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2a23ec36 JM |
1 | /* |
2 | * linux/arch/arm/mach-pxa/balloon3.c | |
3 | * | |
4 | * Support for Balloonboard.org Balloon3 board. | |
5 | * | |
6 | * Author: Nick Bane, Wookey, Jonathan McDowell | |
7 | * Created: June, 2006 | |
8 | * Copyright: Toby Churchill Ltd | |
9 | * Derived from mainstone.c, by Nico Pitre | |
10 | * | |
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. | |
14 | */ | |
15 | ||
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> | |
22 | #include <linux/fb.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> | |
28 | ||
29 | #include <asm/setup.h> | |
30 | #include <asm/mach-types.h> | |
31 | #include <asm/irq.h> | |
32 | #include <asm/sizes.h> | |
33 | ||
34 | #include <asm/mach/arch.h> | |
35 | #include <asm/mach/map.h> | |
36 | #include <asm/mach/irq.h> | |
37 | #include <asm/mach/flash.h> | |
38 | ||
39 | #include <mach/pxa27x.h> | |
40 | #include <mach/balloon3.h> | |
41 | #include <mach/audio.h> | |
42 | #include <mach/pxafb.h> | |
43 | #include <mach/mmc.h> | |
44 | #include <mach/udc.h> | |
45 | #include <mach/pxa27x-udc.h> | |
46 | #include <mach/irda.h> | |
47 | #include <mach/ohci.h> | |
48 | ||
49 | #include <plat/i2c.h> | |
50 | ||
51 | #include "generic.h" | |
52 | #include "devices.h" | |
53 | ||
54 | static unsigned long balloon3_irq_enabled; | |
55 | ||
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); | |
60 | ||
61 | int balloon3_has(enum balloon3_features feature) | |
62 | { | |
63 | return (balloon3_features_present & (1 << feature)) ? 1 : 0; | |
64 | } | |
65 | EXPORT_SYMBOL_GPL(balloon3_has); | |
66 | ||
67 | int __init parse_balloon3_features(char *arg) | |
68 | { | |
69 | if (!arg) | |
70 | return 0; | |
71 | ||
72 | return strict_strtoul(arg, 0, &balloon3_features_present); | |
73 | } | |
74 | early_param("balloon3_features", parse_balloon3_features); | |
75 | ||
76 | static void balloon3_mask_irq(unsigned int irq) | |
77 | { | |
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); | |
81 | } | |
82 | ||
83 | static void balloon3_unmask_irq(unsigned int irq) | |
84 | { | |
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); | |
88 | } | |
89 | ||
90 | static struct irq_chip balloon3_irq_chip = { | |
91 | .name = "FPGA", | |
92 | .ack = balloon3_mask_irq, | |
93 | .mask = balloon3_mask_irq, | |
94 | .unmask = balloon3_unmask_irq, | |
95 | }; | |
96 | ||
97 | static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc) | |
98 | { | |
99 | unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) & | |
100 | balloon3_irq_enabled; | |
101 | ||
102 | do { | |
103 | /* clear useless edge notification */ | |
104 | if (desc->chip->ack) | |
105 | desc->chip->ack(BALLOON3_AUX_NIRQ); | |
106 | while (pending) { | |
107 | irq = BALLOON3_IRQ(0) + __ffs(pending); | |
108 | generic_handle_irq(irq); | |
109 | pending &= pending - 1; | |
110 | } | |
111 | pending = __raw_readl(BALLOON3_INT_CONTROL_REG) & | |
112 | balloon3_irq_enabled; | |
113 | } while (pending); | |
114 | } | |
115 | ||
116 | static void __init balloon3_init_irq(void) | |
117 | { | |
118 | int irq; | |
119 | ||
120 | pxa27x_init_irq(); | |
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); | |
126 | } | |
127 | ||
128 | set_irq_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler); | |
129 | set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING); | |
130 | ||
131 | pr_debug("%s: chained handler installed - irq %d automatically " | |
132 | "enabled\n", __func__, BALLOON3_AUX_NIRQ); | |
133 | } | |
134 | ||
c11b6a42 EM |
135 | static unsigned long balloon3_ac97_pin_config[] = { |
136 | GPIO28_AC97_BITCLK, | |
137 | GPIO29_AC97_SDATA_IN_0, | |
138 | GPIO30_AC97_SDATA_OUT, | |
