2 * linux/arch/arm/mach-pxa/lubbock.c
4 * Support for the Intel DBPXA250 Development Platform.
6 * Author: Nicolas Pitre
7 * Created: Jun 15, 2001
8 * Copyright: MontaVista Software Inc.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/sysdev.h>
19 #include <linux/major.h>
21 #include <linux/interrupt.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
25 #include <linux/spi/spi.h>
26 #include <linux/spi/ads7846.h>
27 #include <asm/arch/pxa2xx_spi.h>
29 #include <asm/setup.h>
30 #include <asm/memory.h>
31 #include <asm/mach-types.h>
32 #include <asm/hardware.h>
34 #include <asm/sizes.h>
36 #include <asm/mach/arch.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/irq.h>
39 #include <asm/mach/flash.h>
41 #include <asm/hardware/sa1111.h>
43 #include <asm/arch/pxa-regs.h>
44 #include <asm/arch/lubbock.h>
45 #include <asm/arch/udc.h>
46 #include <asm/arch/irda.h>
47 #include <asm/arch/pxafb.h>
48 #include <asm/arch/mmc.h>
53 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
55 void lubbock_set_misc_wr(unsigned int mask
, unsigned int set
)
59 local_irq_save(flags
);
60 LUB_MISC_WR
= (LUB_MISC_WR
& ~mask
) | (set
& mask
);
61 local_irq_restore(flags
);
63 EXPORT_SYMBOL(lubbock_set_misc_wr
);
65 static unsigned long lubbock_irq_enabled
;
67 static void lubbock_mask_irq(unsigned int irq
)
69 int lubbock_irq
= (irq
- LUBBOCK_IRQ(0));
70 LUB_IRQ_MASK_EN
= (lubbock_irq_enabled
&= ~(1 << lubbock_irq
));
73 static void lubbock_unmask_irq(unsigned int irq
)
75 int lubbock_irq
= (irq
- LUBBOCK_IRQ(0));
76 /* the irq can be acknowledged only if deasserted, so it's done here */
77 LUB_IRQ_SET_CLR
&= ~(1 << lubbock_irq
);
78 LUB_IRQ_MASK_EN
= (lubbock_irq_enabled
|= (1 << lubbock_irq
));
81 static struct irqchip lubbock_irq_chip
= {
82 .ack
= lubbock_mask_irq
,
83 .mask
= lubbock_mask_irq
,
84 .unmask
= lubbock_unmask_irq
,
87 static void lubbock_irq_handler(unsigned int irq
, struct irqdesc
*desc
,
90 unsigned long pending
= LUB_IRQ_SET_CLR
& lubbock_irq_enabled
;
92 GEDR(0) = GPIO_bit(0); /* clear our parent irq */
93 if (likely(pending
)) {
94 irq
= LUBBOCK_IRQ(0) + __ffs(pending
);
95 desc
= irq_desc
+ irq
;
96 desc_handle_irq(irq
, desc
, regs
);
98 pending
= LUB_IRQ_SET_CLR
& lubbock_irq_enabled
;
102 static void __init
lubbock_init_irq(void)
108 /* setup extra lubbock irqs */
109 for (irq
= LUBBOCK_IRQ(0); irq
<= LUBBOCK_LAST_IRQ
; irq
++) {
110 set_irq_chip(irq
, &lubbock_irq_chip
);
111 set_irq_handler(irq
, do_level_IRQ
);
112 set_irq_flags(irq
, IRQF_VALID
| IRQF_PROBE
);
115 set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler
);
116 set_irq_type(IRQ_GPIO(0), IRQT_FALLING
);
121 static int lubbock_irq_resume(struct sys_device
*dev
)
123 LUB_IRQ_MASK_EN
= lubbock_irq_enabled
;
127 static struct sysdev_class lubbock_irq_sysclass
= {
128 set_kset_name("cpld_irq"),
129 .resume
= lubbock_irq_resume
,
132 static struct sys_device lubbock_irq_device
= {
133 .cls
= &lubbock_irq_sysclass
,
136 static int __init
lubbock_irq_device_init(void)
138 int ret
= sysdev_class_register(&lubbock_irq_sysclass
);
140 ret
= sysdev_register(&lubbock_irq_device
);
144 device_initcall(lubbock_irq_device_init
);
148 static int lubbock_udc_is_connected(void)
150 return (LUB_MISC_RD
& (1 << 9)) == 0;
153 static struct pxa2xx_udc_mach_info udc_info __initdata
= {
154 .udc_is_connected
= lubbock_udc_is_connected
,
155 // no D+ pullup; lubbock can't connect/disconnect in software
158 static struct platform_device lub_audio_device
= {
159 .name
= "pxa2xx-ac97",
163 static struct resource sa1111_resources
[] = {
167 .flags
= IORESOURCE_MEM
,
170 .start
= LUBBOCK_SA1111_IRQ
,
171 .end
= LUBBOCK_SA1111_IRQ
,
172 .flags
= IORESOURCE_IRQ
,
176 static struct platform_device sa1111_device
= {
179 .num_resources
= ARRAY_SIZE(sa1111_resources
),
180 .resource
= sa1111_resources
,
183 static struct resource smc91x_resources
[] = {
185 .name
= "smc91x-regs",
188 .flags
= IORESOURCE_MEM
,
191 .start
= LUBBOCK_ETH_IRQ
,
192 .end
= LUBBOCK_ETH_IRQ
,
193 .flags
= IORESOURCE_IRQ
,
196 .name
= "smc91x-attrib",
199 .flags
= IORESOURCE_MEM
,
203 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
204 * you can select it to replace the ucb1400 by switching the touchscreen cable
205 * (to J5) and poking board registers (as done below). Else it's only useful
206 * for the temperature sensors.
