);
228 pr_debug("%s: connect\n", __func__);
230 case PXA2XX_UDC_CMD_DISCONNECT:
231 UP2OCR &= ~UP2OCR_DPPUE;
232 pr_debug("%s: disconnect\n", __func__);
237 static struct pxa2xx_udc_mach_info balloon3_udc_info = {
238 .udc_is_connected = balloon3_udc_is_connected,
239 .udc_command = balloon3_udc_command,
242 static struct pxaficp_platform_data balloon3_ficp_platform_data = {
243 .transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF,
246 static unsigned long balloon3_ohci_pin_config[] = {
251 static struct pxaohci_platform_data balloon3_ohci_platform_data = {
252 .port_mode = PMM_PERPORT_MODE,
253 .flags = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
256 static unsigned long balloon3_pin_config[] __initdata = {
257 /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
264 GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
266 /* NAND & IDLE LED GPIOs */
271 static struct gpio_led balloon3_gpio_leds[] = {
273 .name = "balloon3:green:idle",
274 .default_trigger = "heartbeat",
275 .gpio = BALLOON3_GPIO_LED_IDLE,
279 .name = "balloon3:green:nand",
280 .default_trigger = "nand-disk",
281 .gpio = BALLOON3_GPIO_LED_NAND,
286 static struct gpio_led_platform_data balloon3_gpio_leds_platform_data = {
287 .leds = balloon3_gpio_leds,
288 .num_leds = ARRAY_SIZE(balloon3_gpio_leds),
291 static struct platform_device balloon3led_device = {
295 .platform_data = &balloon3_gpio_leds_platform_data,
299 static void __init balloon3_init(void)
301 pr_info("Initialising Balloon3\n");
303 /* system bus arbiter setting
305 * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
307 ARB_CNTRL = ARB_CORE_PARK | 0x234;
309 pxa_set_ffuart_info(NULL);
310 pxa_set_btuart_info(NULL);
311 pxa_set_stuart_info(NULL);
313 pxa_set_i2c_info(NULL);
314 if (balloon3_has(BALLOON3_FEATURE_AUDIO))
315 pxa_set_ac97_info(NULL);
317 if (balloon3_has(BALLOON3_FEATURE_TOPPOLY)) {
318 pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));
319 gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT,
320 "LCD Backlight Power");
321 gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
322 set_pxa_fb_info(&balloon3_pxafb_info);
325 if (balloon3_has(BALLOON3_FEATURE_MMC)) {
326 pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
327 pxa_set_mci_info(&balloon3_mci_platform_data);
329 pxa_set_ficp_info(&balloon3_ficp_platform_data);
330 if (balloon3_has(BALLOON3_FEATURE_OHCI)) {
331 pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ohci_pin_config));
332 pxa_set_ohci_info(&balloon3_ohci_platform_data);
334 pxa_set_udc_info(&balloon3_udc_info);
336 pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
338 platform_device_register(&balloon3led_device);
341 static struct map_desc balloon3_io_desc[] __initdata = {
343 .virtual = BALLOON3_FPGA_VIRT,
344 .pfn = __phys_to_pfn(BALLOON3_FPGA_PHYS),
345 .length = BALLOON3_FPGA_LENGTH,
350 static void __init balloon3_map_io(void)
353 iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
356 MACHINE_START(BALLOON3, "Balloon3")
357 /* Maintainer: Nick Bane. */
358 .phys_io = 0x40000000,
359 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
360 .map_io = balloon3_map_io,
361 .init_irq = balloon3_init_irq,
363 .init_machine = balloon3_init,
364 .boot_params = PHYS_OFFSET + 0x100,