139 | GPIO31_AC97_SYNC, | |
140 | GPIO113_AC97_nRESET, | |
141 | }; | |
142 | ||
2a23ec36 JM |
143 | static void balloon3_backlight_power(int on) |
144 | { | |
145 | pr_debug("%s: power is %s\n", __func__, on ? "on" : "off"); | |
146 | gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on); | |
147 | } | |
148 | ||
149 | static unsigned long balloon3_lcd_pin_config[] = { | |
150 | /* LCD - 16bpp Active TFT */ | |
bedbda97 | 151 | GPIOxx_LCD_TFT_16BPP, |
2a23ec36 JM |
152 | |
153 | GPIO99_GPIO, /* Backlight */ | |
154 | }; | |
155 | ||
156 | static struct pxafb_mode_info balloon3_lcd_modes[] = { | |
157 | { | |
158 | .pixclock = 38000, | |
159 | .xres = 480, | |
160 | .yres = 640, | |
161 | .bpp = 16, | |
162 | .hsync_len = 8, | |
163 | .left_margin = 8, | |
164 | .right_margin = 8, | |
165 | .vsync_len = 2, | |
166 | .upper_margin = 4, | |
167 | .lower_margin = 5, | |
168 | .sync = 0, | |
169 | }, | |
170 | }; | |
171 | ||
172 | static struct pxafb_mach_info balloon3_pxafb_info = { | |
173 | .modes = balloon3_lcd_modes, | |
174 | .num_modes = ARRAY_SIZE(balloon3_lcd_modes), | |
175 | .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL, | |
176 | .pxafb_backlight_power = balloon3_backlight_power, | |
177 | }; | |
178 | ||
179 | static unsigned long balloon3_mmc_pin_config[] = { | |
180 | GPIO32_MMC_CLK, | |
181 | GPIO92_MMC_DAT_0, | |
182 | GPIO109_MMC_DAT_1, | |
183 | GPIO110_MMC_DAT_2, | |
184 | GPIO111_MMC_DAT_3, | |
185 | GPIO112_MMC_CMD, | |
186 | }; | |
187 | ||
188 | static void balloon3_mci_setpower(struct device *dev, unsigned int vdd) | |
189 | { | |
190 | struct pxamci_platform_data *p_d = dev->platform_data; | |
191 | ||
192 | if ((1 << vdd) & p_d->ocr_mask) { | |
193 | pr_debug("%s: on\n", __func__); | |
194 | /* FIXME something to prod here? */ | |
195 | } else { | |
196 | pr_debug("%s: off\n", __func__); | |
197 | /* FIXME something to prod here? */ | |
198 | } | |
199 | } | |
200 | ||
201 | static struct pxamci_platform_data balloon3_mci_platform_data = { | |
202 | .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, | |
203 | .setpower = balloon3_mci_setpower, | |
204 | }; | |
205 | ||
206 | static int balloon3_udc_is_connected(void) | |
207 | { | |
208 | pr_debug("%s: udc connected\n", __func__); | |
209 | return 1; | |
210 | } | |
211 | ||
212 | static void balloon3_udc_command(int cmd) | |
213 | { | |
214 | switch (cmd) { | |
215 | case PXA2XX_UDC_CMD_CONNECT: | |
216 | UP2OCR |= (UP2OCR_DPPUE + UP2OCR_DPPUBE); | |
217 | pr_debug("%s: connect\n", __func__); | |
218 | break; | |
219 | case PXA2XX_UDC_CMD_DISCONNECT: | |
220 | UP2OCR &= ~UP2OCR_DPPUE; | |
221 | pr_debug("%s: disconnect\n", __func__); | |
222 | break; | |
223 | } | |
224 | } | |
225 | ||
226 | static struct pxa2xx_udc_mach_info balloon3_udc_info = { | |
227 | .udc_is_connected = balloon3_udc_is_connected, | |
228 | .udc_command = balloon3_udc_command, | |
229 | }; | |
230 | ||
231 | static struct pxaficp_platform_data balloon3_ficp_platform_data = { | |
232 | .transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF, | |
233 | }; | |
234 | ||
235 | static unsigned long balloon3_ohci_pin_config[] = { | |
236 | GPIO88_USBH1_PWR, | |
237 | GPIO89_USBH1_PEN, | |
238 | }; | |
239 | ||
240 | static struct pxaohci_platform_data balloon3_ohci_platform_data = { | |
241 | .port_mode = PMM_PERPORT_MODE, | |
242 | .flags = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW, | |
243 | }; | |
244 | ||
245 | static unsigned long balloon3_pin_config[] __initdata = { | |
246 | /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */ | |
247 | GPIO42_BTUART_RXD, | |
248 | GPIO43_BTUART_TXD, | |
249 | GPIO44_BTUART_CTS, | |
250 | GPIO45_BTUART_RTS, | |