208 static struct resource pxa_ssp_resources
[] = {
210 .start
= __PREG(SSCR0_P(1)),
211 .end
= __PREG(SSCR0_P(1)) + 0x14,
212 .flags
= IORESOURCE_MEM
,
217 .flags
= IORESOURCE_IRQ
,
221 static struct pxa2xx_spi_master pxa_ssp_master_info
= {
222 .ssp_type
= PXA25x_SSP
,
223 .clock_enable
= CKEN3_SSP
,
227 static struct platform_device pxa_ssp
= {
228 .name
= "pxa2xx-spi",
230 .resource
= pxa_ssp_resources
,
231 .num_resources
= ARRAY_SIZE(pxa_ssp_resources
),
233 .platform_data
= &pxa_ssp_master_info
,
237 static int lubbock_ads7846_pendown_state(void)
239 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
243 static struct ads7846_platform_data ads_info
= {
245 .vref_delay_usecs
= 100, /* internal, no cap */
246 .get_pendown_state
= lubbock_ads7846_pendown_state
,
247 // .x_plate_ohms = 500, /* GUESS! */
248 // .y_plate_ohms = 500, /* GUESS! */
251 static void ads7846_cs(u32 command
)
253 static const unsigned TS_nCS
= 1 << 11;
254 lubbock_set_misc_wr(TS_nCS
, (command
== PXA2XX_CS_ASSERT
) ? 0 : TS_nCS
);
257 static struct pxa2xx_spi_chip ads_hw
= {
260 .cs_control
= ads7846_cs
,
263 static struct spi_board_info spi_board_info
[] __initdata
= { {
264 .modalias
= "ads7846",
265 .platform_data
= &ads_info
,
266 .controller_data
= &ads_hw
,
267 .irq
= LUBBOCK_BB_IRQ
,
268 .max_speed_hz
= 120000 /* max sample rate at 3V */
269 * 26 /* command + data + overhead */,
275 static struct platform_device smc91x_device
= {
278 .num_resources
= ARRAY_SIZE(smc91x_resources
),
279 .resource
= smc91x_resources
,
282 static struct resource flash_resources
[] = {
286 .flags
= IORESOURCE_MEM
,
290 .end
= 0x04000000 + SZ_64M
- 1,
291 .flags
= IORESOURCE_MEM
,
295 static struct mtd_partition lubbock_partitions
[] = {
297 .name
= "Bootloader",
300 .mask_flags
= MTD_WRITEABLE
/* force read-only */
304 .offset
= 0x00040000,
306 .name
= "Filesystem",
307 .size
= MTDPART_SIZ_FULL
,
312 static struct flash_platform_data lubbock_flash_data
[2] = {
314 .map_name
= "cfi_probe",
315 .parts
= lubbock_partitions
,
316 .nr_parts
= ARRAY_SIZE(lubbock_partitions
),
318 .map_name
= "cfi_probe",
324 static struct platform_device lubbock_flash_device
[2] = {
326 .name
= "pxa2xx-flash",
329 .platform_data
= &lubbock_flash_data
[0],
331 .resource
= &flash_resources
[0],
335 .name
= "pxa2xx-flash",
338 .platform_data
= &lubbock_flash_data
[1],
340 .resource
= &flash_resources
[1],
345 static struct platform_device
*devices
[] __initdata
= {
349 &lubbock_flash_device
[0],
350 &lubbock_flash_device
[1],
354 static struct pxafb_mach_info sharp_lm8v31 __initdata
= {
365 .sync
= FB_SYNC_HOR_HIGH_ACT
| FB_SYNC_VERT_HIGH_ACT
,
370 .lccr3
= LCCR3_PCP
| LCCR3_Acb(255),
373 #define MMC_POLL_RATE msecs_to_jiffies(1000)
375 static void lubbock_mmc_poll(unsigned long);
376 static irqreturn_t (*mmc_detect_int
)(int, void *, struct pt_regs
*);
378 static struct timer_list mmc_timer
= {
379 .function
= lubbock_mmc_poll
,
382 static void lubbock_mmc_poll(unsigned long data
)
386 /* clear any previous irq state, then ... */
387 local_irq_save(flags
);
388 LUB_IRQ_SET_CLR
&= ~(1 << 0);
389 local_irq_restore(flags
);
391 /* poll until mmc/sd card is removed */
392 if (LUB_IRQ_SET_CLR
& (1 << 0))
393 mod_timer(&mmc_timer
, jiffies
+ MMC_POLL_RATE
);
395 (void) mmc_detect_int(LUBBOCK_SD_IRQ
, (void *)data
, NULL
);
396 enable_irq(LUBBOCK_SD_IRQ
);
400 static irqreturn_t
lubbock_detect_int(int irq