251 | ||
252 | /* Wakeup GPIO */ | |
253 | GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH, | |
254 | ||
255 | /* NAND & IDLE LED GPIOs */ | |
256 | GPIO9_GPIO, | |
257 | GPIO10_GPIO, | |
258 | }; | |
259 | ||
260 | static struct gpio_led balloon3_gpio_leds[] = { | |
261 | { | |
262 | .name = "balloon3:green:idle", | |
263 | .default_trigger = "heartbeat", | |
264 | .gpio = BALLOON3_GPIO_LED_IDLE, | |
265 | .active_low = 1, | |
266 | }, | |
267 | { | |
268 | .name = "balloon3:green:nand", | |
269 | .default_trigger = "nand-disk", | |
270 | .gpio = BALLOON3_GPIO_LED_NAND, | |
271 | .active_low = 1, | |
272 | }, | |
273 | }; | |
274 | ||
275 | static struct gpio_led_platform_data balloon3_gpio_leds_platform_data = { | |
276 | .leds = balloon3_gpio_leds, | |
277 | .num_leds = ARRAY_SIZE(balloon3_gpio_leds), | |
278 | }; | |
279 | ||
280 | static struct platform_device balloon3led_device = { | |
281 | .name = "leds-gpio", | |
282 | .id = -1, | |
283 | .dev = { | |
284 | .platform_data = &balloon3_gpio_leds_platform_data, | |
285 | }, | |
286 | }; | |
287 | ||
288 | static void __init balloon3_init(void) | |
289 | { | |
290 | pr_info("Initialising Balloon3\n"); | |
291 | ||
292 | /* system bus arbiter setting | |
293 | * - Core_Park | |
294 | * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4 | |
295 | */ | |
296 | ARB_CNTRL = ARB_CORE_PARK | 0x234; | |
297 | ||
cc155c6f RK |
298 | pxa_set_ffuart_info(NULL); |
299 | pxa_set_btuart_info(NULL); | |
300 | pxa_set_stuart_info(NULL); | |
301 | ||
2a23ec36 | 302 | pxa_set_i2c_info(NULL); |
c11b6a42 EM |
303 | if (balloon3_has(BALLOON3_FEATURE_AUDIO)) { |
304 | pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ac97_pin_config)); | |
2a23ec36 | 305 | pxa_set_ac97_info(NULL); |
c11b6a42 | 306 | } |
2a23ec36 JM |
307 | |
308 | if (balloon3_has(BALLOON3_FEATURE_TOPPOLY)) { | |
309 | pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config)); | |
310 | gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, | |
311 | "LCD Backlight Power"); | |
312 | gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1); | |
313 | set_pxa_fb_info(&balloon3_pxafb_info); | |
314 | } | |
315 | ||
316 | if (balloon3_has(BALLOON3_FEATURE_MMC)) { | |
317 | pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config)); | |
318 | pxa_set_mci_info(&balloon3_mci_platform_data); | |
319 | } | |
320 | pxa_set_ficp_info(&balloon3_ficp_platform_data); | |
321 | if (balloon3_has(BALLOON3_FEATURE_OHCI)) { | |
322 | pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ohci_pin_config)); | |
323 | pxa_set_ohci_info(&balloon3_ohci_platform_data); | |
324 | } | |
325 | pxa_set_udc_info(&balloon3_udc_info); | |
326 | ||
327 | pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config)); | |
328 | ||
329 | platform_device_register(&balloon3led_device); | |
330 | } | |
331 | ||
332 | static struct map_desc balloon3_io_desc[] __initdata = { | |
333 | { /* CPLD/FPGA */ | |
334 | .virtual = BALLOON3_FPGA_VIRT, | |
335 | .pfn = __phys_to_pfn(BALLOON3_FPGA_PHYS), | |
336 | .length = BALLOON3_FPGA_LENGTH, | |
337 | .type = MT_DEVICE, | |
338 | }, | |
339 | }; | |
340 | ||
341 | static void __init balloon3_map_io(void) | |
342 | { | |
343 | pxa_map_io(); | |
344 | iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc)); | |
345 | } | |
346 | ||
347 | MACHINE_START(BALLOON3, "Balloon3") | |
348 | /* Maintainer: Nick Bane. */ | |
349 | .phys_io = 0x40000000, | |
350 | .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, | |
351 | .map_io = balloon3_map_io, | |
352 | .init_irq = balloon3_init_irq, | |
353 | .timer = &pxa_timer, | |
354 | .init_machine = balloon3_init, | |
355 | .boot_params = PHYS_OFFSET + 0x100, | |
356 | MACHINE_END |