, void *data
, struct pt_regs
*regs
)
402 /* IRQ is level triggered; disable, and poll for removal */
404 mod_timer(&mmc_timer
, jiffies
+ MMC_POLL_RATE
);
406 return mmc_detect_int(irq
, data
, regs
);
409 static int lubbock_mci_init(struct device
*dev
,
410 irqreturn_t (*detect_int
)(int, void *, struct pt_regs
*),
413 /* setup GPIO for PXA25x MMC controller */
414 pxa_gpio_mode(GPIO6_MMCCLK_MD
);
415 pxa_gpio_mode(GPIO8_MMCCS0_MD
);
417 /* detect card insert/eject */
418 mmc_detect_int
= detect_int
;
419 init_timer(&mmc_timer
);
420 mmc_timer
.data
= (unsigned long) data
;
421 return request_irq(LUBBOCK_SD_IRQ
, lubbock_detect_int
,
422 SA_SAMPLE_RANDOM
, "lubbock-sd-detect", data
);
425 static int lubbock_mci_get_ro(struct device
*dev
)
427 return (LUB_MISC_RD
& (1 << 2)) != 0;
430 static void lubbock_mci_exit(struct device
*dev
, void *data
)
432 free_irq(LUBBOCK_SD_IRQ
, data
);
433 del_timer_sync(&mmc_timer
);
436 static struct pxamci_platform_data lubbock_mci_platform_data
= {
437 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
439 .init
= lubbock_mci_init
,
440 .get_ro
= lubbock_mci_get_ro
,
441 .exit
= lubbock_mci_exit
,
444 static void lubbock_irda_transceiver_mode(struct device
*dev
, int mode
)
448 local_irq_save(flags
);
449 if (mode
& IR_SIRMODE
) {
450 LUB_MISC_WR
&= ~(1 << 4);
451 } else if (mode
& IR_FIRMODE
) {
452 LUB_MISC_WR
|= 1 << 4;
454 local_irq_restore(flags
);
457 static struct pxaficp_platform_data lubbock_ficp_platform_data
= {
458 .transceiver_cap
= IR_SIRMODE
| IR_FIRMODE
,
459 .transceiver_mode
= lubbock_irda_transceiver_mode
,
462 static void __init
lubbock_init(void)
464 int flashboot
= (LUB_CONF_SWITCHES
& 1);
466 pxa_set_udc_info(&udc_info
);
467 set_pxa_fb_info(&sharp_lm8v31
);
468 pxa_set_mci_info(&lubbock_mci_platform_data
);
469 pxa_set_ficp_info(&lubbock_ficp_platform_data
);
471 lubbock_flash_data
[0].width
= lubbock_flash_data
[1].width
=
472 (BOOT_DEF
& 1) ? 2 : 4;
473 /* Compensate for the nROMBT switch which swaps the flash banks */
474 printk(KERN_NOTICE
"Lubbock configured to boot from %s (bank %d)\n",
475 flashboot
?"Flash":"ROM", flashboot
);
477 lubbock_flash_data
[flashboot
^1].name
= "application-flash";
478 lubbock_flash_data
[flashboot
].name
= "boot-rom";
479 (void) platform_add_devices(devices
, ARRAY_SIZE(devices
));
481 spi_register_board_info(spi_board_info
, ARRAY_SIZE(spi_board_info
));
484 static struct map_desc lubbock_io_desc
[] __initdata
= {
486 .virtual = LUBBOCK_FPGA_VIRT
,
487 .pfn
= __phys_to_pfn(LUBBOCK_FPGA_PHYS
),
488 .length
= 0x00100000,
493 static void __init
lubbock_map_io(void)
496 iotable_init(lubbock_io_desc
, ARRAY_SIZE(lubbock_io_desc
));
499 pxa_gpio_mode(GPIO23_SCLK_MD
);
500 pxa_gpio_mode(GPIO25_STXD_MD
);
501 pxa_gpio_mode(GPIO26_SRXD_MD
);
503 /* This enables the BTUART */
504 pxa_gpio_mode(GPIO42_BTRXD_MD
);
505 pxa_gpio_mode(GPIO43_BTTXD_MD
);
506 pxa_gpio_mode(GPIO44_BTCTS_MD
);
507 pxa_gpio_mode(GPIO45_BTRTS_MD
);
509 /* This is for the SMC chip select */
510 pxa_gpio_mode(GPIO79_nCS_3_MD
);
512 /* setup sleep mode values */
522 MACHINE_START(LUBBOCK
, "Intel DBPXA250 Development Platform (aka Lubbock)")
523 /* Maintainer: MontaVista Software Inc. */
524 .phys_io
= 0x40000000,
525 .io_pg_offst
= (io_p2v(0x40000000) >> 18) & 0xfffc,
526 .map_io
= lubbock_map_io
,
527 .init_irq
= lubbock_init_irq
,
529 .init_machine
= lubbock_init
,